Large-angle inclined pulling structure

Abstract

The utility model provides a wide-angle inclined pulling structure, which comprises a front mold, a plate B, a supporting plate, a rear mold core, a sliding seat and an inclined insert, the front mold and the supporting plate are respectively and movably arranged on two sides of the plate B, the rear mold core is arranged on one side, close to the front mold, in the plate B, the sliding seat comprises a fixed end and a sliding guide end, the fixed end is embedded and fixed in the supporting plate along a first direction, and the inclined insert is embedded in the supporting plate along a second direction. The sliding guide end can be inserted into the plate B in a sliding mode in the first direction, the side, close to the center of the rear mold core, of the sliding guide end is an inclined face, and the projection, in the first direction, of the sliding guide end is located in the section contour, perpendicular to the first direction, of the fixed end; the inclined insert is used for being matched with the rear mold core and the front mold to form a cavity of an injection product with a large-angle inclined buckle on the rear mold side, the other end of the inclined insert can be clamped on the inclined face of the sliding guide end in a sliding mode along the inclined face of the sliding guide end, and the included angle between the inclined insert and the inclined face of the sliding guide end is larger than 90 degrees.

Description

Technical Field

[0001] This utility model relates to the field of precision and complex injection mold technology for non-standard parts, and in particular to a large-angle oblique pulling 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 large angled snap-fit ​​of more than 30 degrees on the rear mold part, for example, Figure 2 As shown in the injection molded product 101, the oblique guide post is difficult to completely disengage from the undercut when pulling the core laterally. Therefore, how to avoid damaging the large-angle oblique clip of the injection molded product during mold opening becomes a problem that needs to be solved. Utility Model Content

[0004] The purpose of this invention is to solve the problem of how to avoid damaging the large-angle angled snap of the injection molded product during mold opening.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A large-angle oblique pull structure is used to eject a large-angle oblique clip from the mold side of an injection-molded product at a first angle. The large-angle oblique pull structure includes: a front mold, a B-plate, a support plate, a rear mold core, a slide block, and an oblique insert. The front mold and the support plate are respectively located on opposite sides of the B-plate. During mold opening, after the support plate moves away from the B-plate along a first direction, the B-plate moves away from the front mold along the first direction. The rear mold core is located inside the B-plate on the side closer to the front mold. The slide block includes a fixed end and a guide end. The fixed end is embedded and fixed in the support plate along the first direction, and the guide end is slidably inserted into the B-plate along the first direction. The side closest to the center of the rear mold core is an inclined surface. The projection of the guide slide end along the first direction is located within the cross-sectional profile perpendicular to the first direction on the fixed end. One end of the inclined insert is inserted obliquely through the B plate at a first angle and enters the rear mold core. It is used to cooperate with the rear mold core and the front mold to form the cavity of the injection molded product with a large-angle oblique buckle on the rear mold side. The other end of the inclined insert can be slidably locked on the inclined surface of the guide slide end. The included angle between the inclined insert and the inclined surface of the guide slide end is greater than 90 degrees. It is used to pull the inclined insert to complete the buckling when the guide slide end moves away from the B plate.

[0007] Optionally, a T-groove is provided on the inclined surface of the guide end, and the other end of the inclined insert is T-shaped and can be slidably locked in the T-groove along the inclined surface of the guide end.

[0008] Preferably, when the beveled insert is released, the other end of the beveled insert remains embedded in the T-slot.

[0009] Preferably, the T-shaped slot is a through slot.

[0010] Optionally, the middle part of the inclined insert is provided with a limiting step, and the direction of the inclined insert inserted into the back core is perpendicular to the step surface of the limiting step.

[0011] Optionally, the top of the guide and sliding end is a flat surface.

[0012] Optionally, the sliding seat is an integrally formed part.

[0013] Optionally, the fixed end is detachably embedded and fixed in the supporting plate.

[0014] Preferably, the fixed end is detachably embedded and fixed in the supporting plate through the first bolt.

[0015] Preferably, the first bolt is inserted into the supporting plate from the side of the supporting plate away from the B plate along the first direction.

[0016] Compared with the prior art, the large-angle inclined pulling structure has a simple structure, a clever design, a good tripping effect, and can perfectly pull out the large-angle inclined buckle of the back mold of the injection molding product, thereby greatly improving the quality of the injection molding product. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 It is a structural schematic view of a common injection mold with a back mold and a supporting plate.

