Paperboard cutting device capable of fixing distance

Abstract

The paperboard cutting device comprises an operation table, a mounting plate is fixed to the middle of the top of the operation table, two first supports are fixed to one side of the top of the operation table, two first connecting plates are symmetrically fixed to the tops of the two first supports, and the same first conveying belt is arranged on the inner side walls of the two first connecting plates; two second supports are fixed to one side of the top of the operation table, two second connecting plates are symmetrically fixed to the tops of the two second supports, and two second conveying belts are symmetrically arranged on the inner side walls of the two second connecting plates. The third motor is driven to drive the lead screw to rotate, the lead screw is matched with the lead screw nut to drive the supporting plate to move in the direction of the first sliding groove, then the infrared sensor and the receiver are driven to move at the same time, the infrared sensor and the receiver are gradually close to or away from one end of the first conveying belt, and the conveying length of paperboards is changed; the cutting length of the paperboard can be changed, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of paperboard production technology, and in particular to a paperboard cutting device with a fixed distance. Background Technology

[0002] Paperboard is a material made from pulp through processing. It typically has high strength and rigidity and is mainly used in packaging, transportation, construction, and handicrafts. As a widely used material in packaging and transportation, paperboard needs to be cut during the production process, thus requiring a paperboard cutting device that can cut at a fixed distance.

[0003] Traditional cardboard cutting equipment relies heavily on manual operation or simple mechanical devices. During manual cutting, operators may experience fatigue, lack of concentration, or insufficient hand stability, leading to inconsistent cutting lengths and straightness. This lack of precise control easily results in inaccurate cardboard dimensions, directly impacting subsequent packaging and production processes. Furthermore, existing cardboard cutting equipment typically only allows for fixed cutting lengths, making it difficult to adapt to diverse product demands. In modern manufacturing, product specifications and dimensions frequently change, and customer demand for customization and small-batch production is increasing. However, this limitation of traditional cutting equipment makes the cutting process cumbersome and inefficient when dealing with cardboard of different sizes and shapes, hindering flexibility in responding to market changes and limiting the flexibility and adaptability of production lines. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cardboard cutting device with a fixed distance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cardboard cutting device with a fixed distance includes an operating table. A mounting plate is fixed to the center of the top of the operating table. Two first supports are fixed to one side of the top of the operating table. Two first connecting plates are symmetrically fixed to the top of the two first supports. A first conveyor belt is arranged on the inner side wall of the two first connecting plates. Two second supports are fixed to one side of the top of the operating table. Two second connecting plates are symmetrically fixed to the top of the two second supports. Two second conveyor belts are symmetrically arranged on the inner side wall of the two second connecting plates. A first rotating mechanism for rotating the first conveyor belt is arranged on the outer side wall of one of the first connecting plates, and a second rotating mechanism for rotating the second conveyor belt is arranged on the outer side wall of one of the second connecting plates. A support plate is provided on one side of the top of the operating table, and the support plate is located between the two second conveyor belts. At the bottom center, a receiver is installed at the top center of the support plate. A first U-shaped plate is fixed to one end of the support plate, and an infrared sensor is installed at the top of the first U-shaped plate. A first moving mechanism for moving the support plate is provided on one side of the top of the operating table. Two cutting blades are provided on one side of the mounting plate, and a second moving mechanism for moving the two cutting blades is provided on the side wall of the mounting plate. A conveying mechanism for conveying cardboard is provided on the top of the first conveyor belt. A third motor drives the lead screw to rotate, which, together with the lead screw nut, moves the support plate along the direction of the first slide groove. This causes the infrared sensor and receiver to move simultaneously, so that the infrared sensor and receiver gradually move closer to or further away from one end of the first conveyor belt, changing the length of the cardboard being conveyed, thereby changing the cutting length of the cardboard and improving the practicality of the device.

[0007] Preferably, the first moving mechanism includes a first chute, which is located on one side of the top of the operating table. A lead screw is rotatably connected inside the first chute, and a lead screw nut is fitted on the side wall of the lead screw. The lead screw nut and the lead screw are compatible. The lead screw nut and the support plate are fixed. A third motor is fixed to the outer wall of one end of the operating table, and the output shaft of the third motor is fixed to the lead screw. The third motor drives the lead screw to rotate, which, in conjunction with the lead screw nut, drives the support plate to move along the direction of the first chute. This causes the infrared sensor and the receiver to move simultaneously, so that the infrared sensor and the receiver gradually move closer to or further away from one end of the first conveyor belt, changing the length of the cardboard being conveyed, thereby changing the cutting length of the cardboard and improving the practicality of the device.

