PP plate plastic hot melting forming device

Abstract

The utility model relates to hot melt forming field discloses a kind of PP board plastics hot melt forming device, including machine body, the top of the machine body is fixedly connected with support, the top of the support is fixedly connected with hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with hot melt plate through heat insulation plate, the surface of the machine body is provided with mould seat, the outer wall of the machine body is fixedly connected with protective plate, the outer wall of the protective plate is hinged with sealing door, the inner wall of the protective plate is fixedly connected with air inlet pipe, the end of the air inlet pipe is fixedly connected with one-way valve.In the utility model, by being provided with protective plate, sealing door, air inlet pipe and the structure such as etc., when hot melt operation, mould seat is included to form sealed cavity, exhaust gas in sealed cavity is flushed out, fresh air is supplemented to form convection to accelerate heat dissipation, avoid the risk that waste gas of hot melt is directly exposed in environment and lead to the risk that its internal particle and peculiar smell spread, improve the security of hot melt.

Description

Technical Field

[0001] This utility model relates to the field of hot melt molding, and in particular to a hot melt molding device for PP sheet plastics. Background Technology

[0002] PP sheet plastic is a sheet material made primarily of polypropylene. PP is a thermoplastic polymer and exhibits good resistance to most acids, alkalis, salts, oils, and organic solvents, making it resistant to corrosion. In many applications, such as the manufacture of large storage tanks, vessels, and pipelines, multiple PP sheets need to be spliced ​​and connected. Hot melt molding allows the edges of the PP sheets to melt and fuse together at high temperatures, forming a single unit that ensures the sealing and strength of the equipment.

[0003] A search revealed a Chinese patent publication number: CN221892428U, which discloses a PP sheet plastic hot melt molding device. By setting up a hot melt machine body with a protective window, the device protects the operator from being burned by the steam generated during hot melting and makes it easier for the operator to operate according to the internal conditions of the machine.

[0004] In the above technical solution, protective windows are set up to prevent the steam from the hot melt from burning the workers. However, high-temperature exhaust gas is generated during the hot melt process. The high-temperature exhaust gas contains impurities and odors. If it is blocked by the protective window and cannot be discharged in time, it will accumulate around the mold base. This will cause the plastic sheet to be affected by the high temperature, reducing the molding effect. At the same time, it will also cause the equipment to overheat, which is not conducive to production safety. Therefore, a PP sheet plastic hot melt molding device is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a PP sheet plastic hot melt molding device, which aims to improve the problem that the existing PP sheet plastic hot melt molding device cannot treat the waste gas in time during hot melting, and the heat accumulation or untimely waste gas treatment affects the molding effect and is detrimental to production safety.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a PP sheet plastic hot melt molding device, comprising a machine body, a bracket fixedly connected to the top of the machine body, a hydraulic cylinder fixedly connected to the top of the bracket, a hot melt plate fixedly connected to the output end of the hydraulic cylinder through a heat insulation plate, a mold seat provided on the surface of the machine body, a protective plate fixedly connected to the outer wall of the machine body, a sealing door hinged to the outer wall of the protective plate, an air inlet pipe fixedly connected to the inner wall of the protective plate, a one-way valve fixedly connected to the end of the air inlet pipe, an air outlet pipe fixedly connected to the inner wall of the protective plate, a processing box fixedly connected to the outer wall of the air outlet pipe, an installation frame provided inside the processing box, a filter plate fixedly connected to the inner wall of the installation frame, an activated carbon layer fixedly connected to the inner wall of the installation frame, an air pump fixedly connected to the top of the processing box, a connecting pipe fixedly connected to the output end of the air pump, a partition fixedly connected to the outer wall of the connecting pipe, and a water inlet pipe fixedly connected to the top of the processing box.

[0007] As a further description of the above technical solution: the outer wall of the processing box is fixedly connected to the back of the machine body, and the air outlet pipe passes through the top of the processing box.

[0008] As a further description of the above technical solution: the outer wall of the partition is fixedly connected to the inner wall of the processing box, the connecting pipe passes through the partition, and a valve is provided on the surface of the connecting pipe.

