Secondary demolding structure for stacked sliding blocks
By using a stacked slider secondary demolding structure and two sets of ejector plates to achieve step-by-step ejection, the problems of complex mold structure and long production cycle are solved, product capacity is increased and costs are reduced.
Patent Information
- Application Number
- CN202520417007.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional molds are complex in structure, have long production cycles, and are costly when dealing with products that have two different undercut features on the side and require sequential demolding.
The system adopts a stacked slider secondary demolding structure, which achieves step-by-step ejection through two sets of ejector plates. By utilizing the gap between the slider ejector block and the upper slider, the lower mold insert is ejected first, followed by the upper slider, which simplifies the structure and reduces costs.
This has enabled high production capacity and cost savings, simplified the production process, and reduced the production cycle.
Smart Images
Figure CN223803023U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a mould especially relates to a secondary stripping structure of stack slide block. BACKGROUND
[0002] Mould, industrial production is used to injection, blow molding, extrusion, die casting or forging pressure forming, smelting, stamping etc. In short, the mould is used to make the tool of forming article, and the tool is formed by various parts, and different moulds are formed by different parts. In the stripping process of the mould, the mould reverse buckle or the first and second stripping parts often appear due to the particularity of the product shape. SUMMARY
[0003] The utility model provides a structure simple, shorten production cycle, improve product's capacity, save the cost's secondary stripping structure of stack slide block, solve the stripping device of step by step reverse buckle structure in prior art, the technical problem of complex structure, long production cycle, high cost.
[0004] The above technical problem of the utility model is solved by the following technical scheme: a secondary stripping structure of stack slide block, including lower die plate, the upper slide block and lower slide block arranged in the lower die plate, the lower die plate still is equipped with lower die core and lower die insert, the lower die insert is located in the lower die core, and the lower die core is located on one side of the upper slide block and the lower slide block, the first needle plate structure and the second needle plate structure are arranged below the lower die plate, the other end of the shovel is fixed on the first needle plate structure, and the other end of the shovel is connected with the lower slide block, one end of the needle is fixed on the second needle plate structure, and the other end of the needle is connected with the lower die insert, one end of the slide block top block is also fixed on the second needle plate structure, the other end of the slide block top block is located below the upper slide block, and the delay gap is arranged between the slide block top block and the upper slide block. Two sets of needle plate structures are adopted, the different reverse buckles can be sequentially and step by step ejected, the gap is arranged between the slide block top block and the upper slide block, the needle ejects the lower die insert first when the second needle plate structure moves, then the slide block top block contacts the upper slide block to eject the upper slide block, so that the sequential ejection step is completed, the lower slide block, the lower die insert and then the upper slide block are ejected.
[0005] As preferred, the first ejector plate structure comprises a first upper ejector plate and a first lower ejector plate, one end of the excavator is fixed on the first upper ejector plate by bolts, the first ejector plate structure is connected with an oil cylinder driving part, and the oil cylinder driving part is located at the side of the lower die plate. The ejector plate structure is completed by two ejector plates, so that the excavator fixed in the first upper ejector plate is packaged by the first lower ejector plate, the structure is simpler, the oil cylinder is located at the side of the lower die plate, which does not affect the design of the lower die plate, and the first ejector plate structure can be conveniently driven.
[0006] As preferred, the first ejector plate structure comprises a first upper ejector plate and a first lower ejector plate, one end of the excavator is fixed on the first upper ejector plate by bolts, the first ejector plate structure is connected with an oil cylinder driving part, and the oil cylinder driving part is located at the side of the lower die plate. The ejector plate structure is completed by two ejector plates, so that the excavator fixed in the first upper ejector plate is packaged by the first lower ejector plate, the structure is simpler, the oil cylinder is located at the side of the lower die plate, which does not affect the design of the lower die plate, and the first ejector plate structure can be conveniently driven.
[0007] As preferred, the second ejector plate structure comprises a second upper ejector plate and a second lower ejector plate, the second upper ejector plate is provided with an ejector pin limiting hole and a sliding block top block limiting hole, and the second lower ejector plate packages the ejector pin limiting hole and the sliding block top block limiting hole.
[0008] As preferred, the shape of the ejector pin limiting hole is the same as the shape of the end of the ejector pin, the ejector pin limiting hole is T-shaped, the shape of the sliding block top block limiting hole is the same as the shape of the end of the sliding block top block, and the shape of the sliding block top block limiting hole is L-shaped.
[0009] As preferred, the second ejector plate structure is connected with an injection molding machine ejector pin, and the injection molding machine ejector pin drives the second ejector plate structure to move up and down. The second ejector plate structure is directly driven by the injection molding machine ejector pin, which reduces the cost and improves the production efficiency.
[0010] As preferred, the excavator and the lower sliding block are in contact through a slope, and the contact surface between the sliding block top block and the upper sliding block is a slope.
