Anti-deformation thin-wall core mold ejection mechanism

Abstract

The utility model relates to a mould ejection technical field especially relates to a kind of anti-deformation thin-wall core mould ejection mechanism.A kind of anti-deformation thin-wall core mould ejection mechanism, including injection molding machine, female die, sliding plate, male die, push plate and ejector rod etc., female die is fixedly connected on the left side surface of injection molding machine left part, sliding plate is slidably connected between the right side surface and left side surface of injection molding machine right part, the left side surface of sliding plate is fixedly connected with the male die corresponding with female die, the mould periphery of two male dies is slidably connected with push plate, push plate central point position is fixedly connected with the ejector rod extending to two sides. The utility model is driven by setting electric cylinder driving baffle bar on ejector rod, and baffle bar and male die middle part shape are adapted in ejection process, synchronous support effect is formed at the both ends of mould piece, effectively disperses stress, avoids local stress concentration, to prevent thin-wall part from deforming or damaging, the effect of improving product yield is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mold ejection technology, and in particular to an ejection mechanism for a thin-walled core mold that is resistant to deformation. Background Technology

[0002] In injection molding, especially in the manufacturing of thin-walled cores, the structural characteristics of these cores make them prone to deformation or damage during demolding. This has become one of the key challenges affecting product quality and production efficiency. Traditional mold ejection mechanisms typically rely on simple mechanical ejector pins. While this design can accomplish basic ejection tasks, it cannot provide sufficient support for thin-walled cores, leading to low yield rates and frequent appearance defects.

[0003] Furthermore, uneven cooling rates are also a significant factor contributing to the deformation of thin-walled cores in actual production. Ordinary molds lack effective cooling system designs, making it difficult to ensure uniform temperature distribution on the mold surface, thus affecting the dimensional accuracy and surface quality of the product. Simultaneously, traditional mold ejection mechanisms rely heavily on manual operation for product collection after ejection, which is not only inefficient but also increases the possibility of human error, hindering automated production.

[0004] Therefore, it is necessary to design a deformation-resistant thin-walled core mold ejection mechanism to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional mold ejection mechanisms, which usually rely on simple mechanical ejector rods for operation and are difficult to provide effective support for thin-walled cores, resulting in low yield and frequent appearance defects, this utility model provides a deformation-resistant thin-walled core mold ejection mechanism.

[0006] The technical implementation scheme of this utility model is as follows: a deformation-resistant thin-walled core mold ejection mechanism, including an injection molding machine, a cavity mold, a sliding plate, a punch, a push plate, an ejector rod, a spring I, and an ejection assembly. A cavity mold is fixedly connected to the left side of the left part of the injection molding machine. A sliding plate is slidably connected between the right side and the left side of the right part of the injection molding machine. A punch corresponding to the cavity mold is fixedly connected to the left side of the sliding plate. The cavity mold and the punch are each provided with two corresponding molding cavities. Push plates are slidably connected to the outer periphery of the two punches. An ejector rod extending to both sides is fixedly connected at the center point of each push plate. The right extension end of the ejector rod passes through the right side of the sliding plate and abuts against the right side of the injection molding machine. A spring I is surrounded around the right extension end of the ejector rod and is located between the right side of the sliding plate and the left side of the injection molding machine. Ejection assemblies are provided on the front and rear sides of the ejector rod.

[0007] As an improvement to the above solution, the ejection assembly includes a blower, a spring tube, a stop bar, and an electric cylinder. A blower with an upward-facing air outlet is installed on the right side of the injection molding machine. A spring tube is connected to and communicates with the air outlet of the blower. The spring tube extends to both sides and is connected to the corresponding ejector rods respectively. An electric cylinder with an output shaft facing left is installed on the left extension end of the ejector rod. A stop bar is fixedly connected to the output shaft of the electric cylinder. The stop bar is adapted to the shape of the middle part of the punch and slides with the outer periphery of the punch.

