Anti-sticking structure of pitched roof and injection mold
By designing an oblique top anti-adhesive structure in the injection mold, and using the cooperation of the oblique top member and the stop column, the problem of difficult demolding of injection molded products is solved, and the convenience of demolding, high yield and production capacity of the product are achieved.
Patent Information
- Application Number
- CN202420403305.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-01
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-03-01
AI Technical Summary
Existing injection molds are prone to deformation or damage in the mold release process, and the production yield is low, affecting production capacity.
An oblique top anti-adhesive structure is designed, including installing an inclined top member and a stop column on the lower mold core. Through the cooperation of the inclined top member and the stop column, the disengagement of the inclined top block from the product inverted structure is achieved, and the mold release process is simplified.
It realizes the convenience of mold release, prevents product deformation or damage, and improves product yield and production capacity.
Smart Images
Figure CN222779947U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to a sloping top anti-sticking structure and an injection mold. Background Art
[0002] In the current manufacturing industry, general injection molds consist of an upper mold and a lower mold, which are paired to form a molding cavity between the two. Most injection molded products have complex structures. For example, there are bone positions and undercut structures in the back panel of a mobile phone. After the mold is closed, the product is undercut on the molding surface of the lower mold, which makes demoulding difficult. In addition, the demoulding process can easily deform or damage the product, resulting in a low production yield. A large number of products need to be reworked, which greatly affects the product's production capacity.
[0003] Therefore, in view of the current problem of difficulty in demoulding injection molded products, it is urgent to develop a new machine or new technology to solve the above problem. Utility Model Content
[0004] The utility model aims to provide a slanted top anti-sticking structure and an injection mold to solve the problem of difficulty in demoulding of current injection molded products.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A slanted top anti-sticking structure is applied to a product with an undercut structure, comprising a lower mold core, the slanted top anti-sticking structure comprising a slanted top piece and a stop column installed on the lower mold core, the slanted top piece comprising a slanted top block and a slanted top column extending downward from the slanted top block, a movable hole is provided on the slanted top column corresponding to the stop column, the stop column is movably arranged in the movable hole, an abutment portion is convexly provided on the top of the stop column, an inclined hole is penetrated through the slanted top piece corresponding to the lower mold core, and one end of the inclined hole is located on the upper surface of the lower mold core, the slanted top piece is movably arranged in the inclined hole, and the slanted top column protrudes downwardly out of the lower surface of the lower mold core, the lower mold core is provided with a movable groove connected to the inclined hole in a vertical direction in the inclined hole, the stop column is movably arranged in the movable groove, and the stop column and the slanted top column are arranged at an angle;
[0007] When the mold is opened, the inclined ejector and the stop column move relative to each other in the lateral direction, the abutting portion of the stop column abuts against the undercut structure of the product, the inclined ejector block moves inward to disengage from the undercut structure, and the inclined ejector column drives the inclined ejector block to eject the product upward.
[0008] Furthermore, the included angle between the stop column and the inclined lift column is less than or equal to 15°.
[0009] Furthermore, the inclined top anti-sticking structure also includes a push rod, the lower end of the inclined top column is connected to the push rod, and the push rod drives the inclined top piece to move in the vertical direction.
[0010] Furthermore, the movement trajectory of the inclined ejector along the inclined hole and the movement trajectory of the stop column along the movable groove form an angle. In the horizontal direction, the stop column and the inclined ejector column move towards each other, and the stop column moves back and forth in the movable hole of the inclined ejector column.
[0011] Furthermore, when the mold is closed, the inclined ejector block is located at the top end of the inclined hole and at the edge of the lower mold core, and the abutment portion is located below the inclined ejector block and protrudes toward the outer side of the lower mold core.
[0012] Furthermore, the abutting portion of the stop column is provided with a protrusion that is engaged with the product, and the protrusion is engaged with the undercut structure of the product.
[0013] Furthermore, at least one side of the stop column is provided with a guide portion protruding outwardly, the movable hole is provided with a guide groove corresponding to the guide portion, and the guide portion is movably arranged in the guide groove.
[0014] Furthermore, the protruding direction of the guide portion is perpendicular to the relative motion surface between the lift member and the stop column.
[0015] Furthermore, in the lateral movement direction of the stop column relative to the inclined lift member, the cross-sectional area of the movable hole of the inclined lift column is larger than the cross-sectional area of the stop column, and in the movement direction of the inclined lift member along the inclined hole, the cross-sectional area of the inclined hole is larger than the cross-sectional area of the inclined lift member.
[0016] An injection mold includes the above-mentioned inclined top anti-sticking structure. The injection mold also includes an upper mold core, which cooperates with a lower mold core. The lower mold core, the inclined top block, the abutment portion, and the upper mold core together form an injection mold cavity, and the product is formed in the injection mold cavity.
[0017] The utility model provides a slanted top anti-sticking structure and an injection mold with the beneficial effects of not only facilitating demoulding but also preventing product deformation or damage, thereby improving product yield and production capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a cross-sectional view of a sloping top anti-sticking structure of the utility model.
[0019] Figure 2 for Figure 1 An enlarged cross-sectional view of point A in the sloping top anti-sticking structure shown.
