News

1. Clamping pressure: In principle, it should be greater than the total pressure of the injection mold, based on no burr. 2. Pressure and speed have some of the same relationships in the mold. The purpose is to make the raw material fill all corners of the mold evenly, thoroughly and properly. Too low will cause short shot, shrinkage, too high hair, too full, sticky, burning, easy to mold and high internal stress 3. Speed: The speed of the speed determines the condition of the raw material in the mold runner and the finished product, such as burrs, fullness, scorching, slow shooting, short shot, shrinkage holes, poor bonding, and easy breakage. 4. Temperature: different raw materials, different temperatures, too low solution gel color is not uniform, the internal stress of the finished product increases. If the temperature is too low, the pressurization may be too high, causing the screw to break. If the temperature is too high, the product has burrs, and the temperature difference caused by cooling causes shrinkage. Raw materials will break down, turn yellow, change color, and become brittle. The cooling time becomes longer, the gas is not easy to be discharged, and there is gas. 5. Back pressure: The resistance of the screw to retreat when rotating and feeding is called back pressure. Its function is to make the raw material more dense during transport compression. The air and moisture of the raw material can be discharged from the screw. Sols do not contain gaseous components that affect the surface of the finished product. There will be air bubbles in the lower part and the surface will be silver. High will cause overheating, agglomeration, overflow, long cycle, and the screw will not retreat. At the same time, the application of loosening is also important: when the back pressure is low, some raw materials will be loose, while others will not need to be adjusted according to the various materials. When the back pressure is high, be sure to use loose, pay attention to whether the distance does not trap air. 6. The length of mold temperature and cooling time affects the finished mold, shrinkage rate, dimensional tolerance, surface brightness, cycle, etc., and should be adjusted according to the actual situation. In addition, finished products with thickness such as acrylic and PC must have mold temperature to avoid bubbles and stress.

The process of mold design is generally like this: from the user to the plastic product drawing (which may be two-dimensional or three-dimensional), the mold design engineer considers the appropriate structure according to the type, characteristics and shape of the product. That is, the plastic Pieces can be formed by using what kind of mold structure. In this process, the structural design engineer also needs to select the type, size, gate type, quantity, size, location of the runner and determine the number and size of the runner according to some specific requirements of the product. In addition to being structurally sound, the designed mold is also feasible in terms of casting and cooling systems. Obviously, mold design is very demanding on structural design engineers. He not only has experience in structural design, but also has a lot of knowledge in molding materials and molding processes, or the success or failure of the design depends largely on the experience of the mold designer. Even though the design engineer has good experience in mold design, he still faces many new problems, because the actual product is often kaleidoscopic. Sometimes subtle changes or specific product requirements can make an existing experience unavailable, or even if available, it cannot be verified prior to actual testing. This leads to an important design-correction-redesign feature of the mold design process. How to reduce the number of cycles in the process so that the initial design achieves or approximates the combined result is of great significance in practice. CAE analysis is an ideal tool to solve the above problems. The reason is that the tool is based on a relatively accurate mathematical model and thus can approximate the results of actual production practice. In addition, the computational speed allows multiple gating and cooling systems to be executed before the actual test. Evaluate until optimization, thereby shortening design and manufacturing cycles and improving quality. This article presents some of the issues and practices noted in CAE analysis, with examples. (1) Clear analysis requirements and priorities. The purpose of CAE analysis is different for different products. For appearance parts, injection molding defects that affect appearance such as welding marks are not allowed on the surface; for parts that do not appear, the position of sintering marks is not important, but if the product has a strict assembly relationship, the allowable warpage and deformation amount become the main pursuit The goal. In addition, it is generally required that all items meet the requirements of flow balance and uniform filling. In practice, it is difficult to satisfy multiple requirements at the same time. In most cases, it is mainly to satisfy a major requirement. On this premise, other requirements are met. Therefore, on the basis of clear analysis requirements, it is also necessary to distinguish which are the main requirements of this analysis. After determining the requirements and priorities of the analysis, it is necessary to initially determine which parameters are modified or changed. For example, the main factors affecting the position of the weld marks are the position of the gate and the shape characteristics of the product. Generally, it is not allowed to change the shape of the product; the main factor affecting the warpage deformation is the shape of the product. From a process point of view, the injection pressure is too large. , Too long pressure holding time and uneven cooling will lead to excessive warpage. In addition to the characteristics of the product structure itself, the size of the gate and runner can directly affect the injection pressure in the cavity. The size and arrangement of the cooling channels directly affects the uniformity of cooling. These factors indirectly affect the deformation and warpage of the product. (2) Analysis of product structure characteristics. Using professional CAE analysis software for injection flow simulation requires geometric modeling first. Generally, this process takes a long time. For this reason, the geometric model should be appropriately simplified to shorten the modeling time and improve the calculation efficiency. At present, some CAE software has the function of directly importing the solid model from professional CAD software, and then using the specific neutral extraction tool in the software to extract the neutral surface for calculation, but when the product structure is more complex, it will be generated. many problems. Therefore, it is still important to simplify details that do not significantly affect the computational results.

