Anti-sticking pitched roof structure for removing inverted buckle and injection mold
Through the combined structure of oblique top and stop, the adhesion problem during product reversal is solved, the lossless ejection of the product is achieved, and the product quality is improved.
Patent Information
- Application Number
- CN202422236569.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-11
AI Technical Summary
In the prior art, when the product is dismissed, it is easy to cause strain or deformation due to the straight top adhesion to the inner side wall, which affects the product quality.
The combination structure of oblique top and stop is adopted. The oblique top slides to drive the stopper to move along the straight slide chute. The stopper slides on the guide surface to avoid adhesion. The oblique top breaks away from the inner wall of the product and then pushes out the product upward.
Effectively avoid strain or deformation of the product during the depressing process, and improve product yield.
Smart Images
Figure CN223161291U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a mold structure, in particular to a reverse buckle anti-sticking inclined top structure and an injection mold. Background Art
[0002] The undercut structure of products in the prior art is used more and more. Therefore, in order to meet the undercut structure of the product, mold engineers need to design an undercut structure and apply it to production.
[0003] Existing undercut structures typically utilize a combination of straight and angled tops in the mold to achieve undercut removal. When a product is removed from the undercut structure, the straight top abuts against the product's inner sidewall, while the angled top pushes upward against the product's inner top wall, ejecting the product. However, because the straight top always abuts the product's inner sidewall, the angled top can stick to the product's inner sidewall when pushing upward against it, causing product damage or deformation. Therefore, a new anti-sticking structure with undercuts is needed. Utility Model Content
[0004] In view of this, the purpose of the present invention is to provide a sloping top structure and an injection mold for preventing product damage and deformation.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a detent anti-sticking inclined top structure, comprising a mold core and an inclined top and a stopper installed in the mold core, the mold core is provided with an inclined inclined slide groove and a vertically arranged straight slide groove connected to the inclined slide groove, the inclined top is slidably arranged in the inclined slide groove, the stopper is slidably arranged in the straight slide groove, the inclined top is provided with a sliding groove to accommodate the sliding of the stopper, the stopper is located in the sliding groove and slides, the front wall of the straight slide groove is provided with a first guide surface, the rear wall of the straight slide groove is provided with a second guide surface and a third guide surface, the stopper is provided with a first sliding surface that matches the first guide surface, a second sliding surface that matches the third guide surface, and a third sliding surface that matches the second guide surface.
[0006] When the lifter slides obliquely upward along the inclined chute, it drives the block located in the sliding groove to slide upward along the straight chute. The block is displaced horizontally forward relative to the lifter. At this time, the block abuts against the inner wall of the product, and the lifter disengages from the inner wall of the product and abuts against the inner top wall of the product upward. Until the first sliding surface abuts against the first guiding surface, the first sliding surface slides obliquely upward along the first guiding surface. At the same time, the third sliding surface slides obliquely upward along the second guiding surface, and the second sliding surface slides obliquely upward along the third guiding surface. The block is displaced horizontally backward relative to the mold core, and the block disengages from the inner wall of the product. At this time, the lifter and the block are completely disengaged from the undercut structure of the product, and the lifter ejects the product upward.
[0007] Further, in the vertical direction, the first guiding surface is located above the second guiding surface, the third guiding surface is located above the first guiding surface, the second sliding surface is located above the first sliding surface, and the third sliding surface is located below the first sliding surface.
[0008] Further, the first guiding surface, the second guiding surface, and the third guiding surface are inclined and parallel to each other; the first sliding surface, the second sliding surface, and the third sliding surface are inclined and parallel to each other.
[0009] Further, the angles between the first guiding surface, the second guiding surface, the third guiding surface and the vertical direction are greater than the angle between the axis of the lifter and the vertical direction; the angles between the first sliding surface, the second sliding surface, the third sliding surface and the vertical direction are greater than the angle between the axis of the lifter and the vertical direction.
[0010] Further, the angles between the first guiding surface, the second guiding surface, the third guiding surface and the vertical direction are equal to the angles between the first sliding surface, the second sliding surface, the third sliding surface and the vertical direction.
