Stripping plate ejection mold structure

Abstract

The utility model discloses a stripper plate ejection mold structure which comprises a front mold core, a rear mold core installed at the lower end of the front mold core, a middle stripper plate installed at the lower end of the rear mold core, an ejector rod fixing plate installed at the lower end of the middle stripper plate, and first ejector rod components connected to the two lower sides of the ejector rod fixing plate respectively. A second ejector rod component is connected between the middle stripper plate and the ejector rod fixing plate, a first auxiliary ejector block is connected to the side face of the ejector rod fixing plate, a second auxiliary ejector block is connected to the side face of the middle stripper plate, a third auxiliary ejector block is connected to the side face of the rear mold core, and the second auxiliary ejector block is connected into the third auxiliary ejector block. The first auxiliary ejector block is connected into the second auxiliary ejector block, a limiting column is arranged on the side face of the rear mold core, a limiting block is arranged on the side face of the middle stripper plate, the limiting column is connected with the limiting block, a product piece is arranged on the rear mold core, and an insert is arranged on the middle stripper plate. And through the middle stripper plate structure, the stress area of the ejection structure is effectively enlarged, and the demolding smoothness is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of die-casting machine, specifically relating to a stripping ejector mold structure. Background Technology

[0002] In die casting, the design of the mold structure has a crucial impact on the molding quality and demolding efficiency of the product. Especially when molding die-cast products with deep cavities, due to the complex product structure and small draft angle, the traditional single-point ejection method has obvious defects. Uneven ejection force distribution can easily cause product deformation, scratches, or even prevent the product from being demolded smoothly, seriously affecting the product qualification rate and production efficiency.

[0003] Existing mold structures generally use ejector pins that directly contact the product for ejection. The ejector pin structure is relatively simple, with a small ejection force-bearing area and a short force transmission path, making it difficult to achieve stable and uniform demolding action. Especially when dealing with large or complex products, this type of structure is prone to problems such as uneven ejection, product jamming, and force misalignment during demolding, leading to product sticking, warping, and even mold damage.

[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0005] In view of the technical problems mentioned in the background art, the purpose of this utility model is to provide a stripper ejector mold structure to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a ejector plate structure, comprising a front mold core, a rear mold core mounted at the lower end of the front mold core, a middle ejector plate mounted at the lower end of the rear mold core, an ejector pin fixing plate mounted at the lower end of the middle ejector plate, first ejector pin components connected to the lower two sides of the ejector pin fixing plate, a second ejector pin component connected between the middle ejector plate and the ejector pin fixing plate, a first auxiliary ejector block connected to the side of the ejector pin fixing plate, a second auxiliary ejector block connected to the side of the middle ejector plate, a third auxiliary ejector block connected to the side of the rear mold core, the second auxiliary ejector block being connected within the third auxiliary ejector block, the first auxiliary ejector block being connected within the second auxiliary ejector block, a limiting post provided on the side of the rear mold core, a limiting block provided on the side of the middle ejector plate, the limiting post and the limiting block being connected, a product part provided on the rear mold core, and an insert provided on the middle ejector plate.

[0007] Furthermore, the first auxiliary ejector block is fixedly connected to the side of the ejector pin fixing plate by fasteners, the second auxiliary ejector block is fixedly connected to the side of the middle ejector plate by fasteners, and the third auxiliary ejector block is fixedly connected to the side of the rear mold core by fasteners.

[0008] Furthermore, the inner side of the third auxiliary top block is recessed with a top block recess, and the upper end of the second auxiliary top block is provided with a connecting top block, which is connected in the top block recess, thereby connecting the second auxiliary top block and the third auxiliary top block.

[0009] Furthermore, the inner side of the second auxiliary top block is provided with a top block groove, and the upper end of the first auxiliary top block is provided with a top block connecting post, which is connected in the top block groove, thereby connecting the first auxiliary top block and the second auxiliary top block.

[0010] Furthermore, the limiting block is fixedly installed on the side of the middle plate by fasteners. A limiting slot is formed on the upper surface of the limiting block. The size of the limiting slot is larger than the size of the limiting post. The limiting post is limited and connected in the limiting slot.