1. Clamping pressure: In principle, it should be greater than the total pressure of the injection mold, based on no burr. 2. Pressure and speed have some of the same relationships in the mold. The purpose is to make the raw material fill all corners of the mold evenly, thoroughly and properly. Too low will cause short shot, shrinkage, too high hair, too full, sticky, burning, easy to mold and high internal stress 3. Speed: The speed of the speed determines the condition of the raw materials in the mold runner and the finished product, such as burrs, fullness, scorching, slow shooting, short shot, shrinkage holes, poor bonding, and easy breakage. 4. Temperature: different raw materials, different temperatures, too low solution gel color is not uniform, the internal stress of the finished product increases. If the temperature is too low, the pressurization may be too high, causing the screw to break. If the temperature is too high, the product has burrs, and the temperature difference caused by cooling causes shrinkage. Raw materials will break down, turn yellow, change color, and become brittle. The cooling time becomes longer, the gas is not easy to be discharged, and there is gas. 5. Back pressure: The resistance of the screw to retreat when rotating and feeding is called back pressure. Its function is to make the raw material more dense during transport compression. The air and moisture of the raw material can be discharged from the screw. Sols do not contain gaseous components that affect the surface of the finished product. There will be air bubbles in the lower part and the surface will be silver. High will cause overheating, agglomeration, overflow, long cycle, and the screw will not retreat. At the same time, the application of loosening is also important: when the back pressure is low, some raw materials will be loose, while others will not need to be adjusted for various materials. When the back pressure is high, be sure to use loose, pay attention to whether the distance does not trap air. 6. The length of mold temperature and cooling time affects the finished mold, shrinkage rate, dimensional tolerance, surface brightness, cycle, etc., and should be adjusted according to the actual situation. In addition, finished products with thickness such as acrylic and PC must have mold temperature to avoid bubbles and stress.

Representative models:ZY-125DM,ZY-250DM Characteristics: Bakelite injection molding machine, is a product made of powdered raw materials through preheating, injection and curing, the product has high density and good precision, and is more suitable for inlay product molding.

Representative models:ZY-250,ZY-350,ZY-600 Characteristics: 1.Eversion double toggles medium injection molding machine is a product promoted by our factory.The mold clamping force of this machine is set at the middle of template.The template is not easy to deform and the fracture of tie bar can be avoided. 2.The mold clamping force is set at the middle.The force of mold is uniform.The life of machine and mold is prolonged and the quality of product is improved too. 3.For product with long length and small area, economic benefit of investment run can be raised. 4.Being used left and right toggle style design and equipped with automatic refueling function as well as recycle lubricating oil,not only it is economy but also it is convenient.

