An injection mold for inverted product

Abstract

The utility model relates to the field of injection mold, concretely relates to a reverse buckle product injection mold, including the first slider that cooperates with first reverse buckle and the second slider that cooperate with second reverse buckle, the fixed push column of second slider is equipped with, the first slider is equipped with the gap, push column is located in the inside of gap and can move in the gap, the inside wall of one side of gap is the sliding slope that can cooperate with push column sliding, when demolding, second slider moves obliquely, push column moves in the gap, until push column and sliding slope abut, then second slider continues to move obliquely, and push column pushes sliding slope and makes first slider move horizontally. The scheme has solved the problem that the product with two reverse buckle structures cannot demold at present.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, specifically to an injection mold for undercut products. Background Technology

[0002] Currently, automotive injection molded parts are equipped with snap-fit ​​structures. For example, automotive injection molded parts have snap-fit ​​mechanisms. When the automotive injection molded parts are assembled with the other parts, the snap-fit ​​mechanisms can act as interlocking mechanisms, thereby achieving the connection between the automotive injection molded parts and the other parts.

[0003] The mold has a slider for forming undercuts. When there is only one undercut, the slider moves during demolding, separating from the undercut without affecting demolding. However, when there are two undercuts, one located on the side of the snap-fit ​​and the other on the bottom, the undercut at the bottom obstructs the slider's movement, preventing it from moving and thus preventing proper demolding of the snap-fit ​​product with two undercuts. Utility Model Content

[0004] The present invention aims to provide an injection mold for undercut products to solve the current problem that products with two undercut structures cannot be demolded.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection mold for undercut products, comprising a first slider that cooperates with a first undercut and a second slider that cooperates with a second undercut; The second slider is fixedly provided with a push post, and the first slider is provided with a notch. The push post is located inside the notch and can move inside the notch. One side of the inner wall of the notch is a sliding inclined surface that can slide with the push post. During demolding, the second slider moves obliquely, and the push post moves in the notch until the push post abuts against the sliding ramp; then the second slider continues to move obliquely, and the push post pushes the sliding ramp, causing the first slider to move laterally.

[0006] The principle and advantages of this solution are as follows: During demolding, the second slider is first moved obliquely, and the oblique movement of the second slider separates it from the second undercut. At this time, the push post moves within the notch. The notch design ensures that the first slider will not affect the oblique movement of the second slider, thus ensuring that the second slider can move obliquely and separate from the second undercut. The second slider and the second undercut will not get stuck together.

[0007] As the second slider continues to move diagonally, the push post moves to the sliding slope and abuts against the sliding slope. Then, the second slider continues to move diagonally, and the push post slides relative to the sliding slope. The push post pushes the first slider to move laterally, thus achieving the separation of the first slider from the first buckle.

[0008] Therefore, this patented solution, by setting a first slider and a second slider, with the second slider first separating from the second undercut, and then the second slider driving the first slider to move, so that the first slider separates from the first undercut, thus achieving normal and smooth demolding of products with two undercut structures, without damaging the product during the demolding process.

[0009] Preferably, as an improvement, the first slider is provided with a receiving groove, the second slider is located in the receiving groove, the two side walls of the receiving groove are located on both sides of the second slider, and the notch is located on the side wall of the receiving groove.

[0010] Thus, the second slider passes through the receiving groove, and its bottom engages with the second undercut. The first slider does not obstruct or affect the engagement of the second slider's bottom with the second undercut. Notches are located on the two side walls of the receiving groove, and each side wall of the second slider is equipped with a pushing post. The two pushing posts are located in the two notches respectively, and simultaneously act on the sliding inclined surfaces of the two notches on the first slider, thereby pushing the first slider to move.

[0011] Preferably, as an improvement, it also includes a drive member for pulling the second slider to move obliquely. Thus, the second slider is pulled laterally by the drive member, thereby achieving lateral movement of the second slider.

[0012] Preferably, as an improvement, the driving component is a hydraulic cylinder.

[0013] Preferably, as an improvement, it also includes a limiting block, which has a guide surface for abutting against the second slider, and the first slider slides laterally with the guide surface when sliding laterally.