[0011] As preferred, upper sliding block pressing strips are arranged on both sides of the upper sliding block, and lower sliding block pressing strips are arranged on both sides of the lower sliding block.
[0012] As preferred, a first limiting block is mounted on the upper surface of the first ejector plate structure, and the first limiting block is located between the lower die plate and the first ejector plate structure. The end point of the movement of the first ejector plate structure is limited to prevent interference.
[0013] As preferred, a second limiting block is mounted on the upper surface of the second ejector plate structure, and the second limiting block is located between the first ejector plate structure and the second ejector plate structure. The end point of the movement of the second ejector plate structure is limited to prevent interference.
[0014] Therefore, the secondary demolding structure of the stacked slide block has the following advantages: simple structure, only one oil cylinder is needed, and the additional step driving directly uses an injection molding part top rod, and the secondary ejection is completed when the injection molding part moves; simple processing technology, high product capacity, and overall cost saving. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a perspective view of the mold opening of the secondary demolding structure of the stacked slide block.
[0016] Figure 2 is Figure 1 a sectional view.
[0017] Figure 3 is a perspective view of the mold clamping.
[0018] Figure 4 is Figure 3 a sectional view.
[0019] Figure 5 is Figure 1 a perspective view after removing the lower mold plate, the oil cylinder part, and the first and second slide block pressing strips.
[0020] Figure 6 is Figure 1 a perspective view of the lower mold core, the lower mold insert, and the ejector pin in the secondary demolding structure of the stacked slide block.
[0021] Figure 7 is Figure 1 a perspective view of the upper and lower slide blocks and the shovel in cooperation. DETAILED DESCRIPTION
[0022] The technical solution of the utility model will be further specifically described below through examples and in combination with the drawings.
[0023] Example:
[0024] As Figure 1 and 2 and 3 and 4 and 5, a secondary demolding structure of a stacked slide block includes a lower mold plate 1, an oil cylinder 4 is installed on one side of the lower mold plate 1. An upper slide block 10 and a lower slide block 11 are arranged on the lower mold plate 1, upper slide block pressing strips 19 are installed on both sides of the upper slide block 10, and lower slide block pressing strips 20 are installed on both sides of the lower slide block 11. The upper slide block pressing strips 19 and the lower slide block pressing strips 20 are fixed on the lower mold plate 1. An inclined cavity is arranged in the lower slide block 11, one end of a shovel 9 is inserted into the cavity, and the shovel 9 is connected to the lower slide block 11 through an inclined surface. A slide block ejector pin 8 is arranged below the upper slide block 10, the upper end surface of the slide block ejector pin 8 is an inclined surface 22, the position where the upper slide block 10 is connected to the slide block ejector pin is also an inclined surface 21, and in the initial state, there is a delay gap 23 between the slide block ejector pin 8 and the upper slide block 10 (as shown in Figure 7As shown).
[0025] As shown, Figure 6 The lower die core 18 is fixed in the lower die plate 1, and the lower die insert 5 is installed in the lower die core 18. The lower end of the lower die insert 5 is connected to one end of the ejector pin 7.
[0026] The first ejector plate structure 2 and the second ejector plate structure 3 are arranged below the lower die plate 1 in sequence. The first limiting block 12 is fixed on the upper surface of the first ejector plate structure 2 by screws, and is located between the lower die plate 1 and the first ejector plate structure 2. The second limiting block 13 is fixed on the upper surface of the second ejector plate structure 3 by screws, and is located between the second ejector plate structure 3 and the first ejector plate structure 2. The first ejector plate structure 2 is connected to the oil cylinder 4, and is driven to move up and down by the oil cylinder 4.
[0027] The first ejector plate structure 2 includes the first upper ejector plate 14 and the first lower ejector plate 15. The shovel 9 extends into the first upper ejector plate 14 through the lower die plate 1, and then the end of the shovel is fixed on the first upper ejector plate 14 by the bolts passing through the first lower ejector plate 15.
[0028] The second ejector plate structure 3 includes the second upper ejector plate 16 and the second lower ejector plate 17. The second upper ejector plate 16 is provided with ejector pin limiting holes and slider block limiting holes. The shape of the ejector pin limiting hole is the same as the shape of the end of the ejector pin, and the ejector pin limiting hole is T-shaped. The shape of the slider block limiting hole is the same as the shape of the end of the slider block, and the shape of the slider block limiting hole is L-shaped. After the ejector pin and the slider block are installed on the second upper ejector plate 16, the second lower ejector plate 17 is fixed below the second upper ejector plate 16, thereby completing the fixing of the ends of the ejector pin 7 and the slider block 8. The first lower ejector plate 17 is connected to the injection molding machine ejector rod below through the ejector rod 6, and the injection molding machine ejector rod drives the second ejector plate structure 3 to move up and down.
