Edge cutting equipment for CPP film production

Abstract

The utility model relates to the technical field of CPP film production, and particularly discloses edge cutting equipment for CPP film production, which comprises a machine body, a mounting cylinder rotationally connected to the machine body, a motor fixedly connected to the machine body and used for driving the mounting cylinder, and a controller electrically connected with the motor, the cutting device is characterized in that a plurality of cutters are connected to the mounting cylinder in a sliding mode, a lead screw is coaxially and rotatably connected to the interior of the mounting cylinder, a sliding groove is formed in the mounting cylinder, threaded blocks which extend into the mounting cylinder and are in sliding fit with the sliding groove are arranged on the cutters, and the sides, close to the lead screw, of the threaded blocks are in threaded fit with the lead screw; an adjusting assembly used for adjusting the threaded block to move in the direction close to the lead screw or away from the lead screw is arranged on the mounting cylinder, and a locking assembly used for locking the lead screw is arranged on the mounting cylinder. The film cutting device has the effects that the adjustable range of the cutter is large, the size of cut films is large, and the film cutting device is suitable for cutting different edge widths.

Description

Technical Field

[0001] This application relates to the technical field of CPP film production, and particularly to an edge cutting device for CPP film production. Background Art

[0002] CPP film is a polypropylene film produced by the casting process, which can be divided into general CPP film, aluminized CPP film, and retort-grade CPP film. CPP film has good transparency and uniform thickness, and is generally used as the inner layer material of composite films.

[0003] In the related art, the Chinese patent with the application number 2023227915367 proposed an edge cutting device for CPP film production, including a base. On both sides of the top of the base, a support seat is fixedly connected respectively. The two support seats are symmetrically arranged. Between the middle positions of the two side walls of the support seat, two adjustment slots are symmetrically opened in the front and back. In the middle of the adjustment slot, a connecting bolt is fixedly installed. On the middle part of the side wall facing each other of the two support seats, a tool holder is slidably connected respectively. Through the overall edge cutting mechanism, an independently adjustable structure design is adopted, that is, two adjustment slots are symmetrically opened in the front and back in the middle of the two support seats on both sides. A connecting bolt is fixedly installed in the adjustment slot. The screw rod of the connecting bolt is fixedly connected to the tool holder on its corresponding side. By moving the position of the connecting bolt in the adjustment slot, the position adjustment of the tool holder structure can be realized, and flexible adjustment can be carried out according to the actual edge cutting requirements of the CPP film.

[0004] Regarding the above related technology, the inventor believes that there are the following defects: The above solution can only adjust the tool holder up and down through the connecting bolt, but cannot be adjusted along the width direction of the film, that is, the width of the cut film edge cannot be controlled, and films of different widths cannot be cut, so the adaptability is weak. Summary of the Utility Model

[0005] In order to improve the problem of difficulty in cutting films of different widths, this application provides an edge cutting device for CPP film production.

[0006] The edge cutting device for CPP film production provided by this application adopts the following technical solution:

[0007] An edge cutting device for CPP film production, comprising a machine body, a mounting cylinder rotatably connected to the machine body, a motor fixed to the machine body and used to drive the mounting cylinder, and a controller electrically connected to the motor. It is characterized in that: a plurality of cutting knives are slidably connected to the mounting cylinder, a lead screw is coaxially and rotatably connected inside the mounting cylinder, a chute is formed on the mounting cylinder, a threaded block extending into the mounting cylinder and slidably adapted to the chute is arranged on the cutting knife, the side of the threaded block close to the lead screw is threadedly adapted to the lead screw, an adjusting assembly is arranged on the mounting cylinder for adjusting the threaded block to move in the direction close to / away from the lead screw, and a locking assembly is arranged on the mounting cylinder for locking the lead screw.

