Injection mold demolding device

Abstract

The utility model discloses a demolding device for an injection mold, which is applied to the field of injection molds and comprises a bottom plate, a fixed column is bolted at the top of the bottom plate (1), a bottom mold is bolted at the top of the fixed column, and a top mold is arranged at the top of the bottom mold; by rotating the rotating head to separate the telescopic rod from the ejector rod, pressing the pressing block to move the double-sided toothed rod, moving the double-sided toothed rod to drive the rotating gear to enable the clamping toothed rod to move and be separated from the clamping groove, and taking down and replacing the ejector rod, the purpose of conveniently replacing the ejector rod can be achieved, the workload is reduced, and the replacement efficiency is improved; by rotating the rotating head, the rotating shaft drives the second bevel gear to rotate, the second bevel gear rotates to drive the first bevel gear to enable the screw to rotate, the screw rotates to drive the telescopic rod to move, and the telescopic rod moves to enable the demolding plate to move, the purpose of adjusting the length of the ejector rod can be achieved, the disengaging effect is guaranteed, and practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to an injection mold demolding device. Background Technology

[0002] A search of Chinese patents revealed publication number CN221819397U: a demolding device for injection molds, comprising a base plate, a base fixedly mounted on the lower end of the base plate, a rear plate fixedly mounted on the rear side of the base plate, and an electric telescopic rod fixedly mounted on the upper end of the rear plate. This demolding device uses the downward pressure of the electric telescopic rod, along with the cooperation of a pressure plate, an ejector pin, and an ejector block, to eject the plastic product from the mold. This method ensures the integrity of the plastic product and avoids any damage or deformation. Once the plastic product is ejected from the mold, the electric telescopic rod retracts via power control, preparing for the next demolding. Furthermore, the mold plate is fixed by a knob, a threaded rod, and a fixing plate, preventing mold displacement during demolding and facilitating easy clamping and loosening of the mold plate, making mold changes easier. This improves production efficiency, saves time and manpower, and increases the practicality of the device.

[0003] Existing demolding devices are inconvenient for replacing ejector pins. When an ejector pin is damaged, the entire template fixing the ejector pin needs to be removed before the damaged ejector pin can be disassembled and replaced. This is time-consuming and labor-intensive, increasing workload and reducing replacement efficiency. Furthermore, the length of the ejector pin cannot be adjusted. Generally, demolding devices use ejector pins for demolding, and the ejector pin's demolding stroke is fixed and cannot be changed after installation. However, in actual use, due to errors, ejector pins in some positions may not demold smoothly, resulting in a shorter ejector pin extension distance, reduced demolding effect, and inconvenience in normal demolding. To solve these problems, we propose a new injection mold demolding device. Utility Model Content

[0004] The purpose of this invention is to provide a demolding device for injection molds, which has the advantages of facilitating the replacement of ejector pins and allowing for adjustment of the ejector pin length.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a demolding device for injection molds, comprising a base plate, a fixed column bolted to the top of the base plate, a bottom mold bolted to the top of the fixed column, a top mold provided on the top of the bottom mold, a lifting mechanism provided between the fixed columns, a mounting base bolted to the top of the lifting mechanism, a top rod slidably sleeved on the inner wall of the mounting base, a double-sided toothed rod slidably sleeved on the inner wall of the mounting base, a rotating gear meshing on the surface of the double-sided toothed rod, and the rotating gear being rotatably connected to the inner wall of the mounting base, a snap-fit ​​toothed rod meshing on the surface of the rotating gear, a spring provided between the snap-fit ​​toothed rod and the inner wall of the mounting base, and a snap-fit ​​groove provided on the surface of the top rod, the snap-fit ​​groove being snap-fitted to one end of the snap-fit ​​toothed rod.

[0006] By adopting the above technical solution, the telescopic rod and the top rod are separated by rotating the rotating head, and the double-sided toothed rod is moved by pressing the pressing block. The movement of the double-sided toothed rod drives the rotating gear to move the locking toothed rod and disengage it from the locking groove, so that the top rod can be removed and replaced. This method can facilitate the replacement of the top rod, reduce the workload, and improve the replacement efficiency.

