A positioning device for milling a slot in an injection mold insert

Abstract

The application relates to the field of injection molds, in particular to an injection mold insert milling groove positioning device, which comprises a supporting seat, a mold box is arranged on the upper side of the supporting seat, an insert groove is arranged on the left side of the mold box, a first straight rack is movably arranged on the lower side of a device frame, a device plate is movably arranged on the device frame, an insert is fixedly arranged on the right side of the device plate, the insert can be movably arranged in the insert groove, a rotating gear is arranged in the device box, a second driven wheel is rotatably arranged on the rear side of the device box, a motor is arranged on the rear side of the second driven wheel, a second transmission gear is arranged on the right side of the rotating gear, a second device groove is arranged on the front side of the device box, a second connecting rod is fixedly connected with a second moving rod at the other end, a push plate is movably arranged in the mold box, the second moving rod is fixedly connected with the push plate at the lower end, and the second moving rod is movably arranged on the mold box, so that the injection molded product can be prevented from having bubbles and demolding and ejection can be realized, and the high-temperature insert can be automatically moved out.

Description

Technical Field

[0001] This invention relates to the field of injection molds, specifically to an injection mold insert milling groove positioning device. Background Technology

[0002] Inserts are replaceable parts in molds, secured with screws and embedded in the mold cavity. In plastic molds or die-casting molds, some cores and cavities cannot be machined in one go and need to be assembled from several components; those components that are pieced together are inserts. Inserts are an integral part of the overall structure of the mold.

[0003] In the injection molding process of large plastic products, inserts are often placed in the mold to modify its shape due to the shape requirements of the plastic products. These inserts need to be removed after injection molding to allow the molded product to be taken out. However, because the temperature of the injection liquid is extremely high, both the inserts and the molded product become very hot and cannot be removed directly. Furthermore, manual removal poses a risk of burns. Secondly, due to the large volume of injection liquid, if it is left to run unchecked during injection, it will rapidly come into contact with the gas inside the injection cavity, causing the liquid to trap the gas and resulting in bubbling in the molded product. This negatively impacts the quality of the molded product. Based on these issues, this solution proposes an innovative design. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a positioning device for milling grooves in injection mold inserts.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a positioning device for milling grooves of injection mold inserts, including a support base, a mold box is provided on the upper side of the support base, and an insert groove is provided on the left side of the mold box. A device frame is fixedly provided on the left side of the mold box outside the insert groove. A first straight rack is movably installed on the lower side of the device frame. A device plate is provided on the outer side of the insert groove on the left side of the mold box. The device plate is movably installed on the device frame and can be fixedly connected to the right end of the first straight rack. An insert is fixedly installed on the right side of the device plate and can be movably installed inside the insert groove. A first transmission gear is meshed on the lower side of the first straight rack. A first driven wheel is fixedly connected to the rear center position of the first transmission gear. A device box is fixedly provided on the upper side of the support base on the rear side of the mold box. A rotating gear is provided inside the device box. A second driven wheel is fixedly connected to the center of the rear side of the moving gear. The second driven wheel is rotatably mounted on the rear side of the device box, and a conveyor belt is installed between the second driven wheel and the first driven wheel. A motor is installed on the rear side of the second driven wheel. A second transmission gear is installed on the right side of the rotating gear, and the second transmission gear can mesh with the rotating gear. A second spur rack is meshed on the right side of the second transmission gear, and the second spur rack is movably mounted on the device box. A second connecting rod is fixedly connected to the front side of the second spur rack. A second device slot is provided on the front side of the device box, and the second connecting rod is movably mounted inside the second device slot. The other end of the second connecting rod is fixedly connected to a second moving rod. A push plate is movably mounted inside the mold box, and the lower end of the push plate is fixedly connected to the second moving rod, and the second moving rod is movably mounted on the mold box.

