Residual roll packing machine and residual roll packing system

Abstract

The utility model discloses a remnant roll packing machine and remnant roll packing system.The remnant roll packing machine comprises a rack assembly, the rack assembly is connected with a machine head assembly through a moving structure, the machine head assembly is connected with a belt groove system, one end of a steel belt is arranged in the belt groove system, and the other end of the steel belt is arranged on a binding belt distribution assembly; the moving structure and the grooved system are respectively connected with the pneumatic system; the pneumatic system is connected with the electrical part; the belt groove system comprises a holding arm, a packing belt guide groove is formed in the holding arm, and a steel belt is arranged in the packing belt guide groove. The residual roll packing system comprises a mechanical arm, the mechanical arm is movably arranged on a track, a residual roll taking position and a residual roll unloading position are arranged on the side face of the track, the residual roll taking position is provided with a feeding port, the residual roll unloading position is provided with a sleeve unloading device, the residual roll packing system further comprises a residual roll packing position, the residual roll packing position is provided with a residual roll packing machine, and the feeding port and the residual roll packing machine are located on the two sides of the track respectively. According to the utility model, automation is realized, the production efficiency is improved, and safe and efficient production is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a residual volume packing machine and residual volume packing system, which are applied to a non-ferrous metal aluminum strip cold rolling mill and belong to the technical field of metal rolling and packaging. BACKGROUND

[0002] The products after metal rolling processing are used in multiple industries, and the rolled products and unqualified products after rolling need to be packed for transportation or transfer within the factory.

[0003] The manipulator can unload the residual volume on the reel shaft to the platform of the unloading sleeve device. The unloading sleeve device is used to store a certain number of residual volumes.

[0004] The residual volumes are divided into two types. One type is residual volume without a sleeve, and the cross section of the residual volume is circular at this time, which is referred to as a circular residual volume. The maximum diameter of the residual volume is not more than 800 mm. The other type is residual volume with a sleeve. The residual volume and the sleeve are connected together, and the two need to be separated. Generally, the residual volume is separated by the manipulator and the decoiler (or the coiler) in cooperation with the residual volume. The residual volume is separated by the manipulator and the decoiler (or the coiler) in cooperation with the residual volume. The purpose of the residual volume is to separate the residual volume and the sleeve, so that the sleeve can be taken out after the residual volume with the sleeve is taken down. The cross section of the residual volume at this time is approximately elliptical, which is referred to as an elliptical residual volume. The short side of the residual volume is not more than 800 mm, and the long side is not more than 1000 mm.

[0005] The manipulator is a connecting rod structure and is integrally installed on a movable trolley. The movable trolley can move in the axial direction of the reel. The manipulator is composed of a clamp device, a swing arm, a movable trolley, and a base. The clamp device is driven by a hydraulic cylinder to clamp or release the clamp arm. At the same time, the oil cylinder arranged on the swing arm can drive the clamp device to rotate around the hinge shaft by a certain angle. The movable trolley can move in the axial direction of the reel along the track. The movable trolley drive is an electric motor.

[0006] The manipulator grasps the residual volume at the reel position of the decoiler or the coiler. Both types of residual volumes are clamped by the manipulator, and the residual volume is separated from the reel by the reel diameter reduction and the movement of the manipulator. Then the manipulator moves longitudinally to the unloading sleeve device position, and the manipulator with the residual volume swings and stops at a certain position. The position is about 1 meter away from the platform of the unloading sleeve device. Then the residual volume is packed. The operator needs to stand on the platform of the unloading sleeve device and manually pack the residual volume with a simple packing tool. After the packing is completed, the operator leaves, the manipulator continues to swing, reaches the limit position of the swing, and places the residual volume on the platform of the unloading sleeve device. Thus, the residual volume packing work is completed.

[0007] The entire process is operated manually by the manipulator. Other processes in this area need to be stopped. The surface of the platform of the unloading sleeve device is an inclined surface, which is relatively high from the ground and has oil stains. The residual volume has great elasticity, and if the residual volume is accidentally loosened, the operator is easily injured. The manual packing of the residual volume at this position is a high-risk work. SUMMARY

[0008] The technical problem to be solved by the utility model is how to automatically bundle the aluminum foil residual roll.

[0009] In order to solve the above technical problem, the utility model discloses a residual roll packing machine, which is characterized by comprising a rack assembly, the rack assembly is connected with a head assembly through a moving structure, a slotted system is connected to the head assembly, a steel band for bundling the aluminum foil residual roll is arranged in the slotted system, the other end of the steel band is arranged on a band distribution assembly, the moving structure and the slotted system are connected with a pneumatic system respectively, and the pneumatic system is connected with an electrical part.

