Front and back forced release structure of vehicle door buckle
By designing a strong front and rear release structure for the door latches and utilizing a combination of sliding components and staggered inlay plates, the problem of difficult demolding of inverted products was solved, achieving a simple and flexible demolding process and reducing production costs.
Patent Information
- Application Number
- CN202423115424.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing technologies make it difficult to demold products with undercuts smoothly, and the undercut processing technology is complex, resulting in low production efficiency and high costs.
A front and rear strong release structure for a car door buckle was designed, including a rear mold, an ejection mechanism, and a sliding component. The sliding component allows the insert to slide synchronously, ensuring that the product remains balanced during the first ejection and remains stationary during the second ejection, thereby achieving smooth demolding of the undercut part. The processing of the undercut groove is simplified by using staggered stacked insert plates.
This enabled the smooth demolding of inverted products, reducing production difficulty and costs, and improving production efficiency.
Smart Images
Figure CN223720039U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of demolding of injection molds, and specifically relates to a front and rear strong release structure for car door buckles. Background Technology
[0002] In the field of injection molding, demolding technology is a crucial part of mold making and injection molding, involving the smooth removal of the molded product from the mold. When the product has lateral protrusions or grooves and the size of the protrusions or grooves is small, forced demolding can be achieved by using the elastic deformation of the plastic part to eject it in one step.
[0003] For products with multiple undercuts on the rear mold side, traditional single-ejection or angled ejection methods cannot completely eject them. Alternatively, due to the undercuts, the product may tilt during ejection, causing some undercuts to become fully engaged in the grooves of the rear mold, increasing ejection difficulty and increasing the risk of product damage. Therefore, traditional single-ejection techniques are unsuitable for products with undercuts. Furthermore, existing undercut processing techniques are complex and difficult, leading to increased costs and slower production efficiency. Utility Model Content
[0004] (1) Technical problems to be solved
[0005] This utility model provides a front and rear strong release structure for car door buckles, which aims to solve the problems of difficulty in demolding products with undercuts and the difficulty in processing undercut technology in the existing technology.
[0006] (2) Technical solution
[0007] This utility model provides a front and rear forced release structure for a car door latch, including a rear mold, an ejection mechanism disposed below the rear mold, and a sliding assembly. The rear mold has a rear mold core, on which an insert 1 is slidably connected and an insert 2 is fixedly connected. The rear mold core, insert 1, and insert 2 together enclose an inwardly recessed injection cavity. The ejection mechanism includes a push plate and an ejection assembly disposed between the push plate and the rear mold. An ejector pin 1 is fixedly disposed on the ejection assembly, and the other end of ejector pin 1 passes through the rear mold and the rear mold core and extends into the injection cavity. An ejector pin 2 is fixedly disposed on the push plate, and the other end of ejector pin 2 passes through the ejection assembly, the rear mold, and the rear mold core in sequence and is fixedly connected to insert 1.
[0008] The sliding assembly includes a first fixed block fixed to the push plate, a second fixed block fixed to the bottom of the rear mold, and a slider slidably connected to the ejection assembly. The slider is engaged with the first fixed block and slidably connected to the inclined surface of the second fixed block. The slider can be separated from the first fixed block by sliding along the inclined surface of the second fixed block.
[0009] Further, the fixed block one is provided with an inwardly recessed clamping groove, and one side of the sliding block is provided with a protruding block matched with the clamping groove, and the protruding block and the clamping groove are slidably connected.
[0010] Further, one side of the sliding block is provided with a sliding surface matched with the inclined surface, and the sliding surface and the protruding block are arranged on the same side of the sliding block.
[0011] Further, the sliding surface of the sliding block extends towards the upper inclined side away from the fixed block two, so that when the sliding block slides upwards along the inclined surface, the protruding block and the clamping groove are away from each other.
[0012] Further, the sliding block is provided with an elastic member one on the opposite end surface of the protruding block, which is elastically pressed with the ejection assembly, so that the protruding block maintains a tendency to move towards the clamping groove.
[0013] Further, the ejection assembly is provided with a through hole communicating with the upper and lower sides, and the fixed block one and the fixed block two are slidably connected in the through hole, and the fixed block one and the fixed block two are arranged side by side.
