Thermoforming machine for plastic products

Abstract

The utility model discloses a thermoforming machine for plastic products, which relates to the technical field of plastic product processing, and comprises a bottom plate, a heating device is fixedly arranged at the top end of the bottom plate, the heating device comprises a support frame, the upper end and the lower end of the support frame are fixedly connected with warm air blowers, and the warm air blowers are fixedly connected with hot air blowers. One ends of the two warm air blowers are fixedly connected with air conveying pipes, one ends of the two air conveying pipes are connected with drying boxes in a penetrating mode, a plurality of hot air holes are formed in one ends of the opposite faces of the two drying boxes, and a plurality of heating pipes are fixedly connected to the inner walls of the two sides of the two drying boxes. The plastic product thermoforming machine comprises a supporting frame, four first rotating shafts are jointly connected to the inner walls of the two sides of the supporting frame in a penetrating mode, rollers are connected to the outer surfaces of the four first rotating shafts in a sleeved mode, and rolling wheels are fixedly connected to the two ends of the four first rotating shafts. And the heated and softened plastic can be extruded and formed.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic product processing, in particular to a plastic product thermoforming machine. Background Art

[0002] Plastic products such as plastic cups, plastic bowls, plastic boxes, etc. are processed and formed by thermoforming machines. During the processing, the plastic sheets are pulled and transported by the conveyor track mechanism, so that the plastic sheets enter various workstations for processing.

[0003] However, the prior art still has the following problems:

[0004] First of all, the plastic product thermoforming machine needs to heat the plastic sheet. The plastic sheet enters the heating station and is softened by the heating device. However, the existing heating devices on the market cannot effectively heat and soften the plastic sheet, which will cause the product to fail to meet the standards during thermoforming.

[0005] Secondly, the plastic product thermoforming machine will extrude and mold the plastic after heating and softening. The extrusion molding is performed by a molding device. Most thermoforming machines cannot effectively extrude and mold the plastic after heating and softening, and their practicality is low.

[0006] In view of the above problems, the inventor proposes a plastic product thermoforming machine for solving the above problems. Utility Model Content

[0007] In order to solve the problem that a plastic sheet cannot be effectively heated to soften it and the problem that the heated and softened plastic cannot be effectively extruded and formed; the purpose of the utility model is to provide a plastic product thermoforming machine.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a plastic product thermoforming machine, comprising a bottom plate, both sides of the top of the bottom plate are fixedly provided with transport devices, the transport device comprises two fixed plates, one end of the opposite surfaces of the two fixed plates are connected to a second rotating shaft for common rotation, one end of one of the fixed plates is provided with a second motor, the output end of the second motor is fixedly connected to one end of the second rotating shaft, an extrusion device is fixedly provided at the top of the bottom plate, a heating device is fixedly provided at the top of the bottom plate, the heating device comprises a support frame, the upper and lower ends of the support frame are fixedly connected with a heater, one end of the two heaters is fixedly connected with an air pipe, one end of the two air pipes passes through A drying box is connected, and multiple hot air holes are opened at one end of the opposite surfaces of the two drying boxes. Multiple heating pipes are fixedly connected to the inner walls of both sides of the two drying boxes. The heater blows hot air into the drying box, and the heating pipes heat the inside of the drying box. Four first rotating shafts are commonly penetrated and connected to the inner walls of both sides of the support frame, and the outer surfaces of the four first rotating shafts are sleeved with rollers. Both ends of the four first rotating shafts are fixedly connected with rollers, and the outer surfaces of every two rollers on the same horizontal plane are commonly sleeved with belts. One end of the support frame is fixedly connected to a support plate, and one side inner wall of the support plate is fixedly connected to two first motors, and the output ends of the two first motors are respectively fixedly connected to one end of the roller.

