Automatic blister forming production line and process for blister trays

Abstract

The invention discloses an automatic blister forming production line and process for blister trays, and relates to the technical field of blister tray processing. The device comprises a workbench, a conveying mechanism is arranged above the workbench, a forming mechanism is fixedly arranged on the top face of the conveying mechanism, the forming mechanism comprises a first supporting frame, the first supporting frame is fixedly arranged on the bottom face of the workbench, and a first connecting plate is slidably arranged in the first supporting frame; a first connecting rod is fixedly arranged on the top face of the first connecting plate, a mold body is fixedly arranged at the top end of the first connecting rod, a second supporting frame is fixedly arranged on the top face of the conveying mechanism, the mold body and the transverse plate are close to each other, then a pressing plate is attached to the top face of a raw material, and the raw material is pressed; therefore, the raw materials can be completely attached to the top face of the mold body, gaps between the mold body and the raw materials are avoided, the raw materials can be completely adsorbed into the mold body during adsorption, and the machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blister tray processing, and specifically relates to an automatic blister forming production line and process for blister trays. Background Art

[0002] A blister tray, also known as a plastic inner tray, is made of plastic sheet into a plastic with specific grooves by the blister process. The product is placed in the groove to protect and beautify the product. There is also a transport-type tray packaging, and most trays are used for convenience.

[0003] After heating the raw material, it is necessary to move the raw material above the mold, make the raw material fit the mold, and then adsorb the raw material on the surface of the mold by the suction of the mold to obtain the required shape. However, when the existing blister trays are processed and formed, just by the contact between the raw material and the mold, the raw material cannot be completely attached to the surface of the mold, resulting in the raw material not being adsorbed into the mold during adsorption, thereby reducing the processing efficiency. In view of the above problems, the inventor proposes an automatic blister forming production line and process for blister trays to solve the above problems. Summary of the Invention

[0004] In order to solve the problem that when blister trays are processed and formed, just by the contact between the raw material and the mold, the raw material cannot be completely attached to the surface of the mold, resulting in the raw material not being adsorbed into the mold; the purpose of the present invention is to provide an automatic blister forming production line and process for blister trays.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: An automatic thermoforming production line for thermoformed trays includes a workbench. Above the workbench, there is a conveying mechanism. On the top surface of the conveying mechanism, a forming mechanism is fixedly arranged. The forming mechanism includes a first support frame. The first support frame is fixedly arranged on the bottom surface of the workbench. A first connecting plate is slidably arranged inside the first support frame. On the top surface of the first connecting plate, a first connecting rod is fixedly arranged. At the top end of the first connecting rod, a mold body is fixedly arranged. On the top surface of the conveying mechanism, a second support frame is fixedly arranged. A second connecting plate is slidably arranged inside the second support frame. On the bottom surface of the second connecting plate, a second connecting rod is fixedly arranged. At the bottom surface of the second connecting rod, a cross plate is fixedly arranged. On the bottom surface of the cross plate, a pressing plate is fixedly arranged. On one side of the conveying mechanism, a housing is fixedly arranged. Inside the housing, a second motor is installed. At the output end of the second motor, a toothed ring is fixedly arranged. On one side of the first connecting plate and the second connecting plate, a toothed plate is fixedly arranged. The toothed ring meshes with the toothed plate. On the bottom surface of the workbench, a vacuum pump body is installed. On one side of the vacuum pump body, a telescopic hose is fixedly arranged. On the outer surface of a fixed pipe fixedly arranged at the bottom end of the mold body, a suction pipe is fixedly arranged. The suction pipe is fixedly inserted into the mold body. The telescopic hose is fixedly inserted into the fixed pipe. First, wind the raw material around the surface of the unwinding roller. Then, pass one end of the raw material under the limiting roller and place it on the surface of the chain. At the same time, under the action of the spring, make the movable block slide on the outer surface of the movable rod. At the same time, the second limiting rod contacts the top surface of the raw material and makes the second limiting rod rotate on one side of the movable block. Then, turn on the first motor, so that the rotating shaft rotates. The rotating shaft drives the driving sprocket to rotate. The driving sprocket and the driven sprocket are connected by a chain drive, so that the rotating shaft and the rotating rod rotate synchronously, thereby facilitating the conveying of the raw material. When it is conveyed below the heating mechanism, by turning on the fan, the external air is conveyed into the fixed frame. Then, turn on the electric heating tube, and then it is possible to heat-treat the air in the fixed frame. Then, pressure is generated in the fixed frame, and the hot air is conveyed from the connecting pipe into the shunt pipe and blown onto the surface of the raw material from the air outlet, thereby being able to heat-treat the raw material;