[0011] Further, a guiding block is provided at the upper end of the block, and a guiding groove is provided at the upper end of the sliding groove. The guiding block slides horizontally in the guiding groove.
[0012] Further, a first protrusion is convexly provided on the front wall of the guiding block facing the straight chute, and a lifter block is provided at the upper end of the lifter. A second protrusion is convexly provided on the front wall of the lifter block facing the straight chute. The first protrusion and the second protrusion are on the same horizontal line.
[0013] Furthermore, on any horizontal section within the height range of the stop block, the inclined chute and the straight chute are arranged in a cross shape.
[0014] Furthermore, a sliding end that is slidably matched with the push rod is provided at the bottom end of the inclined ejector pin.
[0015] The present utility model also provides an injection mold, including the above-mentioned anti-sticking inclined ejector pin structure for releasing undercuts. The injection mold includes a lower mold base, the anti-sticking inclined ejector pin structure for releasing undercuts is arranged on the lower mold base, the lower mold base is provided with a push rod, and the push rod drives the inclined ejector pin to slide along the inclined chute.
[0016] The anti-sticking inclined ejector pin structure for releasing undercuts provided by the present utility model and the injection mold including the anti-sticking inclined ejector pin structure for releasing undercuts can effectively avoid the product from being scratched or deformed during the release of undercuts, resulting in product scrapping, and greatly improve the yield rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0018] Figure 1 It is a three-dimensional view of an anti-sticking inclined ejector pin structure for releasing undercuts of the present utility model.
[0019] Figure 2 It is Figure 1 a three-dimensional exploded view of the anti-sticking inclined ejector pin structure for releasing undercuts shown.
[0020] Figure 3 It is a three-dimensional view of the mold core of the present utility model.
[0021] Figure 4 It is a three-dimensional view of the inclined ejector pin of the present utility model.
[0022] Figure 5 It is a three-dimensional view of the stop block of the present utility model.
[0023] Figure 6 It is Figure 5 a three-dimensional view of the stop block shown from another angle.
[0024] Figure 7 It is a front view of the anti-sticking inclined ejector pin structure for releasing undercuts of the present utility model.
[0025] Figure 8 It is Figure 7 a sectional view of the anti-sticking inclined ejector pin structure for releasing undercuts shown along the A-A plane.
[0026] Figure 9 The sectional view of the mold core shown in Figure 8 Figure 5
[0027] Figure 10 The sectional view of the mold core along the B-B plane shown in Figure 7 Figure 6
[0028] Figure 11 The schematic assembly structure diagram of the stopper and the lifter of the present utility model
[0029] Figure 12 The schematic assembly structure diagram of the stopper and the lifter from another angle shown in Figure 11 Figure 7 Specific embodiments
[0030] The following will describe in detail specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the description of the present invention without creative efforts shall fall within the scope of protection of the present invention
[0031] The terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. They are only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention
[0032] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to the listed elements, it may also include other elements not specifically listed
[0033] Please refer to Figures 1-12 Figure 8. The present utility model discloses an anti-sticking lifter structure for releasing undercuts, which includes a mold core 10, and a lifter 20 and a stopper 30 installed in the mold core 10
[0034] The mold core 10 is provided with an inclined chute 11 arranged obliquely and a vertical straight chute 12 communicating with the inclined chute 11. The lifter 20 is slidably arranged in the inclined chute 11, and the stopper 30 is slidably arranged in the straight chute 12. The lifter 20 is provided with a sliding groove 22 for accommodating the sliding of the stopper 30. The stopper 30 slides in the sliding groove 22. The front wall of the straight chute 12 is provided with a first guiding surface 13, the rear wall of the straight chute 12 is provided with a second guiding surface 14 and a third guiding surface 15. The stopper 30 is provided with a first sliding surface 32 for cooperating with the first guiding surface 13, a second sliding surface 33 for cooperating with the third guiding surface 15, and a third sliding surface 34 for cooperating with the second guiding surface 14.
