A slider structure for insert injection molding

Abstract

The utility model discloses a slider structure of placing insert injection molding, including front mould, back mould, the slider of being able to in the back mould sliding, its characterized in that: the forming surface of slider is equipped with the locating insert that can cooperate with the positioning hole on metal spare, and be equipped with inclined jacking core-pulling structure between slider and front mould, thereby realize slider can drive locating insert to exit from product before product demoulding. The utility model discloses locating insert cooperation locating insert is positioned to metal spare through setting locating insert on slider, and locating insert not only can realize accurate positioning of metal spare, can avoid the rubber coating position of metal spare edge, and positioning structure is simple, and the small space in mould is occupied.

Description

Technical Field

[0001] This utility model relates to an injection mold, and more particularly to a slider structure for placing inserts during injection molding. Background Technology

[0002] In plastic products, some require the embedding of metal parts. Therefore, these metal parts need to be positioned before injection molding. However, positioning metal parts in the mold is quite difficult. Not only is the space in the mold limited, but most edges of the metal parts need to be covered with plastic, making it impossible to position them by contact in the covered areas. Therefore, the applicant has designed a slider structure for placing inserts during injection molding to solve the above problems. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a slider structure for placing inserts for injection molding.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A slider structure for placing inserts in injection molding includes a front mold, a rear mold, and a slider that can slide in the rear mold. The slider is characterized in that: the molding surface of the slider is provided with a positioning pin that can cooperate with a positioning hole on a metal part, and the slider and the front mold are provided with an inclined core-pulling structure, so that the slider can drive the positioning pin to exit from the product before the product is demolded.

[0006] The rear mold is provided with a rear forming insert, the rear forming groove of the rear forming insert is provided with a positioning insert, the positioning insert is provided with a positioning groove, the metal part can be embedded in the positioning groove, and the positioning pin is a cone shape.

[0007] The slider is provided with an anti-sticking structure to prevent the product from sticking to the slider. The anti-sticking structure includes a slider pin disposed in the slider and an elastic element that resets the slider pin. The front mold is provided with a front forming insert and a front mold groove. The front forming insert is located in the front mold groove. One end of the slider pin can abut against the groove wall of the front mold groove, while the other end of the slider pin forms a forming surface.

[0008] The slider has a sliding hole and a receiving hole that communicates with the sliding hole. The slider spring pin slides with the sliding hole and has a protrusion located in the receiving hole. The elastic element is located in the receiving hole, and one end of the elastic element abuts against the hole wall of the receiving hole and the other end abuts against the protrusion.

[0009] The slider is provided with a pressure plate, and the sliding hole passes through the pressure plate.

[0010] The inclined core-pulling structure includes a driving mechanism, a guide post hole on the slider, and an inclined guide post located in the guide post hole. The inclined guide post is fixed to the front mold. A retractable inclined guide structure is provided in the guide post hole. The inclined guide post can be inserted into the guide post hole after the slider moves and achieve the inclined lifting function through the retractable inclined guide structure. The driving mechanism is installed on the rear mold and connected to the slider.

[0011] The retractable inclined guide structure includes a telescopic block disposed opposite to the guide post hole, a mounting hole disposed opposite to the slider, and a reset member. The telescopic block divides the guide post hole into an inclined guide hole. The mounting hole communicates with the guide post hole. One end of the telescopic block and the reset member are both located in the mounting hole. The telescopic block is provided with a guide slope. The inclined guide post can squeeze the guide slope to move the telescopic block and insert it into the inclined guide hole.

[0012] Each telescopic block is provided with a first inclined guide surface, and each guide post hole is provided with a second inclined guide surface. The inclined guide hole is composed of the first inclined guide surface and the second inclined guide surface; the second inclined guide surface is an arc surface.

[0013] The inclined guide post is provided with a guide post guiding surface that can be pressed against the inclined guide surface one. Both the inclined guide surface one and the guide post guiding surface are inclined planes.

[0014] The mounting hole includes a first hole and a second hole that passes through the first hole. The telescopic block is slidably engaged with the first hole. The telescopic block is provided with a limiting end. The limiting end is located in the second hole and can abut against the stepped surface at the junction of the first and second holes. The reset member is located in the second hole, and one end of the reset member abuts against the bottom surface of the second hole while the other end of the reset member abuts against the limiting end.