[0010] Preferably, the band distribution assembly comprises a winding wheel with the steel band wound thereon and a belt wheel for supporting and transmitting the steel band, and the belt wheel is arranged on the rack assembly.

[0011] Preferably, the cross section of the arm is in an oval shape.

[0012] Preferably, the oval arm is matched with an oval residual roll with a short side of no more than 800 mm and a long side of no more than 1000 mm.

[0013] Preferably, the moving structure comprises a horizontal moving mechanism for driving the slotted system to move horizontally on the rack assembly and a lifting mechanism for driving the slotted system to move up and down on the rack assembly, and the horizontal moving mechanism and the lifting mechanism are connected with the pneumatic system respectively.

[0014] Preferably, the horizontal moving mechanism and the lifting mechanism are connected, one of the horizontal moving mechanism and the lifting mechanism is connected with the rack assembly, and the other is connected with the slotted system.

[0015] Preferably, the head assembly and the slotted system are both arranged in an inclined manner, and the inclination angle is consistent with the angle between the long side and the short side of the oval aluminum foil residual roll when the residual roll is clamped by the mechanical hand and conveyed to the residual roll packing position.

[0016] A residual roll packing system comprises a mechanical hand, the mechanical hand is movably arranged on a track, a plurality of stations are arranged on the side of the track, and the stations are a residual roll taking station and a residual roll unloading station, the residual roll taking station is provided with a feeding port for providing the aluminum foil residual roll with a sleeve, and the residual roll unloading station is provided with an unloading sleeve device, characterized in that the system further comprises a residual roll packing station, the residual roll packing station is provided with the above-mentioned residual roll packing machine, and the feeding port and the residual roll packing machine are respectively arranged on the two sides of the track.

[0017] Preferably, the mechanical arm comprises a movable trolley, a swing arm, a clamp device, the movable trolley is arranged on a track, one end of the swing arm is rotatably connected to the movable trolley through a hinge shaft, the other end of the swing arm is connected to the clamp device for clamping the residual aluminum foil roll, the middle position of the swing arm is connected to one end of an oil cylinder, the other end of the oil cylinder is connected to the movable trolley, and the positions where the one end of the swing arm and the other end of the oil cylinder are connected to the movable trolley are respectively located on the two sides of the movable trolley.

[0018] Preferably, the clamp device comprises a hydraulic motor, the hydraulic motor is fixed on the swing arm, the rotating end of the hydraulic motor is connected to one end of a connecting rod mechanism through a gear mechanism and a rack and pinion mechanism, the other end of the connecting rod mechanism is connected to one end of a clamp arm, the middle end of the clamp arm is rotatably connected to one end of the swing arm through a rotating shaft, and the rotation of the driving end of the hydraulic motor drives the other end of the connecting rod mechanism to stretch or retract, so as to drive the other end of the clamp arm to open or close, and the residual aluminum foil roll is loosened or clamped.

[0019] By the utility model, after the residual roll is intelligently packed online, the residual roll packing is realized by machine operation instead of manual operation, that is, the residual roll packing is realized automatically, the production efficiency is improved, manual participation in packing is no longer needed, and safe and efficient production is realized.

[0020] By the utility model, the operator manually packs the residual roll on the platform surface of the sleeve device, another packing station is opened, the operator is prevented from being injured by the accidental loosening of the residual roll, the residual roll is automatically packed by the residual roll packing machine, manual packing is avoided, manual labor is reduced, and the safety of the operator is ensured. The packing is compact, and the accidental loosening of the residual roll is avoided.

[0021] The driving of the clamp device is changed from the existing hydraulic cylinder driving to the hydraulic motor driving in the utility model, and the shortcoming that there is only one speed when the hydraulic cylinder is used to loosen the residual roll is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of a residual roll packing system;

[0023] Figure 2 It is a schematic view of the distribution of stations on the two sides of the track;

[0024] Figure 3 It is a sectional view of a mechanical arm;

[0025] Figure 4 It is Figure 3 It is a sectional view of a residual roll packing system;

[0026] Figure 5 It is a top view of a residual roll packing machine;

[0027] Figure 6 It is a front view of a residual roll packing machine;

[0028] Figure 7 It is a right view of a residual roll packing machine.

