Injection mold with good stability

Abstract

The application discloses an injection mold with good stability, which comprises a box, an upper mold and a lower mold, first sliding grooves are symmetrically arranged in the inner bottom wall of the box, a sliding rod is fixedly connected to the side wall of each first sliding groove, a first sliding block is slidingly connected to the side wall of each sliding rod, a fixing seat is fixedly connected to the top wall of each first sliding block, a bidirectional screw rod is rotationally connected to the inner side wall of the box, screw blocks are symmetrically and threadedly connected to the side wall of the bidirectional screw rod, a connecting rod is rotationally connected to the side wall of each screw block, and a pressing plate is rotationally connected to the other ends of the two connecting rods. In the application, the position of the lower mold is fixed by setting the abutting block, the first sliding groove, the sliding rod, the first sliding block, the fixing seat, the clamping plate and the first spring, the adhered lower mold and upper mold are separated by setting the limiting groove, the limiting rod, the mounting block, the guide block, the guide rod, the pressing block, the first wedge block, the second wedge block and the second sliding block, and then the mold is demolded.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of injection molding equipment, in particular to an injection mold with good stability. BACKGROUND

[0002] The injection molding machine, also known as an injection molding machine or an injection machine, is main molding equipment for making various plastic products by using thermoplastic or thermosetting plastic through a plastic molding die, and is a tool for giving the products complete configuration and accurate size.

[0003] The injection mold is usually extruded and formed by an injection machine during injection molding, however, the existing injection mold still has some deficiencies during use, for example, a certain downward pressure is generated during extrusion of the mold by the injection machine, which easily leads to position deviation of the mold, affects the precision of injection molding, and further leads to poor stability of product molding; the upper mold and the lower mold are easily bonded under the pressure of the injection machine, and subsequent demolding operation is inconvenient. SUMMARY

[0004] The application aims at solving the problems in the prior art and provides an injection mold with good stability.

[0005] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0006] The injection mold with good stability comprises a box body, an upper mold and a lower mold, first sliding grooves are symmetrically formed in the inner bottom wall of the box body, a sliding rod is fixedly connected to each side wall of each first sliding groove, a first sliding block is slidingly connected to each side wall of each sliding rod, a fixed seat is fixedly connected to the top wall of each first sliding block, each fixed seat is a wedge-shaped structure, a bidirectional screw rod is rotatably connected to the inner side wall of the box body, screw blocks are symmetrically and threadedly connected to the side walls of the bidirectional screw rod, a connecting rod is rotatably connected to each side wall of each screw block, a pressing plate is rotatably connected to the other ends of the two connecting rods, symmetrically fixed blocks are fixedly connected to the side walls of the pressing plate, and each fixed block is a wedge-shaped structure.

[0007] Preferably, each screw block is in abutment sliding with the side wall of the inner side wall of the box body, a motor is fixedly connected to the side wall of the box body, the output shaft of the motor is fixedly connected to one end of the bidirectional screw rod after penetrating through the side wall of the box body, a recess is formed in the side wall of each fixed seat, a plurality of first springs are fixedly connected to the side wall of each recess, and the other ends of the plurality of first springs in the same recess are fixedly connected to a clamping plate.

[0008] Preferably, the motor is a forward and reverse motor, the lower mold is placed on the inner bottom wall of the box body, the bottom wall of the upper mold and the top wall of the lower mold are jointly provided with an injection cavity, and the top wall of the upper mold is provided with an inlet communicated with the injection cavity.

[0009] Preferably, the lower mold top wall is symmetrically provided with a limiting slot, the upper mold bottom wall is symmetrically fixedly connected with a limiting rod corresponding to the position of the limiting slot, each side wall of the limiting slot is provided with a strip-shaped hole, each side wall of the strip-shaped hole is slidably connected with a reset rod, and one end side wall of each reset rod located in the limiting slot is fixedly connected with a top block.

[0010] Preferably, the lower mold side wall is symmetrically fixedly connected with a mounting block, each mounting block is a semi-circular pipe structure with one end closed, the inner bottom wall of each mounting block is fixedly connected with a guide block, each guide block is a semi-circular pipe structure with both ends closed, each guide block side wall is symmetrically slidably connected with a first wedge-shaped block, the inclined surfaces of the two first wedge-shaped blocks are oppositely arranged, the side walls of the two first wedge-shaped blocks are commonly fixedly connected with a guide rod, and the guide rod is obliquely arranged.

