Heat shrink packaging machine

Abstract

The utility model relates to the technical field of thermal shrinkage packaging, and discloses a thermal shrinkage packaging machine which comprises two supports and a heating cover, a clamping groove is formed in the top end of the support on the rear side, a hydraulic cylinder is fixedly connected to the middle of the front side of the support on the front side, the driving end of the hydraulic cylinder is fixedly connected with a connecting shaft, and the driving end of the hydraulic cylinder is fixedly connected with the heating cover. A limiting plate is fixedly connected to the front side of the support on the front side, protruding blocks are fixedly connected to the left side and the right side of the limiting plate, springs are fixedly connected to the outer portions of the protruding blocks, a connecting plate is fixed to the middle of the front side of the heating cover, a connecting rod is fixedly connected to the front side of the connecting plate, and a connecting assembly is fixedly connected to the middle of the front side of the heating cover. According to the burdock tea gift box, the opening of the heating cover can be easily opened, accessories can be easily replaced, maintenance and cleaning are more convenient, and plastic paper outside the burdock tea gift box can be shrunk by heating in all directions.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrink packaging, in particular to a heat shrink packaging machine. Background Art

[0002] A heat shrink packaging machine wraps a product with a heat shrink film and then heats it, so that the heat shrink film shrinks to tightly wrap the product; the heat shrink packaging machine mainly includes a frame, a conveyor belt assembly, and a heating box located above the conveyor belt assembly. There are multiple heating tubes in the heating box. During use, the product wrapped with the heat shrink film is sequentially passed through the heating box through the conveyor belt assembly to heat the heat shrink film, and this equipment is used to package burdock tea gift boxes in the production of burdock tea gift boxes.

[0003] After retrieval, a Chinese patent with the publication number of CN219257935U discloses a heat shrink packaging machine. The key points of its technical solution include a frame, a conveying device and a heating box are arranged on the frame, a feed inlet and a discharge outlet are arranged on the heating box, and wind blocking components are arranged at both the feed inlet and the discharge outlet; the wind blocking component includes a transmission shaft elastically hinged to the frame, and a control board is fixedly connected to the transmission shaft; it also includes a rotating shaft located above the feed inlet or the discharge outlet and rotatably connected to the heating box, and a wind blocking curtain is wound on the rotating shaft; a transmission component is also arranged between the transmission shaft and the rotating shaft; when the transmission shaft rotates, the transmission component drives the rotating shaft to rotate; through the above structure, when an article passes by the control board, the transmission component drives the wind blocking curtain to wind up, thus avoiding the wind blocking curtain covering the top of the article and affecting the forming effect of the heat shrink film; at the same time, when the article is far away from the control board, the wind blocking curtain can quickly fall to block the opening of the heating box, reducing the heat dissipation of the heating box.

[0004] The above patent mentions in its working principle that "when the article enters or exits the heating box 3, it will not come into contact with the wind blocking curtain 44; avoiding the wind blocking curtain 44 from blocking the heat shrink film on the top of the article, ensuring that the hot air can evenly heat and blow the periphery of the heat shrink film, making the forming effect of the heat shrink film better, reducing the generation of wrinkles and bubbles. At the same time, when the conveyor belt conveys articles with a large volume and high height, the wind blocking curtain will not cover the top of the article, so that the article needs to be far away from the feed inlet or the discharge outlet for a certain distance before the wind blocking curtain will fall again to block the opening; reducing the opening time of the heating box, and thus reducing the heat loss in the heating box". However, since the heating box is fixed on the top of the transmission mechanism, if a waste film situation occurs, the user cannot maintain and clean it. To solve the above problems, a heat shrink packaging machine is proposed. Summary of the Utility Model

[0005] The purpose of the present utility model is to solve the deficiencies existing in the prior art, and a heat shrink packaging machine is proposed, aiming to improve the problem that in the prior art, the heating box is fixed on the top of the transmission mechanism, resulting in the inability to perform maintenance in case of waste film

[0006] To achieve the above object, the present utility model provides the following technical solutions:

[0007] A heat shrink packaging machine, including two brackets and a heating cover. A card slot is provided at the top end of the rear bracket. A support member is fixedly connected to the middle part of the front side of the front bracket. A hydraulic cylinder is fixedly connected to the top end of the support member. A connecting shaft is fixedly connected to the driving end of the hydraulic cylinder. A limiting plate is fixedly connected to the front side of the front bracket. Convex blocks are fixedly connected to both the left and right sides of the limiting plate. Springs are fixedly connected to the outside of the convex blocks. A connecting plate is fixed to the middle part of the front side of the heating cover. A connecting rod is fixedly connected to the front side of the connecting plate. A connecting component is fixedly connected to the middle part of the front side of the heating cover. Hinges are fixedly connected to both the left and right sides of the front side of the heating cover. A controller is fixedly connected to the top end of the heating cover. A heating plate is fixedly connected to the middle part of the bottom end of the heating cover;