[0008] By adopting the above technical solution, before cutting the film, first move the threaded block on a corresponding cutting knife to be threadedly connected to the lead screw through the adjusting assembly, then release the locking assembly to enable relative rotation between the lead screw and the mounting cylinder, and then rotate the lead screw to drive the threaded block to move, thereby moving the cutting knife on the mounting cylinder. When the cutting knife moves to the specified position, disconnect the threaded block from the lead screw through the adjusting assembly, and then the next cutting knife can be adjusted. When all the cutting knives are adjusted to the specified positions, lock the lead screw through the locking structure to prevent relative displacement between the lead screw and the mounting cylinder to avoid the lead screw shaking when the mounting cylinder rotates later. Finally, start the motor through the controller to cut the film. Since the adjustable range of the cutting knife is large, it can adapt to films of various sizes and the widths of various cutting edges.

[0009] Optionally, the adjusting assembly includes an airbag adhered to the side of the threaded block away from the lead screw, an air pipe communicated with the airbag, and an air nozzle fixed to the end of the mounting cylinder and communicated with the air pipe. When the airbag is in a fully inflated state, the threaded block abuts tightly against the lead screw. The adjusting assembly further includes a disengaging member for driving the threaded block to disengage from the lead screw.

[0010] By adopting the above technical solution, connect an external air source such as a blower to the air nozzle, so that the airbag expands due to the air supply from the air source. The expanded airbag pushes the threaded block to move in the direction close to the lead screw until the threaded block is meshed and connected to the lead screw, and then the lead screw can be rotated to adjust the cutting knife. After the adjustment is completed, just suck the gas in the airbag by the air source, and at the same time, use the disengaging member to move the threaded block in the direction away from the lead screw, that is, the adjustment of one cutting knife is completed.

[0011] Optionally, the disengaging member is an elastic telescopic rod with two ends respectively fixed to the threaded block and the cutting knife. When the threaded block abuts tightly against the lead screw, the elastic telescopic rod is in a stretched state.

[0012] By adopting the above technical solution, when the airbag expands and pushes the threaded block to move towards the lead screw, the elastic telescopic rod extends; when the gas in the airbag decreases, the elastic telescopic rod contracts under the action of its own elastic force, thereby driving the threaded block to move away from the lead screw.

[0013] Optionally, a slider with a solid lubricant coated on its surface is fixedly connected between the airbag and the cutting tool.

[0014] By adopting the above technical solution, when the lead screw drives the threaded block to move, the airbag also moves accordingly. Since the surface layer of the slider is attached with a lubricant, the friction between the slider and the inner wall of the mounting cylinder is small, thereby making the movement of the airbag smoother and reducing the damage suffered by the airbag during direct friction at the same time.

[0015] Optionally, a constant-force coiling air drum is arranged in the mounting cylinder, the air pipe is wound around the coiling air drum, and the air nozzle is communicated with the air inlet of the coiling air drum.

[0016] By adopting the above technical solution, the constant-force coiling air drum keeps the air pipe in a relatively taut state all the time, that is, when the airbag moves away from the air nozzle, the constant-force coiling air drum unwinds, and when the airbag moves towards the air nozzle, the constant-force coiling air drum winds up, thereby avoiding phenomena such as entanglement between the air pipes or between the air pipe and the lead screw.

[0017] Optionally, the locking assembly includes a first end face gear fixedly connected to the end face of the mounting cylinder, a second end face gear slidably connected to the lead screw, and a magnet ring fixedly connected to the first end face gear. The second end face gear has ferromagnetism and is meshed and matched with the first end face gear, and a limiting member for limiting the moving direction of the second end face gear is arranged on the lead screw.

[0018] By adopting the above technical solution, when it is necessary to rotate the lead screw, only need to pull the second end face gear in the direction away from the first end face gear to disengage the second end face gear from the connection with the first end face gear. At this time, due to the limiting effect of the limiting member, the lead screw can be rotated by rotating the second end face gear; when it is necessary to lock the lead screw, only need to move the second end face gear towards the first end face gear to make the second end face gear and the first end face gear meshed and connected by suction force.

