Mould angle pin structure
By setting steps and guides on the contact side between the inclined pin and the male mold, and combining them with the groove of the female mold, the problems of inclined pin wear and sliding clearance are solved, thereby achieving mold stability and durability and reducing mold repair costs.
Patent Information
- Application Number
- CN202410510378.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-10-28
AI Technical Summary
The simple female mold slant pin bears the force on the male mold when the mold is closed, which causes the slant pin to deform and wear faster, resulting in sliding gaps and wear. Frequent mold repairs are required, increasing costs, and welding is not durable.
A step is provided on the side where the inclined pin contacts the male mold, along with a guide and an elastic element. The guide moves within the elastic element, and the limiting seat restricts the displacement of the inclined pin. The female mold has a groove that mates with the step. When the mold is closed, the force point of the inclined pin moves away from the sealing surface to prevent wear.
Improve the stability and durability of molds, reduce rework rates, and enhance product appearance quality.
Smart Images
Figure CN120840027A_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to the field of mold mechanism technology, and in particular to a mold inclined pin structure. [Background Technology]
[0002] The female mold bevel pin is a commonly used structure in plastic molds. It is easy to use and requires minimal machining. To save costs, it is often used to replace small sliders, such as... Figure 1 The product 20 shown has an undercut 30 and a break hole 40. Because the break hole 40 structure of the product 20 is not easy to use for the undercut 30 structure of the slider, the female mold inclined pin structure is used to form the product 20.
[0003] like Figures 2-3 As shown, the simple female mold slant pin is reset by breaking the male mold 51. When the mold is closed, the force point of the slant pin 110 is at the end that contacts the male mold 51, which will cause the slant pin 110 to deform. Therefore, during mass production, the wear of the slant pin 110 will be accelerated, and the burrs on the slant pin 110 will need to be repaired. This will increase the mold repair cost. In addition, the slant pin 110 is a moving part in the female mold 52, so there will be sliding clearance. That is, the slant pin 110 will swing relative to the female mold 52 when ejecting and resetting. Since the slant pin 110 has a slope, and the mold closing force is vertical, a lateral force will be generated. Due to the swing of the slant pin 110, the slant pin hole 53 of the female mold 52 is prone to wear and burrs. Welding is often required to repair the burrs, but welding is not durable. Repeated mold repair will increase the cost.
[0004] In view of this, it is necessary to provide a mold inclined pin structure to solve the above problems. [Summary of the Invention]
[0005] The technical problem this invention aims to solve is that in simple female mold inclined pins, the pin is reset by breaking the male mold. During mold closing, the force point of the inclined pin is on the male mold, causing deformation. This accelerates wear during mass production, leading to burrs that require mold repair. Furthermore, the inclined pin is a moving part within the female mold, exhibiting sliding clearance. During reset, it oscillates relative to the female mold, and the lateral force generated during reset causes wear on the inclined pin hole due to this oscillation, resulting in burrs. Welding is necessary, but welding is not durable, and repeated mold repairs increase costs. Therefore, this invention provides a mold inclined pin structure to solve the above problems.
[0006] The solution to the technical problem of this invention is: a mold inclined pin structure, comprising:
[0007] The inclined pin is movably disposed in the inclined hole of the female mold core. The end of the inclined pin that contacts the male mold core is provided with a step. The step is provided with a first breaking step and a first breaking surface. The end away from the male mold core is fixedly connected to a guide member. The guide member is movably disposed in the elastic member and is used to guide the movement of the elastic member. The end of the guide member that contacts the inclined pin is provided with a limiting seat, which is used to limit the displacement of the inclined pin.
[0008] The female mold includes a female template and a female mold core. An elastic element is connected inside the female template through a fixed block. The female template has a movable hole for placing the elastic element. The female mold core has an inclined hole for the movement of the inclined pin. The inclined hole has a groove on the side that contacts the male mold core. The groove has a second breaking step and a second breaking surface. The second breaking step is used to cooperate with the first breaking step, and the second breaking surface is used to cooperate with the first breaking surface. When the mold is closed, the force point of the inclined pin and the female mold core moves away from the sealing surface to prevent wear on the sealing surface.
[0009] Preferably, the degree of the first insertion surface is greater than the degree of the inclined pin by 2°.
[0010] Preferably, the elastic element includes, but is not limited to, a spring.
[0011] The beneficial effects of this invention are as follows: This invention employs a mold inclined pin structure, which features a step on the side of the inclined pin that contacts the male mold core. The step has a first breaking step and a first inserting surface. The female mold core has a corresponding groove, within which a second breaking step and a second inserting surface are provided. The second breaking step engages with the first breaking step, and the second inserting surface engages with the first inserting surface. This causes the force point of the inclined pin and the female mold core to move away from the sealing surface when the mold is closed, preventing wear on the sealing surface. The structure is stable and durable, effectively reducing the mold rework rate and improving the appearance quality of the product.
Brief Description of the Drawings
[0012] Figure 1 This is a structural diagram of a well-known product.
[0013] Figure 2 This is a schematic diagram of a commonly known female mold oblique pin structure.
[0014] Figure 3 yes Figure 2 Cross-sectional view of AA.