[0020] Figure 3 for Figure 1 A cross-sectional view of the lower mold core with a sloping top anti-sticking structure is shown.
[0021] Figure 4 for Figure 1 A three-dimensional view of the stop post of the slanted top anti-sticking structure is shown.
[0022] Figure 5 for Figure 1 A three-dimensional view of the inclined top piece of the inclined top anti-sticking structure shown.
[0023] Figure 6 for Figure 5 An enlarged stereoscopic view of point B in the tilted top member shown. DETAILED DESCRIPTION
[0024] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0025] The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc. in the specification and claims of the utility model indicate directions or position relationships based on the directions or position relationships shown in the drawings, and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore cannot be understood as limitations on the present application.
[0026] See also Figure 1-Figure 5 A slanted top anti-sticking structure is applied to a product 100 with an undercut structure 101, including a lower mold core 10, the slanted top anti-sticking structure includes a slanted top piece 20 and a stop column 30 installed on the lower mold core 10, the slanted top piece 20 has a slanted top block 21 and a slanted top column 22 extending downward from the slanted top block 21, a movable hole 221 is provided on the slanted top column 22 corresponding to the stop column 30, the stop column 30 is movably arranged in the movable hole 221, and a contact portion 31 is convexly provided on the top of the stop column 30, the The lower mold core 10 is provided with an inclined hole 11 corresponding to the inclined ejector 20, and one end of the inclined hole 11 is located on the upper surface of the lower mold core 10, the inclined ejector 20 is movably arranged in the inclined hole 11, and the inclined ejector column 22 protrudes downward from the lower surface of the lower mold core 10, and the lower mold core 10 is provided with an active groove 12 in the inclined hole 11 along the vertical direction and connected with the inclined hole 11, and the stop column 30 is movably arranged in the active groove 12, and the stop column 30 is arranged at an angle with the inclined ejector column 22;
[0027] When the mold is opened, the inclined ejector piece 20 and the stop column 30 move relative to each other in the lateral direction, the abutment portion 31 of the stop column 30 abuts against the undercut structure 101 of the product 100, the inclined ejector block 21 moves inward to disengage from the undercut structure 101, and the inclined ejector column 22 drives the inclined ejector block 21 to eject the product 100 upward.
[0028] The inclined top anti-sticking structure also includes a push rod, the lower end of which is connected to a driving device, the lower end of the inclined top column 22 is connected to the push rod, and the push rod drives the inclined top member 20 to move in the vertical direction. More specifically, the lower end of the inclined top column 22 is provided with a buckle 222, and the buckle 222 is buckled with the push rod.
[0029] When the inclined top anti-sticking structure is working, first, the inclined top column 22 moves upward in the vertical direction driven by the push rod, and then the inclined top piece 20 and the stop column 30 move upward synchronously. At the same time, in the horizontal direction, the inclined top piece 20 moves horizontally inward; then, the abutment portion 31 of the stop column 30 keeps abutting against the undercut structure 101 of the product 100, and the stop column 30 limits the undercut structure 101 of the product 100 to follow the movement of the inclined top piece 20 so that the undercut structure 101 is separated from the inclined top block 21; finally, the robot arm can easily take away the product 100, and the product 100 is not easy to deform.
[0030] From the above, the inclined top anti-sticking structure proposed in the utility model realizes the separation of the inclined top piece 20 from the undercut structure 101 of the product 100 through the cooperation of the inclined top piece 20, the stop column 30 and the lower mold core 10, which not only makes demolding easy, but also prevents the product 100 from deformation or damage, thereby improving the yield and production capacity of the product 100.
[0031] See also Figure 1 , Figure 3 and Figure 5 In this embodiment, the angle between the stop post 30 and the inclined ejector post 22 is less than or equal to 15°. The movement trajectory of the inclined ejector 20 along the inclined hole 11 and the movement trajectory of the stop post 30 along the movable groove 12 form an angle, so that the stop post 30 and the inclined ejector post 22 move toward each other in the horizontal direction, and the stop post 30 moves back and forth in the movable hole 221 of the inclined ejector post 22.
[0032] See also Figure 1 and Figure 2 When the mold is closed, the inclined ejector block 21 is located at the top of the inclined hole 11 and at the edge of the lower mold core 10, and the abutment portion 31 is located below the inclined ejector block 21 and protrudes toward the outer side of the lower mold core 10. At this time, the inclined ejector block 21 and the abutment portion 31 abut against the undercut structure 101 of the product 100 respectively.
[0033] More specifically, the abutment portion 31 of the stopper column 30 is provided with a protrusion 311 engaged with the product 100, and the protrusion 311 is engaged with the undercut structure 101 of the product 100. The protrusion 311 serves to limit the undercut structure 101 from following the movement of the inclined ejector block 21 during demoulding.