[0009] As a further description of the above technical solution: the water inlet pipe is located on the top of the treatment box on the side away from the air outlet pipe.

[0010] As a further description of the above technical solution: the activated carbon layer is located on the inner wall of the mounting bracket on the side away from the air outlet duct.

[0011] As a further description of the above technical solution: an arc-shaped groove is provided on the top of the body, a moving block is slidably connected to the inner wall of the arc-shaped groove, a blocking block is fixedly connected to the outer wall of the moving block, and an anti-slip convex ball is fixedly connected to the inner wall of the arc-shaped groove.

[0012] As a further description of the above technical solution: the top of the movable block is fixedly connected to the bottom of the sealing door, and the side of the blocking block near the air intake pipe is set at an angle.

[0013] As a further description of the above technical solution: the blocking block engages with the anti-slip convex ball.

[0014] The present invention has the following beneficial effects: 1. In the present invention, by setting a protective plate and a sealing door to form a sealed cavity in the mold base during hot melting operation, and with the cooperation of structures such as an air pump, air inlet pipe, processing box, filter plate, and activated carbon layer, the waste gas in the sealed cavity is flushed out, and fresh air is introduced to form convection to accelerate heat dissipation. At the same time, the waste gas is adsorbed and cooled, avoiding the risk of the waste gas from being directly exposed to the environment, which would lead to the spread of particles and odors inside, and improving the safety of hot melting.

[0015] 2. In this utility model, by combining structures such as arc grooves, moving blocks, anti-slip convex balls and blocking blocks, resistance is provided to the sealing door during the opening and closing process, and the resistance to opening is less than the resistance to closing, thus preventing the sealing door from closing accidentally and improving the efficiency of taking out the molded plastic. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the main structure of a PP sheet plastic hot melt molding device proposed in this utility model.

[0017] Figure 2 This is a top view schematic diagram of the main structure of a PP sheet plastic hot melt molding device proposed in this utility model.

[0018] Figure 3 This utility model proposes a PP sheet plastic hot melt molding device. Figure 2 Enlarged schematic diagram of region A in the middle.

[0019] Figure 4 This is a rear left view schematic diagram of the main structure of a PP sheet plastic hot melt molding device proposed in this utility model.

[0020] Figure 5 This is a right-rear view of the main structure of a PP sheet plastic hot melt molding device proposed in this utility model.

[0021] Legend: 1. Body; 2. Support; 3. Hydraulic cylinder; 4. Hot melt plate; 5. Mold base; 6. Protective plate; 7. Sealing door; 8. Air inlet pipe; 9. One-way valve; 10. Air outlet pipe; 11. Treatment box; 12. Mounting frame; 13. Filter plate; 14. Activated carbon layer; 15. Partition; 16. Air pump; 17. Connecting pipe; 18. Valve; 19. Water inlet pipe; 20. Arc groove; 21. Moving block; 22. Anti-slip convex ball; 23. Blocking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-3 This utility model provides an embodiment of a PP sheet plastic hot melt molding device, including a machine body 1. A bracket 2 is fixedly connected to the top of the machine body 1, and a hydraulic cylinder 3 is fixedly connected to the top of the bracket 2. The output end of the hydraulic cylinder 3 is fixedly connected to a hot melt plate 4 through a heat insulation plate. Two sets of positioning rods are arranged on the left and right sides of the top of the heat insulation plate and pass through the bracket 2 to ensure the stability of the device's lifting and lowering when the hydraulic cylinder 3 drives the hot melt plate 4 to rise and fall. A mold seat 5 is provided on the surface of the machine body 1. Plastic raw materials are placed in the mold seat 5 and hot melted by the hot melt plate 4 to form a mold shape. A protective plate 6 is fixedly connected to the outer wall of the machine body 1. The protective plate 6 is arranged in an inverted L shape and has two sets located on the left and right sides of the bracket 2. A sealing door 7 is hinged to the outer wall of the machine body 1. A viewing window is opened on the surface of the sealing door 7, and a sealing gasket is set on the inner side. The sealing door 7 cooperates with two sets of protective plates 6 to switch the area around the mold base 5 above the machine body 1 to a relatively sealed state, forming a sealed cavity. An air inlet pipe 8 is fixedly connected to the inner wall of the protective plate 6. A one-way valve 9 is fixedly connected to the end of the air inlet pipe 8. The one-way valve 9 controls the air inlet pipe 8 to only allow outside air to be introduced into the sealed cavity. The air inside the sealed cavity cannot be discharged from the air inlet pipe 8. An air outlet pipe 10 is fixedly connected to the inner wall of the protective plate 6. A processing box 11 is fixedly connected to the outer wall of the air outlet pipe 10. The air outlet pipe 10 passes through the top of the processing box 11. The outer wall of the processing box 11 is fixedly connected to the back of the machine body 1.

