A cutting device for plastic film production

Abstract

This utility model relates to a cutting device for plastic film production, belonging to the field of plastic film production and processing technology. The cutting device includes a machine body, a guide shaft rotatably connected to the inner side of the machine body, a pressing assembly located in the middle of the inner side of the machine body, a rotating shaft rotatably connected to one side of the inner wall of the machine body, a bushing fixedly connected to the outer side of the rotating shaft, and an air shaft rotatably connected to the inner side of the bushing and detachably connected to one side of the inner wall of the machine body. A centering assembly is located on the inner wall of one side of the input end of the machine body. During cutting, this utility model allows for real-time dust cleaning, preventing plastic dust from accumulating on the blade surface and preventing contamination of the plastic film during processing, directly improving product quality. The linkage structure of the L-shaped baffle does not affect the cutting action and can isolate the suction of the industrial vacuum cleaner, ensuring the stability of the plastic film conveying.

Description

Technical Field

[0001] This utility model belongs to the field of plastic film production and processing technology, and specifically relates to a cutting device for plastic film production. 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. Plastic packaging and plastic packaging products are taking up an increasingly larger share of the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. Among them, food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, retortable food packaging, fast food packaging, etc. These products have brought great convenience to people's lives.

[0003] For example, in the Chinese utility model with announcement number CN221459313U, entitled "A Slitting Device for Plastic Film Production", a machine body is included. The outer wall surface of the machine body is equipped with a support arm for auxiliary support, and there are two sets of support arms. The top surface of the support arm is equipped with a support rod for auxiliary support. The above-mentioned prior art reduces the looseness of plastic film when it is rolled up, and facilitates stable cutting and winding. However, during long-term cutting, white plastic dust will adhere to the surface of the blade, reducing the production quality of plastic film. Therefore, there is a need for a cutting device for plastic film production. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reasonably designed cutting device for plastic film production in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A cutting device for producing plastic film includes a machine body. A guide shaft is rotatably connected to the inner side of the machine body. A pressing assembly is disposed in the middle of the inner side of the machine body. A rotating shaft is rotatably connected to one inner wall of the machine body. A bushing is fixedly connected to the outer side of the rotating shaft. An air shaft is rotatably connected to the inner side of the bushing. The end of the air shaft away from the bushing is detachably connected to one inner wall of the machine body. A centering assembly is disposed on one inner wall of the machine body at the input end. A dust suction assembly is disposed on one inner wall of the machine body at the output end. A support platform is fixedly connected to the inner side of the machine body. A connecting frame is fixedly connected to the bottom of the support platform. A guide plate is fixedly connected to one side of the connecting frame.

[0007] As a further optimization of this utility model, the pressing assembly includes a fixed rod fixed to the upper middle part of the inner side of the machine body, a sliding shaft slidably connected to the inner walls of both sides of the fixed rod, a limit plate fixedly connected to the top of the sliding shaft, a pressing support rod fixedly connected to the bottom of each of the two sliding shafts, a pressing spring sleeved on the outer side of the sliding shaft, the two ends of the pressing spring abutting against the bottom of the fixed rod and the top of the pressing support rod, a pressing roller rotatably connected between the two pressing support rods, a transmission roller rotatably connected to the bottom of the pressing roller abutting against the lower middle part of the inner side of the machine body, and a servo motor fixedly connected to one end of the transmission roller fixedly installed on the outside of one side of the machine body.

[0008] As a further optimization of this utility model, the centering component includes a stepper motor fixedly connected to the outside of one side of the machine body, a bidirectional lead screw fixedly connected to the middle of one side of the output end of the stepper motor, a guide bar fixedly connected to the lower part of one side of the input end of the machine body, and a U-shaped sliding plate threadedly connected to the outside of the bidirectional lead screw is slidably provided on the outside of the guide bar.

[0009] As a further optimization of this utility model, the dust collection assembly includes a fixed rod two fixedly connected to the upper part of one side of the output end of the machine body. A cylinder is fixedly installed in the middle of the bottom of the fixed rod two. A blade holder is fixedly connected to the output end of the cylinder. A blade is fixedly installed at the bottom of the blade holder. Push rods are fixedly connected to both ends of the bottom of the blade holder.