[0011] Furthermore, mold feet are symmetrically connected to both sides of the front mold core, and connecting grooves are symmetrically recessed on both sides of the front mold core. Connecting sliders that are adapted to the connecting grooves are protruding on the lower side of the mold feet. The connecting sliders are slidably connected in the connecting grooves, thereby allowing the mold feet to be slidably connected to the side of the front mold core.

[0012] Furthermore, the inner sides of the connecting groove are symmetrically provided with reinforcing protrusions, which abut against the connecting slider.

[0013] This utility model mainly has the following beneficial effects: A rear mold core is installed at the lower end of the front mold core, a middle ejector plate is installed at the lower end of the rear mold core, an ejector pin fixing plate is installed at the lower end of the middle ejector plate, first ejector pin components are respectively connected to the lower two sides of the ejector pin fixing plate, a second ejector pin component is connected between the middle ejector plate and the ejector pin fixing plate, a first auxiliary ejector block is connected to the side of the ejector pin fixing plate, a second auxiliary ejector block is connected to the side of the middle ejector plate, and a third auxiliary ejector block is connected to the side of the rear mold core. The second auxiliary ejector block is connected to the third... In the auxiliary ejector block, the first auxiliary ejector block is connected to the second auxiliary ejector block. The side of the rear mold core is provided with a limiting post, and the side of the middle ejector plate is provided with a limiting block. The limiting post and the limiting block are connected. The rear mold core is provided with a product part, and the middle ejector plate is provided with an insert. The ejector plate ejector mold structure of this utility model effectively expands the force-bearing area of ​​the ejection structure through the middle ejector plate structure, avoiding product deformation caused by single-point concentrated demolding. The multi-level auxiliary ejector block structure design can realize a more flexible and stable force transmission process and improve the smoothness of demolding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall exploded structure of this utility model.

[0015] Figure 2 This is an exploded structural diagram of the first auxiliary top block, the second auxiliary top block, and the third auxiliary top block of this utility model.

[0016] Reference numerals: Front mold core 10; Rear mold core 20; Middle ejector plate 30; Ejector pin fixing plate 40; First ejector pin component 41; Second ejector pin component 50; First auxiliary ejector block 42; Second auxiliary ejector block 31; Third auxiliary ejector block 21; Limiting post 22; Limiting block 32; Product part 23; Insert 33; Ejector block recess 211; Connecting ejector block 311; Ejector block groove 312; Ejector block connecting post 421; Limiting slot 321; Mold foot 60; Connecting slide 11; Connecting slider 61; Reinforcing protrusion 111. Detailed Implementation

[0017] like Figures 1 to 2 As shown, a ejector plate ejection mold structure includes a front mold core 10, a rear mold core 20 mounted on the lower end of the front mold core 10, a middle ejector plate 30 mounted on the lower end of the rear mold core 20, an ejector pin fixing plate 40 mounted on the lower end of the middle ejector plate 30, first ejector pin components 41 connected to the lower two sides of the ejector pin fixing plate 40, a second ejector pin component 50 connected between the middle ejector plate 30 and the ejector pin fixing plate 40, and a first auxiliary ejector block 42 connected to the side of the ejector pin fixing plate 40. The rear mold core 20 is connected to a second auxiliary ejector block 31 on its side, and a third auxiliary ejector block 21 is connected to the side of the rear mold core 20. The second auxiliary ejector block 31 is connected to the third auxiliary ejector block 21, and the first auxiliary ejector block 42 is connected to the second auxiliary ejector block 31. The rear mold core 20 is provided with a limiting post 22 on its side, and the intermediate ejector plate 30 is provided with a limiting block 32 on its side. The limiting post 22 and the limiting block 32 are connected. The rear mold core 20 is provided with a product part 23, and the intermediate ejector plate 30 is provided with an insert 3. 3. During the die-casting production process, the working process of this mold structure is as follows: When the mold is closed, the front mold core 10 and the rear mold core 20 together form the product cavity, completing the die-casting process; when the mold is opened, the die-casting machine separates the front mold core 10 and the rear mold core 20 to the set stroke; the ejection mechanism is activated, and the first ejector rod component 41 pushes the ejector rod fixing plate 40 upward; the ejector rod fixing plate 40 drives the second ejector rod component 50 and the first auxiliary ejector block 42 on its side to move upward as a whole. The first auxiliary ejector block 42 pushes the second auxiliary ejector block 31, thereby transmitting force to the third auxiliary ejector block 21. Simultaneously, the rear mold core 20, the product part 23, and the limiting post 22 are also pushed upwards, and the product part 23 is ejected. When the limiting post 22 reaches the end of its stroke and contacts the limiting block 32, the ejection stops. During this process, the middle ejector plate 30, the insert 33, the limiting block 32, and the second auxiliary ejector block 31 simultaneously separate from the product cavity, achieving complete product demolding. The middle ejector plate structure effectively expands the force-bearing area of ​​the ejection structure, avoiding product deformation caused by concentrated demolding at a single point. The multi-level auxiliary ejector block structure design enables a more flexible and stable force transmission process, improving demolding smoothness. The limiting structure ensures precise and controllable ejection stroke, avoiding over-ejection or incomplete ejection.

