A multi-directional secondary slider core-pulling mold structure

Abstract

The application discloses a multidirectional secondary slider core-pulling mold structure which comprises a primary slider, a secondary slider and a driving shovel base, the primary slider is in sliding fit with the secondary slider, the driving shovel base is arranged above the secondary slider, the driving shovel base is used for driving the primary slider to slide back and forth, the front end of the primary slider is formed with a workpiece forming surface, core-pulling sliders are arranged above and / or below the primary slider, the core-pulling sliders can slide back and forth relative to the primary slider, the front and back sliding tracks of the core-pulling sliders are located on the radial extension lines of the workpiece forming surface, the front end of the core-pulling slider is provided with a forming pin rod which protrudes to the front side of the workpiece forming surface, the top surface and / or the bottom surface of the primary slider is provided with accommodating grooves which are in one-to-one correspondence with the core-pulling sliders, the rear end of the core-pulling slider is formed with movable limiting blocks which protrude into the accommodating grooves and can move left and right relative to the accommodating grooves. The application can realize multidirectional synchronous core-pulling, and has the advantages of simple structure and simplified action process.

Description

TECHNICAL FIELD

[0001] The present application relates to injection mold, especially to a multi-directional secondary slider core-pulling mold structure. BACKGROUND

[0002] Many existing injection molded parts need to form holes directly during injection molding. For the holes on flat surfaces, the core-pulling can be realized by the straight in-and-out movement of the molding pins. However, for the injection molded part 100 shown in the figure, the holes 101 on the curved surfaces and arc surfaces are oriented differently, so the molding pins on the curved surfaces and arc surfaces are also oriented differently. It is difficult to core-pull the multi-directional molding pins simultaneously. If a slider is provided for each molding pin, the mold structure will be complicated, which is not conducive to structural design and motion control. Figure 1 SUMMARY

[0003] The technical problem to be solved by the present application is to provide a multi-directional secondary slider core-pulling mold structure that can core-pull in multiple directions simultaneously, and has a simple structure and a simplified action process, in view of the deficiencies of the prior art.

[0004] To solve the above technical problems, the present application adopts the following technical solutions.

[0005] A multi-directional secondary slider core-pulling mold structure comprises a primary slider, a secondary slider, and a driving shovel base. The secondary slider has a secondary sliding groove extending through the front and rear ends thereof. The rear end of the primary slider is arranged in the secondary sliding groove, and the primary slider and the secondary sliding groove are in sliding cooperation. The driving shovel base is arranged above the secondary slider, and is used to drive the primary slider to slide forward and backward. The front end of the primary slider forms a workpiece forming surface. A core-pulling slider is arranged above and / or below the primary slider, and can slide forward and backward relative to the primary slider. The forward and backward sliding tracks of the core-pulling slider are located on the radial extension line of the workpiece forming surface. The front end of the core-pulling slider is provided with a molding pin protruding towards the front side of the workpiece forming surface. The top surface and / or the bottom surface of the primary slider is provided with a receiving groove corresponding to the core-pulling slider. The rear end of the core-pulling slider is provided with a movable limiting block protruding into the receiving groove, and the movable limiting block can move left and right relative to the receiving groove.

[0006] Preferably, a plurality of core-pulling sliders are arranged above and below the primary slider.

[0007] Preferably, the workpiece forming surface is a concave arc surface, and the receiving groove extends along the tangent direction of the workpiece forming surface by a predetermined length.

[0008] ​Preferably, the primary slider is provided with a cover plate on both upper and lower sides, and the primary slider is in sliding cooperation with the cover plate, a plurality of guide grooves are formed on the side of the cover plate facing the primary slider, and the core pull slider is arranged in the guide groove in one-to-one correspondence, and the core pull slider is in sliding cooperation with the guide groove.

[0009] Preferably, a plurality of limiting sliding grooves are formed on the primary slider, the distribution of the plurality of limiting sliding grooves is perpendicular to the sliding direction of the primary slider, a plurality of cover plate limiting blocks are fixed on the cover plate, the cover plate limiting blocks are arranged in the limiting sliding grooves in one-to-one correspondence, and the cover plate limiting blocks can slide forward and backward relative to the limiting sliding grooves.

[0010] Preferably, a shaped inner mold is included, the shaped inner mold is fixed between the upper and lower cover plates, and the workpiece forming surface is formed at the front end of the shaped inner mold.

[0011] Preferably, the rear end of the guide groove is provided with a radial limiting groove, the radial limiting groove extends along the radial direction of the workpiece forming surface, the rear end of the core pull slider is provided with a radial limiting block, the radial limiting block is arranged in the radial limiting groove and the two are in sliding cooperation.