[0008] Preferably, the first rotating mechanism includes two first rotating shafts, which are symmetrically arranged on the inner sidewalls of two first connecting plates. One end of one of the first rotating shafts passes through the outer sidewall of one of the first connecting plates. A first transmission roller is sleeved on the sidewall of each of the two first rotating shafts, and both ends of the first conveyor belt are respectively sleeved on the sidewalls of the two first transmission rollers. A second motor is fixed to the outer sidewall of one of the first connecting plates, and the output shaft of the second motor is fixed to one of the first rotating shafts. The second rotating mechanism includes two second rotating shafts, which are symmetrically arranged on the inner sidewalls of two second connecting plates. One end of the second rotating shaft passes through the outer wall of one of the second connecting plates. A second drive roller is sleeved on the side wall of each of the two second rotating shafts. An annular sleeve is sleeved in the middle of the side wall of each of the two second drive rollers. The two ends of the two second conveyor belts are respectively sleeved on the side wall of the two second drive rollers, and the two second conveyor belts are symmetrically distributed about the two annular sleeves. A fifth motor is fixed on the outer wall of one of the second connecting plates, and the fifth motor is fixed to one of the second rotating shafts. The second motor drives the first drive roller to rotate in conjunction with one of the first rotating shafts, and drives the first conveyor belt to rotate in conjunction with the other first drive roller and the first rotating shaft.

[0009] Preferably, the conveying mechanism includes a second U-shaped plate, which is disposed at the top middle of the first conveyor belt, and the bottom two ends of the second U-shaped plate are respectively fixed to two first connecting plates. A hydraulic push rod is fixed at the top middle of the second U-shaped plate, and a third U-shaped plate is fixed at the output end of the hydraulic push rod. A fifth rotating shaft is rotatably connected to the inner side wall of the third U-shaped plate, and a conveying roller is sleeved on the outer side wall of the fifth rotating shaft. A fourth motor is fixed to the outer side wall of one end of the third U-shaped plate, and the output shaft of the fourth motor is fixed to the fifth rotating shaft. During cutting, the hydraulic push rod is driven to cooperate with the third U-shaped plate and the fifth rotating shaft to drive the conveying roller to move downward until the conveying roller contacts the upper surface of the cardboard, and the fourth motor is driven to drive the fifth rotating shaft to rotate, thereby driving the conveying roller to rotate, and thus conveying the cardboard.

[0010] Preferably, the second moving mechanism includes two third rotating shafts. One end of the outer wall of the mounting plate is rotatably connected to the two third rotating shafts. Each of the two third rotating shafts has a connecting rod sleeved on its sidewall. Two fourth sliding grooves are formed through the middle of the sidewalls of the two connecting rods. One end of the outer wall of each of the two connecting rods has a third sliding groove formed through it. A first column is disposed inside each of the two third sliding grooves. The other end of the outer wall of the mounting plate has a second sliding groove. A sliding rod is fixed to the inner sidewall of the second sliding groove. Two sliders are sleeved on the sidewall of the sliding rod, and the two sliders are respectively fixed to the two first columns. The two sliders are respectively fixed to one end of two cutting blades. The outer wall of the mounting plate is rotatably connected to two... The fourth rotating shaft has gears fitted onto its sidewalls, and the two gears mesh. A second column is fixed near the edge of the outer sidewall of each of the two gears, with one end of each second column located inside a fourth sliding groove. A first motor is fixed to the sidewall of the mounting plate, and the output shaft of the first motor is fixed to one of the fourth rotating shafts, driving the fourth motor in conjunction with the fifth rotating shaft to rotate the conveyor roller. At this time, the conveyor roller and the first conveyor belt rotate in a counter-rotating manner, thus conveying the cardboard. When one end of the cardboard enters below the first U-shaped plate, the infrared light emitted by the infrared sensor is blocked by the cardboard, and the receiver cannot receive the infrared light emitted by the infrared sensor. At this time, the infrared sensor will generate a signal. The signal is transmitted to the controller. Upon receiving the signal, the controller disconnects the power switches for the second and fourth motors and simultaneously turns on the power switch for the first motor. When the first motor is powered on, it drives one of the fourth rotating shafts to rotate one of the gears, and another fourth rotating shaft to rotate another gear, which in turn rotates the two second columns. Simultaneously, the rotation of the two second columns, along with the two fourth sliding grooves, causes one end of each of the two connecting rods to move closer together. Then, with the two third sliding grooves and the two first columns restrained by the sliding rods, the two sliders move closer together, which in turn causes the two cutting blades to move closer together, cutting the cardboard. Simultaneously, the fifth motor is driven to work with one of the second rotating shafts... The rotation of the shaft drives one of the second transmission rollers to rotate, which in turn drives two second conveyor belts to rotate, conveying the cut cardboard. When the cardboard no longer blocks the infrared light emitted by the infrared sensor, the infrared light emitted by the infrared sensor is received by the receiver. At this time, the controller disconnects the power switch of the first motor and turns on the power switches of the second and fourth motors, causing the first conveyor belt and conveyor rollers to rotate again, conveying the cardboard. When the cardboard blocks the infrared light emitted by the infrared sensor again, a second cutting operation can be performed. This achieves fixed-length cutting of the infrared sensor cardboard without manual cutting, improving cutting accuracy.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. During use, the cardboard is conveyed by the first rotating mechanism and the conveying mechanism. During the conveying process, the two cutting blades can be brought close to each other by the receiver and infrared sensor in conjunction with the second moving mechanism, so that the cardboard can be cut to a fixed length without the need for manual cutting, thus improving the cutting accuracy of the cardboard.