[0006] Specifically, a first moving rod is movably installed on the upper side of the device frame, a first connecting rod is fixedly installed on the upper end of the first straight rack, and the other end of the first connecting rod is fixedly installed on the first moving rod. The right side of the first moving rod is rotatably connected to a first rotating rod.

[0007] Specifically, a first device slot is provided on the mold box on the upper side of the insert slot, and a first rotating rod is installed inside the first device slot. A device cavity is provided inside the mold box on the rear side of the first device slot. A third moving rod is movably installed inside the device cavity on the upper side of the insert slot, and the other end of the first rotating rod is rotatably connected to the third moving rod. The front and rear sides of the third moving rod are respectively rotatably connected to the second rotating rod, and a fixing column is rotatably installed at the non-end point of the second rotating rod. The fixing column is fixedly installed on the mold box. The other end of the second rotating rod is rotatably connected to the clamping rod, and the clamping rod is movably installed inside the device cavities on the front and rear sides of the insert slot.

[0008] Specifically, the inner wall of the mold box is evenly provided with several drainage grooves, and a sealing layer is fixedly installed on the outer side of the push plate, and the sealing layer can be sealed with the mold box and the insert.

[0009] Specifically, a support frame is fixedly installed on the upper side of the support base, and the mold box is fixedly installed on the support frame.

[0010] Specifically, the mold box is provided with an injection cavity, and the injection molded part is fixedly installed on the support seat on the upper side of the injection cavity.

[0011] The beneficial effects of this invention are:

[0012] The present invention discloses an injection mold insert milling and positioning device, which utilizes a first driven wheel, a first transmission gear, a first spur rack, and a device plate. The first driven wheel, through the first transmission gear, causes the first spur rack to rotate left and right on the lower side of the device frame. The first spur rack, through the device plate, drives the insert to move, install, and extend within the insert slot of the mold box, thereby enabling the installation and removal of the insert within the insert slot. This reduces the contact between the high-temperature insert and the human body during removal, improving the safety of the device. Furthermore, the second moving rod, rotating gear, second transmission, push plate, and second spur rack work together. The second transmission gear, through the second spur rack, drives the second connecting rod to move up and down, which in turn causes the second moving rod to drive the push plate to move up and down within the injection cavity of the mold box. This allows a large amount of injection liquid to slowly move down through the push plate during its downward movement, preventing excessive injection speed that could cause bubbling in the injection molded product. The upward movement of the push plate also facilitates demolding of the injection molded product.

[0013] The present invention discloses an injection mold insert milling groove positioning device, which uses a third moving rod, a fixed column, a second rotating rod, a clamping rod, and a device cavity in cooperation. A first straight rack drives the first moving rod to move left and right on the device frame through a first connecting rod, and then drives the first rotating rod to rotate through the device frame, causing the third moving rod to move up and down inside the device cavity, thereby causing the clamping rod to move inside the device cavity, realizing the clamping, fixing, and releasing of the insert. When the insert is fixed, it reduces the outward pushing force of the injection liquid on the insert during the injection molding process, prevents the insert from moving outward inside the insert groove, and prevents the insert from moving outward and causing changes in the shape of the injection molded product. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the middle BB section;

[0017] Figure 3 For the present invention Figure 1 Enlarged structural diagram of section A in the middle;

[0018] Figure 4 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the central CC section;

[0019] Figure 5 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the middle DD section;

[0020] Figure 6 For the present invention Figure 1 A schematic diagram of the structure of the second connecting rod and the device box;

[0021] Figure 7 For the present invention Figure 1 A schematic diagram of the structure of the central device frame and the first movable rod;

[0022] Figure 8 For the present invention Figure 1 A schematic diagram of the structure of the central device plate and inserts;

