Die capable of realizing multi-layer die drawing
By designing a multi-level mold extraction mold, using the combination of sliders and cores and auxiliary structures, the problem of difficult traditional molds to form complex structural workpieces at one time is solved, and smooth mold release and cost savings of workpieces are achieved.
Patent Information
- Application Number
- CN202421401885.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-19
AI Technical Summary
It is difficult for traditional molds to achieve one-time molding processing on workpieces with complex structures, such as workpieces with flip and inverted structures, resulting in the need of subsequent processing and increased process and cost.
A multi-layer mold extraction mold is designed to form a cavity through the combination of sliders and multiple cores, and the sequential action of the sliders or cores is achieved using auxiliary structures such as inclined guide columns, mold lockers, elastic glue, etc., to realize multi-layer mold extraction of the workpiece.
The workpieces with complex structures are realized in one-time molding, ensuring smooth molding of the flange and inverted structures at the opening of the workpiece, saving processes, reducing costs, and simple structure and low manufacturing costs.
Smart Images
Figure CN222645216U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of injection molding, in particular to a mold capable of realizing multi-level mold extraction. Background Art
[0002] Injection molding is a low-cost mass production process for plastic products. Injection molds are required during the injection molding process. After the molds are closed, the molding machine injects molten material into the mold cavity. After the material cools, a product matching the shape of the cavity is formed.
[0003] There is a workpiece, the opening of which is provided with a flanging mechanism, and an undercut structure is also provided on the outside of the flanging structure. When using a mold to produce such a workpiece, it is necessary to consider how to demould smoothly the undercut structure and how to demould the sandwich structure on the inner side of the flanging;
[0004] However, due to the limitations of traditional mold structures, it is impossible to achieve one-time molding of such complex structures, and it is impossible to use injection molding to achieve one-time molding production for such workpieces.
[0005] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention
[0006] The utility model aims to solve the above-mentioned deficiencies in the prior art and proposes a multi-level die drawing mold with simple structure, ingenious design and reasonable layout, which utilizes sliders and cores in multiple directions to realize the processing of workpieces with flanges at the opening and undercut structures on the outer side of the flanges.
[0007] The technical solution of the utility model is: a mold capable of realizing multi-level mold extraction, comprising a fixed mold part and a movable mold part, the fixed mold part comprising a fixed mold taking-up plate 1, a stripping plate 2, a fixed mold plate 3 and a fixed mold pushing plate 4 are sequentially arranged below the fixed mold taking-up plate 1, the movable mold part comprising a movable mold taking-up plate 5, a movable mold bottom plate 6 and a movable mold plate 7 are sequentially arranged above the movable mold taking-up plate 5, characterized in that: an inclined guide column 8 is arranged in the movable mold plate 7, a slider 9 is movably connected in the fixed mold pushing plate 4, a guide groove matching the inclined guide column 8 is opened on the slider 9, a locking block 10 located outside the slider 9 is also arranged in the movable mold plate 7, and the contact surfaces between the locking block 10 and the slider 9 are both inclined surfaces,
[0008] The movable mold base plate 6 is provided with a movable mold first drawing core 11.
[0009] The fixed mold plate 3 is provided with a fixed mold gate core 12 and a fixed mold first drawing core 13.
[0010] The fixed mold push plate 4 is provided with a fixed mold ejection core 14, and the movable mold ejection core 15 is provided in the movable mold plate 7, and the fixed mold ejection core 14 is located above the slider 9, and the movable mold ejection core 15 is located below the slider 9.
[0011] After injection molding, the top of the movable mold first pull core 11 contacts the inner wall of the workpiece 16, the bottom end surface of the fixed mold gate core 12 of the slider 9 and the inner side surface of the fixed mold first pull core 13 contact the outer wall of the workpiece 16, the end of the slider 9 contacts the undercut of the flange position of the workpiece 16, and the fixed mold ejection core 14 and the movable mold ejection core 15 contact the top and bottom ends of the flange position of the workpiece 16 respectively.