[0013] 2. By moving the support plate through the first moving mechanism, the receiver and infrared sensor are simultaneously moved closer to or further away from one end of the first conveyor belt, thereby changing the conveying length of the cardboard and enabling the cutting of cardboard to different lengths, thus improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a cardboard cutting device with a fixed distance according to the present invention;

[0015] Figure 2 An exploded view of the first conveyor belt, second conveyor belt, annular sleeve plate, first U-shaped plate, first transmission roller and second transmission roller of a cardboard cutting device with fixed distance proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the first moving mechanism of a cardboard cutting device with a fixed distance according to the present invention.

[0017] Figure 4 This is a second moving schematic diagram of a cardboard cutting device with a fixed distance according to the present invention;

[0018] Figure 5 An exploded view of the connecting rod, first column, gear, and second column of a cardboard cutting device with a fixed distance proposed in this utility model;

[0019] Figure 6 This is a schematic cross-sectional view of the conveyor roller of a cardboard cutting device with a fixed distance proposed in this utility model.

[0020] In the diagram: 1. Operating platform; 2. Mounting plate; 3. First motor; 4. First bracket; 5. Second bracket; 6. First connecting plate; 7. Second connecting plate; 8. Second motor; 9. First conveyor belt; 10. Second conveyor belt; 11. Annular sleeve plate; 12. First U-shaped plate; 13. First drive roller; 14. Second drive roller; 15. First rotating shaft; 16. Second rotating shaft; 17. Fifth motor; 19. First chute; 20. Lead screw; 21. Third motor; 22. Lead screw 23. Nut; 24. Support plate; 25. Receiver; 26. Infrared sensor; 27. Second slide rail; 28. Slide bar; 29. ​​Sliding block; 30. Cutting blade; 31. Connecting rod; 32. Third shaft; 33. First column; 34. Third slide rail; 35. Fourth slide rail; 36. Gear; 37. Second column; 38. Second U-shaped plate; 39. Hydraulic push rod; 40. Third U-shaped plate; 41. Fifth shaft; 42. Conveyor roller; 43. Fourth motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1 - Figure 6A cardboard cutting device with a fixed distance includes an operating table 1. A mounting plate 2 is fixed to the center of the top of the operating table 1. Two first supports 4 are fixed to one side of the top of the operating table 1. Two first connecting plates 6 are symmetrically fixed to the top of the two first supports 4. A first conveyor belt 9 is arranged on the inner side wall of the two first connecting plates 6. Two second supports 5 are fixed to one side of the top of the operating table 1. Two second connecting plates 7 are symmetrically fixed to the top of the two second supports 5. Two second conveyor belts 10 are symmetrically arranged on the inner side wall of the two second connecting plates 7. A first rotating mechanism for rotating the first conveyor belt 9 is arranged on the outer side wall of one of the first connecting plates 6, and a second rotating mechanism for rotating the second conveyor belt 10 is arranged on the outer side wall of one of the second connecting plates 7. A support plate 23 is arranged on one side of the top of the operating table 1, and the support plate 23 is located below the two second conveyor belts 10. At the center of the square, a receiver 24 is installed at the top center of the support plate 23. A first U-shaped plate 12 is fixed to one end of the support plate 23. An infrared sensor 25 is installed inside the top of the first U-shaped plate 12. A first moving mechanism for moving the support plate 23 is provided on one side of the top of the operating table 1. Two cutting blades 29 are provided on one side of the mounting plate 2. A second moving mechanism for moving the two cutting blades 29 is provided on the side wall of the mounting plate 2. A conveying mechanism for conveying cardboard is provided on the top of the first conveyor belt 9. During use, the cardboard is conveyed by the first rotating mechanism and the conveying mechanism. During the conveying process, the receiver 24 and the infrared sensor 25, in conjunction with the second moving mechanism, can bring the two cutting blades 29 closer together, thereby performing fixed-length cutting of the cardboard without the need for manual cutting, thus improving the cutting accuracy of the cardboard.

