One-dragging-three simultaneous three-way side core-pulling mechanism of injection mold sliding block

Abstract

A one-drag-three simultaneous three-way side core-pulling mechanism for a sliding block of an injection mold comprises an upper compound plate and a lower compound plate, a fixed mold plate is arranged below the upper compound plate, a through hole is formed in the lower compound plate, mold feet are arranged on the lower compound plate, an ejection assembly is arranged on the lower compound plate between the mold feet, a movable mold plate is arranged on the mold feet, a mold cavity is formed between the movable mold plate and the fixed mold plate, and a plastic part is arranged in the mold cavity. An upper inclined hole, a middle hole and a lower inclined hole are formed in one side of the plastic part, an upper inclined core-pulling hole, an upper inclined sliding groove, a middle side core-pulling hole, a lower inclined core-pulling hole, a lower inclined sliding groove and a side sliding groove are formed in the fixed mold plate, an upper inclined core-pulling rod is arranged in the upper inclined core-pulling hole, an upper inclined guide hole is formed in the upper inclined core-pulling rod, a lower inclined core-pulling rod is arranged in the lower inclined core-pulling hole, and a lower inclined guide hole is formed in the lower inclined core-pulling rod. A lower inclined guide hole is formed in the lower inclined core-pulling rod, a side sliding block is arranged in the side sliding groove, the side sliding block is driven by power, an upper inclined guide rod, a middle side core-pulling rod and a lower inclined guide rod are arranged in the side sliding block, the upper inclined guide rod is matched with the upper inclined guide hole, and the lower inclined guide rod is matched with the lower inclined guide hole.

Description

Technical Field

[0001] This invention relates to injection molds, and more particularly to a three-way simultaneous three-axis side core-pulling mechanism for injection mold sliders. Background Technology

[0002] When producing plastic parts using injection molds, if three holes are opened on one side of the plastic part, with the first hole tilted upwards, the second hole horizontal, and the third hole tilted downwards, and the tilt angles of the three holes are different, it is impossible to directly use a side core-pulling structure for side core pulling. The existing method usually involves setting three hydraulic cylinders on the side wall of the fixed mold plate, with the angles of the three hydraulic cylinders corresponding to the three holes. The piston rod of each hydraulic cylinder is connected to a side core-pulling rod. After the plastic part is injection molded, the three hydraulic cylinders drive the three core-pulling rods to pull out the three holes. The disadvantages of this structure are: the hydraulic cylinders are large, occupying a lot of space, which leads to an increase in the size of the mold, and the cost of the hydraulic cylinders is high, which increases the development cost of the mold. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an injection mold slider-driven three-way simultaneous three-axis side core pulling mechanism that is advantageous for core pulling of three holes at three different angles on the side of plastic parts, has a simple structure, and reduces mold development costs.