[0024] Reference Figures 4-5The treatment box 11 has an internal mounting frame 12. A slot is provided at the top of the treatment box 11, the size of which matches the outer wall of the mounting frame 12. The mounting frame 12 can pass through the slot and be inserted into the treatment box 11 to fix the filter plate 13 and activated carbon layer 14. The filter plate 13 is fixedly connected to the inner wall of the mounting frame 12. The filter plate 13 can intercept larger particles of dust and impurities in the exhaust gas, providing preliminary purification of the exhaust gas generated by thermal melting. The activated carbon layer 14 is fixedly connected to the inner wall of the mounting frame 12. The activated carbon layer 14 has strong adsorption properties and can adsorb some organic pollutants and odor substances in the exhaust gas, reducing the toxicity and odor intensity of the exhaust gas. The activated carbon layer 14 is located on the inner wall of the mounting frame 12 on the side away from the exhaust duct 10. The top of the treatment box 11 is fixedly connected to the air... Pump 16, the input end of the air pump 16 is connected to a pipe, the pipe runs through the inside of the treatment box 11, the output end of the air pump 16 is fixedly connected to a connecting pipe 17, the surface of the connecting pipe 17 is provided with a valve 18, the outer wall of the connecting pipe 17 is fixedly connected to a partition 15, there are two sets of partitions 15, which separate the mounting bracket 12 from the connecting pipe 17, the partition 15 located near the water inlet pipe 19 and the inner wall of the treatment box 11 form a water storage cavity, which can hold water, the connecting pipe 17 runs through the partition 15, the outer wall of the partition 15 is fixedly connected to the inner wall of the treatment box 11, the top of the treatment box 11 is fixedly connected to the water inlet pipe 19, the water inlet pipe 19 is located on the top of the treatment box 11 on the side away from the air outlet pipe 10, the water storage cavity of the treatment box 11 is provided with a drain pipe, which can discharge the water inside.

[0025] Reference Figure 3 The top of the body 1 is provided with an arc-shaped groove 20. A moving block 21 is slidably connected to the inner wall of the arc-shaped groove 20. The top of the moving block 21 is fixedly connected to the bottom of the sealing door 7. A blocking block 23 is fixedly connected to the outer wall of the moving block 21. The side of the blocking block 23 near the air intake pipe 8 is set with an inclined surface. An anti-slip convex ball 22 is fixedly connected to the inner wall of the arc-shaped groove 20. The blocking block 23 and the anti-slip convex ball 22 mesh. When the blocking block 23 with one inclined surface meshes with the anti-slip convex ball 22, the resistance of meshing is less than that on the side without an inclined surface. That is, the resistance of the moving block 21 moving when the sealing door 7 is opened is less than the resistance of the moving block 21 moving when the sealing door 7 is closed.