[0019] Figure 2 It is a structural schematic view of the large-angle inclined pulling structure before tripping of an embodiment of the present application.

[0020] Figure 3 It is a structural schematic view of the large-angle inclined pulling structure after tripping of an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to further understand the purpose, structure, features, and functions of the present application, the following will be described in detail in conjunction with the embodiments.

[0022] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0023] As shown in Figure 1 , the commonly used back mold with a supporting plate injection mold generally comprises: a panel 91, an A plate 92, a front mold 93, a B plate 94, a supporting 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 93 belong to the front mold, the B plate 94, the supporting 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 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 supporting 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 supporting plate 95, and the other end is fixed on the bottom plate 97, when the mold is opened, the bottom plate 97 pulls the supporting plate 95 away from the B plate through the cushion block 96, when the distance away reaches the preset displacement on the opener 98, the supporting 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.

[0024] Please refer to Figure 2 and Figure 3 , the utility model discloses a large angle oblique extraction structure 100 for the large angle oblique buckle of the first angle a of the back mold side of injection product 101, and the large angle oblique extraction structure 100 comprises: front mold 1, B plate 2, supporting plate 3, back mold 4, sliding seat 5 and oblique insert 6.

[0025] The front mold 1 and the supporting plate 3 are arranged on the two sides of the B plate 2 respectively, after the supporting plate 3 is away from the B plate 2 along the first direction X when the mold is opened, the B plate 2 is away from the front mold 1 along the first direction X. At this time, the openers can be arranged on the side of the B plate 2 and the supporting plate 3 to realize the separation movement of the supporting plate 3 and the B plate 2 in sequence.

[0026] The back mold 4 is arranged on the side of the B plate 2 close to the front mold 1.

[0027] The sliding seat 5 comprises a fixed end 51 and a guide sliding end 52, the fixed end 51 is embedded and fixed in the supporting plate 3 along the first direction X, the guide sliding end 52 is slidably inserted in the B plate 2 along the first direction X, one side of the guide sliding end 52 close to the center of the back mold 4 is an inclined surface 521, and the projection of the guide sliding end 52 along the first direction X is located in the cross-sectional profile perpendicular to the first direction X on the fixed end 51.

[0028] One end of the inclined insert 6 is inserted through the B plate at a first angle a and enters the rear mold core 4, which is used to cooperate with the rear mold core 4 and the front mold 1 to form a mold cavity of the injection molded product 101 with a large-angle inclined buckle on the rear mold side. The other end of the inclined insert 6 is slidably clamped on the inclined surface 521 of the guide sliding end 52, and the included angle c between the inclined insert 6 and the inclined surface 521 of the guide sliding end 52 is greater than 90 degrees, which is used to pull the inclined insert 6 to complete the unlocking when the guide sliding end 52 moves away from the B plate 2. The included angle c greater than 90 degrees facilitates the sliding of the inclined insert 6, and can effectively prevent the inclined insert 6 from being self-locked on the guide sliding end 52 when the inclined surface 521 of the guide sliding end 52 is perpendicular to the inclined insert 6, so that the inclined insert 6 cannot slide.

[0029] Optionally, a T-shaped groove 522 is formed on the inclined surface 521 of the guide sliding end 52, and the other end of the inclined insert 6 is T-shaped and is slidably clamped in the T-shaped groove 522. In this way, the T-shaped clamping facilitates the stable sliding of the inclined insert 6 along the inclined guide sliding end 52.

[0030] Preferably, when the inclined insert 6 completes the unlocking, the other end of the inclined insert 6 is still embedded in the T-shaped groove 522. In this way, the stable unlocking of the inclined insert 6 can be ensured.

[0031] Preferably, the T-shaped groove 522 is a through groove. In this way, the inclined insert 6 can be loaded from both sides of the guide sliding end 52.

[0032] Optionally, a limiting step 60 is arranged in the middle of the inclined insert 6, and the direction in which the inclined insert 6 is inserted into the rear mold core 4 is perpendicular to the step surface of the limiting step 60. In this way, the inclined insert can be accurately reset through the limiting step 60 during mold closing.

[0033] Optionally, the top of the guide sliding end 52 is a flat surface. In this way, the sliding seat 5 can be accurately reset during mold closing.

[0034] Optionally, the sliding seat 5 is an integrally formed member. In this way, the structure is stable, and the guiding precision is high.