[0006] When it is then conveyed to the middle of the forming mechanism, by starting the second motor, the toothed ring rotates, the toothed ring meshes with the toothed plate for transmission, and then the toothed plate on the top surface of the first connecting plate drives the first connecting plate to rise. Then, the first connecting rod drives the mold body to rise and fit against the bottom surface of the raw material. At the same time, the toothed plate on the bottom surface of the second connecting plate drives the second connecting plate to descend, and then the second connecting rod drives the cross plate to descend, so that the pressing plate fits against the top surface of the raw material and presses the raw material, so that the raw material can completely fit against the top surface of the mold body, avoiding the generation of gaps between the mold body and the raw material. Then, when adsorbing, the raw material can be completely adsorbed into the mold body. Then, start the vacuum pump body, so that the telescopic hose sucks air, and then the straw extracts the air in the mold body, prompting the raw material to be heat - formed in the mold body, and then it can be heat - formed. Then, start the second motor again to reverse the toothed ring, so that the mold body and the cross plate move away from each other. Then, convey the raw material, start the cold air blower, so that the cold air is ejected from the cold air pipe, and then the formed plastic - suction tray can be cooled for subsequent cutting treatment. Then, start the second motor again to make the mold body and the cross plate approach each other, and then heat - form the raw material again. At the same time, the output end of the second motor drives the first bevel gear to rotate, the first bevel gear meshes with the second bevel gear for transmission. Then, when the guide rod rotates in the positioning frame, the guide rod drives the fourth bevel gear to rotate, the fourth bevel gear meshes with the third bevel gear for transmission, and then the threaded rod rotates, prompting the moving rod to drive the mounting plate to descend. At this time, the plastic - suction tray is located above the positioning plate, and then the annular cutting knife cuts around the formed raw material, and then the excess material edge can be removed, ensuring the accuracy and aesthetics of the shape of the plastic - suction tray.

[0007] Preferably, a cutting mechanism is fixedly arranged on the top surface of the conveying mechanism. The cutting mechanism includes a mounting frame. An installation plate is slidably arranged in the mounting frame. An annular cutting knife is installed on the bottom surface of the installation plate. Positioning frames are fixedly arranged on both sides of the mounting frame. A threaded rod is rotatably arranged in the positioning frame. A moving rod is thread - sleeved on the outer surface of the threaded rod. One end of the moving rod is fixedly arranged on the top surface of the installation plate. A guide rod is rotatably arranged in the positioning frame. A fourth bevel gear is fixedly arranged at one end of the guide rod. A third bevel gear is fixedly arranged at the bottom surface of the threaded rod, and the third bevel gear meshes with the fourth bevel gear. The other end of the guide rod is rotatably arranged in the shell body. A second bevel gear is fixedly arranged at the end of the guide rod away from the fourth bevel gear. A first bevel gear is fixedly arranged at the output end of the second motor, and the first bevel gear meshes with the second bevel gear.

[0008] Preferably, a heating mechanism is installed on the top surface of the conveying mechanism. The heating mechanism includes a fixed frame. A fan is fixedly arranged in the fixed frame. An electric heating tube is installed in the fixed frame. A shunt pipe is fixedly arranged in the fixed frame. A connecting pipe is fixedly arranged on the outer surface of the shunt pipe. The connecting pipe is fixedly inserted into the fixed frame. An air outlet is fixedly arranged in the shunt pipe.