[0019] Optionally, the limiting member is a limiting strip fixedly connected to the lead screw, and a limiting groove adapted to the limiting strip is formed on the second end face gear.

[0020] By adopting the above technical solution, after the second end face gear is disengaged from meshing with the first end face gear and rotates, since the second end face gear can only move relative to the limiting strip in the length direction of the limiting strip, only need to rotate the second end face gear to drive the lead screw to rotate, which is simple to operate and has a simple structure.

[0021] Optionally, bearings are coaxially and fixedly connected to both ends of the installation cylinder, an electric push rod connected to the bearings is fixedly connected to the machine body, and the electric push rod is electrically connected to the controller.

[0022] By adopting the above technical solution, when cutting films with different thicknesses, different degrees of pressure need to be applied to the films. Only by adjusting the telescopic degree of the electric push rod through the controller can the height of the installation cylinder be adjusted, and then the pressure of the cutting knife on the film can be adjusted. The adjustment process is time-saving and labor-saving, and the adjustment accuracy is relatively high.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Before cutting the film, first move the threaded block on a corresponding cutting knife to be threadedly connected to the lead screw through the adjustment assembly, then release the locking assembly so that the lead screw can rotate relative to the installation cylinder, and then rotate the lead screw to drive the threaded block to move, thereby moving the cutting knife on the installation cylinder. When the cutting knife moves to the specified position, the threaded block is disengaged from the connection with the lead screw through the adjustment assembly, and then the next cutting knife can be adjusted. When all the cutting knives are adjusted to the specified positions, the lead screw is locked through the locking structure so that the lead screw and the installation cylinder cannot displace relative to each other to prevent the lead screw from shaking when the installation cylinder rotates later. Finally, the motor is started through the controller to cut the film. Since the adjustable range of the cutting knife is large, it can adapt to films of various sizes and the widths of various cutting edges;

[0025] 2. Connect the external air source to the air nozzle, so that the airbag expands due to the air input from the air source. After expansion, the airbag pushes the threaded block to move towards the lead screw until the threaded block is engaged with the lead screw, and then the lead screw can be rotated to adjust the cutting knife. After the adjustment is completed, only the air in the airbag needs to be sucked out by the air source, and at the same time, the threaded block is moved away from the lead screw through the disengaging member, that is, the adjustment of one cutting knife is completed. The same applies to other cutting knives. The adjustment accuracy is relatively high, and it is convenient to adjust each cutting knife individually;

[0026] 3. The constant-force coiling air drum keeps the air pipe in a relatively taut state all the time, that is, when the airbag moves away from the air nozzle, the constant-force coiling air drum unwinds, and when the airbag moves towards the air nozzle, the constant-force coiling air drum winds up, thereby avoiding phenomena such as entanglement between the air pipes or between the air pipe and the lead screw. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0028] Figure 2This is a schematic diagram of the structure of the present application mainly for showing the hidden part of the body, the part of the installation cylinder, and the controller.

[0029] Reference numerals: 1, body; 11, installation cylinder; 111, sliding groove; 112, bearing; 12, motor; 13, controller; 14, cutting knife; 141, slider; 15, electric push rod; 21, lead screw; 22, threaded block; 3, adjusting assembly; 31, airbag; 32, air pipe; 33, air nozzle; 34, elastic telescopic rod; 4, locking assembly; 41, first end face gear; 42, second end face gear; 421, handwheel; 43, magnet ring; 5, constant force coiling air drum; 61, limiting strip; 62, limiting groove. Detailed implementation mode

[0030] The following will Figure 1-2 make a further detailed description of the present application.

