A side core pulling mechanism

Abstract

The utility model discloses a kind of side core-pulling mechanisms, it is related to injection mould technical field, including first slider sliding on rear mould, inclined to horizontal direction and slidingly arranged in the first slider into son structure, and inclined to vertical direction and setting on the guide column of front mould, first slider has first reverse buckle forming part;Into son structure has second reverse buckle forming part, when second reverse buckle forming part protrudes first slider, with first reverse buckle forming part on the same side of first slider;Guide column is slidably arranged in the guide long hole of first slider and the push hole of second slider;When front mould and rear mould open, guide column is used to drive second slider and first slider to slide in succession, to make second reverse buckle forming part and first reverse buckle forming part draw core in succession.The utility model has reached the purpose of core-pulling of two product reverse buckles on the same side of product in different directions, realized the demoulding of two product reverse buckles on the same side of product in different directions, improved demoulding efficiency, reduced production cost.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a side core-pulling mechanism. Background Technology

[0002] In the design and manufacturing of injection molds, the molding of complex products often faces the challenge of demolding undercuts. Typically, designers create different core-pulling mechanisms for different undercuts to facilitate smooth demolding. However, these mechanisms are usually only suitable for undercuts in a single direction. For products with two undercuts on the same side but in different directions, conventional core-pulling mechanisms generally cannot demold both undercuts simultaneously, necessitating the design of more complex core-pulling systems. This reduces demolding efficiency and increases production costs. Utility Model Content

[0003] To address the aforementioned deficiencies in existing technologies, this utility model provides a simple side-pulling mechanism that achieves the purpose of pulling the cores out of two products with inverted fasteners on the same side but in different directions, thereby realizing the demolding of two products with inverted fasteners on the same side but in different directions, improving demolding efficiency, and reducing production costs.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A lateral core-pulling mechanism includes a first slider that slides horizontally on a rear mold, an insert structure inclined in the horizontal direction and slidably disposed within the first slider, and a guide post inclined in the vertical direction and disposed on a front mold. The first slider has a first undercut forming part for forming a first undercut of a product. The insert structure includes a second slider and an insert disposed on the second slider. The insert has a second undercut forming part for forming a second undercut of a product. When the second undercut forming part extends out of the first slider, it is located on the same side of the first slider as the first undercut forming part. The first slider has an inclined guide elongated hole penetrating the first slider, and the second slider has an inclined push hole penetrating the second slider. Both the guide elongated hole and the push hole are aligned with the inclination direction of the guide post. The guide post slidably passes through the guide elongated hole and the push hole. When the front mold and the rear mold open, the guide post drives the second slider and the first slider to slide sequentially, so that the second undercut forming part and the first undercut forming part are pulled out sequentially.

[0006] The first slider has a groove and an inlet hole. The inlet hole passes through the first slider and is located below the first undercut forming part. The groove is connected to the inlet hole. The second slider is slidably installed in the groove. One end of the inlet is fixed in the second slider, and the other end of the inlet is the second undercut forming part, which extends out from the inlet hole.

[0007] The insert structure further includes an elastic element located between the second slider and the first slider, and the elastic element is sleeved on the insert.

[0008] The first slider has an elastic element mounting hole that connects the slide groove and the inlet hole. The elastic element is located in the elastic element mounting hole, with one end of the elastic element abutting against the first slider and the other end abutting against the second slider.

[0009] The slide groove has guide limiting blocks on its two opposite side walls, and the second slider has guide limiting grooves on its two opposite side walls. The two guide limiting blocks and the two guide limiting grooves cooperate to guide and limit the sliding of the second slider.

[0010] The rear mold includes a rear template and a rear mold core disposed on the rear template; the front mold includes a front template and a front mold core disposed on the front template; the rear template and the front template together form an installation cavity; the first slider is slidably disposed on the rear template and located within the installation cavity; the first undercut forming part, the second undercut forming part, the front mold core and the rear mold core together form an injection molding cavity.

[0011] The rear template is provided with a slide rail, and the first slider is slidably mounted on the slide rail.

[0012] The rear template and the first slider are provided with an elastic self-resetting positioning structure for positioning the first slider.

[0013] The rear template is provided with a sliding limit structure for sliding and limiting the first slider.

[0014] The rear template is provided with a first wear-resistant plate at the position corresponding to the first slider, and the front template is provided with a second wear-resistant plate at the position corresponding to the second slider.

