Core-pulling anti-retraction mechanism for automobile instrument panel injection mold

Abstract

The utility model provides an automobile instrument board injection mold core-pulling anti -retreating mechanism, including mould body, core -pulling cylinder, inner core -pulling strip and automobile instrument board shell, the mould cavity that automobile instrument board shell injection moulding is in, inner core -pulling strip and automobile instrument board shell's reverse buckle contact connection, still include inner core -pulling slide block seat, I -shaped guide head, two limit end strips and inner core -pulling slide block part, core -pulling cylinder installs in the bottom end of inner core -pulling slide block seat and core -pulling cylinder passes through output shaft and is connected with I -shaped guide head, the bottom of mould body is provided with inner core -pulling chamber, inner core -pulling slide block part is located in the inner chamber of inner core -pulling chamber and makes I -shaped guide head be located at the center place of inner core -pulling slide block part, both sides of I -shaped guide head are equipped with inclined plane guide part, and one end of two limit end strips is contacted with corresponding inclined plane guide part, the utility model locks up inner core -pulling slide block part and inner core -pulling strip, can effectively prevent the whole core -pulling mechanism to retreat.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and relates to a core-pulling anti-retraction mechanism for automotive dashboard injection molds. Background Technology

[0002] The automotive dashboard is a device that reflects the operating status of various vehicle systems. Automotive dashboards are typically manufactured using injection molding. During injection molding, molten metal at a high temperature is injected into a pre-designed mold cavity, which corresponds to the shape of the dashboard. After the molten metal has cooled and solidified sufficiently within the mold to form a product with a stable shape and size, the molded automotive dashboard can be easily removed from the mold cavity.

[0003] Because automotive dashboards have undercut sections, internal core-pulling structures are typically used during injection mold demolding. In existing technologies, due to the high injection pressure, there is a risk that the core puller may be pushed back by the plastic during the injection process. This can cause deformation of the undercut sections of the automotive dashboard, affecting quality. To address this, we have designed a core-pulling anti-retraction mechanism for automotive dashboard injection molds. Summary of the Invention

[0004] The purpose of this invention is to provide a core-pulling anti-retraction mechanism for automotive dashboard injection molds, in order to solve the problems mentioned in the background art.

[0005] The purpose of this utility model can be achieved through the following technical solution: a core-pulling anti-retraction mechanism for an automotive instrument panel injection mold, comprising a mold body, a core-pulling cylinder, an inner core-pulling strip, and an automotive instrument panel housing, wherein the automotive instrument panel housing is injection molded in the mold cavity, the inner core-pulling strip is in a snap-fit ​​contact connection with the automotive instrument panel housing, and further comprising an inner core-pulling slide seat, an I-beam guide head, two limiting end strips, and an inner core-pulling slide portion;

[0006] The core-pulling cylinder is installed at the bottom of the inner core-pulling slide block and is connected to the I-beam guide head through the output shaft. The bottom of the mold body has an inner core-pulling cavity. The inner core-pulling slide block is located in the inner cavity of the inner core-pulling cavity, so that the I-beam guide head is located at the center of the inner core-pulling slide block. Both sides of the I-beam guide head are provided with inclined guide parts. One end of the two limiting end strips contacts the corresponding inclined guide part. Both sides of the inner cavity of the inner core-pulling cavity are provided with limiting grooves, and the other end of the two limiting end strips is inserted into the corresponding limiting grooves.

[0007] In the aforementioned automotive dashboard injection mold core-pulling anti-retraction mechanism, a slider guide is installed at the center of the top of the inner core-pulling slide block. The top of the slider guide has a beveled connection, which connects to the end of the inner core-pulling strip. Contact limiting surfaces are provided on both sides of the slider guide, and a limiting cavity surface is formed on the upper part of the inner cavity of the inner core-pulling chamber. The limiting cavity surface contacts and connects with the two contact limiting surfaces. This design aims to achieve good contact and installation, ensuring a secure connection between each component and achieving good precision.

