An automatic separation structure for the gate and the product of a mold

Abstract

This invention discloses an automatic gate-product separation structure for molds, aiming to solve the problem of insufficient automatic cutting and separation of gates on molded products, requiring subsequent manual cutting and resulting in low work efficiency. The invention includes: a movable block, movably mounted in the mold; a driver for driving the movable block to move; and a cutter mounted on the movable block for cutting off the gates on the molded products. This automatic gate-product separation structure of the mold patent application enables automatic separation of the gates and products, improving work efficiency.

Description

Technical Field

[0001] This invention relates to a mold structure, and more specifically, to a structure for automatic separation of the mold gate from the product. Background Technology

[0002] Currently, for pipe fittings manufactured using injection molding, the molded product, runner, and gate are integrated into a single unit. This not only creates resistance for demolding but also requires the runner and gate to be separated from the product later. The commonly used method is manual cutting to separate the runner and gate from the product, which is inefficient, labor-intensive, poses a safety hazard of cutting fingers during operation, and can easily damage the product itself, increasing the defect rate. Summary of the Invention

[0003] To overcome the above shortcomings, the present invention provides an automatic separation structure for the gate and the product of a mold, which can realize the automatic separation of the gate and the product and improve work efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an automatic separation structure for the gate and the product of a mold, comprising:

[0005] The movable block is installed in the mold.

[0006] A driver is used to move the moving block.

[0007] A cutter, mounted on a moving block, is used to cut off the gate on molded products.

[0008] After the product is formed on the mold, the driver moves the moving block, causing the cutter mounted on the moving block to move towards the gate on the product and cut it, automatically separating the gate from the product. During subsequent demolding, the gate and the product are ejected simultaneously, eliminating the need for further gate treatment. This automatic gate-product separation structure of the mold, as described in this patent application, achieves automatic separation of the gate and the product, improving work efficiency.

[0009] Preferably, the moving block is provided with an inclined guide surface, the driver is connected to the top block, and the top block is provided with an inclined pushing surface, which is in contact with the guide surface.

[0010] During the movement of the top block, the movement of the moving block is achieved through the fitting and contact of the pushing surface and the guide surface, making the movement of the moving block more stable and reliable.

[0011] Preferably, the movable block is provided with a T-shaped groove, the guide surface is provided on the bottom surface of the T-shaped groove, the top block is provided with a T-shaped pushing part, the pushing part is adapted to be inserted and connected to the T-shaped groove, and the pushing surface is provided on the surface of the pushing part.

[0012] The T-slot and the pusher enable the moving block to reciprocate during the reciprocating movement of the top block, resulting in a simple structure and stable and reliable operation.

[0013] Preferably, the gate has a rectangular structure at the connection end with the product.

[0014] This structural design facilitates the cutting operation of the gate by the cutter.

[0015] Preferably, a support is installed on the mold, the support is placed above the moving block, a sprue cavity is provided on the surface of the support, and a cutting groove is provided on the support for the cutter to pass through.

[0016] The support facilitates the layout of the gating cavity. The cutter passes through the groove on the support to cut the gating. The cutter is stable and does not easily shake during the cutting process.

[0017] Preferably, the support is provided with a slot that communicates with the sprue cavity, and an ejector rod is installed on the mold, with the end of the ejector rod fitting into the slot.

[0018] When the gate is demolded, the ejector pin pushes the gate out, making the gate demolding operation easier.

[0019] Preferably, the movable block is assembled with the top rod.

[0020] The moving block moves along the top rod, making it more stable and ensuring precise and reliable positioning.

[0021] Preferably, the end face of the cutter is inclined to form the cutting surface.

[0022] The cutting surface formed by the cutter tip has a good cutting effect on the gate, ensuring that the gate can be cut off.

[0023] Preferably, the movable block is provided with a T-shaped mounting groove, and the end of the cutter is provided with a T-shaped connector, which is connected to the mounting groove.

[0024] This connection method between the cutter and the moving block makes it easy to adjust the connection position, and the two are also easy to assemble.