[0023] Furthermore, the first moving mechanism includes a first slide 19, which is located on one side of the top of the operating table 1. A lead screw 20 is rotatably connected inside the first slide 19. A lead screw nut 22 is sleeved on the side wall of the lead screw 20, and the lead screw nut 22 and the lead screw 20 are compatible. The lead screw nut 22 and the support plate 23 are fixed. A third motor 21 is fixed on the outer wall of one end of the operating table 1, and the output shaft of the third motor 21 is fixed to the lead screw 20. The third motor 21 drives the lead screw 20 to rotate, which, together with the lead screw nut 22, drives the support plate 23 to move along the direction of the first slide 19. This, in turn, drives the infrared sensor 25 and the receiver 24 to move simultaneously, so that the infrared sensor 25 and the receiver 24 gradually move closer to or further away from one end of the first conveyor belt 9, changing the length of the cardboard being conveyed, thereby changing the cutting length of the cardboard and improving the practicality of the device.

[0024] Furthermore, the first rotating mechanism includes two first rotating shafts 15, which are symmetrically arranged on the inner sidewalls of the two first connecting plates 6. One end of one of the first rotating shafts 15 passes through the outer sidewall of one of the first connecting plates 6. A first transmission roller 13 is sleeved on the sidewall of each of the two first rotating shafts 15, and both ends of the first conveyor belt 9 are respectively sleeved on the sidewalls of the two first transmission rollers 13. A second motor 8 is fixed to the outer sidewall of one of the first connecting plates 6, and the output shaft of the second motor 8 is fixed to one of the first rotating shafts 15. The second rotating mechanism includes two second rotating shafts 16, which are symmetrically arranged on the inner sidewalls of the two second connecting plates 7. One end of one of the second rotating shafts 16... One end of the second connecting plate 7 passes through the outer wall of one of the second connecting plates 7. The two second rotating shafts 16 are each fitted with a second transmission roller 14 on their side walls. The two second transmission rollers 14 are each fitted with an annular sleeve plate 11 in the middle of their side walls. The two ends of the two second conveyor belts 10 are respectively fitted on the side walls of the two second transmission rollers 14. The two second conveyor belts 10 are symmetrically distributed about the two annular sleeve plates 11. A fifth motor 17 is fixed to the outer wall of one of the second connecting plates 7. The fifth motor 17 is fixed to one of the second rotating shafts 16. The second motor 8 drives one of the first rotating shafts 15 to rotate one of the first transmission rollers 13. The second motor 8 drives the first conveyor belt 9 to rotate in conjunction with the other first transmission roller 13 and the first rotating shaft 15.

[0025] Preferably, the conveying mechanism includes a second U-shaped plate 38, which is disposed at the top middle of the first conveyor belt 9. The bottom two ends of the second U-shaped plate 38 are respectively fixed to two first connecting plates 6. A hydraulic push rod 39 is fixed at the top middle of the second U-shaped plate 38. A third U-shaped plate 40 is fixed at the output end of the hydraulic push rod 39. A fifth rotating shaft 41 is rotatably connected to the inner side wall of the third U-shaped plate 40. A conveying roller 42 is sleeved on the outer side wall of the fifth rotating shaft 41. A fourth motor 43 is fixed to the outer side wall of one end of the third U-shaped plate 40. The output shaft of the fourth motor 43 is fixed to the fifth rotating shaft 41. During cutting, the hydraulic push rod 39 is driven to cooperate with the third U-shaped plate 40 and the fifth rotating shaft 41 to drive the conveying roller 42 to move downward until the conveying roller 42 contacts the upper surface of the cardboard. The fourth motor 43 is then driven to drive the fifth rotating shaft 41 to rotate, thereby driving the conveying roller 42 to rotate and thus conveying the cardboard.

