Washing machine rear shell injection molding device

Abstract

The utility model is suitable for the technical field of washing machine accessory production, and provides a washing machine rear shell injection molding device which comprises a workbench, a movable mold is movably arranged on the other side of the top of the workbench, and a fixed mold is arranged on one side of the top of the workbench. An injection molding machine used for injecting raw materials into the fixed mold is arranged at the top of the workbench and located on the rear side of the fixed mold. According to the washing machine rear shell injection molding device, after a washing machine rear shell is formed, the movable mold moves backwards to a certain position, the movable supporting plate drives the cutting knives to move to the rear side of an injection molding part, the two cutting knives are started to cut a sprue in the surface of the injection molding part, and after cutting is completed, the injection molding part is cut; the cutting knives are moved to the two ends to ensure that use of the fixed mold and the movable mold is not interfered, then the surfaces of the two cutting knives are cleaned through the sponge blocks, the pouring gate falls into the collecting frame to be collected, the pouring gate is cut off during injection molding, and therefore the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of washing machine accessories production, in particular to an injection molding device for a washing machine rear shell. Background Art

[0002] The commonly used materials for injection molding of washing machine back shells include polypropylene (PP), polystyrene (PS), ABS plastic, nylon (PA) and polycarbonate (PC). These materials have their own characteristics. For example, polypropylene has good fluidity, excellent molding performance and excellent heat resistance; ABS plastic has high mechanical strength, strong impact resistance and good creep resistance; nylon has high crystallinity, high mechanical strength and good toughness.

[0003] In existing washing machine rear shell injection molding systems, during the injection molding process, plastic melt enters the mold cavity channel, forming a gate, typically located on the product surface. However, this often requires additional steps after injection molding, either manually or using specialized cutting equipment to remove the gate, increasing costs and reducing production efficiency. Utility Model Content

[0004] The utility model provides an injection molding device for a rear shell of a washing machine, aiming to solve the problem that manual labor or special cutting equipment is required for cutting, thereby increasing costs and reducing production efficiency.

[0005] The utility model is implemented as follows: a washing machine rear shell injection molding device includes a workbench, a movable mold is movably provided on the other side of the top of the workbench, a fixed mold is provided on one side of the top of the workbench, and an injection molding machine for injecting raw materials into the fixed mold is provided on the top of the workbench and located behind the fixed mold;

[0006] A first movable plate is movably provided at both ends of the workbench and between the movable mold and the fixed mold, a support plate is movably provided on the front side of the first movable plate, two cutting knives that can move inward are provided at the bottom of the support plate, a second movable plate is slidably provided on the top of the workbench and behind the cutting knife, a sponge block for cleaning the surface of the cutting knife is movably provided at the bottom of the second movable plate, and a collection frame for collecting gate impurities is provided inside the workbench and below the movable mold.

[0007] Preferably, a hydraulic cylinder is laterally arranged on one side of the top of the workbench, and the movable mold is fixedly connected to one end of the hydraulic cylinder.

[0008] Preferably, one end of the workbench is vertically and fixedly connected with a first containing box, a first motor is fixedly connected to the top end of the first containing box, a first threaded rod is fixedly connected to the output shaft of the first motor, a first threaded sleeve is threadedly connected to the surface of the first threaded rod, and one end of the first movable plate is fixedly connected to the surface of the first threaded sleeve.

[0009] Preferably, a plurality of electric telescopic rods are fixedly connected to the front side of the first movable plate, and the rear side of the supporting plate is fixedly connected with the front end of each electric telescopic rod.

[0010] Preferably, a second motor is fixedly connected to one end of the supporting plate, a bidirectional threaded rod is fixedly connected to the output shaft of the second motor, second threaded sleeves are threadedly connected to both ends of the bidirectional threaded rod, and each cutting knife is fixedly connected with the lower surface of each second threaded sleeve.

[0011] Preferably, electric sliding rails are arranged at both ends of the upper surface of the workbench, sliding blocks are slidably arranged on the surfaces of the electric sliding rails, vertical rods are fixedly connected to the top of each sliding block, and the second movable plate is fixedly connected between the two vertical rods.

[0012] Preferably, two second containing boxes corresponding to the cutting knives are vertically arranged on the front side of the second movable plate, a third motor is fixedly connected to the top end of each second containing box, a second threaded rod is fixedly connected to the output shaft of the third motor, a third threaded sleeve is threadedly connected to the surface of the second threaded rod, and the sponge block is fixedly connected to the surface of the third threaded sleeve at one end.

