A quick mold change device for injection molding machines

Abstract

This utility model discloses a quick mold changing device for an injection molding machine, relating to the field of injection molding machine technology. It includes a base plate and a vertical plate. The vertical plate is fixedly mounted on the upper surface of the base plate. A push plate is provided on one side of the vertical plate. A hydraulic cylinder is fixedly mounted on the side of the vertical plate away from the push plate. The piston rod end of the hydraulic cylinder passes through the vertical plate and is fixedly connected to the push plate. A positioning shell is fixedly mounted on the side of the push plate away from the hydraulic cylinder. An opening is provided on the lower side of the positioning shell. A mold body is engaged inside the positioning shell. A hexagonal positioning hole is provided on the top of the positioning shell. A hexagonal positioning post is fixedly mounted on the top of the mold body and inserts into the hexagonal positioning hole. An installation rod is fixedly mounted on the bottom of the mold body. Insertion holes are provided on the side walls of both the hexagonal positioning post and the installation rod. This utility model enables efficient and precise mold changing, with convenient operation, saving time and effort.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and specifically to a quick mold change device for injection molding machines. Background Technology

[0002] An injection molding machine is a device used to produce plastic parts. Its main function is to inject molten plastic into a mold, where it cools and solidifies to form a plastic product with the required shape and size. Injection molding machines are widely used in industries such as home appliances, automobiles, medical devices, and electronics, and are an indispensable tool in modern manufacturing. Currently, in the injection molding process, it is necessary to change the injection mold in order to produce different parts.

[0003] In existing technologies, the installation between molds and injection molding machines is mostly achieved by bolt positioning and fixing. When replacing or installing molds, on the one hand, multiple positioning bolts need to be tightened and loosened, which is a lot of complicated and inconvenient operations and is not conducive to quick mold replacement. On the other hand, because bolt fixing is used, the positioning of the mold and the positional displacement during bolt tightening are prone to occur, which leads to a decrease in the accuracy of the mold after installation and is not conducive to injection molding production. Utility Model Content

[0004] In view of the problems existing in the current quick mold change device for injection molding machines, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a quick mold change device for injection molding machines, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A quick mold change device for an injection molding machine includes a base plate and a vertical plate. The vertical plate is fixedly mounted on the upper surface of the base plate. A push plate is provided on one side of the vertical plate. A hydraulic cylinder is fixedly mounted on the side of the vertical plate away from the push plate. The piston rod end of the hydraulic cylinder passes through the vertical plate and is fixedly connected to the push plate. A positioning shell is fixedly mounted on the side of the push plate away from the hydraulic cylinder. An opening is provided on the lower side of the positioning shell. A mold body is snapped into the interior of the positioning shell. A hexagonal positioning hole is provided on the top of the positioning shell. A hexagonal positioning post is fixedly mounted on the top of the mold body and is inserted into the hexagonal positioning hole. An installation rod is fixedly mounted on the bottom of the mold body. Insertion holes are provided on the side walls of the hexagonal positioning post and the installation rod. A limit plate is slidably mounted on the side of the push plate away from the installation shell. Insert rods are fixedly mounted at both ends of the limit plate near the push plate. One end of the insert rod passes through the push plate and is inserted into the corresponding insertion hole. A first limiting mechanism is provided at both ends of the push plate to restrict the movement of the limit plate.

[0008] Preferably, the first limiting mechanism includes an L-shaped rod and a baffle. Both ends of the push plate near the mounting shell are rotatably provided with rotating rods. The L-shaped rod is fixedly connected to one end of the rotating rod. The baffle is fixedly provided at the end of the L-shaped rod away from the rotating rod. The side of the baffle near the push plate abuts against the side of the limiting plate away from the push plate. Both ends of the push plate have cavities inside. A second limiting mechanism that restricts the rotation of the L-shaped rod is provided inside the cavity.

[0009] Preferably, the second limiting mechanism includes a slider and a limiting rod. The slider is slidably disposed inside the cavity, and the limiting rod is fixedly disposed on one side of the slider. One end of the limiting rod extends to the outside of the cavity. A limiting hole is formed in the middle side wall of the L-shaped rod. One outer end of the limiting rod is inserted into the limiting hole. A spring is fixedly disposed on the side of the slider away from the limiting rod, and the other end of the spring is fixedly connected to the inner wall of the cavity.

