Hot cutting device for plastic bag production

Abstract

The utility model discloses a hot cutting device for plastic bag production, which comprises a machine frame, an unwinding mechanism is arranged on the outer side of the machine frame, a cutting mechanism is arranged at the top of the machine frame, the cutting mechanism comprises a mounting cross beam, an air cylinder, a connecting seat, a hot cutter, a bottom plate and a supporting seat, and a positioning mechanism is arranged on the outer side of the connecting seat. The positioning mechanism comprises a mounting seat, a sliding column, a spring and a pressing plate; a plastic bag is subjected to hot cutting operation through the cutting mechanism, the plastic bag is subjected to positioning operation through the positioning mechanism, the mounting seat and the sliding column keep elastic sliding under the action of the spring, and after hot cutting operation on the plastic bag is completed, the pressing plate is still in a state of pressing the plastic bag under the action of the spring. According to the plastic bag hot cutting device, the plastic bags can be prevented from being adhered to the hot cutter, the cut plastic bags can be smoothly separated and discharged, the influence on normal processing of the plastic bags is avoided, the efficiency of hot cutting operation is improved, and then the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag production, in particular to a hot cutting device for plastic bag production. Background Art

[0002] Plastic bags are bags made of plastic (commonly used plastics include polypropylene, polyester, nylon, etc.) as the main raw material. They are indispensable items in people's daily lives and are often used to hold other items. They are widely used because of their low price, extremely light weight, large capacity, and easy storage. In the production of plastic bags, a thermal cutting machine is used to cut the plastic bags. The plastic bags themselves are relatively thin. During the thermal cutting process, the melted plastic at the cut is easy to stick to the cutter and move up with the cutter, making it difficult to smoothly separate and unload the cut plastic bags, affecting the normal processing of the plastic bags, reducing the thermal cutting efficiency of the plastic bags, and having poor practicality. To this end, we propose a thermal cutting device for plastic bag production to solve the above problems. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a hot cutting device for producing plastic bags.

[0004] The utility model solves the technical problem through the following technical solutions: comprising a frame, an unwinding mechanism is arranged on the outer side of the frame, a cutting mechanism is arranged on the top of the frame, the cutting mechanism comprises a mounting crossbeam, the mounting crossbeam is fixed to the top of the frame by bolts, a cylinder is fixed to the top of the mounting crossbeam by bolts, a connecting seat is fixed to the bottom of the cylinder by bolts, a hot cutting knife is fixed to the bottom of the connecting seat, a bottom plate is fixed to the side of the frame close to the mounting crossbeam, a supporting seat is fixed to the top of the bottom plate by bolts, and a positioning mechanism is arranged on the outer side of the connecting seat;

[0005] The positioning mechanism includes a mounting seat, which is fixed to the side wall of the connecting seat by bolts. The inner wall of the mounting seat is slidably connected with a plurality of sliding columns, springs are arranged on the outer sides of the plurality of sliding columns, and a pressure plate is fixed to the bottom of the sliding column.

[0006] As a further solution of the utility model: a control console is arranged on one side of the frame.

[0007] As a further solution of the utility model: the unwinding mechanism includes a mounting plate, the mounting plate is fixed to the top of the frame by bolts, the inner wall of the mounting plate is rotatably connected to the unwinding roller, and the inner wall of the mounting plate close to the unwinding roller is rotatably connected to the supporting roller.

[0008] As a further solution of the utility model: the top of the mounting plate is rotatably connected with a rewinding roller.

[0009] As a further solution of the present utility model: A plurality of limiting sliders are fixed on the side wall of the connecting seat, and sliding rails are slidably connected to the inner walls of the plurality of limiting sliders, and the sliding rails are fixedly connected to the machine frame.

[0010] As a further solution of the present utility model: A guiding roller is rotatably connected to one side of the machine frame close to the bottom plate.

