Special-shaped inclined hole side core-pulling structure

Abstract

The utility model relates to the field of injection molding, the utility model discloses a special shape inclined hole side core -pulling structure, include: back mould kernel, thimble fixed plate and line position mechanism, line position mechanism includes: line position seat, tunnel line position, guide block and line position insert, line position seat both ends are set up with the through -hole respectively and the forming face, line position seat inside is set up with the tunnel hole and horizontal slide groove, and the forming face, tunnel hole, horizontal slide groove and through -hole are connected in proper order along the straight line, and line position seat sets up the vertical slide groove, and the vertical slide groove is linked with horizontal slide groove, and tunnel line position is slidably arranged in the horizontal slide groove inside, and one end of guide block is set up on thimble fixed plate, and the other end of guide block is slidably arranged in the vertical slide groove inside, and tunnel line position and guide block are slidably connected and are inclined surface cooperation, and line position insert and tunnel line position are detachably connected through connecting piece. When opening the mould, the end of line position insert is inclined and drawn out from the special shape inclined hole on the product, realizes that line position seat and tunnel line position are demoulded along two different directions.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, and in particular to a side core-pulling structure with an irregularly shaped oblique hole. Background Technology

[0002] Injection molding is a mature molding technology widely used in electronic products such as mobile phones. The injection molding machine injects molten material into the mold cavity, which cools and solidifies to form a product of a specific shape. The product is then ejected by an ejection mechanism.

[0003] In the commonly used sliding mechanism structures in current molds, inclined guide pillars and shovel bases are used to achieve the backward and forward sliding movements of the sliding mechanism on the rear mold during mold opening and closing. Inserts on the sliding base are used to form holes of specific shapes on the product, and the orientation of the holes on the product must be consistent with the mold opening direction of the sliding base.

[0004] In molding Figure 5 When the injection molded product is shown, an irregularly shaped oblique hole 9 is opened on the product, and the orientation of the irregularly shaped oblique hole 9 is inclined to intersect with the parting surface of the product. This causes the insert to be unable to be demolded smoothly when the slide seat slides out of the mold, resulting in the irregularly shaped oblique hole 9 not being formed on the side of the product. Utility Model Content

[0005] The purpose of this utility model is to provide a non-circular oblique hole side core pulling structure, so as to realize the demolding of the slide seat and the tunnel slide in two different directions. When the mold is opened, the end of the slide insert is pulled out obliquely from the non-circular oblique hole on the product.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an irregularly shaped oblique hole side core-pulling structure, comprising: a rear mold core, an ejector pin fixing plate, and a sliding mechanism, wherein the sliding mechanism comprises:

[0007] A sliding seat is slidably disposed on the rear mold core. The sliding seat has a forming surface and a through hole at both ends. The sliding seat has a tunnel hole and a transverse slide groove inside. The forming surface, tunnel hole, transverse slide groove and through hole are connected in a straight line. The surface of the sliding seat near the ejector pin fixing plate has a vertical slide groove. The end of the vertical slide groove near the through hole is connected to the end of the transverse slide groove near the through hole.

[0008] The tunnel traveler is slidably disposed inside a transverse groove, and the sliding direction of the traveler seat is inclined to intersect the sliding direction of the tunnel traveler.

[0009] A guide block, one end of which is set on the ejector pin fixing plate, and the other end of which is slidably set inside the vertical groove. The tunnel travel position is slidably connected to the guide block and engaged with the inclined surface.

[0010] A traveler insert, which penetrates the tunnel traveler and is detachably connected to the tunnel traveler via a connector.

[0011] Preferably, when the mold is opened, the two ends of the sliding insert are respectively disposed inside the through hole and the tunnel hole; when the mold is closed, one end of the sliding insert penetrates through the forming surface, and the other end of the sliding insert is disposed inside the transverse groove.

[0012] Preferably, the connector is a pin or abutment screw.