[0012] Preferably, the upper and lower sides of the shaped inner mold are respectively provided with a plurality of fixed clamping grooves, a plurality of fixed convex buckles corresponding to the fixed clamping grooves are formed on the cover plate, and the fixed convex buckles are clamped in the fixed clamping grooves.

[0013] Preferably, a shovel base perforation is formed on the secondary slider, a shovel base linkage inclined hole is formed on the primary slider, the driving shovel base sequentially passes through the shovel base perforation and the shovel base linkage inclined hole, and the driving shovel base and the shovel base linkage inclined hole are in abutting cooperation through an inclined surface.

[0014] Preferably, a slide rod is fixed at the rear end of the primary slider, the slide rod passes through the secondary slider, a spring is sleeved on the slide rod, and the spring is clamped between the end cap of the slide rod and the rear end of the secondary slider.

[0015] The multi-directional secondary slider core-pulling mold structure discloses a secondary slider for driving the primary slider and the driving shovel base to move integrally, and the driving shovel base is used for driving the primary slider to move forward, so as to push the molding pin rod at the front end of the core-pulling slider into the injection mold cavity. When the injection process is completed, the driving shovel base drives the primary slider to retreat backward first. Since the forward and backward sliding tracks of the core-pulling slider are located on the radial extension line of the workpiece forming surface, the core-pulling slider can only slide along the radial extension line of the corresponding position of the workpiece forming surface, and meanwhile, the movable limiting block at the rear end of the core-pulling slider is located in the containing groove, and the movable limiting block can move left and right relative to the containing groove, so as to provide a margin space for the core-pulling slider to act on the primary slider. During the retreat of the primary slider, the core-pulling slider can keep sliding backward along the radial extension line of the workpiece forming surface, thereby avoiding the generation of lateral stress between the molding pin rod and the hole position of the workpiece. Compared with the prior art, the multi-directional synchronous core-pulling is realized, and the overall structure of the mold is simple. During the movement, the primary slider first performs a retreat movement, and then the secondary slider performs a secondary retreat movement, so that the core-pulling movement is completed, the whole action process is simplified, and the movement control is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a three-dimensional view of an injection molded workpiece;

[0017] Figure 2 is a structural view of the injection molded workpiece of the present application;

[0018] Figure 3 is a three-dimensional view of the multi-directional secondary slider core-pulling mold structure of the present application;

[0019] Figure 4 is an exploded view of the multi-directional secondary slider core-pulling mold structure of the present application;

[0020] Figure 5 is a structural view of the primary slider and the cover plate;

[0021] Figure 6 is a structural view of the primary slider and the core-pulling slider;

[0022] Figure 7 is a structural view of the core-pulling slider and the cover plate;

[0023] Figure 8 is a top view of the multi-directional secondary slider core-pulling mold structure of the present application;

[0024] Figure 9 is Figure 8 is a sectional view along line A-A. DETAILED DESCRIPTION

[0025] The application will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0026] The application discloses a multidirectional secondary slider core-pulling mold structure. Figures 2 to 9 As shown in the figure, it comprises a primary slider 1, a secondary slider 2 and a driving shovel base 3, the secondary slider 2 is provided with a secondary sliding groove 20 penetrating through the front and back ends, the rear end of the primary slider 1 is arranged in the secondary sliding groove 20, and the primary slider 1 is in sliding cooperation with the secondary sliding groove 20, the driving shovel base 3 is arranged above the secondary slider 2, and the driving shovel base 3 is used for driving the primary slider 1 to slide forward and backward, the front end of the primary slider 1 is formed with a workpiece forming surface 10, and the core-pulling slider 4 is arranged above and / or below the primary slider 1, the core-pulling slider 4 can slide forward and backward relative to the primary slider 1, the forward and backward sliding tracks of the core-pulling slider 4 are located on the radial extension line of the workpiece forming surface 10, the front end of the core-pulling slider 4 is provided with a forming pin rod 40 protruding to the front side of the workpiece forming surface 10, the top surface and / or the bottom surface of the primary slider 1 is provided with a receiving groove 11 corresponding to the core-pulling slider 4, and the rear end of the core-pulling slider 4 is formed with a movable limiting block 41 protruding into the receiving groove 11, and the movable limiting block 41 can move left and right relative to the receiving groove 11.