[0026] Preferably, the second moving mechanism includes two third rotating shafts 31. Two third rotating shafts 31 are rotatably connected to one end of the outer wall of the mounting plate 2. Connecting rods 30 are sleeved on the side walls of both third rotating shafts 31. Two fourth sliding grooves 34 are formed through the middle of the side walls of both connecting rods 30. A third sliding groove 33 is formed through the outer wall of one end of each connecting rod 30. A first column 32 is provided inside each of the two third sliding grooves 33. A second sliding groove 26 is formed at the other end of the outer wall of the mounting plate 2. A sliding rod 27 is fixed to the inner side wall of the second sliding groove 26. Two sliders 28 are sleeved on the side wall of the sliding rod 27, and the two sliders 28 are respectively fixed to the two first columns 32. The two sliders 28 are respectively fixed to one end of each of the two cutting blades 29. Two... Two fourth rotating shafts 35 are fitted with gears 36 on their sidewalls, and the two gears 36 mesh. A second column 37 is fixed near the edge of the outer sidewall of each gear 36, and one end of each second column 37 is located inside a fourth sliding groove 34. A first motor 3 is fixed to the sidewall of the mounting plate 2, and the output shaft of the first motor 3 is fixed to one of the fourth rotating shafts 35, driving the fourth motor 43 to cooperate with the fifth rotating shaft 41 to rotate the conveyor roller 42. At this time, the conveyor roller 42 and the first conveyor belt 9 rotate in a counter-rotating manner, thus conveying the cardboard. When one end of the cardboard enters below the first U-shaped plate 12, the infrared light emitted by the infrared sensor 25 is blocked by the cardboard, and the receiver 24 cannot receive the infrared light emitted by the infrared sensor 25. At this time, the infrared sensor 25 generates a signal, which is transmitted to the controller. After receiving the signal, the controller disconnects the power switches of the second motor 8 and the fourth motor 43, and simultaneously turns on the power switch of the first motor 3. When the first motor 3 is powered on, it drives one of the fourth shafts 35 to rotate one of the gears 36, and another fourth shaft 35 to rotate another gear 36, thereby driving the two second columns 37 to rotate. While the two second columns 37 are rotating, they work with the two fourth slide rails 34 to bring one end of the two connecting rods 30 closer together. Then, with the two third slide rails 33 and the two first columns 32 restrained by the slide rod 27, they drive the two sliders 28 to move closer together, thereby driving the two cutting blades 29 to move closer together. The cardboard is cut. Simultaneously, the fifth motor 17, in conjunction with one of the second rotating shafts 16, rotates, driving one of the second transmission rollers 14. This, in turn, drives two second conveyor belts 10 to rotate, conveying the cut cardboard. When the cardboard no longer blocks the infrared light emitted by the infrared sensor 25, the infrared light emitted by the sensor 25 is received by the receiver 24. At this point, the controller disconnects the power switch of the first motor 3 and turns on the power switches of the second motor 8 and the fourth motor 43, causing the first conveyor belt 9 and the conveyor roller 42 to rotate again, conveying the cardboard. When the cardboard blocks the infrared light emitted by the infrared sensor 25 again, a second cutting operation can be performed.This allows for fixed-length cutting of the infrared sensor cardboard, eliminating the need for manual cutting and improving cutting accuracy.

