Multi-direction secondary sliding block core-pulling mold structure
By using a multi-directional secondary slider core-pulling mold structure, multi-directional synchronous core pulling is achieved through the cooperation of primary and secondary sliders. This simplifies the mold structure and movement process, and solves the problem of difficult core pulling of multi-directional forming pins in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-03
AI Technical Summary
When processing injection molded workpieces with curved surfaces and arc-shaped holes, existing injection molds have difficulty in synchronously pulling out cores from multi-directional forming pins, which leads to complex mold structures and difficulties in motion control.
The multi-directional secondary slider core-pulling mold structure is adopted. Through the cooperation of the primary slider and the secondary slider, the primary slider is driven forward by the driving shovel base, and the core-pulling slider achieves multi-directional synchronous core pulling through radial sliding during the retraction process. Combined with the movable limit block and guide groove to restrict the sliding direction, the movement process is simplified.
It achieves multi-directional synchronous core pulling, simplifies the mold structure, avoids lateral stress between the forming pin and the workpiece hole, and improves the simplicity and efficiency of motion control.
Smart Images
Figure CN224074857U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to injection molds, and more particularly to a multi-directional secondary slider core-pulling mold structure. Background Technology
[0002] Many existing injection-molded parts require holes to be formed directly during the injection molding process. For holes on flat surfaces, core pulling can be achieved simply by the molding pin moving in and out in a straight line. However, for holes on other surfaces... Figure 1 The injection molded workpiece 100 shown has curved and arc surfaces. The holes 101 on the curved and arc surfaces are oriented differently, so the forming pins located on the curved and arc surfaces are also oriented differently. It is difficult to pull the cores of the forming pins in multiple directions at the same time. If a slider is set separately for each forming pin, it will complicate the mold structure and be detrimental to structural design and motion control. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a multi-directional secondary slider core pulling mold structure that is capable of multi-directional synchronous core pulling, and has a simple structure and simplified operation process, in order to address the shortcomings of the existing technology.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.
[0005] A multi-directional secondary slider core-pulling mold structure includes a primary slider, a secondary slider, and a driving shovel base. The secondary slider has a secondary groove extending through its front and rear ends. The rear end of the primary slider is located within the secondary groove, and the primary slider slides in conjunction with the secondary groove. The driving shovel base is located above the secondary slider and is used to drive the primary slider to slide back and forth. The front end of the primary slider forms a workpiece forming surface. A core-pulling slider is stacked above and / or below the primary slider, and the core-pulling slider can slide back and forth relative to the primary slider. The back-and-forth sliding trajectory of the core-pulling slider is located on the radial extension line of the workpiece forming surface. The front end of the core-pulling slider has a forming pin protruding towards the front of the workpiece forming surface. The top and / or bottom surface of the primary slider has receiving grooves corresponding to the core-pulling sliders. The rear end of the core-pulling slider has 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, multiple core-pulling sliders are provided above and below the primary slider.
[0007] Preferably, the workpiece forming surface is a concave arc surface, and the receiving groove extends a predetermined length along the tangent direction of the workpiece forming surface.
[0008] Preferably, the primary slider is provided with cover plates on both the upper and lower sides, and the primary slider and the cover plates slide in a sliding fit. The cover plates have multiple guide grooves on the side facing the primary slider, and the core-pulling sliders are correspondingly arranged in the guide grooves, and the core-pulling sliders slide in a sliding fit with the guide grooves.
[0009] Preferably, the primary slider has multiple limiting grooves, the distribution of which is perpendicular to the sliding direction of the primary slider. The cover plate has multiple cover plate limiting blocks, which are correspondingly disposed in the limiting grooves and can slide back and forth relative to the limiting grooves.
[0010] Preferably, it includes a forming inner mold, which is fixed between upper and lower cover plates, and the workpiece forming surface is formed at the front end of the forming inner mold.
[0011] Preferably, the rear end of the guide groove is provided with a radial limiting groove, the radial limiting groove extends radially along the forming surface of the workpiece, and the rear end of the core-pulling slider is provided with a radial limiting block, the radial limiting block is disposed in the radial limiting groove and the two slide in cooperation.