[0010] As a further optimization of this utility model, a fixed shaft is fixedly connected to the lower part of one side of the output end of the machine body. Torsion springs are sleeved on both ends of the fixed shaft. One end of the torsion spring is fixedly set on the inner top of the support platform, and the other end of the torsion spring is fixedly set with an L-shaped baffle that abuts against the bottom sides of the push rod. The middle part of the L-shaped baffle is rotatably connected to the middle part of the fixed shaft.

[0011] As a further optimization of this utility model, a strip suction head is fixedly provided on the other side of the connecting frame, and the strip suction head is connected to an industrial vacuum cleaner through a pipe.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. During the cutting process, the real-time dust cleaning of this utility model can prevent plastic dust from accumulating on the surface of the blade, prevent contamination of the plastic film during processing, and directly improve product quality. The linkage structure of the L-shaped baffle does not affect the cutting action and can isolate the suction of the industrial vacuum cleaner, ensuring the stability of the plastic film conveying.

[0014] 2. This utility model ensures that the material roll is aligned with the central axis through the centering component, avoiding conveying deviation and greatly improving cutting consistency. The air expansion fixing and spring compression design reduce material roll wear, which not only ensures the quality of finished products, but also reduces equipment failures such as material jamming and extends the service life of components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the other side of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the bushing of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the support platform of this utility model;

[0019] Figure 5 This is a partial exploded view of the dust collection component of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the dust collection component of this utility model;

[0021] Figure 7 This is a utility model Figure 6 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Machine body; 2. Guide shaft; 3. Pressing assembly; 301. Fixed rod one; 302. Sliding shaft; 303. Pressing spring; 304. Pressing support rod; 305. Pressing roller; 306. Transmission roller; 307. Servo motor; 4. Bushing; 5. Rotating shaft; 6. Air shaft; 7. Centering assembly; 701. Stepper motor; 702. Two-way lead screw; 703. U-shaped sliding plate; 704. Guide bar; 8. Dust collection assembly; 801. Fixed rod two; 802. Cylinder; 803. Tool holder; 804. Tool; 805. Push rod; 806. L-shaped baffle; 807. Fixed shaft; 808. Torsion spring; 809. Strip dust collection head; 810. Industrial vacuum cleaner; 9. Support platform; 10. Connecting frame; 11. Guide plate. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Example 1

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 5As shown, a cutting device for plastic film production includes a body 1, which provides mounting support for various components to ensure overall structural stability. A guide shaft 2 is rotatably connected to the inner side of the body 1, and the guide shaft 2 can rotate around its own axis to guide and convey the plastic film. A rotating shaft 5 is rotatably connected to one inner wall of the body 1, and the rotating shaft 5 can rotate around the inner wall of the body 1 to provide rotational support for a bushing 4. A bushing 4 is fixedly connected to the outer side of the rotating shaft 5, and the bushing 4 can rotate synchronously with the rotating shaft 5 to drive an air-expanding shaft 6 to rotate out or return to its original position. An air-expanding shaft 6 is rotatably connected to the inner side of the bushing 4, and the air-expanding shaft 6 is inflated... The air-supported material roll is fixed by air. The end of the air shaft 6 away from the bushing 4 is detached and connected to the inner wall of one side of the machine body 1. The detached connection of one end of the air shaft 6 makes it easy for the operator to unlock and rotate or reset and fix it. A support platform 9 is fixedly connected to the inner side of the machine body 1. The support platform 9 provides a conveying support surface for the plastic film and provides an installation base for other components. A connecting frame 10 is fixedly connected to the bottom of the support platform 9. The connecting frame 10 provides a fixed installation position for the line dust suction head 809. A guide plate 11 is fixedly connected to one side of the connecting frame 10. The guide plate 11 can guide the cut plastic film to be output smoothly and avoid accumulation.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, a pressing assembly 3 is provided in the middle of the inner side of the machine body 1. The pressing assembly 3 can press the plastic film onto the conveying roller 306 to ensure stable conveying. The pressing assembly 3 includes a fixing rod 301, which provides a sliding mounting track for the sliding shaft 302. The two ends of the fixing rod 301 are fixedly connected to the inner side of the machine body 1. The fixing of the two ends of the fixing rod 301 stabilizes its position and provides support for other components. The sliding shaft 302 is slidably connected to the inner walls on both sides of the fixing rod 301. A limit plate is fixedly connected to the top of the sliding shaft 302 to ensure that the sliding shaft 302 will not come out of the inner side of the fixing rod 301. The sliding shaft 302 can slide up and down along the inner wall of the fixed rod 301 to drive the pressing support rod 304 to move. The bottom of both sliding shafts 302 are fixedly connected to the pressing support rod 304. The pressing support rod 304 can move with the sliding shaft 302 and provide rotational support for the pressing roller 305. The outer side of the sliding shaft 302 is fitted with a pressing spring 303. The pressing spring 303 can apply a downward elastic force to the sliding shaft 302 through elastic deformation. The two ends of the pressing spring 303 abut against the bottom of the fixed rod 301 and the top of the pressing support rod 304. The abutment of the two ends of the pressing spring 303 realizes the transmission of elastic force to push the pressing support rod 304 downward.