[0009] The transmission gear of the present invention is a gear which is fixedly mounted on the support frame, and the gear is connected with the gear train by the gear train of the first motor, and the gear train is connected with the gear train by the gear train of the second motor.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The mold body and the horizontal plate are brought close to each other, and then the pressing plate fits the top surface of the raw material and presses the raw material, so that the raw material can be completely fitted on the top surface of the mold body, avoiding the gap between the mold body and the raw material. Then, during adsorption, the raw material can be completely adsorbed into the mold body, thereby improving the processing efficiency;

[0012] 2. The annular cutter is driven down by the mounting plate. At this time, the blister tray is located above the positioning plate, so that the annular cutter cuts around the formed raw material, thereby removing excess material edges and ensuring the accuracy and aesthetics of the shape of the blister tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the workbench of the present invention;

[0016] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a support plate of the present invention;

[0017] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a fixing frame of the present invention;

[0018] Figure 5 Schematic diagram of partial sectional view of the first support frame of the present invention;

[0019] Figure 6 Schematic diagram of partial sectional view of the mold body of the present invention;

[0020] Figure 7 Schematic diagram of the cross - plate structure of the present invention;

[0021] Figure 8 Schematic diagram of partial sectional view of the installation frame of the present invention;

[0022] Figure 9 For the present invention Figure 3 Schematic diagram of enlarged structure at position A;

[0023] Figure 10 For the present invention Figure 5 Schematic diagram of enlarged structure at position A.

[0024] In the figure: 1, workbench; 2, conveying mechanism; 3, heating mechanism; 4, forming mechanism; 5, cutting mechanism; 101, fixed ear; 102, unwinding roller; 103, ear plate; 104, limiting roller; 201, support plate; 202, first motor; 203, rotating shaft; 204, driving sprocket; 205, rotating rod; 206, driven sprocket; 207, chain; 208, first limiting rod; 209, limiting groove; 210, movable rod; 211, movable block; 212, spring; 213, second limiting rod; 214, air cooler; 301, fixed frame; 302, fan; 303, electric heating tube; 304, shunt pipe; 305, connecting pipe; 306, air outlet; 401, first support frame; 402, first connecting plate; 403, first connecting rod; 404, mold body; 405, second support frame; 406, second connecting plate; 407, second connecting rod; 408, cross - plate; 409, fixed pipe; 410, suction pipe; 411, vacuum pump body; 412, telescopic hose; 413, housing; 414, second motor; 415, toothed ring; 416, first bevel gear; 417, toothed plate; 418, guide rod; 419, second bevel gear; 420, pressing plate; 501, installation frame; 502, installation plate; 503, annular cutter; 504, moving rod; 505, positioning frame; 506, threaded rod; 507, third bevel gear; 508, fourth bevel gear. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment: As Figures 1-10 shown, the present invention provides an automatic thermoforming production line for thermoformed trays, including a workbench 1. Above the workbench 1, there is a conveying mechanism 2. On the top surface of the conveying mechanism 2, a forming mechanism 4 is fixedly arranged. The forming mechanism 4 includes a first support frame 401, and the first support frame 401 is fixedly arranged on the bottom surface of the workbench 1. A first connecting plate 402 is slidably arranged in the first support frame 401. On the top surface of the first connecting plate 402, a first connecting rod 403 is fixedly arranged. At the top end of the first connecting rod 403, a mold body 404 is fixedly arranged. On the top surface of the conveying mechanism 2, a second support frame 405 is fixedly arranged. A second connecting plate 406 is slidably arranged in the second support frame 405. On the bottom surface of the second connecting plate 406, a second connecting rod 407 is fixedly arranged. At the bottom surface of the second connecting rod 407, a cross plate 408 is fixedly arranged. On the bottom surface of the cross plate 408, a pressing plate 420 is fixedly arranged. On one side of the conveying mechanism 2, a housing 413 is fixedly arranged. A second motor 414 is installed in the housing 413. At the output end of the second motor 414, a toothed ring 415 is fixedly arranged. On one side of the first connecting plate 402 and the second connecting plate 406, a toothed plate 417 is fixedly arranged. The toothed ring 415 meshes with the toothed plate 417. On the bottom surface of the workbench 1, a vacuum pump body 411 is installed. On one side of the vacuum pump body 411, a telescopic hose 412 is fixedly arranged. On the outer surface of a fixed pipe 409 fixedly arranged at the bottom end of the mold body 404, a suction pipe 410 is fixedly arranged. The suction pipe 410 is fixedly inserted into the mold body 404. The telescopic hose 412 is fixedly inserted into the fixed pipe 409. By starting the second motor 414, the toothed ring 415 rotates. The toothed ring 415 and the toothed plate 417 are in meshing transmission. Then, the toothed plate 417 on the top surface of the first connecting plate 402 drives the first connecting plate 402 to rise. Then, the first connecting rod 403 drives the mold body 404 to rise and fit against the bottom surface of the raw material. At the same time, the toothed plate 417 on the bottom surface of the second connecting plate 406 drives the second connecting plate 406 to descend. Then, the second connecting rod 407 drives the cross plate 408 to descend, so that the pressing plate 420 fits against the top surface of the raw material and presses the raw material, so that the raw material can completely fit against the top surface of the mold body 404, avoiding the generation of gaps between the mold body 404 and the raw material. Then, during adsorption, the raw material can be completely adsorbed into the mold body 404, improving the processing efficiency. By starting the vacuum pump body 411, the telescopic hose 412 sucks air. Then, the suction pipe 410 extracts the air in the mold body 404, prompting the raw material to be thermoformed in the mold body 404, and then it can be thermoformed.