[0035] Optionally, the fixed end 51 is detachably embedded and fixed in the supporting plate 3. In this way, the sliding seat 5 can be easily assembled and disassembled.

[0036] Preferably, the fixed end 51 is detachably embedded and fixed in the supporting plate 3 through the first bolt 511. In this way, the sliding seat 5 can be more conveniently assembled and disassembled.

[0037] Preferably, the first bolt 511 is inserted into the supporting plate 3 from the side of the supporting plate 3 away from the B plate 2 along the first direction X. In this way, the sliding seat 5 and the first bolt can be easily assembled and disassembled.

[0038] The operation process of the large-angle inclined pulling structure 100 in an embodiment of the utility model is as follows:

[0039] When the mold is opened, the support plate 3 first moves away from the B plate 2, drives the fixed end 51 of the sliding seat 5 to move in the first direction X, and the inclined insert 6 starts to be obliquely pulled away from the large-angle inclined buckle of the injection molding product 101 under the pull of the inclined surface 521 of the guide sliding end 52, at this time, the inclined insert 6 slides upward relative to the inclined surface 521 of the guide sliding end 52 to make room, and when the inclined insert 6 completely separates from the large-angle inclined buckle of the injection molding product 101, the support plate 3 drives the B plate 2 to start moving away from the front mold 1, and the mold opening is completed.

[0040] The large-angle oblique pulling structure is simple in structure, ingenious in design, good in demolding effect, can perfectly eject the injection molding product with an inclined buckle, and greatly improves the quality of the injection molding product.

[0041] 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, changes and decorations made without departing from the spirit and scope of the utility model are all within the scope of patent protection of the utility model.

Claims

1. A large-angle oblique pull structure for ejecting a large-angle oblique clip at a first angle from the mold side of an injection-molded product, characterized in that, The large-angle inclined pulling structure comprises a front die, a B plate, a supporting plate, a rear die core, a sliding seat and an inclined insert; The front die and the supporting plate are respectively arranged on two sides of the B plate, and when the supporting plate is away from the B plate along a first direction, the B plate is away from the front die along the first direction; The rear die core is arranged in the B plate close to one side of the front die; The sliding seat comprises a fixed end and a guide sliding end, the fixed end is embedded and fixed in the supporting plate along the first direction, the guide sliding end is inserted in the B plate along the first direction, one side of the guide sliding end close to the center of the rear die core is an inclined surface, and a projection of the guide sliding end along the first direction is located in a cross-sectional profile of the fixed end perpendicular to the first direction; One end of the inclined insert is inserted through the B plate at a first angle and enters the rear die core, used for cooperating with the rear die core and the front die to form a mold cavity of an injection molded product with a large-angle inclined side of the rear die, the other end of the inclined insert is clamped on the inclined surface of the guide sliding end along the inclined surface of the guide sliding end, and the included angle between the inclined insert and the inclined surface of the guide sliding end is greater than 90 degrees, used for pulling the inclined insert to complete the unlocking when the guide sliding end is away from the B plate.

2. The high-angle skewed-structured cell of claim 1, wherein, A T-shaped groove is arranged on the inclined surface of the guide sliding end, and the other end of the inclined insert is T-shaped and clamped in the T-shaped groove along the inclined surface of the guide sliding end.

3. The high-angle skewed extraction structure of claim 2, wherein, When the inclined insert is completely unlocked, the other end of the inclined insert is still embedded in the T-shaped groove.

4. The high-angle skewed extraction structure of claim 2, wherein, The T-shaped groove is a through groove.

5. The high-angle skewed extraction structure of claim 1, wherein, A limiting step is arranged in the middle of the inclined insert, and the direction of the insertion of the inclined insert into the rear die core is perpendicular to the step surface of the limiting step.

6. The high-angle skewed extraction structure of claim 1, wherein, The top of the guide sliding end is a flat surface.

7. The high-angle skewed extraction structure of claim 1, wherein The sliding seat is an integral molding part.

8. The high-angle skewed extraction structure of claim 1, wherein, The fixed end is detachably embedded and fixed in the supporting plate.

9. The high-angle skewed extraction structure of claim 8, wherein, The fixed end is detachably embedded and fixed in the supporting plate by a first bolt.

10. The high-angle skewed extraction structure of claim 9, wherein, The first bolt is inserted into the supporting plate from the side of the supporting plate away from the B plate along the first direction.

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