I. Product Advantages:

 

Strong manufacturing system:
YT-E Series (Next-Generation Servo Energy-Saving Injection Molding Machine)
The servo-energy-saving injection molding machine series is an economical, energy-efficient, highly responsive, and low-noise product developed by Lishibang Company.
YT-U Series (Dual-Hydraulic Circuit Composite Action Injection Molding Machine)
In a dual-hydraulic circuit composite-action injection molding machine, mold opening and pre-plasticization are performed simultaneously; during injection, the two hydraulic circuits merge to increase speed.
YT-PET Series (Molded Bottle Preforms Dedicated Machine)
Based on the characteristics of preform products, multiple structural and configuration improvements have been optimized, resulting in higher production efficiency and greater process stability.
YT-H Series (High-Speed Precision Injection Molding Machine)

This model features an imported high-performance accumulator, and the injection molding process employs a differential motion method, making it ideal for forming ultra-thin plastic parts with high precision requirements.

 

Our strengths:

It is the perfect injection molding machine for most technical components, as well as for both thin-wall and thick-wall injection molding and numerous standard applications. Its extensive range of standard features and numerous options ensure that it can meet your diverse needs. Moreover, our experienced LiShiBang technicians are dedicated every day to fulfilling customers’ specific requirements. High-quality LiShiBang injection molding machines boast exceptionally low maintenance rates and can significantly enhance users’ production efficiency.

• Ultra-high precision, ultra-long lifespan: The optimally designed toggle-type high-speed clamping mechanism features low-pressure stress at the joints, ensuring ultra-high precision and exceptionally long machine life.
• Ultra-wide template design, wider mold capacity range: The large-capacity, wide-template design maximizes the range of mold options available to customers.
• Neutron/Threaded Control: Flexible neutron programming control, powered by an independent hydraulic pump station.
• High-precision temperature control: Automatic adaptation for stable and precise control of barrel temperature
• High-quality centralized lubrication system: High-performance centralized lubrication with low-viscosity oil dramatically reduces wear and tear during operation, ensuring long-term maintenance of the mold’s positioning accuracy.
• Cleaner work environment: The mobile waste oil cleaning tray makes it extremely easy to clean waste oil in the mold-closing area.
• Convenient product delivery: Multi-directional removal of plastic products, effectively utilizing equipment space and suitable for installation on various types of conveying equipment.
• High-end controller: Equipped with a high-performance, computer-controlled dedicated controller, featuring a large-view window and a color display, with comprehensive functionality.

 

Mold-locking section:

In the clamping unit, Lishibang has uniquely developed a box-type, high-rigidity template structure. The clamping support guide rails feature a high-rigidity design that effectively minimizes deformation. The hinge mechanism, optimized through computer-aided design, delivers ultra-stable and rapid clamping performance. Additionally, the unit boasts an increased mold capacity, a gear-adjustable mold adjustment system, a built-in mechanical safety lock, and a 180-degree rotating product discharge hopper—enabling you to meet your personalized needs and making your operation even simpler!

• 1. A uniquely designed box-type high-rigidity template featuring minimal template deformation and long-lasting tie rods, ensuring excellent mold-closing performance.
• 2. Equipped with a built-in stepped mechanical safety lock that is unaffected by modulus of elasticity deformation. The mechanical locking rod has been changed from traditional compression to tension, making it convenient and easy to use.
• 3. Gear-based mold adjustment device, offering precise mold adjustment and excellent synchronization.
• 4. The mold-clamping support guide rails adopt an I-beam steel structure, offering high rigidity and reducing frame deformation.
• The mechanically hinged structure designed for computer program optimization, combined with the controller’s four-stage adjustment of mold closing pressure and flow rate, achieves an exceptionally stable and rapid mold-closing effect.
• The rotary product discharge hopper can be customized to suit the specific characteristics of the plant and allows products to be removed from multiple directions.
• Differential locking mechanism, effectively enhancing mold-moving speed and production efficiency.
• Adjustable thimble device.
   

Injection unit:

• Dual-cylinder injection: Effectively avoids the drawbacks of traditional injection processes, such as asynchronous movements and high inertia, resulting in smoother injection movements and a 98.75% improvement in injection accuracy.
• Folding-type injection and holding cylinders: More compact than traditional dual-cylinder designs, with rational energy distribution.
• Boat-shaped bridge-type guide rails: The slide mechanism adopts a boat-shaped bridge-type guide rail design, offering low noise and smooth operation; ideal for high-speed applications; capable of maintaining precision over extended periods, with high positioning accuracy and excellent reliability.
• Oil seal: Employs non-rotating sealing technology to prevent oil leakage.
• Sprue Center Adjustment Device: Makes adjusting the sprue center more convenient and accurate.
• The injection molding action is rigidly connected to the control valve, effectively reducing fluid fluctuations and improving injection accuracy.

