Front mold core pop-up type injection mold for automobile decoration strip

Abstract

The utility model relates to a front mold core pop-up type injection mold for an automobile trim strip, which comprises a front mold assembly and a rear mold assembly, the front mold assembly comprises a front mold bottom plate, a front core-pulling plate, a front mold plate, a front mold core, a front core-pulling rod, an inclined guide post arranged on the front mold plate, and a core-pulling spring connected with the front side of the front mold core; the rear mold assembly comprises a rear mold bottom plate, a rear mold cushion block, a rear mold plate, a rear mold core, a wedge block, a side forming block, an ejector plate, an ejector body and an ejector spring, a side forming cavity is formed in the side, facing the main cavity, of the side forming block, the ejector body extends forwards to the rear wall of the main cavity, the inclined guide column extends from the front side of the center of the front mold core to the outer side of the rear end of the front mold core, and the wedge block is provided with an inclined guide hole. According to the utility model, the front mold core is elastically connected with the front mold plate, the front mold core and the rear mold core are not separated in the initial stage of mold opening, the front core-pulling rod finishes core pulling and prevents the buckle structure from being damaged, and meanwhile, the side forming block outwards retreats in the initial stage of mold opening to finish separation from the decoration strip, so that a joint line cannot be formed on the appearance surface of the decoration strip.

Description

Technical Field

[0001] The utility model relates to an injection mold, in particular to a front mold core pop-up injection mold for automobile decorative strips. Background Art

[0002] To achieve a more refined look, automotive decorative strips often feature complex shapes, often made of plastic. To maintain their aesthetic appeal, the strip's exterior surface typically avoids parting lines. Furthermore, to facilitate installation, clips are incorporated into the strip's mounting side. Thin clips with central holes are widely used on thin decorative strips. However, core pulling during conventional injection mold production can easily cause the clips to break, and parting lines are often unavoidable on the strip's exterior surface. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a front mold core pop-up injection mold for automobile decorative strips.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a front mold core pop-up injection mold for automobile decorative strips, comprising a front mold assembly and a rear mold assembly, the front mold assembly comprising a front mold base, a front core pulling plate arranged on the rear side of the front mold base, a front template arranged on the rear side of the front core pulling plate, a front mold core arranged on the rear side of the front template, a front core pulling rod arranged on the front core pulling plate and passing through the front template and the front mold core, an inclined guide column arranged on the front template, a core pulling spring connected to the front side of the front mold core, the core pulling spring applies a backward elastic force to the front mold core, the front mold core is connected to the front template for front and rear sliding connection, the rear mold assembly comprises a rear mold base, a rear mold pad arranged on the front side of the rear mold base, a rear template arranged on the front side of the rear mold pad, a A rear mold core on the front side of the rear template, a wedge block slidably connected to the rear templates on both sides of the rear mold core, a side forming block arranged on the side of the wedge block facing the rear mold core, an ejector plate sliding back and forth between the rear template and the rear mold bottom plate, an ejector body arranged on the ejector plate, and an ejector spring arranged on the rear template and the front side of the ejector plate, the ejector spring exerts a backward elastic force on the ejector plate, the rear mold core and the front mold core are assembled into a main cavity when the mold is closed, the side forming block is provided with a side forming cavity on the side facing the main cavity, the sliding direction of the wedge block is perpendicular to the mold closing direction, the ejector body extends forward to the rear wall of the main cavity, the inclined guide column extends from the front side of the center of the front mold core to the outer side of the rear end of the front mold core, and the wedge block is provided with an inclined guide hole matching the inclined guide column.

[0005] As a further improvement of the present design, the front mold core is provided with a mold closing inclined surface, and the wedge block is provided with a mold closing driving surface that fits with the mold closing inclined surface during mold closing.

[0006] As a further improvement of the present design, both the front mold core and the rear mold core are provided with avoidance grooves for avoiding the side forming blocks, and the side forming blocks fit in the avoidance grooves on the rear mold core.

[0007] As a further improvement of this design, the front side of the wedge block is provided with a longitudinal groove perpendicular to the sliding direction of the wedge block and a transverse groove parallel to the sliding direction of the wedge block. The side forming block is provided with a longitudinal limiting part inserted into the longitudinal groove and a transverse limiting part cooperating with the transverse groove. The combination of the transverse limiting part and the longitudinal limiting part is T-shaped when viewed from the front, and the side forming block is connected to the wedge block by bolts.

[0008] As a further improvement of the present design, a main guide column is provided on the rear template, and a main guide sleeve is provided on the rear template to cooperate with the main guide column when the mold is closed.

[0009] As a further improvement of the present design, the rear template is provided with a precision guide column, and the front template is provided with a precision guide sleeve that cooperates with the precision guide column when the mold is closed.

