Core-pulling and inclined-ejecting sequential demolding mechanism for injection mold of automobile back door back-off side plaque

Abstract

The utility model provides a core-pulling pitched roof sequential demolding mechanism of an injection mold for an automobile back door back-off side plaque, and belongs to the technical field of molds. The mold comprises an upper mold plate and a lower mold plate, two forming cavities are formed between the upper mold plate and the lower mold plate, and the upper mold plate and the lower mold plate are further provided with a core-pulling inclined top sequential demolding mechanism connected with the forming cavities. The forming cavity can form an automobile back door side decoration plate product during injection molding, an inverted buckle can be formed at the inverted buckle forming part during injection molding, and after the product is subjected to injection molding, the core-pulling inclined top sequential demolding mechanism can realize core pulling and then ejection of the inverted buckle position of the product, so that damage-free ejection of the inverted buckle position of the product is realized; the vertical inner pulling assembly can automatically pull a core during mold opening, and when a product is ejected out, the lower mold inclined ejection assembly can apply an inclined upward thrust to the inverted buckle position of the product to enable the inverted buckle to be separated from the lower mold plate, so that the inverted buckle position of the product is prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to a core-pulling inclined ejector sequential demolding mechanism for an injection mold of an automobile rear door reverse buckle side trim panel. Background Technique

[0002] Automobile rear door side trim panels are generally injection-molded through molds. When the automobile rear door side trim panel products are injection-molded, a reverse buckle structure will be formed on the side of the products. When the existing molds inject and form the products, the products are ejected by a direct ejection method, but in this way, the reverse buckle position is easily damaged during ejection.

[0003] For example, the Chinese patent discloses a mold for an upper trim panel of an automobile rear door with a slider dragging delay mechanism [Application No.: 202221376264.3], which includes an upper template and a lower template. A molding cavity is provided between the upper template and the lower template. The molding cavity is formed by combining an upper molding surface provided on the upper template and a lower molding surface provided on the lower template. Three core-pulling blocks horizontally inserted into the side of the molding cavity are provided on the lower template. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above problems and provide a core-pulling inclined ejector sequential demolding mechanism for an injection mold of an automobile rear door reverse buckle side trim panel.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A core-pulling inclined ejector sequential demolding mechanism for an injection mold of an automobile rear door reverse buckle side trim panel includes an upper template and a lower template. Two molding cavities are provided between the upper template and the lower template. A core-pulling inclined ejector sequential demolding mechanism connected to the molding cavities is also provided on the upper template and the lower template. The core-pulling inclined ejector sequential demolding mechanism includes a vertical inner core-pulling assembly provided between the two molding cavities and respectively connected to the inner sides of the two molding cavities, and two lower mold inclined ejector assemblies respectively corresponding to the two sides of the vertical inner core-pulling assembly. There is a reverse buckle molding part between the molding cavity and the vertical inner core-pulling assembly.

[0007] In the above core-pulling inclined ejector sequential demolding mechanism for an injection mold of an automobile rear door reverse buckle side trim panel, the vertical inner core-pulling assembly includes two inner core-pulling sliders respectively connected to the inner sides of the two molding cavities. The outer sides of the inner core-pulling sliders have outer molding surfaces forming the reverse buckle molding part. A horizontal limit structure is provided between the inner core-pulling sliders and the lower template. An inner core-pulling driving structure capable of driving the two inner core-pulling sliders to translate and approach each other is provided on the upper template.

[0008] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the inverted buckle side trim panel of the automobile rear door described above, the inner core-pulling driving structure includes a vertical core-pulling slider fixed on the upper template, and a first inclined guiding structure is provided between the inner core-pulling slider and the vertical core-pulling slider.

[0009] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the inverted buckle side trim panel of the automobile rear door described above, the first inclined guiding structure includes a plurality of first inclined guiding chutes recessed inwardly on the side of the inner core-pulling slider away from the outer molding surface. The side of the vertical core-pulling slider is inclined with first inclined guiding sliders inserted into the first inclined guiding chutes. The cross-sections of the first inclined guiding sliders and the first inclined guiding chutes are T-shaped, and when the first inclined guiding sliders move vertically upward, they can drive the inner core-pulling slider to move away from the molding cavity corresponding to the inner core-pulling slider.

[0010] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the inverted buckle side trim panel of the automobile rear door described above, the first inclined guiding sliders are detachably fixed on the vertical core-pulling slider by a plurality of screws.

[0011] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the inverted buckle side trim panel of the automobile rear door described above, the horizontal limiting structure includes a limiting slider horizontally arranged on the lower template. A limiting chute is provided at the bottom of the inner core-pulling slider. The limiting slider is inserted into the limiting chute, and the cross-sections of the limiting slider and the limiting chute are T-shaped.

