Plunger type injection molding mechanism for injection mold

Abstract

The utility model relates to the field of injection molds, and discloses a plunger type injection molding mechanism for an injection mold, which comprises a body, the top end of the body is provided with a feed hopper, the inner wall of the feed hopper is provided with a stirring assembly, the stirring assembly comprises a support plate, and the right side of the support plate is fixedly provided with a motor. A rotating rod is fixedly connected to the left side of an output shaft of the motor, the rotating rod penetrates through and is rotationally connected to the left side of the supporting plate, a disc is fixedly connected to the left side of the rotating rod, and a round rod is fixedly connected to the lower portion, away from the circle center, of the left side of the disc. According to the plastic raw material stirring device, the motor drives the disc and the round rod to rotate, so that the guide frame moves to drive the guide rod to move, the guide rod rotates while moving up and down to drive the stirring rod to rotate, caked or blocked plastic raw materials can be stirred through rotation of the stirring rod, blocking can be prevented, and the feeding speed can be increased; meanwhile, the injection molding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, and particularly to a plunger type injection mechanism for an injection mold. Background Technique

[0002] An injection mold, also known as a plastic injection molding mold, is an important tool for manufacturing plastic products. It injects molten plastic material into the mold cavity under high pressure, and after cooling and solidifying, a molded product is obtained. Injection molds are suitable for the mass production and molding of products with complex shapes, and can efficiently produce plastic products with precise dimensions and complex shapes.

[0003] With the rapid development of modern manufacturing, injection molding technology has become one of the important technologies in the field of plastic processing. Injection molding technology injects molten plastic into the cavity through a mold, and after cooling and solidifying, the required plastic product is obtained. In the injection molding process, the injection mechanism is a key component, and its performance directly affects the quality and production efficiency of the product. The injection mechanism mostly adopts a screw type or a plunger type injection mechanism. The plunger type injection mechanism uses a plunger as the main pushing element, and drives the plunger to reciprocate in the barrel through a hydraulic system to realize the heating, plasticization and injection of plastic raw materials.

[0004] However, when the injection mechanism feeds materials, plastic raw materials are usually poured into the feed hopper. After a large amount of plastic raw materials are poured into the feed hopper, if the material humidity is too high, it contains impurities or the particle size is uneven, it is easy to cause the materials to get stuck together in the feed hopper, forming lumps or blockages. This will not only affect the smooth transportation of plastic raw materials, but may also affect the subsequent plasticization and injection processes, and at the same time reduce the injection efficiency. Therefore, a plunger type injection mechanism for an injection mold is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a plunger type injection mechanism for an injection mold, aiming to improve the problem in the prior art that "after a large amount of plastic raw materials are poured into the feed hopper, the material humidity is too high, it contains impurities or the particle size is uneven, which easily causes the materials to get stuck together in the feed hopper, forming lumps or blockages, and reducing the injection efficiency".

[0006] To achieve the above object, the utility model adopts the following technical solutions: A plunger injection mechanism for an injection mold, including a body, a feed hopper is arranged at the top of the body, a stirring assembly is arranged on the inner wall of the feed hopper, the stirring assembly includes a support plate, a motor is fixedly installed on the right side of the support plate, the left side of the output shaft of the motor is fixedly connected with a rotating rod, the rotating rod penetrates and is rotatably connected to the left side of the support plate, a disc is fixedly connected to the left side of the rotating rod, a round rod is fixedly connected to the lower part of the left side of the disc away from the center of the circle, a positioning block is fixedly connected to the inner wall of the feed hopper, a protective sleeve is fixedly connected to the right side of the positioning block, a support frame is fixedly connected to the top of the feed hopper, a connecting block is slidably connected to the middle of the inner wall of the support frame, a round sleeve is fixedly connected to the left side of the connecting block, a sliding rod is rotatably connected to the inner wall of the round sleeve, and a stirring rod is fixedly connected to the outer wall of the bottom end of the sliding rod.

[0007] As a further description of the above technical solution:

[0008] A pushing assembly is arranged on the outer wall of the stirring rod, and the pushing assembly includes a stirring block, and the stirring block is fixedly connected to the outer wall of the stirring rod.