[0008] In the aforementioned core-pulling anti-retraction mechanism for automotive dashboard injection molds, the bottom end of the inner core-pulling cavity is bolted to the inner core-pulling slide block seat, and the upper part of the inner core-pulling slide block seat has a retraction section, which is connected to the inner core-pulling slide block. This design aims to achieve a good reset effect and reduce structural interference between components during core-pulling and demolding.

[0009] In the aforementioned core-pulling anti-retraction mechanism for automotive dashboard injection molds, end strip guide grooves are provided on both sides of the inner sliding block. The middle ends of the two limiting end strips are engaged inside the corresponding end strip guide grooves. The limiting end strips can move horizontally in a straight line inside the end strip guide grooves. The purpose of this design is to ensure good motion accuracy of the limiting end strips during horizontal linear movement inside the end strip guide grooves.

[0010] Compared with the prior art, the advantages of the core-pulling anti-retraction mechanism of the automotive instrument panel injection mold of this utility model are as follows: by setting an inner core-pulling slide seat, an I-beam guide head, two limiting end strips and an inner core-pulling slide part; the core-pulling cylinder is installed at the bottom of the inner core-pulling slide seat and the core-pulling cylinder is connected to the I-beam guide head through the output shaft; an inner core-pulling cavity is opened at the bottom of the mold body; the inner core-pulling slide part is located in the inner cavity of the inner core-pulling cavity and the I-beam guide head is located at the center of the inner core-pulling slide part; both sides of the I-beam guide head are provided with inclined guide parts so that one end of the corresponding limiting end strip contacts the corresponding inclined guide part, and the other end of the limiting end strip is inserted into the corresponding limiting groove, locking the inner core-pulling slide part and the inner core-pulling strip, which can effectively prevent the entire core-pulling mechanism from retraction. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the core-pulling and anti-retraction mechanism for automotive dashboard injection molds according to this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the I-beam guide head of the core-pulling and anti-retraction mechanism for automotive instrument panel injection molds and the automotive instrument panel housing.

[0013] Figure 3 This is a schematic diagram of the specific structure of the core-pulling and anti-retraction mechanism of the injection mold for automotive dashboards.

[0014] Figure 4 This is a three-dimensional structural diagram of the inner sliding block of the core-pulling and anti-retraction mechanism of the automotive instrument panel injection mold of this utility model.

[0015] Figure 5 This utility model relates to a core-pulling anti-retraction mechanism for automotive dashboard injection molds. Figure 2 A schematic diagram of the planar structure.

[0016] Figure 6 This is a schematic diagram of the planar structure of the core-pulling and anti-retraction mechanism of the automotive instrument panel injection mold combined with the inner sliding block.

[0017] Figure 7 This is a schematic diagram of the planar structure of the inner sliding block of the core-pulling and anti-retraction mechanism of the automotive instrument panel injection mold of this utility model.

[0018] In the diagram, 1. Mold body; 2. Core-pulling cylinder; 3. Inner core-pulling slide block seat; 4. I-beam guide head; 5. Limiting end bar; 6. Inner core-pulling slide section; 7. Inner core-pulling strip; 8. Automotive instrument panel housing; 9. Inner core-pulling cavity; 901. Limiting cavity surface; 902. Limiting groove; 10. Angled guide section; 11. Slide guide section; 12. Retraction area; 13. Angled connection section; 14. End bar guide groove; 15. Contact limiting surface. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model relates to a core-pulling anti-retraction mechanism for automotive instrument panel injection molds.

[0021] Example 1: Includes a mold body 1, a core-pulling cylinder 2, an inner core-pulling strip 7, and an automotive instrument panel housing 8. The automotive instrument panel housing 8 is injection molded in the mold cavity. The inner core-pulling strip 7 is in a snap-fit ​​connection with the automotive instrument panel housing 8. It also includes an inner core-pulling slide block 3, an I-beam guide head 4, two limiting end strips 5, and an inner core-pulling slide portion 6. The core-pulling cylinder 2 is installed at the bottom of the inner core-pulling slide block 3 and is connected to the I-beam guide head 4 through an output shaft. An inner core-pulling cavity 9 is opened at the bottom of the mold body 1. The inner core-pulling slide portion 6 is located in the inner cavity of the inner core-pulling cavity 9, so that the I-beam guide head 4 is located at the center of the inner core-pulling slide portion 6. An inclined guide portion 10 is provided on both sides of the I-beam guide head 4. One end of the two limiting end strips 5 contacts the corresponding inclined guide portion 10. Limiting grooves 902 are opened on both sides of the inner cavity of the inner core-pulling cavity 9. The other end of the two limiting end strips 5 is inserted into the corresponding limiting grooves 902.

