A plastic compression molding machine for producing plastic products

Abstract

This utility model discloses a plastic compression molding machine for producing plastic products, including a heating box, a base, and two pressure mold plates. A fixed frame is fixedly connected to the top of the base, and the heating box is fixedly installed on the top of the fixed frame. A connecting pipe is fixedly connected to the bottom of the heating box, and a first solenoid valve is installed on the connecting pipe. A measuring box is connected to the bottom of the connecting pipe, and an injection assembly is connected to the bottom of the measuring box. A second solenoid valve is connected to the injection assembly. A fixed plate is fixedly connected to the side of the measuring box, and a pusher seat is slidably and sealed inside the measuring box. A first hydraulic cylinder is fixedly installed on the fixed plate, and the telescopic rod of the first hydraulic cylinder is fixedly connected to the side of the pusher seat. A transparent baffle is fixedly connected to the side of the measuring box, and scale lines are set at the positions corresponding to the transparent baffle on the side of the measuring box, which facilitates accurate control of the raw material injected between the two pressure mold plates and ensures the quality of plastic product production.

Description

Technical Field

[0001] This utility model relates to the field of plastic compression molding machine technology, and more specifically, it relates to a plastic compression molding machine for producing plastic products. Background Technology

[0002] Compression molding machines are mainly suitable for producing roll films of polyvinyl chloride, polystyrene, polypropylene, etc., as well as vacuum forming and compression molding machines for various plastic products. In the compression molding machine, the required amount of resin is supplied to the workpiece, and then the workpiece and resin are clamped and squeezed between the fixed mold and the movable mold. By squeezing the workpiece and resin, the workpiece and resin are molded together.

[0003] A search revealed that a Chinese utility model patent with application number CN202222230294.X discloses a plastic compression molding machine for producing plastic products, including a fixing mechanism, a feeding device for melting and feeding materials, and a conveying device for discharging materials. The feeding device is located above the conveying device, the fixing mechanism is located below the conveying device, and a ramp is located on one side of the conveying device. It also includes a cooling and demolding mechanism for manufacturing and demolding.

[0004] In use, the material is fed through the feeding pipe and melted by the heating pipe. The material then enters the pressure mold plate through the discharge pipe. The hydraulic rod pushes the pressure mold plate to press the mold. However, it is not convenient to control the amount of material injected into the pressure mold plate according to the size of the mold. When a large amount of material is injected, the material is easily squeezed out during the pressing process. When a small amount of material is injected, the plastic product after pressing is incomplete, thus affecting the quality of plastic product production. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a plastic compression molding machine for producing plastic products, so as to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a plastic compression molding machine for producing plastic products, comprising a heating box, a base, and two pressure mold plates. A fixed frame is fixedly connected to the top of the base. The heating box is fixedly installed on the top of the fixed frame. A connecting pipe is fixedly connected to the bottom of the heating box. A first solenoid valve is installed on the connecting pipe. A measuring box is connected to the bottom of the connecting pipe. An injection assembly is connected to the bottom of the measuring box. A second solenoid valve is connected to the injection assembly. A fixed plate is fixedly connected to the side of the measuring box. A pusher seat is slidably and sealed inside the measuring box. A first hydraulic cylinder is fixedly installed on the fixed plate. The telescopic rod of the first hydraulic cylinder is fixedly connected to the side of the pusher seat. A transparent baffle is fixedly connected to the side of the measuring box. Scale lines are provided at positions corresponding to the transparent baffle on the side of the measuring box. The two pressure mold plates are connected to the fixed frame through a connecting mechanism, facilitating accurate control of the raw material injected between the two pressure mold plates and ensuring the quality of the produced plastic products.