[0011] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are:

[0012] 1. By providing a cutting mechanism to perform hot cutting operation on the plastic bag, and a positioning mechanism to perform positioning operation on the plastic bag. Under the action of the spring, the mounting seat and the sliding column maintain elastic sliding. When the hot cutting operation of the plastic bag is completed, under the action of the spring, the pressing plate is still in the state of pressing the plastic bag, which can prevent the plastic bag from adhering to the hot cutting knife, and can smoothly separate and discharge the cut plastic bag, avoiding affecting the normal processing of the plastic bag, improving the efficiency of the hot cutting operation, and thus improving the practicability of the device;

[0013] 2. By providing a unwinding mechanism, fixing the plastic bag raw material roll on the unwinding roller, performing unwinding operation on the plastic bag, passing one end of the plastic bag around the supporting roller to provide raw material supply for the cutting mechanism, and performing stretching operation on the plastic bag through the stretching roller, the wrinkles on the surface of the plastic bag can be removed, ensuring the quality of the cutting and processing of the plastic bag;

[0014] 3. By providing a guiding roller to guide and support the plastic bag, the plastic bag passing through the cutting mechanism can be kept parallel to the supporting seat, facilitating the positioning mechanism to perform positioning operation on the plastic bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shows an isometric structural schematic diagram provided by an embodiment of the present utility model;

[0016] Figure 2 Shows an isometric sectional structural schematic diagram provided by an embodiment of the present utility model;

[0017] Figure 3 Shows the Figure 2 enlarged structural schematic diagram of part A provided by an embodiment of the present utility model;

[0018] Figure 4 Shows a front sectional structural schematic diagram provided by an embodiment of the present utility model;

[0019] Figure 5 Shows the Figure 4 enlarged structural schematic diagram of part B provided by an embodiment of the present utility model;

[0020] Figure 6 Shows a partial structural schematic diagram provided according to an embodiment of the present invention.

[0021] Legend description:

[0022] 100 Frame, 110 Console, 210 Mounting Plate, 220 Unwinding Roller, 230 Support Roller, 240 Winding and Unwinding Roller, 310 Mounting Crossbeam, 320 Cylinder, 330 Connecting Seat, 331 Limit Slide Block, 332 Slide Rail, 340 Hot Knife, 350 Bottom Plate, 360 Support Base, 370 Guide Roller, 410 Mounting Base, 420 Slide Post, 421 Spring, 430 Pressing Plate. Detailed implementation manners

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In the description of the present invention, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] Please refer to Figures 1-6, the present utility model provides a technical solution: including a frame 100, a control console 110 is provided on one side of the frame 100, a unwinding mechanism is provided on the outer side of the frame 100, a cutting mechanism is provided on the top of the frame 100, the cutting mechanism includes a mounting crossbeam 310, a cylinder 320, a connecting seat 330, a hot cutting knife 340, a bottom plate 350 and a support seat 360, a positioning mechanism is provided on the outer side of the connecting seat 330, and the positioning mechanism includes a mounting seat 410, a sliding column 420, a spring 421 and a pressing plate 430; the plastic bag is hot cut by the cutting mechanism, and the plastic bag is positioned by the positioning mechanism. Under the action of the spring 421, the mounting seat 410 and the sliding column 420 are elastically slid. When the hot cutting operation of the plastic bag is completed, the pressing plate 430 is still in the pressing state of the plastic bag under the action of the spring 421, which can prevent the plastic bag from adhering to the hot cutting knife 340, and can smoothly separate and discharge the cut plastic bag, avoiding affecting the normal processing of the plastic bag, improving the efficiency of the hot cutting operation, and thus improving the practicability of the device.

[0027] Specifically, the unwinding mechanism includes a mounting plate 210, the mounting plate 210 is fixed to the top of the frame 100 by bolts, a unwinding roller 220 is rotatably connected to the inner wall of the mounting plate 210, a support roller 230 is rotatably connected to the inner wall of the mounting plate 210 near the unwinding roller 220, and a winding and unwinding roller 240 is rotatably connected to the top of the mounting plate 210; by providing the unwinding mechanism, the plastic bag raw material roll is fixed on the unwinding roller 220, the plastic bag is unwound, one end of the plastic bag is wound around the support roller 230 to provide raw material supply for the cutting mechanism, and the plastic bag is stretched by the winding and unwinding roller 240, which can remove the wrinkles on the surface of the plastic bag and ensure the quality of the cutting and processing of the plastic bag.

[0028] Specifically, a plurality of limit sliders 331 are fixed to the side wall of the connecting seat 330, and slide rails 332 are slidably connected to the inner walls of the plurality of limit sliders 331, and the slide rails 332 are fixedly connected to the frame 100; by providing the sliding connection between the limit sliders 331 and the slide rails 332 to limit the movement of the connecting seat 330, preventing the connecting seat 330 from shifting when moving up and down, and ensuring the stability of the cutting operation.