[0011] Preferably, the inner side wall of each mounting block is slidably connected with a pressing block, each pressing block is a semi-circular pipe structure with one end closed, the inner side wall of each pressing block is symmetrically fixedly connected with a second wedge-shaped block corresponding to the first wedge-shaped block, and the side walls of the first wedge-shaped block and the second wedge-shaped block on the same side are abuttingly slid.

[0012] Preferably, the inner top wall of each pressing block is fixedly connected with a second spring, and the other end of each second spring is fixedly connected with the top wall of the corresponding guide block.

[0013] Preferably, the inner side wall of each guide block is provided with a second sliding groove, each second sliding groove is slidably connected with a second sliding block in the inside, each guide rod is slidably connected with the side wall of the corresponding second sliding block, and the side wall of each second sliding block is fixedly connected with one end of the reset rod on the same side.

[0014] The present application has the following beneficial effects:

[0015] 1. By setting the bidirectional screw rod, threaded block, connecting rod and pressing plate components, when the motor drives the bidirectional screw rod to rotate, the threaded blocks can be brought close to each other, so as to drive the pressing plate to press down through the connecting rod, thereby pressing the upper mold and the lower mold tightly, facilitating injection molding;

[0016] 2. By setting the resisting block, first sliding groove, sliding rod, first sliding block, fixed seat, clamping plate and first spring component, when the pressing plate is pressed down, the two resisting blocks can be simultaneously lowered, the fixed seat 7 side wall of the wedge-shaped structure is extruded to slide in the direction of approaching the lower mold along the sliding rod, so as to fix the position of the lower mold through the clamping plate, avoid the deviation of the lower mold under the pressing force of the pressing plate, affect the precision of injection molding, and make the mold injection more stable;

[0017] 3、Through setting the limiting groove, the limiting rod, the mounting block, the guide block, the guide rod, the pressing block, the first wedge-shaped block, the second wedge-shaped block and the second sliding block component, the upper mold and the lower mold can be clamped and fixed through the limiting groove and the limiting rod, the relative sliding during injection molding is avoided, the stability of the mold is further improved, after the injection molding is completed, the second wedge-shaped block is driven to extrude the first wedge-shaped block through the pressing block, the guide rod is moved to one side through the two first wedge-shaped blocks, the guide block is extruded through the guide rod, the guide block and the pressing block are reversely moved, then the limiting rod can be lifted through the reset rod driven by the top block, so that the adhered lower mold and the upper mold can be separated after the injection molding is completed, and the demolding is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall structure schematic diagram of the injection mold with good stability is provided for the present application.

[0019] Figure 2 The structure schematic diagram of the upper mold and the lower mold part in the injection mold with good stability is provided for the present application.

[0020] Figure 3 The enlarged schematic diagram of the A part structure in the injection mold with good stability is provided for the present application.

[0021] Figure 4 The structure schematic diagram of the mounting block and the guide block part in the injection mold with good stability is provided for the present application.

[0022] Figure 5 The cross-sectional structure schematic diagram of the fixed seat part in the injection mold with good stability is provided for the present application.

[0023] In the figure: 1 box body, 2 upper mold, 3 lower mold, 4 mounting block, 5 sliding rod, 6 first sliding block, 7 fixed seat, 8 clamping plate, 9 bidirectional screw, 10 threaded block, 11 connecting rod, 12 injection cavity, 13 feeding port, 14 pressing plate, 15 resisting block, 16 motor, 17 pressing block, 18 limiting rod, 19 limiting groove, 20 strip-shaped hole, 21 reset rod, 22 top block, 23 second spring, 24 second wedge-shaped block, 25 first wedge-shaped block, 26 guide block, 27 guide rod, 28 second sliding groove, 29 second sliding block, 30 groove, 31 first spring, 32 first sliding groove. DETAILED DESCRIPTION

[0024] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the concept of the present application, so the present application is not limited to the specific implementations disclosed below.