[0013] Preferably, a guide groove is provided at one end of the tunnel travel position, a dovetail guide rail is provided at the upper end of the guide block, the dovetail guide rail is slidably connected to the guide groove, the extension direction of the guide groove intersects obliquely with the sliding direction of the guide block, the extension direction of the guide groove intersects obliquely with the sliding direction of the tunnel travel position, and the travel position insert passes through the upper end of the guide groove.

[0014] Preferably, the row insert is a conical structure with a rounded rectangular cross-section.

[0015] Preferably, the irregular oblique hole side core pulling structure further includes a cover plate, the row seat has a first groove, the cover plate is detachably disposed inside the first groove, and the transverse sliding groove is disposed in the middle of the bottom of the first groove.

[0016] Preferably, the cover plate includes a first plate and a second plate connected sequentially in a direction away from the forming surface, wherein the extending direction of the first plate is parallel to the sliding direction of the slide seat, and the extending direction of the second plate is parallel to the sliding direction of the tunnel slide.

[0017] Preferably, the irregular oblique hole side core pulling structure further includes a spring, which is clamped between the transverse slide and the tunnel travel position. The spring is located on the side of the tunnel travel position close to the forming surface. The tunnel travel position has a circular groove, and one end of the spring is located inside the circular groove.

[0018] Preferably, the end of the insert away from the molding surface is provided with a connecting structure, which is a threaded hole or a hook.

[0019] Preferably, the irregularly shaped oblique hole side core-pulling structure further includes an oblique ejector rod, the slide seat is provided with an oblique guide hole for the oblique ejector rod to pass through, the oblique guide hole is provided with a first oblique surface, and the oblique ejector rod is provided with a second oblique surface that cooperates with the first oblique surface; when the mold is closed, a gap is left between the first oblique surface and the second oblique surface.

[0020] The beneficial effects of this invention are as follows: During mold opening, the slide seat will move away from the rear mold core, and the distance between the ejector pin fixing plate and the slide seat will decrease. The ejector pin fixing plate drives the end of the guide block to enter the transverse slide from the vertical slide, generating relative displacement between the guide block and the tunnel slide. The guide block pushes the tunnel slide to move inside the transverse slide. During mold opening, the end of the slide insert is tilted out from the irregular angled hole on the product, realizing demolding of the slide seat and the tunnel slide in two different directions. Attached Figure Description

[0021] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0022] Figure 1 This is a schematic diagram of the irregular oblique hole side core-pulling structure provided in an embodiment of the present utility model;

[0023] Figure 2 Cross-sectional view of a positioning mechanism provided in an embodiment of the present invention Figure 1 ;

[0024] Figure 3 Cross-sectional view of a positioning mechanism provided in an embodiment of the present invention Figure 2 ;

[0025] Figure 4 An assembly drawing of the tunnel travel path and guide block provided in an embodiment of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of an injection-molded product with irregularly shaped oblique holes.

[0027] Markings in the diagram: 1: Rear mold core; 2: Slide seat; 3: Tunnel slide; 4: Guide block; 5: Slide insert; 6: Connector; 7: Molding surface; 8: Through hole; 9: Irregular angled hole. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] It should be noted that, in this utility model, unless otherwise stated, when an element is referred to as "set on" or "connected to" another element, it can be directly on the other element or may have an intervening element present simultaneously. "Inner" and "outer" refer to the inner and outer contours of a specific part. "Far" and "near" refer to the far and near relative to a certain component.

[0030] like Figures 1-4As shown in the figure, an embodiment of the present invention provides a non-circular oblique hole side core-pulling structure, including: a rear mold core 1, an ejector pin fixing plate, and a sliding mechanism, wherein the sliding mechanism includes:

[0031] The slide seat 2 is slidably disposed on the rear mold core 1. The slide seat 2 has a forming surface 7 and a through hole 8 at both ends. The slide seat 2 has a tunnel hole and a transverse slide groove inside. The forming surface 7, the tunnel hole, the transverse slide groove and the through hole 8 are connected in a straight line. The surface of the slide seat 2 near the ejector pin fixing plate has a vertical slide groove. The end of the vertical slide groove near the through hole is connected to the end of the transverse slide groove near the through hole 8.