[0009] The present invention is further configured such that the injection assembly includes a first injection tube and a second hydraulic cylinder. The first injection tube is connected to the interior of the measuring box. A second solenoid valve is installed on the first injection tube. A second injection tube is slidably arranged outside the first injection tube. An injection nozzle is connected to the bottom end of the second injection tube. A horizontal plate is fixedly connected to the second injection tube. The second hydraulic cylinder is fixedly installed on a fixed frame. The telescopic rod of the second hydraulic cylinder is fixedly connected to the top end of the horizontal plate, so as to facilitate the insertion of the injection nozzle into the interior of the two pressure mold plates.

[0010] The present invention is further configured such that the connecting mechanism includes two fixed seats, both of which are fixedly connected to a fixed frame; one pressure mold plate is fixedly connected to one fixed seat; a third hydraulic cylinder is fixedly connected to the other fixed seat; an extension end of the third hydraulic cylinder is fixedly connected to an installation plate; another pressure mold plate is fixedly connected to the installation plate; and inlets are provided at positions corresponding to the injection nozzles on the two pressure mold plates, which facilitates the compression molding of molten raw materials into plastic products.

[0011] The present invention is further configured such that a box cover is fixedly connected to the top of the heating box, a motor is fixedly installed on the box cover, a rotating shaft is fixedly connected to the output end of the motor, and multiple stirring plates are fixedly connected to the outside of the rotating shaft, so as to facilitate stirring of the raw materials inside the heating box and to facilitate uniform heating of the raw materials.

[0012] The present invention is further configured such that a feeding pipe is connected to the box cover, and a pipe cap is threaded onto the feeding pipe, which facilitates the addition of raw materials for the production of plastic products into the heating box.

[0013] The present invention is further provided that the cap is provided with a vent, and a filter screen is fixedly connected inside the vent to facilitate the air circulation between the inside and outside of the heating box, while the filter screen prevents impurities from falling into the inside of the heating box.

[0014] The present invention is further configured such that a screw is threadedly connected to the fixed plate, a positioning seat is fixedly connected to one end of the screw extending into the measuring box, and a throttle is fixedly connected to the other end of the screw, which facilitates positioning of the pusher seat.

[0015] The present invention is further provided in that the base is provided with an inclined groove below the pressure mold plate, and a collection box is placed at the side end of the base corresponding to the inclined groove, so as to facilitate the collection of plastic products.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a plastic compression molding machine for producing plastic products, which has the following beneficial effects:

[0018] 1. The first hydraulic cylinder drives the pusher plate to move. The pusher plate is adjusted to the corresponding scale line position according to the amount of raw material required for producing plastic products. The molten raw material inside the heating box flows into the measuring box. When the measuring box is full of raw material, the pusher plate pushes the raw material into the two pressure mold plates and then performs molding. This facilitates accurate control of the raw material injected between the two pressure mold plates and ensures the quality of plastic product production.

[0019] 2. The second hydraulic cylinder drives the horizontal plate, the second injection tube and the injection nozzle to move up and down, which facilitates the adjustment of the height of the injection nozzle and makes it easy to adjust the injection nozzle to the injection port of the pressure mold plate at different heights.

[0020] 3. The heating chamber heats the raw materials inside until they are molten. At the same time, the motor drives the rotating shaft and multiple stirring plates to stir the raw materials inside the heating chamber, thereby improving the uniformity of heating. Attached Figure Description

[0021] Figure 1 This is a front structural diagram of a plastic compression molding machine for producing plastic products according to the present invention.

[0022] Figure 2 This is a structural diagram showing the assembly of the fixing frame, heating box, measuring box, injection assembly, connecting mechanism, and two pressure mold plates in this utility model.

[0023] Figure 3This is a schematic diagram of the structure of the connecting pipe, measuring box, first hydraulic cylinder, screw, positioning and injection mechanism in this utility model.

[0024] Figure 4 This is a structural diagram showing the assembly of the central box cover, rotating shaft, and multiple stirring plates of this utility model.

[0025] Figure 5 This is a structural diagram showing the connection between the box cover, motor, feeding pipe, and pipe cap of this utility model.