[0014] Further, the insert two is provided with a plurality of undercut grooves communicating with the injection cavity, and the undercut grooves are arranged at intervals along the length direction of the injection cavity.
[0015] Further, the insert two comprises a plurality of insert plates one and insert plates two arranged in a staggered and stacked manner along the length direction of the injection cavity, and the insert plate one and the adjacent insert plate two jointly form the undercut groove.
[0016] Further, a plurality of guide columns are fixedly arranged on the ejection assembly, and the other end of the guide column is fixedly connected with the rear mold, and the guide column has a guiding effect on the ejection of the ejection assembly.
[0017] Further, the guide column is provided with an elastic member two, and the two ends of the elastic member two are elastically pressed with the bottom of the rear mold and the top of the ejection assembly, respectively.
[0018] Compared with the prior art, the beneficial effects of the utility model lie in:
[0019] The slide assembly is arranged, so that the insert one can be synchronously slid when the product is first ejected, the product can keep balance in horizontal direction when the product is first ejected, the inverted buckle part can be smoothly and firmly pulled out, then the insert one keeps still when the product is secondly ejected, the product is separated from the insert one, the product with inverted buckle structure is smoothly demolded, the structure is simple, and the use is flexible. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is overall structure schematic diagram of the utility model.
[0021] Figure 2 It is partial enlarged view of back mould and back mould kernel plan view of the utility model.
[0022] Figure 3 It is cross section view of overall structure of the utility model.
[0023] Figure 4 It is A place enlarged view of the utility model. Figure 3
[0024] Figure 5 It is cross section view of front mould upward movement of the utility model.
[0025] Figure 6 It is B place enlarged view of the utility model. Figure 5
[0026] Figure 7 It is structure schematic diagram of slide assembly of the utility model.
[0027] Figure 8 It is explosion view of slide assembly of the utility model.
[0028] Figure 9 It is perspective view of slide block of the utility model.
[0029] Figure 10 It is two side partial cross section view of slide assembly when the product is first ejected of the utility model.
[0030] Figure 11 It is two side partial cross section view of slide assembly when the product is secondly ejected of the utility model.
[0031] Figure 12 It is partial cross section view of product demolding when the product is first ejected of the utility model.
[0032] Figure 13 It is partial cross section view of product demolding when the product is secondly ejected of the utility model.
[0033] Figure 14 The exploded view of the ejection mechanism of the utility model.
[0034] Figure 15 The structure diagram of the second insert of the utility model.
[0035] Figure 16 The exploded view of the second insert of the utility model.
[0036] Figure 17 The structure diagram of the guide column and the second elastic piece of the utility model.
[0037] Reference signs: 1 - back mold, 11 - back mold core, 12 - first insert, 13 - second insert, 131 - inverted slot, 132 - first inlaid plate, 133 - second inlaid plate, 14 - injection cavity, 2 - ejection mechanism, 21 - push plate, 22 - ejection assembly, 221 - through hole, 222 - guide column, 223 - second elastic piece, 224 - sliding groove, 23 - first ejector pin, 24 - second ejector pin, 3 - sliding assembly, 31 - first fixed block, 311 - clamping groove, 32 - second fixed block, 321 - inclined surface, 33 - sliding block, 331 - convex block, 332 - sliding surface, 333 - first elastic piece, 4 - front mold, 41 - front mold core, 42 - upper second insert, 43 - upper first ejector pin, 5 - product. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.
[0039] As Figures 1-2The utility model provides a kind of car door buckle front and rear strong structure, including rear mould 1, the ejection mechanism 2 and sliding assembly 3 of being arranged in the lower of rear mould 1, be equipped with rear mould kernel 11 on rear mould 1, insert piece one 12 and fixedly connected with insert piece two 13 are separately slidably connected on rear mould kernel 11, rear mould kernel 11, insert piece one 12 and the insert piece two 13 are jointly enclosed and form inwardly recessed injection cavity 14, the ejection mechanism 2 includes push plate 21 and the ejection assembly 22 between the push plate 21 and the rear mould 1, fixedly equipped with ejector pin one 23 on the ejection assembly 22, another end of ejector pin one 23 passes through rear mould 1 and rear mould kernel 11 and extends to injection cavity 14, ejector pin one 23 is used to be in the product 5 injection molding after the action under external force and be inwards from injection cavity 14 strong and take out product 5, fixedly equipped with ejector pin two 24 on the push plate 21, another end of ejector pin two 24 sequentially passes through ejection assembly 22, rear mould 1, rear mould kernel 11 and the fixed connection of insert piece one 12;Because the product 5 of the utility model is the structure that multilayered reverse buckling and reverse buckling part direction and size are different, once ejecting technique is easy to cause damage to reverse buckling part, so the utility model is secondary ejecting product 5 by setting the push plate 21 and the ejection assembly 22 cooperation.
