Injection mold cutting allowance removal mechanism

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By introducing rollers and protective components into the injection mold cutting allowance removal mechanism, the problem of tool wear was solved, achieving the effect of reducing wear and increasing service life.

CN224489907UActive Publication Date: 2026-07-14

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Filing Date: 2025-06-20
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

Existing injection mold cutting allowance removal mechanisms suffer wear due to the blade adhering to the upper mold during precise cutting, thus reducing the service life of the upper mold.

Method used

Design a cutting allowance removal mechanism for injection molds, which adopts a combination of rollers and protective components. The rollers reduce the probability of the cutting blade contacting the upper mold, and the protective components block debris from splashing and reduce wear.

Benefits of technology

This reduces the contact frequency and resistance between the cutting blade and the upper mold, extends the service life of the cutting blade, and reduces the probability of wear.

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Abstract

The utility model discloses an injection mold cutting allowance removal mechanism, including mounting piece, cutting unit, cutting knife, recess, gyro wheel and protection piece: the mounting piece sets up in one side of injection mold, the part of cutting unit is inserted in the mounting piece, cutting knife is arranged in the cutting unit below, the recess is seted up in the one side of cutting knife top, the gyro wheel is rotatably connected in the recess, and the outer surface of cutting knife below the recess is provided with protection piece. The utility model not only sets up gyro wheel and recess on cutting knife, and gyro wheel will help cutting knife displacement when using, reduces the probability that cutting knife directly and upper die contact when using, and the design of gyro wheel will reduce the resistance when cutting knife moves, and the protection piece is arranged on the side of upper die of cutting knife simultaneously, so that the protection piece will block when cutting knife is splashed by the debris on the upper die, and the probability that cutting knife is damaged is reduced.

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Description

Technical Field

[0001] This utility model relates to the field of injection mold cutting technology, specifically to an injection mold cutting allowance removal mechanism. Background Technology

[0002] The injection mold cutting allowance removal mechanism is a key device used to accurately remove residual material from the mold processing.

[0003] The current injection mold cutting allowance removal mechanism on the market sets a blade groove in the lower mold and is equipped with a servo electric cylinder driven liftable blade assembly to automatically complete the cutting of gate allowance during the mold opening process. In order to achieve precise cutting, one side of the blade body needs to be attached to the outside of the upper mold. The attached blade body will cause wear to the upper mold during cutting and movement, reducing the service life of the upper mold. Utility Model Content

[0004] The purpose of this utility model is to provide a cutting allowance removal mechanism for injection molds, in order to achieve precise cutting, the cutting allowance removal mechanism for injection molds mentioned in the background art requires one side of the cutter body to be attached to the outside of the upper mold, and the attached cutter body will cause wear on the upper mold during cutting and movement, reducing the service life of the upper mold.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cutting allowance removal mechanism for injection molds, comprising a mounting component, a cutting unit, a cutting blade, a groove, a roller, and a protective component: the mounting component is disposed on one side of the injection mold; a portion of the cutting unit is inserted into the mounting component, the cutting unit includes a cutting blade disposed below the mounting component, a groove is formed on one side of the top of the cutting blade, a roller is rotatably connected in the groove, the diameter of the roller is greater than the depth of the groove, and a protective component is disposed on the outer surface of the cutting blade located below the groove.

[0006] Preferably, both the protective component and the cutting blade are provided with locking threaded holes, and a locking threaded bolt is connected inside the locking threaded hole.

[0007] Preferably, the cutting blade has an inverted triangular design, and a mounting block is connected to the top of the cutting blade.

[0008] Preferably, the mounting component includes a mounting plate wrapped around the mounting block, the mounting plate having an insertion slot that is inserted into the mounting block.

[0009] Preferably, the top of the mounting block in the insertion slot is connected to an anti-vibration component, and the top of the anti-vibration component abuts against the top of the insertion slot.

[0010] Preferably, both the mounting plate and the mounting block are provided with bolt grooves, and the bolt grooves on the mounting plate and the mounting block are designed to correspond to each other.