[0025] With reference to Figures 1-5 The injection mold with good stability comprises a box body 1, an upper mold 2 and a lower mold 3, first sliding grooves 32 are symmetrically formed in the inner bottom wall of the box body 1, a sliding rod 5 is fixedly connected to the side wall of each first sliding groove 32, a first sliding block 6 is slidingly connected to the side wall of each sliding rod 5, a fixed seat 7 is fixedly connected to the top wall of each first sliding block 6, each fixed seat 7 is wedge-shaped, a bidirectional screw rod 9 is rotatably connected to the inner side wall of the box body 1, a threaded block 10 is symmetrically and threadedly connected to the side wall of the bidirectional screw rod 9, a connecting rod 11 is rotatably connected to the side wall of each threaded block 10, a pressing plate 14 is rotatably connected to the other ends of the two connecting rods 11, a resisting block 15 is symmetrically and fixedly connected to the side wall of the pressing plate 14, and one end of each resisting block 15 is wedge-shaped.

[0026] Each threaded block 10 slides with the side wall of the inner side wall of the box body 1, a motor 16 is fixedly connected to the side wall of the box body 1, the output shaft of the motor 16 is fixedly connected to one end of the bidirectional screw rod 9 after penetrating through the side wall of the box body 1, a recess 30 is formed in the side wall of each fixed seat 7, a plurality of first springs 31 are fixedly connected to the side wall of each recess 30, the other ends of the plurality of first springs 31 located in the same recess 30 are fixedly connected to a clamping plate 8, the fixed seat 7 can drive the clamping plate 8 to fix the position of the lower mold 3, so as to avoid the deviation of the lower mold 3 under the pressing force of the pressing plate 14 and affect the precision of injection molding, so that the mold is more stable during use, and the extrusion force of the resisting block 15 can be buffered by the first spring 31, so as to avoid damage to the lower mold 3 when the clamping plate 8 is clamped and fixed.

[0027] The motor 16 is a reversible motor, which is prior art and will not be described here, the lower mold 3 is placed on the inner bottom wall of the box body 1, the bottom wall of the upper mold 2 and the top wall of the lower mold 3 are jointly provided with an injection cavity 12, and the top wall of the upper mold 2 is provided with an inlet 13 communicating with the injection cavity 12.

[0028] The lower mold 3 is symmetrically provided with a limiting groove 19 on the top wall, and the upper mold 2 is symmetrically and fixedly connected with a limiting rod 18 at the position corresponding to the limiting groove 19 on the bottom wall. A strip-shaped hole 20 is formed on the side wall of each limiting groove 19. Each strip-shaped hole 20 is slidably connected with a reset rod 21. One end of each reset rod 21 is fixedly connected with a top block 22. The upper mold 2 and the lower mold 3 are positioned by the limiting groove 19 and the limiting rod 18, so that the upper mold 2 and the lower mold 3 are prevented from relatively sliding during injection molding, and the stability of the mold is improved.

[0029] The lower mold 3 is symmetrically fixedly connected with a mounting block 4. Each mounting block 4 is a half-circular pipe-shaped structure with one end closed. Each mounting block 4 is fixedly connected with a guide block 26 on the inner bottom wall. Each guide block 26 is a half-circular pipe-shaped structure with both ends closed. Each guide block 26 is symmetrically and slidably connected with a first wedge-shaped block 25 on the side wall. The two first wedge-shaped blocks 25 are oppositely arranged. The two first wedge-shaped blocks 25 are fixedly connected with a guide rod 27 on the side wall. The guide rod 27 is obliquely arranged. The second wedge-shaped block 24 can press the first wedge-shaped block 25 to drive the obliquely arranged guide rod 27 to move to one side.

[0030] Each mounting block 4 is slidably connected with a pressing block 17 on the inner side wall. Each pressing block 17 is a half-circular pipe-shaped structure with one end closed. Each pressing block 17 is fixedly connected with a second wedge-shaped block 24 on the inner side wall corresponding to the first wedge-shaped block 25. The first wedge-shaped block 25 and the second wedge-shaped block 24 on the same side are in abutting sliding. The second wedge-shaped block 24 is pressed to press the first wedge-shaped block 25 by pressing the pressing block 17 downward. Then the second sliding block 29 is pressed by the guide rod 27 to move in the opposite direction of the pressing block 17.