[0029] In use, the mold opening state is as follows:
[0030] The injection molding machine drives the upper mold part and the lower mold part to separate and open, the oil cylinder pulls the first upper ejector plate and the first lower ejector plate to eject, the first limiting block limits and drives the shovel to move upward, the shovel slides upward through the inclined surface to push the lower slider block to separate from the reverse buckle, and then the injection molding machine ejector rod ejects the second upper ejector plate and the second lower ejector plate. The second ejector plate structure is limited by the second limiting block and drives the ejector pin and the slider block to move upward. Since the ejector pin is directly in contact with the lower die insert, the movement of the second ejector plate structure first ejects the lower die insert and the product from the reverse buckle. Since there is a delay gap between the slider block and the upper slider block, after the reverse buckle is ejected, the slider block pushes the upper slider block to separate from the entire reverse buckle structure, and the entire product is completely ejected. The finished product is taken out.
[0031] The mold closing state is as follows:
[0032] The lower mold insert is manually placed into the lower mold core, the second upper ejector plate and the second lower ejector plate are retracted to the bottom, and the ejector pins and the slider blocks are also moved to the bottom. The oil cylinder drives the first upper ejector plate and the first lower ejector plate to the bottom, and at the same time drives the shovel. The shovel drives the lower slider to slide to the bottom, and the lower mold insert is flatly sealed with glue. The upper mold part and the lower mold part are completely closed, and injection molding is performed. The cycle is repeated to produce.
[0033] The specific embodiments described herein are merely illustrative of the principles of the application. Various modifications or changes in addition or substitution to the described specific embodiments can be made by those skilled in the art without departing from the spirit of the application or exceeding the scope of the appended claims.
Claims
1. A stacker slide block secondary demolding structure comprising a lower mold plate, characterized in that: The upper and lower sliders are arranged in the lower mold plate, and the lower mold core and the lower mold insert are arranged in the lower mold plate, the lower mold insert is located in the lower mold core, and the lower mold core is located on one side of the upper and lower sliders; the first and second ejector plate structures are arranged below the lower mold plate, the other end of the shovel is fixed on the first ejector plate structure, the other end of the shovel is connected with the lower slider, one end of the ejector pin is fixed on the second ejector plate structure, the other end of the ejector pin is connected with the lower mold insert, one end of the slider lifting block is also fixed on the second ejector plate structure, the other end of the slider lifting block is located below the upper slider, and a delay gap is arranged between the slider lifting block and the upper slider.
2. The stacker slider secondary ejection structure according to claim 1, characterized by: The first ejector plate structure comprises a first upper ejector plate and a first lower ejector plate, one end of the shovel is fixed on the first upper ejector plate through bolts, and the first ejector plate structure is connected with the oil cylinder driving part, and the oil cylinder driving part is located on the side surface of the lower mold plate.
3. The stacker slider secondary ejection structure according to claim 1, characterized by: The first ejector plate structure is provided with an ejector pin through hole and a slider lifting block through hole, the ejector pin through hole is matched with the ejector pin gap, and the slider lifting block through hole is matched with the slider lifting block gap.
4. The stacker slider secondary ejection structure according to claim 1, characterized by: The second ejector plate structure comprises a second upper ejector plate and a second lower ejector plate, the second upper ejector plate is provided with an ejector pin limiting hole and a slider lifting block limiting hole, and the second lower ejector plate encapsulates the ejector pin limiting hole and the slider lifting block limiting hole.
5. The stacker slider secondary ejection structure according to claim 4, characterized by: The shape of the ejector pin limiting hole is the same as the shape of the end of the ejector pin, the ejector pin limiting hole is T-shaped, the shape of the slider lifting block limiting hole is the same as the shape of the end of the slider lifting block, and the shape of the slider lifting block limiting hole is L-shaped.
6. The stacker slider secondary ejection structure according to any one of claims 1 to 5, characterized by: The second ejector plate structure is connected with the injection molding machine ejector pin, and the injection molding machine ejector pin drives the second ejector plate structure to move up and down.
7. The structure according to any one of claims 1 to 5, wherein: The shovel is in contact with the lower slider through a slope, and the contact surface between the slider lifting block and the upper slider is a slope.
8. The structure according to any one of claims 1 to 5, wherein: Upper slider pressing strips are arranged on both sides of the upper slider, and lower slider pressing strips are arranged on both sides of the lower slider.
9. The structure according to any one of claims 1 to 5, wherein: A first limiting block is mounted on the upper surface of the first ejector structure, and the first limiting block is located between the lower mold plate and the first ejector plate structure.
10. The structure according to any one of claims 1 to 5, wherein: A second limiting block is mounted on the upper surface of the second ejector plate structure, and the second limiting block is located between the first ejector plate structure and the second ejector plate structure.