[0023] In the diagram: 1. Support base; 2. Support frame; 3. Mold box; 4. Injection cavity; 5. Injection part; 6. Device frame; 7. First moving rod; 8. First connecting rod; 9. Conveyor belt; 10. First driven wheel; 11. First transmission gear; 12. Second driven wheel; 13. First straight rack; 14. Device plate; 15. First device slot; 16. First rotating rod; 17. Second moving rod; 18. Second connecting rod; 19. Second device slot; 20. Device box; 21. Insert; 22. Third moving rod; 23. Fixed column; 24. Second rotating rod; 25. Clamping rod; 26. Device cavity; 27. Rotating gear; 28. Second transmission gear; 29. ​​Motor; 30. Insert slot; 31. Push plate; 32. Drainage groove; 33. Sealing layer; 34. Second straight rack. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figures 1-8As shown, the injection mold insert milling and positioning device of the present invention includes a support base 1, a mold box 3 is provided on the upper side of the support base 1, and an insert groove 30 is provided on the left side of the mold box 3. A device frame 6 is fixedly provided on the left side of the mold box 3 outside the insert groove 30. A first straight rack 13 is movably installed on the lower side of the device frame 6. A device plate 14 is provided on the outer side of the insert groove 30 on the left side of the mold box 3. The device plate 14 is movably installed on the device frame 6 and can be fixedly connected to the right end of the first straight rack 13. An insert 21 is fixedly installed on the right side of the device plate 14 and can be movably installed inside the insert groove 30. A first transmission gear 11 is meshed on the lower side of the first straight rack 13. The rear center position of the first transmission gear 11 is... A fixed shaft connects to the first driven wheel 10. A device box 20 is fixedly mounted on the upper side of the support base 1 at the rear of the mold box 3. A rotating gear 27 is installed inside the device box 20. A second driven wheel 12 is fixedly connected to the center of the rear of the rotating gear 27. The second driven wheel 12 is rotatably mounted on the rear side of the device box 20, and a conveyor belt 9 is installed between the second driven wheel 12 and the first driven wheel 10. A motor 29 is installed on the rear side of the second driven wheel 12. The rotation of the first driven wheel 10 drives the first transmission gear 11, which is fixedly connected to it, to rotate. The rotation of the first transmission gear 11 drives the first spur rack 13, which is meshed with it, to rotate left and right on the lower side of the device frame 6. The left and right movement of the first spur rack 13 drives the device plate 14, which is fixedly connected to it, to rotate on the device. The device plate 14 moves horizontally left and right on the frame 6, causing the insert 21 fixedly mounted on it to move and extend inside the insert slot 30 of the mold box 3, thus realizing the installation and removal of the insert 21 inside the insert slot 30. A second transmission gear 28 is installed on the right side of the rotating gear 27, and the second transmission gear 28 can mesh with the rotating gear 27. A second spur rack 34 is meshed on the right side of the second transmission gear 28, and the second spur rack 34 is movably mounted on the device box 20. The front side of the second spur rack 34 is fixedly connected to the second connecting rod 18. A second device slot 19 is provided on the front side of the device box 20, and the second connecting rod 18 is movably mounted inside the second device slot 19. The other end of the second connecting rod 18 is fixedly connected to the second device slot 19. The second moving rod 17 is fixedly connected to the lower end of the push plate 31 inside the mold box 3. The second moving rod 17 is movably mounted on the mold box 3. The second transmission gear 28 drives the second connecting rod 18 to move up and down through the second spur rack 34. This causes the second moving rod 17, which is fixedly connected to the second connecting rod 18, to move up and down inside the injection cavity 4 of the mold box 3. The second moving rod 17 drives the push plate 31, which is fixedly connected to it, to move up and down. This allows a large amount of injection liquid to slowly move down through the push plate 31 during the downward movement of the push plate 31, preventing the injection liquid from being injected too quickly and causing bubbles in the injection molded product. The upward movement of the push plate 31 also helps to demold the injection molded product.

[0026] Specifically, a first moving rod 7 is movably installed on the upper side of the device frame 6, a first connecting rod 8 is fixedly installed on the upper end of the first straight rack 13, and the other end of the first connecting rod 8 is fixedly installed on the first moving rod 7. The right side of the first moving rod 7 is rotatably connected to the first rotating rod 16.