Representative models:CY-550C-V Machine Features: 1.Inherited upright injection structure, convenient for inlay injection molding. 2.Column-free C-architecture body, no obstruction to long lines and towed products to cover. 3.It is possible to share the mold of four-post model, and the column-free structure is convenient for automatic implantation. 4.Multi-stage PID temperature control of material tube, infinitely adjustable speed of feeding, stable molding. 5.Screen type industrial control computer, simple operation, precise control low failure.

Representative models:CY-150C-V,CY-350C-V Machine Features: 1.Upright opening and closing mold with inline screw injection for easy inlay injection molding. 2.Column-free C-architecture body, no obstruction to long lines and towed products to cover. 3.Micro precision injection screw with closed loop control of injec tion, suitable for micro precision molding. 4.Multi-stage PID temperature control of material tube, infinitely adjustable speed of feeding, stable molding. 5.Screen-type industrial control computer, simple operation, pre cise control low failure.

Representative models:CY-500C-E Machine Features: 1.Upright mold opening and closing, horizontal injection, easy inlay injection molding. 2.Column-free C-architecture body, no obstruction to long lines and towed products to cover. 3.Horizontal can be back and forth seat into, up and down lift seat table, using a wide range of molds. 4.Multi-stage PID temperature control of material tube, infinitely adjustable speed of feeding, stable molding. 5.Screen type industrial control computer, simple operation, precise control low failure.

Representative models:CY-500CDM,CY-850CDM Machine Features: 1.Pillar free C-frame fuselage,barrier free for long line and towing products. 2.Type can seat in front and back,up and down lifting seat table,widely used mold. 3.Double slide plates and two lower dies slide out from left and right,taking products and placing inserts do not occupy molding time. 4.Multi section PID temperature control of material pipe,stepless speed regulation of feeding,stable forming. 5.Screen industrial control computer,simple operation,precise control and low failure.

Representative models:CY-500C-PP,CY-850C-PP Machine Features: 1. Verical opening and closing mold, horizontal injection, easy to inlay injection molding. 2.Pillar free C-frame fuselage, barrier free for long line and towing products. 3. The horizontal type can seat in front and back, up and down the lifting table, and the use of molds is extensive. 4. Multi section PID temperature control of material pipe, stepless speed regulation of feeding, stable forming. 5. Screen industrial control computer, simple operation, precise control and low failure.

Representative models:CY-1000SWT-DM Machine Features: 1. Verical opening and closing mpold and inline screw ijcion for esysina and injection molding. 2. Horizontal type with front and rear seating, up and down lifting of the seating table, using a wide range of moulds. 3. Double sliding plate with two lower moulds sliding out left and right, taking the product and arranging the inserts without taking up the forming time. 4. Multi-stage PID temperature control of the material tube, infinitely adjustable speed of material addition, stable forming. 5. Screen type industrial control computer, simple operation, precise control and low fault.

Representative models:CY-1000SWT-PP,CY-2000SWT-PP Machine Features: 1.Upright mold opening and closing, horizontal injection, easy inlay injection molding. 2.Horizontal can be back and forth seat into, up and down lift seat table, using a wide range of molds. 3.The horizontal injection unit reduces the height of the machine, and the large tonnage machine is not limited by the height of the plant. 4.Multi-stage PID temperature control of material tube, infinitely adjustable speed of feeding, stable molding. 5.Screen type industrial control computer, simple operation, precise control low failure.

Representative models:CY-850STHS Machine Features: 1.Vertical opening and closing mold and in-line screw injection, convenient for inlay injection moldinging. 2.Set up vertical horizontal advantages in one, canachievea single mold two molding material ejection; the same mold can be injected into two colors at the same time, produce two kinds of color products. 3.The double injection unit is controlled independently, which can realize single injection or double at the same time, and has a wide range of functions. 4.Multi section PID temperature control of material pipe, stepless speed regulation of feeding, stable forming. 5.Screen industrial control computer, simple operation, precise control and low failure.