[0010] Preferably, both ends of the vertical plate are movably fitted with crossbars, and one end of the crossbars is fixedly connected to the push plate.

[0011] Preferably, both sides of the limiting plate are movably connected to the corresponding crossbar.

[0012] Preferably, both the slider and the cavity have rectangular cross-sections.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] This invention separates the limiting rod from the L-shaped rod, and then rotates the L-shaped rod around the rotating rod as an axis, causing the baffle to separate from the limiting plate. This allows the limiting plate to move away from the push plate, thereby allowing the two side inserts to move out of the corresponding mounting rods and hexagonal positioning pins. This releases the vertical limitation of the mold body. Then, the hexagonal positioning pins are removed downwards from the hexagonal positioning grooves, thus separating the mold body from the positioning shell. This enables efficient and convenient mold changing operations. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the structure of a quick mold changing device for an injection molding machine proposed in this utility model;

[0017] Figure 2 for Figure 1Enlarged structural diagram of part A in the middle section;

[0018] Figure 3 for Figure 1 A three-dimensional view of the connection structure between the central positioning shell and the main body of the mold.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base plate; 2. Vertical plate; 3. Push plate; 4. Hydraulic cylinder; 5. Positioning shell; 6. Mold body; 7. Hexagonal positioning post; 8. Limiting plate; 9. Insert rod; 10. Mounting rod; 11. Rotating rod; 12. L-shaped rod; 13. Baffle; 14. Slider; 15. Insert rod; 16. Spring; 17. Horizontal bar. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] This utility model discloses a quick mold changing device for an injection molding machine.

[0023] Reference Figure 1-3 A quick mold changing device for an injection molding machine includes a base plate 1 and a vertical plate 2. The vertical plate 2 is fixedly mounted on the upper surface of the base plate 1. A push plate 3 is provided on one side of the vertical plate 2. A hydraulic cylinder 4 is fixedly mounted on the side of the vertical plate 2 away from the push plate 3. The piston rod end of the hydraulic cylinder 4 passes through the vertical plate 2 and is fixedly connected to the push plate 3. A positioning shell 5 is fixedly mounted on the side of the push plate 3 away from the hydraulic cylinder 4. An opening is provided on the lower side of the positioning shell 5. A mold body 6 is snapped into the inside of the positioning shell 5. A hexagonal positioning hole is provided on the top of the positioning shell 5. A hexagonal positioning post 7 is fixedly mounted on the top of the mold body 6 and is inserted into the hexagonal positioning hole. An installation rod 10 is fixedly mounted on the bottom of the mold body 6. Insertion holes are provided on the side walls of the hexagonal positioning post 7 and the installation rod 10. A limit plate 8 is slidably mounted on the side of the push plate 3 away from the installation shell. Insert rods 9 are fixedly mounted on both ends of the limit plate 8 near the push plate 3. One end of the insert rod 9 passes through the push plate 3 and is inserted into the corresponding insertion hole.

[0024] Reference Figure 1-3 The push plate 3 is provided with a first limiting mechanism at both ends to restrict the movement of the limiting plate 8. The first limiting mechanism includes an L-shaped rod 12 and a baffle 13. The push plate 3 is rotatably provided with a rotating rod 11 at both ends on the side near the mounting shell. The L-shaped rod 12 is fixedly connected to one end of the rotating rod 11. The baffle 13 is fixedly provided at the end of the L-shaped rod 12 away from the rotating rod 11. The side of the baffle 13 near the push plate 3 abuts against the side of the limiting plate 8 away from the push plate 3. Both ends of the push plate 3 are provided with cavities.

[0025] Reference Figure 1-3The cavity is equipped with a second limiting mechanism to restrict the rotation of the L-shaped rod 12. The second limiting mechanism includes a slider 14 and a limiting rod 15. The slider 14 is slidably disposed inside the cavity. The limiting rod 15 is fixedly disposed on one side of the slider 14. One end of the limiting rod 15 extends to the outside of the cavity. A limiting hole is opened in the middle side wall of the L-shaped rod 12. One end of the limiting rod 15 is inserted into the limiting hole. A spring 16 is fixedly disposed on the side of the slider 14 away from the limiting rod 15. The other end of the spring 16 is fixedly connected to the inner wall of the cavity. The cross-sections of both the slider 14 and the cavity are rectangular, so that the slider 14 cannot rotate, that is, it can slide stably.