[0035] When the anti-sticking lifter structure for releasing undercuts needs to eject the product, when the lifter 20 slides obliquely upward along the inclined chute 11, it drives the stopper 30 located in the sliding groove 22 to slide upward along the straight chute 12. At this time, the stopper 30 undergoes a horizontal forward displacement relative to the lifter 20. At this time, the stopper 30 abuts against the inner side wall of the product, and the lifter 20 disengages from the inner side wall of the product and abuts against the inner top wall of the product upward until the first sliding surface 32 abuts against the first guiding surface 13. The first sliding surface 32 slides obliquely upward along the first guiding surface 13. At the same time, the third sliding surface 34 slides obliquely upward along the second guiding surface 14, and the second sliding surface 33 slides obliquely upward along the third guiding surface 15. The stopper 30 undergoes a horizontal backward displacement relative to the mold core 10, and the stopper 30 disengages from the inner side wall of the product. At this time, the lifter 20 and the stopper 30 are completely disengaged from the undercut structure of the product, and the lifter 20 ejects the product upward;
[0036] When the anti-sticking lifter structure for releasing undercuts returns to its initial state, when the lifter 20 slides obliquely downward along the inclined chute 11, it drives the stopper 30 located in the sliding groove 22 to slide downward along the straight chute 12. The second sliding surface 33 slides obliquely downward along the third guiding surface 15. At the same time, the third sliding surface 34 slides obliquely downward along the second guiding surface 14. The stopper 30 undergoes a horizontal forward displacement relative to the mold core 10. Then the stopper 30 slides downward along the straight chute 12, and the lifter 20 continues to slide obliquely downward. The stopper 30 undergoes a horizontal backward displacement relative to the lifter 20 until a part of the lifter 20 and the stopper 30 abuts against the upper surface of the mold core 10 and stops moving. The anti-sticking lifter structure for releasing undercuts is reset to prepare for forming the undercut structure of the product.
[0037] Please refer to Figure 8, in the vertical direction, the first guiding surface 13 is located above the second guiding surface 14, the third guiding surface 15 is located above the first guiding surface 13, the second sliding surface 33 is located above the first sliding surface 32, and the third sliding surface 34 is located below the first sliding surface 32. In this embodiment, the first guiding surface 13, the second guiding surface 14, and the third guiding surface 15 are inclined and the first guiding surface 13, the second guiding surface 14, and the third guiding surface are parallel to each other; the first sliding surface 32, the second sliding surface 33, and the third sliding surface 34 are inclined, and the first sliding surface 32, the second sliding surface 33, and the third sliding surface 34 are parallel to each other. Moreover, the first guiding surface 13 is parallel to the first sliding surface 32, and the second guiding surface 14, the third guiding surface 15 are parallel to the second sliding surface 33, the third sliding surface 34.
[0038] More specifically, the angles between the first guiding surface 13, the second guiding surface 14, the third guiding surface 15 and the vertical direction are greater than the angle between the axis of the lifter 20 and the vertical direction; the angles between the first sliding surface 32, the second sliding surface 33, the third sliding surface 34 and the vertical direction are greater than the angle between the axis of the lifter 20 and the vertical direction. And in this embodiment, the angles between the first guiding surface 13, the second guiding surface 14, the third guiding surface 15 and the vertical direction are equal to the angles between the first sliding surface 32, the second sliding surface 33, the third sliding surface 34 and the vertical direction.
[0039] Please refer to Figures 4-6 , a guiding block 31 is provided at the upper end of the stopper 30, a guiding groove 23 is provided at the upper end of the sliding groove 22, and the guiding block 31 slides horizontally in the guiding groove 23.
[0040] A first protrusion 311 protrudes from the front wall of the guiding block 31 facing the straight sliding groove 12, a lifter block 21 is provided at the upper end of the lifter, and a second protrusion 211 protrudes from the front wall of the lifter block 21 facing the straight sliding groove 12. The first protrusion 311 and the second protrusion 211 are on the same horizontal line.