[0027] A cutting mechanism 5 is fixedly arranged on the top surface of the conveying mechanism 2. The cutting mechanism 5 includes a mounting frame 501. An installation plate 502 is slidably arranged in the mounting frame 501. An annular cutting tool 503 is installed on the bottom surface of the installation plate 502. Positioning frames 505 are fixedly arranged on both sides of the mounting frame 501. A threaded rod 506 is rotatably arranged in the positioning frame 505. A moving rod 504 is threadedly sleeved on the outer surface of the threaded rod 506. One end of the moving rod 504 is fixedly arranged on the top surface of the installation plate 502. A guide rod 418 is rotatably arranged in the positioning frame 505. A fourth bevel gear 508 is fixedly arranged at one end of the guide rod 418. A third bevel gear 507 is fixedly arranged on the bottom surface of the threaded rod 506, and the third bevel gear 507 meshes with the fourth bevel gear 508. The other end of the guide rod 418 is rotatably arranged in the housing 413. A second bevel gear 419 is fixedly arranged at the end of the guide rod 418 away from the fourth bevel gear 508. A first bevel gear 416 is fixedly arranged at the output end of the second motor 414, and the first bevel gear 416 meshes with the second bevel gear 419.

[0028] By adopting the above technical solution, a positioning plate is fixedly arranged between the support plates 201. The positioning plate is located below the installation plate 502. When adsorbing the raw material, by starting the second motor 414, the mold body 404 and the cross plate 408 are urged to approach each other. At the same time, the output end of the second motor 414 drives the first bevel gear 416 to rotate. The first bevel gear 416 meshes and drives the second bevel gear 419. Furthermore, when the guide rod 418 rotates in the positioning frame 505, the guide rod 418 drives the fourth bevel gear 508 to rotate. The fourth bevel gear 508 meshes and drives the third bevel gear 507. Then the threaded rod 506 rotates, causing the moving rod 504 to drive the installation plate 502 to descend. At this time, the plastic suction tray is located above the positioning plate. Then the annular cutting tool 503 cuts the periphery of the formed raw material, and then the excess material edge can be removed, ensuring the accuracy and aesthetics of the shape of the plastic suction tray.

[0029] A heating mechanism 3 is installed on the top surface of the conveying mechanism 2. The heating mechanism 3 includes a fixed frame 301. A fan 302 is fixedly arranged in the fixed frame 301. An electric heating tube 303 is installed in the fixed frame 301. A shunt pipe 304 is fixedly arranged in the fixed frame 301. A connecting pipe 305 is fixedly arranged on the outer surface of the shunt pipe 304. The connecting pipe 305 is fixedly inserted into the fixed frame 301. An air outlet 306 is fixedly arranged in the shunt pipe 304.

[0030] By adopting the above technical solution, the fan 302 is turned on to transport the external air into the fixed frame 301, and then the electric heating tube 303 is turned on (the electric heating tube 303 is provided with a heating wire) to heat the air in the fixed frame 301. Then, pressure is generated in the fixed frame 301, and the hot air is transported from the connecting tube 305 to the diverter tube 304 and blown onto the surface of the raw material from the air outlet 306, so that the raw material can be heated.