Representative models:CY-450STDM-SS,CY-1500STDM-SS Machine Features: 1.Upright opening and closing mold with inline screw injection for easy inlay injection molding. 2.Multi-stage PID temperature control of material tube, infinitely adjustable speed of feeding, stable molding. 3.Screen-type industrial control computer, simple operation, precise control low failure. 4.Two-station sliding plate structure, can be used as two machines for independent operation. 5.Double-seat table injection structure, one lower die and two upper dies, sliding left and right in the same plane, can realize two materials or colors in sequence injection molding, greatly improving work efficiency.

Representative models:CY-350ST-R,CY-450ST-R,CY-550ST-R,CY-850ST-R,CY-1000ST-R Machine Features: 1.The disc rotates back and forth alternately at 180 degrees on the same horizontal plane, allowing the operator to do the picking and placing of inserts on a fixed operating surface, making the work easy and efficient. 2.The positioning of the discs, with fixed clamping, can ensure high precision positioning after the discs rotate and stop, so that the upper and lower molds can be molded more accurately. 3.Automatic devices such as automatic embedding and removal can be added to achieve full automatic operation of the machine. 4.The standard disc is 2 stations, with special needs, 3 or 4 stations can be selected to achieve more convenient operation, and with automation for the ear line rule to increase production capacity. 5.The standard disc is a vertical three-column direct compression clamping die, with special mold requirements, it can also be a vertical four-column direct compression clamping die.

Representative models:CY-350STDM-PP,CY-450STDM-PP,CY-550STDM-PP,CY-850STDM-PP,CY-1000STDM-PP Machine Features: 1.Upright opening and closing mold with inline screw injection for easy inlay injection molding; 2.Multi-stage PID temperature control of material tube, infinitely adjustable speed of feeding, stable molding; 3.Screen-type industrial control computer, simple operation, pre cise control low failure; 4.Double sliding plates with two lower dies slide out the operation left and right, taking products and setting inserts do not take up molding time; 5.Large operating space for left and right workstations, safer operation and easy to implant automated production in left and right workstations.

Representative models:CY-350STD-PP,CY-450STD-PP,CY-550STD-PP,CY-850STD-PP,CY-1000STD-PP Machine Features: 1.Vertical opening and closing mold and in-line screw injection for easyinlay and injection molding. 2.Multi section PID temperature control of material pipe, stepless speed regulation of feeding, stable forming. 3.Screen industrial control computer, simple operation, precise control and low failure. 4. Four column type with pedestal lifting, more stable large mold, more stable product quality. 5. The single slide plate can slide out of the mold for operation, and it is safer and more convenient to swing the parts to take the products.

Representative models:CY-450ST-G,CY-550ST-G,CY-850ST-G Machine Features: 1.Upright opening and closing mold with inline screw injection for easy inlay injection molding. 2.Multi-stage PID temperature control of material tube, infinitely adjustable speed of feeding, stable molding. 3.High speed injection structure, injection speed over 300mm/s, suitable for thin wall parts injection. 4.Optional full closed-loop injection system is available, with fast system response, suitable for precision molding. 5.Robots and automatic feeding devices can be added to realize unmanned automatic operation.

Representative models:CY-350ST-PP,CY-450ST-PP,CY-550ST-PP,CY-850ST-PP,CY-1000ST-PP Machine Features: 1. Verical opening and closing mpold and inline screw ijcion for esysina and injection molding. 2. Multi section PID temperature control of material pipe, stepless speed regulation of feeding, stable forming. 3. Screen industrial control computer, simple operation, precise control and low failure. 4. Four column type with pedestal lifting, more stable large mold, more stable product quality. 5. It can be equipped with manipulator and automatic feeding device to realize unmanned automatic production. It is easy to fix die.

Representative models:CY-160-4ST-PP,CY-300-4ST-PP Machine Features: 1.In-line screw type injection device. 2. Two (three) stage temperature control, injection speed, back pressure, screw speed without stage adjustment suitable for various precision plastic parts forming. 3. With seat lift, convenient for mould installation and cleaning of material head 4. Four-column structure, more stable for large moulds and more stable product quality 5. Small and exquisite, small footprint, suitable for most plant heights