[0014] Thus, by abutting against the guide surface, the first slider is limited, and the limiting block provides a limiting and fixing function for the first slider. When the first slider moves laterally, it slides relative to the guide surface, which guides the lateral movement of the first slider, making the lateral movement of the first slider more stable. When the push post slides to the top of the sliding ramp, as the second slider continues to move diagonally, the push post drives the first slider to move diagonally as well. At this point, the first slider separates from the guide surface, the guide surface no longer limits the first slider, and the guide surface does not affect the diagonal movement of the first slider.

[0015] Preferably, as an improvement, the second slider is provided with a pressing part for pressing against the first slider.

[0016] During injection molding, the pressure part on the second slider presses on top of the first slider, thereby making the first slider and the second slider fit together tightly.

[0017] Preferably, as an improvement, the pressing part is provided with abutting surfaces. The abutting surfaces are used to abut against the vertical sides of the product, which is beneficial for the injection molding of the product.

[0018] Preferably, as an improvement, the notch opening faces downwards.

[0019] Preferably, as an improvement, there are two limiting blocks, with an injection molding space between them. This allows the two limiting blocks to guide the lateral movement of the first slider, resulting in better guidance and more stable lateral movement. Simultaneously, the injection molding space between the two limiting blocks ensures that the product, after injection molding, resides between them. Attached Figure Description

[0020] Figure 1 This is a 3D view of an injection mold for an undercut product (the second slider in the figure has not yet started to move).

[0021] Figure 2 This is a three-dimensional view of an injection mold for an undercut product (in the figure, the second slider moves obliquely upward, the pushing column abuts against the sliding inclined surface, and the second slider and the second undercut separate).

[0022] Figure 3 This is a three-dimensional view of an injection mold for an undercut product (in the figure, the second slider drives the first slider to move a distance to the right, and the first undercut separates from the first slider).

[0023] Figure 4 This is a 3D view of the inverted product.

[0024] Figure 5 This is a 3D view of the first slider.

[0025] Figure 6 This is a three-dimensional view of the second slider, the driving component, and the fixing plate.

[0026] Figure 7 This is a schematic diagram of the limit block. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: product 1, first slider 2, second slider 3, fixing plate 4, driving component 5, guide surface 6, second buckle 7, push column 8, sliding slope 9, vertical side 10, pressing part 11, forming slope 12, notch 13, receiving groove 14, limiting block 18, and first buckle 19.

[0028] The basic implementation examples are as follows: Figures 1-7 As shown: An injection mold for an undercut product includes a mold body, a fixed plate 4, a driving component 5, two limiting blocks 18, a first slider 2 that cooperates with a first undercut 19, and a second slider 3 that cooperates with a second undercut 7.

[0029] Both the first slider 2 and the second slider 3 are located within the mold body. A fixing plate 4 is fixed to the mold body, and a driving component 5, specifically a hydraulic cylinder, is fixed to the fixing plate 4. The driving component 5 is inclined, and its bottom end is connected to the second slider 3. By extending and retracting the driving component 5, the second slider 3 can be moved obliquely along the axial direction of the driving component 5. Pushing columns 8 are integrally fixed to the front and rear sides of the second slider 3. The pushing columns 8 are perpendicular to the sides of the second slider 3.

[0030] The first slider 2 is provided with, for example Figure 5 The shown features a U-shaped receiving groove 14 with its opening facing right. A second slider 3 is located within the receiving groove 14, with the front and rear side walls of the receiving groove 14 located on the front and rear sides of the second slider 3. The second slider 3 passes through the receiving groove 14. The notch 13 is located on the front and rear side walls of the receiving groove 14, with its opening facing downwards.

[0031] The second slider 3 is located in the receiving groove 14 of the first slider 2, the push post 8 is located in the notch 13 and can move within the notch 13, and the right inner wall of the notch 13 is a sliding inclined surface 9 that can slide with the push post 8.

[0032] The second slider 3 is provided with a pressing part 11 for pressing on the first slider 2. The pressing part 11 is provided with an abutting surface, which abuts against the vertical side surface 10 of the inverted product 1.

[0033] Combination Figure 7 As shown, in this embodiment, the limiting block 18 is fixed on the mold body. There are two limiting blocks 18, and the space between the two limiting blocks 18 is the injection space. Both limiting blocks 18 are provided with a horizontal guide surface 6. The first slider 2 and the second slider 3 are both located on the right side of the limiting block 18. The top of the left end of the first slider 2 can vertically abut against the guide surface 6, and at the same time slide horizontally relative to the guide surface 6.

