CN210026137U

CN210026137U - Inclined guide post delay flip slider mechanism

Info

Publication number: CN210026137U
Application number: CN201920747116.XU
Authority: CN
Inventors: 魏治中
Original assignee: Chengdu Fengyixin Plastic Mould Technology Co Ltd
Current assignee: Chengdu Fengyixin Plastic Mould Technology Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-02-07
Anticipated expiration: 2029-05-23

Abstract

The utility model provides an inclined guide post delay flip slider mechanism, which relates to the technical field of injection molds and comprises a slider body inserted between a front mold and a rear mold from the side surface of the mold, wherein a movable needle is arranged on the slider body in a sliding way along the demolding direction, a flange is arranged on the movable needle, and a spring is arranged between the flange and the slider body; a movable needle pressing plate for limiting the axial sliding distance of the movable needle is detachably connected to the slider body, the top end of the movable needle penetrates through the movable needle pressing plate and abuts against the bottom surface of the front mold, and the bottom end of the movable needle is introduced into a cavity of the rear mold; the slider body is further provided with an inclined guide post hole for the inclined guide post fixedly connected to the front die to pass through, and a delay gap is formed in the inclined guide post hole. The problems of complex structure and poor coordination of a sliding block delay mechanism in the prior art are solved.

Description

Inclined guide post delay flip slider mechanism

Technical Field

The utility model relates to an injection mold technical field especially relates to an oblique guide pillar postpones to flip slider mechanism.

Background

The injection mold can be used for molding plastic parts with complex structure, precise size and good internal quality at one time, and is widely applied to the production of plastic products. The slider is one of the parts commonly used in injection mold, provides the guarantee for injection molding product's quality and convenience. The slide block is an important part in the inclined guide post core pulling mechanism, a core or a forming insert is arranged on the slide block, and side core pulling or side parting is realized under the driving of the inclined guide post.

The slider under the normal condition is that it just can to do an oblique guide post hole directly, can be sometime, needs the slider earlier motionless, must pass a array just when moving, and we just need add on the mould and carry out the mechanism that delays to the slider, and common time delay has several kinds of circumstances as follows: 1. one set of die is provided with a plurality of slide blocks, and die sinking must be carried out between the slide blocks in sequence, otherwise, the die is collided; 2. when the sliding blocks move upwards, one sliding block needs to move ahead, and the other sliding block needs to move backwards; 3. a runner is arranged on the top surface of the sliding block, but a water gap crochet needle cannot be arranged below the main runner, and when a back-off water gap needs to be arranged on the sliding block; 4. the slider is provided with a spring block and other structures which need to move back first and then move back.

The slider time delay mechanism in the existing injection mold is complex in structure and poor in internal coordination, and the forming quality and the service life of the injection mold are reduced.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem among the prior art, the utility model provides a slider mechanism is dragged to oblique guide pillar delay has solved the problem that slider delay mechanism structure is complicated among the prior art, the harmony is poor.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

the inclined guide post delay flip slider mechanism comprises a slider body inserted between a front die and a rear die from the side surface of the die, wherein a movable needle is arranged on the slider body in a sliding mode along the demolding direction, a flange is arranged on the movable needle, and a spring is arranged between the flange and the slider body; a movable needle pressing plate for limiting the axial sliding distance of the movable needle is detachably connected to the slider body, the top end of the movable needle penetrates through the movable needle pressing plate and abuts against the bottom surface of the front mold, and the bottom end of the movable needle is introduced into a cavity of the rear mold; the slider body is further provided with an inclined guide post hole for the inclined guide post fixedly connected to the front die to pass through, and a delay gap is formed in the inclined guide post hole.

Furthermore, a movable cavity with the inner diameter larger than the outer diameter of the flange is arranged between the slider body and the movable needle pressing plate, the flange is positioned in the movable cavity, and the spring is arranged between the flange and the bottom surface of the movable cavity. The bottom surface of the movable cavity is used for supporting the spring, the top surface of the movable cavity is used for limiting the axis of the movable needle, and the side surface of the movable cavity is used for limiting the radial displacement of the movable needle.

Furthermore, the movable cavity comprises a spring hole arranged on the slider body and a flange hole arranged on the movable needle pressing plate, the flange hole and the spring hole are coaxially arranged, and the inner diameter of the flange hole is larger than that of the spring hole. The internal diameter in flange hole is greater than the internal diameter in spring hole, guarantees flange hole and the coaxial installation degree of difficulty in spring hole when can reduce activity needle clamp plate and slider body installation.

Furthermore, the top surface of the flange hole and the bottom surface of the spring hole are coaxially provided with through holes which are in clearance fit with the movable needle. The top surface and the bottom surface of the movable cavity are provided with through holes, the through holes are used for the movable needle to pass through, one end of the movable needle is abutted against the front mold, and the other end of the movable needle is led into the rear mold cavity.