[0009] Preferably, the extrusion device includes a top plate, both sides of the top end of the top plate are fixedly connected to limit rods, the top ends of the two limit rods pass through the bottom end of the top plate, the outer surfaces of the two limit rods are sleeved with hollow tubes, the bottom ends of the two hollow tubes are respectively fixedly connected to the two sides of the top end of the top plate, a cylinder is provided at the top of the top plate, the output end of the cylinder passes through the top end of the top plate and is fixedly connected to an extrusion plate, both ends of the two extrusion plates are fixedly connected to side plates, both ends of the extrusion plates are fixedly connected to two sliders, one end of the opposite surfaces of the two side plates is provided with two sliding grooves used to cooperate with the sliders, the outer surface of the slider is in contact with the inner wall of the sliding groove, the extrusion plate moves downward to drive the slider to slide in the inner wall of the sliding groove provided in the side plate, and the slider The slide groove is in a "T" shape, and the lower parts of one end of the opposite surfaces of the two side panels are jointly fixedly connected with a support. The top of the support is fixedly connected with four guide rods distributed in a rectangular array, and the tops of the four guide rods are respectively connected to the top of the extrusion plate, and the outer surfaces of the four guide rods are sleeved with springs, and the tops of the four springs are jointly fixedly connected with a base, and the bottom ends of the four springs are jointly fixedly connected with the top of the support. One end of the opposite surfaces of the two side panels is provided with a through groove, and the bottom end of the extrusion plate is fixedly connected with a plurality of extrusion blocks, and the bottom end of the base is fixedly connected with a plurality of placement frames used in conjunction with the extrusion blocks. The plurality of extrusion blocks and the placement frame are distributed in a rectangular array, and the outer surface of the extrusion block fits with the inner wall of the placement frame.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model can drive the first rotating shaft to rotate by the two rollers rotating respectively, the first rotating shaft rotates to drive the roller to rotate, the two rollers rotate to drive the plastic sheet to move, and the hot air is blown into the outer surface of the plastic sheet from the hot air hole, thereby achieving the purpose of effectively heating the plastic sheet to soften it;

[0012] 2. The utility model can extrude the plastic sheet by moving the extrusion plate downward, the extrusion plate extrusion base moves downward, the top end of the guide rod penetrates the top end of the extrusion plate, and the plastic sheet is cut into the placement frame, thereby achieving the purpose of effectively extruding the heated and softened plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model 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 utility model. 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 structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the heating device of the utility model.

[0016] Figure 3 It is a schematic diagram of the extrusion device of the utility model.

[0017] Figure 4 It is a schematic diagram of the transportation device of the utility model.

[0018] In the figure: 1, bottom plate; 2, heating device; 3, extrusion device; 4, transportation device; 201, support frame; 202, heater; 203, air pipe; 204, drying box; 205, hot air hole; 206, heating pipe; 207, first rotating shaft; 208, roller; 209, roller; 210, belt; 211, support plate; 212, first motor; 301, top plate; 302, limit rod; 303, hollow tube; 304, cylinder; 305, extrusion plate; 306, side plate; 307, slider; 308, slide groove; 309, support; 310, guide rod; 311, spring; 312, base; 313, through groove; 314, extrusion block; 315, placement frame; 41, fixing plate; 42, second rotating shaft; 43, second motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example: Figure 1-4 As shown, the utility model provides a plastic product thermoforming machine, including a bottom plate 1, both sides of the top of the bottom plate 1 are fixedly provided with a transport device 4, the transport device 4 includes two fixed plates 41, one end of the opposite surfaces of the two fixed plates 41 are rotatably connected with a second rotating shaft 42, one end of one of the fixed plates 41 is provided with a second motor 43, the output end of the second motor 43 is fixedly connected to one end of the second rotating shaft 42, an extrusion device 3 is fixedly provided on the top of the bottom plate 1, a heating device 2 is fixedly provided on the top of the bottom plate 1, the heating device 2 includes a support frame 201, the upper and lower ends of the support frame 201 are fixedly connected with a heater 202, one end of the two heaters 202 is fixedly connected with an air pipe 203, one end of the two air pipes 203 is penetrated and connected with a drying box 204, the two drying boxes 204 A plurality of hot air holes 205 are provided at one end of the opposite surface of the two drying boxes 204, and a plurality of heating tubes 206 are fixedly connected to the inner walls on both sides of the two drying boxes 204. The heater 202 blows hot air into the drying boxes 204, and the heating tubes 206 heat the interior of the drying boxes 204. Four first rotating shafts 207 are commonly connected to the inner walls on both sides of the support frame 201, and the outer surfaces of the four first rotating shafts 207 are sleeved with rollers 208. Both ends of the four first rotating shafts 207 are fixedly connected with rollers 209, and the outer surfaces of every two rollers 209 on the same horizontal plane are commonly sleeved with belts 210. A support plate 211 is fixedly connected to one end of the support frame 201, and two first motors 212 are fixedly connected to the inner wall of one side of the support plate 211, and the output ends of the two first motors 212 are respectively fixedly connected to one end of the rollers 209;

[0021] The belt 210 rotates to drive another roller 209 to rotate. The two rollers 209 rotate to drive the first shaft 207 to rotate. The first shaft 207 rotates to drive the roller 208 to rotate. The two rollers 208 rotate to drive the plastic sheet to move. Hot air blows into the outer surface of the plastic sheet from the hot air holes 205, which can effectively heat the plastic sheet to soften it.