The injection unit of the Yingtai injection molding machine fully embodies our commitment to innovation and the pursuit of perfection. Its four outstanding features—“smooth operation,” “energy efficiency,” “speed,” and “precision”—guarantee you the best possible injection and plasticizing performance.

 

Hydraulic unit:

The oil circuit design features a large-diameter, resistance-free configuration, which minimizes oil circuit losses and noise. It employs a high-end servo control system, delivering remarkable energy-saving performance—up to 20-80%. This system enables zero backpressure melt delivery, and its plasticizing capacity and plasticizing efficiency are 60% higher than those of conventional machines. Additionally, it incorporates a high-density filtration device that effectively controls oil contamination to NASB-9 level.

• Advanced configuration servo system, energy savings up to 20-80%.
• Adopting a high-pressure filter screen to effectively control oil contamination at NASB8-9 level.
• 60μm filter mesh, ultra-strong dirt-holding capacity, easy to replace.
• Zero-backpressure melt-glue device—plasticizing efficiency and plasticizing capacity are 60% higher than those of conventional machines.
• Based on fluid simulation analysis, the oil circuit design has been optimized to achieve a large-diameter, drag-free state. Pipeline losses are more than 10% lower than in conventional designs, and the overall machine noise is reduced by more than 6 decibels.
• The new mailbox design facilitates air release, ensures smooth operation of the same-server system, and makes cleaning easier.

 

Electronic Control Unit

The injection molding machine’s entire control system boasts powerful functionality and stable performance, featuring high-speed responsiveness. The controller is a new-generation model jointly developed by our company’s specialized technicians and a renowned computer supplier for injection molding machines. It incorporates high-speed, stable DSP technology and is equipped with 16-bit high-speed analog input channels, enabling more precise data detection and control. The display screen uses a high-resolution LCD, offering advantages that are unmatched by conventional computer displays.

• High-resolution color TFT LCD screen
• Built-in multi-language options
• Windows-style user interface with oscilloscope functionality, capable of displaying injection speed and holding-pressure curves.
• 16-bit high-speed AD converter enables more accurate electronic scale position measurement.
• Built-in Intel 400MHz high-speed CPU control system for fast response.
• 64M RAM system memory, with multiple sets of mold data saved.
• Equipped with an MMC/SD card interface for convenient data copying and storage.
• Production data recording and monitoring function, facilitating process adjustments.
• Equipped with a robotic arm electrical interface, suitable for use with robotic arms specifically designed for injection molding machines both domestically and internationally.

 

Servo energy-saving unit

 

 

1. Servo drive 2. Dedicated servo motor 3. Dedicated servo pump

 

High-end configuration, ultra-energy-saving performance, and superior quality! The servo-energy-saving injection molding machine adjusts its output power according to the load, eliminating any wasteful consumption of excess energy. When the cooling system is not in use, the motor consumes zero power. Compared to conventional injection molding machines, servo-energy-saving injection molding machines can save between 20% and 80%, offering you genuine energy savings and significant economic benefits.

II. Characteristics

 

Excellent forming stability: The servo drive system employs closed-loop control for both pressure and flow. Compared to conventional injection molding machines, this results in significantly improved molding repeatability.
Oil temperature is constant: The servo motor proportionally outputs hydraulic oil, preventing the generation of excess heat. The hydraulic oil doesn't even require cooling, significantly saving water.

Fast response: The servo drive responds rapidly, with a startup time that is 50% faster than that of conventional injection systems.
Significant energy savings: Under the same conditions, compared to traditional quantitative pump injection molding machines, energy savings range from 20% to 80%.
Ultra-performance eco-friendly: The entire machine operates with low noise, and runs even more quietly at low speeds.

 

 

