Sliding block side core-pulling structure in sliding block of injection mold of medical equipment shell
The slider side core pulling structure in the injection mold for medical device shells addresses the issue of forced removal of inclined baffles by using inclined guide columns and locking modules, ensuring smooth demolding and improved yield rates.
Patent Information
- Application Number
- CN202411497850.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2024-12-27
AI Technical Summary
Existing injection mold technologies face issues with the forced removal of inclined baffles, leading to breakage or cracks, resulting in low yield rates when producing plastic products with inclined baffles and transverse baffles, which results in low production efficiency.
The implementation of a slider side core pulling structure inside the slider of the slider of the slider, which includes an upper composite plate and a lower composite plate, a fixed template, a movable template, and a mold foot, with an ejector rod, an ejector plate, and a mold cavity, incorporating inclined guide columns and locking modules to facilitate smooth demolding.
The structure ensures smooth demolding of plastic products by allowing the lower core pulling slider to move outward first, followed by the upper core pulling slider, preventing deformation and breakage, thus enhancing yield rates.
Smart Images
Figure CN119189218A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an injection mold, in particular to a slider side core pulling structure inside a slider of an injection mold for a medical device shell. Background Art
[0002] When using an injection mold to produce plastic products, if an inclined baffle and a transverse baffle are formed on the outer wall of the plastic product, and the inclined baffle is inclined toward one side of the transverse baffle, thereby interfering with the lateral core pulling action of the side core pulling slider, the existing technology usually reduces the inclination angle of the inclined baffle, and uses the elasticity of the plastic material to force the side core pulling slider to be pulled out laterally from the inclined angle below the inclined baffle by forced removal. However, the disadvantage of this structure is that forced removal can easily cause the inclined baffle to break or crack, and the yield rate of the plastic product is low. Summary of the invention
[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a medical device housing injection mold slider with a slider side core pulling structure to ensure that the manufactured plastic product can be demoulded smoothly.
[0004] The technical solution of the slider side core pulling structure inside the slider of the injection mold of the medical device shell of the present invention is: it includes an upper composite plate and a lower composite plate, a fixed template is arranged under the upper composite plate, a perforation is opened in the lower composite plate, a mold foot is arranged on the lower composite plate, an upper ejector plate, a lower ejector plate and an ejector are arranged on the lower composite plate between the mold feet, the ejector rod of the injection molding machine passes through the perforation and cooperates with the lower ejector plate, a movable template is arranged on the mold foot, a mold cavity is formed between the movable template and the fixed template, there is an injection molded medical device shell in the mold cavity, a downwardly inclined oblique baffle and a transverse baffle are arranged on the side wall of the medical device shell, an oblique guide column and a locking module are arranged under the fixed template, a lower side core pulling slider is arranged on the movable template, the inner side of the lower side core pulling slider cooperates with the transverse baffle, and a The lower inclined guide hole, the outer side of the lower core-pulling slider is provided with a side baffle, an inclined slide groove is provided on the lower core-pulling slider, an upper core-pulling slider is provided on the inclined slide groove, the bottom of the upper core-pulling slider cooperates with the inclined slide groove, the inner side of the upper core-pulling slider cooperates with the lower side of the inclined baffle, a first spring is provided between the outer side of the upper core-pulling slider and the side baffle, a delayed inclined guide hole is provided in the upper core-pulling slider, the inclined guide column cooperates with the delayed inclined guide hole and the lower inclined guide hole, the inner wall of the lock module has an inner inclined surface, and the outer wall of the side baffle has an outer inclined surface, the inner inclined surface of the lock module cooperates with the outer inclined surface of the side baffle, a groove is provided on the lower core-pulling slider, a second spring and a limiting steel ball are provided in the groove, a limiting groove is provided at the bottom of the upper core-pulling slider, and the limiting steel ball cooperates with the limiting groove.
[0005] Furthermore, a reset stopper is arranged under the fixed die plate, one side of the reset stopper matches with the upper part of the inclined baffle, and the other side of the reset stopper matches with the side wall of the upper core-pulling slider.