[0034] See also Figure 3-Figure 6 At least one side of the stop column 30 is horizontally protruded outwardly with a guide portion 32, and the movable hole 221 is provided with a guide groove 2211 corresponding to the guide portion 32, and the guide portion 32 is movably arranged in the guide groove 2211. The protruding direction of the guide portion 32 is perpendicular to the relative motion surface between the inclined ejector 20 and the stop column 30. Through the cooperation between the guide portion 32 and the guide groove 2211, the stop column 30 can follow the movement of the inclined ejector 20 in the vertical direction, and at the same time, the stop column 30 can move relative to the inclined ejector 20 in the horizontal direction, so as to achieve the effect of assisting the inclined ejector block 21 to disengage from the undercut structure 101.
[0035] See also Figure 3 and Figure 5 In the lateral movement direction of the stop post 30 relative to the lift member 20, the cross-sectional area of the movable hole 221 of the lift post 22 is larger than the cross-sectional area of the stop post 30, so as to ensure that the stop post 30 can be installed in the movable hole 221 and move smoothly. In the movement direction of the lift member 20 along the inclined hole 11, the cross-sectional area of the inclined hole 11 is larger than the cross-sectional area of the lift member 20, so as to ensure that the lift member 20 can be installed in the inclined hole 11 and move smoothly.
[0036] In addition, the utility model also proposes an injection mold, including the slanted top anti-sticking structure of any of the above-mentioned embodiments, and the injection mold also includes an upper mold core, and the upper mold core cooperates with the lower mold core 10. The lower mold core 10, the slanted top block 21, the abutment portion 31, and the upper mold core together enclose an injection mold cavity, and the product 100 is molded in the injection mold cavity.
[0037] The utility model provides a slanted top anti-sticking structure and an injection mold with the beneficial effects of not only facilitating demoulding but also preventing product deformation or damage, thereby improving product yield and production capacity.
[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A sloping top anti-sticking structure, applied to products with an undercut structure, comprising a lower mold core, characterized in that: The inclined top anti-sticking structure includes an inclined top piece and a stop column installed on the lower mold core, the inclined top piece has an inclined top block and an inclined top column extending downward from the inclined top block, a movable hole is provided on the inclined top column corresponding to the stop column, the stop column is movably arranged in the movable hole, an abutment portion is convexly provided on the top of the stop column, the lower mold core is provided with an inclined hole corresponding to the inclined top piece, and one end of the inclined hole is located on the upper surface of the lower mold core, the inclined top piece is movably arranged in the inclined hole, and the inclined top column protrudes downward from the lower surface of the lower mold core, the lower mold core is provided with a movable groove connected to the inclined hole in the vertical direction in the inclined hole, the stop column is movably arranged in the movable groove, and the stop column and the inclined top column are arranged at an angle; When the mold is opened, the inclined ejector and the stop column move relative to each other in the lateral direction, the abutting portion of the stop column abuts against the undercut structure of the product, the inclined ejector block moves inward to disengage from the undercut structure, and the inclined ejector column drives the inclined ejector block to eject the product upward.
2. A sloping top anti-sticking structure as claimed in claim 1, characterized in that: The included angle between the stop column and the inclined lift column is less than or equal to 15°.
3. The anti-sticking structure with inclined top according to claim 1, characterized in that: The inclined top anti-sticking structure also includes a push rod, the lower end of the inclined top column is connected to the push rod, and the push rod drives the inclined top piece to move in the vertical direction.
4. The anti-sticking structure with inclined top according to claim 1, characterized in that: The movement trajectory of the inclined lift member along the inclined hole forms an angle with the movement trajectory of the stop column along the movable groove. In the horizontal direction, the stop column and the inclined lift column move toward each other, and the stop column moves back and forth in the movable hole of the inclined lift column.
5. The anti-sticking structure with inclined top according to claim 1, characterized in that: When the mold is closed, the inclined ejector block is located at the top end of the inclined hole and at the edge of the lower mold core, and the abutment portion is located below the inclined ejector block and protrudes toward the outer side of the lower mold core.
6. A sloping top anti-sticking structure as claimed in claim 5, characterized in that: The abutting portion of the stop column is provided with a protrusion that is engaged with the product, and the protrusion is engaged with the undercut structure of the product.
7. The anti-sticking structure with inclined top according to claim 1, characterized in that: At least one side of the stop column is provided with a guide portion protruding outwardly, the movable hole is provided with a guide groove corresponding to the guide portion, and the guide portion is movably arranged in the guide groove.
8. A sloping top anti-sticking structure as claimed in claim 7, characterized in that: The protruding direction of the guide portion is perpendicular to the relative motion surface between the lift member and the stop column.
9. The anti-sticking structure with inclined top according to claim 1, characterized in that: In the lateral movement direction of the stop column relative to the inclined lift member, the cross-sectional area of the movable hole of the inclined lift column is larger than the cross-sectional area of the stop column, and in the movement direction of the inclined lift member along the inclined hole, the cross-sectional area of the inclined hole is larger than the cross-sectional area of the inclined lift member.
10. An injection mold, comprising the inclined top anti-sticking structure according to any one of claims 1 to 9, characterized in that: The injection mold further comprises an upper mold core, which cooperates with the lower mold core. The lower mold core, the inclined top block, the abutment portion and the upper mold core jointly enclose an injection mold cavity, and the product is formed in the injection mold cavity.