[0025] Preferably, a catapult rod, a push seat, and an impact rod are mounted on the support. The upper end of the catapult rod extends into the gating cavity. A return spring is installed between the catapult rod and the support, and a tension spring is installed between the impact rod and the support. An impact gap is provided between the impact rod and the catapult rod. The cutter is equipped with an abutment block, one end of which has an inclined push surface. An abutment spring is installed between the push seat and the support, and the push seat abuts against the abutment block. A protruding positioning block is provided on the end face of the push seat, and an inclined guide groove is provided on the positioning block. One end of the guide groove extends to the end face of the push seat, and the other end extends... Upon reaching the end face of the positioning block, a cover plate is installed at the opening end of the guide groove on the end face of the positioning block; a guide rod is provided on the impact rod, and the guide rod abuts against the end face of the positioning block; the cutter moves towards the direction of the gate cavity, and as the push seat slides to the push surface, the push seat moves towards the direction of the cutter until the guide rod slides away from the end face of the positioning block and moves towards the end face of the push seat, the impact rod hits the ejector rod, causing the ejector rod to eject towards the gate cavity; the cutter moves away from the gate cavity, the push surface pushes the push seat back to its original position, causing the guide groove to push the guide rod back to its original position, and the guide rod pushes open the cover plate and abuts against the end face of the positioning block.

[0026] The cutter moves towards the gate cavity to cut the gate. As the cutter continues to move, the push seat slides onto the push surface. Under the action of the abutment spring, the push seat moves towards the cutter, causing the guide rod to slide away from the end face of the positioning block and move towards the end face of the push seat. Under the action of the tension spring, the impact rod hits the ejector rod, causing the ejector rod to eject towards the gate cavity, impacting the gate and allowing the gate to be completely separated from the product. This facilitates the separation of the gate from the gate cavity and makes it easier for the gate to be reliably demolded in the future.

[0027] Compared with the prior art, the beneficial effects of the present invention are: the automatic separation structure of the mold gate and the product of this patent application can realize the automatic separation of the gate and the product, thereby improving work efficiency. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the working state of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the present invention;

[0030] Figure 3 This is a cross-sectional view of Embodiment 1 of the present invention;

[0031] Figure 4 This is a partial exploded view of the present invention;

[0032] Figure 5 This is a partial structural schematic diagram of Embodiment 2 of the present invention;

[0033] In the diagram: 1. Moving block, 2. Mold, 3. Driver, 4. Cutter, 5. Gate, 6. Guide surface, 7. Ejector block, 8. Connecting groove, 9. Slider, 10. Push surface, 11. T-slot, 12. Pushing part, 13. Cutting surface, 14. Mounting groove, 15. Connector, 16. Support, 17. Gate cavity, 18. Runner, 19. Groove, 20. Product, 21. Ejector pin, 22. Clearance hole 23. Ejector rod, 24. Push seat, 25. Impact rod, 26. Return spring, 27. Tension spring, 28. Impact spacing, 29. Abutment block, 30. Pushing surface, 31. Abutment spring, 32. Abutment rod, 33. Positioning block, 34. Guide groove, 35. Flange, 36. Cover plate, 37. Guide rod, 38. Mounting hole, 39. Positioning ring, 40. Protruding ring, 41. Flange, 42. Sliding hole. Detailed Implementation

[0034] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0035] Example 1: An automatic separation structure for the gate and the product of a mold (see attached diagram) Figure 1 To be continued Figure 4 ),include:

[0036] Movable block 1 is movably installed in mold 2; the mold includes a moving mold and a fixed mold, and the movable block is installed on the moving mold.

[0037] Driver 3 is used to drive the moving block to move;

[0038] Cutter 4, mounted on the moving block, is used to cut off the gate 5 on the molded product.