Integrated Machine Technical Parameters

Project	Unit	YT-140JS			YT-168JS			YT-220JS			YT-260JS			YT-320JS			YT-400JS
Injection system		A	B	C	A	B	C	A	B	C	A	B	C	A	B	C	A	B	C
Screw diameter	mm	35	40	45	40	45	50	45	50	60	50	55	60	60	67	75	67	75	83
Theoretical Injection Volume	cubic centimeter	177	232	294	270	342	422	3889	481	692	589	713	848	989	1270	1587	1453	1815	2217
Injection volume (PS)	g	162	213	270	248	314	388	358	442	636	541	655	780	910	1169	1460	1337	1670	2040
	ounce	5.7	7.5	9.5	8.8	11.1	13.7	12.6	15.6	22.5	19.1	23.1	27.5	32.2	41.3	51.6	47.2	59	72.1
Injection pressure	Mpa	228	174	138	234	185	150	219	176	122	236	195	164	226.2	176.1	141	224.8	179.9	147.3
Screw length-to-diameter ratio	L/D	23	20	18	23	20	18	23	20	18	22	20	18.3	22.6	20	20	22.3	20	20
Screw stroke	mm	185			215			245			300			350			400
Screw speed	RPM	0~200			0~222			0~182			0~200			0~150			0~156
Mold-locking system
Clamping force	KN	1400			1680			2200			2600			3200			4000
Mold travel distance	mm	420			450			480			550			580			720
Rod spacing	mm	415x415			465x465			530x530			580x580			660x660			730x730
Modulus of elasticity	mm	145~450			160~500			185~550			195–600			220~655			280~750
Maximum mold opening distance	mm	870			950			1030			1150			1235			1470
Template size	mm	615x615			670x670			785x785			870x870			950x950			1080x1080
Ejection force	KN	49.4			49.4			49.4			77			77			111
Top the itinerary	mm	120			140			140			180			180			205
Number of ejector pins	unit	4+1			4+1			4+1			8+1			8+1			12+1
Other
System pressure	Mpa	17.5			17.5			17.5			17.5			17.5			17.5
Main motor power	kilowatt(s)	15.3			19			26.2			33.6			38.1			47.6
Electrical heating power	kilowatt	8.9			12			12.2			14			18/20			22/24
Heating zone	unit	5			5			5			6			6			6
No-load time	s	3.5			4.5			6			8			11			14
Fuel tank capacity	L	200			250			320			410			510			550
External dimensions	m	4.3x1.2x1.7			4.85x1.3x1.9			5.3x1.4x2.0			6.1x1.3x2.0			6.1x1.4x2.1			7.4x1.65x2.1
Machine weight	t	4			4.85			6.1			10.6			13			17

 

Template size

 

Integrated Machine Technical Parameters

Project	Unit	YT-480JS			YT-560JS			YT-650JS			YT-780JS			YT-1000JS
Injection system		A	B	C
Screw diameter	mm	75	83	90	75	83	90	83	90	98	90	98	110	98	110	120
Theoretical Injection Volume	cubic centimeter	1928	2335	2825	1928	2355	2825	2261	2862	3533	3181	3927	4329	4123	4546	5453
Injection volume (PS)	g	1774	2167	2599	1774	2167	2599	2125	2690	3321	2987	3687	4065	3871	4263	5120
	ounce	62.7	763.6	91.8	62.7	76.6	91.8	75.1	95.1	117.3	105.5	130.3	143.6	136.8	150.6	180.9
Injection pressure	Mpa	198.6	162.5	135.5	198.6	162.5	135.5	197	156	126	180	146	132	177	160	133
Screw length-to-diameter ratio	L/D	22.1	20	20	22.1	20	20	23.5	21	19	24	22	22	23	22	20
Screw stroke	mm	425			425			450			500			525
Screw speed	RPM	0~155			0~155			0~160			0~120			0~110
Mold-locking system
Clamping force	KN	4800			5600			6500			7800			10000
Mold travel distance	mm	755			850			880			1025			1150
Rod spacing	mm	810x810			855x855			900x900			1000x1000			1100x1100
Modulus of elasticity	mm	265~800			300~850			300~870			380~975			4500~1100
Maximum mold opening distance	mm	1555			1700			1750			2000			2250
Template size	mm	1165x1165			1210x1180			1340x1310			1430x81430			1680x1680
Ejection force	KN	111			137			137			275			275
Top the itinerary	mm	250			280			280			300			350
Number of ejector pins	unit	12+1			12+1			12+1			13 plus 4			13 plus 4
Other
System pressure	Mpa	17.5			17.5			17.5			17.5			17.5
Main motor power	kilowatt(s)	30 + 22.4			30 + 22.4			30+30			30+30			34 plus 34
Electrical heating power	kilowatt	28/31			28/31			31			37.8			45.1
Heating zone	unit	6			6			6			7			7
No-load time	s	17			19			21			25			30
Fuel tank capacity	L	750			770			1000			1000			1200
External dimensions	m	8.1x1.9x2.2			8.4x1.9x2.2			8.4x1.9x2.3			10.5x2.4x2.5			11.4x2.7x2.5
Machine weight	t	20			25			30			45			55

 

Template size

 

3. Servo-energy-saving injection molding machine

 

YT-SP Special Machine for Food Packaging Series

The SP-series machine specifically designed for fast-food containers features enhanced clamping rigidity and adopts a brand-new, low-temperature, low-pressure, high-response, rapid design approach. It boasts high production efficiency, stable product quality, and excellent finished-product yield. Products manufactured by this machine exhibit superior toughness, are resistant to brittleness and deformation, have minimal internal stress, and can be produced with thinner wall thicknesses. This machine effectively addresses the common challenges faced in the rapid production of fast-food containers (or thin-walled products)—such as high pressure, high temperatures, slow production cycles, and poor mechanical design. With its entirely new concept, this energy-efficient, high-precision injection-molding equipment sets a leading position in the domestic industry!

