Synchronous inclined core-pulling mechanism for large sliding block and small dovetail sliding block of automobile plastic part mold

Abstract

The utility model provides a synchronous inclined core-pulling mechanism for a large sliding block and a small dovetail sliding block of an automobile plastic part mold, and belongs to the technical field of molds. The die comprises a lower die plate, two lower forming faces forming a forming cavity are symmetrically arranged on the upper end face of the lower die plate, the lower forming faces are inclined faces, an annular crack sunken inwards is formed in each lower forming face, and a plurality of dovetail sliding block core-pulling assemblies arranged in the circumferential direction of the lower forming faces are arranged on the lower die plate. The multiple dovetail sliding block core-pulling assemblies can synchronously perform core pulling during mold opening, after mold opening, the sliding block oblique core-pulling assemblies can perform automatic core pulling, and the anti-retreating assembly can limit the sliding block oblique core-pulling assemblies during injection molding so as to prevent the sliding block oblique core-pulling assemblies from retreating during injection molding.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a synchronous oblique core-pulling mechanism for a large slider and a small dovetail slider in an automotive plastic part mold. Background Technology

[0002] The lower mold of automotive plastic parts mold is equipped with an inclined core-pulling assembly. The inclined slider in the inclined core-pulling assembly is inclinedly set in the lower mold and is generally driven by a hydraulic cylinder to pull the core. The top of the inclined slider is connected to the molding cavity. However, during injection molding, due to the large cavity pressure, the hydraulic cylinder may occasionally retract, resulting in quality problems in the injection molded product.

[0003] For example, a Chinese patent discloses an injection mold for automotive trim parts [application number: 202310181530.X], which includes an upper mold and a lower mold. The injection mold for automotive trim parts also includes several driving components, connecting components that correspond one-to-one with the several driving components, and insert plates that correspond one-to-one with the several driving components. The several driving components are circumferentially distributed and are all fixed to the bottom of the lower mold. One end of each connecting component is fixed to the driving end of the driving component at the corresponding position. Each insert plate is fixed to the other end of the connecting component at the corresponding position. Each driving component is used to drive the connecting component at the corresponding position to move so that the connecting component drives the insert plate at the corresponding position to be inserted into the gap between the upper mold and the lower mold or pulled out from the gap between the upper mold and the lower mold. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a synchronous oblique core-pulling mechanism for a large slider and a small dovetail slider in automotive plastic part molds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A synchronous oblique core-pulling mechanism for a large slider and a dovetail slider in an automotive plastic part mold includes a lower template. Two lower forming surfaces forming a forming cavity are symmetrically arranged on the upper surface of the lower template. Each lower forming surface is oblique and has an inwardly recessed annular slit. The lower template is provided with several dovetail slider core-pulling assemblies arranged circumferentially along the lower forming surfaces. Oblique core-pulling slider assemblies are also symmetrically arranged on both sides of the lower template. Anti-displacement assemblies are also provided on both sides of the lower template.

[0007] In the above-mentioned automotive plastic part mold large slider plus dovetail small slider synchronous oblique core pulling mechanism, the slider oblique core pulling assembly includes an oblique slider that is obliquely arranged in the lower template. The top of the oblique slider is connected to the lower molding surface. The side of the lower template is also provided with a core pulling slider that is horizontally inserted into the lower template and a drive cylinder connected to the core pulling slider. An oblique guide structure is provided between the core pulling slider and the oblique slider.

[0008] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the oblique guide structure includes an inclined track arranged obliquely at the inner end of the core-pulling slide block, the inner end of the oblique slide block is fixedly connected with a first slide guide column, the first slide guide column is provided with a first slide groove recessed inward, and the inclined track is clamped into the first slide groove.

[0009] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the outer end of the core-pulling slide block is in a cylindrical shape.

[0010] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the lower die plate is further provided with a positioning lock arranged correspondingly with the core-pulling slide block.

[0011] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the anti-retreat component includes a side baffle arranged at the side of the lower die plate, the bottom of the side baffle is abutted with the outer end of the core-pulling slide block, and the top of the side baffle is fixed on the upper die plate.

[0012] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the dovetail slide block core-pulling assembly includes a second slide guide column arranged in the lower die plate, the inner end of the second slide guide column is fixedly connected with a rectangular slide block inserted into the annular gap from the outside of the lower molding surface, and the dovetail slide block core-pulling assembly further includes a vertical core-pulling structure connected with the second slide guide column.

[0013] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the vertical core-pulling structure includes a vertical guide column, the bottom of the vertical guide column is provided with an obliquely arranged dovetail slide block, the second slide guide column is provided with a second slide groove recessed inward obliquely, the dovetail slide block is inserted into the second slide groove, and the vertical guide column is fixed on the upper die plate.