[0012] A first elastic glue 17 is arranged between the stripping plate 2 and the fixed mold plate 3, a second elastic glue 18 is arranged between the movable mold bottom plate 6 and the movable mold plate 7, a mold locker 19 is arranged between the fixed mold plate 3 and the fixed mold push plate 4, and a limiting screw 20 is arranged between the fixed mold taking plate 1 and the stripping plate 2.
[0013] Compared with the prior art, the utility model has the following advantages:
[0014] This structural form of the mold that can realize multi-level mold extraction has a simple structure, ingenious design, and reasonable layout. It is designed to solve the problem that traditional molds are difficult to perform one-time molding processing on workpieces with special structures. A special structure is designed. It forms a cavity by combining a slider and multiple cores, and realizes the sequential action of the above sliders or cores through auxiliary structures such as inclined guide columns, mold locks, and elastic glue, thereby realizing their multi-level mold extraction action. Through this complex structure, a flange structure at the opening of the workpiece can be formed during the molding process, and an undercut structure can be formed on the outside of the flange structure, and smooth demoulding action at the above locations can be guaranteed. This mold can perform one-time molding processing on workpieces with special structures, does not require subsequent processing, saves processes, and reduces costs. At the same time, it is simple to make and has low manufacturing costs. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.
[0016] Figure 2 It is a partial enlarged view of the undercut portion of the workpiece in the embodiment of the utility model. DETAILED DESCRIPTION
[0017] The specific implementation of the present utility model will be described below in conjunction with the accompanying drawings. Figure 1 , Figure 2As shown: a mold capable of realizing multi-level mold extraction, comprising a fixed mold part and a movable mold part, the fixed mold part comprising a fixed mold taking-up plate 1, below which a stripping plate 2, a fixed mold plate 3 and a fixed mold pushing plate 4 are sequentially arranged, the movable mold part comprising a movable mold taking-up plate 5, above which a movable mold bottom plate 6 and a movable mold plate 7 are sequentially arranged, characterized in that an inclined guide column 8 is arranged in the movable mold plate 7, a slider 9 is movably connected in the fixed mold pushing plate 4, a guide groove matching the inclined guide column 8 is opened on the slider 9, a locking block 10 located outside the slider 9 is also arranged in the movable mold plate 7, and the contact surfaces between the locking block 10 and the slider 9 are both inclined surfaces,
[0018] The movable mold base plate 6 is provided with a movable mold first drawing core 11.
[0019] The fixed mold plate 3 is provided with a fixed mold gate core 12 and a fixed mold first drawing core 13.
[0020] The fixed mold push plate 4 is provided with a fixed mold ejection core 14, and the movable mold ejection core 15 is provided in the movable mold plate 7, and the fixed mold ejection core 14 is located above the slider 9, and the movable mold ejection core 15 is located below the slider 9.
[0021] After injection molding, the top of the movable mold first pull core 11 contacts the inner wall of the workpiece 16, the bottom end surface of the fixed mold gate core 12 of the slider 9 and the inner side surface of the fixed mold first pull core 13 contact the outer wall of the workpiece 16, the end of the slider 9 contacts the undercut of the flange position of the workpiece 16, and the fixed mold ejection core 14 and the movable mold ejection core 15 contact the top and bottom ends of the flange position of the workpiece 16 respectively.
[0022] A first elastic glue 17 is arranged between the stripping plate 2 and the fixed mold plate 3, a second elastic glue 18 is arranged between the movable mold bottom plate 6 and the movable mold plate 7, a mold locker 19 is arranged between the fixed mold plate 3 and the fixed mold push plate 4, and a limiting screw 20 is arranged between the fixed mold taking plate 1 and the stripping plate 2.