[0031] The embodiment of the present application discloses an edge cutting device for CPP film production. Referring to Figure 1 and Figure 2 , the edge cutting device for CPP film production includes a body 1, an installation cylinder 11 rotatably connected to the body 1, a motor 12 fixed to the body 1 and used to drive the installation cylinder 11, and a controller 13 electrically connected to the motor 12. A plurality of cutting knives 14 are slidably connected to the installation cylinder 11. In the present application, there are six cutting knives 14 and they are evenly located at both ends of the installation cylinder 11. A lead screw 21 is coaxially and rotatably connected inside the installation cylinder 11. A sliding groove 111 is formed on the installation cylinder 11. A threaded block 22 is provided on the cutting knife 14 and extends into the installation cylinder 11 and is slidably adapted to the sliding groove 111. The side of the threaded block 22 close to the lead screw 21 is threadedly adapted to the lead screw 21. An adjusting assembly 3 is provided on the installation cylinder 11 for adjusting the threaded block 22 to move in the direction close to / away from the lead screw 21. A locking assembly 4 is provided on the installation cylinder 11 for locking the lead screw 21.

[0032] Before cutting the film, first move the threaded block 22 on a corresponding cutter 14 to be threadedly connected to the lead screw 21 through the adjusting assembly 3, then release the locking assembly 4 so that the lead screw 21 can rotate relative to the mounting cylinder 11, and then rotate the lead screw 21, which can drive the threaded block 22 to move, thereby moving the cutter 14 on the mounting cylinder 11. When the cutter 14 moves to the specified position, disconnect the threaded block 22 from the lead screw 21 through the adjusting assembly 3, and then the next cutter 14 can be adjusted. When all the cutters 14 are adjusted to the specified positions, lock the lead screw 21 through the locking structure so that there is no relative displacement between the lead screw 21 and the mounting cylinder 11 to prevent the lead screw 21 from shaking when the mounting cylinder 11 rotates later. Finally, turn on the motor 12 through the controller 13 to cut the film. Since the adjustable range of the cutter 14 is large, it can adapt to films of various sizes and various cutting widths. At the same time, since the cutter 14 generally needs to cooperate with other film processing equipment, it is easy for other equipment to block the cutter 14, making it difficult for workers to reach deep into other equipment and the machine body 1 to adjust the cutter 14. However, in this application, only the adjusting assembly 3 and the lead screw 21 need to be adjusted beside the machine body 1 to change the position of the cutter 14. In addition to cutting the edges of the film, the six cutters 14 can also slit the film, further adapting to more working conditions.

[0033] Referring to Figure 2 , the adjusting assembly 3 includes an airbag 31 adhered to the side of the threaded block 22 away from the lead screw 21, an air pipe 32 communicated with the airbag 31, and a nozzle 33 fixedly connected to the end of the mounting cylinder 11 and communicated with the air pipe 32. When the airbag 31 is in a full state, the threaded block 22 is pressed against the lead screw 21. A constant-force coiling air drum 5 is also fixedly connected inside the mounting cylinder 11. The air pipe 32 is wound around the coiling air drum and communicated with the coiling air drum. The air inlet of the coiling air drum is communicated with the nozzle 33. The adjusting assembly 3 further includes a disengaging member for driving the threaded block 22 to disengage from the lead screw 21. The disengaging member is an elastic telescopic rod 34 fixedly connected to the threaded block 22 and the cutter 14 at both ends respectively. When the threaded block 22 is pressed against the lead screw 21, the elastic telescopic rod 34 is in a stretched state. A slider 141 with a solid lubricant coated on its surface is fixedly connected between the airbag 31 and the cutter 14. The solid lubricant can be graphite lubricant.