[0011] Preferably, a connecting horizontal plate is connected to one side of the mounting plate, and the connecting horizontal plate and the mounting plate form a 90° angle.

[0012] Preferably, the connecting horizontal plate has a cylinder mounting hole, and a drive source is provided at the bottom of the connecting horizontal plate. The output end of the drive source and the cylinder mounting hole in the connecting horizontal plate are locked together by bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This injection mold cutting allowance removal mechanism sets rollers and grooves on the cutting blade. During use, the rollers help the cutting blade to move, reducing the probability of the cutting blade directly contacting the upper mold. At the same time, the design of the rollers reduces the resistance when the cutting blade moves. In addition, a protective part is set on the side of the cutting blade located on the upper mold, so that when the cutting blade is hit by flying debris from the upper mold, the protective part will block it, reducing the probability of damage to the cutting blade. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This is a side view of the three-dimensional structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the cutting unit structure of this utility model.

[0018] In the picture:

[0019] 1. Mounting component; 11. Mounting plate; 12. Cylinder mounting hole; 13. Connecting cross plate; 14. Insertion slot;

[0020] 2. Cutting unit; 21. Cutting blade; 22. Mounting block; 23. Roller; 24. Anti-shake component; 25. Protective component; 26. Locking threaded hole; 27. Groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figure 1-4 As shown, an injection mold cutting allowance removal mechanism includes a mounting component 1, a cutting unit 2, a cutting blade 21, a groove 27, a roller 23, and a protective component 25. The mounting component 1 is disposed on one side of the injection mold, and the material of the mounting component 1 should be selected according to the specific use of the equipment and the specific material requirements. Part of the cutting unit 2 is inserted into the mounting component 1. The cutting unit 2 includes a cutting blade 21 disposed below the mounting component 1. The material of the cutting blade 21 should be selected to be suitable for the mold material inside the injection mold that needs to be cut. The cutting blade 21 has an inverted triangular design with its tip pointing downwards to cut the object that needs to have cutting allowance in the lower mold. A groove 27 is provided on one side of the top of the cutting blade 21. The groove 27 and the cutting blade 21 are integrally formed, and one side of the groove 27 extends through the outside of the cutting blade 21.

[0024] A roller 23 is rotatably connected within the groove 27, such as Figure 4 As shown, a rotating shaft is inserted into the roller 23. The rotating shaft is detachably and rotatably connected to both ends of the groove 27 via bearings. During use, the roller 23 rotates around the axis of the bearing. Multiple rollers 23 are connected by existing rotatable snap-fit devices. The specific connection method is not the optimization direction of this solution, so it will not be detailed here. The diameter of the roller 23 is larger than the depth of the groove 27, which ensures that one side of the roller 23 extends outside the groove 27 to abut against the outer side of the upper mold. When the cutting blade 21 moves down, the roller 23 will reduce the resistance between the cutting blade 21 and the upper mold, increase the downward speed of the cutting blade 21, and reduce the damage to the cutting blade 21 and the upper mold during use. A protective part 25 is provided on the outer surface of the cutting blade 21 below the groove 27. The protective part 25 is made of rubber or other flexible materials. During use, the protective part 25 will block the debris that splashes onto the cutting blade 21, reducing the probability of wear on the periphery of the cutting blade 21.

[0025] To facilitate the installation between the protective component 25 and the cutting blade 21, locking threaded holes 26 are provided on both the protective component 25 and the cutting blade 21. Locking threaded bolts are connected in the locking threaded holes 26, and the protective component 25 and the cutting blade 21 are connected by bolts to facilitate the replacement and maintenance of the protective component 25.

[0026] To facilitate the fixing of the cutting blade 21 and the mounting part 1, a mounting block 22 is welded to or detachably connected to the top of the cutting blade 21 via bolts or the like. The mounting block 22 and the cutting blade 21 are connected as follows: Figure 4As shown, they are designed at a right angle of 90°, and there is a certain deviation angle between the mounting block 22 and the cutting blade 21 to facilitate the cutting operation of the cutting blade 21 on the lower mold.