[0031] Each pressing block 17 is fixedly connected with a second spring 23 on the inner top wall. The other end of each second spring 23 is fixedly connected with the top wall of the corresponding guide block 26. When the pressing block 17 is pressed downward, the second spring 23 is compressed under force. After the upper mold 2 and the lower mold 3 are separated and the downward pressure is removed, the second spring 23 releases the elastic force to drive the pressing block 17 to move upward and reset.

[0032] Each guide block 26 is provided with a second sliding groove 28 on the inner side wall. Each second sliding groove 28 is slidably connected with a second sliding block 29 inside. Each guide rod 27 is slidably connected with the side wall of the corresponding second sliding block 29. Each second sliding block 29 is fixedly connected with one end of the reset rod 21 on the side wall. When the second sliding block 29 moves in the opposite direction of the pressing block 17, the limiting rod 18 can be lifted from the limiting groove 19 by the reset rod 21 driving the top block 22. Thus, the adhered lower mold 3 and upper mold 2 can be separated after the injection molding is completed, which is convenient for subsequent demolding operation.

[0033] In the application, first, the upper mold 2 and the lower mold 3 are installed and positioned through the limiting groove 19 and the limiting rod 18, so that the upper mold 2 and the lower mold 3 do not slide relative to each other during injection molding, and the stability of the mold is improved. Then, the upper mold 2 and the lower mold 3 are placed on the inner side wall of the box 1, and the output end of the external injection device is communicated with the feeding port 13, so that the injection material can enter the inside of the injection cavity 12 through the feeding port 13. The positive rotation of the motor 16 can drive the bidirectional screw rod 9 to rotate synchronously, so that the two threaded blocks 10 symmetrically connected by the side wall of the threaded block 10 are close to each other, and the connecting rod 11 connected with the side wall of the threaded block 10 drives the pressing plate 14 to press down, so that the upper mold 2 and the lower mold 3 are pressed tightly, which is convenient for injection molding.

[0034] When the pressing plate 14 is pressed down, the two abutting blocks 15 fixedly connected with the side wall of the pressing plate 14 can be lowered at the same time. When the pressing plate 14 is pressed down, the abutting blocks 15 first abut and slide with the side wall of the fixed seat 7. Since one end of the abutting block 15 and the fixed seat 7 are both wedge-shaped structures, the abutting block 15 can extrude the fixed seat 7 to drive the first sliding block 6 to move along the slide rod 5 towards the lower mold 3. The slide rod 5 and the first sliding block 6 are used to limit the sliding of the fixed seat 7, so that it is more stable. The fixed seat 7 can drive the clamping plate 8 to fix the position of the lower mold 3, so that it does not deviate under the pressure of the pressing plate 14, which affects the precision of injection molding, so that the mold is more stable during use. At the same time, the extrusion force of the abutting block 15 can be buffered by the first spring 31, so as to avoid damage to the lower mold 3 when the clamping plate 8 is clamped and fixed.

[0035] After injection molding, the upper mold 2 and the lower mold 3 are prone to adhesion under the action of pressure, which is not convenient for subsequent demolding operation. At this time, the second wedge block 24 is extruded by the first wedge block 25 through the downward pressing of the pressing block 17, so that the two first wedge blocks 25 drive the inclined guide rod 27 to move to one side, the second sliding block 29 is extruded by the guide rod 27 to make the second sliding block 29 and the pressing block 17 move in opposite directions, and then the limiting rod 18 can be lifted from the limiting groove 19 by the top block 22 driven by the reset rod 21, so that the adhered lower mold 3 and the upper mold 2 can be separated after injection molding, which is convenient for subsequent demolding operation. When the pressing block 17 is pressed down, the second spring 23 is compressed under stress. After the upper mold 2 and the lower mold 3 are separated and the downward pressure is removed, the second spring 23 releases the elastic force to drive the pressing block 17 to move upward and reset. In this process, the second wedge block 24 and the first wedge block 25 abut and slide, the two first wedge blocks 25 drive the guide rod 27 and the guide block 26 to reset, and the top block 22 is driven by the reset rod 21 to return to the bottom of the limiting groove 19.

