A thermoforming thermal energy efficient recovery device and its usage method

Abstract

The present invention provides a hot forming thermal energy efficient recovery device and its usage method, relating to the technical field of hot forming. The hot forming thermal energy efficient recovery device and its usage method include a fixed mold and a movable mold which are vertically placed up and down. An active part is arranged on the upper side of the movable mold and is sealed by a sealing hose to avoid heat energy loss. The fixed mold and the movable mold for hot pressing the hot forming material are arranged inside a sealing box. The sealing box is communicated with a material box through a first connecting pipe and a second connecting pipe. While enabling the gases inside the sealing box and the material box to form a cycle, the sealing box and the material box on both sides can be independently sealed through a one-way valve and a gas circulation device, so that the heat generated during the hot forming of the material can be recovered. At the same time, the material inside the material box can be preheated to avoid uneven heating of the material caused by directly heating cold materials, thereby improving the quality of the processed products.

Description

Technical Field

[0001] The present invention relates to the technical field of thermoforming, and specifically to a thermoforming thermal energy efficient recovery device and its usage method. Background Art

[0002] A relatively special plastic processing method for processing thermoplastic sheets into various products. The sheet is clamped on a frame and heated to a softened state, and under the action of an external force, it is made to closely adhere to the surface of the mold to obtain a shape similar to the mold surface. The plastics used for thermoforming mainly include polystyrene, polyvinyl chloride, polyolefins (such as polyethylene, polypropylene), polyacrylate esters (such as polymethyl methacrylate), and celluloses (such as nitrocellulose, cellulose acetate, etc.), and are also used for engineering plastics (such as ABS resin, polycarbonate).

[0003] When thermoforming a thermoplastic sheet, a large amount of heat will dissipate into the air, resulting in an increase in the temperature of the working environment of the staff, and at the same time causing energy loss and increasing the production cost of products. Therefore, there is an urgent need for a thermoforming thermal energy efficient recovery device. Summary of the Invention

[0004] The purpose of the present invention is to provide a thermoforming thermal energy efficient recovery device and its usage method, aiming to solve the problems in the prior art that when thermoforming a thermoplastic sheet, a large amount of heat will dissipate into the air, resulting in an increase in the temperature of the working environment of the staff, and at the same time causing energy loss and increasing the production cost of products.

[0005] To achieve the above purpose, the present invention adopts the following technical scheme: A thermoforming thermal energy efficient recovery device includes a fixed mold and a movable mold placed vertically up and down. An activity part is provided on the upper side of the movable mold and is sealed through a sealing hose to avoid heat energy loss. The fixed mold and the movable mold are arranged inside a sealing box and are simultaneously communicated with the inside of a material box through a first connecting pipe and a second connecting pipe;

[0006] A gas circulation device is arranged in the middle of the first connecting pipe;

[0007] A one-way valve is arranged in the middle of the second connecting pipe.

[0008] Further, a further technical scheme of the present invention is that one side of the sealing box is fixedly connected to the first connecting pipe through a flange, one end of the first connecting pipe is fixedly connected to the material box through a flange, and second through holes and first through holes are respectively opened on the opposite sides of the material box and the sealing box.

[0009] Further, a further technical scheme of the present invention is that there are two groups of symmetrically distributed second through holes and first through holes, and both the first connecting pipe and the second connecting pipe are communicated with the inside of the material box and the sealing box.

[0010] Further, a further technical solution of the present invention is that a one-way valve is fixedly connected to the middle of the first connecting pipe, and the one-way valve is an electromagnetic valve.

[0011] Further, a further technical solution of the present invention is that the lower end of one side of the material box is fixedly connected to a second connecting pipe through a flange. A gas circulation device is fixedly connected to the middle of the second connecting pipe. One end of the second connecting pipe is fixedly connected to the lower end of one side of the sealing box through a flange. A movable door is slidably connected to one side of the sealing box.

[0012] Further, a further technical solution of the present invention is that a fixed mold is fixedly connected to the bottom of the inner surface of the sealing box. A connecting plate is fixedly connected to the upper end of the fixed mold through bolts. One end of the connecting plate is fixedly connected to a movable part. One end of the movable part is fixedly connected to a support frame through the sealing box. A sealing hose is sleeved on the outside of the output end of the movable part. Both ends of the sealing hose are fixedly connected to the upper side of the connecting plate and the upper side of the inner surface of the sealing box through bolts respectively.