[0008] As a further description of the above technical solution:

[0009] The connecting component includes a positioning block and a rotating block. The rear end of the positioning block is fixedly connected to the middle part of the front side of the heating cover. The top end of the rotating block is rotatably connected to the middle part of the positioning block;

[0010] As a further description of the above technical solution:

[0011] Curtains are fixedly connected to both the left and right sides of the heating cover. A clamping block is fixedly connected to the bottom end of the rear side of the heating cover;

[0012] As a further description of the above technical solution:

[0013] Grooves are provided around the bottom end of the heating cover. Through grooves are provided on both the left and right sides of the bracket;

[0014] As a further description of the above technical solution:

[0015] Long plates are fixedly connected to the adjacent sides of the two brackets. A support plate is fixedly connected to the adjacent sides of the two brackets. Two air blowers are fixedly connected to the top end of the support plate. Protective blocks are fixedly connected to both the left and right sides of the two brackets. A motor is fixedly connected to the front side of the left protective block. A rotating shaft one is fixedly connected to the driving end of the motor. A transmission belt is slidably connected to the outside of the rotating shaft one. A rotating shaft two is slidably connected to the inside right side of the transmission belt;

[0016] As a further description of the above technical solution:

[0017] The top ends of the springs are fixedly connected to the left and right ends of the connecting rod, and the middle part of the top end of the coupling shaft penetrates through the limiting plate and is rotatably connected to the bottom end of the rotating block;

[0018] As a further description of the above technical solution:

[0019] The bottom end at the rear side of the hinge is fixedly connected to the left and right sides at the front side of the front side bracket;

[0020] As a further description of the above technical solution:

[0021] The outside of the conveyor belt is slidably connected to the top end of the long board and the top end of the protective block. The conveyor belt is sleeved outside the support plate and the fan. The front and rear ends of the second rotating shaft are rotatably connected to the front and rear sides of the protective block on the right end, and the rear end of the first rotating shaft is rotatably connected to the rear side of the inner wall of the protective block on the left end.

[0022] The present utility model has the following beneficial effects:

[0023] 1. In the present utility model, through the cooperation of components such as the hydraulic cylinder, coupling shaft, hinge, positioning block, etc., by starting the hydraulic cylinder to drive the coupling shaft to connect the rotating block to pull the heating cover to rotate and open, the opening of the heating cover can be easily opened, the accessories can be easily replaced, which is convenient for maintenance and more convenient for cleaning.

[0024] 2. In the present utility model, through the cooperation of components such as the curtain, clamping block, groove, through groove, fan, etc., the heat energy in the groove flows out concentratedly through the through groove, realizing the all-round heating and shrinking of the plastic paper outside the burdock tea gift box. Description of the Drawings

[0025] Figure 1 Is a perspective view of a heat shrink packaging machine proposed by the present utility model;

[0026] Figure 2 Is a schematic structural diagram of the hydraulic cylinder of a heat shrink packaging machine proposed by the present utility model;

[0027] Figure 3 Is a schematic structural diagram of the heating plate of a heat shrink packaging machine proposed by the present utility model;

[0028] Figure 4 Is a schematic structural diagram of the through groove of a heat shrink packaging machine proposed by the present utility model;

[0029] Figure 5 Is a schematic structural diagram of the conveyor belt of a heat shrink packaging machine proposed by the present utility model.

[0030] Legend Explanation:

[0031] 1. Bracket; 2. Card slot; 3. Support member; 4. Hydraulic cylinder; 5. Coupling shaft; 6. Limit plate; 7. Protrusion; 8. Spring; 9. Heating cover; 10. Connecting plate; 11. Connecting rod; 12. Positioning block; 13. Rotating block; 14. Hinge; 15. Controller; 16. Heating plate; 17. Curtain; 18. Clamping block; 19. Groove; 20. Through groove; 21. Long plate; 22. Support plate; 23. Fan; 24. Protection block; 25. Motor; 26. First rotating shaft; 27. Transmission belt; 28. Second rotating shaft. Detailed implementation manner

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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.

[0033] Refer to Figures 1 - 3 , an embodiment provided by the present invention: A heat shrink packaging machine includes two brackets 1 and a heating cover 9. A card slot 2 is opened at the top of the rear bracket 1. The design of the card slot 2 is to better limit the position of the heating cover 9. A support member 3 is fixedly connected to the middle of the front side of the front bracket 1. The top of the support member 3 is fixedly connected to a hydraulic cylinder 4. A limit plate 6 is fixedly connected to the front side of the front bracket 1. The driving end of the hydraulic cylinder 4 is fixedly connected to a coupling shaft 5. The support member 3 and the limit plate 6 limit and support the hydraulic cylinder 4. The hydraulic cylinder 4 starts to drive the coupling shaft 5 to expand and contract. Protrusions 7 are fixedly connected to both the left and right sides of the limit plate 6. Springs 8 are fixedly connected to the outside of the protrusions 7. The protrusions 7 serve as a connection and support point for the springs 8.