[0018] In practical implementation, the first auxiliary ejector block 42 is fixedly connected to the side of the ejector pin fixing plate 40 by fasteners, the second auxiliary ejector block 31 is fixedly connected to the side of the middle ejector plate 30 by fasteners, and the third auxiliary ejector block 21 is fixedly connected to the side of the rear mold core 20 by fasteners. The structure is simple and the assembly is convenient and stable.

[0019] In practical implementation, the inner side of the third auxiliary top block 21 is provided with a top block recess 211, and the upper end of the second auxiliary top block 31 is provided with a connecting top block 311. The connecting top block 311 is connected in the top block recess 211, thereby connecting the second auxiliary top block 31 and the third auxiliary top block 21. The inner side of the second auxiliary top block 31 is provided with a top block groove 312, and the upper end of the first auxiliary top block 42 is provided with a top block connecting post 421. The top block connecting post 421 is connected in the top block groove 312, thereby connecting the first auxiliary top block 42 and the second auxiliary top block 31. The structure is simple and the connection is convenient.

[0020] In practical implementation, the limiting block 32 is fixedly installed on the side of the middle ejector plate 30 by fasteners. The upper surface of the limiting block 32 has a limiting slot 321. The size of the limiting slot 321 is larger than the size of the limiting post 22. The limiting post 22 is limited and connected in the limiting slot 321. In use, when the mold is in the ejection stage, when the middle ejector plate 30 drives the limiting block 32 to move, the limiting post 22 is inserted into the limiting slot 321. After reaching the set ejection stroke, the limiting post 22 abuts against the front end of the limiting slot 321, thereby limiting the stroke of the middle ejector plate 30 and the ejection structure to prevent over-blow or damage to the ejected product.

[0021] In practical implementation, mold feet 60 are symmetrically connected to both sides of the front mold core 10. Connecting grooves 11 are symmetrically recessed on both sides of the front mold core 10. Connecting sliders 61 that are adapted to the connecting grooves 11 are protruding on the lower side of the mold feet 60. The connecting sliders 61 are slidably connected in the connecting grooves 11, so that the mold feet 60 are slidably connected to the side of the front mold core 10. In use, this structure enables quick disassembly and assembly and convenient adjustment between the mold feet 60 and the front mold core 10, facilitates the transportation, maintenance and replacement of the mold, and effectively improves the assembly efficiency of the mold system.

[0022] In practical implementation, the inner sides of the connecting slide groove 11 are symmetrically provided with reinforcing protrusions 111. When the connecting slider 61 is connected to the connecting slide groove 11, the reinforcing protrusions 111 abut against the connecting slider 61, thereby making the connection between the mold foot 60 and the front mold core 10 more stable.