[0040] As Figures 3-6 Need to be added, as shown in the utility model further includes the same front mould 4 and front mould kernel 41 with the rear mould 1 structure, the fixed connection of upper insert piece two 42 and several upper ejector pin one 43 with the same structure of insert piece two 13 is on the front mould kernel 41, when front mould 4 and rear mould 1 close mould, the injection cavity 14 of the same upper and lower structure is formed product 5 after injection cooling, when opening mould, front mould 4, front mould kernel 41 and upper insert piece two 42 are synchronously moved upwards, upper ejector pin one 43 is stopped product 5 unmoved, makes product 5 from front mould kernel 41 and upper insert piece two 42 strong and take out, when product 5 and front mould kernel 41 separate, upper ejector pin one 43 will be synchronously moved upwards with front mould kernel 41, until product 5 has enough space from rear mould kernel 11 and separates.
[0041] Specifically, as Figures 7-9 The sliding assembly 3 includes fixed block one 31 fixedly arranged on the push plate 21, fixed block two 32 fixedly arranged on the bottom of the rear mould 1 and sliding block 33 slidably connected in the ejection assembly 22, the sliding block 33 is clamped with fixed block one 31 and is slidably connected with the inclined surface 321 of fixed block two 32, the sliding block 33 can be separated from fixed block one 31 by sliding along the inclined surface 321 of fixed block two 32.
[0042] When the product 5 and the insert 12 are separated from the back core 11, the insert 12 is separated from the product 5 to support the product 5 to ensure that the product 5 is balanced in the horizontal direction to prevent the product 5 from falling and being damaged. If the product 5 is not balanced, the product 5 will be tilted and the position of the undercut portion will be offset, which will cause damage to the product 5 and prevent the product 5 from being successfully ejected. During the ejection process, the slider 33 moves along the inclined surface 321 and is separated from the fixed block 31, so that the push plate 21, the ejector pin 24 and the insert 12 stop moving upward. At this time, the ejection mechanism 2 completes the first ejection, the product 5 is separated from the insert 13, and only a small part of the undercut area is still in the insert 13. During the second ejection, the ejector assembly 22 continues to move upward to separate the product 5 from the insert 13 and the insert 12.
[0043] Further, as shown in Figures 8-9 the fixed block 31 is provided with an inwardly recessed clamping groove 311, and one side of the slider 33 is provided with a protrusion 331 corresponding to the clamping groove 311. When the protrusion 331 is clamped with the clamping groove 311, the protrusion 331 moves upward and has an upward thrust against the clamping groove 311 to move the fixed block 31 upward, thereby moving the push plate 21 fixedly connected with the fixed block 31 upward.
[0044] Further, as shown in Figures 10-13 Since the push plate 21 moves to a certain height and no longer moves, the slider 33 is provided as a sliding member with an inclined surface. One side of the slider 33 is provided with a sliding surface 332 corresponding to the inclined surface 321 of the fixed block 32. The sliding surface 332 extends upward away from the fixed block 32, and the sliding surface 332 and the protrusion 331 are arranged on the same side of the slider 33. The purpose is to make the slider 33 slide upward along the inclined surface 321 while moving laterally, so that the protrusion 331 gradually moves away from the clamping groove 311. When the protrusion 331 is completely separated from the clamping groove 311, the protrusion 331 cannot move upward to move the fixed block 31 upward. When the ejector assembly 22 continues to move upward, the push plate 21 does not move, that is, the insert 12 does not move, so that the product 5 is separated from the insert 12, and the effect of demolding is finally achieved. The structure is simple and reasonable.