[0041] In this embodiment, the first protrusion 311 and the second protrusion 211 are on the same horizontal line and are used to jointly form the undercut structure of the product. And when the undercut-preventing and anti-sticking lifter structure is reset, at least part of the lower surfaces of the first protrusion 311 and the second protrusion 211 abut against the upper surface of the mold core 10.
[0042] Please refer to Figure 9, on any horizontal cross-section within the height range of the stopper 30, the inclined chute 11 and the straight chute 12 are arranged in a cross shape.
[0043] Please refer to Figure 11 and Figure 12 , a sliding end 24 that is slidably matched with the push rod is provided at the bottom end of the lifter 20. In this embodiment, the push rod is located below the mold core 10 and is vertically arranged. When the push rod pushes the lifter 20 upward, the push rod drives the lifter 20 to slide obliquely upward, and at the same time, the push rod displaces horizontally forward relative to the lifter 20; when the push rod pulls the lifter 20 downward, the push rod drives the lifter 20 to slide obliquely downward, and at the same time, the push rod displaces horizontally backward relative to the lifter 20. During the displacement stroke of the push rod and the lifter, the sliding end of the push rod and the lifter remains in sliding connection.
[0044] When the anti-sticking lifter structure with reverse buckle release of the present utility model is in use,
[0045] When the product needs to be ejected after injection molding, the push rod pushes the lifter 20 to slide upward and backward along the inclined chute 11, and the lifter 20 drives the stopper 30 located in the sliding groove 22 to slide upward along the straight chute 12. The stopper 30 displaces horizontally forward relative to the lifter 20. At this time, the stopper 30 abuts against the inner side wall of the product forward, and the lifter 20 abuts against the inner top wall of the product upward. Until the first sliding surface 32 abuts against the first guiding surface 13, the first sliding surface 32 slides upward and backward along the first guiding surface 13, and at the same time, the third sliding surface 34 slides upward and backward along the second guiding surface 14, and the second sliding surface 33 slides upward and backward along the third guiding surface 15. The stopper 30 displaces horizontally backward relative to the mold core 10. Finally, the stopper 30 disengages from the inner side wall of the product. At this time, the lifter 20 and the stopper 30 are completely disengaged from the reverse buckle structure of the product, and the lifter 20 then ejects the product upward;
[0046] When it is necessary to restore the initial state for injection molding, the push rod pulls the lifter 20 to slide downward and forward along the inclined chute 11, driving the stopper 30 located in the sliding groove 22 to slide along the straight chute 12. The second sliding surface 33 slides downward and forward along the third guiding surface 15. At the same time, the third sliding surface 34 slides downward and forward along the second guiding surface 14, and the first sliding surface 32 slides downward and forward along the first guiding surface 13. The stopper 30 undergoes a horizontal forward displacement relative to the mold core 10. Then, the stopper 30 slides downward along the straight chute 12, and the lifter 20 continues to slide downward and forward. The stopper 30 undergoes a horizontal backward displacement relative to the lifter 20 until at least a part of the second protrusion 211 of the lifter 20 and the first protrusion 311 of the stopper 30 abuts against the upper surface of the mold core 10 and stops moving. The anti-sticking lifter structure for releasing undercuts is reset, preparing for forming the undercut structure of the product.
[0047] The present utility model also discloses an injection mold, including the above anti-sticking lifter structure for releasing undercuts. The injection mold includes a lower mold base. The anti-sticking lifter structure for releasing undercuts is arranged on the lower mold base. The lower mold base is provided with a push rod, and the push rod drives the lifter to slide along the inclined chute.
[0048] The anti-sticking lifter structure for releasing undercuts provided by the present utility model and the injection mold including the anti-sticking lifter structure for releasing undercuts can effectively avoid the product from being scratched or deformed during the release of undercuts, resulting in product scrapping, and greatly improve the yield rate of the product.
[0049] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.