[0026] Reference Figure 1-3 Both ends of the vertical plate 2 are movably fitted with horizontal bars 17. One end of the horizontal bar 17 is fixedly connected to the push plate 3, so that the push plate 3 can slide stably. Both sides of the limiting plate 8 are movably fitted with the corresponding horizontal bars 17, so that the limiting plate 8 can slide stably.

[0027] In this invention, during use, the limiting rod 15 is separated from the L-shaped rod 12, and then the L-shaped rod 12 is rotated around the rotating rod 11 as an axis, so that the baffle 13 is separated from the limiting plate 8. This allows the limiting plate 8 to move away from the push plate 3, thereby allowing the two side insert rods 9 to move out from the corresponding mounting rods 10 and hexagonal positioning pins 7, thus releasing the vertical limitation of the mold body 6. Then, the hexagonal positioning pins 7 are removed downward from the hexagonal positioning groove, thus separating the mold body 6 from the positioning shell 5, thereby achieving efficient and convenient mold changing.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quick mold change device for an injection molding machine comprising a base plate (1) and a vertical plate (2), characterized in that, The vertical plate (2) is fixedly mounted on the upper surface of the base plate (1). A push plate (3) is provided on one side of the vertical plate (2). A hydraulic cylinder (4) is fixedly mounted on the side of the vertical plate (2) away from the push plate (3). The piston rod end of the hydraulic cylinder (4) passes through the vertical plate (2) and is fixedly connected to the push plate (3). A positioning shell (5) is fixedly mounted on the side of the push plate (3) away from the hydraulic cylinder (4). An opening is provided on the lower side of the positioning shell (5). A mold body (6) is snapped into the inside of the positioning shell (5). A hexagonal positioning hole is provided on the top of the positioning shell (5). The top of the mold body (6) is fixedly mounted. A hexagonal positioning post (7) is fixedly provided, and the hexagonal positioning post (7) is inserted into a hexagonal positioning hole. An installation rod (10) is fixedly provided at the bottom of the mold body (6). Insertion holes are provided on the side walls of the hexagonal positioning post (7) and the installation rod (10). A limit plate (8) is slidably provided on the side of the push plate (3) away from the mounting shell. Insert rods (9) are fixedly provided at both ends of the limit plate (8) near the push plate (3). One end of the insert rod (9) passes through the push plate (3) and is inserted into the corresponding insertion hole. A first limiting mechanism is provided at both ends of the push plate (3) to limit the movement of the limit plate (8).

2. The quick mold change device for injection molding machines according to claim 1, characterized in that, The first limiting mechanism includes an L-shaped rod (12) and a baffle (13). The push plate (3) has rotating rods (11) rotatably installed at both ends on the side near the mounting shell. The L-shaped rod (12) is fixedly connected to one end of the rotating rod (11). The baffle (13) is fixedly installed at the end of the L-shaped rod (12) away from the rotating rod (11). The side of the baffle (13) near the push plate (3) abuts against the side of the limiting plate (8) away from the push plate (3). Both ends of the push plate (3) have cavities. A second limiting mechanism that restricts the rotation of the L-shaped rod (12) is installed inside the cavity.

3. The quick mold change device for injection molding machines according to claim 2, characterized in that, The second limiting mechanism includes a slider (14) and a limiting rod (15). The slider (14) is slidably disposed inside the cavity. The limiting rod (15) is fixedly disposed on one side of the slider (14). One end of the limiting rod (15) extends to the outside of the cavity. A limiting hole is opened on the middle side wall of the L-shaped rod (12). One end of the limiting rod (15) is inserted into the limiting hole. A spring (16) is fixedly disposed on the side of the slider (14) away from the limiting rod (15). The other end of the spring (16) is fixedly connected to the inner wall of the cavity.

4. The quick mold change device for injection molding machines according to claim 1, characterized in that, Both ends of the vertical plate (2) are movably fitted with horizontal bars (17), and one end of the horizontal bars (17) is fixedly connected to the push plate (3).

5. The quick mold change device for injection molding machines according to claim 4, characterized in that, Both sides of the limiting plate (8) are movably connected to the corresponding crossbar (17).

6. The quick mold change device for injection molding machines according to claim 3, characterized in that, Both the slider (14) and the cavity have rectangular cross-sections.

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