[0022] The extrusion device 3 includes a top plate 301, both sides of the top of the top plate 301 are fixedly connected to limit rods 302, the tops of the two limit rods 302 pass through the bottom of the top plate 301, the outer surfaces of the two limit rods 302 are sleeved with hollow tubes 303, the bottom ends of the two hollow tubes 303 are respectively fixedly connected to the top sides of the top plate 301, a cylinder 304 is provided at the top of the top plate 301, the output end of the cylinder 304 passes through the top of the top plate 301 and is fixedly connected to an extrusion plate 305, the extrusion plate 305 The downward movement drives the two limit rods 302 to slide in the inner wall of the hollow tube 303 respectively. The two ends of the two extrusion plates 305 are fixedly connected to the side plates 306. The two ends of the extrusion plates 305 are fixedly connected to two sliders 307. One end of the opposite surface of the two side plates 306 is provided with two slide grooves 308 used to cooperate with the sliders 307. The outer surface of the slider 307 is in contact with the inner wall of the slide groove 308. The downward movement of the extrusion plate 305 drives the slider 307 to slide in the inner wall of the slide groove 308 provided in the side plate 306. The slider 307 and the slide groove 308 are both in a "T" shape. The lower parts of one end of the opposite surface of the two side plates 306 are fixedly connected with a support 309. The top of the support 309 is fixedly connected with four guide rods 310 distributed in a rectangular array. The tops of the four guide rods 310 are respectively connected to the top of the extrusion plate 305. The outer surfaces of the four guide rods 310 are sleeved with springs 311. The base 312 moves downward to apply pressure to the spring 311. The spring 311 is compressed and deformed by the force. The tops of the four springs 311 The ends of the extrusion plates 305 are fixedly connected with a base 312, the bottom ends of the four springs 311 are fixedly connected with the top of the support 309, one end of the opposite surface of the two side plates 306 is provided with a through slot 313, the bottom end of the extrusion plate 305 is fixedly connected with a plurality of extrusion blocks 314, the bottom end of the base 312 is fixedly connected with a plurality of placement frames 315 used in conjunction with the extrusion blocks 314, the plurality of extrusion blocks 314 and the placement frames 315 are distributed in a rectangular array, and the outer surface of the extrusion block 314 is in contact with the inner wall of the placement frame 315;

[0023] The extrusion plate 305 moves downward to extrude the plastic sheet, and the extrusion plate 305 squeezes the base 312 to move downward. The base 312 moves downward to apply pressure to the spring 311, and the spring 311 is compressed and deformed under the force. The top end of the guide rod 310 penetrates the top end of the extrusion plate 305, and the extrusion block 314 fits with the inner wall of the placement frame 315. The plastic sheet will be cut into the placement frame 315, and the plastic after heating and softening can be effectively extruded into shape.

[0024] Working principle: First, the rolled plastic sheet to be processed is passed through the outer surface of one of the second rotating shafts 42 in sequence between the two drying boxes 204, and then passed through the top of the base 312 and wound around the outer surface of the other second rotating shaft 42, and the second motor 43 in the transport device 4 is turned on, and the output end of the second motor 43 rotates to drive the plastic sheet on the outer surface of the second rotating shaft 42 to rotate and move. When the plastic sheet needs to be heated and softened, the heater 202 in the heating device 2 is turned on, and the heater 202 blows hot air into the drying box 204, and the heating pipe 206 heats the drying box 204. The first motor 212 is turned on, and the output end of the first motor 212 rotates to drive one of the rollers 209, and the rotation of one of the rollers 209 drives the belt 210 to rotate, and the belt 210 rotates to drive the other roller 209 to rotate, and the two rollers 209 rotate to drive the first rotating shaft 207 to rotate, and the rotation of the first rotating shaft 207 drives the roller 208 to rotate, and the two rollers 208 rotate to drive the plastic sheet to move, and the hot air is blown into the outer surface of the plastic sheet from the hot air hole 205, thereby achieving the purpose of effectively heating the plastic sheet to soften it;

[0025] When the heated and softened plastic sheet enters the top of the base 312 from the through groove 313, the cylinder 304 is turned on, and the output end of the cylinder 304 drives the extrusion plate 305 to move downward. The extrusion plate 305 moves downward to drive the two limit rods 302 to slide in the inner walls of the hollow tube 303 respectively, and the extrusion plate 305 moves downward to drive the slider 307 to slide in the inner wall of the slide groove 308 provided in the side plate 306, and the extrusion plate 305 moves downward to extrude the plastic sheet. The extrusion plate 305 squeezes the base 312 to move downward, and the base 312 moves downward to apply pressure to the spring 311, and the spring 311 is compressed and deformed under the force, and the top of the guide rod 310 penetrates the top of the extrusion plate 305, and the extrusion block 314 fits with the inner wall of the placement frame 315, and the plastic sheet will be cut and entered into the placement frame 315, thereby achieving the purpose of effectively extruding the heated and softened plastic.