[0010] The beneficial effects of the present invention are as follows: the present invention elastically connects the front mold core and the front mold plate, the front mold core and the rear mold core are not separated in the initial stage of mold opening, the front core pulling rod completes the core pulling, and prevents damage to the snap structure. At the same time, the side forming blocks retreat outward in the initial stage of mold opening to complete separation from the decorative strip, and no joining line is formed on the appearance surface of the decorative strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0013] Figure 2 It is an overall cross-sectional schematic diagram of the present utility model.

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the front mold component of the present utility model.

[0015] Figure 4 It is a cross-sectional schematic diagram of the front mold assembly of the present utility model.

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the rear mold component of the present utility model.

[0017] Figure 6 It is a schematic diagram of the three-dimensional structure of a wedge block of the utility model in which some side forming blocks are arranged.

[0018] In the figure, 1. front mold assembly, 10. front mold base, 11. front core pulling plate, 12. front mold plate, 13. front core pulling rod, 14. front mold core, 15. avoidance groove, 16. inclined guide column, 17. mold closing inclined surface, 18. core pulling spring, 19. main guide sleeve, 1900. precision guide sleeve, 2. rear mold assembly, 20. rear mold base, 21. rear mold pad, 22. ejector plate, 23. ejector spring, 24. rear mold plate, 25. rear mold core, 26. side molding block, 260. transverse limiting part, 261. longitudinal limiting part, 262. side molding cavity, 27. inclined guide hole, 28. wedge block, 280. longitudinal groove, 281. transverse groove, 29. precision guide column, 2900. ejector body, 2901. main column, 2902. mold closing drive surface. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions are only used to explain the present invention but are not intended to limit the present invention. Example

[0020] See Figure 1 、 Figure 2 、 Figure 4This embodiment provides a front mold core 14 pop-up injection mold for automobile decorative strips, including a front mold assembly 1 and a rear mold assembly 2. The front mold assembly 1 includes a front mold base plate 10, a front core pulling plate 11 arranged on the rear side of the front mold base plate 10, a front mold plate 12 arranged on the rear side of the front core pulling plate 11, a front mold core 14 arranged on the rear side of the front mold plate 12, and a front core pulling rod 13 arranged on the front core pulling plate 11 and passing through the front mold plate 12 and the front mold core 14. , an inclined guide column 16 provided on the front template 12, a core-pulling spring 18 connected to the front side of the front mold core 14, the core-pulling spring 18 exerts a backward elastic force on the front mold core 14, the front mold core 14 is connected to the front template 12 for sliding forward and backward, the rear mold assembly 2 includes a rear mold base plate 20, a rear mold pad 21 provided on the front side of the rear mold base plate 20, a rear template 24 provided on the front side of the rear mold pad 21, and a rear mold provided on the front side of the rear template 24. The rear mold core 25, the wedge blocks 28 slidably connected to the rear templates 24 on both sides of the rear mold core 25, the side forming blocks 26 provided on the side of the wedge blocks 28 facing the rear mold core 25, the ejector plate 22 sliding back and forth between the rear template 24 and the rear mold bottom plate 20, the ejector body 2900 provided on the ejector plate 22, the ejector spring 23 provided on the front side of the rear template 24 and the ejector plate 22, the ejector spring 23 exerting a backward force on the ejector plate 22 Elastic force, the rear mold core 25 and the front mold core 14 are assembled into a main cavity when the mold is closed, the side molding block 26 is provided with a side molding cavity 262 toward the side of the main cavity, the sliding direction of the wedge block 28 is perpendicular to the mold closing direction, the ejector body 2900 extends forward to the rear wall of the main cavity, the inclined guide column 16 extends from the front side of the center of the front mold core 14 to the outside of the rear end of the front mold core 14, and the wedge block 28 is provided with an inclined guide hole 27 that cooperates with the inclined guide column 16.

[0021] The above-mentioned front mold core 14 is elastically connected to the front mold plate 12. In the initial stage of mold opening, the front mold core 14 and the rear mold core 25 are not separated. The front core pulling rod 13 completes the core pulling to prevent damage to the snap structure. At the same time, the side forming block 26 retreats outward in the initial stage of mold opening to complete separation from the decorative strip, and no joining line is formed on the appearance surface of the decorative strip.

[0022] See Figure 3 and Figure 5 The front mold core 14 is provided with a mold closing inclined surface 17, and the wedge block 28 is provided with a mold closing driving surface 2902 that fits with the mold closing inclined surface 17 during mold closing. It is convenient to push the wedge block 28 to limit the position during mold closing, thereby improving the mold closing accuracy of the side molding block 26.