[0015] The beneficial effects of this utility model are: This utility model positions the metal part by setting a positioning pin on the slider in conjunction with the positioning insert. The positioning pin can not only achieve accurate positioning of the metal part, but also avoid the rubber coating area on the edge of the metal part. Moreover, the positioning structure is simple and occupies little space in the mold. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an overall structural view of the present invention;

[0018] Figure 2 This is a structural view of the hidden front mold of this utility model;

[0019] Figure 3 This is a structural view of the concealed front mold and the front forming insert of this utility model;

[0020] Figure 4 This is an exploded view of the slider and inclined core-pulling structure;

[0021] Figure 5 This is a half-section view of the structure of this utility model cut along the inclined guide post;

[0022] Figure 6 This is a half-section view of the structure of this utility model cut along the slider spring pin;

[0023] Figure 7 This is a cross-sectional view of a contraction-type inclined guide structure. Detailed Implementation

[0024] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0025] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0026] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0027] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0028] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0029] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0030] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0031] Reference Figures 1 to 7 This utility model discloses a slider structure for placing an insert for injection molding, including a front mold 1, a rear mold 2, and a slider 3 that can slide in the rear mold 2. The molding surface of the slider 3 is provided with a positioning pin 5 that can cooperate with the positioning hole on the metal part 4. The positioning pin 5 is fixed inside the slider 3, and the slider 3 and the front mold 1 are provided with a slanted core-pulling structure, so that the slider 3 can drive the positioning pin 5 out of the product 29 before the product 29 is demolded. The above structure positions the metal part 4 by setting the positioning pin 5 on the slider 3 in conjunction with the positioning insert. The positioning pin 5 can not only achieve accurate positioning of the metal part 4, but also avoid the rubber coating area on the edge of the metal part 4. Of course, there should be at least two positioning pins 5. This application preferably has three pins arranged in a triangle. After the metal part 4 is positioned by the positioning pin 5, the mold 2 starts to close and inject.

[0032] As shown in the figure, when the slider 3 is in the forming position, the forming cavity space is small, and there is no operating space to position and engage the metal part 4 with the positioning pin 5. Therefore, this application designs the following structure to solve the above problems. The rear mold 2 is provided with a rear forming insert 6, the rear forming groove 9 of the rear forming insert 6 is provided with a positioning insert 7, the positioning insert 7 is provided with a positioning groove 8, the metal part 4 can be embedded in the positioning groove 8, and the positioning pin 5 is a cone. With the above structure, when the slider 3 is in the mold opening position, the metal part 4 can be placed in the positioning groove 8. Then, when the mold is closed, the slider 3 moves to the forming position through the inclined core pulling structure, so that the positioning pin 5 is inserted into the positioning hole to achieve positioning. Because the positioning groove 8 cannot completely determine the position of the metal part 4 during the initial positioning, the end 30 of the metal part 4 still needs to contact the groove wall of the rear forming groove 9 to achieve complete position determination. However, because the end 30 of the metal part 4 is the position that needs to be coated with glue, we design the positioning pin 5 as a cone. After the positioning pin 5 is inserted into the positioning hole, the position of the metal part 4 is corrected, so that the end 30 of the metal part 4 is separated from the groove wall of the rear forming groove 9 to form a glue position.

[0033] As shown in the figure, the slider 3 is provided with an anti-sticking structure to prevent the product 29 from sticking to the slider 3. The anti-sticking structure includes a slider spring pin 10 disposed in the slider 3 and an elastic element 11 for resetting the slider spring pin 10. The front mold 1 is provided with a front forming insert 12 and a front mold groove 31. The front forming insert 12 is located in the front mold groove 31. One end of the slider spring pin 10 can abut against the groove wall of the front mold groove 31, while the other end of the slider spring pin 10 forms a forming surface. Therefore, during core pulling, the slider spring pin 10 is restricted by the front forming groove and cannot move with the slider 3, thereby holding the product 29 and separating the product 29 from the forming surface of the slider 3 to prevent the product 29 from sticking to the slider 3.