Furthermore, the movable needle pressing plate is connected with the sliding block body through a screw, and the top surface of the screw is lower than that of the movable needle pressing plate. The screw is sunk into the movable needle pressing plate, and the top surface of the screw is prevented from influencing the contact of the bottom surface of the front die and the top end of the movable needle.

Furthermore, a delay gap is formed between the inner wall of the inclined guide post hole and the outer wall of the inclined guide post, and the delay gap corresponds to the deformation length of the spring. The action that the sliding block body moves along with the front die is delayed through the delay gap, the movable needle is prevented from scratching a product in a cavity of the rear die, and the forming quality of the product is guaranteed.

The utility model has the advantages that: set up movable needle on the slider body, in making the bottom of activity needle let in the back mould die cavity, after the product shaping, the bottom of activity needle also is absorbed in the product in, can't directly take out the slider body from the side of mould before front mould and back mould are thrown off, prevents that the maloperation from leading to influencing the shaping quality of product and the life of mould.

The top surface of the movable needle is abutted against the front die, the movable needle is pressed by the front die, the movable needle compresses the spring, the spring is deformed to accumulate elastic force, when the front die and the rear die are demolded, the front die leaves the rear die, the movable needle loses the extrusion of the front die, under the action of the elastic force of the spring, the movable needle moves upwards to enable the bottom end of the movable needle to be separated from a cavity of the rear die, and the demolding action of the slider body is delayed by a delay gap in the process that the bottom end of the movable needle is separated from the cavity of the rear die, so that the demolding sequence of the die is ensured; the whole mechanism has simple structure, easy processing and convenient assembly and disassembly;

the front mould just leads to the activity needle to move up after breaking away from the back mould, the activity needle shifts up and just makes activity needle bottom deviate from the back mould die cavity, the activity needle just makes the slider body can deviate from the mould to the effect downside of guide pillar to one side after deviating from the back mould die cavity, whole in-process, rely on mutual restriction and effect between the spare part, next action must be can go on after last action is accomplished, make the inside harmony of whole mechanism good, the time difference between slider drawing of patterns and the mould drawing of patterns has been guaranteed, make fashioned product quality better, the life of mould has also been improved.

Drawings

Fig. 1 is a schematic sectional structure view of an inclined guide post delayed flip slider mechanism along the axial direction of a movable needle.

Fig. 2 is an enlarged view of a point a in fig. 1.

Wherein, 1, a slide block body; 11. an oblique guide post hole; 12. a delay gap; 13. a movable cavity; 131. a spring hole; 132. a flange aperture; 2. a movable needle; 21. a flange; 3. a spring; 4. a movable needle pressing plate; 6. a front mold; 7. a rear mold; 71. a rear mold cavity; 8. and (6) an inclined guide post.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in fig. 1 and 2, the inclined guide post delayed flip slider mechanism comprises a slider body 1 inserted between a front mold and a rear mold from the side surface of the mold, a movable needle 2 is arranged on the slider body 1 in a sliding manner along the demolding direction, a movable needle pressing plate 4 limiting the axial sliding distance of the movable needle 2 is detachably connected to the slider body 1, the top end of the movable needle 2 penetrates through the movable needle pressing plate 4 and abuts against the bottom surface of the front mold, the bottom end of the movable needle 2 penetrates through the slider body 1 and enters a cavity of the rear mold, and after a product is molded, the bottom end of the movable needle 2 is sunk into the product.

The cylinder of the movable needle 2 is a cylinder, and a flange 21 extending outwards in the radial direction is arranged on the outer cylindrical surface of the upper part of the cylinder, namely the flange 21 is a disc fixed on the outer cylindrical surface of the upper part of the cylinder of the movable needle 2, and the outer diameter of the flange 21 is larger than that of the spring 3. The spring 3 is sleeved on the cylinder of the movable needle 2 below the flange 21, one end of the spring 3 is abutted on the bottom surface of the flange 21, and the other end is abutted on the bottom surface of the movable cavity 13.

The movable cavity 13 is a cylindrical cavity disposed between the slider body 1 and the movable needle pressing plate 4, the movable cavity 13 includes a spring hole 131 disposed on the slider body 1 and a flange hole 132 disposed on the movable needle pressing plate 4, the flange hole 132 is disposed coaxially with the spring hole 131, and an inner diameter of the flange hole 132 is greater than an inner diameter of the spring hole 131.

The top surface of the flange hole 132 and the bottom surface of the spring hole 131 are coaxially provided with through holes which are in clearance fit with the movable needle 2, so that the movable needle 2 can pass through and slide in the through holes. The movable needle pressing plate 4 is connected with the sliding block body 1 through a screw, and the top surface of the screw is lower than that of the movable needle pressing plate 4.