[0013] Further, a further technical solution of the present invention is that limiting plates are fixedly connected to both sides of the inner surface of the material box. Limiting rollers are slidably connected to the inner surfaces of the limiting plates. One end of the limiting roller is fixedly connected to a material rack. Support wheels are fixedly connected to both sides of the middle of the material rack.

[0014] Further, a further technical solution of the present invention is that a connecting block is fixedly connected to the lower surface of the material rack. A positioning shaft is fixedly connected to one end of the connecting block. A connecting plate is fixedly connected to the middle of the positioning shaft. The positioning shaft is a torsion spring shaft. One end of the connecting plate is fixedly connected to a movable wheel through a connecting shaft.

[0015] Further, a further technical solution of the present invention is that a rolling door is fixedly connected to the lower end of one side of the material box.

[0016] Heat the fixed mold and the movable mold for processing the thermoforming material, control the rolling door to descend to open the opening end of the material box, enable the staff to take out the thermoforming sheet from the inside of the material box, then close the material box by raising the rolling door, open the movable door on one side of the sealing box, place the taken thermoforming sheet between the fixed mold and the movable mold, and close the movable door. At this time, the gas circulation device and the one-way valve are started to generate a temperature inside the sealing box, and the materials inside the material box are preheated with the flow of the gas.

[0017] The beneficial effects of the present invention are:

[0018] The fixed mold and the movable mold for hot pressing the thermoformed material are arranged inside the sealed box. The sealed box is communicated with the material box through the first connecting pipe and the second connecting pipe, so that the gases inside the sealed box and the material box form a cycle. At the same time, the sealed box and the material box on both sides can be independently sealed through the one-way valve and the gas circulation device, and the heat generated during the thermoforming of the material can be recovered. At the same time, the material inside the material box can be preheated to avoid uneven heating of the material caused by directly heating the cold material, and the quality of the processed product can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the three-dimensional front view structural schematic diagram of the present invention;

[0020] Figure 2 is the three-dimensional sectional view structural schematic diagram of the sealed box of the present invention;

[0021] Figure 3 is the partial front view structural schematic diagram of the material box of the present invention;

[0022] Figure 4 is the partial three-dimensional sectional view structural schematic diagram of the present invention;

[0023] Figure 5 is the Figure 4 enlarged structural schematic diagram of part A of the present invention.

[0024] In the figure: 1. Sealed box; 101. First through hole; 2. Movable door; 3. Movable part; 4. One-way valve; 5. First connecting pipe; 6. Rolling shutter door; 7. Material box; 701. Second through hole; 8. Second connecting pipe; 9. Gas circulation device; 11. Connecting disc; 12. Fixed mold; 13. Movable mold; 14. Sealed hose; 15. Material rack; 16. Limiting plate; 17. Limiting roller; 18. Supporting wheel; 20. Positioning shaft; 21. Connecting block; 22. Connecting plate; 23. Movable wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings.

[0026] As Figures 1-5 shown, a thermoforming heat energy efficient recovery device includes a fixed mold 12 and a movable mold 13 which are vertically placed up and down. A movable part 3 is arranged on the upper side of the movable mold 13 and is sealed through a sealed hose 14 to avoid heat energy loss. The fixed mold 12 and the movable mold 13 are arranged inside the sealed box 1 and are communicated with the inside of the material box 7 through the first connecting pipe 5 and the second connecting pipe 8 at the same time, so that the hot air inside the sealed box 1 flows into the inside of the material box 7 to heat the material inside the material box 7;

[0027] A gas circulation device 9 is provided in the middle of the first connecting pipe 5, and the gas inside the sealing box 1 and the material box 7 is made to flow through the gas circulation device 9;

[0028] A one-way valve 4 is provided in the middle of the second connecting pipe 8, and the on-off of the first connecting pipe 5 is controlled through the one-way valve 4 to further reduce the loss of heat energy.