[0008] As an improvement to the above solution, it also includes a water tank, water pipes and a water pump. A water tank is installed on the lower left side of the injection molding machine, a water pipe is connected to the front of the water tank, and a water pump is installed at the bottom of the water pipe.

[0009] As an improvement to the above solution, it also includes a copper pipe, with the upper part of the water pipe extending into the cavity mold, wherein the part entering the cavity mold is a copper pipe.

[0010] As an improvement to the above solution, it also includes an electric slide rail, a slide plate, a carriage, a hopper, and a cylinder. An electric slide rail is installed on the top of the injection molding machine, and a slide plate is slidably connected to the electric slide rail. A cylinder with a telescopic rod facing the rear is installed on the top of the slide plate. A carriage is fixedly connected to the telescopic rod of the cylinder. The carriage slides in cooperation with the slide plate, and its front end extends downward to the front of the injection molding machine and is fixedly connected to the hopper. The hopper is located between the cavity mold and the punch mold.

[0011] As an improvement to the above scheme, Spring I and the Bourdon tube are made of special alloy spring steel with excellent elasticity and fatigue resistance.

[0012] Beneficial effects: 1. This utility model sets an electric cylinder-driven stop bar on the ejector rod, and makes the stop bar match the shape of the middle part of the punch during the ejection process, forming a synchronous support at both ends of the mold part, effectively dispersing the force and avoiding local stress concentration, thereby preventing deformation or damage to thin-walled parts and improving the product yield.

[0013] 2. This utility model connects a fan to a spring tube and blows air into the mold during the ejection action to accelerate the dissipation of heat from the mold surface and help remove residual air. This achieves a synergistic effect of rapid cooling and stable demolding, thereby improving demolding efficiency and reducing product deformation caused by temperature differences.

[0014] 3. This utility model uses an electric slide rail to drive the slide plate and hopper to move, and combines a cylinder to control the up and down movement of the slide frame, so that the hopper can be flexibly positioned between the concave mold and the convex mold to receive the mold parts after demolding, and then move laterally after collection, realizing the orderly collection and transfer of mold parts, thereby improving the level of production automation, reducing human operation errors and improving overall work efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional structural diagram of the injection molding machine, die, and sliding plate components of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the punch, push plate, and ejector pin components of this utility model.

[0018] Figure 4 This is a cross-sectional structural diagram of the punch, stop bar, and electric cylinder of this utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of the copper pipe, water pipe, and water pump components of this utility model.

[0020] Figure 6 This is a structural diagram of the electric slide rail, slide plate, and slide frame components of this utility model.

[0021] The labels in the diagram are as follows: 1. Injection molding machine, 2. Cavity mold, 3. Sliding plate, 4. Punch, 5. Push plate, 6. Ejector rod, 7. Spring I, 8. Stop bar, 9. Electric cylinder, 10. Bourdon tube, 11. Fan, 12. Copper pipe, 13. Water pipe, 14. Water pump, 15. Water tank, 16. Electric slide rail, 17. Slide plate, 18. Carriage, 19. Hopper, 20. Cylinder. Detailed Implementation

[0022] Example: An ejection mechanism for a deformation-resistant thin-walled core mold, such as... Figures 1-5 As shown, the system includes an injection molding machine 1, a cavity mold 2, a sliding plate 3, a punch 4, a push plate 5, an ejector pin 6, a spring I 7, and an ejection assembly. The cavity mold 2 is bolted to the left side of the injection molding machine 1. The sliding plate 3 is slidably connected between the right side and the left side of the injection molding machine 1. The punch 4, corresponding to the cavity mold 2, is bolted to the left side of the sliding plate 3. The cavity mold 2 and the punch 4 each have two corresponding molding cavities. The push plate 5 is slidably connected to the outer periphery of both punches 4. An ejector pin 6 extending to both sides is bolted to the center point of each push plate 5. The right extension end of the ejector pin 6 passes through the right side of the sliding plate 3 and abuts against the right side of the injection molding machine 1. The right extension end of the ejector pin 6 is surrounded by a spring I 7 and is located between the right side of the sliding plate 3 and the left side of the injection molding machine 1. Ejection assemblies are provided on the front and rear sides of the ejector pin 6.

