Plastic film heating, stretching and shaping equipment

Abstract

The utility model relates to the technical field of plastic film production, and discloses plastic film heating, stretching and shaping equipment, one side of a heating and stretching box is provided with a preheating mechanism, the preheating mechanism comprises a mounting plate clamped on one side of the heating and stretching box, one side of the mounting plate is respectively provided with a first preheating plate and a second preheating plate from top to bottom, the lower surface of the first preheating plate and the upper surface of the second preheating plate are each provided with two sets of heat conduction plates, air outlet holes are formed in the positions, between the two sets of heat conduction plates, of the lower surface of the first preheating plate and the upper surface of the second preheating plate, and electric heating pipes are arranged in the first preheating plate and the second preheating plate. And a cooling shaping box is mounted on the upper surface of the heating stretching box. Through the arrangement of the mounting plate, the positioning pin, the fixing groove, the first preheating plate, the heat conducting plate, the electric heating pipe, the air outlet hole and the second preheating plate in the preheating mechanism, the plastic film can be prevented from being broken and damaged due to direct heating and stretching.

Description

Technical Field

[0001] This utility model relates to the field of plastic film production technology, specifically a plastic film heating, stretching and shaping equipment. Background Technology

[0002] Plastic film is a thin film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins. It is used for packaging and as a coating layer. It can be widely used in food, medicine, chemical and other fields. When processing plastic film, it needs to be stretched and shaped to process the plastic film into finished products with specific properties and dimensions.

[0003] Chinese patent discloses a plastic film stretching roller mechanism (authorization announcement number CN212422163U). The patented technology uses a heating roller to heat and soften the portion of the plastic film wrapped around the heating roller cylinder. A tension force is applied to the plastic film, causing the softened portion to stretch and become longer. When the tension force is too large, a spring supports the tension roller, and the contact switch on the magnet separates from the bearing seat, causing the state of the contact switch to change. The contact switch then controls the heating roller to stop heating, and at the same time, the take-up roller no longer applies tension, preventing the plastic film from being torn.

[0004] However, most existing methods for heating and stretching plastic films involve directly contacting the plastic film with a heating roller. This direct heating can cause breakage, affecting subsequent processing. For example, the aforementioned prior art uses this method of directly contacting the plastic film with the heating roller. In practical applications, this direct contact can lead to breakage and damage of the plastic film, hindering processing. Therefore, those skilled in the art have provided a plastic film heating, stretching, and shaping device to address the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this invention is to provide a plastic film heating, stretching and shaping device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic film heating, stretching and shaping device includes a base plate, a heating and stretching box mounted on the upper surface of the base plate, and a winding mechanism disposed on the upper surface of the base plate on one side of the heating and stretching box. A preheating mechanism is provided on one side of the heating and stretching box. The preheating mechanism includes a mounting plate snapped onto one side of the heating and stretching box. A first preheating plate and a second preheating plate are respectively disposed on one side of the mounting plate from top to bottom. Two sets of heat-conducting plates are disposed on the lower surface of the first preheating plate and the upper surface of the second preheating plate. An air vent is opened between the two sets of heat-conducting plates on the lower surface of the first preheating plate and the upper surface of the second preheating plate. An electric heating tube is disposed inside the first preheating plate and the second preheating plate.

[0008] The upper surface of the heating and stretching box is equipped with a cooling and shaping box. The interior of the cooling and shaping box is equipped with a baffle, and a second fan is installed behind the baffle inside the cooling and shaping box. The lower surface of the cooling and shaping box is symmetrically equipped with two sets of exhaust pipes inside the heating and stretching box, and exhaust holes are opened on the outside of the exhaust pipes.

[0009] As a further improvement of this utility model: the heating and stretching box is provided with a feed inlet and a discharge outlet on both sides from left to right, and a fixing groove communicating with the feed inlet is provided on one side of the mounting plate.