[0026] In the diagram: 1. Heating box; 2. Base; 3. Pressure mold plate; 4. Fixing frame; 5. Connecting pipe; 6. Measuring box; 7. Second solenoid valve; 8. Fixing plate; 9. Pusher seat; 10. First hydraulic cylinder; 11. Transparent baffle; 12. Scale line; 13. First injection pipe; 14. Second hydraulic cylinder; 15. Second injection pipe; 16. Injection nozzle; 17. Horizontal plate; 18. Fixing seat; 19. Third hydraulic cylinder; 20. Mounting plate; 21. Feed inlet; 22. Box cover; 23. Motor; 24. Rotating shaft; 25. Stirring plate; 26. Feeding pipe; 27. Pipe cap; 28. Vent; 29. ​​Filter screen; 30. Screw; 31. Positioning seat; 32. Rotary handle; 33. Inclined groove; 34. Collection box; 35. First solenoid valve. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5A plastic compression molding machine for producing plastic products includes a heating box 1, a base 2, and two pressure mold plates 3. The heating box 1 is internally equipped with heating plates and other structures for heating the raw materials. The installation structure of the heating plates can be carried out according to techniques known to those skilled in the art. Corresponding cooling structures are installed on the two pressure mold plates 3 according to techniques known to those skilled in the art. A fixing frame 4 is fixedly connected to the top of the base 2, and the heating box 1 is fixedly installed on the top of the fixing frame 4. A connecting pipe 5 is fixedly connected to the bottom of the heating box 1, and a first solenoid valve 35 is installed on the connecting pipe 5. A measuring box 6 is connected to the bottom of the connecting pipe 5, and an injection assembly is connected to the bottom of the measuring box 6. A second solenoid valve 7 is connected to the injection assembly. A fixing plate 8 is fixedly connected to the side of the measuring box 6, and a pusher seat 9 is slidably and sealed inside the measuring box 6. A first hydraulic cylinder 10 is fixedly installed on plate 8. The telescopic rod of the first hydraulic cylinder 10 is fixedly connected to the side end of the pusher seat 9. A transparent baffle 11 is fixedly connected to the side end of the measuring box 6. A scale line 12 is set at the position corresponding to the transparent baffle 11 on the side end of the measuring box 6. Two pressure mold plates 3 are connected to the fixed frame 4 through a connecting mechanism. An inclined groove 33 is set on the base 2 below the pressure mold plate 3. A collection box 34 is placed at the position corresponding to the inclined groove 33 on the side end of the base 2. Plastic products fall into the interior of the inclined groove 33 and slide down from the inclined groove 33 into the interior of the collection box 34. The plastic products are collected by the collection box 34. A screw 30 is threadedly connected to the fixed plate 8. A positioning seat 31 is fixedly connected to one end of the screw 30 that extends into the interior of the measuring box 6. A handle 32 is fixedly connected to the other end of the screw 30 to facilitate positioning of the pusher seat 9.

[0031] Specifically, the first hydraulic cylinder 10 drives the pusher plate to move. According to the amount of raw material required for producing plastic products, the pusher plate is adjusted to the corresponding scale line 12 position. The molten raw material inside the heating box 1 flows into the measuring box 6. When the measuring box 6 is full of raw material, the pusher plate pushes the raw material into the two pressure mold plates 3, and then the molding is performed. This facilitates accurate control of the raw material injected into the two pressure mold plates 3, ensuring the quality of plastic product production.