[0027] Working Principle: During operation, the cardboard to be cut is placed on top of the first conveyor belt 9. The hydraulic push rod 39, in conjunction with the third U-shaped plate 40 and the fifth rotating shaft 41, drives the conveyor roller 42 downwards until it contacts the upper surface of the cardboard. Simultaneously, the power switches for the second motor 8 and the fourth motor 43 are turned on. The second motor 8, in conjunction with one of the first rotating shafts 15, drives one of the first transmission rollers 13 to rotate, and in conjunction with the other first transmission roller 13 and the first rotating shaft 15, drives the first conveyor belt 9 to rotate. Simultaneously, the fourth motor 43, in conjunction with the fifth rotating shaft 41, drives the conveyor roller 42 to rotate. At this point, the conveyor roller 42 and the first conveyor belt 9 rotate in a counter-rotating manner, thus conveying the cardboard. Due to infrared sensing... The device 25 is electrically connected to a controller, which controls the power switches of the first motor 3 and the second motor 8. When one end of the cardboard enters under the first U-shaped plate 12, the infrared light emitted by the infrared sensor 25 (HC-SR501) is blocked by the cardboard, and the receiver 24 cannot receive the infrared light emitted by the infrared sensor 25. At this time, the infrared sensor 25 generates a signal, which is transmitted to the controller. After receiving the signal, the controller disconnects the power switches of the second motor 8 and the fourth motor 43, and simultaneously turns on the power switch of the first motor 3. After the second motor 8 and the fourth motor 43 are de-energized, the first conveyor belt 9 and the conveyor roller 42 no longer rotate, that is, they do not convey the cardboard. When the first motor 3 is energized, it drives the first motor 3 in conjunction with one of the fourth rotating shafts 35 to drive the... One gear 36 rotates, which in turn drives another gear 36 to rotate, in conjunction with another fourth rotating shaft 35. This, in turn, drives two second columns 37 to rotate. Simultaneously, the rotation of the two second columns 37, in conjunction with two fourth sliding grooves 34, causes one end of each connecting rod 30 to move closer together. With the assistance of two third sliding grooves 33 and two first columns 32, and constrained by sliding rods 27, this causes two sliders 28 to move closer together, which in turn causes two cutting blades 29 to move closer together, cutting the cardboard. Simultaneously, the power switch of the fifth motor 17 is switched on, driving the fifth motor 17 to rotate, in conjunction with one of the second rotating shafts 16, which in turn drives one of the second transmission rollers 14 to rotate. This, in conjunction with the other second rotating shaft 16 and the second transmission roller 14, drives two second conveyor belts 10 to rotate. The cut cardboard is conveyed. When the cardboard no longer blocks the infrared light emitted by the infrared sensor 25, the infrared light emitted by the infrared sensor 25 is received by the receiver 24. At this time, the controller disconnects the power switch of the first motor 3 and turns on the power switches of the second motor 8 and the fourth motor 43, causing the first conveyor belt 9 and the conveyor roller 42 to rotate again to convey the cardboard. When the cardboard blocks the infrared light emitted by the infrared sensor 25 again, a second cutting operation can be performed. This achieves fixed-length cutting of the cardboard by the infrared sensor 25 without manual cutting, improving cutting accuracy. When different lengths of cardboard need to be cut, the power switch of the third motor 21 is turned on, driving the third motor 21 to rotate the lead screw 20.The lead screw nut 22 drives the support plate 23 to move along the first slide groove 19, which in turn drives the infrared sensor 25 and receiver 24 to move simultaneously. This causes the infrared sensor 25 and receiver 24 to gradually move closer to or further away from one end of the first conveyor belt 9, changing the length of the cardboard being conveyed and thus changing the cardboard cutting length, thereby improving the practicality of the device.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A distance-adjustable paperboard cutting device comprising an operating table (1), characterized in that, A mounting plate (2) is fixed at the top center of the operating platform (1). Two first supports (4) are fixed on one side of the top of the operating platform (1). Two first connecting plates (6) are symmetrically fixed on the top of the two first supports (4). The same first conveyor belt (9) is provided on the inner side wall of the two first connecting plates (6). Two second supports (5) are fixed on one side of the top of the operating platform (1). Two second connecting plates (7) are symmetrically fixed on the top of the two second supports (5). Two second conveyor belts (10) are symmetrically provided on the inner side wall of the two second connecting plates (7). A first rotating mechanism for rotating the first conveyor belt (9) is provided on the outer side wall of one of the first connecting plates (6). A mechanism for rotating the first conveyor belt (9) is provided on the outer side wall of one of the second connecting plates (7). The second rotating mechanism of the second conveyor belt (10) is provided with a support plate (23) on one side of the top of the operating table (1), and the support plate (23) is located in the middle of the two second conveyor belts (10). A receiver (24) is installed in the middle of the top of the support plate (23). A first U-shaped plate (12) is fixed at one end of the support plate (23). An infrared sensor (25) is installed in the top of the first U-shaped plate (12). A first moving mechanism for moving the support plate (23) is provided on one side of the top of the operating table (1). Two cutting blades (29) are provided on one side of the mounting plate (2). A second moving mechanism for moving the two cutting blades (29) is provided on the side wall of the mounting plate (2). A conveying mechanism for conveying cardboard is provided on the top of the first conveyor belt (9).

