A cutting device for a transparent film three-servo packaging machine

Abstract

The application relates to the technical field of packaging machines, in particular to a cutting device of a transparent film three-servo packaging machine, which comprises a bottom frame, an arch-shaped frame is arranged at the middle position of the top of the bottom frame, a fixed plate is fixedly arranged at one end of the top of the arch-shaped frame, a rotating shaft is rotatably inserted into one end of the top of the fixed plate, a first straight gear is fixedly sleeved with the outer side of one end of the rotating shaft, a tooth groove plate is arranged on the bottom of the outer circumferential surface of the first straight gear through gear meshing, and a hydraulic rod is fixedly arranged at one end of the tooth groove plate through a backing plate. When the cutting device is used for cutting, the two sides of the transparent film cutting edge are fixed through the two groups of pressing plates and the moving vertical plates and the like, the film deviation caused by the conveying tension fluctuation, the equipment vibration or the cutting impact force is avoided, the cutting knife can be vertically cut into the film in the fixed state, the burr, the sawtooth or the tearing caused by the film sliding is avoided, the material waste can be greatly reduced, and the production cost saving effect is achieved.

Description

Technical Field

[0001] This application relates to the technical field of packaging machines, and in particular to a cutting device for a transparent film three-servo packaging machine. Background Technology

[0002] The transparent film three-servo packaging machine is an advanced packaging equipment. It uses a servo motor to precisely control the unwinding and conveying of the film. It can accurately adjust the length and tension of the film according to packaging needs, ensuring a stable and accurate film supply. It uses a conveyor belt or other conveying device to transport the items to be packaged to the packaging position. The conveying speed can be matched with the film supply speed to ensure the continuity of the packaging process. It can precisely control the movement speed and position of the cutting blade to achieve high-speed and accurate cutting.

[0003] Regarding the aforementioned technologies, the inventors have discovered the following defects: existing cutting devices are prone to damaging the transparent film itself during use. When cutting the transparent film, the transparent film is not effectively fixed, and it is prone to lateral or longitudinal displacement under the action of conveying tension, cutting blade impact force or equipment vibration. The film may experience local wrinkles or slippage due to uneven force, causing the blade to be unable to cut perpendicularly into the film, resulting in burrs, serrated edges or tears. Utility Model Content

[0004] In order to solve the problems mentioned in the background art, this application provides a cutting device for a transparent film three-servo packaging machine.

[0005] This application provides a cutting device for a transparent film three-servo packaging machine, which adopts the following technical solution: it includes a bottom frame, an arched frame is set at the middle position of the top of the bottom frame, a fixed plate is fixedly set at one end of the top of the arched frame, a rotating shaft is rotatably inserted at one end of the top of the fixed plate, a first spur gear is fixedly sleeved on the outer side of one end of the rotating shaft, a toothed plate is set by the teeth of the first spur gear through the teeth at the bottom of the outer circumference, a hydraulic rod is fixedly set at one end of the toothed plate through a pad, and one end of the hydraulic rod is fixedly set at the top of the arched frame through a vertical plate.

[0006] A second spur gear is fixedly sleeved in the middle of the rotating shaft. A third spur gear is provided through the teeth of the second spur gear on one side of its outer circumference. A rectangular toothed plate is provided through the teeth of the third spur gear on the side of its outer circumference away from the second spur gear. A tool frame is fixedly provided at the bottom of the rectangular toothed plate. A cutting blade is snapped into the bottom of the tool frame.

[0007] Optionally, a conveyor belt is rotatably installed in the middle of the bottom frame, and the surface of the conveyor belt is provided with an anti-slip buffer layer. Fixed extension plates are fixedly installed at both ends of the bottom of the bottom frame. The fixed extension plates are set in an "L" shape and fixed holes are provided at the bottom of the fixed extension plates.

[0008] Optionally, the width of the toothed plate is the same as the width of the first spur gear, and the bottom of the toothed plate is slidably connected to the upper surface of the arched frame.

[0009] Optionally, a crossbar is fixedly inserted into the middle of the third spur gear, and the two ends of the crossbar are rotatably set at one end of the top of the fixed plate.

[0010] Optionally, a groove is fixedly provided in the middle of the rectangular toothed plate, and a crossbar is slidably inserted in the middle of the groove. The two ends of the crossbar are fixedly provided at the top of the inner side of the two arched frames.