[0045] Specifically, as shown in Figure 14 The fixed block one 31 and the fixed block two 32 are slidingly connected in the through hole 221, and the fixed block one 31 and the fixed block two 32 are arranged side by side, so that the occupied space can be reduced. It should be noted that the sliding block 33 is also provided in the ejection assembly 22 and is slidingly connected with the sliding groove 224. The elastic element one 333 is arranged on the opposite end surface of the protruding block 331 of the sliding block 33 and is in elastic pressure with the ejection assembly 22, so that the protruding block 331 has a tendency to move towards the clamping groove 311. In the embodiment of the utility model, the elastic element one 333 is a spring or other elastic silica gel material. When the protruding block 331 is separated from the clamping groove 311 and the sliding block 33 continues to move upwards, the elastic element one 333 is in a compressed state. When the sliding block 33 moves downwards along with the ejection assembly 22 and the protruding block 331 is completely opposite to the clamping groove 311, the elastic element one 333 has a space for automatic recovery, and automatically recovers from the compressed state to the stretched state, so as to apply an elastic pressure to the direction of the protruding block 331, so that the protruding block 331 moves towards the clamping groove 311 and is clamped, thereby driving the fixed block one 31 to move downwards synchronously, that is, the push plate 21 moves downwards along with the ejection assembly 22 and is reset. Another embodiment in which the sliding block 33 drives the fixed block one 31 to move downwards synchronously is that a magnetic attraction block that repels each other is arranged on the opposite end surface of the protruding block 331 of the sliding block 33 and repels each other with the ejection assembly 22. When the sliding block 33 moves downwards along with the ejection assembly 22 and the protruding block 331 is completely opposite to the clamping groove 311, the magnetic attraction blocks that repel each other are automatically separated, so that the sliding block 33 moves towards the clamping groove 311 and is clamped, thereby achieving the effect that the sliding block 33 drives the fixed block one 31 to move downwards synchronously.
[0046] Further, as shown in Figures 15-16 The insert two 13 is provided with a plurality of reverse buckling grooves 131 communicated with the injection cavity 14, and the reverse buckling grooves 131 are arranged along the length direction of the injection cavity 14 at intervals. The insert two 13 further includes a plurality of insert plates one 132 and insert plates two 133 arranged in a staggered and stacked manner along the length direction of the injection cavity 14, and the insert plate one 132 and the adjacent insert plate two 133 jointly enclose the reverse buckling groove 131. The reverse buckling groove 131 is formed in the staggered and stacked manner of a plurality of the insert plate one 132 and the insert plate two 133, so that the processing of the reverse buckling groove 131 is simpler and more convenient, and the problem of difficult processing of the traditional reverse buckling is solved, and the production cost is saved.
[0047] Further, as shown in the drawings, Figure 17 Further, as shown in the drawings, Further, as shown in the drawings,
[0048] The working principle of the utility model is described in detail as follows:
[0049] When the injection molding is completed, the front mold 4 and the front mold core 41 move upward, the upper ejector pin one 43 pushes against the product 5 to make the product 5 separate from the front mold core 41, then the upper ejector pin one 43 moves upward to ensure that the product 5 has enough space to separate from the rear mold core 11; then, the ejector assembly 22 moves upward to drive the ejector pin one 23 upward to separate the product 5 from the rear mold core 11 and the insert two 13, at this time, under the action of the sliding block 33, the push plate 21 moves upward synchronously to drive the insert one 12 to move upward synchronously, when the sliding block 33 moves to a certain distance, the push plate 21 no longer moves upward with the ejector assembly 22, therefore, the ejector pin one 23 can separate the product 5 from the insert one 12, thereby completely realizing demolding.
[0050] The utility model discloses an innovation point lies in through setting up sliding assembly to make when first time ejecting can synchronous drive insert one synchronous sliding, make product when first time ejecting can keep balance in horizontal direction, thereby make the reverse buckling portion can smoothly strong and take out, then make insert one keep unmoved when second time ejecting to make product separate from insert one, thereby realize to the smooth demolding of the product with reverse buckling structure, simple structure, and flexible use, second, the utility model still sets up the insert two and the reverse buckling groove that are composed of the insert board that mutually stacks, simple structure, and the production difficulty greatly reduces, thereby make the reverse buckling groove processing more convenient, more save production cost.
