Earphone plastic part injection mold capable of stably pulling core

Abstract

The utility model relates to the field of plastic forming and processing, and discloses an earphone plastic part injection mold capable of stably pulling a core, which comprises a lower mold, a mold disc is detachably arranged on the inner wall of the lower mold, the top end of the lower mold is contacted with an upper mold, and the top end of the upper mold is fixedly connected with a long rod. A round rod penetrates through and is movably connected to the inner wall of the upper mold, a protruding block is fixedly connected to the outer wall of the round rod, a top block is arranged on the inner wall of the lower mold, a moving mechanism is arranged at the bottom end of the round rod, a dismounting assembly is arranged at the top end of the lower mold, and the moving mechanism comprises a trapezoidal block. According to the utility model, the long rod is utilized to extrude the inclined surface of the convex block, so that the convex block drives the round rod and the trapezoidal block to get close to each other, the trapezoidal block can jack up the mold disc, and the earphone model is ejected out through the cooperation of the mold disc and the ejection block, so that the earphone model is prevented from being deformed due to local stress, and the product quality is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic forming processing especially relates to a earphone plastic part injection mold of stable core pulling. BACKGROUND

[0002] The mold is a tool for making shaped articles, which is composed of various parts. Different molds can process raw materials (such as metal, plastic, ceramic, rubber, etc.) into the required shape and size through a specific molding process. The earphone plastic part injection mold is a mold specially used for manufacturing earphone plastic parts. It is a tool designed based on the injection molding process.

[0003] During earphone processing, the staff will heat and melt the plastic raw material, then inject it into the cavity of the mold under a certain pressure through the injection system of the injection molding machine, and finally form the earphone plastic part after cooling and solidification. The formed model is finally ejected from the mold by the ejector pin.

[0004] In the prior art, there are the following defects: in some existing equipment, after the earphone model cools down, the model is ejected by using the ejector pin. For thin-walled earphone plastic parts, if single-point ejection is used, the plastic part may be damaged at the ejection point due to excessive local stress, thereby damaging the product quality. Moreover, when replacing the mold disc, multiple bolt tightening operations are required, which is complicated. Therefore, an earphone plastic part injection mold with stable core pulling is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an earphone plastic part injection mold with stable core pulling, aiming to improve the problem that the ejection method of some equipment in the prior art damages the product.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: an earphone plastic part injection mold with stable core pulling, comprising a lower mold, the inner wall of the lower mold is detachably installed with a mold disc, the top end of the lower mold is in contact with an upper mold, the top end of the upper mold is fixedly connected with a long rod, the inner wall of the upper mold is penetrated and movably connected with a round rod, the outer wall of the round rod is fixedly connected with a protruding block, the inner wall of the lower mold is provided with a top block, the bottom end of the round rod is provided with a moving mechanism, and the top end of the lower mold is provided with a dismounting assembly.

[0007] The moving mechanism comprises a trapezoidal block, the right side wall of the trapezoidal block is elastically connected with the lower mold through a movable spring, and the trapezoidal block is fixedly connected to the bottom end of the round rod.

[0008] As a further description of the above technical scheme:

[0009] The dismounting assembly comprises a clamping block, the right side wall of the clamping block is elastically connected with the lower mold through a moving spring, and the clamping block is slidingly connected on the top end of the lower mold.

[0010] As a further description of the above technical solution:

[0011] The right side wall of the trapezoidal block is fixedly connected with one end of the movable spring, and the other end of the movable spring is fixedly connected with the right end inner wall of the lower mold.

[0012] As a further description of the above technical solution:

[0013] The trapezoidal block is penetratingly and slidingly connected on the inner wall of the lower mold, and the top end of the mold disc is in contact with the bottom end of the upper mold.

[0014] As a further description of the above technical solution:

[0015] The round rod is penetratingly and slidingly connected on the inner wall of the lower mold, and the top end of the long rod is in contact with the bottom end of the convex block.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the mold disc is provided with a rectangular block, the upper portion of the trapezoidal block is provided with an inclined surface, and the lower end outer wall of the mold disc is in contact with the bottom end of the clamping block.

[0018] As a further description of the above technical solution:

[0019] The clamping block is inserted on the bottom end of the upper mold.

[0020] As a further description of the above technical solution:

[0021] The right side wall of the clamping block is fixedly connected with one end of the moving spring, and the other end of the moving spring is fixedly connected with the right end inner wall of the lower mold.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1、In the utility model, the long rod extrudes the inclined surface of the convex block, the convex block brings the round rod and the trapezoidal block close to each other, the trapezoidal block lifts the mold disc, the earphone model is lifted out through the cooperation of the mold disc and the top block, the earphone model is prevented from deforming due to local stress, and the product quality is further improved.