[0011] Optionally, an inclined rectangular plate is fixedly installed at the top of the tool frame away from the rectangular toothed plate. The inclined rectangular plate has the same specifications as the rectangular toothed plate. Connecting horizontal plates are installed at the top of both ends of the tool frame via bolt rods. The inner sides of both ends of the connecting horizontal plates are respectively inserted into the outer sides of the top of the two movable vertical plates.

[0012] Optionally, the two ends of the top of the outer side of the arched frame are fixedly provided with limiting vertical rods by connecting plates. A sliding plate is slidably sleeved on the outer side of the middle of the limiting vertical rod. A movable vertical plate is fixedly provided on one side of the sliding plate. One end of the top of the pressure plate is fixedly provided at the bottom of the movable vertical plate. There are two pressure plates, and the two pressure plates are located on the outer side of the two arched frames.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model, by setting up two sets of pressure plates and movable vertical plates, fixes both sides of the transparent film blade during the lifting and cutting process, avoiding film offset caused by conveying tension fluctuations, equipment vibration, or cutting impact. In the fixed state, the cutting blade can cut vertically into the film, avoiding burrs, serrations, or tears caused by film slippage, which can significantly reduce material waste and save production costs.

[0015] 2. This utility model can improve the stability of equipment operation and reduce the risk of failure. Fixing the film can make the cutting blade bear force evenly, avoiding the blade from cracking or dulling due to the lateral force generated by the film sliding. After the film is fixed, it is not easy to get caught in the transmission components (such as rollers and belts), reducing equipment downtime caused by entanglement. The fixing device can make the cutting quality stable for a long time, and the operator does not need to stop the machine frequently for calibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure in the embodiments of this application;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the gear meshing with the rectangular tooth plate in an embodiment of this application;

[0018] Figure 3This is a three-dimensional structural diagram of the conveyor belt in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the left side structure in an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the front structure in an embodiment of this application.

[0021] Reference numerals: 1. Bottom frame; 2. Connecting horizontal plate; 3. Arched frame; 4. Hydraulic rod; 5. Toothed plate; 6. First spur gear; 7. Second spur gear; 8. Third spur gear; 9. Rectangular toothed plate; 10. Rotating shaft; 11. Fixed plate; 12. Moving vertical plate; 13. Conveyor belt; 14. Limiting vertical rod; 15. Fixed extension plate; 16. Pressure plate; 17. Cutting blade plate; 18. Tool frame. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] This application discloses a cutting device for a transparent film three-servo packaging machine. For example... Figure 1 As shown, the device includes a bottom frame 1, with a conveyor belt 13 rotatably mounted in the middle of the bottom frame 1. The surface of the conveyor belt 13 is provided with an anti-slip buffer layer. Fixed extension plates 15 are fixedly mounted at both ends of the bottom of the bottom frame 1. The fixed extension plates 15 are L-shaped and have fixing holes at their bottoms. The bottom frame 1 serves as the basic support structure for the entire cutting device and can withstand various loads and vibrations during equipment operation. The conveyor belt 13 rotates through the cooperation of a drive roller and a driven roller. The drive roller is driven by a servo motor, which can precisely control the running speed of the conveyor belt to match the working rhythm of the cutting device. The anti-slip buffer layer is made of a special rubber material with an uneven texture on the surface, which increases the friction between the transparent film and the film, effectively preventing the transparent film from slipping during transport. At the same time, the anti-slip buffer layer has a certain degree of elasticity, which can buffer the impact force on the transparent film during transport and protect the surface quality of the transparent film.

[0024] Please see Figure 2An arched frame 3 is provided at the middle of the top of the bottom frame 1. Limiting vertical rods 14 are fixed to the two ends of the top of the outer side of the arched frame 3 through connecting plates. The limiting vertical rods 14 limit the movement direction of the moving vertical plate 12. A sliding plate is slidably sleeved on the outer side of the middle of the limiting vertical rod 14. The moving vertical plate 12 is fixedly provided on one side of the sliding plate. One end of the top of the pressure plate 16 is fixedly provided at the bottom of the moving vertical plate 12. There are two pressure plates 16. The two pressure plates 16 are located on the outer side of the two arched frames 3. The two pressure plates 16 are symmetrically arranged on the outer side of the arched frames 3. They are made of rubber material with a soft texture on the surface. They can reliably press the transparent film without damaging it, prevent the transparent film from shifting during the cutting process, and ensure the accuracy and quality of the cutting.