[0010] As a further improvement of this utility model: a positioning pin is symmetrically arranged on one side of the mounting plate near the heating and stretching box, and a positioning hole is opened on one side of the heating and stretching box to engage with the positioning pin.

[0011] As a further improvement of this utility model: a guide roller is provided inside the heating and stretching box near the feed inlet, and two sets of heating rollers are symmetrically arranged inside the heating and stretching box below the feed inlet.

[0012] As a further improvement of this utility model: an air inlet is provided on the rear surface of the cooling and shaping box, and the height of the baffle inside the cooling and shaping box is half the height of the cooling and shaping box.

[0013] As a further embodiment of this utility model: a semiconductor refrigeration chip is provided on the outside of the cooling and shaping box, and a first fan is installed on the outside of the semiconductor refrigeration chip. The hot end of the semiconductor refrigeration chip is located outside the cooling and shaping box, and the cold end of the semiconductor refrigeration chip is located inside the cooling and shaping box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the arrangement of the mounting plate, positioning pin, fixing groove, first preheating plate, heat-conducting plate, electric heating tube, vent hole and second preheating plate in the preheating mechanism, utilizes the electric heating tube inside the first preheating plate and the second preheating plate to generate heat when energized. The heat is discharged outward through the vent hole to achieve the purpose of preheating the plastic film. The heat is conducted through the heat-conducting plate to achieve the purpose of efficient preheating. It avoids the plastic film from being directly heated and stretched, which would cause it to break and be damaged. The structure is simple and has good practicality.

[0016] 2. This utility model, through the arrangement of a cooling and shaping box, a semiconductor refrigeration chip, a first fan, an air inlet, a baffle, a second fan, an exhaust pipe, and an exhaust port, utilizes the coolant inside the cooling and shaping box to generate cold air. When the second fan is working, the cold air is discharged outward through the exhaust port on the outside of the exhaust pipe, thus achieving the purpose of cooling and shaping the heated and stretched plastic film. The semiconductor refrigeration chip can also cool the coolant inside the cooling and shaping box, achieving the purpose of recycling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a plastic film heating, stretching and shaping device.

[0018] Figure 2 This is a schematic diagram of the preheating mechanism in a plastic film heating, stretching and shaping equipment.

[0019] Figure 3 This is a schematic diagram of the internal structure of a heating and stretching box in a plastic film heating, stretching and shaping equipment.

[0020] Figure 4 This is a schematic diagram of the internal structure of the cooling and shaping box in a plastic film heating, stretching and shaping equipment.

[0021] In the diagram: 1. Base plate; 2. Heating and stretching box; 21. Discharge port; 22. Feed port; 23. Guide roller; 24. Heating roller; 3. Winding mechanism; 4. Cooling and shaping box; 41. Semiconductor refrigeration chip; 42. First fan; 43. Air inlet; 44. Baffle; 45. Second fan; 46. Exhaust pipe; 461. Exhaust hole; 5. Preheating mechanism; 51. Mounting plate; 52. Positioning pin; 53. Fixing groove; 54. First preheating plate; 55. Heat-conducting plate; 56. Electric heating tube; 57. Air outlet; 58. Second preheating plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0023] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Example 1:

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this embodiment proposes a plastic film heating, stretching, and shaping device, including a base plate 1, a heating and stretching box 2 mounted on the upper surface of the base plate 1, and a winding mechanism 3 disposed on the upper surface of the base plate 1 on one side of the heating and stretching box 2. A preheating mechanism 5 is disposed on one side of the heating and stretching box 2. The preheating mechanism 5 includes a mounting plate 51 snapped onto one side of the heating and stretching box 2. A first preheating plate 54 and a second preheating plate 58 are respectively disposed on one side of the mounting plate 51 from top to bottom. The lower surface of the first preheating plate 54 and the upper surface of the second preheating plate 58 are both provided with Two sets of heat-conducting plates 55 are provided, and the lower surface of the first preheating plate 54 and the upper surface of the second preheating plate 58 are provided with vent holes 57 between the two sets of heat-conducting plates 55. Electric heating tubes 56 are provided inside the first preheating plate 54 and the second preheating plate 58. This arrangement can preheat the plastic film passing through by using the preheating mechanism 5. That is, the heat generated by the electric heating tubes 56 through the vent holes 57 and the heat-conducting plates 55 can achieve the purpose of preheating the plastic film, avoiding the plastic film from directly contacting the heating roller 24 and causing damage or breakage.