The slider body 1 is further provided with an inclined guide pillar hole 11 for the inclined guide pillar 8 fixedly connected to the front mold to pass through, and a delay gap 12 is arranged in the inclined guide pillar hole 11. The inner diameter of the inclined guide post hole 11 is larger than the outer diameter of the inclined guide post 8, and after the inclined guide post 8 is inserted into the inclined guide post hole 11, a gap between the inner wall of the inclined guide post hole 11 and the outer wall of the inclined guide post 8 is a delay gap 12.

After the injection mold is closed, the movable needle 2 in the mechanism is pressed by the front mold 6, so that the movable needle 2 integrally moves downwards, the position of the slider body 1 is unchanged, the position of a spring hole 131 arranged on the slider body 1 is also unchanged, a spring 3 supported by the spring hole 131 is extruded by a flange 21 to deform to generate elastic force, and the spring 3 is kept in an extruded state under the condition that the front mold 6 is not moved; in the process of injecting the molten plastic into the rear mold cavity 71 of the injection mold, the bottom end of the movable needle 2 is introduced into the rear mold cavity 71, the molten plastic wraps the bottom end of the movable needle 2, after the product is cooled and molded, the bottom end of the movable needle 2 is sunk into the product, and due to the blocking effect of the product, if the front mold 6 and the rear mold 7 are not separated firstly, the slider body 1 cannot be pulled out from the side.

The front die is pulled to be separated from the rear die through the injection molding machine, the movable needle 2 loses extrusion, the spring 3 recovers the deformation process, the movable needle 2 is pushed to move upwards, the bottom end of the movable needle 2 is separated from a product, the movable needle 2 loses the blocking effect of the product on the movable needle, and the slider body 1 can be pulled out from the side face. And because the slider body 1 does not need to be additionally provided with power to be drawn out, the power for moving the slider body 1 comes from the vertical movement of the front mold 6, in the vertical movement process of the front mold 6, the slider body 1 is pushed to move by the inclined guide post 8 fixedly connected with the front mold 6, but when the movable needle 2 is not completely separated from a product, the inclined guide post 8 cannot push the slider body 1 to move, so the delay gap 12 is provided for the movable needle 2 to be separated from the product, the inclined guide post 8 moves on the distance of the product, and until the movable needle 2 is separated from the product, the inclined guide post 8 is contacted with the right side surface of the inclined guide post hole 11 (the direction shown in figure 1) to push the slider body 1 to be separated from the side surface of the injection mold.

Claims

1. The inclined guide post delayed flip slider mechanism is characterized by comprising a slider body (1) inserted between a front die and a rear die from the side surface of the die, wherein a movable needle (2) is arranged on the slider body (1) in a sliding manner along the demolding direction, a flange (21) is arranged on the movable needle (2), and a spring (3) is arranged between the flange (21) and the slider body (1);

a movable needle pressing plate (4) for limiting the axial sliding distance of the movable needle (2) is detachably connected to the slider body (1), the top end of the movable needle (2) penetrates through the movable needle pressing plate (4) and abuts against the bottom surface of the front mold, and the bottom end of the movable needle (2) is communicated with a cavity of the rear mold;

the slider body (1) is further provided with an inclined guide post hole (11) for an inclined guide post (8) fixedly connected to the front die to pass through, and a delay gap (12) is arranged in the inclined guide post hole (11).

2. The inclined guide post delayed flip slider mechanism according to claim 1, wherein a movable cavity (13) with an inner diameter larger than an outer diameter of the flange (21) is arranged between the slider body (1) and the movable needle pressing plate (4), the flange (21) is positioned in the movable cavity (13), and the spring (3) is arranged between the flange (21) and the bottom surface of the movable cavity (13).

3. The angle guide post delayed flip slider mechanism according to claim 2, wherein the movable cavity (13) comprises a spring hole (131) provided on the slider body (1) and a flange hole (132) provided on the movable needle pressing plate (4), the flange hole (132) is provided coaxially with the spring hole (131), and an inner diameter of the flange hole (132) is larger than that of the spring hole (131).

4. The angle beam delayed flip slider mechanism of claim 3, wherein the top surface of the flange hole (132) and the bottom surface of the spring hole (131) are coaxially provided with through holes which are clearance-fitted with the movable pin (2).

5. The angle beam delayed flip slider mechanism of claim 1, characterized in that the movable pin press plate (4) is connected to the slider body (1) by a screw, the top surface of which is lower than the top surface of the movable pin press plate (4).

6. The angled guide post delayed flip slider mechanism according to claim 1, characterized in that a delay gap (12) is formed between the inner wall of the angled guide post hole (11) and the outer wall of the angled guide post (8), the delay gap (12) corresponding to the deformation length of the spring (3).