[0004] The technical solution of the injection mold slider three-way simultaneous three-directional side core-pulling mechanism of the present invention is as follows: It includes an upper plate and a lower plate. A fixed template is set under the upper plate. A through hole is formed in the lower plate. Mold feet are set on the lower plate. An ejector assembly is set on the lower plate between the mold feet. The ejector rod of the injection molding machine passes through the through hole and cooperates with the ejector assembly. A movable template is set on the mold feet. A mold cavity is formed between the movable template and the fixed template. A plastic part is injection molded in the mold cavity. A flange is set on one side of the plastic part. An upper inclined hole, a middle hole, and a lower inclined hole are formed in the flange. An upper inclined core-pulling hole, an upper inclined groove, a middle side core-pulling hole, a lower inclined core-pulling hole, a lower inclined groove, and a side groove are formed in the fixed template. The upper inclined core-pulling hole communicates with the upper inclined groove. An upper inclined core-pulling rod is set in the upper inclined core-pulling hole. One end of the upper inclined core-pulling rod is connected to the upper inclined hole. In conjunction with the above, an upward-sloping guide hole is formed in the upward-sloping core-pulling rod, and the downward-sloping core-pulling hole communicates with the downward-sloping sliding groove. A downward-sloping core-pulling rod is set in the downward-sloping core-pulling hole, and one end of the downward-sloping core-pulling rod mates with the downward-sloping hole. A downward-sloping guide hole is formed in the downward-sloping core-pulling rod, and a side slider is set in the side sliding groove. The side slider is driven by a power source and contains an upward-sloping guide rod, a middle side core-pulling rod, and a downward-sloping guide rod. The upward-sloping guide rod passes through the upward-sloping sliding groove and mates with the upward-sloping guide hole. The middle side core-pulling rod passes through the middle side core-pulling hole and mates with the middle hole. The downward-sloping guide rod passes through the downward-sloping sliding groove and mates with the downward-sloping guide hole. An upper plug is set at the end of the upward-sloping core-pulling hole away from the upward-sloping hole, and an upper spring is set between the upper plug and the upward-sloping core-pulling rod. A lower plug is set at the end of the downward-sloping core-pulling hole away from the downward-sloping hole, and a lower spring is set between the lower plug and the downward-sloping core-pulling rod.

[0005] Furthermore, the power source is a hydraulic cylinder, and the piston rod of the hydraulic cylinder is connected to a side slider.

[0006] Furthermore, the ejector assembly includes an upper ejector plate and a lower ejector plate, with ejector pins provided on the upper and lower ejector plates. The upper ends of the ejector pins pass through the movable template and cooperate with the plastic parts, while the ejector rod passes through the through hole and cooperates with the lower part of the lower ejector plate.

[0007] The beneficial effects of the three-way side core-pulling mechanism for injection mold sliders of the present invention are as follows: using a single hydraulic cylinder to drive the side slider, the side slider drives the upper inclined guide rod, the middle side core-pulling rod, and the lower inclined guide rod to move synchronously. The upper inclined guide rod drives the upper inclined core-pulling rod to pull out the upper inclined hole, the middle side core-pulling rod to pull out the central control, and the lower inclined guide rod drives the lower inclined core-pulling rod to pull out the lower inclined hole. This is beneficial for core-pulling from three holes at different angles on the side of the plastic part. Compared with the core-pulling structure using three hydraulic cylinders, it occupies less mold space, has a simpler structure, and reduces mold development costs. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the mold closing state structure of the injection mold slider three-way simultaneous three-way side core pulling mechanism of the present invention; Figure 2 This is a schematic diagram of the structure of the upper inclined core-pulling rod, the middle side core-pulling rod, and the lower inclined core-pulling rod in the outward core-pulling state; Figure 3 This is a schematic diagram of the mold opening state structure of the injection mold slider three-way simultaneous three-way side core pulling mechanism of the present invention; Figure 4 This is a structural diagram of a fixed template; Figure 5 This is a schematic diagram of the structure of the side slider, the upper inclined guide rod, the upper inclined core-pulling rod, the middle side core-pulling rod, the lower inclined guide rod, and the lower inclined core-pulling rod in their coordinated state.

[0009] In the diagram, 1. Upper cover plate; 2. Lower cover plate; 3. Fixed template; 5. Through hole; 6. Mold foot; 7. Ejector rod; 8. Moving template; 9. Plastic part; 10. Flanged edge; 11. Upper slanted hole; 12. Middle hole; 13. Lower slanted hole; 14. Upper slanted core-pulling hole; 15. Upper slanted slide groove; 16. Middle side core-pulling hole; 17. Lower slanted core-pulling hole; 18. Lower slanted slide groove; 19. Side slide groove; 20. Upper slanted core-pulling rod; 21. Upper slanted guide hole; 22. Middle side core-pulling rod; 23. Lower slanted core-pulling rod; 24. Lower slanted guide hole; 25. Side slider; 26. Upper slanted guide rod; 27. Lower slanted guide rod; 28. Upper plug; 29. ​​Upper spring; 30. Lower plug; 31. Lower spring; 32. Hydraulic cylinder; 33. Upper ejector plate; 34. Lower ejector plate; 35. Ejector pin. Detailed Implementation

[0010] To enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote elements with the same or similar functions throughout. However, it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the present invention. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present invention.