[0031] The conveying mechanism 2 includes a support plate 201, a cooling fan 214 is fixedly provided on the top surface of the support plate 201, a first motor 202 is installed on one side of the support plate 201, a rotating shaft 203 is fixedly provided on the output end of the first motor 202, a rotating rod 205 is rotatably connected in the support plate 201, a driving sprocket 204 is fixedly provided on the outer surface of the rotating shaft 203, a driven sprocket 206 is fixedly provided on the outer surface of the rotating rod 205, a chain 207 is transmission-connected between the driving sprocket 204 and the driven sprocket 206, and a first limiter is rotatably connected in the support plate 201. Rod 208, a limiting groove 209 is provided in the support plate 201, a movable rod 210 is fixedly provided in the limiting groove 209, a movable block 211 is slidingly sleeved on the outer surface of the movable rod 210, a spring 212 is fixedly connected between the limiting groove 209 and the movable block 211, a second limiting rod 213 is rotatably connected to one side of the movable block 211, a fixed ear 101 is fixedly provided on the top surface of the workbench 1, a reeling roller 102 is rotatably connected in the fixed ear 101, an ear plate 103 is fixedly provided on the top surface of the workbench 1, and a limiting roller 104 is rotatably connected between the ear plates 103.

[0032] By adopting the above technical scheme, the raw material is wound on the surface of the unwinding roller 102, and then one end of the raw material passes through the bottom of the limiting roller 104 and is placed on the surface of the chain 207. At the same time, under the action of the spring 212, the movable block 211 slides on the outer surface of the movable rod 210. At the same time, the second limiting rod 213 contacts the top surface of the raw material and rotates on one side of the movable block 211, so that the raw material is clamped and limited when conveying the raw material; by turning on the first motor 202, the rotating shaft 203 is rotated, and the rotating shaft 203 drives the active sprocket 204 to rotate. The active sprocket 204 and the driven sprocket 206 are connected by the chain 207 transmission, so that the rotating shaft 203 and the rotating rod 205 rotate synchronously, thereby facilitating the conveying of the raw material; a cold air duct is provided on the bottom surface of the cold air fan 214, and by turning on the cold air fan 214, cold air is ejected from the cold air duct, so that the formed blister tray can be cooled for subsequent cutting.

[0033] Working principle: First, the raw material is wound on the surface of the unwinding roller 102, and then one end of the raw material passes through the bottom of the limiting roller 104 and is placed on the surface of the chain 207. At the same time, under the action of the spring 212, the movable block 211 slides on the outer surface of the movable rod 210. At the same time, the second limiting rod 213 contacts the top surface of the raw material and rotates on one side of the movable block 211. Then, the first motor 202 is turned on to rotate the rotating shaft 203, and the rotating shaft 203 drives the active sprocket 204 to rotate. The active sprocket 204 and the driven sprocket 204 are rotated. 06 is connected by a chain 207 transmission, so that the rotating shaft 203 and the rotating rod 205 rotate synchronously, so as to facilitate the transportation of the raw materials. After being transported to the bottom of the heating mechanism 3, the fan 302 is turned on to transport the external air into the fixed frame 301, and then the electric heating pipe 303 is turned on to heat the air in the fixed frame 301. Then, pressure is generated in the fixed frame 301, and the hot air is transported from the connecting pipe 305 to the shunt pipe 304, and blown to the surface of the raw materials from the air outlet 306, so as to heat the raw materials;