Claims
1. An anti-sticking angled lifter structure for releasing reverse locking, comprising a mold core, an angled lifter and a stopper installed in the mold core, characterized in that, The mold core is provided with an inclined chute and a vertical chute communicating with the inclined chute. The lifter is slidably arranged in the inclined chute, and the stopper is slidably arranged in the vertical chute. The lifter is provided with a sliding groove for accommodating the sliding of the stopper, and the stopper slides in the sliding groove. The front wall of the vertical chute is provided with a first guiding surface, and the rear wall of the vertical chute is provided with a second guiding surface and a third guiding surface. The stopper is provided with a first sliding surface cooperating with the first guiding surface, a second sliding surface cooperating with the third guiding surface, and a third sliding surface cooperating with the second guiding surface. When the lifter slides obliquely upward along the inclined chute, it drives the stopper located in the sliding groove to slide upward along the vertical chute. The stopper displaces horizontally forward relative to the lifter. At this time, the stopper abuts against the inner side wall of the product, and the lifter disengages from the inner side wall of the product and abuts against the inner top wall of the product upward until the first sliding surface abuts against the first guiding surface. Then, the first sliding surface slides obliquely upward along the first guiding surface. At the same time, the third sliding surface slides obliquely upward along the second guiding surface, and the second sliding surface slides obliquely upward along the third guiding surface. The stopper displaces horizontally backward relative to the mold core, and the stopper disengages from the inner side wall of the product. At this time, the lifter and the stopper completely disengage from the undercut structure of the product, and the lifter ejects the product upward.
2. The anti-sticking angled lifter structure for releasing reverse locking according to claim 1, wherein, In the vertical direction, the first guiding surface is located above the second guiding surface, the third guiding surface is located above the first guiding surface, the second sliding surface is located above the first sliding surface, and the third sliding surface is located below the first sliding surface.
3. The anti-back-off and anti-sticking angled lifter structure according to claim 2, wherein The first guiding surface, the second guiding surface, and the third guiding surface are inclined and parallel to each other; the first sliding surface, the second sliding surface, and the third sliding surface are inclined and parallel to each other.
4. The anti-back-off and anti-sticking angled lifter structure according to claim 3, wherein The angles between the first guiding surface, the second guiding surface, the third guiding surface and the vertical direction are greater than the angle between the axis of the lifter and the vertical direction; the angles between the first sliding surface, the second sliding surface, the third sliding surface and the vertical direction are greater than the angle between the axis of the lifter and the vertical direction.
5. The anti-sticking inclined ejector structure for releasing reverse locking according to claim 4, characterized in that, The angles between the first guiding surface, the second guiding surface, the third guiding surface and the vertical direction are equal to the angles between the first sliding surface, the second sliding surface, the third sliding surface and the vertical direction.
6. The anti-back-off and anti-sticking angled lifter structure according to claim 1, wherein, The upper end of the stopper is provided with a guiding block, and the upper end of the sliding groove is provided with a guiding groove. The guiding block slides horizontally in the guiding groove.
7. The anti-back-off and anti-sticking angled lifter structure according to claim 6, wherein, The guiding block protrudes a first protrusion facing the front wall of the vertical chute, and the upper end of the lifter is provided with a lifter block. The lifter block protrudes a second protrusion facing the front wall of the vertical chute. The first protrusion and the second protrusion are on the same horizontal line.
8. The anti-back-off and anti-sticking angled lifter structure according to claim 1, wherein In any horizontal section within the height range of the stopper, the inclined chute and the vertical chute are arranged in a cross shape.
9. The anti-back-off and anti-sticking inclined ejector structure according to claim 1, wherein The bottom end of the angled lifter is provided with a sliding end that slidably cooperates with the push rod.
10. An injection mold, comprising the anti-sticking inclined lifter structure for releasing undercuts as described in any one of claims 1-9, characterized in that, The injection mold includes a lower mold base, the undercut anti-sticking angled lifter structure is arranged on the lower mold base, the lower mold base is provided with a push rod, and the push rod drives the angled lifter to slide along the angled chute.