[0011] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "set," "equipped with," "installed," "connected," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral construction; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two mechanisms, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0012] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0013] To further illustrate the content, features, and effects of this invention, the invention will be described in detail below with reference to the accompanying drawings and examples, but this should not be construed as limiting the invention.

[0014] This invention relates to a three-way simultaneous three-axis side core-pulling mechanism for a slider in an injection mold, such as... Figure 1 — Figure 5As shown, the system includes an upper platen 1 and a lower platen 2. A fixed template 3 is provided under the upper platen 1. A through hole 5 is provided in the lower platen 2. Mold feet 6 are provided on the lower platen 2. An ejector assembly is provided on the lower platen 2 between the mold feet 6. The ejector rod 7 of the injection molding machine passes through the through hole 5 and cooperates with the ejector assembly. A movable template 8 is provided on the mold feet 6. A mold cavity is formed between the movable template 8 and the fixed template 3. A plastic part 9 is injection molded in the mold cavity. A flange 10 is provided on one side of the plastic part 9. The template 3 has an upward inclined hole 11, a middle hole 12, and a downward inclined hole 13. The template 3 also has an upward inclined core-pulling hole 14, an upward inclined sliding groove 15, a middle side core-pulling hole 16, a downward inclined core-pulling hole 17, a downward inclined sliding groove 18, and a side sliding groove 19. The upward inclined core-pulling hole 14 communicates with the upward inclined sliding groove 15. An upward inclined core-pulling rod 20 is installed in the upward inclined core-pulling hole 14, with one end of the rod 20 engaging with the upward inclined hole 11. An upward inclined guide hole 21 is provided in the upward inclined core-pulling rod 20. The inclined core-pulling hole 17 communicates with the downward inclined slide groove 18. A downward inclined core-pulling rod 23 is provided in the downward inclined core-pulling hole 17. One end of the downward inclined core-pulling rod 23 is engaged with the downward inclined hole 13. A downward inclined guide hole 24 is provided in the downward inclined core-pulling rod 23. A side slider 25 is provided in the side slide groove 19. The side slider 25 is driven by a power source. An upper inclined guide rod 26, a middle side core-pulling rod 22, and a downward inclined guide rod 27 are provided in the side slider 25. The upper inclined guide rod 26 passes through the upper inclined slide groove 15 and engages with the upper inclined guide hole 21. The middle core-pulling rod 22 passes through the middle core-pulling hole 16 and cooperates with the middle hole 12. The lower inclined guide rod 27 passes through the lower inclined sliding groove 18 and cooperates with the lower inclined guide hole 24. An upper plug 28 is provided at the end of the upper inclined core-pulling hole 14 away from the upper inclined hole 11. An upper spring 29 is provided between the upper plug 28 and the upper inclined core-pulling rod 20. A lower plug 30 is provided at the end of the lower inclined core-pulling hole 17 away from the lower inclined hole 13. A lower spring 31 is provided between the lower plug 30 and the lower inclined core-pulling rod 23.

[0015] Furthermore, the power source is a hydraulic cylinder 32, and the piston rod of the hydraulic cylinder 32 is connected to the side slider 25. The hydraulic cylinder 32 can directly drive the side slider 25 to slide along the side sliding groove 19. The piston rod of the hydraulic cylinder 32 can also be connected to the middle side core-pulling rod 22. The middle side core-pulling rod 22 is fixed to the side slider 25 by fasteners. The hydraulic cylinder 32 drives the side slider 25 to slide synchronously through the middle side core-pulling rod 22.