[0034] When it is then conveyed to the middle of the forming mechanism 4, by starting the second motor 414, the toothed ring 415 is rotated. The toothed ring 415 is in meshing transmission with the toothed plate 417, so that the toothed plate 417 on the top surface of the first connecting plate 402 drives the first connecting plate 402 to rise. Then, the first connecting rod 403 drives the mold body 404 to rise and fit against the bottom surface of the raw material. At the same time, the toothed plate 417 on the bottom surface of the second connecting plate 406 drives the second connecting plate 406 to descend. Then, the second connecting rod 407 drives the cross plate 408 to descend, so that the pressing plate 420 fits against the top surface of the raw material and presses the raw material, so that the raw material can completely fit against the top surface of the mold body 404, avoiding the generation of a gap between the mold body 404 and the raw material. Thus, when adsorbing, the raw material can be completely adsorbed into the mold body 404. Then, the vacuum pump body 411 is started, so that the telescopic hose 412 sucks air, and then the suction pipe 410 extracts the air in the mold body 404, prompting the raw material to be heat-sealed in the mold body 404, and then it can be heat-sealed and formed. Then, the second motor 414 is started again to reverse the toothed ring 415, so that the mold body 404 and the cross plate 408 move away from each other. Then, the raw material is conveyed, and the cold air blower 214 is started, so that cold air is ejected from the cold air pipe, and then the formed heat-sealed tray can be cooled for subsequent cutting treatment. Then, the second motor 414 is started again to make the mold body 404 and the cross plate 408 approach each other, and then the raw material is heat-sealed again. At the same time, the output end of the second motor 414 drives the first bevel gear 416 to rotate. The first bevel gear 416 is in meshing transmission with the second bevel gear 419. Then, when the guide rod 418 rotates in the positioning frame 505, the guide rod 418 drives the fourth bevel gear 508 to rotate. The fourth bevel gear 508 is in meshing transmission with the third bevel gear 507, so that the threaded rod 506 rotates, prompting the moving rod 504 to drive the mounting plate 502 to descend. At this time, the heat-sealed tray is located above the positioning plate, and then the annular cutting knife 503 cuts the periphery of the formed raw material, and then the redundant material edge can be removed to ensure the accuracy and aesthetics of the shape of the heat-sealed tray.

[0035] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0036] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. An automatic thermoforming production line for thermoformed trays, comprising a workbench (1), characterized in that: Above the workbench (1), a conveying mechanism (2) is provided. On the top surface of the conveying mechanism (2), a forming mechanism (4) is fixedly arranged. The forming mechanism (4) includes a first support frame (401). The first support frame (401) is fixedly arranged on the bottom surface of the workbench (1). A first connecting plate (402) is slidably arranged in the first support frame (401). On the top surface of the first connecting plate (402), a first connecting rod (403) is fixedly arranged. At the top end of the first connecting rod (403), a mold body (404) is fixedly arranged. On the top surface of the conveying mechanism (2), a second support frame (405) is fixedly arranged. A second connecting plate (406) is slidably arranged in the second support frame (405). On the bottom surface of the second connecting plate (406), a second connecting rod (407) is fixedly arranged. On the bottom surface of the second connecting rod (407), a cross plate (408) is fixedly arranged. On the bottom surface of the cross plate (408), a pressing plate (420) is fixedly arranged. On one side of the conveying mechanism (2), a housing (413) is fixedly arranged. A second motor (414) is installed in the housing (413). At the output end of the second motor (414), a toothed ring (415) is fixedly arranged. On one side of the first connecting plate (402) and the second connecting plate (406), a toothed plate (417) is fixedly arranged. The toothed ring (415) meshes with the toothed plate (417).

2. The automatic thermoforming production line of a thermoformed tray according to claim 1, characterized in that On the bottom surface of the workbench (1), a vacuum pump body (411) is installed. On one side of the vacuum pump body (411), a telescopic hose (412) is fixedly arranged. On the outer surface of a fixed pipe (409) fixedly arranged at the bottom end of the mold body (404), a suction pipe (410) is fixedly arranged. The suction pipe (410) is fixedly inserted into the mold body (404). The telescopic hose (412) is fixedly inserted into the fixed pipe (409).

3. The automatic thermoforming production line of a thermoformed tray according to claim 1, characterized in that, On the top surface of the conveying mechanism (2), a cutting mechanism (5) is fixedly arranged. The cutting mechanism (5) includes a mounting frame (501). A mounting plate (502) is slidably arranged in the mounting frame (501). On the bottom surface of the mounting plate (502), an annular cutting tool (503) is installed. On both sides of the mounting frame (501), positioning frames (505) are fixedly arranged. In the positioning frames (505), threaded rods (506) are rotatably arranged. A moving rod (504) is threadedly sleeved on the outer surface of the threaded rod (506). One end of the moving rod (504) is fixedly arranged on the top surface of the mounting plate (502).

4. The automatic thermoforming production line of a thermoformed tray according to claim 3, characterized in that In the positioning frame (505), a guide rod (418) is rotatably arranged. At one end of the guide rod (418), a fourth bevel gear (508) is fixedly arranged. At the bottom surface of the threaded rod (506), a third bevel gear (507) is fixedly arranged, and the third bevel gear (507) meshes with the fourth bevel gear (508).