[0034] Specifically, the slider 3 has a sliding hole and a receiving hole 13 communicating with the sliding hole. The slider spring pin 10 slides with the sliding hole and has a protrusion 14 located in the receiving hole 13. The elastic element 11 is located in the receiving hole 13, with one end of the elastic element 11 abutting against the hole wall of the receiving hole 13 and the other end abutting against the protrusion 14. The elastic element 11 is a spring. The above structure is a spring mounting structure. The spring ensures that after the slider 3 moves and the positioning pin 5 is completely disengaged from the positioning hole, the elastic force will push the slider spring pin 10 out of the product 29. As a preferred structure, the slider 3 has a pressure plate 15, and the sliding hole communicates with the pressure plate 15. The above structure facilitates manufacturing and assembly.

[0035] As shown in the figure, the inclined core-pulling structure includes a drive mechanism 32, a guide post hole 16 disposed on the slider 3, and an inclined guide post 17 located in the guide post hole 16. The drive mechanism 32 is a hydraulic cylinder, which is fixed to the rear mold 2 by a cylinder seat. The drive mechanism 32 is connected to the slider 3 to drive the slider 3 to move. Of course, the rear mold also has a guide groove that cooperates with the slider, but the sliding structure of the slider is existing technology and will not be described in detail. The inclined guide post 17 is fixed to the front mold 1 by screws. A retractable inclined guide structure is provided in the guide post hole 16. The inclined guide post 17 can be inserted into the guide post hole 16 after the slider 3 moves and retracted. The inclined guide structure realizes the inclined top function. The drive mechanism 32 is installed on the rear mold 2 and connected to the slider 3. Because the metal part 4 needs to be positioned first when the mold is closed, the drive mechanism 32 needs to drive the slider 3 to move to the forming position to position the metal part 4. Then the front mold 1 and the front forming insert 12 move together with the rear mold 2 and the rear forming insert 6. At this time, the guide post hole 16 is no longer in the position where the slider 3 is in the mold opening position. Therefore, in order to avoid interference between the inclined guide post 17 and the slider 3 when it is reset, we designed a shrinkable inclined guide structure. The cross-sectional profile of the guide post hole 16 is the shape of an elongated hole, and the inclined guide post 17 is a round rod.

[0036] Specifically, the retractable inclined guide structure includes a telescopic block 18 disposed opposite to the guide post hole 16, a mounting hole 19 disposed opposite to the slider 3, and a reset member 20. The telescopic block 18 divides the guide post hole 16 into an inclined guide hole 21. The mounting hole 19 is in communication with the guide post hole 16. One end of the telescopic block 18 and the reset member 20 are both located in the mounting hole 19. The telescopic block 18 is provided with a guide slope. The inclined guide post 17 can squeeze the guide slope to move the telescopic block 18 and insert it into the inclined guide hole 21, thus avoiding interference with the slider 3. The guide slope consists of a first guide slope 22 and a second guide slope 23 intersecting with the first guide slope 22, thereby ensuring that the inclined guide post 17 can smoothly push open the telescopic block 18 and insert into the inclined guide hole 21 during the descent process of mold closing. The telescopic block 18 is reset by the reset member 20, which is a spring.

[0037] As shown in the figure, the specific structure of the inclined guide hole 21 is that each of the telescopic blocks 18 is provided with an inclined guide surface 24, and the guide post hole 16 is provided with an inclined guide surface 25. The inclined guide hole 21 is composed of the inclined guide surface 24 and the inclined guide surface 25. The inclined guide surface 25 is an arc surface. Through the above structure, the inclined guide hole 21 can press and slide against the inclined guide post 17, thereby pushing the slider 3 to move and realize that the positioning pin 5 is dislodged from the positioning hole.

[0038] As a preferred structure, the inclined guide post 17 is provided with a guide post guide surface 26 that can be pressed against the inclined guide surface 24. Both the inclined guide surface 24 and the guide post guide surface 26 are inclined planes. The inclined planes ensure that the telescopic block 18 will not retract when the inclined guide post 17 and the inclined guide hole 21 are pressed against each other, thereby ensuring the normal progress of the core pulling process.

