Mould for two-time ejection demoulding

Abstract

The utility model discloses a two-time ejection demolding mold which comprises a front mold panel, a stripper plate is arranged on the lower surface of the front mold panel, a push plate is arranged on the lower surface of a front mold frame, an ejector rod is connected to the lower surface of a bearing plate in a penetrating mode, a sliding block is fixedly connected to the lower surface of the ejector rod, and the sliding block is fixedly connected to the lower surface of the ejector rod. The lower surface of the sliding block is provided with an ejector pin panel, the upper surface of the ejector pin panel is provided with a groove, the inner surface of the bearing plate is fixedly connected with a push block, and the push block is clamped with the groove of the ejector pin panel. By improving the mold for secondary ejection demolding, the mold has the advantages that demolding is rapid, the demolding time is shortened, and the production efficiency is improved; when the ejector pin panel performs ejection movement, the first ejection is finished when the push block ejects the sliding block to slide towards the movement direction by a limiting distance, and then the ejector pin panel performs second ejection, so that two-time ejection demolding can be realized, automatic demolding is realized, manual demolding is not needed, and the production efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly relates to a mold for secondary ejection and demolding. Background Art

[0002] In modern production, reasonable processing technology, efficient equipment, and advanced molds are three essential important factors. In particular, molds play an important role in realizing the processing technology requirements of materials, the usage requirements between plastics, and the shape design. Only by installing molds for automated production can efficient fully automated equipment play its role. The production and update of products are premised on the manufacture and update of molds. Due to the large variety and output demand of workpieces, higher and higher requirements are put forward for molds, thus promoting the continuous development of molds.

[0003] Existing molds all adopt a single or multi-component ejection mechanism, and their ejection actions are all completed at one time. However, due to the special new installation of the finished product or the requirements during mass production, if the finished product remains in the mold after one ejection, or the mold cannot be automatically detached, manual demolding is required, which increases the demolding time of the mold and results in low processing efficiency. For example, the Chinese patent discloses "A secondary ejection structure for a mold facilitating demolding", and its application number is: "CN202020138370.2", which includes: a support base, a first ejector rod, a second ejector rod, a first air pipe, a second air cylinder, a second air pipe, and a first air cylinder. The first ejector rod is assembled inside the lower mold core, and the second ejector rod is assembled inside the first ejector rod. Its device structure is single, and other structures need to be added, resulting in increased costs and limited applicability. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a mold for secondary ejection and demolding. Through the improvement of the mold for secondary ejection and demolding, the device has the advantages of rapid demolding, shortened demolding time, and improved production efficiency. When the ejector plate moves for ejection, when the push block pushes open the slider and slides a limited distance in the moving direction, the first ejection ends, and then the ejector plate ejects for the second time, realizing two-stage ejection and demolding, achieving automated demolding without manual demolding, and effectively improving production efficiency.

[0005] The utility model also provides a mold with the above-mentioned secondary ejection and demolding, including: a front mold panel, a stripper plate is arranged on the lower surface of the front mold panel, a front mold frame is fixedly connected to the lower surface of the stripper plate, the inner surface of the front mold frame is hollow, a front mold core is inlaid on the inner surface of the front mold frame, a second set screw is arranged on the lower surface of the front mold frame, and a first set screw is arranged on the upper surface of the front mold panel; through the mutual cooperation between the above-mentioned parts, it has the advantages of rapid demolding, shortened demolding time, and improved production efficiency.

[0006] A ejector plate is provided on the lower surface of the front mold frame. A bearing plate is provided on the lower surface of the ejector plate. A thimble is connected through the lower surface of the bearing plate. A slider is fixedly connected to the lower surface of the thimble. A thimble panel is provided on the lower surface of the slider. A groove is provided on the upper surface of the thimble panel. A push block is fixedly connected to the inner surface of the bearing plate. The push block is engaged with the groove of the thimble panel. Through the mutual cooperation between the above parts, when the thimble panel moves upward for ejection, the push block pushes the slider to slide a limited distance in the moving direction, and the first ejection ends. Then, the thimble panel ejects for the second time, enabling two-stage ejection and demolding, and realizing automatic demolding.

[0007] For a mold with two-stage ejection and demolding according to the present invention, a thimble bottom is provided on the lower surface of the thimble panel. A rear mold panel is fixedly connected to the lower surface of the thimble bottom. Through the mutual cooperation between the above parts, it is convenient for connection.

[0008] For a mold with two-stage ejection and demolding according to the present invention, a mold leg is fixedly connected to the upper surface of the rear mold panel. The upper surface of the mold leg is fixedly connected to the bearing plate. Through the mutual cooperation between the above parts, it is used to support the mold and adjust the height of the mold, facilitating the control of the stroke of the thimble panel and the ejector plate.

[0009] For a mold with two-stage ejection and demolding according to the present invention, a third thimble screw is provided on the upper surface of the ejector plate. The ejector plate is fixedly connected to the bearing plate through the third thimble screw. Through the mutual cooperation between the above parts, it is convenient for fixing the ejector plate and the bearing plate, and also convenient for disassembly.