[0022] When in use, the core-pulling cylinder 2 pushes the I-shaped guide head 4 upward. Since one end of the two limiting end strips 5 contacts the corresponding inclined guide part 10, the other end of the two limiting end strips 5 is stuck in the corresponding limiting groove 902, locking the inner core-pulling slide part 6 and the inner core-pulling strip 7, which can effectively prevent the entire core-pulling mechanism from retracting.

[0023] Furthermore, based on Embodiment 1, the repeated structures will not be described again. In order to ensure a good and reliable connection between the inner sliding block 6 and the inner core-pulling cavity 9, a sliding block guide 11 is installed at the middle of the top of the inner sliding block 6. The top of the sliding block guide 11 is provided with a beveled connecting part 13, which is connected to the end of the inner core-pulling strip 7. Contact limiting surfaces 15 are provided on both sides of the sliding block guide 11. A limiting cavity surface 901 is provided on the upper part of the inner cavity of the inner core-pulling cavity 9, and the limiting cavity surface 901 is in contact with the two contact limiting surfaces 15.

[0024] Example 2: Includes a mold body 1, a core-pulling cylinder 2, an inner core-pulling strip 7, and an automotive instrument panel housing 8. The automotive instrument panel housing 8 is injection molded in the mold cavity. The inner core-pulling strip 7 is in a snap-fit ​​connection with the automotive instrument panel housing 8. It also includes an inner core-pulling slide block 3, an I-beam guide head 4, two limiting end strips 5, and an inner core-pulling slide portion 6. The core-pulling cylinder 2 is installed at the bottom of the inner core-pulling slide block 3 and is connected to the I-beam guide head 4 through an output shaft. An inner core-pulling cavity 9 is opened at the bottom of the mold body 1. The inner core-pulling slide portion 6 is located in the inner cavity of the inner core-pulling cavity 9, so that the I-beam guide head 4 is located at the center of the inner core-pulling slide portion 6. Both sides of the I-beam guide head 4 are provided with inclined guide portions 10. One end of the two limiting end strips 5 contacts the corresponding inclined guide portion 10. Limiting grooves 902 are opened on both sides of the inner cavity of the inner core-pulling cavity 9. The other ends of the two limiting end strips 5 are inserted into the corresponding limiting grooves 902. The inner sliding block 6 has end bar guide slots 14 on both sides, and the middle ends of the two limiting end bars 5 are locked inside the corresponding end bar guide slots 14; the limiting end bars 5 can move in a straight line along the horizontal direction inside the end bar guide slots 14.

[0025] The end bar guide slot 14 can be an open or closed channel structure.

[0026] The end bar guide slot 14 is designed to ensure that the limiting end bar 5 has good motion accuracy.