[0034] A connecting plate 10 is fixed to the middle of the front side of the heating cover 9. A connecting rod 11 is fixedly connected to the front side of the connecting plate 10. A connecting component is fixedly connected to the middle of the front side of the heating cover 9. The connecting rod 11 and the connecting plate 10 are aligned with the position of the support member 3 and are fixed at the middle position of the front side of the heating cover 9. Hinges 14 are fixedly connected to both the left and right sides of the front side of the heating cover 9. The hinges 14 assist the heating cover 9 to rotate stably. A controller 15 is fixedly connected to the top of the heating cover 9. A heating plate 16 is fixedly connected to the middle of the bottom end of the heating cover 9. The controller 15 starts the heating plate 16 to generate heat energy.

[0035] Refer to Figure 2The top end of the spring 8 is fixedly connected to the left and right ends of the connecting rod 11. The spring 8 connects the connecting rod 11 and the protrusion 7, so that the heating cover 9 will not shake when it rotates around the connecting plate 10. The rear bottom end of the hinge 14 is fixedly connected to the left and right sides of the front side of the front bracket 1. The connecting assembly includes a positioning block 12 and a rotating block 13. The rear end of the positioning block 12 is fixedly connected to the middle of the front side of the heating cover 9. The top end of the rotating block 13 is rotatably connected to the middle of the positioning block 12. The middle of the top end of the connecting shaft 5 passes through the limiting plate 6 and is rotatably connected to the bottom end of the rotating block 13. The limiting plate 6 limits the pulling position of the connecting shaft 5. The connecting shaft 5 is connected to the rotating block 13 to pull the rotating block 13 to rotate in the middle of the positioning block 12. Compared with the above documents, the function of opening the heating cover 9 is added, which solves the problem of difficulty in cleaning the waste film and the problem of maintaining the bottom of the heating cover 9.

[0036] refer to Figure 3 , Figure 4 , the left and right sides of the heating cover 9 are fixedly connected with curtains 17, and the curtains 17 are made of soft material, which can make the position of the heating cover 9 a sealed space, so as to better heat and shrink the plastic paper outside the burdock tea gift box, and the rear bottom of the heating cover 9 is fixedly connected with a card block 18, and the card block 18 is engaged in the card slot 2, and the auxiliary heating cover 9 is aligned with the top of the bracket 1. Grooves 19 are provided around the bottom of the heating cover 9, and through grooves 20 are provided on the left and right sides of the bracket 1. The grooves 19 and the through grooves 20 are aligned, and the heat energy in the grooves 19 flows into the through grooves 20 and flows out in a concentrated manner. A long plate 21 is fixedly connected to the adjacent side of the two brackets 1, and a support plate 22 is fixedly connected to the adjacent side of the two brackets 1. Two fans 23 are fixedly connected to the top of the support plate 22. This design is to prevent the leakage of heat energy.

[0037] refer to Figure 5 , the left and right sides of the two brackets 1 are fixedly connected with protective blocks 24, the front side of the left protective block 24 is fixedly connected with a motor 25, the driving end of the motor 25 is fixedly connected with a rotating shaft 1 26, and the inner right side of the conveyor belt 27 is slidably connected with a rotating shaft 28, and the front and rear ends of the rotating shaft 28 are rotatably connected to the front and rear sides of the right end protective block 24, and the rear end of the rotating shaft 1 26 is rotatably connected to the rear side of the inner wall of the left end protective block 24. The outer side of the rotating shaft 1 26 is slidably connected with a conveyor belt 27, and the protective block 24 limits the positions of the rotating shaft 1 26 and the rotating shaft 2 28, and the outer side of the conveyor belt 27 is slidably connected to the top of the long board 21 and the top of the protective block 24. Starting the motor 25 can drive the conveyor belt 27 to rotate and pull the rotating shaft 2 28 to rotate synchronously, thereby conveying the burdock tea gift box for transfer, and the conveyor belt 27 is connected by wooden sticks one by one, and there is a gap on the surface. The conveyor belt 27 is sleeved on the outside of the support plate 22 and the fan 23, and the waste film generated at the position of the heating cover 9 flows to the surface of the fan 23.