[0039] The moving block has an inclined guide surface 6. A driver is connected to a top block 7. The driver is a piston cylinder, and the piston cylinder's telescopic rod is connected to the top block. The top block has a T-shaped connecting groove 8, and the end of the piston cylinder's telescopic rod has a T-shaped slider 9, which is fitted into the connecting groove. The top block has an inclined pushing surface 10, which fits against the guide surface. The moving block has a T-shaped groove 11, with the guide surface located on the bottom surface of the T-shaped groove. The top block has a T-shaped pushing part 12, which is fitted into the T-shaped groove. The pushing surface is located on the surface of the pushing part. The gate has a rectangular structure at the connection end with the product. The cutter has a rod-shaped structure, with an inclined end face forming a cutting surface 13. The top of the cutter is a cutting edge, close to the outer wall of the product. The moving block has a T-shaped mounting groove 14, and the end of the cutter has a T-shaped connector 15, which is connected to the mounting groove.

[0040] A support 16 is installed on the mold, positioned above the movable block. A sprue cavity 17 is provided on the surface of the support. A runner 18 is installed on the mold, with its end positioned at the sprue cavity. A cutting groove 19 for a cutter to pass through is provided on the support, communicating with the sprue cavity. A slot hole communicating with the sprue cavity is provided on the support. Ejector rods 21 are installed on the mold, with several ejector rods. One ejector rod's end is fitted into the slot hole and contacts the sprue, while the ends of the other ejector rods contact the surface of the product. The movable block and ejector rods are movably fitted together, with the ejector rods acting as guides during the movement of the movable block. An elongated clearance hole 22 is provided on the ejector block, through which the ejector rod connected to the movable block passes.

[0041] After the product 20 is formed on the mold, the driver moves the moving block, causing the cutter mounted on the moving block to move towards the gate of the product and cut it, thus automatically separating the gate from the product. During subsequent demolding, the gate and the product are ejected simultaneously, and the demolded product does not require further treatment of the gate. This automatic gate-product separation structure of the mold in this patent application achieves automatic separation of the gate and the product, improving work efficiency.

[0042] Example 2: An automatic separation structure for the gate and the product of a mold (see appendix) Figure 5Its structure is similar to that of Embodiment 1, with the main difference being that in this embodiment, a catapult rod 23, a push seat 24, and an impact rod 25 are installed on the support. The upper end of the catapult rod extends to the gate cavity. A return spring 26 is installed between the catapult rod and the support, and a tension spring 27 is installed between the impact rod and the support. An impact gap 28 is provided between the impact rod and the catapult rod. An abutment block 29 is provided on the cutter, and an inclined push surface 30 is provided at one end of the abutment block. An abutment spring 31 is installed between the push seat and the support. An abutment rod 32 is provided on the push seat, and the push seat abuts against the abutment block through the abutment rod. A protruding positioning block 33 is provided on the end face of the push seat, and an inclined guide groove 34 is provided on the positioning block. One end of the guide groove extends to the end face of the push seat, and the other end extends to the end face of the positioning block. The side wall of the positioning block has a flared opening 35 communicating with the guide groove. A cover plate 36 is installed at the opening end of the guide groove on the end face of the positioning block. The end of the cover plate away from the abutment block is hinged to the positioning block. A positioning torsion spring is installed between the cover plate and the positioning block, with the other end of the cover plate abutting against the positioning block. A guide rod 37 is provided on the impact rod, abutting against the end face of the positioning block. A mounting hole 38 is provided on the support, in which a positioning ring 39 is installed. A convex ring 40 is provided on the impact rod, and a flange 41 is provided on the ejector rod. Both the ejector rod and the impact rod are connected to the mounting hole, with the flange abutting against the positioning ring. A return spring abuts against the flange. A tension spring is connected between the positioning ring and the convex ring. A sliding hole 42 is provided on the support corresponding to the push seat. One end of the push seat is slidably installed in the sliding hole, and the abutment spring is installed in the sliding hole. The cutter moves towards the gating cavity, and as the pusher slides to the pusher surface, it moves towards the cutter until the guide rod slides away from the end face of the positioning block and moves towards the end face of the pusher. The impact rod strikes the ejector rod, causing the ejector rod to eject towards the gating cavity. The cutter moves away from the gating cavity, and the pusher surface pushes the pusher back to its original position, causing the guide groove to push the guide rod back to its original position. The guide rod pushes open the cover plate and abuts against the end face of the positioning block. Other structures are the same as in Embodiment 1.