[0013] Preferably, a discharging pipe extends to one side from the bottom of the collecting frame, and the other end of the discharging pipe is connected with the outside. Beneficial effects

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] First, the fixed mold and the movable mold are installed at the specified position of the workbench, the injection molding machine is started, the molten raw material is injected into the fixed mold, the molten plastic raw material is injected into the cavity formed between the fixed mold and the movable mold by starting the movable mold and adhering to the fixed mold, after the washing machine rear shell is formed, the movable mold moves backward, moves to a certain position, drives the cutting knives to move to the rear side of the injection molding part by moving the supporting plate, cuts the sprue on the surface of the injection molding part by starting the two cutting knives, moves the cutting knives to the two ends to ensure that the cutting knives do not interfere with the use of the fixed mold and the movable mold after the cutting is completed, and then the surfaces of the two cutting knives are cleaned by the sponge block, and the sprue falls into the collecting frame for collection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a front cross-sectional structural diagram of the present invention;

[0018] Figure 3 It is a schematic diagram of the top view structure of the utility model.

[0019] In the figure: 1. workbench; 2. movable mold; 3. fixed mold; 4. hydraulic cylinder; 5. injection molding machine; 6. cutting knife; 7. first storage box; 8. second storage box; 9. sponge block; 10. collection frame; 11. electric telescopic rod; 12. support plate; 13. first motor; 14. first threaded rod; 15. first threaded sleeve; 16. first movable plate; 17. second motor; 18. bidirectional threaded rod; 19. second threaded sleeve; 20. electric slide rail; 21. sliding block; 22. vertical rod; 23. second movable plate; 24. third motor; 25. third threaded sleeve; 26. discharge pipe; 27. second threaded rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See also Figure 1-3 The utility model provides a washing machine rear shell injection molding device, including a workbench 1, a movable mold 2 is movably provided on the other side of the top of the workbench 1, a fixed mold 3 is provided on one side of the top of the workbench 1, and an injection molding machine 5 for injecting raw materials into the fixed mold 3 is provided on the top of the workbench 1 and at the rear side of the fixed mold 3.

[0022] The fixed mold 3 and the movable mold 2 are combined to form a cavity for molding the plastic component of the rear shell of the washing machine.

[0023] The movable mold 2 allows the mold to be opened and closed conveniently, making it easy to take out the finished product.

[0024] The injection molding machine 5 is used to inject molten raw materials into the fixed mold 3 to form a desired product shape.

[0025] A first movable plate 16 is provided at both ends of the workbench 1 and is located between the movable mold 2 and the fixed mold 3 so as to be liftable. A support plate 12 is movably provided on the front side of the first movable plate 16, and two cutting knives 6 that can move inward are provided at the bottom of the support plate 12. A second movable plate 23 is slidably provided on the top of the workbench 1 and is located behind the cutting knife 6. A sponge block 9 for cleaning the surface of the cutting knife 6 is provided at the bottom of the second movable plate 23 so as to be liftable. A collection frame 10 for collecting gate impurities is provided inside the workbench 1 and is located below the movable mold 2.

[0026] The gate is the part that connects the plastic part to the nozzle of the injection molding machine 5 and is removed by the cutting knife 6.

[0027] After the cutting blade 6 has completed cutting the gate, the sponge block 9 is driven to move to the surface of the cutting blade 6 to clean the surface of the cutting blade 6.

[0028] The cut gate will fall into the collection frame 10 for collection.

[0029] First, install the fixed mold 3 and the movable mold 2 at the designated position of the workbench 1, start the injection molding machine 5, inject the molten raw material into the fixed mold 3, and inject the molten plastic raw material into the cavity formed between the fixed mold 3 and the movable mold 2 by starting the movable mold 2 to fit the fixed mold 3. After the rear shell of the washing machine is formed, the movable mold 2 moves backward. After moving to a certain position, the cutting knife 6 is driven to move to the rear side of the injection molded part by the movable support plate 12. The gate on the surface of the injection molded part is cut by starting the two cutting knives 6. After the cutting is completed, the cutting knife 6 is moved to both ends to ensure that it does not interfere with the use of the fixed mold 3 and the movable mold 2. Then, the surface of the two cutting knives 6 is cleaned with the sponge block 9, and the gate falls into the collection frame 10 for collection.