[0027] The overall effect of this embodiment is that the material of the cutting blade 21 should be selected to be suitable for the mold material inside the injection mold that needs to be cut, and the cutting blade 21 has an inverted triangular design with its tip pointing downwards, cutting the object in the lower mold that needs to have a cutting allowance. At the same time, the mounting block 22 and the cutting blade 21 are as follows: Figure 4 As shown, they are designed at a right angle of 90°. There is a certain deviation angle between the mounting block 22 and the cutting blade 21. In order to facilitate the cutting operation of the cutting blade 21 on the lower mold, since the diameter of the roller 23 is greater than the depth of the groove 27, one side of the roller 23 can be extended to the outside of the groove 27 to abut against the outside of the upper mold. When the cutting blade 21 moves down, the roller 23 will reduce the resistance between the cutting blade 21 and the upper mold, increase the downward speed of the cutting blade 21 and reduce the damage to the cutting blade 21 and the upper mold during use. The protective part 25 is made of rubber or other flexible materials. During use, the protective part 25 will block the debris that splashes onto the cutting blade 21 and reduce the probability of wear on the periphery of the cutting blade 21.

[0028] Example 2

[0029] like Figure 1-4 As shown, a tooling removal mechanism for removing cutting allowances in injection molds includes a mounting plate 11 wrapped around a mounting block 22. The mounting plate 11 is used to connect and fix to the mounting block 22. An insertion groove 14 is provided within the mounting plate 11. The insertion groove 14 and the mounting plate 11 are integrally molded. The insertion groove 14 and the mounting plate 11 are as follows... Figure 2 The design shown is concave. The insertion slot 14 and the mounting block 22 are inserted into each other. The width of the mounting block 22 is smaller than the internal width of the insertion slot 14. The mounting block 22 and the insertion slot 14 are inserted into each other.

[0030] An anti-shake component 24 is connected to the top of the mounting block 22 inside the insertion slot 14. The anti-shake component 24 is welded to the mounting block 22. The top of the anti-shake component 24 abuts against the top of the insertion slot 14. When in use, the anti-shake component 24 increases the tightness between the mounting block 22 and the insertion slot 14, avoiding the probability of the cutting blade 21 shaking during use.

[0031] In order to lock the mounting block 22 and the insertion slot 14, bolt slots are provided on both the mounting plate 11 and the mounting block 22, and the bolt slots on the mounting plate 11 and the mounting block 22 are designed accordingly.

[0032] One side of the mounting plate 11 is connected to a connecting horizontal plate 13 by welding, flange, bolts, etc., and the connecting horizontal plate 13 and the mounting plate 11 form a 90° angle.

[0033] The connecting horizontal plate 13 has a cylinder mounting hole 12. The cylinder mounting hole 12 and the connecting horizontal plate 13 are integrally formed. The bottom of the connecting horizontal plate 13 is provided with a drive source, which is a cylinder. When in use, the cylinder is connected to an external power supply and a control panel through wires. When in use, the control panel drives the mounting part 1 and the cutting unit 2 up and down, causing the cutting blade 21 to perform cutting. The output end of the drive source and the cylinder mounting hole 12 in the connecting horizontal plate 13 are locked with bolts, which facilitates the later maintenance or replacement of the drive source. At the same time, the bottom of the drive source will be fixed to a designated fixing object, which needs to be selected according to the specific use.

[0034] The effect achieved by the entire embodiment 2 is that, during use, the top of the anti-shake component 24 abuts against the top of the insertion slot 14, and the anti-shake component 24 increases the tightness between the mounting block 22 and the insertion slot 14, avoiding the probability of the cutting blade 21 shaking during use. At the same time, in order to lock the mounting block 22 and the insertion slot 14, the mounting plate 11 and the mounting block 22 are locked together by bolt slots and bolts. During use, the cylinder is connected to the external power supply and the control panel through wires. During use, the control panel drives the mounting component 1 and the cutting unit 2 up and down, causing the cutting blade 21 to perform cutting. This facilitates the later maintenance or replacement of the drive source. At the same time, the bottom of the drive source will be fixed to a designated fixing object, which needs to be selected according to the specific use.