[0012] Preferably, the upper and lower sides of the forming inner mold are provided with a plurality of fixing slots, and the cover plate is formed with a plurality of fixing protrusions corresponding one-to-one with the fixing slots, and the fixing protrusions are engaged in the fixing slots.
[0013] Preferably, the secondary slider has a shovel base through hole, the primary slider has a shovel base linkage inclined hole, the driving shovel base passes through the shovel base through hole and the shovel base linkage inclined hole in sequence, and the driving shovel base and the shovel base linkage inclined hole are engaged by an inclined surface.
[0014] Preferably, a slide rod is fixed to the rear end of the primary slider, the slide rod passes through the secondary slider, and a spring is sleeved on the slide rod, the spring being clamped between the end cap of the slide rod and the rear end of the secondary slider.
[0015] In the multi-directional secondary slider core-pulling mold structure disclosed in this utility model, the secondary slider is used to drive the primary slider and the driving shovel base to move as a whole. The driving shovel base is used to drive the primary slider to move forward, thereby pushing the forming pin at the front end of the core-pulling slider into the injection mold cavity. When the injection molding process is completed, the driving shovel base first causes the primary slider to retract backward. Because the forward and backward sliding trajectory of the core-pulling slider is located on the radial extension line of the workpiece forming surface, the core-pulling slider is restricted to sliding only along the radial extension line corresponding to the position of the workpiece forming surface. At the same time, the movable limiting block at the rear end of the core-pulling slider is located in the receiving groove, and the movable limiting block... The position block can move left and right relative to the receiving groove, thereby providing the core-pulling slider with a margin of space to move relative to the primary slider. During the retraction of the primary slider, the core-pulling slider can maintain a position of sliding backward along the radial extension line of the workpiece forming surface, thereby avoiding lateral stress between the forming pin and the hole of the workpiece. Compared with the prior art, this utility model not only realizes multi-directional synchronous core pulling, but also has a simple overall structure. During the movement, the primary slider first performs a retraction movement, and then the secondary slider performs a second retraction movement to complete the core pulling movement. The whole action process is more simplified and conducive to motion control. Attached Figure Description
[0016] Figure 1 A 3D view of the injection molded part;
[0017] Figure 2 This is a structural diagram of the present invention and the injection-molded workpiece;
[0018] Figure 3 This is a three-dimensional view of the multi-directional secondary slider core-pulling mold structure of this utility model;
[0019] Figure 4 This is an exploded view of the multi-directional secondary slider core-pulling mold structure of this utility model;
[0020] Figure 5 This is a structural diagram of a slider and cover plate.
[0021] Figure 6 A structural diagram of a primary slider and a core-pulling slider;
[0022] Figure 7 This is a structural diagram of the core-pulling slider and cover plate;
[0023] Figure 8 This is a top view of the multi-directional secondary slider core-pulling mold structure of this utility model;
[0024] Figure 9 for Figure 8 A cross-sectional view along line AA. Detailed Implementation
[0025] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.
[0026] This utility model discloses a multi-directional secondary slider core-pulling mold structure, combined with... Figures 2 to 9 As shown, it includes a primary slider 1, a secondary slider 2, and a driving 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 within the secondary groove 20, and the primary slider 1 slides in conjunction with the secondary groove 20. The driving 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 forms 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.
[0027] In the above structure, the secondary slider 2 is used to drive the primary slider 1 and the driving shovel base 3 to move as a whole. The driving shovel base 3 is used to drive the primary slider 1 to move forward, thereby pushing the forming pin 40 at the front end of the core-pulling slider 4 into the injection mold cavity. When the injection molding process is completed, the driving shovel base 3 first causes the primary slider 1 to retract backward. Because the forward and backward sliding trajectory of the core-pulling slider 4 is located on the radial extension line of the workpiece forming surface 10, the core-pulling slider 4 is restricted to sliding only along the radial extension line corresponding to the 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... The sliding block 4 moves left and right relative to the receiving groove 11, thus providing ample space for the core-pulling slider 4 to move relative to the primary slider 1. During the retraction of the primary slider 1, the core-pulling slider 4 can maintain a position that slides backward along the radial extension line of the workpiece forming surface 10, thereby avoiding lateral stress between the forming pin 40 and the hole in the workpiece. Compared with the prior art, this utility model not only achieves multi-directional synchronous core pulling, but also has a simple overall structure. During the movement, the primary slider 1 first performs a retraction movement, and then the secondary slider 2 performs a second retraction movement to complete the core pulling movement. The entire action process is more simplified and facilitates motion control.