[0027] like Figure 3 , Figure 4As shown, a pressing roller 305 is rotatably connected between two pressing support rods 304. The pressing roller 305 can rotate around the pressing support rods 304 and synchronously drive the plastic film forward with the transmission roller 306. The transmission roller 306 is rotatably connected to the lower inner side of the machine body 1. The transmission roller 306 can rotate around the inner wall of the machine body 1 to provide power for conveying the plastic film. The bottom of the pressing roller 305 abuts against the top of the transmission roller 306. The pressing roller 305 and the transmission roller 306 abut against each other to form a clamping structure to prevent the plastic film from shifting. A servo motor 307 is fixedly installed on the outside of one side of the machine body 1. In this utility model, the servo motor 307 adopts the Schneider ILA1R571 PC1F0 integrated servo motor, which can be replaced according to the actual situation. The servo motor 307 can provide stable power to control the rotation speed of the transmission roller 306. The output end of the servo motor 307 is fixedly connected to one end of the transmission roller 306. The fixed connection between the output end of the servo motor 307 and the transmission roller 306 realizes direct power transmission and ensures smooth rotation.

[0028] like Figure 2 , Figure 3 As shown, a centering component 7 is provided on the inner wall of one side of the input end of the machine body 1. The centering component 7 can adjust the position of the material roll to align the material roll with the central axis, improving cutting consistency. The centering component 7 includes a stepper motor 701. In this utility model, the stepper motor 701 is a Bohong 86 stepper motor, which can be replaced according to the actual situation. The stepper motor 701 can provide driving force to drive the bidirectional lead screw 702 to rotate. The outer side of the stepper motor 701 is fixedly installed on the outside of one side of the machine body 1. The fixed outer side of the stepper motor 701 ensures that its position is fixed and the driving is stable. The bidirectional lead screw 702 is fixedly connected to the middle of one side of the output end of the stepper motor 701. The bidirectional lead screw 702 can be driven by the stepper motor 701. The rotating motion drives the U-shaped slide plate 703 to move. A guide bar 704 is fixedly connected to the lower part of the input end of the machine body 1. The guide bar 704 provides sliding guidance for the U-shaped slide plate 703 to prevent deviation. The U-shaped slide plate 703 is slidably arranged on the outer side of the guide bar 704. When the air shaft 6 is fixed, it is located in the groove of the U-shaped slide plate 703. The groove provides space for the air shaft 6 to expand and provides space for the air shaft 6 to slide out when it rotates out. The U-shaped slide plate 703 can slide along the guide bar 704 to push the material roll to the middle of the device. The inner side of the U-shaped slide plate 703 is threaded to the outer side of the double-acting screw 702. The threaded connection between the U-shaped slide plate 703 and the double-acting screw 702 converts the rotational motion into linear sliding.