[0034] The specific implementation process is as follows: (Combined with...) Figure 1 As shown, initially, the pressing part 11 of the second slider 3 presses above the first slider 2, and the pushing post 8 is located within the notch 13, without abutting against the sliding inclined surface 9. This is formed after injection molding. Figure 4 As shown in the product 1, the left end of the first slider 2 is located in the groove below the first undercut 19 of the product 1, and the left end of the first slider 2 abuts against the groove. The top surface of the left end of the first slider 2 abuts against the first undercut 19. Simultaneously, the left end of the first slider 2 is located below the guide surface 6, and the top surface of the left end of the first slider 2 abuts against the guide surface 6. The lower right forming slope 12 of the second slider 3 is located below the first slider 2, and the lower right forming slope 12 of the second slider 3 abuts against the second undercut 7 on the bottom of the product 1.

[0035] During demolding, the drive unit 5 is activated, and the drive rod of the drive unit 5 moves to the upper right. The drive rod pulls the second slider 3 to the upper right. At this time, the forming slope 12 on the lower right of the second slider 3 separates from the second undercut 7, and the molded surface 12 separates from the second undercut 7. Figure 2 As shown, before the pushing column 8 abuts against the sliding inclined surface 9, the first slider 2 is in a stationary state, and the left end of the first slider 2 is still against the product 1. At this time, because the guide surface 6 abuts against the left end of the first slider 2 and performs vertical limiting, the first slider 2 will not move vertically.

[0036] As the second slider 3 continues to move upward and to the right, the pushing column 8 moves onto the sliding ramp 9, where it abuts. Then, the second slider 3 continues to move upward and to the right, causing the pushing column 8 to slide relative to the sliding ramp 9. The pushing column 8 moves upward relative to the sliding ramp 9, pushing the first slider 2 to move laterally to the right. The left end of the first slider 2 moves laterally to the right relative to the guide surface 6 and the first inverted buckle 19, thus combining... Figure 3 As shown, this achieves the separation of the left end of the first slider 2 from the first buckle 19. In this embodiment, during the movement of the first slider 2 to the right, the end of the first slider 2 slides relative to the guide surface 6, and the guide surface 6 guides the movement of the first slider 2 to the right.

[0037] Then, as the second slider 3 continues to move upward and to the right, the pushing column 8 moves to the top of the sliding inclined surface 9. At this time, the left end of the first slider 2 separates from the guide surface 6 and the first undercut 19. The pushing column 8 drives the first slider 2 to move upward and to the right together, thereby separating the first slider 2, the second slider 3, and the product 1. Then, the product 1 is ejected from the mold by the ejector pin on the mold (ejection direction is...). Figure 1 (The product is ejected vertically downwards), thus achieving complete demolding of product 1.

[0038] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An injection mold for undercut products, characterized in that: Includes a first slider that engages with a first inverted buckle and a second slider that engages with a second inverted buckle; The second slider is fixedly provided with a push post, the first slider is provided with a notch, the push post is located inside the notch and can move inside the notch, and one side of the inner wall of the notch is a sliding inclined surface that can slide with the push post; During demolding, the second slider moves obliquely, and the push post moves in the notch until the push post abuts against the sliding ramp; then the second slider continues to move obliquely, and the push post pushes the sliding ramp, causing the first slider to move laterally.

2. The undercut product injection mold according to claim 1, characterized in that: The first slider is provided with a receiving groove, the second slider is located in the receiving groove, the two side walls of the receiving groove are located on both sides of the second slider, and the notch is located on the side wall of the receiving groove.

3. The undercut product injection mold according to claim 2, characterized in that: It also includes a drive unit for pulling the second slider to move diagonally.

4. The undercut product injection mold according to claim 3, characterized in that: The driving component is a hydraulic cylinder.

5. The undercut product injection mold according to claim 4, characterized in that: It also includes a limiting block, which has a guide surface for abutting against the second slider, and the first slider slides laterally with the guide surface when it slides laterally.

6. The undercut product injection mold according to claim 2, characterized in that: The second slider is provided with a pressing part for pressing on the first slider.

7. The undercut product injection mold according to claim 6, characterized in that: The pressing part is provided with abutting surfaces.

8. The undercut product injection mold according to claim 1, characterized in that: The notch faces downwards.

9. The injection mold for an undercut product according to claim 5, characterized in that: The number of limiting blocks is two, and the space between the two limiting blocks is the injection molding space.

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