[0015] By adopting the above technical solution, the beneficial effects of this utility model are:

[0016] The side-pulling mechanism provided by this utility model allows the guide pillar to drive the second slider and the first slider to slide sequentially along their respective sliding directions when the front mold and the rear mold are opened. This enables the second undercut forming part and the first undercut forming part to be pulled out sequentially along their respective pulling directions, thereby achieving the sequential demolding of the second undercut and the first undercut of the product. Compared with the prior art, the side-pulling mechanism of this utility model achieves the purpose of side-pulling two undercuts on the same side of the product in different directions, realizing the demolding of two undercuts on the same side of the product in different directions, improving demolding efficiency and reducing production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the side core-pulling mechanism of this utility model;

[0018] Figure 2 yes Figure 1 A structural diagram of the other side;

[0019] Figure 3 yes Figure 1 Exploded view;

[0020] Figure 4 yes Figure 1 A sectional view;

[0021] Figure 5 This is a diagram showing the mold closing state of the front and rear molds;

[0022] Figure 6 yes Figure 5 Enlarged view of section A in the middle;

[0023] Figure 7 This is a diagram showing the first state of the front and rear molds after mold opening;

[0024] Figure 8 This is the second state diagram of the mold opening process between the front and rear molds;

[0025] Figure 9 yes Figure 8 Enlarged view of section B;

[0026] In the diagram: 1. First slider; 11. First undercut forming part; 12. Guide elongated hole; 13. Slide groove; 2. Guide post; 3. Second slider; 31. Push hole; 32. Screw plug hole; 33. Guide limiting groove; 4. Insert; 41. Second undercut forming part; 42. Rod part; 43. Head; 44. Anti-rotation notch; 5. Screw plug; 6. Elastic element; 7. Guide limiting block; 8. Rear template; 9. Rear mold core; 10. Front template; 15. Front mold core; 16. Slide rail; 17. Ball screw; 18. Limiting block; 19. First wear-resistant plate; 191. Clearance hole; 20. Second wear-resistant plate; 21. Product; 211. First undercut of product; 212. Second undercut of product. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0028] like Figures 1 to 9 As shown, a side-pulling core-pulling mechanism is disclosed for molding a first undercut 211 and a second undercut 212 of a product 21, and for pulling the first undercut 211 and the second undercut 212 to achieve demolding of the first undercut 211 and the second undercut 212. The first undercut 211 and the second undercut 212 are located on the same side of the product 21, and the demolding directions of the first undercut 211 and the second undercut 212 are not the same. The demolding direction of the first undercut 211 is horizontal, and the demolding direction of the second undercut 212 is inclined to the horizontal direction.

[0029] The lateral core-pulling mechanism includes a first slider 1 that slides horizontally on the rear mold, an insert structure that is inclined horizontally and slidably disposed within the first slider 1, and a guide post 2 that is inclined vertically and disposed on the front mold. The first slider 1 has a first undercut forming part 11 for forming a first undercut 211 of the product. The insert structure includes a second slider 3 and an insert 4 disposed on the second slider 3. The insert 4 has a second undercut forming part 41 for forming a second undercut 212 of the product. When the second undercut forming part 41 extends out of the first slider 1, it is connected to... The first undercut forming part 11 is located on the same side as the first slider 1; the first slider 1 is provided with an inclined guide elongated hole 12 that passes through the first slider 1, and the second slider 3 is provided with an inclined push hole 31 that passes through the second slider 3. The guide elongated hole 12 and the push hole 31 are both in the same inclination direction as the guide post 2. The guide post 2 slides through the guide elongated hole 12 and the push hole 31; when the front mold and the rear mold are opened, the guide post 2 is used to drive the second slider 3 and the first slider 1 to slide successively, so that the second undercut forming part 41 and the first undercut forming part 11 are pulled out one after the other.

[0030] When the front mold and the rear mold are opened, the guide post 2 of the side core pulling mechanism will drive the second slider 3 and the first slider 1 to slide in their respective sliding directions, so that the second undercut forming part 41 and the first undercut forming part 11 can pull the core in their respective core pulling directions, thereby realizing the demolding of the second undercut 212 and the first undercut 211 of the product.

[0031] In this embodiment, the first slider 1 is provided with a groove 13 and an inlet hole. The inlet hole passes through the first slider 1 and is located below the first undercut forming part 11. The groove 13 is connected to the inlet hole. The second slider 3 is slidably installed in the groove 13. One end of the inlet 4 is fixed in the second slider 3, and the other end of the inlet 4 is the second undercut forming part 41. The second undercut forming part 41 extends out from the inlet hole.

[0032] Specifically, the insert 4 has a cylindrical T-shaped structure, including a head 43, a rod 42, and a second undercut molding part 41 connected in sequence. The head 43 is provided with an anti-rotation notch 44. The second slider 3 is provided with a T-shaped hole adapted to the insert 4 and a screw plug hole 32 communicating with the T-shaped hole. The insert 4 is installed in the T-shaped hole and pressed into the T-shaped hole by a screw plug 5 threadedly connected to the screw plug hole 32. This design can prevent the insert 4 from rotating in the T-shaped hole and ensure the connection strength between the insert 4 and the second slider 3, thereby ensuring the injection molding quality of the product.