[0032] Tunnel traveler 3, which is slidably disposed inside the transverse groove;

[0033] Guide block 4, one end of which is set on the ejector pin fixing plate, and the other end of which is slidably set inside the vertical groove. The tunnel travel position 3 is slidably connected to the guide block 4 and has an inclined surface fit.

[0034] The sliding insert 5 penetrates the tunnel sliding section 3 and is detachably connected to the tunnel sliding section 3 via a connector 6. The connector 6 is a pin or abutment screw.

[0035] During mold opening, the two ends of the sliding insert 5 are respectively positioned inside the through hole 8 and the tunnel hole; during mold closing, one end of the sliding insert 5 penetrates the forming surface 7, and the other end of the sliding insert 5 is positioned inside the transverse groove. During mold opening, the end of the sliding insert 5 away from the forming surface 7 will enter the through hole 8. After removing the sliding insert 5 from the tunnel slide 3, the sliding insert 5 can be pulled out from inside the through hole 8 without disassembling the mold, allowing the sliding insert 5 to be replaced without stopping the machine.

[0036] The connector 6 is a pin or abutment screw. By pulling out the pin or loosening the abutment screw, the sliding insert 5 can be removed from the tunnel insert.

[0037] The sliding direction of the traveler seat 2 is perpendicular to the sliding direction of the guide block 4, and the sliding direction of the tunnel traveler 3 is perpendicular to the sliding direction of the guide block 4. The guide block 4 slides vertically and drives the tunnel traveler 3 to slide horizontally through the engagement of the inclined plane.

[0038] The tunnel traveler 3 has a guide groove at one end, which is inclined. The guide block 4 has a dovetail guide rail at its upper end, which is slidably connected to the guide groove. The extension direction of the guide groove intersects obliquely with the sliding direction of the guide block 4 and the sliding direction of the tunnel traveler 3. The traveler insert 5 passes through the upper end of the guide groove. The guide block 4 and the tunnel traveler 3 are slidably connected via the dovetail guide rail to prevent them from disengaging.

[0039] The positioning insert 5 is a conical structure with a rounded rectangular cross-section. An inclined hole with a rounded rectangular cross-section is formed on the side of the product through the positioning insert 5.

[0040] The irregularly shaped oblique hole side core-pulling structure also includes a cover plate. The sliding seat 2 has a first groove, and the cover plate is detachably disposed inside the first groove. The transverse sliding groove is disposed in the middle of the bottom of the first groove. After removing the cover plate, the connecting piece 6 connecting the sliding insert 5 and the tunnel sliding position 3 can be removed, and the sliding insert 5 can be replaced.

[0041] The cover plate includes a first plate and a second plate connected sequentially in a direction away from the forming surface 7. The extending direction of the first plate is parallel to the sliding direction of the slide seat 2, and the extending direction of the second plate is parallel to the sliding direction of the tunnel slide 3. The cover plate and the first groove together form a closed cavity for accommodating the tunnel slide 3, which facilitates the replacement of the tunnel slide 3 and the slide insert 5.

[0042] The irregularly shaped oblique hole side core-pulling structure also includes a spring, which is clamped between the transverse slide groove and the tunnel traveler 3. The spring is located on the side of the tunnel traveler 3 near the forming surface 7. The tunnel traveler 3 has a circular groove, and one end of the spring is located inside the circular groove. The spring drives the tunnel traveler 3 to move away from the forming surface 7, so that the tunnel traveler 3 and the guide block 4 are pressed against each other to maintain connection.

[0043] The sliding insert 5 has a connecting structure at one end away from the forming surface 7. The connecting structure is a threaded hole or a hook. On-site personnel can use a hook to hook the hook or screw a screw into the threaded hole to quickly pull the sliding insert 5 out of the through hole 8.