[0027] Specifically, a first device groove 15 is provided on the mold box 3 on the upper side of the insert groove 30, and a first rotating rod 16 is installed inside the first device groove 15. A device cavity 26 is provided inside the mold box 3 on the rear side of the first device groove 15. A third moving rod 22 is movably installed inside the device cavity 26 on the upper side of the insert groove 30, and the other end of the first rotating rod 16 is rotatably connected to the third moving rod 22. The front and rear sides of the third moving rod 22 are respectively rotatably connected to the second rotating rod 24, and a fixing post 23 is rotatably installed at the non-end point of the second rotating rod 24. The fixing post 23 is fixedly installed on the mold box 3. The other end of the second rotating rod 24 is rotatably connected to the clamping rod 25, and the clamping rod 25 is movably installed inside the device cavities 26 on the front and rear sides of the insert groove 30 to clamp and fix the insert 21. During the injection molding process, the external pushing force generated by a large amount of injection liquid on the insert 21 is reduced, preventing the insert 21 from moving outward inside the insert groove 30 and preventing the insert 21 from moving outward and causing the shape of the injection molded product to change.

[0028] Specifically, several drainage grooves 32 are evenly arranged on the inner wall of the mold box 3, and a sealing layer 33 is fixedly installed on the outer side of the push plate 31. The sealing layer 33 can be sealed with the mold box 3 and the insert 21. The drainage grooves 32 inside the mold box 3 drain a large amount of injection liquid on the upper side of the push plate 31, further reducing the generation of air bubbles in the injection molded product. The sealing layer 33 reduces the gap between the push plate 31 and the mold box 3 and the insert 21.

[0029] Specifically, a support frame 2 is fixedly installed on the upper side of the support base 1, and the mold box 3 is fixedly installed on the support frame 2, so that there is a distance between the mold box 3 and the support frame 2, which facilitates the second moving rod 17 to move up and down inside the mold box 3.

[0030] Specifically, the mold box 3 has an injection cavity 4 inside, and the injection molded part 5 is fixedly installed on the support seat 1 on the upper side of the injection cavity 4.

[0031] Working principle: The motor 29 is started, driving the second driven wheel 12 connected to it to rotate. The second driven wheel 12, through the conveyor belt 9 installed with it, drives the first driven wheel 10, which is also installed with the conveyor belt 9, to rotate. At this time, the rotating gear 27 is not meshed with the second transmission gear 28. The rotation of the first driven wheel 10 drives the first transmission gear 11, which is fixedly connected to it, to rotate. The rotation of the first transmission gear 11 drives the first spur rack 13, which is meshed with it, to rotate to the right on the lower side of the device frame 6. The rightward movement of the first spur rack 13 causes the device plate 14, which is fixedly connected to it, to move horizontally to the right on the device frame 6. The device plate 14 causes the insert 21, which is fixedly installed on it, to move to the right into the insert slot 30 of the mold box 3, thus fixing the insert 21 inside the insert slot 30. Simultaneously, the first spur rack 13, through its connection with the second transmission gear 28, rotates the first transmission gear 10 to rotate the first transmission gear 11, which is fixedly connected to it, to rotate the first transmission gear 11, which is fixedly connected to it, to rotate the first transmission gear 11, which is fixedly connected to it, to rotate the first transmission gear 10. The first connecting rod 8, which is fixedly connected to the first connecting rod 8, drives the first moving rod 7, which is fixedly connected to the first connecting rod 8, to move to the right on the device frame 6. The rightward movement of the device frame 6 drives the first rotating rod 16, which is rotatably connected to it, to rotate inside the first device groove 15. While the first rotating rod 16 is rotating, it drives the third moving rod 22, which is rotatably connected to its other end, to move downward inside the device cavity 26. When the third moving rod 22 moves downward, it drives the second rotating rod 24, which is rotatably connected to both sides of it, to rotate around the fixed column 23. This causes the clamping rod 25, which is rotatably connected to the other end of the second rotating rod 24, to move towards the insert 21, thereby clamping and fixing the insert 21. During the injection molding process, this reduces the outward thrust of a large amount of injection liquid on the insert 21, preventing the insert 21 from moving outward inside the insert groove 30 and preventing the insert 21 from moving outward, which would cause the shape of the injection molded product to change.