[0034] Connect an external air source such as a fan to the air nozzle 33, so that the airbag 31 is inflated by the air supply from the air source. The inflated airbag 31 pushes the threaded block 22 to move towards the lead screw 21, and the elastic telescopic rod 34 also elongates synchronously until the threaded block 22 meshes with the lead screw 21. Then, the lead screw 21 can be rotated to adjust the cutting knife 14. After the adjustment is completed, just let the air source suck out the gas in the airbag 31, and the elastic telescopic rod 34 contracts under the action of its own elastic force, thereby driving the threaded block 22 to move away from the lead screw 21, that is, the adjustment of one cutting knife 14 is completed. The process of adjusting the cutting knife 14 is relatively simple, and multiple cutting knives 14 can be adjusted one by one; when rotating the lead screw 21 to move the threaded block 22, since the surface layer of the slider 141 is attached with a lubricant, the friction between the slider 141 and the inner wall of the mounting cylinder 11 is small, so that the airbag 31 moves more smoothly, and at the same time, the damage suffered by the airbag 31 during direct friction is reduced; when the lead screw 21 drives the threaded block 22, the constant force coiling air drum 5 keeps the air pipe 32 in a relatively taut state all the time, that is, when the airbag 31 moves away from the air nozzle 33, the constant force coiling air drum 5 unwinds, and when the airbag 31 moves towards the air nozzle 33, the constant force coiling air drum 5 winds up, thereby avoiding phenomena such as entanglement between the air pipe 32 and the air pipe 32 or between the air pipe 32 and the lead screw 21.

[0035] Refer to Figure 2 As shown in the figure, the locking assembly 4 includes a first end face gear 41 fixedly connected to the end face of the mounting cylinder 11, a second end face gear 42 slidably connected to the lead screw 21, and a magnet ring 43 fixedly connected to the first end face gear 41. The second end face gear 42 has ferromagnetism and meshes with the first end face gear 41. A hand wheel 421 is fixedly connected to the second end face gear 42. A limiting member for restricting the moving direction of the second end face gear 42 is provided on the lead screw 21. The limiting member is a limiting strip 61 fixedly connected to the lead screw 21 and parallel to the length of the lead screw 21. A limiting groove 62 adapted to the limiting strip 61 is formed on the second end face gear 42.

[0036] When it is necessary to rotate the lead screw 21, just pull the second end face gear 42 away from the first end face gear 41 to make the second end face gear 42 disengage from the connection with the first end face gear 41. At this time, due to the limiting action of the limiting member, the lead screw 21 can be rotated by rotating the second end face gear 42; when it is necessary to lock the lead screw 21, just move the second end face gear 42 towards the first end face gear 41 to make the second end face gear 42 and the first end face gear 41 meshed and connected by suction. After the second end face gear 42 disengages from the first end face gear 41 and rotates, since the second end face gear 42 can only move relative to the limiting strip 61 in the length direction of the limiting strip 61, just rotating the second end face gear 42 can drive the lead screw 21 to rotate. The operation is simple and the structure is simple.

[0037] Refer toFigure 1 At both ends of the installation cylinder 11, bearings 112 are coaxially fixed. An electric push rod 15 is fixed on the machine body 1. A lifting block is slidably connected to the machine body 1. The bearing 112 is fixed on the lifting block. The output end of the electric push rod 15 is fixedly connected to the lifting block. The electric push rod 15 is electrically connected to the controller 13. When cutting films with different thicknesses, different degrees of pressure need to be applied to the films. The telescopic degree of the electric push rod 15 can be adjusted only through the controller 13, so as to adjust the height of the installation cylinder 11 and further adjust the pressure of the cutting knife 14 on the film. The adjustment process is time-saving and labor-saving, and the adjustment accuracy is relatively high.