[0027] Example 3: Includes a mold body 1, a core-pulling cylinder 2, an inner core-pulling strip 7, and an automotive instrument panel housing 8. The automotive instrument panel housing 8 is injection molded in the mold cavity. The inner core-pulling strip 7 is in a snap-fit ​​connection with the automotive instrument panel housing 8. It also includes an inner core-pulling slide block 3, an I-beam guide head 4, two limiting end strips 5, and an inner core-pulling slide portion 6. The core-pulling cylinder 2 is installed at the bottom of the inner core-pulling slide block 3 and is connected to the I-beam guide head 4 via an output shaft. An inner core-pulling cavity 9 is formed at the bottom of the mold body 1. The inner core-pulling slide portion 6 is located within the inner cavity of the inner core-pulling cavity 9, such that the I-beam guide head 4 is located at the center of the inner core-pulling slide portion 6. Both sides of the I-beam guide head 4 are... The inner core-pulling cavity 9 is provided with a sloping guide portion 10. One end of each of the two limiting end strips 5 contacts the corresponding sloping guide portion 10. Limiting grooves 902 are provided on both sides of the inner cavity of the inner core-pulling cavity 9, and the other ends of the two limiting end strips 5 are inserted into the corresponding limiting grooves 902. A slider guide portion 11 is installed at the middle of the top of the inner core-pulling slide portion 6. A sloping connecting portion 13 is provided at the top of the slider guide portion 11, and the sloping connecting portion 13 is connected to the end of the inner core-pulling strip 7. Contact limiting surfaces 15 are provided on both sides of the slider guide portion 11. A limiting cavity surface 901 is provided at the upper part of the inner cavity of the inner core-pulling cavity 9, and the limiting cavity surface 901 is in contact with the two contact limiting surfaces 15. The inner core-pulling slide seat 3 is connected to the bottom end of the inner core-pulling cavity 9 by bolts. A retraction section 12 is provided at the upper part of the inner core-pulling slide seat 3, and the retraction section 12 is connected to the inner core-pulling slide portion 6.

[0028] This solution has a good reset effect and reduces structural interference between parts during the core pulling and demolding process.

[0029] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A core-pulling anti-retraction mechanism for an automotive dashboard injection mold, comprising a mold body (1), a core-pulling cylinder (2), an inner core-pulling strip (7), and an automotive dashboard housing (8), wherein the automotive dashboard housing (8) is injection molded in the mold cavity, and the inner core-pulling strip (7) is in a snap-fit ​​contact connection with the automotive dashboard housing (8), characterized in that, It also includes an inner sliding block seat (3), an I-beam guide head (4), two limiting end strips (5) and an inner sliding block part (6); The core-pulling cylinder (2) is installed at the bottom of the inner core-pulling slide block (3) and the core-pulling cylinder (2) is connected to the I-shaped guide head (4) through the output shaft. The bottom of the mold body (1) is provided with an inner core-pulling cavity (9). The inner core-pulling slide part (6) is located in the inner cavity of the inner core-pulling cavity (9) and the I-shaped guide head (4) is located at the center of the inner core-pulling slide part (6). Both sides of the I-shaped guide head (4) are provided with inclined guide parts (10). One end of the two limiting end strips (5) is in contact with the corresponding inclined guide part (10). Both sides of the inner cavity of the inner core-pulling cavity (9) are provided with limiting grooves (902). The other end of the two limiting end strips (5) is inserted into the corresponding limiting grooves (902).

2. The core-pulling anti-retraction mechanism for automotive dashboard injection molds according to claim 1, characterized in that, A slider guide (11) is installed at the middle of the top of the inner slider part (6), and a beveled connecting part (13) is provided at the top of the slider guide part (11), which is connected to the end of the inner core strip (7).

3. The core-pulling anti-retraction mechanism for automotive dashboard injection molds according to claim 2, characterized in that, The slider guide (11) is provided with contact limiting surfaces (15) on both sides, and the inner core pulling cavity (9) has a limiting cavity surface (901) on the upper part of the inner cavity. The limiting cavity surface (901) is in contact with the two contact limiting surfaces (15).

4. The core-pulling anti-retraction mechanism for automotive dashboard injection molds according to claim 1, characterized in that, The bottom end of the inner core-pulling cavity (9) is bolted to the inner core-pulling slide block (3), and the upper part of the inner core-pulling slide block (3) is provided with a retraction section (12), which is connected to the inner core-pulling slide block (6).

5. The core-pulling anti-retraction mechanism for automotive dashboard injection molds according to claim 1, characterized in that, The inner sliding block (6) has end bar guide slots (14) on both sides, and the middle ends of the two limiting end bars (5) are locked inside the corresponding end bar guide slots (14).

6. The core-pulling anti-retraction mechanism for automotive dashboard injection molds according to claim 5, characterized in that, The limiting end bar (5) can move in a straight line along the horizontal direction inside the end bar guide groove (14).

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