[0012] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the inverted buckle side trim panel of the automobile rear door described above, the lower mold inclined-lift assembly includes a horizontal driving slider embedded at the bottom of the lower template. The inner end of the horizontal driving slider is connected with two inclined-lift blocks through a second inclined guiding structure. The top ends of the inclined-lift blocks are connected to the inner side of the inverted buckle molding part. A driver mounting seat is also fixedly connected to the lower template, and a translation driver is horizontally fixed on the driver mounting seat. The end of the output shaft of the translation driver is connected with the horizontal driving slider.

[0013] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the inverted buckle side trim panel of the automobile rear door described above, the second inclined guiding structure includes two second inclined guiding chutes recessed inwardly on the inclined surfaces at the inner end of the horizontal driving slider and corresponding to the two inclined-lift blocks respectively. The cross-section of the second inclined guiding chute is T-shaped. A T-shaped joint inserted into the second inclined guiding chute is integrally formed at the bottom end of the inclined-lift block. When the horizontal driving slider translates towards the center position of the lower template, it can drive the inclined-lift blocks to move obliquely upward.

[0014] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the inverted buckle side trim panel of the automobile rear door described above, an anti-retreat structure connected with the horizontal driving slider is further provided on the upper template.

[0015] In the core-pulling inclined-lift sequential demolding mechanism of the injection mold for the automotive rear door inverted buckle side trim panel described above, the anti-retreat structure includes a positioning block vertically arranged at the bottom of the upper template, and the bottom end of the positioning block penetrates through the lower template and is inserted into the positioning groove at the top of the horizontal driving slider.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows:

[0017] 1. The forming cavity can form the automotive rear door side trim panel product during injection molding. During injection molding, the inverted buckle can be formed at the position of the inverted buckle forming part. After the product is injection molded, the core-pulling inclined-lift sequential demolding mechanism can realize the core-pulling first and then ejection at the inverted buckle position of the product, so as to achieve damage-free ejection at the inverted buckle position of the product. The vertical internal core-pulling component can automatically perform core-pulling during mold opening. When the product is ejected, the lower mold inclined-lift component can apply an obliquely upward thrust to the inverted buckle position of the product to separate the inverted buckle from the lower template, thereby preventing damage to the inverted buckle position of the product.

[0018] 2. When the upper template moves vertically upward, it can drive the vertical core-pulling slider to move vertically upward. When the vertical core-pulling slider moves vertically upward, it can drive the first inclined guiding slider to move vertically upward. When the first inclined guiding slider moves vertically upward, it can cooperate with the first inclined guiding chute to drive the internal core-pulling slider to move away from the forming cavity corresponding to the internal core-pulling slider, so as to separate the outer forming surface from the inverted buckle position of the product, thereby reducing the pulling force received by the inverted buckle position during ejection.

[0019] 3. When the product is ejected, the translation driver can drive the horizontal driving slider to translate towards the center of the lower template. When the horizontal driving slider moves, it can drive two inclined-lift blocks to apply an obliquely upward thrust to the inner side of the inverted buckle position of the product through the second inclined guiding structure, so as to separate the inverted buckle position of the product from the lower template, thereby reducing the pulling force received by the inverted buckle position during ejection.

[0020] Other advantages, objectives and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the external structure schematic diagram of the present utility model;

[0022] Figure 2 is the structure schematic diagram of the lower template;

[0023] Figure 3 is the structure schematic diagram of the core-pulling inclined-lift sequential demolding mechanism;

[0024] Figure 4 is the partial structure schematic diagram of the vertical internal core-pulling component;

[0025] Figure 5It is a partial structural schematic diagram of the vertical internal core-pulling component in another direction.

[0026] In the figure, there are upper template 1, lower template 2, molding cavity 3, core-pulling inclined lifter sequential demolding mechanism 4, vertical internal core-pulling component 5, lower die inclined lifter component 6, undercut molding part 7, internal core-pulling slider 8, outer molding surface 9, vertical core-pulling slider 10, first inclined guiding chute 11, first inclined guiding slider 12, limit slider 13, limit chute 14, horizontal driving slider 15, inclined lifter block 16, translation driver 17, second inclined guiding chute 18, T-shaped joint 19, positioning block 20, and positioning groove 21. Specific implementation mode

[0027] As Figures 1 - 5 shown, a core-pulling inclined lifter sequential demolding mechanism for an injection mold of an automotive rear door undercut side trim panel includes an upper template 1 and a lower template 2. There are two molding cavities 3 arranged between the upper template 1 and the lower template 2. The upper template 1 and the lower template 2 are also provided with a core-pulling inclined lifter sequential demolding mechanism 4 connected to the molding cavity 3. The core-pulling inclined lifter sequential demolding mechanism 4 includes a vertical internal core-pulling component 5 arranged between the two molding cavities 3 and respectively connected to the inner sides of the two molding cavities 3, and two lower die inclined lifter components 6 respectively arranged corresponding to the two sides of the vertical internal core-pulling component 5. There is an undercut molding part 7 between the molding cavity 3 and the vertical internal core-pulling component 5.