[0007] The present invention is further configured such that: a telescopic rod is slidably sleeved on the inner wall of the top rod, and the telescopic rod is slidably sleeved on the inner wall of the bottom mold; a release template is bolted to the top of the telescopic rod; a screw is threadedly connected to the inner wall of the telescopic rod, and the screw is rotatably connected to the inner wall of the top rod; a first bevel gear is fixedly sleeved on the surface of the screw; a second bevel gear meshes with the surface of the first bevel gear; a rotating shaft is fixedly sleeved at the axis of the second bevel gear, and the rotating shaft is rotatably sleeved on the inner wall of the top rod.

[0008] By adopting the above technical solution, the rotating head drives the rotating shaft to rotate the second bevel gear, the rotation of the second bevel gear drives the first bevel gear to rotate the screw, the rotation of the screw drives the telescopic rod to move, and the movement of the telescopic rod moves the ejector plate. This method can achieve the purpose of adjusting the length of the top rod, ensuring the ejection effect and improving practicality.

[0009] The present invention is further configured such that: the lifting mechanism includes a cylinder, the bottom of the cylinder is bolted to the top of the base plate, a lifting plate is bolted to the top of the cylinder, and the top of the lifting plate is bolted to the bottom of the mounting base.

[0010] By adopting the above technical solution and setting up a lifting mechanism, demolding is facilitated.

[0011] The present invention is further configured such that a pressing block is bolted to one end of the double-sided toothed rod.

[0012] By adopting the above technical solution, the double-sided toothed rod can be easily moved by setting up a pressing block.

[0013] The present invention is further configured such that: a fixing plate is rotatably sleeved on the surface of the screw, and the fixing plate is bolted to the inner wall of the top rod.

[0014] By adopting the above technical solution, the screw is fixed by setting a fixing plate, thereby improving stability.

[0015] The present invention is further configured such that a rotating head is bolted to one end of the rotating shaft.

[0016] By adopting the above technical solution, a rotating head is provided to facilitate the rotation of the shaft and make adjustment convenient.

[0017] The present invention is further configured such that a cooling fan is embedded in the surface of the lifting plate.

[0018] By adopting the above technical solution, cooling fans are installed to dissipate heat from the mold, thereby improving cooling efficiency.

[0019] The present invention is further configured such that: a slider is bolted to the surface of the lifting plate, and a groove is slidably connected to the surface of the slider, and the groove is formed on the surface of the fixed column.

[0020] By adopting the above technical solution, the lifting plate is prevented from shifting and stability is improved by setting sliders and grooves.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model separates the telescopic rod from the top rod by rotating the rotating head, and moves the double-sided toothed rod by pressing the pressing block. The movement of the double-sided toothed rod drives the rotating gear to move the locking toothed rod and disengage it from the locking groove, so that the top rod can be removed and replaced. This method can facilitate the replacement of the top rod, reduce the workload, and improve the replacement efficiency.

[0023] 2. This utility model achieves the purpose of adjusting the length of the top rod by rotating the rotating head to drive the rotating shaft to rotate the second bevel gear, which in turn drives the first bevel gear to rotate the screw, which in turn drives the telescopic rod to move, and the telescopic rod to move the ejector plate. This ensures the effective ejection and improves practicality. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0027] Figure 4 This is a utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0028] Reference numerals: 1. Base plate; 2. Fixed column; 3. Bottom mold; 4. Top mold; 5. Lifting mechanism; 6. Mounting base; 7. Top rod; 8. Double-sided gear; 9. Rotating gear; 10. Snap-fit ​​gear; 11. Spring; 12. Snap-fit ​​groove; 13. Telescopic rod; 14. Release plate; 15. Screw; 16. First bevel gear; 17. Second bevel gear; 18. Rotating shaft; 19. Cylinder; 20. Lifting plate; 21. Pressing block; 22. Fixed plate; 23. Rotating head; 24. Cooling fan; 25. Slider; 26. Slide groove. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Example 1:

[0031] refer to Figure 1 , Figure 2 and Figure 3 A demolding device for injection molds includes a base plate 1. The base plate 1 has a fixed post 2 bolted to its top, a bottom mold 3 bolted to the top of the fixed post 2, a top mold 4 disposed on the top of the bottom mold 3, a lifting mechanism 5 disposed between the fixed posts 2, a mounting base 6 bolted to the top of the lifting mechanism 5, a push rod 7 slidably sleeved on the inner wall of the mounting base 6, a double-sided toothed rod 8 slidably sleeved on the inner wall of the mounting base 6, a rotating gear 9 meshing with the surface of the double-sided toothed rod 8, and the rotating gear 9 rotatably connected to the inner wall of the mounting base 6, with a snap-fit ​​mechanism meshing with the surface of the rotating gear 9. A spring 11 is provided between the toothed rod 10 and the inner wall of the mounting base 6. The surface of the top rod 7 is provided with a snap-fit ​​groove 12, and the snap-fit ​​groove 12 is snapped with one end of the snap-fit ​​toothed rod 10. By rotating the rotating head 23, the telescopic rod 13 is separated from the top rod 7. Pressing the pressing block 21 moves the double-sided toothed rod 8. The movement of the double-sided toothed rod 8 drives the rotating gear 9 to move the snap-fit ​​toothed rod 10 and disengage it from the snap-fit ​​groove 12, so that the top rod 7 can be removed and replaced. This method can facilitate the replacement of the top rod 7, reduce the workload, and improve the replacement efficiency.

[0032] refer to Figure 1 and Figure 2 The lifting mechanism 5 includes a cylinder 19, the bottom of which is bolted to the top of the base plate 1, and a lifting plate 20 is bolted to the top of the cylinder 19. The top of the lifting plate 20 is bolted to the bottom of the mounting base 6. The lifting mechanism 5 facilitates demolding.

[0033] refer to Figure 1 and Figure 3 One end of the double-sided toothed rod 8 is bolted with a pressing block 21. By setting the pressing block 21, it is easy to move the double-sided toothed rod 8.

[0034] refer to Figure 2 A slider 25 is bolted to the surface of the lifting plate 20, and a groove 26 is slidably connected to the surface of the slider 25. The groove 26 is opened on the surface of the fixed column 2. By setting the slider 25 and the groove 26, the lifting plate 20 is prevented from shifting and the stability is improved.

[0035] Example 2:

[0036] refer to Figure 1 , Figure 2 and Figure 4 A telescopic rod 13 is slidably sleeved on the inner wall of the top rod 7, and the telescopic rod 13 is slidably sleeved on the inner wall of the bottom mold 3. A demolding template 14 is bolted to the top of the telescopic rod 13. A screw 15 is threadedly connected to the inner wall of the telescopic rod 13, and the screw 15 is rotatably connected to the inner wall of the top rod 7. A first bevel gear 16 is fixedly sleeved on the surface of the screw 15, and a second bevel gear 17 meshes with the surface of the first bevel gear 16. A rotating shaft 18 is fixedly sleeved at the axis of the second bevel gear 17, and the rotating shaft 18 is rotatably sleeved on the inner wall of the top rod 7. By rotating the rotating head 23, the rotating shaft 18 drives the second bevel gear 17 to rotate. The rotation of the second bevel gear 17 drives the first bevel gear 16 to rotate the screw 15. The rotation of the screw 15 drives the telescopic rod 13 to move. The movement of the telescopic rod 13 moves the demolding template 14. This method can achieve the purpose of adjusting the length of the top rod 7, ensuring the demolding effect and improving practicality.

[0037] refer to Figure 4 A fixing plate 22 is rotatably sleeved on the surface of the screw 15, and the fixing plate 22 is bolted to the inner wall of the top rod 7. By setting the fixing plate 22, the screw 15 is fixed, thereby improving stability.

[0038] refer to Figure 4 A rotating head 23 is bolted to one end of the rotating shaft 18. By setting the rotating head 23, it is easy to rotate the rotating shaft 18 and make it convenient to adjust.

[0039] refer to Figure 1 and Figure 2 The surface of the lifting plate 20 is embedded with a cooling fan 24. By setting the cooling fan 24, the mold is cooled and the cooling efficiency is improved.