[0025] Please see Figure 1 A fixing plate 11 is fixedly installed at one end of the top of the arched frame 3. A rotating shaft 10 is rotatably inserted into one end of the top of the fixing plate 11. A first spur gear 6 is fixedly sleeved on the outer side of one end of the rotating shaft 10. A toothed plate 5 is provided for the first spur gear 6 through the teeth of the bottom of the outer circumference surface. The width of the toothed plate 5 is the same as the width of the first spur gear 6. The bottom of the toothed plate 5 is slidably connected to the upper surface of the arched frame 3. The design that the toothed plate 5 and the first spur gear 6 have the same width ensures that the meshing between the two is tighter and more stable, which can transmit greater torque and reduce lateral force and shaking during transmission. A hydraulic rod 4 is fixedly installed at one end of the toothed plate 5 through a pad. One end of the hydraulic rod 4 is fixedly installed at the top of the arched frame 3 through a vertical plate.

[0026] Please see Figure 2 A second spur gear 7 is fixedly sleeved in the middle of the rotating shaft 10. A third spur gear 8 is set in the second spur gear 7 through the teeth on one side of its outer circumference. A crossbar is fixedly inserted in the middle of the third spur gear 8. The two ends of the crossbar are rotatably set at one end of the top of the fixed plate 11. The crossbar tightly supports the third spur gear 8 to ensure that it can rotate smoothly. A rectangular toothed plate 9 is set in the teeth on the side of the outer circumference of the third spur gear 8 away from the second spur gear 7. A groove is fixedly set in the middle of the rectangular toothed plate 9. A crossbar is slidably inserted in the middle of the groove. The two ends of the crossbar are fixedly set at the top of the inner side of the two arched frames 3. When the third spur gear 8 rotates, it drives the rectangular toothed plate 9 to move to one side. Due to the action of the groove in the middle of the rectangular toothed plate 9 and the crossbar, the rectangular toothed plate 9 can only move in one direction, thereby driving the cutter below to rise and fall to cut the transparent film.

[0027] Please see Figure 1 and Figure 2A cutter frame 18 is fixedly installed at the bottom of the rectangular toothed plate 9. An inclined rectangular plate is fixedly installed at the top of the cutter frame 18 away from the rectangular toothed plate 9. The inclined rectangular plate has the same specifications as the rectangular toothed plate 9. Connecting horizontal plates 2 are installed at the top of both ends of the cutter frame 18 through bolt rods. The inner sides of both ends of the connecting horizontal plates 2 are respectively inserted into the outer sides of the top of the two movable vertical plates 12. The setting of the inclined rectangular plates increases the structural strength and stability of the cutter frame 18. When the cutter frame 18 moves, it drives the two movable vertical plates 12 to move through the connecting horizontal plates 2, ensuring that both ends of the transparent film can be pressed and fixed. A cutting blade 17 is snapped at the bottom of the cutter frame 18.

[0028] The implementation principle of the cutting device of a transparent film three-servo packaging machine according to an embodiment of this application is as follows: The hydraulic rod 4 serves as the power source. After starting, it extends and retracts, pushing the toothed plate 5 to slide linearly on the upper surface of the arched frame 3. Since the toothed plate 5 meshes with the first spur gear 6, the linear motion of the toothed plate 5 is converted into the rotational motion of the first spur gear 6, driving the rotating shaft 10 to rotate. The second spur gear 7 in the middle of the rotating shaft 10 rotates accordingly, and through meshing with the third spur gear 8, transmits the rotational motion to the third spur gear 8. The third spur gear 8 then meshes with the rectangular toothed plate 9, converting the rotational motion into the linear motion of the rectangular toothed plate 9, thereby driving the cutter frame 18 and the cutting blade 17 fixed at its bottom to reciprocate up and down, realizing the cutting action of the transparent film. In this process, by controlling the extension and retraction speed and stroke of the hydraulic rod 4, the descent speed and cutting position of the cutting blade 17 can be precisely adjusted to ensure cutting accuracy.

[0029] The conveyor belt 13 in the middle of the bottom frame 1 is driven by a servo motor and operates stably at a set speed. The transparent film is placed on the conveyor belt 13, and due to the significant friction between the anti-slip buffer layer on the surface of the conveyor belt 13 and the transparent film, the transparent film is smoothly conveyed forward with the conveyor belt 13. The servo motor can precisely control the running speed of the conveyor belt 13 according to the overall working rhythm of the packaging machine, ensuring that the transparent film is accurately conveyed to the cutting position.