[0030] Furthermore, a hydraulic cylinder 4 is laterally provided on one side of the top of the workbench 1 , and the movable mold 2 is fixedly connected to one end of the hydraulic cylinder 4 .

[0031] In this embodiment, the hydraulic cylinder 4 is started to generate thrust to push the movable mold 2 toward the fixed mold 3. When the movable mold 2 is in close contact with the fixed mold 3, the mold closing operation is completed. After the mold closing is completed, the injection molding machine 5 is started to inject the molten plastic raw material into the mold cavity.

[0032] Furthermore, one end of the workbench 1 is vertically fixedly connected to a first accommodating box 7, the top of the first accommodating box 7 is fixedly connected to a first motor 13, the output shaft of the first motor 13 is fixedly connected to a first threaded rod 14, the surface of the first threaded rod 14 is threadedly connected to a first threaded sleeve 15, one end of the first movable plate 16 is fixedly connected to the surface of the first threaded sleeve 15, the front side of the first movable plate 16 is fixedly connected to a plurality of electric telescopic rods 11, and the rear side of the support plate 12 is fixedly connected to the front end of each of the electric telescopic rods 11.

[0033] In this embodiment, by adjusting the height of the support plate 12 , interference with the operation of the movable mold 2 and the fixed mold 3 can be avoided, and the cutting blade 6 can be adjusted to cut plastic parts with gates of different sizes.

[0034] By starting the first motor 13, its output shaft rotates, thereby driving the first threaded rod 14 to rotate. Since the first threaded sleeve 15 is threadedly connected to the first threaded rod 14, when the first threaded rod 14 rotates, the first threaded sleeve 15 will move along the axial direction of the threaded rod, thereby driving the first movable plate 16 to rise and fall. When the position of the support plate 12 needs to be adjusted, the electric telescopic rod 11 can be started to make it telescopic, thereby pushing the support plate 12 to move forward and backward.

[0035] Furthermore, one end of the support plate 12 is fixedly connected to a second motor 17, the output shaft of the second motor 17 is fixedly connected to a bidirectional threaded rod 18, both ends of the bidirectional threaded rod 18 are threadedly connected to a second threaded sleeve 19, and each of the cutting knives 6 is fixedly connected to the lower surface of each second threaded sleeve 19.

[0036] In this embodiment, by starting the second motor 17, the output shaft thereof rotates, thereby driving the bidirectional threaded rod 18 to rotate. When the second threaded sleeve 19 moves, the cutting knife 6 fixedly connected thereto will also move accordingly, thereby realizing the gate cutting operation.

[0037] Furthermore, electric slide rails 20 are provided at both ends of the upper surface of the workbench 1, and a sliding block 21 is slidably provided on the surface of each electric slide rail 20. The top of each sliding block 21 is fixedly connected to a vertical rod 22, and the second movable plate 23 is fixedly connected between the two vertical rods 22.

[0038] In this embodiment, by controlling the motor of the electric slide rail 20, the linear motion of the sliding block 21 on the slide rail can be achieved. When the sliding block 21 moves, the vertical rod 22 and the second movable plate 23 fixedly connected to it will also move accordingly, thereby driving the sponge block 9 to move and move to the surface of the cutting knife 6.

[0039] Furthermore, two second accommodating boxes 8 corresponding to the cutting knife 6 are vertically provided on the front side of the second movable plate 23, and the top of the second accommodating box 8 is fixedly connected to the third motor 24, and the output shaft of the third motor 24 is fixedly connected to the second threaded rod 27, and the surface of the second threaded rod 27 is threadedly connected to the third threaded sleeve 25, and one end of the sponge block 9 is fixedly connected to the surface of the third threaded sleeve 25.

[0040] In this embodiment, the sponge block 9 can be replaced when it becomes dirty or worn.

[0041] When the cutting blade 6 needs to be cleaned, the third motor 24 is started, and the output shaft of the third motor 24 drives the second threaded rod 27 to rotate. As the second threaded rod 27 rotates, the third threaded sleeve 25 moves along the axial direction of the second threaded rod 27, thereby driving the sponge block 9 to move downward to clean the surface of the cutting blade 6. After cleaning is completed, the third motor 24 will reverse or continue to rotate to return the sponge block 9 to its initial position.

[0042] A feeding pipe 26 is extended from the bottom of the collecting frame 10 to one side, and the other end of the feeding pipe 26 is connected to the outside.

[0043] In this embodiment, a valve may be provided on the discharge pipe 26. When the material in the collecting frame 10 reaches a certain amount or needs to be discharged, the valve can be opened to discharge the gate in the collecting frame 10.