[0028] like Figure 1 As shown, the curved surface of the injection molded workpiece has two rows of holes 101. In this embodiment, multiple core-pulling sliders 4 are provided above and below the primary slider 1.
[0029] In this embodiment, the workpiece forming surface 10 is a concave arc surface, and the receiving groove 11 extends a predetermined length along the tangent direction of the workpiece forming surface 10. For injection molded workpieces with regular arc or cylindrical shapes, multiple core-pulling sliders 4 are arranged radially with the same center as reference. However, for injection molded workpieces with irregular surfaces, the radius direction is defined separately with reference to the center of the arc surface where the hole 101 is located, and the extension direction of the core-pulling slider 4 and the extension direction of the receiving groove 11 are determined accordingly.
[0030] As a preferred method, combined Figures 4 to 7 As shown, 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, and 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.
[0031] In this embodiment, the cover plate 5 is provided on the upper and lower sides of the primary slider 1 to restrict the sliding direction and sliding stroke of the core-pulling slider 4. In practical applications, the cover plate 5 should move backward during the second core-pulling. During the first core-pulling process, the primary slider 1 needs to slide a preset distance relative to the cover plate 5. Specifically, 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. Multiple cover plate limiting blocks 52 are fixed on the cover plate 5. The cover plate limiting blocks 52 are correspondingly provided in the limiting grooves 12, and the cover plate limiting blocks 52 can slide back and forth relative to the limiting grooves 12.
[0032] Based on this, this embodiment 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. The forming inner mold 6 serves both to close the mold cavity and to 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, the radial limiting groove 51 extends radially along the workpiece forming surface 10, and the rear end of the core-pulling slider 4 is provided with a radial limiting block 42, the radial limiting block 42 is disposed in the radial limiting groove 51 and the two slide in cooperation.
[0034] In this embodiment, the cover plate 5 and the forming inner mold 6 are fixed by buckles and slots. Specifically, the upper and lower sides of the forming inner mold 6 are provided with multiple fixing slots 60, and the cover plate 5 is provided with multiple fixing buckles 53 that correspond one-to-one with the fixing slots 60. The fixing buckles 53 are engaged in the fixing slots 60.
[0035] As a preferred driving method, in this 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 engaged by an inclined surface.
[0036] In order to provide elastic buffering during the forward and backward sliding process, in this embodiment, the rear end of the primary slider 1 is fixed with a slide rod 14, the slide rod 14 passes through the secondary slider 2, and a spring 15 is sleeved on the slide rod 14. The spring 15 is clamped between the end cap 140 of the slide rod 14 and the rear end of the secondary slider 2.
[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.
Claims
1. A multidirectional secondary slide core-pulling mold structure characterized by, The utility model relates to a kind of core-pulling slide blocks, including once slider (1), secondary slider (2) and driving shovel base (3), the secondary slider (2) is opened in it and is passed through secondary sliding groove (20) in its front and back two ends, the rear end of the once slider (1) is located in the secondary sliding groove (20), and the once slider (1) is slidably connected with the secondary sliding groove (20), the driving shovel base (3) is located above the secondary slider (2), the driving shovel base (3) is used to drive the once slider (1) to slide back and forth, the front end of the once slider (1) is formed with workpiece forming surface (10), the upper and / or lower of the once slider (1) is stacked with core-pulling slide block (4), the core-pulling slide block (4) can slide back and forth relative to the once slider (1), and the front and back sliding track of the core-pulling slide block (4) is located on the radial extension line of the workpiece forming surface (10), the front end of the core-pulling slide block (4) is provided with the forming pin rod (40) that protrudes to the front side of the workpiece forming surface (10), the top surface and / or bottom surface of the once slider (1) is opened with the accommodating groove (11) corresponding to the core-pulling slide block (4), the rear end of the core-pulling slide block (4) is formed with movable limit block (41) that protrudes into the accommodating groove (11), and the movable limit block (41) can be left and right movable relative to the accommodating groove (11).