[0032] Please see Figure 2The injection assembly includes a first injection tube 13 and a second hydraulic cylinder 14. The first injection tube 13 is connected to the interior of the measuring box 6. A second solenoid valve 7 is installed on the first injection tube 13. A second injection tube 15 is slidably disposed outside the first injection tube 13. The bottom end of the second injection tube 15 is connected to an injection nozzle 16. A horizontal plate 17 is fixedly connected to the second injection tube 15. The second hydraulic cylinder 14 is fixedly mounted on the fixing frame 4. The telescopic rod of the second hydraulic cylinder 14 is fixedly connected to the top end of the horizontal plate 17, facilitating the insertion of the injection nozzle 16 into the two... Inside the pressure mold plate 3, the connecting mechanism includes two fixed seats 18, both of which are fixedly connected to the fixed frame 4. One pressure mold plate 3 is fixedly connected to one fixed seat 18, and a third hydraulic cylinder 19 is fixedly connected to the other fixed seat 18. The telescopic end of the third hydraulic cylinder 19 is fixedly connected to the mounting plate 20. The other pressure mold plate 3 is fixedly connected to the mounting plate 20. The two pressure mold plates 3 are provided with inlet ports 21 at positions corresponding to the injection nozzle 16, which facilitates the compression molding of molten raw materials into plastic products.

[0033] Specifically, the second hydraulic cylinder 14 drives the horizontal plate 17, the second injection tube 15 and the injection nozzle 16 to move up and down, which facilitates the adjustment of the height of the injection nozzle 16 and makes it easy to adjust the injection nozzle 16 to the injection port on the pressure mold plate 3 at different heights.

[0034] Please see Figure 4 and Figure 5 A cover 22 is fixedly connected to the top of the heating chamber 1. A motor 23 is fixedly installed on the cover 22. A rotating shaft 24 is fixedly connected to the output end of the motor 23. Multiple stirring plates 25 are fixedly connected to the outside of the rotating shaft 24. A feeding pipe 26 is connected to the cover 22. A pipe cap 27 is threaded onto the feeding pipe 26 to facilitate the addition of raw materials for producing plastic products into the heating chamber 1. A vent 28 is provided on the pipe cap 27. A filter screen 29 is fixedly connected inside the vent 28 to facilitate the air circulation between the inside and outside of the heating chamber 1. At the same time, the filter screen 29 prevents impurities from falling into the inside of the heating chamber 1.

[0035] Specifically, the heating chamber 1 heats the raw materials inside to a molten state. At the same time, the motor 23 drives the rotating shaft 24 and multiple stirring plates 25 to rotate, and the multiple stirring plates 25 stir the raw materials inside the heating chamber 1 to improve the uniformity of heating.

[0036] In summary, when using the overall equipment:

[0037] Based on the amount of raw materials required for producing plastic products, the positioning seat 31 is adjusted to the corresponding position by rotating the screw 30. When the side end of the pusher plate contacts the side end of the positioning seat 31, the scale value displayed on the scale line 12 at the end of the pusher plate away from the positioning seat 31 is exactly equal to the amount of raw materials required for producing plastic products. The first solenoid valve 35 is opened, and the molten raw material inside the heating box 1 flows into the measuring box 6. After the measuring box 6 is full of raw material, the first solenoid valve 35 is closed, and the corresponding pressure mold plate 3 is moved by the third hydraulic cylinder 19, so that the two pressure mold plates 3 cooperate. The second hydraulic cylinder 14 pushes the second injection pipe 15 and the injection nozzle 16 downward, and the injection nozzle 16 is inserted. The material is fed into the injection port, and then the second solenoid valve 7 is opened. Then, the first hydraulic cylinder 10 pushes the pusher plate to move, and the material inside the measuring box 6 is injected into the two pressure mold plates 3 through the first injection pipe 13, the second injection pipe 15 and the injection nozzle 16. The two pressure mold plates 3 are squeezed by the third hydraulic cylinder 19. Then, the cooling structure connected to the two pressure mold plates 3 cools the pressure mold plates 3 and the material inside. After cooling, the corresponding pressure mold plates 3 are pulled by the third hydraulic cylinder 19 to move, so that the two pressure mold plates 3 are separated. The molded plastic product falls into the chute 33 and slides into the collection box 34, where the plastic product is collected.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components. For connections between two parts, welding, bolt and nut connections, bolt or screw connections, or other known connection methods can be selected according to the actual situation, which will not be elaborated here. Whenever a fixed connection is mentioned above, we should consider welding connections or connections through bolts or other structural connections. For fixed connections not specifically described in the embodiments, bolt connections are preferred if disassembly is required during use. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic compression molding machine for producing plastic products, comprising a heating tank (1), a base (2) and two pressure mold plates (3), characterized in that: The top of the base (2) is fixedly connected to a fixed frame (4). The heating box (1) is fixedly installed on the top of the fixed frame (4). The bottom of the heating box (1) is fixedly connected to a connecting pipe (5). A first solenoid valve (35) is installed on the connecting pipe (5). The bottom of the connecting pipe (5) is connected to a measuring box (6). The bottom of the measuring box (6) is connected to an injection assembly. A second solenoid valve (7) is connected to the injection assembly. The side of the measuring box (6) is fixedly connected to a fixed plate (8). The inside of the measuring box (6) is sealed and slidably equipped with a pusher seat (9). A first hydraulic cylinder (10) is fixedly installed on the fixed plate (8). The telescopic rod of the first hydraulic cylinder (10) is fixedly connected to the side of the pusher seat (9). The side of the measuring box (6) is fixedly connected to a transparent baffle (11). The side of the measuring box (6) and the position corresponding to the transparent baffle (11) are provided with scale lines (12). Two pressure mold plates (3) are connected to the fixed frame (4) through a connecting mechanism.