[0044] The working principle and usage process of the present invention: After the present invention is installed, first install the fixed mold 3 and the movable mold 2 at the designated positions of the workbench 1, start the injection molding machine 5, inject the molten raw material into the fixed mold 3, and start the movable mold 2 to fit the fixed mold 3 to inject the molten plastic raw material into the cavity formed between the fixed mold 3 and the movable mold 2. After the rear shell of the washing machine is formed, the movable mold 2 moves backward. After moving to a certain position, the cutting knife 6 is driven to move to the rear side of the injection molded part by the movable support plate 12. The gate on the surface of the injection molded part is cut by starting the two cutting knives 6. After the cutting is completed, the cutting knife 6 is moved to both ends to ensure that it does not interfere with the use of the fixed mold 3 and the movable mold 2. Then, the surface of the two cutting knives 6 is cleaned with the sponge block 9, and the gate falls into the collection frame 10 for collection.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A washing machine rear shell injection molding device, characterized by: The invention comprises a workbench (1), a movable mold (2) is movably provided on the other side of the top of the workbench (1), a fixed mold (3) is provided on one side of the top of the workbench (1), and an injection molding machine (5) for injecting raw materials into the fixed mold (3) is provided on the top of the workbench (1) and at the rear side of the fixed mold (3); A first movable plate (16) is movably provided at both ends of the workbench (1) and between the movable mold (2) and the fixed mold (3); a support plate (12) is movably provided on the front side of the first movable plate (16); two cutting knives (6) that can move inward are provided at the bottom of the support plate (12); a second movable plate (23) is slidably provided on the top of the workbench (1) and behind the cutting knives (6); a sponge block (9) for cleaning the surface of the cutting knives (6) is movably provided at the bottom of the second movable plate (23); a collecting frame (10) for collecting gate impurities is provided inside the workbench (1) and below the movable mold (2).

2. The washing machine rear shell injection molding device according to claim 1, characterized in that: A hydraulic cylinder (4) is laterally arranged on one side of the top of the workbench (1), and the movable mold (2) is fixedly connected to one end of the hydraulic cylinder (4).

3. The washing machine rear shell injection molding device according to claim 1, characterized in that: One end of the workbench (1) is vertically fixedly connected to a first accommodating box (7), a top end of the first accommodating box (7) is fixedly connected to a first motor (13), an output shaft of the first motor (13) is fixedly connected to a first threaded rod (14), a surface of the first threaded rod (14) is threadedly connected to a first threaded sleeve (15), and one end of the first movable plate (16) is fixedly connected to a surface of the first threaded sleeve (15).

4. The washing machine rear shell injection molding device according to claim 3, characterized in that: The front side of the first movable plate (16) is fixedly connected to a plurality of electric telescopic rods (11), and the rear side of the support plate (12) is fixedly connected to the front end of each electric telescopic rod (11).

5. The washing machine rear shell injection molding device according to claim 1, characterized in that: One end of the support plate (12) is fixedly connected to a second motor (17), an output shaft of the second motor (17) is fixedly connected to a bidirectional threaded rod (18), both ends of the bidirectional threaded rod (18) are threadedly connected to a second threaded sleeve (19), and each of the cutting knives (6) is fixedly connected to the lower surface of each second threaded sleeve (19).

6. The washing machine rear shell injection molding device according to claim 1, characterized in that: Both ends of the upper surface of the workbench (1) are provided with electric slide rails (20), and a sliding block (21) is slidably provided on the surface of each electric slide rail (20), and the top of each sliding block (21) is fixedly connected to a vertical rod (22), and the second movable plate (23) is fixedly connected between the two vertical rods (22).

7. The washing machine rear shell injection molding device according to claim 1, characterized in that: Two second accommodating boxes (8) corresponding to the cutting blades (6) are vertically arranged on the front side of the second movable plate (23); a third motor (24) is fixedly connected to the top of the second accommodating box (8); an output shaft of the third motor (24) is fixedly connected to a second threaded rod (27); a third threaded sleeve (25) is threadedly connected to the surface of the second threaded rod (27); and one end of the sponge block (9) is fixedly connected to the surface of the third threaded sleeve (25).

8. The washing machine rear shell injection molding device according to claim 1, characterized in that: A discharge pipe (26) extends from the bottom of the collecting frame (10) to one side, and the other end of the discharge pipe (26) is connected to the outside.

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