[0023] In summary, a rear mold core 20 is installed at the lower end of the front mold core 10, a middle ejector plate 30 is installed at the lower end of the rear mold core 20, and an ejector pin fixing plate 40 is installed at the lower end of the middle ejector plate 30. First ejector pin components 41 are connected to the lower two sides of the ejector pin fixing plate 40. A second ejector pin component 50 is connected between the middle ejector plate 30 and the ejector pin fixing plate 40. A first auxiliary ejector block 42 is connected to the side of the ejector pin fixing plate 40, a second auxiliary ejector block 31 is connected to the side of the middle ejector plate 30, and a third auxiliary ejector block 21 is connected to the side of the rear mold core 20. The second auxiliary ejector block 31 is connected to the third auxiliary ejector block 50. In the ejector block 21, the first auxiliary ejector block 42 is connected to the second auxiliary ejector block 31. The side of the rear mold core 20 is provided with a limiting post 22, and the side of the middle ejector plate 30 is provided with a limiting block 32. The limiting post 22 and the limiting block 32 are connected. The rear mold core 20 is provided with a product part 23, and the middle ejector plate 30 is provided with an insert 33. The ejector plate ejector mold structure of this utility model effectively expands the force-bearing area of ​​the ejection structure through the middle ejector plate structure, avoiding product deformation caused by single-point concentrated demolding. The multi-level auxiliary ejector block structure design can realize a more flexible and stable force transmission process and improve the smoothness of demolding.

Claims

1. A stripper-ejector die structure characterized by, It includes the front die (10), the lower end of the front die (10) is installed with the rear die (10), the lower end of the rear die (10) is installed with the middle stripping plate (30), the lower end of the middle stripping plate (30) is installed with the ejector rod fixed plate (40), the lower two sides of the ejector rod fixed plate (40) are connected with the first ejector rod part (41) respectively, the middle stripping plate (30) and the ejector rod fixed plate (40) are connected with the second ejector rod part (50), the side of the ejector rod fixed plate (40) is connected with the first auxiliary ejector block (42), the side of the middle stripping plate (30) is connected with the second auxiliary ejector block (31), the side of the rear die (20) is connected with the third auxiliary ejector block (21), the second auxiliary ejector block (31) is connected in the third auxiliary ejector block (21), the first auxiliary ejector block (42) is connected in the second auxiliary ejector block (31), the side of the rear die (20) is provided with the limiting column (22), the side of the middle stripping plate (30) is provided with the limiting block (32), the limiting column (22) and the limiting block (32) are connected, the rear die (20) is provided with the product part (23), and the middle stripping plate (30) is provided with the insert part (33).

2. The stripper ejection mold structure according to claim 1, characterized by, The first auxiliary ejector block (42) is fixedly connected to the side of the ejector rod fixed plate (40) through fasteners, the second auxiliary ejector block (31) is fixedly connected to the side of the middle stripping plate (30) through fasteners, and the third auxiliary ejector block (21) is fixedly connected to the side of the rear die (20) through fasteners.

3. The stripper ejection mold structure according to claim 2, characterized by, The inner side of the third auxiliary ejector block (21) is concave and provided with an ejector block recess (211), the upper end of the second auxiliary ejector block (31) is provided with a connecting ejector block (311), and the connecting ejector block (311) is connected in the ejector block recess (211), so that the second auxiliary ejector block (31) and the third auxiliary ejector block (21) are connected.

4. The stripper ejection mold structure according to claim 3, characterized by, The inner side of the second auxiliary ejector block (31) is concave and provided with an ejector block groove (312), the upper end of the first auxiliary ejector block (42) is provided with an ejector block connecting column (421), and the ejector block connecting column (421) is connected in the ejector block groove (312), so that the first auxiliary ejector block (42) and the second auxiliary ejector block (31) are connected.

5. The stripper ejection mold structure according to claim 1, wherein The limiting block (32) is fixedly installed on the side of the middle stripping plate (30) through fasteners, the upper surface of the limiting block (32) is provided with a limiting slot (321), the size of the limiting slot (321) is greater than the size of the limiting column (22), and the limiting column (22) is limitingly connected in the limiting slot (321).

6. The stripper ejection mold structure of claim 1, wherein, The two sides of the front die (10) are symmetrically connected with die feet (60), the two side surfaces of the front die (10) are symmetrically concave and provided with connecting sliding grooves (11), the lower side surface of the die foot (60) is convexly provided with a connecting sliding block (61) matched with the connecting sliding groove (11), and the connecting sliding block (61) is slidingly connected in the connecting sliding groove (11), so that the die foot (60) is slidingly connected to the side surface of the front die (10).

7. The stripper ejection mold structure according to claim 6, characterized by, The inner two sides of the connecting sliding groove (11) are symmetrically convex and provided with reinforcing protrusions (111), and the reinforcing protrusions (111) abut against the connecting sliding block (61).

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