[0010] For a mold with two-stage ejection and demolding according to the present invention, an opening is provided on the upper surface of the ejector plate, and a rubber plug is fixedly connected to the inner surface of the opening. Through the mutual cooperation between the above parts, it prevents the leakage of liquid or gas in the mold and plays a sealing role.

[0011] For a mold with two-stage ejection and demolding according to the present invention, a slot is provided on the upper surface of the ejector plate, and a return pin bumper is inlaid on the inner surface of the slot. Through the mutual cooperation between the above parts, it guides the thimble panel during ejection to prevent the thimble from damaging the front mold.

[0012] For a mold with two-stage ejection and demolding according to the present invention, a rear mold core is inlaid on the inner surface of the ejector plate. A first rear mold insert and a second rear mold insert are provided on the upper surface of the rear mold core. Through the mutual cooperation between the above parts, it is convenient to disassemble the mold, simplifies the mold structure, improves efficiency, and is conducive to exhaust gas, avoiding problems such as air entrapment and burning.

[0013] A mold for secondary ejection and demolding according to the present utility model, wherein the front mold panel is fixedly connected to the stripping plate through the first setscrew, and the front mold frame is fixedly connected to the stripping plate through the second setscrew. Through the mutual cooperation between the above parts, it is convenient for the stripping plate to bear the concentrated stress generated by the molded part during the production process.

[0014] Beneficial effects

[0015] Compared with the prior art, through the improvement of the mold for secondary ejection and demolding, the present utility model has the advantages of rapid demolding, shortened demolding time, and improved production efficiency. When the ejector pin panel moves for ejection, the first ejection ends when the push block pushes open the slider and slides a limited distance in the moving direction. Then, the ejector pin panel ejects for the second time, enabling two-stage ejection and demolding, realizing automatic demolding without manual demolding, and effectively improving production efficiency. Description of the drawings

[0016] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0017] Figure 1 It is the overall structure diagram of the mold for secondary ejection and demolding of the present utility model;

[0018] Figure 2 It is the internal structure diagram of the mold for secondary ejection and demolding of the present utility model;

[0019] Figure 3 It is the connection structure diagram of the front mold panel of the mold for secondary ejection and demolding of the present utility model;

[0020] Figure 4 It is the internal connection structure diagram of the front mold core of the mold for secondary ejection and demolding of the present utility model;

[0021] Legend description:

[0022] 1. Front mold panel; 2. Stripping plate; 3. Front mold frame; 4. First setscrew; 5. Front mold core; 6. Second setscrew; 7. Rear mold panel; 8. Bottom of ejector pin; 9. Ejector pin panel; 10. Mold feet; 11. Support plate; 12. Push plate; 13. Slide block; 14. Ejector rod; 15. Push block; 16. Third setscrew; 17. Rubber plug; 18. Return pin block; 19. First rear mold insert; 20. Second rear mold insert; 21. Rear mold core. Detailed implementation manners

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be construed as a limitation on the protection scope of the present utility model.

[0024] Referring to Figures 1-4 , an embodiment of the utility model is a mold for secondary ejection and demolding, which includes: a front mold panel 1, the front mold panel 1 is fixedly connected to a stripper plate 2 through a first set screw 4, and a front mold frame 3 is fixedly connected to the stripper plate 2 through a second set screw 6, which is convenient for the stripper plate 2 to bear the concentrated stress generated by the formed part during the production process. A stripper plate 2 is arranged on the lower surface of the front mold panel 1, a front mold frame 3 is fixedly connected to the lower surface of the stripper plate 2, the inner surface of the front mold frame 3 is hollow, a front mold core 5 is embedded in the inner surface of the front mold frame 3, a second set screw 6 is arranged on the lower surface of the front mold frame 3, and a first set screw 4 is arranged on the upper surface of the front mold panel 1, which has the advantages of rapid demolding, shortened demolding time, and improved production efficiency.