[0026] Obviously, those skilled in the art can make various changes and modifications 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 equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A plastic product thermoforming machine, comprising a base plate (1), characterized in that: A transport device (4) is fixedly provided on both sides of the top of the bottom plate (1), an extrusion device (3) is fixedly provided on the top of the bottom plate (1), and a heating device (2) is fixedly provided on the top of the bottom plate (1); The heating device (2) comprises a support frame (201), the upper and lower ends of the support frame (201) are fixedly connected to a heater (202), one end of each of the two heaters (202) is fixedly connected to an air supply pipe (203), one end of each of the two air supply pipes (203) is connected through a drying box (204), and the inner walls on both sides of the support frame (201) are connected through four first rotating shafts (207), and the outer surfaces of the four first rotating shafts (207) are sleeved with rollers. The cylinder (208) is provided with a roller (209) at both ends of the four first rotating shafts (207), and the outer surfaces of every two rollers (209) on the same horizontal plane are commonly sleeved with a belt (210), one end of the support frame (201) is fixedly connected to a support plate (211), and one side inner wall of the support plate (211) is fixedly connected to two first motors (212), and the output ends of the two first motors (212) are respectively fixedly connected to one end of the roller (209).

2. A plastic product thermoforming machine as claimed in claim 1, characterized in that: The extrusion device (3) comprises a top plate (301), both sides of the top of the top plate (301) are fixedly connected to limit rods (302), the top ends of the two limit rods (302) pass through the bottom end of the top plate (301), the outer surfaces of the two limit rods (302) are sleeved with hollow tubes (303), the bottom ends of the two hollow tubes (303) are respectively fixedly connected to both sides of the top of the top plate (301), the top of the top plate (301) is provided with a cylinder (304), the output end of the cylinder (304) passes through the top of the top plate (301) and is fixedly connected to an extrusion plate (305), both ends of the two extrusion plates (305) are fixedly connected to side plates (306), the two side plates (306) are relatively close to each other. The lower part of one end of the surface is fixedly connected with a support (309), the top of the support (309) is fixedly connected with four guide rods (310) distributed in a rectangular array, the outer surfaces of the four guide rods (310) are sleeved with springs (311), the tops of the four springs (311) are fixedly connected with a base (312), the bottoms of the four springs (311) are fixedly connected with the top of the support (309), one end of the opposite surface of the two side plates (306) is provided with a through groove (313), the bottom end of the extrusion plate (305) is fixedly connected with a plurality of extrusion blocks (314), and the bottom end of the base (312) is fixedly connected with a plurality of placement frames (315) used in conjunction with the extrusion blocks (314).

3. A plastic product thermoforming machine as claimed in claim 1, characterized in that: The transport device (4) comprises two fixed plates (41), one end of opposite surfaces of the two fixed plates (41) being rotatably connected to a second rotating shaft (42), one end of one of the fixed plates (41) being provided with a second motor (43), and an output end of the second motor (43) being fixedly connected to one end of the second rotating shaft (42).

4. A plastic product thermoforming machine as claimed in claim 1, characterized in that: A plurality of hot air holes (205) are provided at one end of the opposite surfaces of the two drying boxes (204), and a plurality of heating tubes (206) are fixedly connected to the inner walls on both sides of the two drying boxes (204).

5. A plastic product thermoforming machine as claimed in claim 2, characterized in that: Two sliders (307) are fixedly connected to both ends of the extrusion plate (305), and two slide grooves (308) for matching with the sliders (307) are provided at one end of the opposite surfaces of the two side plates (306).

6. A plastic product thermoforming machine as claimed in claim 5, characterized in that: The outer surface of the slider (307) fits the inner wall of the slide groove (308), and the slider (307) and the slide groove (308) are both in a "T" shape.

7. A plastic product thermoforming machine as claimed in claim 2, characterized in that: The top ends of the four guide rods (310) are respectively connected through the top end of the extrusion plate (305).

8. A plastic product thermoforming machine as claimed in claim 2, characterized in that: The plurality of extrusion blocks (314) and the placement frame (315) are distributed in a rectangular array, and the outer surface of the extrusion block (314) fits the inner wall of the placement frame (315).

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