[0029] like Figure 1 , Figure 6 , Figure 7As shown, a dust collection component 8 is provided on the inner wall of one side of the output end of the machine body 1. The dust collection component 8 can suck up the plastic dust generated during cutting to prevent contamination of the film. The dust collection component 8 includes a second fixing rod 801, which provides a fixed mounting support for the cylinder 802. The two ends of the second fixing rod 801 are fixedly connected to the upper part of one side of the output end of the machine body 1. The two ends of the second fixing rod 801 are fixed to ensure its stability and the stability of subsequent components. A cylinder 802 is fixedly installed in the middle of the bottom of the second fixing rod 801. The cylinder 802 can provide direct... The linear drive force drives the tool holder 803 to slide up and down. The output end of the cylinder 802 is fixedly connected to the tool holder 803. The tool holder 803 can move with the output end of the cylinder 802 and provides mounting support for the tool 804 and the push rod 805. The tool 804 is fixedly installed at the bottom of the tool holder 803. When the tool 804 slides down with the tool holder 803, it can cut the plastic film to complete the cutting. The two ends of the bottom of the tool holder 803 are fixedly connected to the push rod 805. When the push rod 805 moves down with the tool holder 803, it can push open the L-shaped baffle 806.

[0030] like Figure 5 , Figure 6 , Figure 7 As shown, a fixed shaft 807 is fixedly connected to the lower part of one side of the output end of the machine body 1. The fixed shaft 807 provides a mounting position for the torsion spring 808. The torsion spring 808 is sleeved on both ends of the fixed shaft 807. When the torsion spring 808 is compressed, it stores elastic potential energy and can drive the L-shaped baffle 806 to reset. One end of the torsion spring 808 is fixedly set on the inner top of the support platform 9. Fixing one end of the torsion spring 808 stabilizes its position and ensures the reset effect. The other end of the torsion spring 808 is fixedly set with the L-shaped baffle 806. When the L-shaped baffle 806 resets, it can isolate the suction of the industrial vacuum cleaner 810 to avoid affecting the membrane. The bottom of the push rod 805 abuts against the top two sides of the L-shaped baffle 806. The bottom abutment of the push rod 805 can effectively push the L-shaped baffle 806 to rotate and open. The middle part of the L-shaped baffle 806 is rotatably connected to the middle part of the fixed shaft 807. The fixed shaft 807 provides a rotation base for the L-shaped baffle 806. A strip suction head 809 is fixedly installed on the other side of the connecting frame 10. The strip suction head 809 can accurately aim at the cutter 804 to suck up plastic dust. The strip suction head 809 is connected to an industrial vacuum cleaner 810 through a pipe. The industrial vacuum cleaner 810 can provide suction to enable the strip suction head 809 to effectively collect dust.

[0031] It should be noted that, in operation, this cutting equipment for plastic film production involves the operator unlocking one end of the air shaft 6 from the inside of the machine body 1, rotating it around the rotating shaft 5 to exit the inside of the machine body 1, then placing the material roll onto the air shaft 6, and finally resetting and fixing it. At this point, the stepper motor 701 is started, driving the bidirectional lead screw 702 to rotate, causing the U-shaped sliding plates 703 at both ends to move closer together, allowing the material roll to slide onto the air shaft 6 to the center of the device. The air shaft 6 is then inflated, fixing the material roll onto it. Subsequently, the U-shaped sliding plates 703 are reset, aligning the material roll with the central axis of the device, improving conveying stability and cutting consistency, and ensuring the quality of the finished product. This design further reduces equipment failure rate and extends service life. One end of the material roll passes through the bottom of the guide shaft 2, the middle of the pressure roller 305 and the transmission roller 306, until it passes below the cutter 804 on the surface of the support platform 9. The pressure roller 305 presses the plastic mold between itself and the transmission roller 306 through the pressure spring 303. The servo motor 307 drives the transmission roller 306 to rotate, which in turn drives the pressure roller 305 to rotate synchronously, allowing the plastic film to move forward. The centering component 7 ensures that the material roll is aligned with the central axis, avoiding conveying deviation and greatly improving cutting consistency. The air expansion fixing and spring pressing design reduce material roll wear, ensuring finished product quality, reducing equipment jamming and other failures, and extending the service life of components.