[0006] The beneficial effect of the slider side core pulling structure inside the slider of the injection mold for the medical device shell of the present invention is: the inclined guide column is used to cooperate with the lower inclined guide hole of the lower core pulling slider and the delayed inclined guide hole in the upper core pulling slider, and the upper core pulling slider is used to cooperate with the inclined slide groove of the lower core pulling slider. After the mold is opened, the lower core pulling slider moves outward first, and the upper core pulling slider does not move outward, but moves downward under the action of the first spring and the inclined slide groove to escape from under the inclined baffle. Finally, the upper core pulling slider and the lower core pulling slider pull the core outward together. The structure is simple, which ensures that the medical device shell can be demolded smoothly. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the mold closing state structure of the slider of the medical device housing injection mold of the present invention with a slider side core pulling structure; Figure 2 It is a structural schematic diagram of the upper side core pulling slider with a slider side core pulling structure inside the slider of the medical device housing injection mold of the present invention moving downward and out of the lower side of the inclined baffle; Figure 3 It is a schematic diagram of the structure of the medical device housing injection mold of the present invention in the mold opening state with a slider side core pulling structure inside the slider; Figure 4 yes Figure 3 A local enlarged schematic diagram of point A. DETAILED DESCRIPTION
[0008] The present invention relates to a medical device housing injection mold slider with a slider side core pulling structure inside, such as Figure 1 — Figure 4As shown, it includes an upper composite plate 1 and a lower composite plate 2, a fixed template 3 is arranged under the upper composite plate 1, a perforation 4 is opened in the lower composite plate 2, a mold foot 5 is arranged on the lower composite plate 2, an upper ejector plate 6, a lower ejector plate 7 and an ejector 8 are arranged on the lower composite plate 2 between the mold feet 5, and an ejector rod 9 of an injection molding machine passes through the perforation 4 and cooperates with the lower ejector plate 7, a movable template 10 is arranged on the mold foot 5, a mold cavity is formed between the movable template 10 and the fixed template 3, and an injection-molded medical device housing 11 is arranged in the mold cavity, and a downwardly inclined oblique baffle 12 and a transverse baffle 13 are arranged on the side wall of the medical device housing 11, an oblique guide column 14 and a locking module 15 are arranged under the fixed template 3, a lower core pulling slider 16 is arranged on the movable template 10, the inner side of the lower core pulling slider 16 cooperates with the transverse baffle 13, a lower oblique guide hole 17 is opened in the lower core pulling slider 16, and a side baffle 18 is arranged on the outer side of the lower core pulling slider 16. The side core-pulling slider 16 is provided with an inclined slot 19, and an upper core-pulling slider 20 is provided on the inclined slot 19. The bottom of the upper core-pulling slider 20 matches the inclined slot 19, and the inner side of the upper core-pulling slider 20 matches the lower side of the inclined baffle 12. A first spring 21 is provided between the outer side of the upper core-pulling slider 20 and the side baffle 18. A delayed inclined guide hole 22 is provided in the upper core-pulling slider 20, and the inclined guide column 14 is connected to the delayed inclined guide hole 22 and the lower inclined guide column 14. The inner wall of the lock module 15 has an inner bevel 30, and the outer wall of the side baffle 18 has an outer bevel 31. The inner bevel 30 of the lock module 15 matches with the outer bevel 31 of the side baffle 18. A groove 23 is provided on the lower core-pulling slider 16, and a second spring 24 and a limiting steel ball 25 are arranged in the groove 23. A limiting groove 26 is provided at the bottom of the upper core-pulling slider 20, and the limiting steel ball 25 matches with the limiting groove 26.
[0009] Further, a reset stopper 28 is provided under the fixed mold plate 3, one side of the reset stopper 28 cooperates with the upper part of the inclined baffle 12, and the other side of the reset stopper 28 cooperates with the side wall of the upper core-pulling slider 20. With the reset stopper 28, the upper core-pulling slider 20 plays a limiting role when the mold is reset.
[0010] The present invention discloses a slider with a side core-pulling structure inside a slider of an injection mold for a medical device housing. After the medical device housing 11 in the mold cavity is injection molded, the lower double plate 2 is driven by the injection molding machine to move downward, and the lower double plate 2 drives the mold foot 5, the upper ejector plate 6, the lower ejector plate 7, the ejector 8, the movable mold plate 10, the medical device housing 11, the lower side core-pulling slider 16, the side baffle 18, the upper side core-pulling slider 20, and the first spring 21 to move downward together, while the upper double plate 1, the fixed mold plate 3, the inclined guide column 14, and the locking module 15 remain stationary, so that the injection mold is gradually opened from the fixed mold plate 3 and the movable mold plate 10. At this time, the inclined guide column 14 and the lower side core-pulling slider 16 are first driven by the inclined guide column 14 and the lower side core-pulling slider 16. The lower inclined guide hole 17 cooperates with the lower core-pulling slider 16 to pull out the transverse baffle 13 of the medical device housing 11 outward, and the upper core-pulling slider 20 is provided with a delayed inclined guide hole 22, the delayed inclined guide hole 22 does not cooperate with the inclined guide column 14 first, and under the action of the first spring 21, the upper core-pulling slider 20 is pushed to move obliquely downward along the inclined slide groove 19, so