[0029] A cooling and shaping box 4 is installed on the upper surface of the heating and stretching box 2. A baffle 44 is installed inside the cooling and shaping box 4, and a second fan 45 is installed behind the baffle 44 inside the cooling and shaping box 4. Two sets of exhaust pipes 46 are symmetrically arranged on the lower surface of the cooling and shaping box 4 inside the heating and stretching box 2. An exhaust hole 461 is opened on the outside of the exhaust pipe 46. This arrangement uses the coolant inside the cooling and shaping box 4 to generate cold air. The operation of the second fan 45 will draw in the cold air and discharge it out through the exhaust hole 461 on the outside of the exhaust pipe 46. This can cool and shape the heated and stretched plastic film, which is practical.

[0030] Example 2:

[0031] The solution in Example 1 will be further described below with reference to its specific working method.

[0032] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the heating and stretching box 2 is further provided with a feed inlet 22 and a discharge outlet 21 on both sides from left to right. A fixing groove 53 communicating with the feed inlet 22 is provided on one side of the mounting plate 51. This arrangement allows the plastic film to be introduced into the heating and stretching box 2 for heating, stretching and shaping by communicating with the feed inlet 22 through the fixing groove 53.

[0033] like Figure 1 and Figure 2As shown, in a preferred embodiment, based on the above method, a positioning pin 52 is symmetrically arranged on one side of the mounting plate 51 near the heating stretching box 2, and a positioning hole is opened on one side of the heating stretching box 2 to engage with the positioning pin 52. This arrangement allows the mounting plate 51 to be installed on one side of the heating stretching box 2 by embedding the positioning pin 52 into the positioning hole.

[0034] like Figure 3 As shown, in a preferred embodiment, based on the above method, a guide roller 23 is further provided inside the heating stretching box 2 near the feed inlet 22, and two sets of heating rollers 24 are symmetrically arranged inside the heating stretching box 2 below the feed inlet 22. This arrangement uses the guide roller 23 to guide the plastic film entering the heating stretching box 2, and the heating rollers 24 to heat the preheated plastic film to facilitate its stretching.

[0035] like Figure 4 As shown, in a preferred embodiment, based on the above method, an air inlet 43 is further provided on the rear surface of the cooling and shaping box 4, and the height of the baffle 44 inside the cooling and shaping box 4 is half the height of the cooling and shaping box 4. This arrangement allows external air to be introduced into the interior of the cooling and shaping box 4 through the air inlet 43, and the baffle 44 can block the coolant inside.

[0036] like Figure 4 As shown, in a preferred embodiment, based on the above method, a semiconductor cooling chip 41 is further provided on the outside of the cooling and shaping box 4, and a first fan 42 is installed on the outside of the semiconductor cooling chip 41. The hot end of the semiconductor cooling chip 41 is located on the outside of the cooling and shaping box 4, and the cold end of the semiconductor cooling chip 41 is located inside the cooling and shaping box 4. This arrangement utilizes the semiconductor cooling chip 41 to cool the coolant inside the cooling and shaping box 4, so as to avoid the temperature of the coolant dropping and affecting the subsequent cooling and shaping work.

