Mould structure capable of ensuring stability of ejection size of product
By designing a mold structure including thimble, pallet and rear draw insert, the problem that the existing mold structure cannot ensure the stability of the product ejection dimensionality, and the improvement of product dimensional stability and production pass rate is achieved.
Patent Information
- Application Number
- CN202420566105.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-22
AI Technical Summary
The existing mold structure cannot effectively ensure the stability of the product ejection dimension, resulting in high production failure rate and increased mold modification costs.
A mold structure including a thimble base plate, a thimble panel, a thimble, a pallet, a rear draw insert and a B-plate is designed. By setting a support surface and a rear draw insert, the local stress of the product is evenly distributed to ensure the stability of the product when ejected.
The stability of the product ejection dimension is achieved, the production failure rate and mold modification cost are reduced, and the dimensional stability and production pass rate of the product are improved.
Smart Images
Figure CN222681603U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a mold structure that ensures stable ejection dimensions of products. Background Art
[0002] After the mold product is formed, it needs to be demolded. Products with large local demolding forces often have unstable product dimensions and need to frequently modify the mold adjustment dimensions. Injection molding production cannot produce products with stable and qualified dimensions because the product is subjected to uneven local forces and will be deformed locally due to factors such as molding adjustment, machine, and mold status. If the dimensions can be stabilized, it can not only save the mold modification cost, but also improve the production defect rate.
[0003] Product picture below Figure 1 As shown, the product is partially a deep cavity structure, and there are multiple long bones 01 without lateral support inside the deep cavity, and there are thinner and higher flat bones 02 on the long bones 01. The existing technology is a conventional back-drawn insert with ejector pin ejection, such as Figure 2 As shown in the figure, due to the high bone position and large local force on the bone position, the local support of the ejector pin when the insert is withdrawn cannot prevent the product bone position from deformation, and the size of the product is unqualified after ejection. The conventional structure can only ensure that the overall structure has no problem in demolding, but cannot ensure the dimensional stability of the internal long bone position 01 and the flat bone 02, which affects the defective rate and increases the cost of mold modification and production defects.
[0004] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a mold structure that ensures the stability of the product ejection size. Utility Model Content
[0005] The main technical problem solved by the utility model is to provide a mold structure that ensures the stability of the ejection size of the product, solves the problem of unstable ejection size of the product, and greatly improves the product size stability and the production qualification rate.
[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: providing a mold structure that ensures the stability of the ejection size of the product, the mold structure that ensures the stability of the ejection size of the product includes an ejector base plate, an ejector panel, an ejector, a support plate, a first rear draw-out insert, a second rear draw-out insert, a B plate and a rear mold core, the ejector base plate is installed with an ejector panel, the ejector panel is inserted with an ejector opposite to the product, a support plate is arranged above the ejector panel, the first rear draw-out insert opposite to the deep cavity of the product and the second rear draw-out insert opposite to the flat strip bone of the product are installed on the support plate, the second rear draw-out insert passes through the first rear draw-out insert, a B plate is arranged above the support plate, and the rear mold core is installed above the B plate.
[0007] Preferably, the first rear draw-out insert and the second rear draw-out insert are both provided with a support surface for supporting the flat bone on their upper parts.
[0008] Preferably, the support surface is configured to conform to the flat bone.
[0009] Preferably, the supporting surface near the root of the flat bone is rounded.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] The second rear draw-out insert provides a support surface for the flat bone. When the slide plate is opened, this insert is drawn out first to remove the product sticking force.
[0012] The first rear-drawn insert supports the bone position, so that the product is evenly stressed locally during demoulding, which can stabilize the product for ejection and storage, save mold modification costs, and improve production defect rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the product structure.
[0014] Figure 2 It is a schematic diagram of the existing conventional die drawing structure.
[0015] Figure 3 A schematic diagram of a mold structure that ensures stable ejection dimensions of the product.