that the upper core-pulling slider 20 is disengaged from the inclined baffle 12 downward. When the delayed inclined guide hole 22 of the upper core-pulling slider 20 contacts the inclined guide column 14, the mold continues to open, and the upper core-pulling slider 20 is driven by the inclined guide column 14 to move outward, and the upper core-pulling slider 20 drives the first spring 2 1. The side baffle plate 18 and the lower core-pulling slider 16 move outward together to complete the side core-pulling action. When the mold is fully opened, the second spring 24 pushes the limiting steel ball 25 to fit into the limiting groove 26, which limits the downward sliding of the upper core-pulling slider 20, preventing the upper core-pulling slider 20 from sliding too far downward and being unable to reset. Finally, the ejector rod 9 of the injection molding machine drives the upper and lower ejector plates 6, 7 and the ejector pin 8 to move upward together, and the ejector pin 8 ejects the medical device housing 11 that has completed the side core-pulling upward and demolds it. In the process of gradual mold closing, the oblique guide column 14 is first inserted into the delayed oblique guide hole 22 of the upper core-pulling slider 20, and then The inner bevel 30 of the locking module 15 cooperates with the outer bevel 31 of the side baffle 18, and the locking module 15 pushes the side baffle 18 to move inward, and the side baffle 18 drives the lower core-pulling slider 16 to move inward, so that the inclined guide column 14 can be smoothly inserted into the lower inclined guide hole 17 of the lower core-pulling slider 16, ensuring that the injection mold can be smoothly closed. After closing the mold, the locking module 15 cooperates with the side baffle 18 to lock the side baffle 18, the upper core-pulling slider 20 and the lower core-pulling slider 16, so as to avoid excessive injection pressure, which causes the rubber in the mold cavity to push the upper core-pulling slider 20 and the lower core-pulling slider 16 to move, resulting in deformation of the plastic product.In this scheme, the slider of the injection mold for the medical device housing is provided with a slider side core pulling structure, which utilizes the inclined guide column 14 to cooperate with the lower inclined guide hole 17 of the lower core pulling slider 16 and the delayed inclined guide hole 22 in the upper core pulling slider 20, and the upper core pulling slider 20 cooperates with the inclined slide groove 19 of the lower core pulling slider 16. After the mold is opened, the lower core pulling slider 16 moves outward first, and the upper core pulling slider 20 does not move outward, but moves downward under the action of the first spring 21 and the inclined slide groove 19 to escape from under the inclined baffle 12. Finally, the upper core pulling slider 20 and the lower core pulling slider 16 pull outward together. The structure is simple, which ensures that the medical device housing can be demolded smoothly.
Claims
1. A medical device housing injection mold has a slider side core pulling structure inside the slider, comprising an upper composite plate (1) and a lower composite plate (2), a fixed mold plate (3) is arranged under the upper composite plate (1), a through hole (4) is opened in the lower composite plate (2), a mold foot (5) is arranged on the lower composite plate (2), an upper ejector plate (6), a lower ejector plate (7) and an ejector (8) are arranged on the lower composite plate (2) between the mold feet (5), an ejector rod (9) of an injection molding machine passes through the through hole (4) and cooperates with the lower ejector plate (7), a movable mold plate (10) is arranged on the mold foot (5), a mold cavity is formed between the movable mold plate (10) and the fixed mold plate (3), a medical device housing (11) is molded in the mold cavity, and a downwardly inclined oblique baffle (12) and a horizontal baffle (13) are arranged on the side wall of the medical device housing (11), characterized in that: An inclined guide column (14) and a locking module (15) are arranged under the fixed template (3); a lower core-pulling slider (16) is arranged on the movable template (10); the inner side of the lower core-pulling slider (16) cooperates with the transverse baffle (13); a lower inclined guide hole (17) is provided in the lower core-pulling slider (16); a side baffle (18) is arranged on the outer side of the lower core-pulling slider (16); an inclined slide groove (19) is provided on the lower core-pulling slider (16); an upper core-pulling slider (20) is arranged on the inclined slide groove (19); the bottom of the upper core-pulling slider (20) cooperates with the inclined slide groove (19); the inner side of the upper core-pulling slider (20) cooperates with the lower side of the inclined baffle (12); the outer side of the upper core-pulling slider (20) cooperates with the side baffle (18) A first spring (21) is arranged between the upper core-pulling slider (20), a delayed inclined guide hole (22) is provided in the upper core-pulling slider (20), the inclined guide column (14) cooperates with the delayed inclined guide hole (22) and the lower inclined guide hole (17), the inner wall of the locking module (15) has an inner inclined surface (30), the outer wall of the side baffle (18) has an outer inclined surface (31), the inner inclined surface (30) of the locking module (15) cooperates with the outer inclined surface (31) of the side baffle (18), a groove (23) is provided on the lower core-pulling slider (16), a second spring (24) and a limiting steel ball (25) are arranged in the groove (23), a limiting groove (26) is provided at the bottom of the upper core-pulling slider (20), and the limiting steel ball (25) cooperates with the limiting groove (26).
2. The medical device housing injection mold slider as claimed in claim 1 has a slider side core pulling structure inside, characterized in that: A reset stopper (28) is provided under the fixed die plate (3), one side of the reset stopper (28) cooperates with the upper portion of the inclined baffle (12), and the other side of the reset stopper (28) cooperates with the side wall of the upper core-pulling slider (20).