[0009] As a further description of the above technical solution:

[0010] A guide sleeve is fixedly connected to the inner wall of the protective sleeve, and an arc-shaped groove is formed in the inner wall of the guide sleeve.

[0011] As a further description of the above technical solution:

[0012] A guide rod is slidably connected to the inner wall of the arc-shaped groove, and a connecting rod is fixedly connected to the right side of the connecting block.

[0013] As a further description of the above technical solution:

[0014] A guide frame is fixedly connected to the bottom end of the connecting rod, and the round rod is slidably connected to the inner wall of the guide frame.

[0015] As a further description of the above technical solution:

[0016] A positioning disc is fixedly connected to the outer wall of the sliding rod, the positioning disc is rotatably connected to the inner wall of the round sleeve, and the sliding rod is arranged in the middle of the inner walls of the protective sleeve and the guide sleeve.

[0017] As a further description of the above technical solution:

[0018] The guide rod is fixedly connected to the front surface of the outer wall of the sliding rod, and the arc-shaped groove is arc-shaped.

[0019] As a further description of the above technical solution:

[0020] The stirring block is arranged in an inclined shape, and there are two groups of the stirring blocks, and the two groups of the stirring blocks are symmetrically arranged with the center point of the stirring rod as the axis of symmetry.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the motor drives the disc and the round rod to rotate, so that the guide frame moves to drive the round sleeve, the sliding rod and the guide rod to move. Through the movement of the guide rod, the guide rod can rotate while moving up and down, so as to drive the stirring rod to rotate. Through the rotation of the stirring rod, the agglomerated or blocked plastic raw materials can be stirred, so as to prevent blockage, improve the feeding speed, and improve the injection molding efficiency at the same time.

[0023] 2. In the utility model, by arranging the stirring block, the plastic raw materials can be shoveled and stirred, so as to improve the stirring effect, prevent more raw materials from being blocked, further improve the stirring effect, and improve the injection molding efficiency. Description of the Drawings

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the whole device in the utility model;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the feed hopper and the support plate in the utility model;

[0026] Figure 3 It is a three-dimensional structural sectional schematic diagram of the round sleeve and the protective sleeve in the utility model;

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the round rod and the guide frame in the utility model.

[0028] Legend Explanation:

[0029] 1. Body; 2. Feed hopper; 3. Support plate; 4. Motor; 5. Stirring block; 31. Rotating rod; 32. Disc; 33. Round rod; 34. Guide frame; 35. Connecting rod; 36. Connecting block; 37. Support frame; 38. Round sleeve; 39. Positioning block; 310. Protective sleeve; 311. Positioning disc; 312. Sliding rod; 313. Guide sleeve; 314. Arc groove; 315. Guide rod; 51. Stirring rod. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] Referring to Figure 1 、 Figure 2 、 Figure 4 , an embodiment provided by the present utility model: a plunger injection mechanism for an injection mold, including a body 1. The body 1 is a plunger injection molding machine for an injection mold. A feed hopper 2 for feeding is provided at the top of the body 1. A stirring assembly is provided on the inner wall of the feed hopper 2. The stirring assembly includes a support plate 3 for providing support. A motor 4 for driving the rotation of a rotating rod 31 is fixedly installed on the right side of the support plate 3. The left side of the output shaft of the motor 4 is fixedly connected to the rotating rod 31 for driving the rotation of a disc 32. The rotating rod 31 penetrates and is rotatably connected to the left side of the support plate 3. The left side of the rotating rod 31 is fixedly connected to the disc 32 for driving a round rod 33 to rotate around the center point of the disc 32.