5. The automatic thermoforming production line of a thermoformed tray according to claim 4, characterized in that, The other end of the guide rod (418) is rotatably disposed in the housing (413); a second bevel gear (419) is fixedly disposed at one end of the guide rod (418) away from the fourth bevel gear (508); a first bevel gear (416) is fixedly disposed at the output end of the second motor (414), and the first bevel gear (416) is meshed with the second bevel gear (419).

6. The automatic thermoforming production line of a thermoformed tray according to claim 1, characterized in that, A heating mechanism (3) is installed on the top surface of the conveying mechanism (2), and the heating mechanism (3) comprises a fixed frame (301), a fan (302) is fixedly arranged in the fixed frame (301), an electric heating pipe (303) is installed in the fixed frame (301), a shunt pipe (304) is fixedly arranged in the fixed frame (301), a connecting pipe (305) is fixedly arranged on the outer surface of the shunt pipe (304), the connecting pipe (305) is fixedly inserted in the fixed frame (301), and an air outlet (306) is fixedly arranged in the shunt pipe (304).

7. An automatic thermoforming production line for thermoformed trays according to claim 1, characterized in that, The conveying mechanism (2) comprises a support plate (201), a cooling fan (214) is fixedly provided on the top surface of the support plate (201), a first motor (202) is installed on one side of the support plate (201), a rotating shaft (203) is fixedly provided at the output end of the first motor (202), a rotating rod (205) is rotatably connected inside the support plate (201), a driving sprocket (204) is fixedly provided on the outer surface of the rotating shaft (203), a driven sprocket (206) is fixedly provided on the outer surface of the rotating rod (205), and a chain (207) is transmission-connected between the driving sprocket (204) and the driven sprocket (206).

8. The automatic thermoforming production line of a thermoformed tray according to claim 7, characterized in that, A first limiting rod (208) is rotatably connected inside the support plate (201), a limiting groove (209) is provided inside the support plate (201), a movable rod (210) is fixedly provided inside the limiting groove (209), a movable block (211) is slidably sleeved on the outer surface of the movable rod (210), a spring (212) is fixedly connected between the limiting groove (209) and the movable block (211), and a second limiting rod (213) is rotatably connected to one side of the movable block (211).

9. The automatic thermoforming production line of a thermoformed tray according to claim 8, characterized in that, A fixing ear (101) is fixedly provided on the top surface of the workbench (1), a reeling roller (102) is rotatably connected inside the fixing ear (101), and an ear plate (103) is fixedly provided on the top surface of the workbench (1), and a limiting roller (104) is rotatably connected between the ear plates (103).

10. A thermoformed tray automatic thermoforming production process according to any one of claims 1-9, characterized in that, The following steps are involved: S1, winding the raw material on the surface of the unwinding roller (102), then passing one end of the raw material from under the limiting roller (104) and placing it on the surface of the chain (207), and at the same time, the second limiting rod (213) contacts the top surface of the raw material; S2, then turning on the first motor (202), so that the rotating shaft (203) and the rotating rod (205) rotate synchronously, and then the chain (207) transports the raw materials; S3. After being conveyed to the lower part of the heating mechanism (3), by turning on the fan (302) and the electric heating tube (303), the air in the fixed frame (301) can be heated, and the hot air is blown onto the surface of the raw material, so that the raw material can be heated; S4. When it is then conveyed to the middle of the forming mechanism (4), through the mutual movement of the mold body (404) and the cross plate (408), the pressing plate (420) presses the raw material, so that the raw material can completely fit on the top surface of the mold body (404); S5. Then turn on the vacuum pump body (411), so that the telescopic hose (412) sucks air, and then the suction pipe (410) extracts the air in the mold body (404), prompting the raw material to be thermoformed in the mold body (404), and thus thermoforming can be achieved; S6. Turn on the cold air blower (214), so that the cold air is ejected from the cold air pipe, and then the formed thermoformed tray can be cooled; S7. Then convey the raw material again. At this time, the thermoformed tray is located above the positioning plate, and then the annular cutting knife (503) cuts the periphery of the formed raw material, so that the excess material edge can be removed.

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