2. A plastic compression molding machine for producing plastic products according to claim 1, characterized in that: The injection assembly includes a first injection tube (13) and a second hydraulic cylinder (14). The first injection tube (13) is connected to the inside of the measuring box (6). The second solenoid valve (7) is installed on the first injection tube (13). The second injection tube (15) is slidably arranged on the outside of the first injection tube (13). The bottom end of the second injection tube (15) is connected to the injection nozzle (16). A horizontal plate (17) is fixedly connected to the second injection tube (15). The second hydraulic cylinder (14) is fixedly installed on the fixed frame (4). The telescopic rod of the second hydraulic cylinder (14) is fixedly connected to the top end of the horizontal plate (17).

3. A plastic compression molding machine for producing plastic products according to claim 1, characterized in that: The connecting mechanism includes two fixed seats (18), both of which are fixedly connected to the fixed frame (4). One pressure mold plate (3) is fixedly connected to one fixed seat (18), and a third hydraulic cylinder (19) is fixedly connected to the other fixed seat (18). The telescopic end of the third hydraulic cylinder (19) is fixedly connected to the mounting plate (20). The other pressure mold plate (3) is fixedly connected to the mounting plate (20). The two pressure mold plates (3) are provided with inlets (21) at positions corresponding to the injection nozzle (16).

4. A plastic compression molding machine for producing plastic products according to claim 1, characterized in that: The top of the heating box (1) is fixedly connected to a box cover (22), a motor (23) is fixedly installed on the box cover (22), a rotating shaft (24) is fixedly connected to the output end of the motor (23), and multiple stirring plates (25) are fixedly connected to the outside of the rotating shaft (24).

5. A plastic compression molding machine for producing plastic products according to claim 4, characterized in that: The box cover (22) is connected to a feeding pipe (26), and a pipe cap (27) is threaded onto the feeding pipe (26).

6. A plastic compression molding machine for producing plastic products according to claim 5, characterized in that: The cap (27) is provided with an air vent (28), and a filter screen (29) is fixedly connected inside the air vent (28).

7. A plastic compression molding machine for producing plastic products according to claim 1, characterized in that: A screw (30) is threaded onto the fixing plate (8). One end of the screw (30) extending into the measuring box (6) is fixedly connected to a positioning seat (31), and the other end of the screw (30) is fixedly connected to a throttle (32).

8. A plastic compression molding machine for producing plastic products according to claim 1, characterized in that: The inclined chute (33) is arranged below the pressure die plate (3) on the base (2), and the side end of the base (2) is placed with the collecting box (34) at the position corresponding to the inclined chute (33).

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