[0023] The working process of the mold capable of realizing multi-level mold extraction of the embodiment of the utility model is as follows: in the mold closing state, the end of the slider 9, the top of the movable mold first-drawing core 11, the fixed mold gate core 12, the fixed mold first-drawing core 13, the fixed mold ejection core 14 and the movable mold ejection core 15 are enclosed together to form a cavity, and the molding machine injects the molten material into the cavity, and the material is cooled to form a workpiece 16, the workpiece 16 is a closed cylindrical shape as a whole, and a flange structure is provided at the opening of the workpiece 16, the bottom edge of the fixed mold first-drawing core 13 is located between the body of the workpiece 16 and the flange structure, and at the same time, an undercut structure is also provided on the outside of the flange structure, and this undercut structure is formed by the end of the slider 9 occupying the position;
[0024] When the mold is opened, the stripper plate 2 and the fixed mold plate 3 are first separated under the action of the first elastic glue 17, and the runner and the workpiece 16 are separated at this time; at the same time, the movable mold bottom plate 6 and the movable mold plate 7 are also separated under the action of the second elastic glue 18, so that the top of the movable mold first pulling core 11 is separated from the inner wall of the workpiece 16, and the movable mold is first pulled out and the push plate of the movable mold is ejected;
[0025] The mold opening action continues, the fixed mold taking plate 1 and the stripping plate 2 separate, the material handle falls off from the stripping plate 2, and a robot takes the material handle away;
[0026] The mold is continued to be opened, the fixed mold push plate 4 is separated from the movable mold plate 7, and under the action of the inclined guide column 8, the slider 9 starts to move away from the cavity, and the end of the slider 9 is pulled out from the undercut structure on the workpiece 16 to realize the side core pulling action;
[0027] When the mold opening action reaches the set position, the mold locker 19 is opened, the fixed mold plate 3 and the fixed mold push plate 4 are separated, and the fixed mold first pull-out core 13 is pulled out from the inner side of the flanged portion of the workpiece 16 to realize the core pulling action of this portion; and in the process of the fixed mold first pull-out core 13 being pulled out from the workpiece 16, the fixed mold ejection core 14 is located above the flanged structure of the workpiece 16, which can prevent the workpiece 16 from moving together with the fixed mold first pull-out core 13, and ensure that the fixed mold first pull-out core 13 can be smoothly pulled out;
[0028] At this point, the workpiece is demoulded and ejected from the cavity using a push rod.
Claims
1. A mold capable of realizing multi-level mold extraction, comprising a fixed mold part and a movable mold part, wherein the fixed mold part comprises a fixed mold taking-up plate (1), below which a stripping plate (2), a fixed mold plate (3) and a fixed mold pushing plate (4) are sequentially arranged, and the movable mold part comprises a movable mold taking-up plate (5), above which a movable mold bottom plate (6) and a movable mold plate (7) are sequentially arranged, characterized in that: The movable die plate (7) is provided with an inclined guide column (8), the fixed die push plate (4) is movably connected with a slider (9), the slider (9) is provided with a guide groove matching the inclined guide column (8), the movable die plate (7) is further provided with a locking block (10) located outside the slider (9), and the contact surfaces between the locking block (10) and the slider (9) are both inclined surfaces. The movable mold base plate (6) is provided with a movable mold pre-extraction core (11). The fixed mold plate (3) is provided with a fixed mold gate core (12) and a fixed mold pre-extraction core (13). A fixed mold ejection core (14) is arranged in the fixed mold push plate (4), and a movable mold ejection core (15) is arranged in the movable mold plate (7); the fixed mold ejection core (14) is located above the slider (9), and the movable mold ejection core (15) is located below the slider (9). After injection molding, the top of the movable mold first pull core (11) contacts the inner wall of the workpiece (16), the bottom end surface of the fixed mold gate core (12) of the slider (9) and the inner side surface of the fixed mold first pull core (13) contact the outer wall of the workpiece (16), the end of the slider (9) contacts the undercut of the flange position of the workpiece (16), and the fixed mold ejection core (14) and the movable mold ejection core (15) contact the top and bottom ends of the flange position of the workpiece (16) respectively. A first elastic glue (17) is provided between the stripping plate (2) and the fixed die plate (3), a second elastic glue (18) is provided between the movable die bottom plate (6) and the movable die plate (7), a mold locker (19) is provided between the fixed die plate (3) and the fixed die push plate (4), and a limiting screw (20) is provided between the fixed die take-up plate (1) and the stripping plate (2).