[0016] Furthermore, the ejection assembly includes an upper ejector plate 33 and a lower ejector plate 34. Ejector pins 35 are mounted on the upper and lower ejector plates 33 and 34. The upper ends of the ejector pins 35 pass through the moving template 8 and engage with the plastic part 9. The ejector rod 7 passes through the through hole 5 and engages with the lower part of the lower ejector plate 34. After the plastic part 9 completes side core pulling, the ejector rod 7 of the injection molding machine pushes the upper and lower ejector plates 33 and 34 upward. The upper and lower ejector plates 33 and 34 drive the ejector pins 35 upward, and the ejector pins 35 eject the plastic part 9 upward to demold. When the mold is closed, the ejector pins 35 can contact the lower end of the fixed template 3 to push the ejector pins 35 and the upper and lower ejector plates 33 and 34 back to their original positions.

[0017] This invention discloses a three-way, three-axis side core-pulling mechanism for injection mold sliders. After the plastic part is injection molded, the piston rod of the hydraulic cylinder 32 drives the side slider 25 to slide to the right along the side slide groove 19. The side slider 25 drives the upper inclined guide rod 26, the middle side core-pulling rod 22, and the lower inclined guide rod 27 to slide to the right together. The upper inclined guide rod 26 slides to the right along the upper inclined slide groove 15. At the same time, the upper inclined guide rod 26 cooperates with the upper inclined guide hole 21 of the upper inclined core-pulling rod 20, driving the upper inclined core-pulling rod 20 to slide obliquely to the upper right along the upper inclined core-pulling hole 14, so that one end of the upper inclined core-pulling rod 20 is pulled out. The other end of the inclined core-pulling rod 20 presses against the upper spring 29, and the middle core-pulling rod 22 moves horizontally to the right to pull out the middle hole 12. The lower inclined guide rod 27 slides to the right along the lower inclined slide groove 18. At the same time, the lower inclined guide rod 27 cooperates with the lower inclined guide hole 24 of the lower inclined core-pulling rod 23, driving the lower inclined core-pulling rod 23 to slide downward and to the right along the lower inclined core-pulling hole 17, so that one end of the lower inclined core-pulling rod 23 is pulled out of the lower inclined hole 13, and the other end of the lower inclined core-pulling rod 23 presses against the lower spring 31. When the core-pulling of the three holes is completed simultaneously, the injection molding machine drives the lower cover plate 2, mold foot 6, moving mold plate 8, and ejector assembly. The plastic part 9 and the molded part 8 move downwards together, causing the mold to open from the fixed mold plate 3 and the moving mold plate 8. Finally, the ejector rod 7 of the injection molding machine pushes the upper ejector plate 33 and the lower ejector plate 34 upwards. The upper and lower ejector plates 33 and 34 drive the ejector pins 35 through the moving mold plate 8 to eject the plastic part 9 upwards and demold it. When the mold closes, the piston rod of the hydraulic cylinder 32 drives the side slider 25 to slide to the left along the side slide groove 19. The side slider 25 drives the upper inclined guide rod 26, the middle side core pull rod 22 and the lower inclined guide rod 27 to slide to the left together. The upper inclined guide rod 26 drives the upper inclined core pull rod 20 to return to the left. Under the action of the restoring force, the upper spring 29 pushes the upper inclined core-pulling rod 20 to the left. The upper spring 29 can provide a certain pushing force to the upper inclined core-pulling rod 20, which is more conducive to the mold closing and reset of the upper inclined core-pulling rod 20. The lower inclined guide rod 27 drives the lower inclined core-pulling rod 23 to reset to the left. At the same time, under the action of the restoring force, the lower spring 31 pushes the lower inclined core-pulling rod 23 to the left. The lower spring 31 can provide a certain pushing force to the lower inclined core-pulling rod 23, which is more conducive to the mold closing and reset of the lower inclined core-pulling rod 23. The upper ejector plate 33, the lower ejector plate 34 and the ejector pin 35 reset downwards, the mold closes, and it is ready for the next injection.