[0027] In the structure, the secondary slider 2 is used for driving the primary slider 1 and the driving shovel base 3 to move integrally, the driving shovel base 3 is used for driving the primary slider 1 to move forward, so that the forming pin rod 40 at the front end of the core-pulling slider 4 is pushed into the injection mold cavity, when the injection process is completed, the driving shovel base 3 first drives the primary slider 1 to retreat backward, because the forward and backward sliding tracks of the core-pulling slider 4 are located on the radial extension line of the workpiece forming surface 10, so that the core-pulling slider 4 can only slide along the radial extension line of the corresponding position of the workpiece forming surface 10, at the same time, the movable limiting block 41 at the rear end of the core-pulling slider 4 is located in the receiving groove 11, and the movable limiting block 41 can move left and right relative to the receiving groove 11, so as to provide the core-pulling slider 4 with a space for action movement relative to the primary slider 1, in the process of the primary slider 1 retreating, the core-pulling slider 4 can keep the position and pose of sliding backward along the radial extension line of the workpiece forming surface 10, thereby avoiding the lateral stress between the forming pin rod 40 and the hole position of the workpiece, compared with the prior art, the application not only realizes multidirectional synchronous core-pulling, but also has a simple overall structure, in the movement process, the primary slider 1 first performs a primary retreat movement, and then the secondary slider 2 performs a secondary retreat movement, so that the core-pulling movement can be completed, the whole action process is more simplified, and the movement control is facilitated.

[0028] As shown in the figure, Figure 1As shown, the curved surface of the injection molded workpiece has two rows of hole positions 101, and in this embodiment, the upper and lower sides of the primary slider 1 are provided with a plurality of core-pulling sliders 4.

[0029] In this embodiment, the workpiece forming surface 10 is a concave circular arc surface, and the accommodating groove 11 extends along the tangent direction of the workpiece forming surface 10 for a predetermined length. For regular circular arc or cylindrical injection molded workpieces, the plurality of core-pulling sliders 4 are arranged to slide along the radial direction with the same center, but for irregular surface injection molded workpieces, the center of the circular arc surface where the hole position 101 is located is used as the reference to define the radial direction, and the extension direction of the core-pulling slider 4 and the extension direction of the accommodating groove 11 are determined accordingly.

[0030] As a preferred mode, in combination with Figures 4 to 7 As shown, the upper and lower sides of the primary slider 1 are provided with a cover plate 5, and the primary slider 1 and the cover plate 5 are slidingly connected, and a plurality of guide grooves 50 are formed on the side of the cover plate 5 facing the primary slider 1, and the core-pulling sliders 4 are arranged one-to-one in the guide grooves 50, and the core-pulling sliders 4 and the guide grooves 50 are slidingly connected.

[0031] In this embodiment, the cover plate 5 is arranged on the upper and lower sides of the primary slider 1, which can limit the sliding direction and stroke of the core-pulling slider 4. In actual application, the cover plate 5 should retreat during secondary core-pulling, and the primary slider 1 needs to slide a predetermined distance relative to the cover plate 5 during primary core-pulling. Specifically, a plurality of limiting sliding grooves 12 are formed on the primary slider 1, and the plurality of limiting sliding grooves 12 are distributed vertically to the sliding direction of the primary slider 1, and a plurality of cover plate limiting blocks 52 are fixed on the cover plate 5, and the cover plate limiting blocks 52 are arranged one-to-one in the limiting sliding grooves 12, and the cover plate limiting blocks 52 can slide forward and backward relative to the limiting sliding grooves 12.

[0032] On this basis, this embodiment includes a forming inner mold 6, which is fixed between the upper and lower cover plates 5, and the workpiece forming surface 10 is formed at the front end of the forming inner mold 6. The forming inner mold 6 is used to close the mold cavity and assemble and fix the upper and lower cover plates 5.

[0033] In order to limit the radial movement direction of the core-pulling slider 4, in this embodiment, the rear end of the guide groove 50 is provided with a radial limiting groove 51, which extends along the radial direction of the workpiece forming surface 10, and the rear end of the core-pulling slider 4 is provided with a radial limiting block 42, which is arranged in the radial limiting groove 51 and slidingly connected.

[0034] In the embodiment, the cover plate 5 and the forming inner mold 6 are fixed by protrusions and slots. Specifically, the upper and lower sides of the forming inner mold 6 are respectively provided with a plurality of fixed slots 60, and the cover plate 5 is formed with a plurality of fixed protrusions 53 corresponding to the fixed slots 60, and the fixed protrusions 53 are clamped in the fixed slots 60.

[0035] As a preferred driving mode, in the embodiment, the secondary slider 2 is provided with a shovel base through hole 21, the primary slider 1 is provided with a shovel base linkage inclined hole 13, the driving shovel base 3 passes through the shovel base through hole 21 and the shovel base linkage inclined hole 13 in sequence, and the driving shovel base 3 and the shovel base linkage inclined hole 13 are abutted and matched by an inclined surface.

