Front mold slide structure
By designing the front mold slide structure and utilizing the coordinated movement of the lateral slider and core-pulling pin guided by the inclined guide pillar, the core-pulling problem of lateral through holes and longitudinal undercut injection molded products was solved, thus improving the quality of injection molded products.
Patent Information
- Application Number
- CN202423269217.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing technologies are not effective in achieving lateral core pulling for injection molded products with side through holes in the front mold section and longitudinal undercuts on the core pulling side of the through holes, which can easily lead to damage to the undercuts.
The front mold slide structure includes an A plate, a B plate, a support plate, a front mold core, a side slide, a core-pulling pin, and an inclined guide pillar. Through the guiding effect of the inclined guide pillar, the side slide and the core-pulling pin move in a specific direction when the mold is opened, thus achieving side core pulling.
This technology enables stable lateral core pulling in injection molded products with a lateral through-hole in the front mold section and a longitudinal undercut on the core pulling side of the through-hole, thereby improving the quality of the injection molded products.
Smart Images
Figure CN223573713U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of precision and complex mold technology for non-standard parts, and in particular relates to a front mold sliding structure. Background Technology
[0002] When the extension direction of the bosses, holes, and grooves of a product is inconsistent with the mold opening direction, a snap-fit (undercut) will be formed. In this case, the mold needs to first add a core-pulling mechanism on the side so that the undercut can be disengaged. Among them, one of the most commonly used mechanisms is the inclined guide post side core-pulling structure.
[0003] However, when the injection molded product has a side through hole in the front mold and the through hole core-pulling side also has a longitudinal undercut, for example, Figure 2 For the injection molded product 101 shown, if the oblique guide post is used for lateral core pulling when separating plate A and plate B, the undercut is easily damaged. Therefore, how to achieve lateral core pulling for injection molded products with lateral through holes in the front mold and longitudinal undercuts on the through hole core pulling side has become a problem that needs to be solved. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a front mold sliding structure to solve the problem of how to achieve lateral core pulling in injection molded products where the front mold has lateral through holes and the core pulling side of the through holes also has longitudinal undercuts.
[0005] To achieve the above objectives, this utility model provides a front mold sliding structure for lateral core pulling along a first direction. It includes: an A plate, a B plate, a support plate, a front mold core, a rear mold core, a side slider, a core-pulling pin, and an inclined guide post. The A plate and the support plate are respectively disposed on opposite sides of the B plate. During mold opening, after the support plate moves away from the B plate along a second direction, the B plate moves away from the A plate along the second direction. The front mold core is disposed within the A plate on the side closer to the B plate, and the rear mold core is disposed within the B plate on the side closer to the A plate. The side slider is slidably mounted on the A plate on the side closer to the B plate along the first direction. The side slider position is located along the first direction on the front mold core. On the side, one end of the core-pulling pin is fixed inside the side slider, and the other end of the core-pulling pin is inserted into the front mold core along the first direction to form a side through hole in the front mold part of the injection molded product. The inclined guide post includes a fixed part and a guide part. One end of the fixed part is fixed on the support plate, and the other end of the fixed part can slide through the B plate along the second direction and connect with the guide part. The guide part is inclined and inserted into the side slider before mold opening. The guide part is inclined and displaced in the first direction to guide the side slider to move a first displacement along the first direction when the mold is opened. The projection of the guide part along the second direction is located in the cross-sectional profile of the fixed part perpendicular to the second direction.
[0006] Optionally, one end of the core-pulling pin can be detachably fixed inside the side slider.
[0007] Preferably, the lateral slider includes a first slider and a second slider, the second slider is detachably fixed to the first slider along a first direction, one end of the core-pulling needle is inserted and fixed in the second slider, and one end of the core-pulling needle is close to the first slider.
[0008] Preferably, the second slider is located inside the front mold core before the lateral core pulling.
[0009] Preferably, the second slider is detachably fixed to the first slider along the first direction by the first bolt.
[0010] Preferably, the first bolt is provided in multiple parts, which are located on both sides of the core-pulling pin.
[0011] Optionally, one end of the fixing part can be detachably fixed to the tray.
[0012] Preferably, the inclined guide post is a one-piece molded part.
[0013] Optionally, the distance between the pallet and plate B in the second direction after mold opening is greater than the depth of the guide slide inserted into the lateral slider before mold opening.
[0014] Optionally, a ball screw is provided on the side of the A plate near the lateral slider, and a first limiting half hole and a second limiting half hole are provided on the side of the lateral slider near the A plate. The ball screw is set in the first limiting half hole before mold opening, and the distance between the first limiting half hole and the second limiting half hole is equal to the first displacement.
[0015] Compared with the prior art, the front mold sliding structure provided by this utility model is ingeniously designed and has a good core-pulling effect. It can effectively realize the side core-pulling of injection molded products with side through holes in the front mold part and longitudinal undercuts on the through hole core-pulling side, which greatly improves the quality of injection molded products. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of a commonly used injection mold with a support plate in the rear mold.