[0033] The insert structure in this embodiment also includes an elastic element 6, which is located between the second slider 3 and the first slider 1, and is sleeved on the insert 4. The elastic element 6 is used to assist the insert 4 in core pulling, and at the same time, the elastic element 6 can play a buffering role when the front mold and the rear mold are closed, so as to avoid damage to the first slider 1 and the second slider 3 due to collision.

[0034] Specifically, the first slider 1 has an elastic element mounting hole, which connects the slide groove 13 and the inlet hole. The elastic element 6 is located in the elastic element mounting hole, and one end of the elastic element 6 abuts against the first slider 1, while the other end abuts against the second slider 3.

[0035] Preferably, the elastic element 6 is a spring, but it can also be an elastic rubber body. The choice depends on the actual needs, and this embodiment does not limit this.

[0036] In this embodiment, two first undercut forming parts 11 are provided at intervals on the first slider 1. Correspondingly, the insert structure includes two inserts 4 and two elastic members 6. The two inserts 4 are provided at intervals on the second slider 3, and the two inserts 4 correspond one-to-one with the two first undercut forming parts 11. The two elastic members 6 are respectively sleeved on the corresponding inserts 4.

[0037] In this embodiment, guide limiting blocks 7 are respectively provided on the two opposite side walls of the slide groove 13, and guide limiting grooves 33 are respectively provided on the two opposite side walls of the second slider 3. The two guide limiting blocks 7 and the two guide limiting grooves 33 cooperate to guide and limit the sliding of the second slider 3. The cooperation between the guide limiting blocks 7 and the guide limiting grooves 33 not only ensures the linearity of the movement of the second slider 3, but also limits the sliding distance of the second slider 3, effectively reducing the stroke space of the second slider 3 and reducing the volume of the injection mold.

[0038] In this embodiment, the rear mold includes a rear template 8 and a rear mold core 9 disposed on the rear template 8, and the front mold includes a front template 10 and a front mold core 15 disposed on the front template 10. The rear template 8 and the front template 10 together form an installation cavity. The first slider 1 is slidably disposed on the rear template 8 and located in the installation cavity. The first undercut forming part 11, the second undercut forming part 41, the front mold core 15 and the rear mold core 9 together form an injection cavity for injection molding product 21.

[0039] To ensure the linearity of the sliding of the first slider 1, a slide rail 16 is provided on the rear template 8 in this embodiment, and the first slider 1 is slidably mounted on the slide rail 16.

[0040] Specifically, the mounting cavity includes a mounting groove on the rear template 8 and a receiving groove on the front template 10. Two slide rails 16 are provided, and the two slide rails 16 are provided on both sides of the mounting groove along the sliding direction of the first slider 1. The first slider 1 is slidably mounted on the two slide rails 16.

[0041] In this embodiment, an elastic self-resetting positioning structure is provided between the rear template 8 and the first slider 1 for positioning the first slider 1. By setting the elastic self-resetting positioning structure, the sliding distance of the first slider 1 can be accurately positioned, ensuring the accuracy of the core-pulling distance of the first undercut forming part 11.

[0042] Specifically, the elastic self-resetting positioning structure includes two ball screws 17 and two spherical positioning grooves that cooperate with the ball screws 17. The two ball screws 17 are located at the bottom of the mounting groove, and the two spherical positioning grooves are located at the bottom of the first slider 1.

[0043] In order to limit the sliding distance of the first slider 1 and prevent the first slider 1 from sliding out of the mounting groove, this embodiment provides a sliding limit structure on the rear template 8 for sliding limit of the first slider 1.

[0044] Specifically, the sliding limit structure is a limit block 18, which is set on the rear template 8 and located at the opening of the mounting groove.

[0045] In this embodiment, a first wear-resistant plate 19 is provided at the position of the rear template 8 corresponding to the position of the first slider 1, and a second wear-resistant plate 20 is provided at the position of the front template 10 corresponding to the position of the second slider 3. By providing the first wear-resistant plate 19 and the second wear-resistant plate 20, the service life of the lateral core-pulling mechanism is extended.

[0046] Specifically, the first wear-resistant plate 19 is provided at the bottom of the mounting groove, and the first wear-resistant plate 19 is provided with a clearance hole 191 for avoiding the ball screw 17. The two ball screws 17 pass through the corresponding clearance hole 191 and cooperate with the spherical positioning groove on the first slider 1. The second wear-resistant plate 20 is provided on the groove wall of the receiving groove corresponding to the second slider 3.