[0038] Working principle: When the shrink packaging machine needs to be cleaned and maintained, the hydraulic cylinder 4 fixed to the bracket 1 and the support 3 can be activated to pull the coupling shaft 5 to expand and contract, pulling the rotating block 13 to rotate in the middle of the limit plate 6, so that the rotating block 13 connects the connecting plate 10 and the heating cover 9 through the positioning block 12, driving the heating cover 9 to rotate around the connecting plate 10, and cooperating with the connection of the hinge 14 and the indirect connection of the spring 8 between the connecting plate 10 and the limit plate 6 to open the opening of the heating cover 9, easily replace accessories and perform maintenance, and clean the waste film.

[0039] The controller 15 on the heating cover 9 is activated to generate heat on the heating plate 16 to heat and shrink the plastic paper outside the burdock tea gift box moving on the conveyor belt 27. Since the curtain 17 slides on the surface of the conveyor belt 27, the bottom of the heating cover 9 is a sealed space, and the heat will rise and flow through the groove 19 into the through groove 20 and flow out concentratedly. Then, the fan 23 fixed to the support plate 22 is activated to make the heat flow flowing out of the through groove 20 heat and shrink the bottom of the burdock tea gift box moving at the bottom position of the heating plate 16 through the gap of the conveyor belt 27, ensuring that the plastic paper outside the burdock tea gift box is evenly heated and shrunk.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat shrink packaging machine, comprising two supports (1) and a heating cover (9), characterized in that: A slot (2) is provided at the top of the rear bracket (1); a support member (3) is fixedly connected to the middle of the front side of the front bracket (1); a hydraulic cylinder (4) is fixedly connected to the top of the support member (3); a connecting shaft (5) is fixedly connected to the driving end of the hydraulic cylinder (4); a limiting plate (6) is fixedly connected to the front side of the front bracket (1); protrusions (7) are fixedly connected to the left and right sides of the limiting plate (6); a spring (8) is fixedly connected to the outside of the protrusion (7); a connecting plate (10) is fixedly connected to the middle of the front side of the heating cover (9); a connecting rod (11) is fixedly connected to the front side of the connecting plate (10); a connecting assembly is fixedly connected to the middle of the front side of the heating cover (9); hinges (14) are fixedly connected to the left and right sides of the front side of the heating cover (9); a controller (15) is fixedly connected to the top of the heating cover (9); and a heating plate (16) is fixedly connected to the middle of the bottom end of the heating cover (9).

2. A heat shrink packaging machine according to claim 1, characterized in that: The connecting assembly comprises a positioning block (12) and a rotating block (13); the rear end of the positioning block (12) is fixedly connected to the middle of the front side of the heating cover (9); and the top end of the rotating block (13) is rotatably connected to the middle of the positioning block (12).

3. A heat shrink packaging machine according to claim 1, characterized in that: Curtains (17) are fixedly connected to both left and right sides of the heating cover (9), and a clamping block (18) is fixedly connected to the rear bottom end of the heating cover (9).

4. A heat shrink packaging machine according to claim 1, characterized in that: The bottom of the heating cover (9) is provided with grooves (19) around its periphery, and the left and right sides of the bracket (1) are provided with through grooves (20).

5. The heat shrink packaging machine according to claim 1, characterized in that: A long plate (21) is fixedly connected to the adjacent side of the two brackets (1), a support plate (22) is fixedly connected to the adjacent side of the two brackets (1), two fans (23) are fixedly connected to the top of the support plate (22), and protective blocks (24) are fixedly connected to the left and right sides of the two brackets (1), a motor (25) is fixedly connected to the front side of the left protective block (24), a driving end of the motor (25) is fixedly connected to a rotating shaft 1 (26), a transmission belt (27) is slidably connected to the outside of the rotating shaft 1 (26), and a rotating shaft 2 (28) is slidably connected to the right side of the inside of the transmission belt (27).

6. A heat shrink packaging machine according to claim 2, characterized in that: The top end of the spring (8) is fixedly connected to the left and right ends of the connecting rod (11), and the middle part of the top end of the connecting shaft (5) passes through the limiting plate (6) and is rotatably connected to the bottom end of the rotating block (13).

7. A heat shrink packaging machine according to claim 1, characterized in that: The rear bottom end of the hinge (14) is fixedly connected to the front left and right sides of the front bracket (1).

8. The heat shrink packaging machine according to claim 5, characterized in that: The outside of the transmission belt (27) is slidably connected to the top of the long board (21) and the top of the protective block (24), and the transmission belt (27) is sleeved on the outside of the support plate (22) and the fan (23). The front and rear ends of the second rotating shaft (28) are rotatably connected to the front and rear sides of the protective block (24) at the right end, and the rear end of the first rotating shaft (26) is rotatably connected to the rear side of the inner wall of the protective block (24) at the left end.

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