[0036] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A good stability injection mold comprising a mold box (1), an upper mold (2) and a lower mold (3), characterized in that, The inner bottom wall of the box (1) is symmetrically provided with a first sliding groove (32), the side wall of each first sliding groove (32) is fixedly connected with a sliding rod (5), the side wall of each sliding rod (5) is slidably connected with a first sliding block (6), the top wall of each first sliding block (6) is fixedly connected with a fixing seat (7), each fixing seat (7) is a wedge-shaped structure, a double-threaded screw rod (9) is rotatably connected to the inner side wall of the box (1), the side wall of the double-threaded screw rod (9) is symmetrically and threadedly connected with a threaded block (10), the side wall of each threaded block (10) is rotatably connected with a connecting rod (11), two connecting rods (11) are rotatably connected with a pressing plate (14) at the other ends, the side wall of the pressing plate (14) is symmetrically and fixedly connected with a resisting block (15), one end of each resisting block (15) is a wedge-shaped structure; The top wall of the lower mold (3) is symmetrically provided with a limiting groove (19), the bottom wall of the upper mold (2) is symmetrically and fixedly connected with a limiting rod (18) at the positions corresponding to the limiting grooves (19), the side wall of each limiting groove (19) is provided with a strip-shaped hole (20), the side wall of each strip-shaped hole (20) is slidably connected with a reset rod (21), and the side wall of one end of each reset rod (21) inside the limiting groove (19) is fixedly connected with a top block (22); The side wall of the lower mold (3) is symmetrically and fixedly connected with a mounting block (4), each mounting block (4) is a half-circular pipe-shaped structure with one end closed, the inner bottom wall of each mounting block (4) is fixedly connected with a guide block (26), each guide block (26) is a half-circular pipe-shaped structure with both ends closed, the side wall of each guide block (26) is symmetrically and slidably connected with a first wedge-shaped block (25), the inclined surfaces of two first wedge-shaped blocks (25) are oppositely arranged, and the side walls of the two first wedge-shaped blocks (25) are fixedly connected with a guide rod (27), wherein the guide rod (27) is obliquely arranged; The inner side wall of each mounting block (4) is slidably connected with a pressing block (17), each pressing block (17) is a half-circular pipe-shaped structure with one end closed, the inner side wall of each pressing block (17) is symmetrically and fixedly connected with a second wedge-shaped block (24) corresponding to the first wedge-shaped block (25), and the side walls of the first wedge-shaped block (25) and the second wedge-shaped block (24) on the same side abut and slide; The inner side wall of each guide block (26) is provided with a second sliding groove (28), and the inside of each second sliding groove (28) is slidably connected with a second sliding block (29), each guide rod (27) is slidably connected with the side wall of the corresponding second sliding block (29), and the side wall of each second sliding block (29) is fixedly connected with one end of the reset rod (21) on the same side.

2. The injection mold with good stability according to claim 1, characterized in that, Each thread block (10) is in sliding contact with the inner side wall of the box (1), the side wall of the box (1) is fixedly connected with a motor (16), one end of the output shaft of the motor (16) penetrates through the side wall of the box (1) and is fixedly connected with one end of the bidirectional lead screw (9), the side wall of each fixed seat (7) is provided with a groove (30), the side wall of each groove (30) is fixedly connected with a plurality of first springs (31), and the other ends of the plurality of first springs (31) in the same groove (30) are fixedly connected with the clamping plate (8) in common.

3. The injection mold according to claim 2, wherein The motor (16) is a forward and reverse motor, the lower mold (3) is placed on the inner bottom wall of the box (1), the bottom wall of the upper mold (2) and the top wall of the lower mold (3) are jointly provided with an injection cavity (12), and the top wall of the upper mold (2) is provided with an inlet (13) communicated with the injection cavity (12).

4. The injection mold of claim 1, wherein The inner top wall of each pressing block (17) is fixedly connected with a second spring (23), and the other end of each second spring (23) is fixedly connected with the top wall of the corresponding guide block (26).

Images