[0023] See Figure 3The front mold core 14 and the rear mold core 25 are both provided with avoidance grooves 15 for avoiding the side forming blocks 26. The side forming blocks 26 are aligned with the avoidance grooves 15 on the rear mold core 25. This facilitates setting the side forming blocks 26 thicker to prevent deformation of the side forming blocks 26. At the same time, it facilitates guiding and limiting the side forming blocks 26, thereby improving the stability of the mold closing precision of the side forming blocks 26.

[0024] See Figure 6 The front side of the wedge block 28 is provided with a longitudinal groove 280 perpendicular to the sliding direction of the wedge block 28 and a transverse groove 281 parallel to the sliding direction of the wedge block 28. The side forming block 26 is provided with a longitudinal limiting portion 261 inserted into the longitudinal groove 280 and a transverse limiting portion 260 cooperating with the transverse groove 281. The combination of the transverse limiting portion 260 and the longitudinal limiting portion 261 is T-shaped when viewed from the front. The side forming block 26 is connected to the wedge block 28 by bolts. The longitudinal groove 280 and the transverse groove 281 facilitate the secure fixing of the side forming block 26 to the side forming block 26 with only one bolt, making disassembly and replacement convenient and reducing replacement and maintenance costs.

[0025] See Figure 3 and Figure 5 The rear template 24 is provided with a leading column 2901, and the rear template 24 is provided with a leading sleeve 19 that cooperates with the leading column 2901 when the mold is closed. It is convenient for the rear mold assembly 2 and the front mold assembly 1 to be initially guided when the mold is closed.

[0026] See Figure 3 and Figure 5 The rear template 24 is provided with a precision guide pin 29, and the front template 12 is provided with a precision guide sleeve 1900 that cooperates with the precision guide pin 29 when the mold is closed. This is convenient for improving the mold closing accuracy of the front mold core 14 and the rear mold core 25.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A front mold core pop-up injection mold for automobile decorative strips, comprising a front mold assembly and a rear mold assembly, characterized in that: The front mold assembly includes a front mold base, a front core-pulling plate arranged on the rear side of the front mold base, a front template arranged on the rear side of the front core-pulling plate, a front mold core arranged on the rear side of the front template, a front core-pulling rod arranged on the front core-pulling plate and passing through the front template and the front mold core, an inclined guide column arranged on the front template, a core-pulling spring connected to the front side of the front mold core, the core-pulling spring applies a backward elastic force to the front mold core, the front mold core is connected to the front template for front and rear sliding connection, the rear mold assembly includes a rear mold base, a rear mold pad arranged on the front side of the rear mold base, a rear template arranged on the front side of the rear mold pad, a rear mold core arranged on the front side of the rear template, and a rear template slidably connected to both sides of the rear mold core A wedge block, a side forming block provided on the wedge block toward the side of the rear mold core, an ejector plate sliding back and forth between the rear template and the rear mold bottom plate, an ejector body provided on the ejector plate, an ejector spring provided on the rear template and the front side of the ejector plate, the ejector spring exerts a backward elastic force on the ejector plate, the rear mold core and the front mold core are assembled into a main cavity when the mold is closed, the side forming block is provided with a side forming cavity toward the side of the main cavity, the sliding direction of the wedge block is perpendicular to the mold closing direction, the ejector body extends forward to the rear wall of the main cavity, the inclined guide column extends from the front side of the center of the front mold core to the outside of the rear end of the front mold core, and the wedge block is provided with an inclined guide hole matching the inclined guide column.

2. The front mold core pop-up injection mold for automobile decorative strips according to claim 1, characterized in that: The front mold core is provided with a mold closing inclined surface, and the wedge block is provided with a mold closing driving surface that is in contact with the mold closing inclined surface during mold closing.

3. The front mold core pop-up injection mold for automobile decorative strips according to claim 2, characterized in that: The front mold core and the rear mold core are both provided with avoidance grooves for avoiding the side forming blocks, and the side forming blocks are fitted with the avoidance grooves on the rear mold core.

4. The front mold core pop-up injection mold for automobile decorative strips according to claim 3, characterized in that: The front side of the wedge block is provided with a longitudinal groove perpendicular to the sliding direction of the wedge block and a transverse groove parallel to the sliding direction of the wedge block. The side forming block is provided with a longitudinal limiting part inserted into the longitudinal groove and a transverse limiting part cooperating with the transverse groove. The combination of the transverse limiting part and the longitudinal limiting part is T-shaped when viewed from the front. The side forming block is connected to the wedge block by bolts.

5. A front core pop-up injection mold for automobile decorative strips according to any one of claims 1 to 4, characterized in that: The rear template is provided with a main guide column, and the rear template is provided with a main guide sleeve that cooperates with the main guide column when the mold is closed.

6. The front mold core pop-up injection mold for automobile decorative strips according to claim 5, characterized in that: The rear template is provided with a precision guide column, and the front template is provided with a precision guide sleeve that cooperates with the precision guide column when the mold is closed.

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