YT-ZD Nylon Tie Series Dedicated Machine

The ZD series nylon cable ties专用 machine features a reinforced clamping structure and a specially designed injection molding system, enabling it to meet customers’ requirements for both production volume and stability. Tailored to the specific molding characteristics of these products, the machine enhances the rigidity of its clamping system to accommodate high production speeds and heavy clamping loads. It satisfies the market demand for high energy efficiency and high product density, aligning with the current development trend of domestic injection molding machines.

 

YT-MB Socket Panel Dedicated Machine

The dedicated machine for MB-series socket panel molds, featuring an optimized screw design, effectively prevents yellowing and blackening of the molded parts, significantly enhancing the brightness and smoothness of the panel surface while shortening the molding cycle. Equipped with an optimized clamping structure and a specially designed injection system, this machine can meet customers’ requirements for both product output and stability. The optimized hydraulic circuit design improves injection accuracy and enhances system stability.

 

Introduction to the Mold Locking System

 

1. Built-in mechanical safety lock—no adjustment required. Dual mechanical and electrical safety protection for enhanced safety and reliability.

2. The widened hinge structure offers excellent resistance and ensures reliable precision even during long-term, high-speed molding operations.
3. Lubricate the pressure relay to ensure the proper operation of the entire lubrication pipeline.

4. Utilizing high-quality, high-rigidity ductile iron and advanced computer-aided design, along with high-strength box-type molds subjected to finite element analysis, ensures uniform stress distribution in the mold, eliminates flash during injection molding, and extends the mold’s service life.
5. Sufficient mold installation space and mold opening stroke to broaden the range of mold applications.
6. Standard T-slot for convenient mold installation and removal.

 

 

 

1. The hinge parameters, optimized through computer-aided design, enable template motion characteristics that are both fast and smooth.

2. Intermittent quantitative grease lubrication, with precise metering unaffected by oil pump pressure or piping distance.

3. Configure a low-voltage mold protection control unit to ensure effective mold protection.

4. Precision gear-adjusting mold structure ensures that the parallelism of the template remains unchanged even after modifying the mold thickness, and the mold adjustment process is smooth and effortless.

5. Increase the ejection force and design the ejection stroke to ensure reliable, fast, and smooth ejection of multi-cavity molded parts.

 

Introduction to the Injection System

 

 

1. Fast response, high positioning accuracy, and high repeatability ensure stable product quality.
2. A dual-action injection cylinder is employed, with the nozzle aligned on the same axis as the cylinder. This ensures balanced force during injection, guaranteeing precise control and high injection speed while also preventing material leakage from the nozzle even under high-speed, high-pressure injection conditions.

 

1. The symmetrical oil circuit layout and the placement of control valves at the end of the injection cylinder ensure synchronous operation of the two cylinders during injection, resulting in faster, smoother, and more precise injection responses.
2. High-precision linear guide rails serve as guiding supports for the injection molding mechanism, featuring a low coefficient of friction, minimal and uniform resistance during the injection and plasticization processes, rapid response, and sensitive adjustment—making them ideal for precision injection molding.

3. The glue melting process uses a high-quality, low-speed, high-torque hydraulic motor, ensuring uniform and precise plasticization.

 

 

Introduction to Servo Drive Systems

A fully integrated, closed-loop control module for mechanical, electrical, and hydraulic systems, coupled with a user-friendly, intelligent operating system, enables more precise product dimensions and greater stability in product quality. Pressure closed-loop control: The system’s pressure output features automatic compensation for both low and high oil temperatures, ensuring that the pressure remains unaffected by temperature fluctuations, thus making pressure control more accurate, reliable, and stable.
Speed closed-loop control: The system achieves closed-loop flow compensation control by utilizing a high-precision speed feedback element built into the servo motor.
Stability: Equipped with an imported low-leakage gear pump, ensuring smooth operation at low speeds without creep and stable pressure without fluctuations.
Energy-saving and power-efficient, with low noise levels. The servo motor outputs a specific speed only when there is actual flow demand; under standby conditions or when no load is present, the flow rate is extremely low, causing the motor to virtually stop rotating, resulting in zero power loss and no wasteful energy consumption. There’s no reactive power output, leading to significant power savings, preventing oil temperatures from rising, and reducing both the size of the cooler and the amount of cooling water required. Compared to conventional fixed-displacement and variable-displacement pump systems, the servo-driven oil pump system combines the servo motor’s rapid, stepless speed regulation capability with the hydraulic pump’s ability to autonomously follow pressure changes, offering tremendous energy-saving potential—energy savings can reach as high as 50%.