[0035] Working principle: When using this injection mold cutting allowance removal mechanism, the material of the cutting blade 21 should first be selected to be suitable for the mold material inside the injection mold that needs to be cut. The cutting blade 21 has an inverted triangular design with its tip pointing downwards, cutting the object in the lower mold that needs to have its cutting allowance removed. Simultaneously, the mounting block 22 and the cutting blade 21 should be positioned such that... Figure 4 As shown, they are designed at a right angle of 90°. There is a certain deviation angle between the mounting block 22 and the cutting blade 21. In order to facilitate the cutting operation of the cutting blade 21 on the lower mold, since the diameter of the roller 23 is greater than the depth of the groove 27, it can be ensured that one side of the roller 23 extends outside the groove 27 to abut against the outer side of the upper mold. When the cutting blade 21 moves down, the roller 23 will reduce the resistance between the cutting blade 21 and the upper mold, increase the downward speed of the cutting blade 21 and reduce the damage to the cutting blade 21 and the upper mold during use. The protective part 25 is made of rubber or other flexible materials. During use, the protective part 25 will block the debris that splashes onto the cutting blade 21 and reduce the probability of wear on the periphery of the cutting blade 21.

[0036] Secondly, during use, the top of the anti-vibration component 24 abuts against the top of the insertion slot 14. The anti-vibration component 24 increases the tightness between the mounting block 22 and the insertion slot 14, avoiding the probability of the cutting blade 21 shaking during use. At the same time, in order to lock the mounting block 22 and the insertion slot 14, the mounting plate 11 and the mounting block 22 are locked together by bolt slots and bolts. During use, the cylinder is connected to the external power supply and control panel through wires. During use, the control panel drives the mounting component 1 and the cutting unit 2 up and down, causing the cutting blade 21 to perform cutting. This facilitates the later maintenance or replacement of the drive source. At the same time, the bottom of the drive source will be fixed to a designated fixing object, which needs to be selected according to the specific use. Finally, the work of the injection mold cutting allowance removal mechanism is completed.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mechanism for removing cutting allowances from injection molds, characterized in that, include: Mounting component, which is located on one side of the injection mold; A cutting unit is partially inserted into the mounting component. The cutting unit includes a cutting blade disposed below the mounting component. A groove is formed on one side of the top of the cutting blade. A roller is rotatably connected in the groove. The diameter of the roller is greater than the depth of the groove. A protective component is provided on the outer surface of the cutting blade located below the groove.

2. The injection mold cutting allowance removal mechanism according to claim 1, characterized in that: Both the protective component and the cutting blade are provided with locking threaded holes, and locking threaded bolts are connected inside the locking threaded holes.

3. The injection mold cutting allowance removal mechanism according to claim 2, characterized in that: The cutting blade has an inverted triangular design, and a mounting block is connected to the top of the cutting blade.

4. The injection mold cutting allowance removal mechanism according to claim 3, characterized in that: The mounting component includes a mounting plate wrapped around the mounting block, and the mounting plate has a insertion slot that is inserted into the mounting block.

5. The injection mold cutting allowance removal mechanism according to claim 4, characterized in that: An anti-vibration component is connected to the top of the mounting block within the insertion slot, and the top of the anti-vibration component abuts against the top of the insertion slot.

6. The injection mold cutting allowance removal mechanism according to claim 5, characterized in that: Both the mounting plate and the mounting block are provided with bolt grooves, and the bolt grooves on the mounting plate and the mounting block are designed to correspond to each other.

7. The injection mold cutting allowance removal mechanism according to claim 6, characterized in that: A connecting horizontal plate is connected to one side of the mounting plate, and the connecting horizontal plate and the mounting plate form a 90° angle.

8. The injection mold cutting allowance removal mechanism according to claim 7, characterized in that: The connecting horizontal plate has a cylinder mounting hole, and a drive source is provided at the bottom of the connecting horizontal plate. The output end of the drive source and the cylinder mounting hole in the connecting horizontal plate are locked together by bolts.