[0018] Although the embodiments of this application disclose the above-described methods, the content is merely an implementation method adopted for ease of understanding. Any person skilled in the art should understand that any modifications and changes in the form and details of the implementation can be made without departing from the spirit and scope of the present invention. However, the scope of patent protection of the present invention shall still be determined by the scope defined in the appended claims.

Claims

1. A three-way side core-pulling mechanism for a sliding block of an injection mold, comprising an upper platen (1) and a lower platen (2), wherein a fixed template (3) is provided under the upper platen (1), a through hole (5) is provided in the lower platen (2), mold feet (6) are provided on the lower platen (2), and an ejector assembly is provided on the lower platen (2) between the mold feet (6), and an ejector rod (7) of an injection molding machine passes through the through hole (5) and cooperates with the ejector assembly; a movable template (8) is provided on the mold feet (6), and a mold cavity is formed between the movable template (8) and the fixed template (3), wherein a plastic part (9) is injection molded in the mold cavity, and a flange (10) is provided on one side of the plastic part (9), wherein an upper inclined hole (11), a middle hole (12) and a lower inclined hole (13) are provided in the flange (10), characterized in that: The fixed template (3) is provided with an upper inclined core-pulling hole (14), an upper inclined slide groove (15), a middle side core-pulling hole (16), a lower inclined core-pulling hole (17), a lower inclined slide groove (18), and a side slide groove (19). The upper inclined core-pulling hole (14) is connected to the upper inclined slide groove (15). An upper inclined core-pulling rod (20) is provided in the upper inclined core-pulling hole (14). One end of the upper inclined core-pulling rod (20) is engaged with the upper inclined hole (11). An upper inclined guide hole (21) is provided in the upper inclined core-pulling rod (20). The lower inclined core-pulling hole (17) is connected to the lower inclined slide groove (18). A lower inclined core-pulling rod (23) is provided in the lower inclined core-pulling hole (17). One end of the lower inclined core-pulling rod (23) is engaged with the lower inclined hole (13). A lower inclined guide hole (24) is provided in the lower inclined core-pulling rod (23). A side slider (25) is provided in the side slide groove (19). Driven by a power source, the slider (25) is equipped with an upper inclined guide rod (26), a middle side core-pulling rod (22), and a lower inclined guide rod (27). The upper inclined guide rod (26) passes through the upper inclined slide groove (15) and cooperates with the upper inclined guide hole (21). The middle side core-pulling rod (22) passes through the middle side core-pulling hole (16) and cooperates with the middle hole (12). The lower inclined guide rod (27) passes through the lower inclined slide groove (18) and cooperates with the lower inclined guide hole (24). An upper plug (28) is provided at the end of the upper inclined core-pulling hole (14) away from the upper inclined hole (11). An upper spring (29) is provided between the upper plug (28) and the upper inclined core-pulling rod (20). A lower plug (30) is provided at the end of the lower inclined core-pulling hole (17) away from the lower inclined hole (13). A lower spring (31) is provided between the lower plug (30) and the lower inclined core-pulling rod (23).

2. The injection mold slider three-way simultaneous three-directional side core pulling mechanism as described in claim 1, characterized in that: The power source is a hydraulic cylinder (32), and the piston rod of the hydraulic cylinder (32) is connected to the side slider (25).

3. The injection mold slider one-to-three simultaneous three-way side core pulling mechanism as described in claim 1, characterized in that: The ejector assembly includes an upper ejector plate (33) and a lower ejector plate (34). Ejector pins (35) are provided on the upper ejector plate (33) and the lower ejector plate (34). The upper head of the ejector pin (35) passes through the moving template (8) and cooperates with the plastic part (9). The ejector rod (7) passes through the through hole (5) and cooperates with the lower part of the lower ejector plate (34).

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