[0032] The second driven wheel 12 drives the rotating gear 27, which is fixedly connected to it, to continue rotating, causing the rotating gear 27 to mesh with the second transmission gear 28. Simultaneously, the injection molding component 5 is activated, causing it to inject material into the injection cavity 4 in the mold box 3. Next, the second transmission gear 28 drives the second spur rack 34, which is meshed with it, to move downwards inside the device box 20. The second spur rack 34, through the second connecting rod 18 fixedly connected to it, drives the second moving rod 17 fixedly connected to it to move downwards inside the injection cavity 4 of the mold box 3. The second moving rod 17 drives the push plate 31 fixedly connected to it to move downwards. During the downward movement of the push plate 31, a large amount of injection liquid slowly moves downwards through the push plate 31, preventing the injection liquid from being injected into the cavity. Excessive speed causes bubbling in the injection molded product. Simultaneously, a large amount of injection liquid is drained from the upper side of the push plate 31 through the venting channel 32 inside the mold box 3, allowing the injection liquid to slowly inject and mold from the bottom of the injection cavity 4 until the push plate 31 moves to the bottom of the injection cavity 4, allowing the injection molded part 5 to continue injection molding into the injection cavity 4. When the injection liquid fills the injection cavity 4, the injection molding is complete, and the injection molded part 5 is closed. Simultaneously, the motor 29 drives the second driven wheel 12, which is installed with it, to rotate in the opposite direction. The second driven wheel 12, through the conveyor belt 9 installed with it, drives the first driven wheel 10, which is installed with the conveyor belt 9, to rotate in the opposite direction. At this time, the rotating gear 27 is not meshed with the second transmission gear 28. The first driven wheel 10, through the second... A transmission gear 11 drives a first straight rack 13 to rotate to the left on the lower side of the device frame 6. The first straight rack 13 drives a first moving rod 7 to move to the left on the device frame 6 via a first connecting rod 8. The leftward movement of the device frame 6 causes the first rotating rod 16, which is rotatably connected to it, to rotate in the opposite direction inside the first device slot 15. At the same time, the rotation of the first rotating rod 16 causes the third moving rod 22, which is rotatably connected to its other end, to move upward inside the device cavity 26. When the third moving rod 22 moves upward, it causes the second rotating rod 24, which is rotatably connected to its two sides, to rotate in the opposite direction around the fixed column 23. This causes the clamping rod 25, which is rotatably connected to the other end of the second rotating rod 24, to move away from the insert 21, releasing the clamping fixation of the insert 21. The leftward movement of the device plate 14, which is fixedly connected to it, causes it to move horizontally to the left on the device frame 6. The device plate 14 causes the insert 21 fixedly mounted on it to move to the left, thereby causing the insert 21 to move out of the insert slot 30 of the mold box 3, realizing the disengagement of the insert 21 from the insert slot 30. At the same time, the second driven wheel 12 drives the rotating gear 27, which is fixedly connected to it, to continue to rotate in the opposite direction, so that the rotating gear 27 meshes with the second transmission gear 28. The second transmission gear 28 drives the second spur rack 34 to move upward inside the device box 20. The second spur rack 34 drives the second moving rod 17 to move upward inside the injection cavity 4 of the mold box 3 through the second connecting rod 18. The second moving rod 17 drives the push plate 31, which is fixedly connected to it, to move upward.Then, the injection-molded product after the insert 21 is detached is moved upwards for demolding, reducing the risk of contact between the high-temperature insert 21 and the injection-molded product and the human body.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for milling grooves of injection mold inserts, comprising a support base (1), characterized in that: A mold box (3) is provided on the upper side of the support base (1), and a block groove (30) is provided on the left side of the mold box (3). A device frame (6) is fixedly provided on the left side of the mold box (3) outside the block groove (30). A first straight rack (13) is movably installed on the lower side of the device frame (6). A device plate (14) is provided on the outer side of the block groove (30) on the left side of the mold box (3). The device plate (14) is movably installed on the device frame (6), and the device plate (14) can be fixedly connected to the right end of the first straight rack (13). A fixed insert (21) is mounted on the right side, and the insert (21) can be movably mounted inside the insert slot (30). The first straight rack (13) meshes with the first transmission gear (11) on its lower side. The first transmission gear (11) is fixedly connected to the first driven wheel (10) at the rear center position. The device box (20) is fixedly mounted on the upper side of the support seat (1) on the rear side of the mold box (3). A rotating gear (27) is provided inside the device box (20). The second driven wheel (12) is fixedly connected to the rear center position of the rotating gear (27). Two driven wheels (12) are rotatably mounted on the rear side of the device box (20), and a conveyor belt (9) is installed between the second driven wheel (12) and the first driven wheel (10). A motor (29) is installed on the rear side of the second driven wheel (12). A second transmission gear (28) is installed on the right side of the rotating gear (27), and the second transmission gear (28) can mesh with the rotating gear (27). A second spur rack (34) is meshed on the right side of the second transmission gear (28), and the second spur rack (34) is movably mounted on the device box. On (20), the front side of the second straight rack (34) is fixedly connected to the second connecting rod (18), the front side of the device box (20) is provided with a second device groove (19), and the second connecting rod (18) is movably installed inside the second device groove (19). The other end of the second connecting rod (18) is fixedly connected to the second moving rod (17). The mold box (3) is movably installed with a push plate (31), the lower end of the push plate (31) is fixedly connected to the second moving rod (17), and the second moving rod (17) is movably installed on the mold box (3).