[0018] Figure 2 This is a schematic diagram of the front mold sliding structure before side core pulling, according to an embodiment of the present invention.
[0019] Figure 3 This is a schematic diagram of the front mold sliding structure after side core pulling is completed, according to an embodiment of the present invention. DETAILED DESCRIPTION
[0020] In order to make the purpose, structure, characteristics and functions of the utility model have further understanding, detailed description is as follows with example.
[0021] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0022] As shown in Figure 1 The commonly used injection mold with the back plate generally comprises a panel 91, an A plate 92, a front mold core 93, a B plate 94, a back plate 95, a cushion block 96, a bottom plate 97 and an opener 98, wherein the panel 91, the A plate 92 and the front mold core 93 belong to the front mold, the B plate 94, the back plate 95, the cushion block 96, the bottom plate 97 and the opener 98 belong to the back mold, the panel 91 is fixed with the A plate 92, the front mold core 93 is embedded and fixed on the side of the A plate 92 away from the panel 91, the B plate 94 is detachably arranged on the side of the A plate 92 away from the panel 91, the back plate 95 is arranged on the side of the B plate 94 away from the A plate by the opener 98 with a detachable interval, one end of the cushion block 96 is fixed on the back plate 95, and the other end is fixed on the bottom plate 97, when the mold is opened, the bottom plate 97 pulls the back plate 95 away from the B plate through the cushion block 96, when the interval away reaches the preset displacement on the opener 98, the back plate 95 pulls the B plate 94 through the opener 98, so that the B plate 94 is away from the A plate 92, and the mold opening is completed.
[0023] Please refer to Figure 2 and Figure 3 The utility model provides a front mold position structure 101 for lateral core-pulling of the front mold along the first direction X, comprising an A plate 1, a B plate 2, a back plate 3, a front mold core 4, a back mold core 5, a lateral slider 6, a core-pulling needle 7 and an inclined guide pillar 8.
[0024] The A plate 1 and the back plate 3 are arranged on the two sides of the B plate 2 respectively, after the back plate 3 leaves the B plate 2 along the second direction Y when the mold is opened, the B plate 2 is away from the A plate 1 along the second direction Y. At this time, the openers can be arranged on the side of the B plate 2 and the back plate 3 to realize the separation movement of the back plate 3 and the B plate 2 in sequence.
[0025] The front mold core 4 is arranged in the A plate 1 on the side close to the B plate 2.
[0026] The back mold core 5 is arranged in the B plate 2 on the side close to the A plate 1.
[0027] The lateral slider 6 is slidably hung on the A plate 1 near one side of the B plate 2 along the first direction X, and the lateral slider 6 is arranged on the side of the front mold core 4 along the first direction X.
[0028] One end of the core-pulling pin 7 is fixed in the lateral slider 6, and the other end of the core-pulling pin 7 is inserted in the front mold core 4 along the first direction X for forming a lateral through hole of the front mold part of the injection product 101.
[0029] The inclined guide pillar 8 includes a fixed part 81 and a sliding guide part 82, one end of the fixed part 81 is fixed on the supporting plate 3, the other end of the fixed part 81 is slidably inserted in the B plate 2 and connected with the sliding guide part 82 along the second direction Y, the sliding guide part 82 is obliquely inserted in the lateral slider 6 before mold opening, the sliding guide part 82 is obliquely displaced by the first displacement L along the first direction X for guiding the lateral slider 6 to run the first displacement L along the first direction X when the mold is opened, and the projection of the sliding guide part 82 along the second direction Y is located in the cross-sectional profile of the fixed part 81 perpendicular to the second direction Y. In this way, the sliding guide part 82 can be withdrawn into the B plate 2.
[0030] Optionally, one end of the core-pulling pin 7 is detachably fixed in the lateral slider 6. In this way, the core-pulling pin 7 can be easily disassembled and maintained.
[0031] Preferably, the lateral slider 6 includes a first slider 61 and a second slider 62, the second slider 62 is detachably fixed and connected to the first slider 61 along the first direction X, one end of the core-pulling pin 7 is inserted and fixed in the second slider 62, and the other end of the core-pulling pin 7 abuts against the first slider 61. In this way, the core-pulling pin 7 can be easily disassembled and fixed.
[0032] Preferably, the second slider 62 is just located in the front mold core 4 before lateral core-pulling. In this way, the size of the B plate 2 along the first direction X can be reduced.
[0033] Preferably, the second slider 62 is detachably fixed and connected to the first slider 61 along the first direction X by the first bolt 63. In this way, the core-pulling pin 7 can be more easily disassembled.
[0034] Preferably, the first bolt 63 is provided with a plurality of bolts, which are arranged on both sides of the core-pulling pin 7. In this way, the core-pulling pin 7 is more stable.
[0035] Optionally, one end of the fixed part 81 is detachably fixed on the supporting plate 3. In this way, the inclined guide pillar 8 can be easily disassembled and maintained.