[0014] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the lower die plate is provided with a positioning plate corresponding to the second slide guide column, the middle part of the positioning plate is provided with a positioning slide groove, and the outer end of the second slide guide column is provided with a positioning slide block inserted into the positioning slide groove.

[0015] In the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism, the vertical guide column is fixed on the upper die plate through screws.

[0016] Compared with the prior art, the automobile plastic part mold big slide block plus dovetail small slide block synchronous oblique core-pulling mechanism has the advantages that:

[0017] 1. The dovetail sliding block core-pulling assembly can be synchronized to pull the core when the mold is opened, and the sliding block oblique core-pulling assembly can automatically pull the core after the mold is opened. The anti-back-off assembly can limit the sliding block oblique core-pulling assembly during injection molding to prevent the sliding block oblique core-pulling assembly from moving backward during injection molding.

[0018] 2. The core-pulling sliding block can be driven to move horizontally by the driving oil cylinder. The horizontal movement of the core-pulling sliding block can drive the core-pulling sliding block to move reciprocally in an inclined direction through the inclined guide structure. The horizontal movement of the core-pulling sliding block can drive the first sliding guide column to move in an inclined direction through the cooperation of the inclined track and the first sliding channel. The movement of the first sliding guide column can drive the oblique sliding block to move, thereby achieving automatic core pulling of the oblique sliding block after product injection molding.

[0019] 3. The side baffle can limit the outer end of the core-pulling sliding block to prevent the oil cylinder from moving backward. When the mold is opened, the upper mold plate moves upward to drive the side baffle to move upward, thereby allowing the side baffle and the core-pulling sliding block to disengage, so that the oblique sliding block can be driven to pull the core by the driving oil cylinder.

[0020] Other advantages, objects and features of the present application will be apparent from the following description, and will be understood by those skilled in the art upon reading and understanding the specification. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the lower mold plate;

[0022] Figure 2 is a partial structural schematic view of the lower mold plate;

[0023] Figure 3 is Figure 1 is an enlarged schematic view of position A in

[0024] Figure 4 is a structural schematic view of the sliding block oblique core-pulling assembly;

[0025] Figure 5 is a structural schematic view of the dovetail sliding block core-pulling assembly.

[0026] In the drawings, the lower mold plate 1, the lower molding surface 2, the annular gap 3, the dovetail sliding block core-pulling assembly 4, the sliding block oblique core-pulling assembly 5, the anti-back-off assembly 6, the oblique sliding block 7, the core-pulling sliding block 8, the driving oil cylinder 9, the inclined track 10, the first sliding guide column 11, the first sliding channel 12, the positioning lock 13, the side baffle 14, the second sliding guide column 15, the rectangular sliding block 16, the vertical guide column 17, the dovetail sliding block 18, the second sliding channel 19, the positioning plate 20, and the positioning sliding block 21. DETAILED DESCRIPTION

[0027] As Figures 1-5As shown, a kind of automobile plastic part mold big slide dovetail small slide block synchronous oblique core-pulling mechanism, including lower die plate 1, the upper end surface of the lower die plate 1 is symmetrically provided with two lower forming surfaces 2 of forming cavity, the lower forming surface 2 is inclined plane, the lower forming surface 2 is formed with the annular gap 3 recessed inward, the lower die plate 1 is provided with several dovetail slide block core-pulling assembly 4 being arranged along the circumferential direction of lower forming surface 2, the lower die plate 1 both sides are also symmetrically provided with slide block oblique core-pulling assembly 5, the lower die plate 1 both sides are also provided with anti-retreat component 6.

[0028] In the utility model, the dovetail slide block core-pulling assembly 4 can be synchronously core-pulled when opening mold, after opening mold, the slide block oblique core-pulling assembly 5 can be automatically core-pulled, and the anti-retreat component can limit the slide block oblique core-pulling assembly 5 to prevent the problem of retreat of the slide block oblique core-pulling assembly 5 during injection molding.

[0029] Specifically, the slide block oblique core-pulling assembly 5 includes the oblique slide block 7 obliquely arranged in the lower die plate 1, the top end of the oblique slide block 7 is connected with the lower forming surface 2, the side portion of the lower die plate 1 is also provided with the core-pulling slide block 8 horizontally inserted into the lower die plate 1 and the driving oil cylinder 9 connected with the core-pulling slide block 8, and the oblique guide structure is arranged between the core-pulling slide block 8 and the oblique slide block 7.