[0043] The cutter moves towards the gate cavity to cut the gate. As the cutter continues to move, the push seat slides onto the push surface. Under the action of the abutment spring, the push seat moves towards the cutter, causing the guide rod to slide away from the end face of the positioning block and move towards the end face of the push seat. Under the action of the tension spring, the impact rod hits the ejector rod, causing the ejector rod to eject towards the gate cavity, impacting the gate and allowing the gate to be completely separated from the product. This facilitates the separation of the gate from the gate cavity and makes it easier for the gate to be reliably demolded in the future.

[0044] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A structure for automatically separating the gate and the product in a mold, characterized in that, include: The movable block is installed in the mold. A driver is used to move the moving block. A cutter, mounted on a moving block, is used to cut off the gate on the molded product; A support is installed on the mold, and an ejector rod, a pusher, and an impact rod are installed on the support. The upper end of the ejector rod extends to the gate cavity. A return spring is installed between the ejector rod and the support, and a tension spring is installed between the impact rod and the support. A cutter has an abutment block with an inclined push surface at one end. An abutment spring is installed between the pusher and the support, and the pusher abuts against the abutment block. A protruding positioning block is provided on the end face of the pusher. An inclined guide groove is provided on the positioning block, with one end extending to the end face of the pusher and the other end extending to the end face of the positioning block. A guide rod is provided on the impact rod, and the guide rod abuts against the end face of the positioning block. The cutter cuts the gate, the pusher moves towards the cutter, causing the guide rod to slide away from the end face of the positioning block and move towards the end face of the pusher, and the ejector rod ejects and impacts the gate.

2. The automatic separation structure between the gate and the product of a mold according to claim 1, characterized in that, An inclined guide surface is provided on the moving block, and the driver is connected to the top block. The top block is provided with an inclined pushing surface, which is in contact with the guide surface.

3. The automatic separation structure between the gate and the product of a mold according to claim 2, characterized in that, The movable block is provided with a T-shaped groove, and the guide surface is provided on the bottom surface of the T-shaped groove. The top block is provided with a T-shaped pushing part, which is adapted to be inserted and connected to the T-shaped groove. The pushing surface is provided on the surface of the pushing part.

4. The automatic separation structure between the gate and the product of a mold according to claim 1, characterized in that, The gate has a rectangular structure at the connection end with the product.

5. The automatic separation structure between the gate and the product of a mold according to claim 1, characterized in that the support... It is placed above the moving block, and a sprue groove is provided on the surface of the support. The support is provided with a cutting groove for the cutter to pass through.

6. The automatic separation structure between the gate and the product of a mold according to claim 5, characterized in that, The support has a slot that communicates with the sprue cavity, and an ejector pin is installed on the mold. The end of the ejector pin is fitted into the slot.

7. The automatic separation structure between the gate and the product of a mold according to claim 6, characterized in that, The movable block and the top rod are assembled together.

8. The automatic separation structure between the gate and the product of a mold according to claim 1, characterized in that, The cutting blade is angled to form a cutting surface.

9. The automatic separation structure between the gate and the product of a mold according to any one of claims 1 to 8, characterized in that, The moving block has a T-shaped mounting groove, and the cutter end has a T-shaped connector that is connected to the mounting groove.

10. The automatic separation structure between the gate and the product of a mold according to claim 5, characterized in that, An impact gap is provided between the impact rod and the ejector rod, and a cover plate is installed at the opening end of the guide groove on the end face of the positioning block; the cutter moves towards the gate cavity, and as the push seat slides to the push surface, the push seat moves towards the cutter until the guide rod slides away from the end face of the positioning block and moves towards the end face of the push seat. The impact rod hits the ejector rod, causing the ejector rod to eject towards the gate cavity; the cutter moves away from the gate cavity, and the push surface pushes the push seat back to its original position, causing the guide groove to push the guide rod back to its original position. The guide rod pushes open the cover plate and abuts against the end face of the positioning block.

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