[0025] A push plate 12 is arranged on the lower surface of the front mold frame 3, a rear mold core 21 is embedded in the inner surface of the push plate 12, a first rear mold insert 19 and a second rear mold insert 20 are arranged on the upper surface of the rear mold core 21, which is convenient for splitting the mold, simplifies the mold structure, improves efficiency, and is beneficial for exhaust, avoiding problems such as air entrapment and burning. A slot is arranged on the upper surface of the push plate 12, and a return pin block 18 is embedded in the inner surface of the slot, so as to guide the ejector pin panel 9 during ejection to prevent the ejector pin from damaging the front mold. An opening is arranged on the upper surface of the push plate 12, and a rubber plug 17 is fixedly connected to the inner surface of the opening, which prevents the leakage of liquid or gas in the mold and plays a sealing role. A third set screw 16 is arranged on the upper surface of the push plate 12, and the push plate 12 is fixedly connected to a bearing plate 11 through the third set screw 16, which is convenient for the fixation of the push plate 12 and the bearing plate 11 and is also convenient for disassembly. A bearing plate 11 is arranged on the lower surface of the push plate 12, a ejector rod 14 penetrates through the lower surface of the bearing plate 11, a slider 13 is fixedly connected to the lower surface of the ejector rod 14, an ejector pin panel 9 is arranged on the lower surface of the slider 13, an ejector pin bottom 8 is arranged on the lower surface of the ejector pin panel 9, and a rear mold panel 7 is fixedly connected to the lower surface of the ejector pin bottom 8, which is convenient for connection. A mold foot 10 is fixedly connected to the upper surface of the rear mold panel 7, and the upper surface of the mold foot 10 is fixedly connected to the bearing plate 11, which is used to support the mold and adjust the height of the mold, facilitating the control of the stroke of the ejector pin panel 9 and the push plate 12. A groove is arranged on the upper surface of the ejector pin panel 9, a push block 15 is fixedly connected to the inner surface of the bearing plate 11, and the push block 15 is engaged with the groove of the ejector pin panel 9. When the ejector pin panel 9 moves upward, the push block 15 pushes the slider 13 to slide a limited distance in the moving direction, and the first ejection ends. Then, the ejector pin panel 9 ejects for the second time, and two-stage ejection and demolding can be realized, achieving automatic demolding.

[0026] Working principle: When using this device, first align the front mold panel 1 with the carrier plate 11 through the guide pillars. Then, inject the molten plastic into the cavity through the injection port. After molding, lower the front mold panel 1. When the front mold panel 1 and the carrier plate 11 are separated, due to the action of the spring, the ejector pin panel 9 is lifted upward, so that the ejector rod 14 lifts the slider 13 upward. At the same time, the ejector pin lifts the plastic part upward through the action of the spring, so that the plastic part is separated from the rear mold core 21. Finally, take out the plastic part and then work again. Through two-stage demolding, it is beneficial for the device to demold quickly, shorten the demolding time, and improve production efficiency. When the ejector pin panel 9 ejects and moves, the push block 12 pushes the slider 13 to slide a limited distance in the moving direction, and the first-stage ejection ends. Then, the ejector pin panel 9 ejects for the second time, and two-stage ejection demolding can be realized, achieving automatic demolding without manual demolding, which can effectively improve production efficiency.

[0027] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A mold for secondary ejection and demolding, characterized in that, Including: A front mold panel (1), a stripper plate (2) is arranged on the lower surface of the front mold panel (1), a front mold frame (3) is fixedly connected to the lower surface of the stripper plate (2), the inner surface of the front mold frame (3) is hollow, a front mold core (5) is inlaid on the inner surface of the front mold frame (3), a second set screw (6) is arranged on the lower surface of the front mold frame (3), and a first set screw (4) is arranged on the upper surface of the front mold panel (1); A push plate (12) is arranged on the lower surface of the front mold frame (3), a bearing plate (11) is arranged on the lower surface of the push plate (12), a ejector rod (14) is connected through the lower surface of the bearing plate (11), a slider (13) is fixedly connected to the lower surface of the ejector rod (14), a ejector pin panel (9) is arranged on the lower surface of the slider (13), a groove is arranged on the upper surface of the ejector pin panel (9), a push block (15) is fixedly connected to the inner surface of the bearing plate (11), and the push block (15) is clamped with the groove of the ejector pin panel (9).

2. The mold for secondary ejection and demolding according to claim 1, characterized in that, A ejector pin bottom (8) is arranged on the lower surface of the ejector pin panel (9), and a rear mold panel (7) is fixedly connected to the lower surface of the ejector pin bottom (8).

3. The mold for secondary ejection and demolding according to claim 2, wherein, A mold leg (10) is fixedly connected to the upper surface of the rear mold panel (7), and the upper surface of the mold leg (10) is fixedly connected to the bearing plate (11).

4. A mold for secondary ejection and demolding according to claim 1, characterized in that, A third set screw (16) is arranged on the upper surface of the push plate (12), and the push plate (12) is fixedly connected to the bearing plate (11) through the third set screw (16).

5. A mold for secondary ejection and demolding according to claim 1, characterized in that, An opening is arranged on the upper surface of the push plate (12), and a rubber plug (17) is fixedly connected to the inner surface of the opening.

6. The mold for secondary ejection and demolding according to claim 1, characterized in that, A slot is arranged on the upper surface of the push plate (12), and a return pin striker (18) is inlaid on the inner surface of the slot.

7. A mold for secondary ejection and demolding according to claim 1, characterized in that, A rear mold core (21) is inlaid on the inner surface of the push plate (12), and a first rear mold insert (19) and a second rear mold insert (20) are arranged on the upper surface of the rear mold core (21).

8. A mold for secondary ejection and demolding according to claim 1, characterized in that, The front mold panel (1) is fixedly connected to the stripper plate (2) through the first set screw (4), and the front mold frame (3) is fixedly connected to the stripper plate (2) through the second set screw (6).

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