[0036] Preferably, the inclined guide pillar 8 is an integral molded part. Such a structure is more stable and easy to process.
[0037] Optionally, the distance S between the supporting plate 3 and the B plate 2 along the second direction Y after mold opening is greater than the depth H of the sliding guide part 82 inserted in the lateral slider 6 before mold opening. In this way, the inclined guide pillar 8 can be fully withdrawn from the lateral slider 6.
[0038] Optionally, a wave bead screw 11 is arranged on the A plate 1 near one side of the lateral slider 6, and the lateral slider 6 is provided with a first limiting half hole 64 and a second limiting half hole 65 near one side of the A plate 1, the wave bead screw 11 is arranged on the first limiting half hole 64 before the mold is opened, and the distance between the first limiting half hole 64 and the second limiting half hole 65 is equal to the first displacement L. In this way, the positioning of the lateral slider 6 before and after the lateral core-pulling can be assisted, and the random sliding of the lateral slider 6 can be prevented.
[0039] The operation process of the front mold position structure 101 of the embodiment of the utility model is as follows:
[0040] When the mold is opened, the supporting plate 3 first moves away from the B plate 2, drives the fixed part 81 of the inclined guide column 8 to move along the second direction Y, and drives the lateral slider 6 to move along the first direction X under the pulling of the guide sliding part 82. When the guide sliding part 82 is separated from the lateral slider 6, the lateral slider 6 drives the core-pulling needle 7 to move along the first direction X by the first displacement L, completely separates from the lateral through hole of the front mold part of the injection molding product 101, and then the supporting plate 3 drives the B plate 2 to move away from the A plate 1, and the front mold core 4 and the rear mold core 5 complete the mold opening.
[0041] The front mold position structure provided by the utility model has the advantages of ingenious design, good core-pulling effect, and can realize the lateral core-pulling of the injection molding product with the lateral through hole in the front mold part and the longitudinal undercut on the through hole core-pulling side, and greatly improves the quality of the injection molding product.
[0042] The utility model has been described by the above related embodiments, however, the above embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the changes and decorations made without departing from the spirit and scope of the utility model are all within the scope of the patent protection of the utility model.
Claims
1. A front mold sliding structure for performing lateral core pulling of the front mold along a first direction, characterized in that, The front mold row position structure comprises an A plate, a B plate, a supporting plate, a front mold core, a rear mold core, a lateral slider, a core-pulling needle and an inclined guide column. The A plate and the supporting plate are respectively arranged on both sides of the B plate, and after the supporting plate moves away from the B plate along a second direction, the B plate moves away from the A plate along the second direction. The front mold core is arranged in the A plate close to one side of the B plate. The rear mold core is arranged in the B plate close to one side of the A plate. The lateral slider is arranged on one side of the A plate close to the B plate and can slide along the first direction. One end of the core-pulling needle is fixed in the lateral slider, and the other end of the core-pulling needle is inserted into the front mold core along the first direction to form a lateral through hole of a front mold part of an injection product. The inclined guide column comprises a fixed part and a guide sliding part, one end of the fixed part is fixed on the supporting plate, the other end of the fixed part is inserted through the B plate along the second direction and connected with the guide sliding part, the guide sliding part is obliquely inserted into the lateral slider before mold opening, the guide sliding part is obliquely displaced in the first direction, and the projection of the guide sliding part along the second direction is located in the cross-sectional profile of the fixed part perpendicular to the second direction.
2. The front mold row bit structure of claim 1, wherein, One end of the core-pulling needle is detachably fixed in the lateral slider.
3. The front mold row bit structure of claim 2, wherein, The lateral slider comprises a first slider and a second slider, the second slider is detachably fixed and connected to the first slider along the first direction, one end of the core-pulling needle is inserted and fixed in the second slider, and the other end of the core-pulling needle abuts against the first slider.
4. The front mold row bit structure of claim 3, wherein, The second slider is just located in the front mold core before lateral core pulling.
5. The front mold land structure of claim 3, wherein The second slider is detachably fixed and connected to the first slider along the first direction by a first bolt.
6. The front mold row bit structure of claim 5, wherein, The first bolt is provided with a plurality of bolts arranged on both sides of the core-pulling needle.
7. The front mold layout structure of claim 1, wherein One end of the fixed part is detachably fixed on the supporting plate.
8. The front mold layout structure of claim 7, wherein, The inclined guide column is an integral part.
9. The front mold layout structure of claim 1, wherein, The distance between the supporting plate and the B plate along the second direction after mold opening is greater than the depth of the guide sliding part inserted into the lateral slider before mold opening.
10. The front mold layout structure of claim 1, wherein, A wave bead screw is arranged on one side of the A plate close to the lateral slider, a first limiting half hole and a second limiting half hole are arranged on one side of the lateral slider close to the A plate, the wave bead screw is arranged on the first limiting half hole before mold opening, and the distance between the first limiting half hole and the second limiting half hole is equal to the first displacement.