[0016] Figure 4 This is a partial enlarged view of a mold structure that ensures the stability of the product ejection size.
[0017] Figure 5 It is a mold opening state that ensures the stable ejection size of the product. Figure 1 .
[0018] Figure 6 It is a mold opening state that ensures the stable ejection size of the product. Figure 2 .
[0019] Figure 7 This is a demoulding state diagram of a mold structure that ensures the stable ejection size of the product.
[0020] Among them, 01, long bone position, 02, flat bone, 1, ejector base plate, 2, ejector panel, 3, ejector, 4, support plate, 5, first rear pull-out insert, 6, second rear pull-out insert, 60, supporting surface, 7, B plate, 8, rear mold core. DETAILED DESCRIPTION
[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0022] See also Figures 1 to 4 , the utility model embodiment includes:
[0023] A mold structure for ensuring stable ejection dimensions of a product, the mold structure for ensuring stable ejection dimensions of a product comprising an ejector base plate 1, an ejector panel 2, an ejector 3, a support plate 4, a first rear draw-out insert 5, a second rear draw-out insert 6, a B plate 7 and a rear mold core 8, the ejector base plate 1 is provided with an ejector panel 2, the ejector panel 2 is provided with an ejector 3 opposite to the product, a support plate 4 is arranged above the ejector panel 2, a first rear draw-out insert 5 opposite to the deep cavity of the product and a second rear draw-out insert 6 opposite to the flat strip bone 02 of the product are arranged on the support plate 4, the second rear draw-out insert 6 passes through the first rear draw-out insert 5, the first rear draw-out insert 5 and the second rear draw-out insert 6 are both provided with a support surface 60 for supporting the flat strip bone 02 on the upper part, the support surface 60 is arranged according to the shape of the flat strip bone 02, the support surface 60 near the root of the flat strip bone 02 is rounded, a B plate 7 is arranged above the support plate 4, and a rear mold core 8 is installed above the B plate 7.
[0024] The utility model provides a mold structure that ensures the stable ejection size of the product. When the mold is opened, the B plate 7 and the support plate 4 are opened by 5mm, the second rear draw insert 6 retreats 5mm, the product sticking mold force is removed, and the first rear draw insert 5 supports the long bone position 01. Figure 5 As shown, the flat bone 02 bone position insert is removed; the B plate 7 and the support plate 4 are opened again by 20mm, and the first rear insert 5 is withdrawn 20mm, as Figure 6 As shown; ejector pin 3 ejects the product, such as Figure 7 As shown, the product is demoulded.
[0025] The utility model provides a mold structure which ensures the stability of the ejection size of the product, solves the problem of unstable ejection size of the product, can stabilize the size, and greatly improves the product size stability and the production qualification rate.
[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A mold structure that ensures stable ejection dimensions of a product, characterized in that: It includes an ejector base plate, an ejector panel, an ejector, a support plate, a first rear draw-out insert, a second rear draw-out insert, a B plate and a rear mold core. The ejector base plate is installed with an ejector panel, and an ejector opposite to the product is inserted on the ejector panel. A support plate is arranged above the ejector panel, and a first rear draw-out insert opposite to the deep cavity of the product and a second rear draw-out insert opposite to the flat strip bone of the product are installed on the support plate. The second rear draw-out insert passes through the first rear draw-out insert. A B plate is arranged above the support plate, and a rear mold core is installed above the B plate.
2. A mold structure for ensuring stable ejection dimensions of a product according to claim 1, characterized in that: The upper parts of the first rear draw-out insert and the second rear draw-out insert are both provided with a supporting surface for supporting the flat bone.
3. A mold structure for ensuring stable ejection dimensions of a product according to claim 2, characterized in that: The supporting surface is arranged according to the shape of the flat bone.
4. A mold structure for ensuring stable ejection dimensions of a product according to claim 1, characterized in that: The supporting surface near the root of the flat bone is rounded.