[0024] 2、In the utility model, the clamping block and the moving spring are arranged, the clamping block is moved left and right, the clamping block does not shield the mold disc, the mold disc can be quickly replaced, the cumbersome steps of multiple bolt tightening operations are avoided, and work time is further saved. DRAWINGS

[0025] Figure 1 The upper die and the lower die of the earphone plastic part injection mold with stable core pulling are integrally displayed in the schematic diagram of the utility model;

[0026] Figure 2 The upper die and the lower die of the earphone plastic part injection mold with stable core pulling are exploded and sectioned in the schematic diagram of the utility model;

[0027] Figure 3 The lower die of the earphone plastic part injection mold with stable core pulling is sectioned in the schematic diagram of the utility model;

[0028] Figure 4 The lower die of the earphone plastic part injection mold with stable core pulling is sectioned in the schematic diagram of the utility model;

[0029] Figure 5 The upper die of the earphone plastic part injection mold with stable core pulling is displayed in the schematic diagram of the utility model.

[0030] Legend:

[0031] 1, upper die; 2, lower die; 3, long rod; 4, round rod; 5, convex block; 6, trapezoidal block; 7, movable spring; 8, die disc; 9, top block; 10, clamping block; 11, moving spring. DETAILED DESCRIPTION

[0032] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] Refer to Figures 1-3The utility model provides an embodiment: a earphone plastic piece injection mold of stable core can draw, including lower mould 2, the inner wall detachable installation of lower mould 2 has mould tray 8, the mould tray 8, lower mould 2 and upper mould 1 respectively set up in the arc shaped notch same with each part shape of earphone, the top end of lower mould 2 is contacted with upper mould 1, and the top end of upper mould 1 is connected with electric telescopic handle, and upper mould 1 is provided with injection port, and plastic flows into the mould through injection port, and the top end of upper mould 1 is fixedly connected with long rod 3, and the inner wall of upper mould 1 is penetrated and movably connected with round bar 4, and the upper of upper mould 1 is set up with notch, when upper mould 1 moves upwards, when round bar 4 moves left and right, is not sheltered, the outer wall of round bar 4 is fixedly connected with protruding block 5, and the inner wall of lower mould 2 is provided with top block 9, and the bottom of round bar 4 is provided with moving mechanism, and round bar 4 is provided with two groups, and one group protruding block 5 is set up on the two groups round bar 4 respectively, and the top of lower mould 2 is provided with dismounting subassembly, and moving mechanism includes trapezoidal block 6, and the right side wall of trapezoidal block 6 is elastically connected with lower mould 2 through movable spring 7, and lower mould 2 supports mould tray 8, and trapezoidal block 6 is fixedly connected on the bottom of round bar 4.

[0034] With reference to Figure 1 , Figure 2 and Figure 4 , dismounting subassembly includes clamping block 10, and the right side wall of clamping block 10 is elastically connected with lower mould 2 through movable spring 11, and clamping block 10 is slidingly connected on the top of lower mould 2, and the top of lower mould 2 is set up with the notch corresponding with clamping block 10, so that clamping block 10 can move left and right, and clamping block 10 is inserted on the bottom of upper mould 1, and the bottom of upper mould 1 is set up with notch, and clamping block 10 is inserted in the notch in initial state, and when upper mould 1 and lower mould 2 are closed, the notch shields clamping block 10, and the right side wall of clamping block 10 is fixedly connected with one end of movable spring 11, and the other end of movable spring 11 is fixedly connected with the right end inner wall of lower mould 2, when clamping block 10 moves right, movable spring 11 is compressed, and when resetting, clamping block 10 is reset by the elastic force of movable spring 11.

[0035] With reference to Figure 1 , Figure 3 and Figure 5The right side wall of the trapezoidal block 6 is fixedly connected with one end of the movable spring 7, and the other end of the movable spring 7 is fixedly connected with the inner wall of the right end of the lower mold 2. When the two groups of trapezoidal blocks 6 approach each other, the movable spring 7 is stretched. When the movable spring 7 is reset, the trapezoidal blocks 6 are separated from each other by the elastic force of the movable spring 7. The trapezoidal blocks 6 are connected through and slide on the inner wall of the lower mold 2. The lower mold 2 is provided with a notch corresponding to the trapezoidal block 6, so that the trapezoidal block 6 can move left and right. The top end of the mold disc 8 is in contact with the bottom end of the upper mold 1. The round rod 4 is connected through and slides on the inner wall of the lower mold 2. The lower mold 2 is provided with a notch corresponding to the round rod 4, so that the round rod 4 can move left and right. The top end of the long rod 3 is in contact with the bottom end of the protruding block 5. The bottom end of the protruding block 5 is provided with an inclined surface. When the long rod 3 contacts and presses the inclined surface, the two groups of protruding blocks 5 approach each other. The outer wall of the mold disc 8 is provided with a rectangular block. The upper part of the trapezoidal block 6 is provided with an inclined surface. When the inclined surface of the trapezoidal block 6 contacts and presses the mold disc 8, the mold disc 8 moves upward. The lower end of the outer wall of the mold disc 8 is in contact with the bottom end of the clamping block 10.