[0029] In this specific embodiment, the fixed mold 12 and the movable mold 13 for hot pressing the thermoformed material are arranged inside the sealing box 1. The sealing box 1 is communicated with the material box 7 through the first connecting pipe 5 and the second connecting pipe 8. While the gas inside the sealing box 1 and the material box 7 forms a cycle, the sealing box 1 and the material box 7 on both sides can be independently sealed through the one-way valve 4 and the gas circulation device 9. The heat generated during the thermoforming of the material can be recovered. At the same time, the material inside the material box 7 can be preheated to avoid uneven heating of the material caused by directly heating the cold material, and the quality of the processed product is improved.

[0030] In another specific embodiment of the present invention, one side of the sealing box 1 is fixedly connected to the first connecting pipe 5 through a flange. One end of the first connecting pipe 5 is fixedly connected to the material box 7 through a flange. Second through holes 701 and first through holes 101 are respectively formed on the opposite sides of the material box 7 and the sealing box 1, so that the interiors of the material box 7 and the sealing box 1 are communicated.

[0031] Specifically, there are two groups of symmetrically distributed second through holes 701 and first through holes 101, so that both the first connecting pipe 5 and the second connecting pipe 8 are communicated with the interiors of the material box 7 and the sealing box 1, and the gas inside the material box 7 and the sealing box 1 forms a cycle.

[0032] Specifically, a one-way valve 4 is fixedly connected to the middle of the first connecting pipe 5. The one-way valve 4 is an electromagnetic valve, and the on-off of the first connecting pipe 5 can be accurately controlled through the one-way valve 4 to realize the on-off between the material box 7 and the sealing box 1.

[0033] Specifically, one side of the lower end of the material box 7 is fixedly connected to the second connecting pipe 8 through a flange. A gas circulation device 9 is fixedly connected to the middle of the second connecting pipe 8. The gas circulation device 9 is a blower. The blower makes the gas inside the material box 7 and the sealing box 1 circulate and flow to avoid the loss of heat. One end of the second connecting pipe 8 is fixedly connected to the lower end of one side of the sealing box 1 through a flange. A movable door 2 is slidably connected to one side of the sealing box 1. By the symmetrically moving movable door 2, the space occupied by the movable door 2 is reduced, and the efficiency of taking and placing materials is improved.

[0034] Specifically, a fixed mold 12 is fixedly connected to the bottom of the inner surface of the sealed box 1. The upper end of the fixed mold 12 is fixedly connected to a connection plate 11 by bolts. One end of the connection plate 11 is fixedly connected to a movable part 3. The movable part 3 is a hydraulic push rod. One end of the movable part 3 is fixedly connected to a support frame through the sealed box 1. The support frame fixes the movable part 3 to ensure that the center lines of the fixed mold 12 and the movable mold 13 coincide. A sealing hose 14 is sleeved on the outside of the output end of the movable part 3. The two ends of the sealing hose 14 are respectively fixedly connected to the upper side of the connection plate 11 and the upper side of the inner surface of the sealed box 1 by bolts. The sealing hose 14 seals the connection between the movable part 3 and the sealed box 1 to avoid heat loss.

[0035] Specifically, limiting plates 16 are fixedly connected to both sides of the inner surface of the material box 7. Limiting rollers 17 are slidably connected to the inner surfaces of the limiting plates 16. One end of each limiting roller 17 is fixedly connected to a material rack 15. The material rack 15 is used to place and support materials. Support wheels 18 are fixedly connected to both sides of the middle of the material rack 15. The outside of the support wheels 18 is in rolling connection with the upper surface of the limiting plates 16 to support the material rack 15 and keep the material rack 15 stable.

[0036] Specifically, a connection block 21 is fixedly connected to the lower surface of the material rack 15. One end of the connection block 21 is fixedly connected to a positioning shaft 20. A connecting plate 22 is fixedly connected to the middle of the positioning shaft 20. The positioning shaft 20 is a torsion spring shaft, which can cause the connecting plate 22 to flip when it is not stored inside the material box 7, be perpendicular to the lower surface of the material rack 15, and support the material rack 15. One end of the connecting plate 22 is fixedly connected to a movable wheel 23 through a connecting shaft. The friction coefficient between devices is reduced through the movable wheel 23 to facilitate the movement of the material rack 15.