[0029] Specifically, a guide roller 370 is rotatably connected to one side of the frame 100 near the bottom plate 350; by providing the guide roller 370 to guide and support the plastic bag, the plastic bag passing through the cutting mechanism can be kept parallel to the support seat 360, facilitating the positioning operation of the positioning mechanism on the plastic bag.

[0030] Working principle: When in use, the operation of the device is controlled through the console 110. The plastic bag raw material roll is fixed on the unwinding roller 220, and the unwinding operation of the plastic bag is carried out. One end of the plastic bag is wound around the support roller 230 to provide raw material supply for the cutting mechanism. The unwinding and winding roller 240 performs the unwinding operation on the plastic bag, which can remove the wrinkles on the surface of the plastic bag. The guiding roller 370 provides guiding support for the plastic bag, enabling the plastic bag passing through the cutting mechanism to be parallel to the support seat 360, facilitating the positioning operation of the positioning mechanism on the plastic bag. The air cylinder 320 is started, and the air cylinder 320 drives the connecting seat 330 and the hot cutting knife 340 to move downward. The hot cutting knife 340 cooperates with the support seat 360 to perform hot cutting on the plastic bag. The downward movement of the connecting seat 330 drives the mounting seat 410 to move, and then drives the pressing plate 430 to move downward. The position of the pressing plate 430 is lower than that of the hot cutting knife 340. The pressing plate 430 first contacts the plastic bag and presses it on the bottom plate 350, which can perform the positioning operation on the plastic bag. Under the action of the spring 421, the mounting seat 410 elastically slides with the sliding column 420. When the hot cutting operation on the plastic bag is completed, when the hot cutting knife 340 leaves the plastic bag, under the action of the spring 421, the pressing plate 430 is still in the state of pressing the plastic bag, which can prevent the plastic bag from adhering to the hot cutting knife 340 and can smoothly separate and discharge the cut plastic bag.

[0031] Although the embodiments and drawings of the present utility model are disclosed, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present utility model and the appended claims. Therefore, the scope of the present utility model is not limited to the content disclosed in the embodiments and drawings.

Claims

1. A hot cutting device for plastic bag production, characterized in that: It includes a frame (100), a unwinding mechanism is arranged on the outer side of the frame (100), a cutting mechanism is arranged on the top of the frame (100), the cutting mechanism includes a mounting cross beam (310), the mounting cross beam (310) is fixed to the top of the frame (100) by bolts, a cylinder (320) is fixed to the top of the mounting cross beam (310) by bolts, a connecting seat (330) is fixed to the bottom of the cylinder (320) by bolts, a hot cutting knife (340) is fixed to the bottom of the connecting seat (330), a bottom plate (350) is fixed to one side of the frame (100) close to the mounting cross beam (310), a support seat (360) is fixed to the top of the bottom plate (350) by bolts, and a positioning mechanism is arranged on the outer side of the connecting seat (330); The positioning mechanism includes a mounting seat (410), the mounting seat (410) is fixed to the side wall of the connecting seat (330) by bolts, a plurality of sliding columns (420) are slidably connected to the inner wall of the mounting seat (410), springs (421) are arranged on the outer sides of the plurality of sliding columns (420), and a pressing plate (430) is fixed to the bottom of the sliding column (420).

2. A hot cutting device for producing plastic bags according to claim 1, characterized in that: A control console (110) is arranged on one side of the frame (100).

3. A hot cutting device for plastic bag production according to claim 1, characterized in that: The unwinding mechanism includes a mounting plate (210), the mounting plate (210) is fixed to the top of the frame (100) by bolts, an unwinding roller (220) is rotatably connected to the inner wall of the mounting plate (210), and a support roller (230) is rotatably connected to the inner wall of the mounting plate (210) close to the unwinding roller (220).

4. A hot cutting device for plastic bag production according to claim 3, characterized in that: A winding and unwinding roller (240) is rotatably connected to the top of the mounting plate (210).

5. A hot cutting device for producing plastic bags according to claim 1, characterized in that: A plurality of limiting sliders (331) are fixed to the side wall of the connecting seat (330), a slide rail (332) is slidably connected to the inner walls of the plurality of limiting sliders (331), and the slide rail (332) is fixedly connected to the frame (100).

6. A hot cutting device for producing plastic bags according to claim 5, characterized in that: A guiding roller (370) is rotatably connected to one side of the frame (100) close to the bottom plate (350).

Images