[0036] In order to play an elastic buffering role in the forward and backward sliding process, in the embodiment, the rear end of the primary slider 1 is fixed with a sliding rod 14, the sliding rod 14 passes through the secondary slider 2, the sliding rod 14 is sleeved with a spring 15, and the spring 15 is clamped between the end cap 140 of the sliding rod 14 and the rear end of the secondary slider 2.

[0037] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement or improvement within the technical scope of the present application shall be included in the protection scope of the present application.

Claims

1. A multidirectional secondary slide core-pulling mold structure characterized by, The device includes a primary slider (1), a secondary slider (2), and a drive shovel base (3). The secondary slider (2) has a secondary groove (20) extending through its front and rear ends. The rear end of the primary slider (1) is located in the secondary groove (20), and the primary slider (1) slides in conjunction with the secondary groove (20). The drive shovel base (3) is located above the secondary slider (2) and is used to drive the primary slider (1) to slide back and forth. The front end of the primary slider (1) has a workpiece forming surface (10). A core-pulling slider (4) is stacked above and / or below the primary slider (1). The core-pulling slider (4) can slide back and forth relative to the primary slider (1), and the back and forth sliding trajectory of the core-pulling slider (4) is located on the radial extension line of the workpiece forming surface (10). The front end of the core-pulling slider (4) is provided with a forming pin (40) protruding towards the front side of the workpiece forming surface (10). The top surface and / or bottom surface of the primary slider (1) are provided with receiving grooves (11) corresponding to the core-pulling slider (4). The rear end of the core-pulling slider (4) is formed with a movable limiting block (41) protruding into the receiving groove (11). The movable limiting block (41) can move left and right relative to the receiving groove (11). The primary slider (1) is provided with cover plates (5) on both the upper and lower sides, and the primary slider (1) and the cover plates (5) slide in a front-to-back manner. The cover plates (5) have multiple guide grooves (50) on the side facing the primary slider (1). The core-pulling sliders (4) are correspondingly arranged in the guide grooves (50), and the core-pulling sliders (4) slide in a front-to-back manner with the guide grooves (50). The primary slider (1) is provided with multiple limiting grooves (12), and the distribution of the multiple limiting grooves (12) is perpendicular to the sliding direction of the primary slider (1). The cover plate (5) is fixed with multiple cover plate limiting blocks (52), and the cover plate limiting blocks (52) are correspondingly arranged in the limiting grooves (12), and the cover plate limiting blocks (52) can slide back and forth relative to the limiting grooves (12). The secondary slider (2) has a shovel base through hole (21), and the primary slider (1) has a shovel base linkage inclined hole (13). The driving shovel base (3) passes through the shovel base through hole (21) and the shovel base linkage inclined hole (13) in sequence, and the driving shovel base (3) and the shovel base linkage inclined hole (13) are engaged by an inclined surface.

2. The multidirectional secondary slide core-pulling mold structure according to claim 1, wherein, Multiple core-pulling sliders (4) are provided above and below the primary slider (1).

3. The multidirectional secondary slide core-pulling mold structure according to claim 1, wherein The workpiece forming surface (10) is a concave arc surface, and the receiving groove (11) extends for a predetermined length along the tangent direction of the workpiece forming surface (10).

4. The multidirectional secondary slide core-pulling mold structure according to claim 1, wherein It includes a forming inner mold (6), which is fixed between two upper and lower cover plates (5), and the workpiece forming surface (10) is formed at the front end of the forming inner mold (6).

5. The multidirectional secondary slide core-pulling mold structure according to claim 1, wherein The rear end of the guide groove (50) is provided with a radial limiting groove (51) extending along the radial direction of the workpiece forming surface (10), and the rear end of the core-pulling slider (4) is provided with a radial limiting block (42) arranged in the radial limiting groove (51) and in sliding fit with the radial limiting groove (51).

6. The multidirectional secondary slide core-pulling mold structure according to claim 4, wherein The upper and lower sides of the forming inner mold (6) are respectively provided with a plurality of fixed clamping grooves (60), and the cover plate (5) is formed with a plurality of fixed convex buckles (53) corresponding to the fixed clamping grooves (60) one by one, and the fixed convex buckles (53) are clamped in the fixed clamping grooves (60).

7. The multidirectional secondary sliding core mold structure of claim 1, wherein, The rear end of the primary slider (1) is fixed with a sliding rod (14), the sliding rod (14) passes through the secondary slider (2), a spring (15) is sleeved on the sliding rod (14), and the spring (15) is clamped between the end cap (140) of the sliding rod (14) and the rear end of the secondary slider (2).

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