[0036] Working principle: When the earphone is processed, the plastic particles flow into the mold through the injection port in the upper mold 1. After the plastic cools down, when the earphone needs to be demolded, the staff can control the electric telescopic rod from the outside to make the electric telescopic rod move upward with the upper mold 1 and the long rod 3. When the long rod 3 contacts and presses the protruding block 5, the two groups of protruding blocks 5 approach each other with the two groups of round rods 4. The two groups of round rods 4 will make the two groups of trapezoidal blocks 6 approach each other. The trapezoidal blocks 6 will press the movable spring 7. When the inclined surface of the trapezoidal block 6 contacts and presses the mold disc 8, the mold disc 8 moves upward. At the same time, the external power supply connected with the top block 9 is turned on. The top block 9 and the mold disc 8 cooperate to eject the earphone model. When the staff takes out the earphone model with his hand, the electric telescopic rod moves downward with the long rod 3 and the upper mold 1. When the long rod 3 is no longer in contact with the protruding block 5, the two groups of trapezoidal blocks 6 are separated from each other by the elastic force of the movable spring 7. The trapezoidal blocks 6 will move to the initial position with the round rods 4 and the protruding blocks 5. At this time, the top block 9 moves downward to the initial position. If demolding operation needs to be performed again, the above operation steps can be repeated.

[0037] When the mold disc 8 needs to be disassembled, the hand moves the clamping block 10 to the right. The clamping block 10 will press the moving spring 11. When the clamping block 10 does not block the mold disc 8, the hand takes out the mold disc 8 upward. At this time, the hand releases the clamping block 10. The clamping block 10 is reset by the elastic force of the moving spring 11. When the mold disc 8 needs to be installed, the hand moves the clamping block 10 to the right. When the clamping block 10 does not block the notch, the hand aligns and inserts the mold disc 8 into the notch, so that the clamping block 10 blocks the mold disc 8. If the mold disc 8 needs to be installed and disassembled again, the above operation steps can be repeated.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A plastic injection mold for a stable core-drawing earphone plastic part, comprising a lower mold (2), characterized in that: The inner wall of the lower mold (2) is detachably provided with a mold disc (8), the top end of the lower mold (2) is in contact with an upper mold (1), the top end of the upper mold (1) is fixedly connected with an elongated rod (3), the inner wall of the upper mold (1) is penetrated and movably connected with a round rod (4), the outer wall of the round rod (4) is fixedly connected with a convex block (5), the inner wall of the lower mold (2) is provided with a top block (9), the bottom end of the round rod (4) is provided with a moving mechanism, and the top end of the lower mold (2) is provided with a dismounting assembly. The moving mechanism comprises a trapezoidal block (6), the right side wall of the trapezoidal block (6) is elastically connected with the lower mold (2) through an elastic spring (7), and the trapezoidal block (6) is fixedly connected to the bottom end of the round rod (4).

2. The injection mold for a stable core of earphone plastic parts according to claim 1, wherein: The dismounting assembly comprises a clamping block (10), the right side wall of the clamping block (10) is elastically connected with the lower mold (2) through a moving spring (11), and the clamping block (10) is slidingly connected to the top end of the lower mold (2).

3. The injection mold for a stable core of earphone plastic parts according to claim 1, wherein: The right side wall of the trapezoidal block (6) is fixedly connected with one end of the elastic spring (7), and the other end of the elastic spring (7) is fixedly connected with the right end inner wall of the lower mold (2).

4. The injection mold for a stable core of earphone plastic parts according to claim 1, wherein: The trapezoidal block (6) penetrates and is slidingly connected to the inner wall of the lower mold (2), and the top end of the mold disc (8) is in contact with the bottom end of the upper mold (1).

5. The injection mold for a stable core of earphone plastic parts according to claim 1, wherein: The round rod (4) penetrates and is slidingly connected to the inner wall of the lower mold (2), and the top end of the elongated rod (3) is in contact with the bottom end of the convex block (5).

6. The injection mold for a stable core-drawing earphone plastic part of claim 1, wherein: The outer wall of the mold disc (8) is provided with a rectangular block, the upper portion of the trapezoidal block (6) is provided with an inclined surface, and the lower end outer wall of the mold disc (8) is in contact with the bottom end of the clamping block (10).

7. The injection mold for a stable core-drawing earphone plastic part of claim 2, wherein: The clamping block (10) is inserted into the bottom end of the upper mold (1).

8. The injection mold for a stable core-drawing earphone plastic part of claim 2, wherein: The right side wall of the clamping block (10) is fixedly connected with one end of the moving spring (11), and the other end of the moving spring (11) is fixedly connected with the right end inner wall of the lower mold (2).

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