[0039] As shown in the figure, the mounting hole 19 includes a first hole and a second hole 27 that passes through the first hole. The telescopic block 18 is slidably engaged with the first hole. The telescopic block 18 is provided with a limiting end, which is a protruding ring 28 located at the edge of the end of the telescopic block 18. The limiting end is located in the second hole 27 and can abut against the stepped surface at the junction of the first hole and the second hole 27. The reset member 20 is located in the second hole 27, and one end of the reset member 20 abuts against the bottom surface of the second hole 27, while the other end of the reset member 20 abuts against the limiting end. The reset member 20 is also a spring. The above structure realizes the installation of the reset member 20 and the reset function.

[0040] The above provides a detailed description of a slider structure for placing injection-molded inserts according to embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A slide structure for insert placement molding comprising a front mold, a back mold, a slide capable of sliding in the back mold, characterized in that: The slider has a positioning pin on its molding surface that can cooperate with the positioning hole on the metal part, and the slider and the front mold have an inclined core pulling structure, so that the slider can drive the positioning pin to exit from the product before the product is demolded.

2. The insert-molded slider structure of claim 1, wherein: The rear mold is provided with a rear forming insert, the rear forming groove of the rear forming insert is provided with a positioning insert, the positioning insert is provided with a positioning groove, the metal part can be embedded in the positioning groove, and the positioning pin is a cone shape.

3. The insert-molded slider structure of claim 1, wherein: The slider is provided with an anti-sticking structure to prevent the product from sticking to the slider. The anti-sticking structure includes a slider pin disposed in the slider and an elastic element that resets the slider pin. The front mold is provided with a front forming insert and a front mold groove. The front forming insert is located in the front mold groove. One end of the slider pin can abut against the groove wall of the front mold groove, while the other end of the slider pin forms a forming surface.

4. The insert-molded slider structure of claim 3, wherein: The slider has a sliding hole and a receiving hole that communicates with the sliding hole. The slider spring pin slides with the sliding hole and has a protrusion located in the receiving hole. The elastic element is located in the receiving hole, and one end of the elastic element abuts against the hole wall of the receiving hole and the other end abuts against the protrusion.

5. The insert-molded slider structure of claim 4, wherein: The slider is provided with a pressure plate, and the sliding hole passes through the pressure plate.

6. The insert-molded slider structure of claim 1, wherein: The inclined core-pulling structure includes a driving mechanism, a guide post hole on the slider, and an inclined guide post located in the guide post hole. The inclined guide post is fixed to the front mold. A retractable inclined guide structure is provided in the guide post hole. The inclined guide post can be inserted into the guide post hole after the slider moves and achieve the inclined lifting function through the retractable inclined guide structure. The driving mechanism is installed on the rear mold and connected to the slider.

7. The insert-molded slider structure of claim 6, wherein: The retractable inclined guide structure includes a telescopic block disposed opposite to the guide post hole, a mounting hole disposed opposite to the slider, and a reset member. The telescopic block divides the guide post hole into an inclined guide hole. The mounting hole communicates with the guide post hole. One end of the telescopic block and the reset member are both located in the mounting hole. The telescopic block is provided with a guide slope. The inclined guide post can squeeze the guide slope to move the telescopic block and insert it into the inclined guide hole.

8. The insert-molded slider structure of claim 6, wherein: Each telescopic block is provided with a first inclined guide surface, and each guide post hole is provided with a second inclined guide surface. The inclined guide hole is composed of the first inclined guide surface and the second inclined guide surface; the second inclined guide surface is an arc surface.

9. The insert-molded slider structure of claim 8, wherein: The inclined guide post is provided with a guide post guiding surface that can be pressed against the inclined guide surface one. Both the inclined guide surface one and the guide post guiding surface are inclined planes.

10. The insert-molded slider structure of claim 7, wherein: The mounting hole includes a first hole and a second hole that passes through the first hole. The telescopic block is slidably engaged with the first hole. The telescopic block is provided with a limiting end. The limiting end is located in the second hole and can abut against the stepped surface at the junction of the first and second holes. The reset member is located in the second hole, and one end of the reset member abuts against the bottom surface of the second hole while the other end of the reset member abuts against the limiting end.

Images