[0028] In the present utility model, the molding cavity 3 can form an automotive rear door side trim panel product during injection molding. During injection molding, an undercut can be formed at the position of the undercut molding part 7. After the product is injection molded, the core-pulling inclined lifter sequential demolding mechanism 4 can realize core-pulling first and then ejection at the undercut position of the product, so as to realize damage-free ejection at the undercut position of the product. The vertical internal core-pulling component 5 can automatically perform core-pulling during mold opening. When the product is ejected, the lower die inclined lifter component 6 can apply an obliquely upward thrust to the undercut position of the product to separate the undercut from the lower template, thereby preventing damage to the undercut position of the product.

[0029] Specifically, the vertical internal core-pulling component 5 includes two internal core-pulling sliders 8 respectively connected to the inner sides of the two molding cavities 3. The outer sides of the internal core-pulling sliders 8 have an outer molding surface 9 that constitutes the undercut molding part 7. A horizontal limiting structure is arranged between the internal core-pulling sliders 8 and the lower template 2. The upper template 1 is provided with an internal core-pulling driving structure capable of driving the two internal core-pulling sliders 8 to translate and approach each other. During mold opening, when the upper template 1 moves vertically upward, it can drive the two internal core-pulling sliders 8 to translate and approach each other through the internal core-pulling driving structure, so that the outer molding surface on the internal core-pulling slider is separated from the undercut position of the product. The horizontal limiting structure can limit the internal core-pulling slider.

[0030] Specifically, the inner core-pulling drive structure includes a vertical core-pulling slider 10 fixed on the upper template 1. A first inclined guiding structure is provided between the inner slider 8 and the vertical core-pulling slider 10. The first inclined guiding structure includes a number of first inclined guiding chutes 11 recessed inwardly on the side of the inner slider 8 away from the outer forming surface 9. A first inclined guiding slider 12 is inclinedly provided on the side of the vertical core-pulling slider 10 and inserted into the first inclined guiding chute 11. The cross-sections of the first inclined guiding slider 12 and the first inclined guiding chute 11 are T-shaped. When the first inclined guiding slider 12 moves vertically upward, it can drive the inner slider 8 to move away from the forming cavity 3 corresponding to the inner slider 8. When the upper template 1 moves vertically upward, it can drive the vertical core-pulling slider 10 to move vertically upward. The vertical upward movement of the vertical core-pulling slider 10 can drive the first inclined guiding slider 12 to move vertically upward. When the first inclined guiding slider 12 moves vertically upward, it can cooperate with the first inclined guiding chute 11 to drive the inner slider 8 to move away from the forming cavity 3 corresponding to the inner slider 8, so as to enable the outer forming surface to be separated from the undercut position of the product, thereby reducing the pulling force on the undercut position during ejection.

[0031] Preferably, the first inclined guiding slider 12 is detachably fixed on the vertical core-pulling slider 10 by a number of screws.

[0032] Specifically, the horizontal limiting structure includes a limiting slider 13 horizontally arranged on the lower template 2. A limiting chute 14 is provided at the bottom of the inner slider 8. The limiting slider 13 is inserted into the limiting chute 14 and the cross-sections of the limiting slider 13 and the limiting chute 14 are T-shaped. The cooperation of the limiting slider 13 and the limiting chute 14 with T-shaped cross-sections can limit the inner slider.

[0033] Specifically, the lower die lifter assembly 6 includes a horizontal driving slider 15 embedded at the bottom of the lower template 2. Two lifter blocks 16 are connected to the inner end of the horizontal driving slider 15 through a second inclined guiding structure. The top ends of the lifter blocks 16 are connected to the inside of the undercut forming part 7. A driver mounting seat is also fixed on the lower template 2. A translation driver 17 is horizontally fixed on the driver mounting seat. The end of the output shaft of the translation driver 17 is connected to the horizontal driving slider 15. When the product is ejected, the translation driver 17 can drive the horizontal driving slider 15 to translate towards the center of the lower template. The movement of the horizontal driving slider 15 can drive the two lifter blocks 16 to apply an obliquely upward thrust to the inside of the undercut position of the product through the second inclined guiding structure, so as to separate the undercut position of the product from the lower template, thereby reducing the pulling force on the undercut position during ejection.