 

Introduction to Hydraulic Systems

The industry’s first oil-line cleaning system, featuring a built-in oil-temperature filter element with flow-rate detection, ensures a clean fuel tank, increases the service life of hydraulic components by 4 to 10 times, and extends the service life of hydraulic oil.

The servo system saves 30%-50% of power consumption.

 

Introduction to the Control System

Fast response, precise control, simple operation—this program can meet a variety of process requirements and boasts powerful functionality.

 

1. Computer control system with fast and stable operation.
2.10.4"256-color TFT LCD true-color display, with independent CPU control for faster and more stable performance."
3. The control unit features an industrial-grade 32-bit RISC CPU with a host scanning time of less than 1 ms, offering fast response speed and high control accuracy.
4. 2,400 sets of mold parameters can be stored, and the USB interface allows for unlimited expansion of storage capacity.
5.7+1 set of PID-controlled independent CPU temperature control, with automatic adjustment function for PID parameters controlling barrel temperature (expandable to 6–12 sets of hot runner interfaces).

6. Quality monitoring and management, including display of key process parameter curves and statistical tabulation.

7. Input/Output Point Expansion Function (expandable up to 64 input points / 64 output points)

8. Integrates a large number of commonly used software programs, capable of meeting various different mold forming processes.

 

IV. Standard and Optional Features

Mold-locking section

1. Five-point oblique-row double-crank linkage clamping mechanism
2. Electronic scale control for mold opening and closing
3. Mechanical safety mechanism
4. Multi-stage mold opening and closing pressure, speed, and position control

Injection part

1. Dual-cylinder balanced injection system
2. Anti-fatigue, corrosion-resistant screw barrel

3. Multi-stage control of injection, holding pressure, and material storage speeds, pressures, and durations.

4. Position- or time-based injection with pressure-holding control

5. Residue Detection at Injection Molding Locations
6. Electronic scale control for injection position

7. Prevent the screw cold shoulder movement function

8. Pre-plasticizing with a low-speed, high-torque hydraulic motor

9. Closed-loop control of barrel temperature

10. Hopper

Hydraulic section

1. Self-sealing magnetic oil suction filtration system
2. Oil temperature detection and alarm function

Electrical Part

1. Large-screen color LCD display
2. 100 sets of computer memory mold with memory function

3. Temperature deviation display and thermocouple open-circuit alarm function

4. Real-time monitoring of the operational status of each motion.

5. System hardware I/O detection function
6. Reserved printer and floppy drive interfaces

7. Motor safety protection function
8. Emergency stop protection device

9. Multi-stage ejection mode
10. Automatic mold adjustment function

11. Low-pressure mold protection function

12. T-slot

13. Automatic centralized lubrication system
14. Mold cooling water distributor

Optional equipment:

1. The close-mold single-shot and the laser irradiation unit can be interchanged.

2. DFEE Electronic Closed-Loop Pump Control System
3. Special screw for specialized raw materials

4. Synchronized ejection device
5. Spring nozzle, extended nozzle, wave-pressure nozzle

6. Screw-type speed measuring device
7. Multi-circuit hydraulic system
8. Accumulator-assisted rapid injection device
9. Core-pulling device
10. Blowing device
11. Template insulation board
12. Transparent Tube Cooling Flow Meter
13. Automatic safety door control device
14. Material feeding port cooling temperature control system
15. Oil temperature preheating function
16. Oil Temperature Constant-Temperature Control System
17. Hopper magnetic holder
18. Mold photoelectric detection
19. Proportional Back-Store Device
20. Internet-based remote monitoring system
21. Pressure Relief Safety Lock
22. SPC Electronic Subdivision Device

Auxiliary machine:

1. Various types of molds

2. Gas-assisted injection device

3. Robotic arm and conveyor belt
4. Dehumidifying dryer

5. Mode Mixing Controller

6. Dry hopper and vacuum conveying

7. Cooling tower

8. Crusher

9. Mixing machine

Random attachment
1. Adjustable shock-absorbing foot pads

2. Common Tools
3. Machine manual
4. Toolbox