[0026] Working principle: When the sealing door 7 is opened, it rotates around the hinge point, simultaneously moving the moving block 21 inside the arc-shaped groove 20. Due to the meshing between the anti-slip convex ball 22 and the blocking block 23, the sealing door 7 can stop at any angle without automatically rebounding and closing. Plastic raw material is evenly spread inside the mold base 5, and a certain pulling force is applied to the sealing door 7 to close it. After the raw material is inside the sealing cavity, the hydraulic cylinder 3 drives the hot melt plate 4 to embed into the mold base 5 to hot melt the raw material. At this time, the air pump 16 is turned on simultaneously. The suction of the air pump 16 causes the exhaust gas generated by the hot melt to enter through the exhaust pipe 10. Inside the treatment chamber 11, the exhaust gas is filtered by the filter plate 13 and adsorbed by the activated carbon layer 14 before entering the water storage chamber to further remove solid suspended matter and some organic pollutants from the exhaust gas. At the same time, outside air enters the sealed chamber through the air inlet pipe 8, and fresh air from the air inlet pipe is continuously replenished in the sealed chamber. Meanwhile, the air pump 16 draws exhaust gas from the right rear side, creating air convection in the sealed chamber. The air carrying heat is drawn out and discharged to the treatment chamber 11, so that the heat in the sealed chamber can be continuously transferred and dissipated, thereby accelerating heat dissipation and reducing the impact of excessively high ambient temperature on the quality and precision of its hot melt molding.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PP sheet plastic hot melt molding device, comprising a body (1), a bracket (2) fixedly connected to the top of the body (1), a hydraulic cylinder (3) fixedly connected to the top of the bracket (2), a hot melt plate (4) fixedly connected to the output end of the hydraulic cylinder (3) through a heat insulation plate, and a mold seat (5) provided on the surface of the body (1), characterized in that: The outer wall of the body (1) is fixedly connected to a protective plate (6), and a sealing door (7) is hinged to the outer wall of the protective plate (6). An air inlet pipe (8) is fixedly connected to the inner wall of the protective plate (6), and a one-way valve (9) is fixedly connected to the end of the air inlet pipe (8). An air outlet pipe (10) is fixedly connected to the inner wall of the protective plate (6). A treatment box (11) is fixedly connected to the outer wall of the air outlet pipe (10). An installation frame (12) is provided inside the treatment box (11). A filter plate (13) is fixedly connected to the inner wall of the installation frame (12). An activated carbon layer (14) is fixedly connected to the inner wall of the installation frame (12). An air pump (16) is fixedly connected to the top of the treatment box (11). A connecting pipe (17) is fixedly connected to the output end of the air pump (16). A partition plate (15) is fixedly connected to the outer wall of the connecting pipe (17). A water inlet pipe (19) is fixedly connected to the top of the treatment box (11).

2. The PP sheet plastic hot melt molding device according to claim 1, characterized in that: The outer wall of the processing box (11) is fixedly connected to the back of the body (1), and the air outlet pipe (10) passes through the top of the processing box (11).

3. The PP sheet plastic hot melt molding device according to claim 1, characterized in that: The outer wall of the partition (15) is fixedly connected to the inner wall of the processing box (11), the connecting pipe (17) passes through the partition (15), and a valve (18) is provided on the surface of the connecting pipe (17).

4. The PP sheet plastic hot melt molding device according to claim 1, characterized in that: The water inlet pipe (19) is located on the top side of the treatment box (11) away from the air outlet pipe (10).

5. The PP sheet plastic hot melt molding device according to claim 1, characterized in that: The activated carbon layer (14) is located on the inner wall of the mounting bracket (12) on the side away from the air outlet pipe (10).

6. The PP sheet plastic hot melt molding device according to claim 1, characterized in that: The top of the body (1) is provided with an arc-shaped groove (20), the inner wall of the arc-shaped groove (20) is slidably connected with a moving block (21), the outer wall of the moving block (21) is fixedly connected with a blocking block (23), and the inner wall of the arc-shaped groove (20) is fixedly connected with an anti-slip convex ball (22).

7. The PP sheet plastic hot melt molding device according to claim 6, characterized in that: The top of the movable block (21) is fixedly connected to the bottom of the sealing door (7), and the blocking block (23) is set at an angle on the side near the air intake pipe (8).

8. The PP sheet plastic hot melt molding device according to claim 6, characterized in that: The blocking block (23) engages with the anti-slip convex ball (22).

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