[0044] The irregularly shaped oblique hole side core-pulling structure also includes an oblique ejector rod. The slide seat 2 has an oblique guide hole for the oblique ejector rod to pass through at an angle. The oblique guide hole has a first oblique surface, and the oblique ejector rod has a second oblique surface that mates with the first oblique surface. When the mold is closed, a gap is left between the first oblique surface and the second oblique surface. When the mold is opened, the oblique ejector rod will move vertically. The second oblique surface will first move vertically a certain distance within the oblique guide hole until it contacts the first oblique surface, causing the oblique ejector rod to contact the slide seat 2 and drive the slide seat 2 to move laterally.

[0045] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these should all be considered to be within the scope of this specification.

Claims

1. A non-circular oblique hole side core-pulling structure, comprising: The rear mold core, ejector pin fixing plate, and sliding mechanism are characterized in that: the sliding mechanism includes: A sliding seat is slidably disposed on the rear mold core. The sliding seat has a forming surface and a through hole at both ends. The sliding seat has a tunnel hole and a transverse slide groove inside. The forming surface, tunnel hole, transverse slide groove and through hole are connected in a straight line. The surface of the sliding seat near the ejector pin fixing plate has a vertical slide groove. The end of the vertical slide groove near the through hole is connected to the end of the transverse slide groove near the through hole. The tunnel traveler is slidably disposed inside a transverse groove, and the sliding direction of the traveler seat is inclined to intersect the sliding direction of the tunnel traveler. A guide block, one end of which is set on the ejector pin fixing plate, and the other end of which is slidably set inside the vertical groove. The tunnel travel position is slidably connected to the guide block and engaged with the inclined surface. A traveler insert, which penetrates the tunnel traveler and is detachably connected to the tunnel traveler via a connector.

2. The irregular oblique hole side core-pulling structure according to claim 1, characterized in that: When the mold is opened, the two ends of the sliding insert are respectively located inside the through hole and the tunnel hole; when the mold is closed, one end of the sliding insert penetrates through the forming surface, and the other end of the sliding insert is located inside the transverse groove.

3. The irregular oblique hole side core-pulling structure according to claim 2, characterized in that: The connecting component is a pin or abutment screw.

4. The irregular oblique hole side core-pulling structure according to claim 2, characterized in that: The tunnel traveler has a guide groove at one end, and a dovetail guide rail is provided at the upper end of the guide block. The dovetail guide rail is slidably connected to the guide groove. The extension direction of the guide groove intersects the sliding direction of the guide block at an incline. The extension direction of the guide groove intersects the sliding direction of the tunnel traveler at an incline. The traveler insert passes through the upper end of the guide groove.

5. The irregular oblique hole side core-pulling structure according to claim 2, characterized in that: The row insert is a conical structure with a rounded rectangular cross-section.

6. The irregular oblique hole side core-pulling structure according to claim 1, characterized in that: The irregular oblique hole side core pulling structure also includes a cover plate, the row seat has a first groove, the cover plate is detachably disposed inside the first groove, and the transverse sliding groove is disposed in the middle of the bottom of the first groove.

7. The irregular oblique hole side core-pulling structure according to claim 6, characterized in that: The cover plate includes a first plate and a second plate connected sequentially in a direction away from the forming surface. The extension direction of the first plate is parallel to the sliding direction of the travel seat, and the extension direction of the second plate is parallel to the sliding direction of the tunnel travel seat.

8. The irregular oblique hole side core-pulling structure according to claim 1, characterized in that: The irregular oblique hole side core pulling structure also includes a spring, which is clamped between the transverse slide and the tunnel travel position. The spring is located on the side of the tunnel travel position close to the forming surface. The tunnel travel position has a circular groove, and one end of the spring is located inside the circular groove.

9. The irregular oblique hole side core-pulling structure according to claim 5, characterized in that: The end of the insert away from the molding surface is provided with a connecting structure, which is a threaded hole or a hook.

10. The irregular oblique hole side core-pulling structure according to claim 1, characterized in that: The irregularly shaped inclined hole side core pulling structure also includes an inclined ejector rod. The slide seat has an inclined guide hole for the inclined ejector rod to pass through. The inclined guide hole has a first inclined surface, and the inclined ejector rod has a second inclined surface that cooperates with the first inclined surface. When the mold is closed, a gap is left between the first inclined surface and the second inclined surface.

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