[0030] Specifically, the oblique guide structure includes the inclined track 10 obliquely arranged in the inner end of the core-pulling slide block 8, the inner end of the oblique slide block 7 is fixedly connected with the first slide guide column 11, the first slide guide column 11 is recessed inward to form the first slide 12, the inclined track 10 is clamped into the first slide 12, and the outer end of the core-pulling slide block 8 is in a cylindrical shape.

[0031] Preferably, the lower die plate 1 is also provided with the positioning lock 13 correspondingly arranged with the core-pulling slide block 8.

[0032] Specifically, the anti-retreat component 6 includes the side baffle 14 arranged on the side portion of the lower die plate 1, the bottom of the side baffle 14 is abutted with the outer end of the core-pulling slide block 8, and the top of the side baffle 14 is fixed on the upper die plate. The side baffle can limit the outer end of the core-pulling slide block to prevent the problem of retreat of the oil cylinder, when opening mold, the upper die plate moves upward to drive the side baffle to move upward, so that the side baffle and the core-pulling slide block are separated, so as to drive the oblique slide block core-pulling through the driving oil cylinder.

[0033] Specifically, the dovetail sliding block core-pulling assembly 4 comprises a second sliding guide column 15 arranged in the lower die plate 1, the inner end of the second sliding guide column 15 is fixedly connected with a rectangular sliding block 16 inserted into the annular clamping gap 3 from the outer side of the lower forming surface 2, the dovetail sliding block core-pulling assembly 4 further comprises a vertical core-pulling structure connected with the second sliding guide column 15, the vertical core-pulling structure comprises a vertical guide column 17, the bottom of the vertical guide column 17 is provided with a dovetail sliding block 18 arranged in an inclined manner, the second sliding guide column 15 is provided with a second sliding groove 19 arranged in an inclined manner and recessed inward, the dovetail sliding block 18 is inserted into the second sliding groove 19, and the vertical guide column 17 is fixed on the upper die plate. When the mold is opened, the upper die plate moves upwards to drive the vertical guide column 17 fixed on the upper die plate to move upwards synchronously, the vertical guide column 17 moves upwards to drive the second sliding guide column 15 to move away from the lower forming surface through cooperation of the dovetail sliding block 18 and the second sliding groove 19, so that the automatic core-pulling of the rectangular sliding block 16 can be realized.

[0034] Specifically, the lower die plate 1 is provided with a positioning plate 20 corresponding to the second sliding guide column 15, the positioning plate 20 is provided with a positioning sliding groove in the middle, the outer end of the second sliding guide column 15 is provided with a positioning sliding block 21 inserted into the positioning sliding groove, and the vertical guide column 17 is fixed on the upper die plate through screws. The positioning sliding groove cooperates with the positioning sliding block to limit the second sliding guide column.

[0035] The working principle of the utility model is that the dovetail sliding block core-pulling assembly 4 can synchronously pull the core when the mold is opened, after the mold is opened, the sliding block inclined core-pulling assembly 5 can automatically pull the core, and the anti-retreat assembly can limit the sliding block inclined core-pulling assembly 5 during injection molding to prevent the sliding block inclined core-pulling assembly 5 from retreating during injection molding.

[0036] The core-pulling sliding block can be driven to move along the horizontal direction through the driving oil cylinder, the core-pulling sliding block moves horizontally to drive the core-pulling sliding block 8 to reciprocate along the inclined direction through the inclined guide structure, the core-pulling sliding block 8 moves along the horizontal direction to drive the first sliding guide column 11 to move along the inclined direction through cooperation of the inclined track and the first sliding groove, and the first sliding guide column 11 moves to drive the inclined sliding block 7 to move, so that the automatic core-pulling of the inclined sliding block can be realized after product injection molding, and the positioning lock can be inserted into the core-pulling sliding block to lock and support the core-pulling sliding block during injection molding.