[0040] Brief description of the usage process: Rotate the rotating head 23, which drives the rotating shaft 18 to rotate. The rotating shaft 18 drives the second bevel gear 17 to rotate, which in turn drives the first bevel gear 16 to rotate. The first bevel gear 16 drives the screw 15 to rotate, which in turn moves the telescopic rod 13. The movement of the telescopic rod 13 moves the ejector plate 14, thereby adjusting the length of the top rod 7. Rotate the rotating head 23 to move the telescopic rod 13 and disengage the screw 15 from the telescopic rod 13. Remove the telescopic rod 13 from the top rod 7, and then press the pressing block 21 to activate the double... The toothed rod 8 moves, and the movement of the double-sided toothed rod 8 drives the rotating gear 9 to rotate. The rotation of the rotating gear 9 causes the locking toothed rod 10 to disengage from the locking groove 12, and the ejector rod 7 is removed, completing the disassembly. During installation, one end of the ejector rod 7 is inserted into the mounting base 6. The locking toothed rod 10 is locked into the locking groove 12 under the action of the spring 11, and it is fixed. Then, the telescopic rod 13 is inserted into the ejector rod 7 from the mold cavity of the bottom mold 3. The rotating head 23 is rotated to make the screw 15 rotate. The rotation of the screw 15 causes the telescopic rod 13 to move down, and the ejector plate 14 is adjusted to the required position, thereby facilitating the replacement of the ejector rod 7.

[0041] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An injection mold demolding device comprising a base plate (1), characterized in that, A fixed column (2) is bolted to the top of the base plate (1), a bottom mold (3) is bolted to the top of the fixed column (2), a top mold (4) is provided on the top of the bottom mold (3), a lifting mechanism (5) is provided between the fixed columns (2), a mounting base (6) is bolted to the top of the lifting mechanism (5), a top rod (7) is slidably sleeved on the inner wall of the mounting base (6), a double-sided toothed rod (8) is slidably sleeved on the inner wall of the mounting base (6), a rotating gear (9) is meshed on the surface of the double-sided toothed rod (8), and the rotating gear (9) is rotatably connected to the inner wall of the mounting base (6), a snap-fit ​​toothed rod (10) is meshed on the surface of the rotating gear (9), a spring (11) is provided between the snap-fit ​​toothed rod (10) and the inner wall of the mounting base (6), a snap-fit ​​groove (12) is opened on the surface of the top rod (7), and the snap-fit ​​groove (12) is snap-fitted to one end of the snap-fit ​​toothed rod (10).

2. A mold release apparatus for injection molds as defined in claim 1, wherein The inner wall of the top rod (7) is slidably sleeved with a telescopic rod (13), and the telescopic rod (13) is slidably sleeved with the inner wall of the bottom mold (3). The top of the telescopic rod (13) is bolted with a stripping template (14). The inner wall of the telescopic rod (13) is threaded with a screw (15), and the screw (15) is rotatably connected to the inner wall of the top rod (7). The surface of the screw (15) is fixedly sleeved with a first bevel gear (16), and the surface of the first bevel gear (16) is meshed with a second bevel gear (17). The shaft of the second bevel gear (17) is fixedly sleeved with a rotating shaft (18), and the rotating shaft (18) is rotatably sleeved with the inner wall of the top rod (7).

3. The ejection apparatus of claim 1 wherein, The lifting mechanism (5) includes a cylinder (19), the bottom of which is bolted to the top of the base plate (1), and a lifting plate (20) is bolted to the top of the cylinder (19), and the top of the lifting plate (20) is bolted to the bottom of the mounting base (6).

4. The ejection apparatus of claim 1 wherein, A pressing block (21) is bolted to one end of the double-sided toothed rod (8).

5. The ejection apparatus of claim 2 wherein, The screw (15) is rotatably sleeved with a fixing plate (22), and the fixing plate (22) is bolted to the inner wall of the top rod (7).

6. The ejection apparatus of claim 2 wherein, A rotating head (23) is bolted to one end of the rotating shaft (18).

7. The ejection apparatus of claim 3 wherein, A cooling fan (24) is embedded in the surface of the lifting plate (20).

8. The injection mold release device of claim 3, wherein, The surface of the lifting plate (20) is bolted with a slider (25), and the surface of the slider (25) is slidably connected with a groove (26), and the groove (26) is opened on the surface of the fixed column (2).

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