[0032] Furthermore, a round rod 33 for driving the movement of a guide frame 34 is fixedly connected to the lower part of the left side of the disc 32 away from the center of the circle. A positioning block 39 for supporting and protecting a sleeve 310 is fixedly connected to the inner wall of the feed hopper 2. A protective sleeve 310 for preventing plastic raw materials from getting stuck in an arc-shaped groove 314 is fixedly connected to the right side of the positioning block 39. A support frame 37 for providing support and positioning for a connecting block 36 is fixedly connected to the top of the feed hopper 2. A connecting block 36 for driving the movement of a round sleeve 38 is slidably connected to the middle part of the inner wall of the support frame 37. A round sleeve 38 for driving the movement of a positioning disc 311 is fixedly connected to the left side of the connecting block 36. A sliding rod 312 for driving the movement of a guide rod 315 and a stirring rod 51 is rotatably connected to the inner wall of the round sleeve 38. A stirring rod 51 for stirring plastic raw materials by rotation is fixedly connected to the outer wall of the bottom end of the sliding rod 312.

[0033] Referring to Figure 1 、 Figure 4 , a pushing assembly is provided on the outer wall of the stirring rod 51. The pushing assembly includes a stirring block 5 for shoveling plastic raw materials and separating agglomerated plastic raw materials. The stirring block 5 is fixedly connected to the outer wall of the stirring rod 51.

[0034] Referring to Figure 2 - Figure 4, a guide sleeve 313 fixedly connected to the inner wall of the protective sleeve 310 is provided with an arc-shaped groove 314 on its inner wall. The guide rod 315 is movably connected to the inner wall of the arc-shaped groove 314 while moving through the guide rod 315. Therefore, after the guide rod 315 is squeezed by the arc-shaped groove 314, the guide rod 315 can slide along the arc-shaped inner wall of the arc-shaped groove 314, so that the guide rod 315 can rotate while moving, thereby driving the stirring rod 51 to rotate in cooperation with the stirring block 5 to separate and break up the agglomerated plastic raw materials, thus improving the feeding speed and injection molding efficiency. The inner wall of the arc-shaped groove 314 is slidably connected to a guide rod 315 that drives the sliding rod 312 to rotate. The right side of the connecting block 36 is fixedly connected to a connecting rod 35 that connects the guide frame 34 and the connecting block 36. The bottom end of the connecting rod 35 is fixedly connected to a guide frame 34 that can drive the connecting rod 35 to move. The round rod 33 is slidably connected to the inner wall of the guide frame 34.

[0035] Refer to Figure 2 - Figure 4 , a positioning disk 311 fixedly connected to the outer wall of the sliding rod 312 and supporting the sliding rod 312 while enabling the sliding rod 312 to be rotatably connected to the inner wall of the round sleeve 38 is rotatably connected to the inner wall of the round sleeve 38. The sliding rod 312 is arranged in the middle of the inner walls of the protective sleeve 310 and the guide sleeve 313. The guide rod 315 is fixedly connected to the front surface of the outer wall of the sliding rod 312. The arc-shaped groove 314 is arranged in an arc shape. By arranging the arc-shaped groove 314 in an arc shape, the guide rod 315 can rotate along the arc shape of the arc-shaped groove 314 after being squeezed by the arc-shaped groove 314 while moving, thereby driving the sliding rod 312, the stirring rod 51, and the stirring block 5 to rotate, so that the agglomerated plastic raw materials can be broken up and separated, improving the feeding effect and injection molding efficiency.

[0036] Refer to Figure 1 , Figure 4 , the stirring block 5 is arranged in an inclined shape. There are two groups of stirring blocks 5, and the two groups of stirring blocks 5 are symmetrically arranged with the center point of the stirring rod 51 as the axis of symmetry. By arranging the stirring block 5 in an inclined shape, the plastic raw materials can be shoveled up, so that the plastic raw materials can be turned over, further improving the effect of separating and breaking up the agglomerated plastic raw materials, further increasing the feeding speed of the plastic raw materials, and thus improving the efficiency of the injection mold.