[0037] The side baffle can limit the outer end of the core-pulling slider to prevent the problem of oil cylinder retreat. When the mold is opened, the upper die plate moves upward to drive the side baffle to move upward, so that the side baffle and the core-pulling slider are separated, so as to drive the inclined slider core-pulling through the driving oil cylinder. When the mold is opened, the upper die plate moves upward to drive the several vertical guide columns 17 fixed on the upper die plate to move upward synchronously. The upward movement of the vertical guide column 17 can drive the second sliding guide column 15 to move away from the lower forming surface through the cooperation of the dovetail slider 18 and the second sliding groove 19, so as to realize the automatic core-pulling of the rectangular slider 16. The positioning sliding groove cooperates with the positioning slider to limit the second sliding guide column.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0039] Although the lower die plate 1, the lower forming surface 2, the annular gap 3, the dovetail slider core-pulling assembly 4, the slider inclined core-pulling assembly 5, the anti-retreat assembly 6, the inclined slider 7, the core-pulling slider 8, the driving oil cylinder 9, the inclined rail 10, the first sliding guide column 11, the first sliding groove 12, the positioning lock 13, the side baffle 14, the second sliding guide column 15, the rectangular slider 16, the vertical guide column 17, the dovetail slider 18, the second sliding groove 19, the positioning plate 20, the positioning slider 21, etc. are used more frequently in this paper, the use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A synchronous inclined core-pulling mechanism of a large slide with dovetail small slide of an automobile plastic part mold, comprising a lower mold plate (1), characterized in that, The upper end face of the lower mold plate (1) is symmetrically provided with two lower molding surfaces (2) constituting molding cavities, the lower molding surfaces (2) are inclined surfaces, the lower molding surfaces (2) are formed with inwardly recessed annular clamping joints (3), the lower mold plate (1) is provided with a plurality of dovetail sliding block core pulling assemblies (4) arranged circumferentially along the lower molding surfaces (2), and the two sides of the lower mold plate (1) are also symmetrically provided with sliding block oblique core pulling assemblies (5), and the two sides of the lower mold plate (1) are also provided with anti-retreat components (6).

2. The inclined core-drawing mechanism with a large slider and dovetail small slider for automobile plastic part mold synchronization of claim 1, wherein, The sliding block oblique core pulling assembly (5) comprises an oblique sliding block (7) obliquely arranged in the lower mold plate (1), the top end of the oblique sliding block (7) is connected with the lower molding surface (2), the side of the lower mold plate (1) is also provided with a core pulling sliding block (8) horizontally inserted into the lower mold plate (1) and a driving oil cylinder (9) connected with the core pulling sliding block (8), and the core pulling sliding block (8) and the oblique sliding block (7) are provided with an oblique guide structure.

3. The inclined core-drawing mechanism of the large slide with dovetail small slide synchronization of automobile plastic part mold according to claim 2, characterized in that, The oblique guide structure comprises an inclined track (10) obliquely arranged at the inner end of the core pulling sliding block (8), the inner end of the oblique sliding block (7) is fixedly connected with a first sliding guide column (11), the first sliding guide column (11) is provided with a first sliding groove (12) recessed inwardly, and the inclined track (10) is clamped into the first sliding groove (12).

4. The inclined core-drawing mechanism with a large slider and dovetail small slider for a mold of a plastic part of an automobile according to claim 3, characterized in that, The outer end of the core pulling sliding block (8) is in a cylindrical shape.

5. The inclined core-drawing mechanism with a large slider and dovetail small slider synchronization for automobile plastic part mold of claim 3, characterized in that, The lower mold plate (1) is also provided with a positioning lock (13) corresponding to the core pulling sliding block (8).

6. The inclined core-drawing mechanism with a large slider and dovetail small slider for a mold of a plastic part of an automobile according to claim 3, characterized in that, The anti-retreat component (6) comprises a side baffle (14) arranged on the side of the lower mold plate (1), the bottom of the side baffle (14) abuts against the outer end of the core pulling sliding block (8), and the top of the side baffle (14) is fixed on the upper mold plate.

7. The inclined core-drawing mechanism with synchronized large slide and dovetail small slide for automobile plastic part mold according to claim 1, characterized in that, The dovetail sliding block core pulling assembly (4) comprises a second sliding guide column (15) arranged in the lower mold plate (1), the inner end of the second sliding guide column (15) is fixedly connected with a rectangular sliding block (16) inserted into the annular clamping joint (3) from the outside of the lower molding surface (2), and the dovetail sliding block core pulling assembly (4) further comprises a vertical core pulling structure connected with the second sliding guide column (15).

8. The synchronized bevel core-drawing mechanism of large slide with dovetail small slide of automobile plastic part mold according to claim 7, characterized in that, The vertical core pulling structure comprises a vertical guide column (17), the bottom of the vertical guide column (17) is provided with an obliquely arranged dovetail sliding block (18), the second sliding guide column (15) is obliquely provided with a second sliding groove (19) recessed inwardly, the dovetail sliding block (18) is inserted into the second sliding groove (19), and the vertical guide column (17) is fixed on the upper mold plate.

9. The synchronized bevel core-drawing mechanism of large slide with dovetail small slide of automobile plastic part mold of claim 8, characterized in that, The lower mold plate (1) is provided with a positioning plate (20) corresponding to the second sliding guide column (15), the middle part of the positioning plate (20) is provided with a positioning sliding groove, and the outer end of the second sliding guide column (15) has a positioning sliding block (21) inserted into the positioning sliding groove.

10. The synchronized bevel core-drawing mechanism for large slide of automobile plastic part mold with dovetail small slide of claim 8, characterized in that, The vertical guide column (17) is fixed on the upper mold plate by screws.

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