[0038] The implementation principle of an edge cutting device for CPP film production in an embodiment of the present application is as follows: Before cutting the film, an external air source such as a blower is connected to the air nozzle 33 corresponding to the cutting knife 14 to be adjusted, so that the airbag 31 expands due to the air supply from the air source. The expanded airbag 31 pushes the threaded block 22 to move towards the direction close to the lead screw 21, and the elastic telescopic rod 34 also elongates synchronously until the threaded block 22 is meshed and connected with the lead screw 21. The second end face gear 42 is pulled to disconnect the connection between the second end face gear 42 and the first end face gear 41, and then the hand wheel 421 can be rotated to adjust the cutting knife 14; after the adjustment is completed, the second end face gear 42 is pushed back to be meshed and connected with the first end face gear 41, and then the gas in the airbag 31 is sucked out through the air source. The elastic telescopic rod 34 contracts under the action of its own elastic force, and then drives the threaded block 22 to move away from the lead screw 21, that is, the adjustment of one cutting knife 14 is completed. The adjustment process is relatively simple, and because the adjustable range of the cutting knife 14 is large, it can adapt to films of various sizes and various cutting widths.

[0039] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An edge cutting device for CPP film production, comprising a body (1), a mounting cylinder (11) rotatably connected to the body (1), a motor (12) fixed to the body (1) and used to drive the mounting cylinder (11), and a controller (13) electrically connected to the motor (12), characterized in that: A plurality of cutters (14) are slidably connected to the mounting tube (11), a screw rod (21) is coaxially rotatably connected inside the mounting tube (11), a slide groove (111) is provided on the mounting tube (11), a threaded block (22) is provided on the cutter (14) and extends into the mounting tube (11) and is slidably matched with the slide groove (111), a side of the threaded block (22) close to the screw rod (21) is threadably matched with the screw rod (21), an adjustment component (3) is provided on the mounting tube (11) for adjusting the threaded block (22) to move in a direction close to the screw rod (21) or away from the screw rod (21), and a locking component (4) is provided on the mounting tube (11) for locking the screw rod (21).

2. The edge cutting device for CPP film production according to claim 1, characterized in that: The adjusting assembly (3) comprises an air bag (31) adhered to a side of the threaded block (22) away from the screw rod (21), an air pipe (32) connected to the air bag (31), and an air nozzle (33) fixed to an end of the mounting tube (11) and connected to the air pipe (32). When the air bag (31) is in a filled state, the threaded block (22) is tightly pressed against the screw rod (21). The adjusting assembly (3) further comprises a disengagement member for driving the threaded block (22) to disengage from the screw rod (21).

3. The edge cutting device for CPP film production according to claim 2, characterized in that: The disengagement member is an elastic telescopic rod (34) whose two ends are respectively fixed to the threaded block (22) and the cutter (14); when the threaded block (22) and the screw rod (21) are pressed against each other, the elastic telescopic rod (34) is in a stretched state.

4. The edge cutting device for CPP film production according to claim 2, characterized in that: A sliding block (141) with a surface coated with solid lubricant is fixedly connected between the airbag (31) and the cutter (14).

5. The edge cutting device for CPP film production according to claim 2, characterized in that: A constant force hose reel air drum (5) is arranged in the installation cylinder (11), the air pipe (32) is wound around the hose reel air drum, and the air nozzle (33) is connected to the air inlet of the hose reel air drum.

6. The edge cutting device for CPP film production according to claim 1, characterized in that: The locking assembly (4) comprises a first end face gear (41) fixedly connected to the end face of the mounting cylinder (11), a second end face gear (42) slidably connected to the screw rod (21), and a magnet ring (43) fixedly connected to the first end face gear (41), the second end face gear (42) having ferromagnetism and meshingly matching with the first end face gear (41), and a limiter for limiting the moving direction of the second end face gear (42) is provided on the screw rod (21).

7. The edge cutting device for CPP film production according to claim 6, characterized in that: The limiting member is a limiting strip (61) fixedly connected to the screw rod (21), and the second end face gear (42) is provided with a limiting groove (62) matched with the limiting strip (61).

8. The edge cutting device for CPP film production according to claim 1, characterized in that: Bearings (112) are coaxially fixedly connected to both ends of the mounting cylinder (11), an electric push rod (15) connected to the bearing (112) is fixedly connected to the machine body (1), and the electric push rod (15) is electrically connected to the controller (13).

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