[0037] Example 3:

[0038] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0039] Specifically, when this plastic film heating, stretching and shaping equipment is working / using: first, the plastic film that needs to be heated, stretched and shaped is passed through the preheating mechanism 5 and the heating stretching box 2 and wound around the outside of the winding mechanism 3. The winding mechanism 3 can be used to wind up the plastic film. At the same time, when the plastic film passes through the preheating mechanism 5, the electric heating tubes 56 inside the first preheating plate 54 and the second preheating plate 58 are heated by electricity. This allows the electric heating tubes 56 to generate heat, which is discharged outward through the air outlet 57 and conducted out through the heat conduction plate 55 to achieve the purpose of preheating the plastic film.

[0040] After preheating, the plastic film enters the heating and stretching box 2 through the fixing groove 53 and the feed port 22, and is guided by the guide roller 23. It is then heated by the heating roller 24 to achieve the purpose of stretching. After stretching, it is wound up by the winding mechanism 3. When passing between the two exhaust pipes 46, the cool air generated by the coolant inside the cooling and shaping box 4 can be discharged outward through the exhaust hole 461 on the outside of the exhaust pipe 46 when the second fan 45 is working, thus achieving the purpose of cooling and shaping the heated and stretched plastic film. The coolant inside the cooling and shaping box 4 can be cooled by the semiconductor cooling chip 41, so as to achieve the purpose of recycling.

[0041] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A plastic film heating, stretching, and shaping device, comprising a base plate (1), a heating and stretching box (2) mounted on the upper surface of the base plate (1), and a winding mechanism (3) disposed on the upper surface of the base plate (1) on one side of the heating and stretching box (2), characterized in that, A preheating mechanism (5) is provided on one side of the heating stretching box (2). The preheating mechanism (5) includes a mounting plate (51) that is snapped onto one side of the heating stretching box (2). A first preheating plate (54) and a second preheating plate (58) are respectively provided on one side of the mounting plate (51) from top to bottom. Two sets of heat-conducting plates (55) are provided on the lower surface of the first preheating plate (54) and the upper surface of the second preheating plate (58). An air vent (57) is opened between the two sets of heat-conducting plates (55) on the lower surface of the first preheating plate (54) and the upper surface of the second preheating plate (58). An electric heating tube (56) is provided inside the first preheating plate (54) and the second preheating plate (58). A cooling and shaping box (4) is installed on the upper surface of the heating and stretching box (2). A baffle (44) is provided inside the cooling and shaping box (4), and a second fan (45) is installed behind the baffle (44) inside the cooling and shaping box (4). Two sets of exhaust pipes (46) are symmetrically arranged on the lower surface of the cooling and shaping box (4) inside the heating and stretching box (2). An exhaust hole (461) is opened on the outside of the exhaust pipe (46).

2. The apparatus according to claim 1, wherein The heating and stretching box (2) has an inlet (22) and an outlet (21) on both sides from left to right, and a fixing groove (53) that communicates with the inlet (22) is opened on one side of the mounting plate (51).

3. The apparatus according to claim 1, wherein A positioning pin (52) is symmetrically arranged on one side of the mounting plate (51) near the heating stretching box (2), and a positioning hole is opened on one side of the heating stretching box (2) to engage with the positioning pin (52).

4. The apparatus according to claim 1, wherein The heating and stretching box (2) is equipped with a guide roller (23) near the feed inlet (22), and two sets of heating rollers (24) are symmetrically arranged inside the heating and stretching box (2) below the feed inlet (22).

5. The apparatus according to claim 1, wherein The rear surface of the cooling and shaping box (4) is provided with an air inlet (43), and the height of the baffle (44) inside the cooling and shaping box (4) is half the height of the cooling and shaping box (4).

6. The apparatus according to claim 1, wherein A semiconductor cooling chip (41) is provided on the outside of the cooling and shaping box (4), and a first fan (42) is installed on the outside of the semiconductor cooling chip (41) on the outside of the cooling and shaping box (4). The hot end of the semiconductor cooling chip (41) is located on the outside of the cooling and shaping box (4), and the cold end of the semiconductor cooling chip (41) is located inside the cooling and shaping box (4).

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