[0037] Working principle: When in use, start the motor 4. The output shaft of the motor 4 drives the rotating rod 31 and the disc 32 to rotate. The disc 32 drives the round rod 33 to rotate. Since the round rod 33 is arranged at a position away from the center of the disc 32, the guide frame 34 can be driven to move by the round rod 33. The movement of the guide frame 34 drives the connecting rod 35 and the connecting block 36 to move. The movement of the connecting block 36 is supported by the support frame 37. At the same time, the round sleeve 38 is driven to move by the connecting block 36. The movement of the round sleeve 38 drives the positioning disc 311 and the sliding rod 312 to move. The sliding rod 312 drives the guide rod 315 and the stirring rod 51 to move. The guide rod 315 is slidably connected to the inner wall of the arc-shaped groove 314, and the arc-shaped groove 314 is formed in an arc shape. Therefore, the guide rod 315 can slide on the inner wall of the arc-shaped groove 314 while moving, so that the guide rod 315 can rotate while moving. Thus, the sliding rod 312 can rotate while moving. The movement and rotation of the sliding rod 312 drive the stirring rod 51 to move and rotate at the same time. The stirring rod 51 can drive the stirring block 5 to move and rotate at the same time. Therefore, the stirring block 5 can squeeze and scoop up the plastic raw materials while rotating, preventing the plastic raw materials from accumulating, caking or blocking. The cooperation between the stirring block 5 and the stirring rod 51 can stir the plastic raw materials, separating the caked plastic raw materials, preventing blockage, increasing the feeding speed, and improving the injection molding efficiency at the same time.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plunger type injection molding mechanism for an injection mold, comprising a body (1), characterized in that: A feed hopper (2) is provided at the top of the body (1), and a stirring assembly is provided on the inner wall of the feed hopper (2), wherein the stirring assembly comprises a support plate (3), a motor (4) is fixedly mounted on the right side of the support plate (3), a rotating rod (31) is fixedly connected to the left side of the output shaft of the motor (4), the rotating rod (31) penetrates and is rotatably connected to the left side of the support plate (3), a disc (32) is fixedly connected to the left side of the rotating rod (31), and a round rod (33) is fixedly connected to the left side of the disc (32) away from the center of the circle. ), the inner wall of the feed hopper (2) is fixedly connected with a positioning block (39), the right side of the positioning block (39) is fixedly connected with a protective sleeve (310), the top of the feed hopper (2) is fixedly connected with a support frame (37), the middle part of the inner wall of the support frame (37) is slidably connected with a connecting block (36), the left side of the connecting block (36) is fixedly connected with a circular sleeve (38), the inner wall of the circular sleeve (38) is rotatably connected with a sliding rod (312), and the outer wall of the bottom end of the sliding rod (312) is fixedly connected with a stirring rod (51).

2. A plunger type injection molding mechanism for an injection mold according to claim 1, characterized in that: The outer wall of the stirring rod (51) is provided with a pushing assembly, and the pushing assembly comprises a stirring block (5), and the stirring block (5) is fixedly connected to the outer wall of the stirring rod (51).

3. The plunger type injection molding mechanism for an injection mold according to claim 1, characterized in that: The inner wall of the protective sleeve (310) is fixedly connected to a guide sleeve (313), and the inner wall of the guide sleeve (313) is provided with an arc groove (314).

4. A plunger type injection molding mechanism for an injection mold according to claim 3, characterized in that: The inner wall of the arc-shaped groove (314) is slidably connected to a guide rod (315), and the right side of the connecting block (36) is fixedly connected to a connecting rod (35).

5. The plunger type injection molding mechanism for an injection mold according to claim 4, characterized in that: The bottom end of the connecting rod (35) is fixedly connected to a guide frame (34), and the round rod (33) is slidably connected to the inner wall of the guide frame (34).

6. The plunger type injection molding mechanism for an injection mold according to claim 3, characterized in that: The outer wall of the slide bar (312) is fixedly connected with a positioning plate (311), and the positioning plate (311) is rotatably connected to the inner wall of the circular sleeve (38). The slide bar (312) is arranged in the middle of the inner wall of the protective sleeve (310) and the guide sleeve (313).

7. The plunger type injection molding mechanism for an injection mold according to claim 4, characterized in that: The guide rod (315) is fixedly connected to the front surface of the outer wall of the slide rod (312), and the arc groove (314) is arranged in an arc shape.

8. The plunger type injection molding mechanism for an injection mold according to claim 2, characterized in that: The stirring blocks (5) are arranged in an inclined shape. Two groups of the stirring blocks (5) are arranged, and the two groups of the stirring blocks (5) are symmetrically arranged with the center point of the stirring rod (51) as the symmetry axis.

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