2. The distance adjustable paperboard cutting device of claim 1, wherein, The first moving mechanism includes a first slide (19), which is located on one side of the top of the operating table (1). A lead screw (20) is rotatably connected inside the first slide (19). A lead screw nut (22) is sleeved on the side wall of the lead screw (20), and the lead screw nut (22) and the lead screw (20) are adapted to each other. The lead screw nut (22) and the support plate (23) are fixed. A third motor (21) is fixed on the outer side wall of one end of the operating table (1), and the output shaft of the third motor (21) is fixed to the lead screw (20).

3. The distance adjustable paperboard cutting device of claim 1, wherein, The first rotating mechanism includes two first rotating shafts (15), which are symmetrically arranged on the inner sidewalls of two first connecting plates (6). One end of one of the first rotating shafts (15) passes through the outer sidewall of one of the first connecting plates (6). The sidewalls of the two first rotating shafts (15) are fitted with first transmission rollers (13), and the two ends of the first conveyor belt (9) are respectively fitted on the sidewalls of the two first transmission rollers (13). A second motor (8) is fixed on the outer sidewall of one of the first connecting plates (6), and the output shaft of the second motor (8) is fixed to one of the first rotating shafts (15).

4. The distance adjustable paperboard cutting device of claim 1, wherein, The second rotating mechanism includes two second rotating shafts (16), which are symmetrically arranged on the inner sidewalls of two second connecting plates (7). One end of one of the second rotating shafts (16) passes through the outer sidewall of one of the second connecting plates (7). The sidewalls of the two second rotating shafts (16) are fitted with second transmission rollers (14). The middle of the sidewalls of the two second transmission rollers (14) is fitted with an annular sleeve plate (11). The two ends of the two second conveyor belts (10) are respectively fitted on the sidewalls of the two second transmission rollers (14), and the two second conveyor belts (10) are symmetrically distributed about the two annular sleeve plates (11). A fifth motor (17) is fixed on the outer sidewall of one of the second connecting plates (7), and the fifth motor (17) and one of the second rotating shafts (16) are fixed.

5. The distance adjustable paperboard cutting device of claim 1, wherein, The conveying mechanism includes a second U-shaped plate (38), which is located at the top middle of the first conveyor belt (9). The bottom ends of the second U-shaped plate (38) are fixed to two first connecting plates (6) respectively. A hydraulic push rod (39) is fixed at the top middle of the second U-shaped plate (38). A third U-shaped plate (40) is fixed at the output end of the hydraulic push rod (39). A fifth rotating shaft (41) is rotatably connected to the inner side wall of the third U-shaped plate (40). A conveying roller (42) is sleeved on the outer side wall of the fifth rotating shaft (41). A fourth motor (43) is fixed to the outer side wall of one end of the third U-shaped plate (40). The output shaft of the fourth motor (43) is fixed to the fifth rotating shaft (41).

6. The distance adjustable paperboard cutting device of claim 1, wherein, The second moving mechanism includes two third rotating shafts (31). One end of the outer wall of the mounting plate (2) is rotatably connected to the two third rotating shafts (31). The side walls of the two third rotating shafts (31) are fitted with connecting rods (30). The middle of the side walls of the two connecting rods (30) is opened with two fourth sliding grooves (34). The outer wall of one end of the two connecting rods (30) is opened with a third sliding groove (33). The two third sliding grooves (33) are provided with first columns (32). The other end of the outer wall of the mounting plate (2) is opened with a second sliding groove (26). The inner side wall of the second sliding groove (26) is fixed with a sliding rod (27). The side wall of the sliding rod (27) is fitted with two sliders (28). The two sliders (28) are fixed to the two first columns (32) respectively. The two sliders (28) are fixed to one end of the two cutting blades (29) respectively.

7. The distance adjustable paperboard cutting device of claim 5, wherein, The outer wall of the mounting plate (2) is rotatably connected to two fourth shafts (35). The side walls of the two fourth shafts (35) are fitted with gears (36), and the two gears (36) mesh. The outer walls of the two gears (36) are fixed with second columns (37) near the edge. One end of the two second columns (37) is located inside the two fourth slide grooves (34). The side wall of the mounting plate (2) is fixed with a first motor (3), and the output shaft of the first motor (3) is fixed to one of the fourth shafts (35).

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