[0051] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.
[0052] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.
Claims
1. A front and rear strong release structure of a door buckle, characterized by, The utility model relates to a back mould (1), set up in the ejection mechanism (2) and sliding assembly (3) below the back mould (1), be equipped with back mould kernel (11) on the back mould (1), the inlay piece one (12) and fixedly connected inlay piece two (13) are slidably connected respectively on the back mould kernel (11), the back mould kernel (11), inlay piece one (12) and the inlay piece two (13) jointly enclose and form the inward recessed injection cavity (14), the ejection mechanism (2) includes push plate (21) and sets up the ejector assembly (22) between push plate (21) and back mould (1), the fixed top pin one (23) of ejector assembly (22), the other end of top pin one (23) passes through back mould (1) and back mould kernel (11) and extends to injection cavity (14) inside, the fixed top pin two (24) of push plate (21), the other end of top pin two (24) passes through ejector assembly (22), back mould (1), back mould kernel (11) and fixedly connected inlay piece one (12) in proper order, The sliding assembly (3) includes a fixed block one (31) fixed to the push plate (21), a fixed block two (32) fixed to the bottom of the back mould (1), and a sliding block (33) slidingly connected in the ejector assembly (22), the sliding block (33) is connected with the fixed block one (31) and the inclined surface (321) of the fixed block two (32), and the sliding block (33) slides along the inclined surface (321) of the fixed block two (32) to separate the sliding block (33) and the fixed block one (31).
2. The front and rear strong release structure of a vehicle door buckle according to claim 1, characterized in that, The fixed block one (31) is provided with an inward recessed clamping groove (311), one side of the sliding block (33) is provided with a protrusion (331) corresponding to the clamping groove (311), and the protrusion (331) is slidingly connected with the clamping groove (311).
3. The front and rear strong release structure of a vehicle door buckle according to claim 2, characterized in that, One side of the sliding block (33) is provided with a sliding surface (332) corresponding to the inclined surface (321), and the sliding surface (332) and the protrusion (331) are arranged on the same side of the sliding block (33).
4. The front and rear strong release structure of a vehicle door buckle according to claim 3, characterized in that, The sliding surface (332) of the sliding block (33) extends upward away from the fixed block two (32), so that when the sliding block (33) slides upward along the inclined surface (321), the protrusion (331) moves away from the clamping groove (311).
5. The front and rear strong release structure of a vehicle door buckle according to claim 4, characterized in that, An elastic member one (333) is arranged on the opposite end surface of the protrusion (331) of the sliding block (33) and elastically presses the ejector assembly (22), so that the protrusion (331) tends to move towards the clamping groove (311).
6. The front and rear strong release structure of a vehicle door buckle according to claim 5, characterized in that, The ejector assembly (22) is provided with a through hole (221) communicating upward and downward, the fixed block one (31) and the fixed block two (32) are slidingly connected in the through hole (221), and the fixed block one (31) and the fixed block two (32) are arranged side by side.
7. The front and rear strong release structure of a vehicle door buckle according to claim 1, characterized in that, The insert two (13) is internally provided with a plurality of undercut grooves (131) in communication with the injection cavity (14), and the undercut grooves (131) are arranged along the length direction of the injection cavity (14) at intervals.
8. The front and rear strong release structure of a vehicle door buckle according to claim 7, characterized in that, The insert two (13) comprises a plurality of insert plates one (132) and insert plates two (133) arranged in an interlaced and stacked manner along the length direction of the injection cavity (14), and the insert plate one (132) and the adjacent insert plate two (133) jointly enclose the undercut groove (131).
9. The front and rear strong release structure of a door buckle according to claim 1, characterized in that, The ejection assembly (22) is fixedly provided with a plurality of guide columns (222), one end of the guide column (222) is fixedly connected with the rear mold (1), and the guide column (222) has a guiding effect on the ejection of the ejection assembly (22).
10. The front and rear strong release structure of a door buckle according to claim 9, wherein, The guide column (222) is sleeved with an elastic member two (223), and the two ends of the elastic member two (223) are respectively elastically pressed against the bottom of the rear mold (1) and the top of the ejection assembly (22).