[0034] Those skilled in the art should understand that the translation driver can be an oil cylinder, a cylinder or a linear motor, etc.

[0035] Specifically, the second inclined guiding structure includes two second inclined guiding chutes 18 which are recessed inwardly and disposed on the inclined surfaces at the inner ends of the horizontal driving sliders 15 and correspond to the two inclined ejector blocks 16 respectively. The cross-section of the second inclined guiding chute 18 is T-shaped. An integrally formed T-shaped joint 19 which is inserted into the second inclined guiding chute 18 is provided at the bottom end of the inclined ejector block 16. When the horizontal driving slider 15 translates downward to the central position of the lower template 2, the inclined ejector block 16 can be driven to move obliquely upward. The translation of the horizontal driving slider 15 downward to the central position of the lower template can drive the inclined ejector block to move obliquely upward through the cooperation of the inclined second inclined guiding chute 18 and the T-shaped joint 19.

[0036] Preferably, an anti-retreat structure connected to the horizontal driving slider 15 is further provided on the upper template 1. The anti-retreat structure includes a positioning block 20 vertically disposed at the bottom of the upper template 1. The bottom end of the positioning block 20 penetrates through the lower template 2 and is inserted into a positioning groove 21 at the top of the horizontal driving slider 15. The positioning block 20 and the positioning groove 21 can lock the horizontal driving slider during injection molding to prevent the horizontal driving slider from retreating due to excessive cavity pressure during injection molding.

[0037] The working principle of the present utility model is as follows: The molding cavity 3 can form the automotive back door side trim product during injection molding. During injection molding, an undercut can be formed at the position of the undercut molding portion 7. After the product is injection molded, the core-pulling inclined ejector sequential demolding mechanism 4 can realize core-pulling first and then ejection at the undercut position of the product, so as to realize damage-free ejection at the undercut position of the product. The vertical internal core-pulling assembly 5 can automatically perform core-pulling during mold opening. When the product is ejected, the lower mold inclined ejector assembly 6 can apply an obliquely upward thrust to the undercut position of the product to separate the undercut from the lower template, thereby preventing damage to the undercut position of the product.

[0038] During mold opening, when the upper template 1 moves vertically upward, the two internal core-pulling sliders 8 can be driven by the internal core-pulling driving structure to translate and approach each other, so that the outer molding surfaces on the internal core-pulling sliders are separated from the undercut positions of the product. The horizontal limiting structure can limit the internal core-pulling sliders. When the upper template 1 moves vertically upward, the vertical core-pulling slider 10 can be driven to move vertically upward. When the vertical core-pulling slider 10 moves vertically upward, the first inclined guiding slider 12 can be driven to move vertically upward. When the first inclined guiding slider 12 moves vertically upward, it can drive the internal core-pulling slider 8 to move away from the side of the molding cavity 3 corresponding to the internal core-pulling slider 8 through the cooperation with the first inclined guiding chute 11, so as to separate the outer molding surface from the undercut position of the product, thereby reducing the pulling force received by the undercut position during ejection. The limiting slider 13 with a T-shaped cross-section and the limiting chute 14 can cooperate to limit the internal core-pulling slider.

[0039] When the product is ejected, the translation driver 17 can drive the horizontal drive slider 15 to translate downward to the center of the lower template. The movement of the horizontal drive slider 15 can drive the two lifters 16 to move obliquely upward through the second inclined guiding structure, applying an obliquely upward thrust to the inner side of the undercut position of the product, so that the undercut position of the product is separated from the lower template, reducing the pulling force on the undercut position during ejection. The horizontal drive slider 15 translating downward to the center of the lower template can drive the lifter to move obliquely upward through the inclined second inclined guiding chute 18 cooperating with the T-shaped joint 19. The positioning block 20 cooperating with the positioning groove 21 can lock the horizontal drive slider during injection molding to prevent the horizontal drive slider from retracting due to excessive cavity pressure during injection molding.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0041] Although terms such as upper template 1, lower template 2, molding cavity 3, core-pulling lifter sequential demolding mechanism 4, vertical inner core-pulling assembly 5, lower die lifter assembly 6, undercut forming portion 7, inner core-pulling slider 8, outer molding surface 9, vertical core-pulling slider 10, first inclined guiding chute 11, first inclined guiding slider 12, limit slider 13, limit chute 14, horizontal drive slider 15, lifter 16, translation driver 17, second inclined guiding chute 18, T-shaped joint 19, positioning block 20, positioning groove 21 are used more frequently herein, using these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A core-pulling inclined ejection sequential demoulding mechanism for an injection mold of an automobile back door undercut side trim panel, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: Two molding cavities (3) are arranged between the upper mold plate (1) and the lower mold plate (2); the upper mold plate (1) and the lower mold plate (2) are also provided with a core-pulling inclined top sequential demoulding mechanism (4) connected to the molding cavities (3); the core-pulling inclined top sequential demoulding mechanism (4) comprises a vertical inner pull-out component (5) arranged between the two molding cavities (3) and respectively connected to the inner sides of the two molding cavities (3); and two lower mold inclined top components (6) respectively arranged corresponding to the two sides of the vertical inner pull-out component (5); and an undercut molding portion (7) is provided between the molding cavity (3) and the vertical inner pull-out component (5).

2. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 1 is characterized in that: The vertical inner-drawing assembly (5) comprises two inner-drawing slide blocks (8) respectively connected to the inner sides of the two forming cavities (3); the upper outer side of the inner-drawing slide block (8) comprises an outer forming surface (9) constituting an undercut forming portion (7); a horizontal limiting structure is arranged between the inner-drawing slide block (8) and the lower template (2); and the upper template (1) is provided with an inner-drawing driving structure capable of driving the two inner-drawing slide blocks (8) to move together in translation.

3. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 2 is characterized in that: The inner pulling driving structure comprises a vertical core pulling slider (10) fixed on the upper template (1), and a first oblique guide structure is arranged between the inner pulling slider (8) and the vertical core pulling slider (10).

4. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 3 is characterized in that: The No. 1 oblique guide structure comprises a plurality of No. 1 oblique guide grooves (11) which are recessed inwardly and arranged on the side of the inner pull-out slider (8) away from the outer forming surface (9); the side of the vertical core-pulling slider (10) is obliquely provided with a No. 1 oblique guide slider (12) which is inserted into the No. 1 oblique guide groove (11); the cross-sections of the No. 1 oblique guide slider (12) and the No. 1 oblique guide groove (11) are T-shaped, and when the No. 1 oblique guide slider (12) moves vertically upward, it can drive the inner pull-out slider (8) to move to the side of the forming cavity (3) corresponding to the inner pull-out slider (8) away from the inner pull-out slider (8).

5. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 4 is characterized in that: The first oblique guide slider (12) is detachably fixed to the vertical core-pulling slider (10) by means of a plurality of screws.

6. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 2, characterized in that: The horizontal limiting structure comprises a limiting slider (13) horizontally arranged on the lower template (2), a limiting slide groove (14) is arranged at the bottom of the inner slide (8), the limiting slider (13) is inserted into the limiting slide groove (14), and the cross-sections of the limiting slider (13) and the limiting slide groove (14) are T-shaped.

7. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 2, characterized in that: The lower mold inclined ejector assembly (6) includes a horizontal driving slider (15) embedded in the bottom of the lower mold plate (2); the inner end of the horizontal driving slider (15) is connected to two inclined ejector blocks (16) via a second inclined guide structure; the top of the inclined ejector block (16) is connected to the inner side of the undercut molding portion (7); the lower mold plate (2) is also fixedly connected to a driver mounting seat, a translation driver (17) is horizontally fixed to the driver mounting seat, and the output shaft end of the translation driver (17) is connected to the horizontal driving slider (15).

8. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 7, characterized in that: The No. 2 inclined guide structure comprises two No. 2 inclined guide grooves (18) which are inwardly recessed and arranged on the inclined surface at the inner end of the horizontal driving slider (15) and respectively correspond to the two inclined top blocks (16). The cross section of the No. 2 inclined guide groove (18) is T-shaped. The bottom end of the inclined top block (16) is integrally formed with a T-shaped joint (19) which is inserted into the No. 2 inclined guide groove (18). When the horizontal driving slider (15) is translated toward the center position of the lower template (2), it can drive the inclined top block (16) to move obliquely upward.

9. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 7, characterized in that: The upper template (1) is also provided with an anti-retraction structure connected to the horizontal driving slider (15).

10. The core-pulling, inclined-top sequential demoulding mechanism for the injection mold of the undercut side trim of the automobile back door according to claim 9, characterized in that: The anti-retraction structure comprises a positioning block (20) vertically arranged at the bottom of the upper template (1), and the bottom end of the positioning block (20) passes through the lower template (2) and is inserted into the positioning groove (21) at the top of the horizontal driving slider (15).

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