2. The multidirectional secondary slide core-pulling mold structure according to claim 1, wherein, The upper and lower of the once slider (1) are each provided with a plurality of core-pulling slide blocks (4).
3. The multidirectional secondary slide core-pulling mold structure according to claim 1, wherein The workpiece forming surface (10) is concave circular arc surface, and the accommodating groove (11) extends along the tangent direction of the workpiece forming surface (10) by a preset length.
4. The multidirectional secondary slide core-pulling mold structure according to claim 2, wherein The upper and lower sides of the once slider (1) are each provided with a cover plate (5), and the once slider (1) is slidably connected with the cover plate (5), one side of the cover plate (5) towards the once slider (1) is opened with a plurality of guide grooves (50), and the core-pulling slide block (4) is correspondingly arranged in the guide groove (50), and the core-pulling slide block (4) is slidably connected with the guide groove (50).
5. The multidirectional secondary slide core-pulling mold structure according to claim 4, wherein, A plurality of limit sliding grooves (12) are opened on the once slider (1), and the distribution of the plurality of limit sliding grooves (12) is perpendicular to the sliding direction of the once slider (1), a plurality of cover plate limit blocks (52) are fixed on the cover plate (5), the cover plate limit block (52) is correspondingly arranged in the limit sliding groove (12), and the cover plate limit block (52) can slide back and forth relative to the limit sliding groove (12).
6. The multidirectional secondary slide core-pulling mold structure according to claim 4, wherein The utility model relates to a kind of core-pulling slide blocks, including once slider (1), secondary slider (2) and driving shovel base (3), the secondary slider (2) is opened in it and is passed through secondary sliding groove (20) in its front and back two ends, the rear end of the once slider (1) is located in the secondary sliding groove (20), and the once slider (1) is slidably connected with the secondary sliding groove (20), the driving shovel base (3) is located above the secondary slider (2), the driving shovel base (3) is used to drive the once slider (1) to slide back and forth, the front end of the once slider (1) is formed with workpiece forming surface (10), the upper and / or lower of the once slider (1) is stacked with core-pulling slide block (4), the core-pulling slide block (4) can slide back and forth relative to the once slider (1), and the front and back sliding track of the core-pulling slide block (4) is located on the radial extension line of the workpiece forming surface (10), the front end of the core-pulling slide block (4) is provided with the forming pin rod (40) that protrudes to the front side of the workpiece forming surface (10), the top surface and / or bottom surface of the once slider (1) is opened with the accommodating groove (11) corresponding to the core-pulling slide block (4), the rear end of the core-pulling slide block (4) is formed with movable limit block (41) that protrudes into the accommodating groove (11), and the movable limit block (41) can be left and right movable relative to the accommodating groove (11).
7. The multi-directional secondary slide core-pulling mold structure according to claim 4, wherein The rear end of the guide groove (50) is provided with radial limit groove (51), the radial limit groove (51) extends along the radial direction of the workpiece forming surface (10), the rear end of the core-pulling slide block (4) is provided with radial limit block (42), the radial limit block (42) is arranged in the radial limit groove (51) and slidably connected.
8. The multidirectional secondary slide core-pulling mold structure according to claim 6, 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 protrusions (53) corresponding to the fixed clamping grooves (60) one by one, and the fixed protrusions (53) are clamped in the fixed clamping grooves (60).
9. The multidirectional secondary sliding core mold structure of claim 1, wherein, A shovel base through hole (21) is formed in the secondary sliding block (2), a shovel base linkage inclined hole (13) is formed in the primary sliding block (1), 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 through an inclined surface.
10. The multidirectional secondary sliding core mold structure of claim 1, wherein, The rear end of the primary sliding block (1) is fixed with a sliding rod (14), the sliding rod (14) passes through the secondary sliding block (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 sliding block (2).