[0015] Figure 4 This is a schematic diagram of the mold closing structure of a mold inclined pin structure according to the present invention.
[0016] Figure 5 yes Figure 4 Cross-sectional view of BB in the middle.
[0017] Figure 6This is a schematic diagram of the mold opening structure of a mold inclined pin structure according to the present invention.
[0018] Figure 7 yes Figure 6 Cross-sectional view of CC.
[0019] Figure 8 yes Figure 7 Enlarged view of point A in the middle.
[0020] Figure 9 yes Figure 8 Enlarged view of point B in the middle. [Specific implementation method]
[0021] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the embodiments of the present invention and their accompanying drawings.
[0022] This invention provides a mold inclined pin structure, comprising:
[0023] An inclined pin 110 is movably disposed within the inclined hole 124 of the female mold core 122. The end of the inclined pin 110 that contacts the male mold core 130 is provided with a step 111. The step 111 is provided with a first breaking step 115 and a first breaking surface 116. The end away from the male mold core 130 is fixedly connected to a guide member 112. The guide member 112 is movably disposed within an elastic member 113 and is used to guide the movement of the elastic member 113. In this embodiment, the elastic member 113 includes, but is not limited to, a spring. The end of the guide member 112 that contacts the inclined pin 110 is provided with a limiting seat 114, which is used to limit the displacement of the inclined pin 110.
[0024] The female mold 120 includes a female template 121 and a female mold core 122. An elastic element 113 is connected to the female template 121 through a fixing block 123. The female template 121 has a movable hole 123 for placing the elastic element 113. The female mold core 122 has an inclined hole 124 for the movement of the inclined pin 110. The inclined hole 124 has a groove 125 on the side that contacts the male mold core 130. The groove 125 has a second breaking step 126 and a second breaking surface 127. The second breaking step 126 is used to cooperate with the first breaking step 115, and the second breaking surface 127 is used to cooperate with the first breaking surface 116, so that when the mold is closed, the stress point of the inclined pin 110 and the female mold core 122 moves away from the sealing surface, preventing wear on the sealing surface.
[0025] Among them, such as Figure 9 As shown, in this embodiment, the degree measure of angle C is 12°, the degree measure of angle D is 14°, and the degree measure of the first insertion surface 116 is 2° greater than the degree measure of the inclined pin 110.
[0026] The working principle of this invention is as follows: When the mold is opened, the guide member 112 drives the inclined pin 110 to be ejected under the action of the elastic member 113. When the mold is closed, the inclined pin 110 is pushed back to its original position by the breaking platform 131 provided on the male mold core 130. Because the first breaking step 115 and the first breaking surface 116 of the step 111 cooperate with the second breaking step 126 and the second breaking surface 127 in the groove 125, the force point of the inclined pin 110 and the female mold core 122 is moved away from the sealing surface when the mold is closed, so as to prevent the wear of the sealing surface.
[0027] The beneficial effects of this invention are that, through a mold inclined pin structure, a step 111 is provided on the side of the inclined pin 110 that contacts the male mold core 130. The step 111 has a first breaking step 115 and a first breaking surface 116. The female mold core 122 has a corresponding groove 125. The groove 125 has a second breaking step 126 and a second breaking surface 127. The second breaking step 126 is used to cooperate with the first breaking step 115, and the second breaking surface 127 is used to cooperate with the first breaking surface 116. When the mold is closed, the force point of the inclined pin 110 and the female mold core 122 moves away from the sealing surface, preventing wear on the sealing surface. Its structure is stable and durable, effectively reducing the mold rework rate and effectively improving the appearance quality of the product 20.
[0028] It should be noted that the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments based on the technical solutions of the present invention shall fall within the protection scope of the present invention.
Claims
1. A mold inclined pin structure, characterized in that, include: The inclined pin is movably disposed in the inclined hole of the female mold core. The end of the inclined pin that contacts the male mold core is provided with a step. The step is provided with a first breaking step and a first breaking surface. The end of the inclined pin that is away from the male mold core is connected to an elastic element. The female mold includes a female template and a female mold core. An elastic element is fixedly connected inside the female template. The female template has a movable hole for placing the elastic element. The female mold core has an inclined hole for the movement of the inclined pin. The inclined hole has a groove on the side that contacts the male mold core. The groove has a second breaking step and a second breaking surface. The second breaking step is used to cooperate with the first breaking step, and the second breaking surface is used to cooperate with the first breaking surface, so that when the mold is closed, the force point of the inclined pin and the female mold core moves away from the sealing surface.
2. The mold inclined pin structure as described in claim 1, characterized in that: The degree of the first insertion surface is 2° greater than the degree of the inclined pin.
3. The mold inclined pin structure as described in claim 1, characterized in that: The end of the inclined pin away from the male mold core is fixedly connected to a guide member, and the guide member is movably disposed within the elastic member for guiding the movement of the elastic member.
4. The mold inclined pin structure as described in claim 3, characterized in that: The guide member has a limiting seat at one end that contacts the inclined pin, and the limiting seat is used to limit the displacement of the inclined pin.
5. The mold inclined pin structure as described in claim 1, characterized in that: The elastic element is fixed to the mother template by a fixing block.
6. The mold inclined pin structure as described in claim 5, characterized in that: The elastic element is a spring.