2. The injection mold insert milling groove positioning device according to claim 1, characterized in that: The first moving rod (7) is movably installed on the upper side of the device frame (6), the first connecting rod (8) is fixedly installed on the upper end of the first straight rack (13), and the other end of the first connecting rod (8) is fixedly installed on the first moving rod (7). The first moving rod (7) is rotatably connected to the first rotating rod (16) on the right side. A first device slot (15) is provided on the mold box (3) on the upper side of the insert slot (30), and a first rotating rod (16) is installed inside the first device slot (15). A device cavity (26) is provided inside the mold box (3) on the rear side of the first device slot (15). A third moving rod (22) is movably installed inside the device cavity (26) on the upper side of the insert slot (30), and the other end of the first rotating rod (16) is rotatably connected to the third moving rod (22). The front and rear sides of the third moving rod (22) are respectively rotatably connected to the second rotating rod (24), and a fixing column (23) is rotatably installed at the non-end point of the second rotating rod (24), and the fixing column (23) is fixedly installed on the mold box (3). The other end of the second rotating rod (24) is rotatably connected to the clamping rod (25), and the clamping rod (25) is movably installed inside the device cavity (26) on the front and rear sides of the insert slot (30).

3. The injection mold insert milling groove positioning device according to claim 2, characterized in that: The inner wall of the mold box (3) is uniformly provided with several drainage grooves (32), and a sealing layer (33) is fixedly installed on the outer side of the push plate (31), and the sealing layer (33) can be sealed with the mold box (3) and the insert (21).

4. The injection mold insert milling groove positioning device according to claim 3, characterized in that: The support frame (2) is fixedly installed on the upper side of the support base (1), and the mold box (3) is fixedly installed on the support frame (2).

5. The injection mold insert milling groove positioning device according to claim 4, characterized in that: The mold box (3) is provided with an injection cavity (4), and the injection molded part (5) is fixedly installed on the support seat (1) on the upper side of the injection cavity (4).

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