[0023] like Figure 3 and Figure 4As shown, the ejector assembly includes a blower 11, a spring tube 10, a stop bar 8, and an electric cylinder 9. The blower 11 with its air outlet facing upward is installed on the right side of the injection molding machine 1. The air outlet of the blower 11 is connected to and connected to the spring tube 10. The spring 17 and the spring tube 10 are made of special alloy spring steel with excellent elasticity and fatigue resistance. The spring tube 10 extends to both sides and is connected to the corresponding ejector rod 6 respectively. The left extension end of the ejector rod 6 is equipped with an electric cylinder 9 with its output shaft facing left. The stop bar 8 is connected to the output shaft of the electric cylinder 9 by bolts. The shape of the stop bar 8 is compatible with the middle part of the punch 4 and slides with the outer periphery of the punch 4.

[0024] like Figure 1 and Figure 5 As shown, it also includes a water tank 15, a water pipe 13, a water pump 14, and a copper pipe 12. The water tank 15 is installed on the lower left side of the injection molding machine 1. The water pipe 13 is connected to and communicates with the front side of the water tank 15. The water pump 14 is installed at the lower part of the water pipe 13. The upper part of the water pipe 13 extends into the cavity mold 2, and the part that enters the cavity mold 2 is the copper pipe 12.

[0025] like Figure 1 and Figure 6 As shown, it also includes an electric slide rail 16, a slide plate 17, a slide frame 18, a hopper 19, and a cylinder 20. An electric slide rail 16 is installed on the top of the injection molding machine 1. A slide plate 17 is slidably connected to the electric slide rail 16. A cylinder 20 with a telescopic rod facing the rear is installed on the top of the slide plate 17. A slide frame 18 is connected to the telescopic rod of the cylinder 20 by bolts. The slide frame 18 slides with the slide plate 17. Its front end extends downward to the front of the injection molding machine 1 and is connected to the hopper 19 by bolts. The hopper 19 is located between the cavity mold 2 and the punch mold 4.

[0026] The operator can apply the corresponding technical solutions in this device to the thin-walled core injection molding technology according to the specific situation. When it is necessary to use this device to assist in the ejection operation, firstly, drive the electric slide rail 16 to move the slide plate 17 laterally along the track, so that the hopper 19 installed at the front end of the slide 18 moves out of the current mold area, making room for the mold opening and ejection action, ensuring that there is no obstruction between the concave mold 2 and the convex mold 4 on the left and right sides, which facilitates the smooth progress of the subsequent demolding operation.

[0027] After the mold is closed and the material is injected, the cooling system starts to run. The water pump 14 delivers the coolant in the water tank 15 to the copper pipe 12 inside the cavity mold 2. The excellent thermal conductivity of copper is used to quickly remove the heat from the mold, so that the mold maintains a stable temperature environment, thereby improving the cooling efficiency and molding quality of the product.

[0028] After cooling is complete, the sliding plate 3 drives the punch 4 to slide away from the die 2, achieving die separation. At this time, the push plate 5 moves forward synchronously under the push of the ejector pin 6, applying an ejection force to the thin-walled core from the rear of the die. Simultaneously, the electric cylinder 9 on the front side of the ejector pin 6 is activated, driving the stop rod 8 to move towards the middle of the punch 4. The shape of the stop rod 8 matches the contour of the middle part of the punch 4, providing support force to the front of the thin-walled core after contact, making the force at both ends more consistent, effectively preventing product jamming or deformation caused by uneven local force.

[0029] Based on this, the blower 11 is linked to the ejector rod 6 via the spring tube 10, blowing an appropriate amount of airflow into the mold at the same time as the ejection action is initiated. This airflow not only helps to remove residual air inside the mold, but also creates a certain pressure difference on the surface of the mold parts, assisting the product to be smoothly removed from the mold, further improving the stability and consistency of the overall demolding process, and reducing the risk of defects such as warping and collapse caused by uneven stress on the product.