[0030] Before the transparent film is conveyed to the cutting position, the fixing system consisting of the limiting vertical rods 14, the sliding plate, the movable vertical plate 12, and the pressure plate 16 located at the top two ends of the outer side of the arched frame 3 begins to work. The system slides downwards along the limiting vertical rods 14, causing the movable vertical plate 12 and the pressure plate 16 to descend. The two pressure plates 16 are symmetrically arranged on both sides of the transparent film, made of rubber with a soft textured surface. This allows the transparent film to be reliably pressed onto the conveyor belt 13 without damaging it, preventing displacement during the cutting process and ensuring accurate cutting. Once the transparent film is conveyed to the predetermined cutting position and fixed by the pressure plates 16, the hydraulic rod 4 pushes the cutting blade 17 to descend rapidly. The pressure plates 16 move up and down simultaneously with the cutting blade 17. After cutting, the hydraulic rod 4 drives the cutting blade 17 to rise and reset, and the two pressure plates 16 on both sides move accordingly, releasing the pressure on the transparent film.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cutting device for a transparent film three-servo packaging machine, comprising a bottom frame (1), characterized in that: An arched frame (3) is provided at the middle position of the top of the bottom frame (1). A fixing plate (11) is fixedly provided at one end of the top of the arched frame (3). A rotating shaft (10) is rotatably inserted at one end of the top of the fixing plate (11). A first straight gear (6) is fixedly sleeved on the outer side of one end of the rotating shaft (10). A toothed plate (5) is provided by meshing the teeth at the bottom of the outer circumference of the first straight gear (6). A hydraulic rod (4) is fixedly provided at one end of the toothed plate (5) by a pad. One end of the hydraulic rod (4) is fixedly provided at the top of the arched frame (3) by a vertical plate. A second spur gear (7) is fixedly sleeved in the middle of the rotating shaft (10). A third spur gear (8) is provided by the teeth of the second spur gear (7) meshing with the teeth on one side of the outer circumference. A rectangular tooth plate (9) is provided by the teeth of the third spur gear (8) on the side away from the second spur gear (7). A tool frame (18) is fixedly provided at the bottom of the rectangular tooth plate (9). A cutting blade plate (17) is snapped into the bottom of the tool frame (18).

2. The cutting device for a transparent film three-servo packaging machine according to claim 1, characterized in that: A conveyor belt (13) is rotatably provided at the middle position of the bottom frame (1). The surface of the conveyor belt (13) is provided with an anti-slip buffer layer. Fixed extension plates (15) are fixedly provided at both ends of the bottom of the bottom frame (1). The fixed extension plates (15) are set in an "L" shape. Fixed holes are provided at the bottom of the fixed extension plates (15).

3. The cutting device for a transparent film three-servo packaging machine according to claim 1, characterized in that: The width of the toothed plate (5) is the same as the width of the first spur gear (6), and the bottom of the toothed plate (5) is slidably connected to the upper surface of the arched frame (3).

4. The cutting device for a transparent film three-servo packaging machine according to claim 1, characterized in that: A crossbar is fixedly inserted into the middle of the third spur gear (8), and the two ends of the crossbar are rotatably set at one end of the top of the fixed plate (11).

5. The cutting device for a transparent film three-servo packaging machine according to claim 1, characterized in that: The rectangular toothed plate (9) has a fixed groove in the middle, and a crossbar is slidably inserted in the middle of the groove. The two ends of the crossbar are fixedly set on the top of the inner side of the two arched frames (3).

6. The cutting device for a transparent film three-servo packaging machine according to claim 1, characterized in that: An inclined rectangular plate is fixedly installed at the top of the tool frame (18) away from the rectangular toothed plate (9). The inclined rectangular plate has the same specifications as the rectangular toothed plate (9). A connecting horizontal plate (2) is installed at the top of both ends of the tool frame (18) through bolt rods. The inner sides of both ends of the connecting horizontal plate (2) are respectively inserted into the outer sides of the top of the two movable vertical plates (12).

7. The cutting device for a transparent film three-servo packaging machine according to claim 1, characterized in that: Limiting vertical rods (14) are fixedly installed at both ends of the top of the outer side of the arched frame (3) through connecting plates. A sliding plate is slidably sleeved on the outer side of the middle of the limiting vertical rod (14). A movable vertical plate (12) is fixedly installed on one side of the sliding plate. One end of the top of the pressure plate (16) is fixedly installed at the bottom of the movable vertical plate (12). There are two pressure plates (16), and the two pressure plates (16) are located on the outer side of the two arched frames (3).

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