[0037] Specifically, a rolling shutter door 6 is fixedly connected to the lower end of one side of the material box 7. The output end of the rolling shutter door 6 is slidably connected through a limiting groove to open and close the material box 7, facilitating the taking of materials inside the material box 7. At the same time, the rolling shutter door 6 is opened from top to bottom in sequence, reducing the time for gas exchange between the inside and outside of the material box 7 and further avoiding heat loss.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hot forming thermal energy efficient recovery device, characterized in that: It includes a fixed mold (12) and a movable mold (13) placed vertically up and down. An active part (3) is provided on the upper side of the movable mold (13) and is sealed by a sealing hose (14) to avoid heat loss. The fixed mold (12) and the movable mold (13) are arranged inside a sealing box (1). At the same time, the sealing box (1) is communicated with the inside of a material box (7) through a first connecting pipe (5) and a second connecting pipe (8); A check valve (4) is arranged in the middle of the first connecting pipe (5); A gas circulation device (9) is arranged in the middle of the second connecting pipe (8); One side of the sealing box (1) is fixedly connected with a first connecting pipe (5) through a flange. One end of the first connecting pipe (5) is fixedly connected with a material box (7) through a flange. Second through holes (701) and first through holes (101) are respectively formed on the opposite sides of the material box (7) and the sealing box (1); Limit plates (16) are fixedly connected to both sides of the inner surface of the material box (7). Limit rollers (17) are slidably connected to the inner surfaces of the limit plates (16). One end of the limit roller (17) is fixedly connected with a material rack (15). Support wheels (18) are fixedly connected to both sides of the middle of the material rack (15); A connecting block (21) is fixedly connected to the lower surface of the material rack (15). One end of the connecting block (21) is fixedly connected with a positioning shaft (20). A connecting plate (22) is fixedly connected to the middle of the positioning shaft (20). The positioning shaft (20) is a torsion spring shaft. One end of the connecting plate (22) is fixedly connected with a movable wheel (23) through a connecting shaft; A rolling door (6) is fixedly connected to the lower end of one side of the material box (7).

2. The high-efficiency heat recovery device for thermoforming according to claim 1, characterized in that, There are two groups of symmetrically distributed second through holes (701) and first through holes (101). The first connecting pipe (5) and the second connecting pipe (8) are both communicated with the inside of the material box (7) and the sealing box (1).

3. The thermoforming thermal energy highly efficient recovery device according to claim 2, wherein, A check valve (4) is fixedly connected to the middle of the first connecting pipe (5). The check valve (4) is an electromagnetic valve.

4. The thermoforming thermal energy efficient recovery device according to claim 2, wherein, One side of the lower end of the material box (7) is fixedly connected with a second connecting pipe (8) through a flange. A gas circulation device (9) is fixedly connected to the middle of the second connecting pipe (8). One end of the second connecting pipe (8) is fixedly connected with the lower end of one side of the sealing box (1) through a flange. A movable door (2) is slidably connected to one side of the sealing box (1).

5. The high-efficiency heat energy recovery device for thermoforming according to claim 4, wherein The fixed mold (12) is fixedly connected to the bottom of the inner surface of the sealing box (1). A connecting disk (11) is fixedly connected to the upper end of the fixed mold (12) through bolts. One end of the connecting disk (11) is fixedly connected with an active part (3). One end of the active part (3) is fixedly connected with a support frame through the sealing box (1). A sealing hose (14) is sleeved on the outside of the output end of the active part (3). Both ends of the sealing hose (14) are respectively fixedly connected with the upper side of the connecting disk (11) and the upper side of the inner surface of the sealing box (1) through bolts.

6. A method for using the hot forming thermal energy efficient recovery device according to any one of claims 1 to 5, characterized in that, Heat the fixed mold (12) and the movable mold (13) for processing thermoformed materials, control the rolling shutter door (6) to descend, open the open end of the material box (7), enable the staff to take out the thermoformed sheet from the inside of the material box (7), then close the material box (7) by raising the rolling shutter door (6), open the movable door (2) on one side of the sealed box (1), place the taken thermoformed sheet between the fixed mold (12) and the movable mold (13), and close the movable door (2). At this time, the gas circulation device (9) and the one-way valve (4) are started to generate a temperature inside the sealed box (1), and the materials inside the material box (7) are preheated as the gas flows.

Images