[0032] During cutting, cylinder 802 drives the blade 804 and push rod 805 on the blade holder 803 to slide downwards. The bottom of push rod 805 first pushes open the L-shaped baffle 806, while the torsion spring 808 is compressed. Then, blade 804 cuts the plastic film. When blade 804 passes through to the front of the connecting frame 10 fixed at the bottom of the support platform 9, the strip suction head 809 fixed at the rear of the connecting frame 10 sucks up the white plastic dust generated by cutting the surface of blade 804. When blade 804 returns to its original position, the torsion spring 808 drives the L-shaped baffle 806 to slide downwards. The L-shaped baffle 806 resets, preventing the plastic film from being affected by the suction of the industrial vacuum cleaner 810. This cleans the cutting tool 804, avoiding contamination of the plastic film by white plastic dust during prolonged processing, thus improving the quality of the produced plastic film. Real-time dust cleaning prevents plastic dust from accumulating on the surface of the cutting tool 804, preventing contamination of the plastic film during processing and directly improving product quality. The linkage structure of the L-shaped baffle 806 does not affect the cutting action and can isolate the suction of the industrial vacuum cleaner 810, ensuring the stability of the plastic film conveying.

[0033] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A cutting device for plastic film production, comprising a machine body (1), characterized in that, A guide shaft (2) is rotatably connected to the inner side of the machine body (1). A pressing assembly (3) is provided in the middle of the inner side of the machine body (1). A rotating shaft (5) is rotatably connected to one side of the inner wall of the machine body (1). A bushing (4) is fixedly connected to the outer side of the rotating shaft (5). An air shaft (6) is rotatably connected to the inner side of the bushing (4). The end of the air shaft (6) away from the bushing (4) is detachably connected to one side of the inner wall of the machine body (1). A centering assembly (7) is provided on one side of the inner wall of the input end of the machine body (1). A dust suction assembly (8) is provided on one side of the inner wall of the output end of the machine body (1). A support platform (9) is fixedly connected to the inner side of the machine body (1). A connecting frame (10) is fixedly connected to the bottom of the support platform (9). A guide plate (11) is fixedly connected to one side of the connecting frame (10).

2. The cutting equipment for plastic film production according to claim 1, characterized in that: The pressing assembly (3) includes a fixed rod (301) fixed in the upper middle part of the inner side of the machine body (1). The inner walls of the two sides of the fixed rod (301) are slidably connected to the sliding shaft (302). The top of the sliding shaft (302) is fixedly connected to the limit plate. The bottom of the two sliding shafts (302) is fixedly connected to the pressing support rod (304). The outer side of the sliding shaft (302) is fitted with a pressing spring (303). The two ends of the pressing spring (303) abut against the bottom of the fixed rod (301) and the top of the pressing support rod (304). The two pressing support rods (304) are rotatably connected to a pressing roller (305). The lower middle part of the inner side of the machine body (1) is rotatably connected to a transmission roller (306) that abuts against the bottom of the pressing roller (305). A servo motor (307) is fixedly connected to one end of the transmission roller (306) on one side of the machine body (1).

3. The cutting equipment for plastic film production according to claim 1, characterized in that: The centering component (7) includes a stepper motor (701) fixedly connected to the outside of one side of the body (1). A bidirectional lead screw (702) is fixedly connected to the middle of one side of the output end of the stepper motor (701). A guide bar (704) is fixedly connected to the lower part of one side of the input end of the body (1). A U-shaped sliding plate (703) threadedly connected to the outside of the bidirectional lead screw (702) is slidably provided on the outside of the guide bar (704).

4. A cutting device for plastic film production according to claim 1, characterized in that: The dust collection assembly (8) includes a fixed rod two (801) fixedly connected to the upper part of the output end of the body (1). A cylinder (802) is fixedly installed in the middle of the bottom of the fixed rod two (801). A blade holder (803) is fixedly connected to the output end of the cylinder (802). A blade (804) is fixedly installed at the bottom of the blade holder (803). Push rods (805) are fixedly connected to both ends of the bottom of the blade holder (803).

5. A cutting device for plastic film production according to claim 4, characterized in that: A fixed shaft (807) is fixedly connected to the lower part of the output end of the machine body (1). Torsion springs (808) are sleeved on both ends of the fixed shaft (807). One end of the torsion spring (808) is fixedly installed on the inner top of the support platform (9). The other end of the torsion spring (808) is fixedly installed with an L-shaped baffle (806) that abuts against the bottom sides of the push rod (805). The middle part of the L-shaped baffle (806) is rotatably connected to the middle part of the fixed shaft (807).

6. A cutting device for plastic film production according to claim 5, characterized in that: A strip vacuum head (809) is fixedly installed on the other side of the connecting frame (10), and the strip vacuum head (809) is connected to an industrial vacuum cleaner (810) through a pipe.

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