[0030] After ejection, the electric slide rail 16 actuates again, moving the hopper 19 to the position between the die 2 and the punch 4 to receive the thin-walled core that has just been ejected from the mold. Then, the slide rail continues to move the hopper 19 laterally, completing the collection and transfer of the mold part. This process can be repeated, enabling the orderly collection and processing of multiple mold parts, improving the overall automation level and operational efficiency of production.

[0031] In summary, through the coordinated operation of multiple functional modules such as the electric slide rail 16 and hopper 19, electric cylinder 9 and stop bar 8, fan 11 and spring tube 10, and cooling system, this device demonstrates good adaptability and stability in actual operation.

[0032] Operators can flexibly adjust the action sequence and parameter settings of each component according to different process requirements, thereby achieving precise control of the thin-walled core ejection process, significantly reducing product deformation rate, improving finished product quality and production efficiency, and is suitable for high-precision injection molding scenarios of various complex structural parts.

Claims

1. An ejection mechanism for a deformation-resistant thin-walled core mold, characterized in that: The system includes an injection molding machine, a cavity mold, a sliding plate, a punch, a push plate, an ejector pin, a spring I, and an ejection assembly. The cavity mold is fixedly connected to the left side of the left part of the injection molding machine. A sliding plate is slidably connected between the right side and the left side of the right part of the injection molding machine. A punch corresponding to the cavity mold is fixedly connected to the left side of the sliding plate. The cavity mold and the punch each have two corresponding molding cavities. Push plates are slidably connected to the outer periphery of both punches. An ejector pin extending to both sides is fixedly connected at the center point of each push plate. The right extension end of the ejector pin passes through the right side of the sliding plate and abuts against the right side of the injection molding machine. A spring I is surrounded by the right extension end of the ejector pin and is located between the right side of the sliding plate and the left side of the injection molding machine. Ejection assemblies are provided on the front and rear sides of the ejector pin.

2. The anti-deformation thin-walled core mold ejection mechanism according to claim 1, characterized in that: The ejector assembly includes a blower, a spring tube, a stop bar, and an electric cylinder. A blower with an upward-facing air outlet is installed on the right side of the injection molding machine. A spring tube is connected to and connected to the air outlet of the blower. The spring tube extends to both sides and is connected to the corresponding ejector rods. An electric cylinder with an output shaft facing left is installed on the left extension end of the ejector rod. A stop bar is fixedly connected to the output shaft of the electric cylinder. The stop bar is adapted to the shape of the middle part of the punch and slides with the outer periphery of the punch.

3. The deformation-resistant thin-walled core mold ejection mechanism according to claim 2, characterized in that: It also includes a water tank, water pipes and a water pump. The water tank is installed on the lower left side of the injection molding machine, and a water pipe is connected to the front of the water tank. A water pump is installed at the bottom of the water pipe.

4. The deformation-resistant thin-walled core mold ejection mechanism according to claim 3, characterized in that: It also includes copper pipes, with the upper part of the water pipes extending into the cavity mold, the part of which entering the cavity mold is made of copper pipes.

5. The deformation-resistant thin-walled core mold ejection mechanism according to claim 4, characterized in that: It also includes an electric slide rail, a slide plate, a slide frame, a hopper, and a cylinder. An electric slide rail is installed on the top of the injection molding machine. A slide plate is slidably connected to the electric slide rail. A cylinder with a telescopic rod facing the rear is installed on the top of the slide plate. A slide frame is fixedly connected to the telescopic rod of the cylinder. The slide frame slides in cooperation with the slide plate. Its front end extends downward to the front of the injection molding machine and is fixedly connected to a hopper. The hopper is located between the cavity mold and the punch mold.

6. The anti-deformation thin-walled core mold ejection mechanism according to claim 5, characterized in that: Spring I and the spring tube are made of special alloy spring steel with excellent elasticity and fatigue resistance.

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