[0047] like Figure 7 As shown, when the front mold and the rear mold open, under the pushing action of the guide post 2, the elastic force of the elastic element 6, and the guiding action of the guide limiting block 7, the second slider 3 moves away from the product's second undercut 212. The second undercut forming part 41 of the insert 4 exits the product's second undercut 212 along the inclined direction of the product's second undercut 212, completing the core pulling of the second undercut forming part 41 and realizing the demolding of the product's second undercut 212. The guide limiting block 7 is also used to position the core pulling distance of the second undercut forming part 41. This core pulling distance is 2-3 mm larger than the depth of the product's second undercut 212. At this time, the guide post 2 and the inner wall of the guide elongated hole 12 are closely attached together.

[0048] like Figure 8 As shown, the front mold and the rear mold continue to open. Under the pushing action of the guide post 2 and the guiding action of the slide rail 16, the first slider 1 and the insert structure slide together in a direction away from the first undercut 211 of the product. The first undercut forming part 11 exits the first undercut 211 of the product, realizing the core pulling of the first undercut forming part 11 and completing the demolding of the first undercut 211 of the product. The limiting block 18 is used to limit the sliding distance of the first slider 1, and the ball screw 17 is used to position the core pulling distance of the first undercut forming part 11. This core pulling distance is 3-5mm larger than the depth of the first undercut 211 of the product.

[0049] The above describes in detail one embodiment of the side core-pulling mechanism of this utility model. There are many other embodiments, which will not be elaborated here.

[0050] In summary, the side-pulling core mechanism of this utility model achieves the purpose of pulling the core from two undercut products on the same side but in different directions, realizing the demolding of two undercut products on the same side but in different directions, improving demolding efficiency and reducing production costs.

[0051] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort shall fall within the protection scope of this utility model.

Claims

1. A lateral core-pulling mechanism, characterized in that, It includes a first slider that slides horizontally on the rear mold, an insert structure that is inclined in the horizontal direction and slidably disposed within the first slider, and a guide post that is inclined in the vertical direction and disposed on the front mold. The first slider has a first undercut forming part for forming a first undercut of the product; the insert structure includes a second slider and an insert disposed on the second slider, the insert having a second undercut forming part for forming a second undercut of the product, the second undercut forming part being located on the same side of the first slider when it extends out of the first slider; the first slider is provided with an obliquely extending guide hole, the second slider is provided with an obliquely extending push hole, the guide hole and the push hole are both aligned with the inclination direction of the guide post, and the guide post is slidably disposed in the guide hole and the push hole; When the front mold and the rear mold are opened, the guide post is used to drive the second slider and the first slider to slide in sequence, so that the second undercut forming part and the first undercut forming part are pulled out one after the other.

2. The lateral core-pulling mechanism according to claim 1, characterized in that, The first slider has a groove and an inlet hole. The inlet hole passes through the first slider and is located below the first undercut forming part. The groove is connected to the inlet hole. The second slider is slidably installed in the groove. One end of the inlet is fixed in the second slider, and the other end of the inlet is the second undercut forming part, which extends out from the inlet hole.

3. The lateral core-pulling mechanism according to claim 2, characterized in that, The insert structure also includes an elastic element, which is located between the second slider and the first slider, and is sleeved on the insert.

4. The lateral core-pulling mechanism according to claim 3, characterized in that, The first slider has an elastic element mounting hole, which connects the slide groove and the inlet hole. The elastic element is located in the elastic element mounting hole, and one end of the elastic element abuts against the first slider and the other end abuts against the second slider.

5. The lateral core-pulling mechanism according to claim 2, characterized in that, Guide limiting blocks are respectively provided on the two opposite side walls of the slide groove, and guide limiting grooves are respectively provided on the two opposite side walls of the second slider. The two guide limiting blocks and the two guide limiting grooves cooperate to guide and limit the sliding of the second slider.

6. The lateral core-pulling mechanism according to any one of claims 1 to 5, characterized in that, The rear mold includes a rear template and a rear mold core disposed on the rear template. The front mold includes a front template and a front mold core disposed on the front template. The rear template and the front template together form an installation cavity. The first slider is slidably disposed on the rear template and located in the installation cavity. The first undercut forming part, the second undercut forming part, the front mold core and the rear mold core together form an injection molding cavity.

7. The lateral core-pulling mechanism according to claim 6, characterized in that, The rear template is provided with a slide rail, and the first slider is slidably mounted on the slide rail.

8. The lateral core-pulling mechanism according to claim 6, characterized in that, An elastic self-resetting positioning structure for positioning the first slider is provided between the rear template and the first slider.

9. The lateral core-pulling mechanism according to claim 6, characterized in that, The rear template is provided with a sliding limit structure for sliding and limiting the first slider.

10. The lateral core-pulling mechanism according to claim 6, characterized in that, The rear template is provided with a first wear-resistant plate at the position corresponding to the first slider, and the front template is provided with a second wear-resistant plate at the position corresponding to the second slider.

Images