[0029] Wherein:

[0030] A, residual roll taking position; B, residual roll unloading position; C, residual roll packing position; D, center line of the uncoiler reel;

[0031] 1, aluminum foil residual roll; 2, manipulator; 3, sleeve unloading device; 4, residual roll packing machine; 5, track;

[0032] 21, clamp device; 22, movable trolley; 23, swing arm;

[0033] 211, hydraulic motor; 212, gear mechanism; 213, gear rack mechanism; 214, connecting rod mechanism;

[0034] 401, frame assembly; 402, transverse movement mechanism; 403, lifting mechanism; 404, slotted system; 405, machine head assembly; 406, binding tape distribution assembly; 407, steel belt; 408, pneumatic system; 409, electrical part. DETAILED DESCRIPTION

[0035] In order to make the utility model more obvious and easy to understand, the preferred embodiment is described in detail below with the help of the drawings.

[0036] The utility model provides a residual roll packing system, as shown in Figure 1 、 Figure 2 Fig. 1, which includes residual roll packing machine 4, track 5, sleeve unloading device 3, manipulator 2, manipulator 2 is slidably arranged on track 5, the side of track 5 is provided with a plurality of stations, which are residual roll taking position A, residual roll unloading position B and residual roll packing position C respectively, residual roll taking position A is provided with a feed inlet for providing aluminum foil residual roll 1 with sleeve, residual roll unloading position B is provided with sleeve unloading device 3, and residual roll packing position C is provided with residual roll packing machine 4, wherein the feed inlet and residual roll packing machine 4 are respectively located on both sides of track 5.

[0037] As shown in Figure 3As shown, the manipulator 2 includes a movable trolley 22, a swing arm 23, and a clamp device 21, the movable trolley 22 is slidably arranged on the track 5, one end of the swing arm 23 is rotatably connected with the movable trolley 22 through a hinge shaft, the other end of the swing arm 23 is connected with the clamp device 21 for clamping the aluminum foil residual roll 1 with sleeve, the middle position of the swing arm 23 is connected with one end of an oil cylinder, the other end of the oil cylinder is connected with the movable trolley 22, the position of the one end of the swing arm 23 connected with the movable trolley 22 and the position of the other end of the oil cylinder are respectively located on both sides of the movable trolley 22, and the swing arm 23 can be swung along the direction perpendicular to the sliding direction of the movable trolley 22 through the oil cylinder. The movable trolley 22 can move in the axial direction of the aluminum foil residual roll 1 (i.e. a winding drum) with sleeve along the track 5, and the movable trolley 22 is driven to move by an electric motor.

[0038] As shown in Figure 3 , Figure 4 , the clamp device 21 includes a hydraulic motor 211, a gear mechanism 212, a gear and rack mechanism 213, and a connecting rod mechanism 214, the hydraulic motor 211 is fixed on the swing arm 23, the rotating end of the hydraulic motor 211 is connected with one end of the connecting rod mechanism 214 through the gear mechanism 212 and the gear and rack mechanism 213, the other end of the connecting rod mechanism 214 is connected with one end of a clamp arm, and the middle end of the clamp arm is rotatably connected with the other end of the swing arm 23. The rotation of the driving end of the hydraulic motor 211 drives the other end of the connecting rod mechanism 214 to stretch or retract, so as to drive the other end of the clamp arm to open or close, for loosening or clamping the aluminum foil residual roll 1 with sleeve. The driving end of the hydraulic motor 211 is connected with the gear mechanism 212, one end of the gear mechanism 212 is connected with the gear and rack mechanism 213, and one end of the connecting rod mechanism 214 is sleeved on the gear and rack mechanism 213. That is, the clamp device 21 is driven by the hydraulic motor 211 to clamp or loosen the clamp arm.

[0039] The utility model discloses the drive of clamp device 21 is changed from the existing hydraulic cylinder drive to the hydraulic motor 211 drive in the utility model, and the advantage of the hydraulic motor 211 drive is that the speed function of clamp device 21 can be realized through the button on the operation table, has quick loosening-slow loosening-stop-slow clamping-quick clamping button, and it is especially suitable for point action loosening roll, and the shortcoming that only one speed is avoided when using hydraulic cylinder point action loosening roll.

[0040] The utility model in the configuration of existing system, the clamp device 21 of manipulator 2 has been transformed, still increased a residual roll packing machine's work station, and increased a residual roll packing machine.

[0041] As shown in Figures 5-7 , the residual roll packing machine is composed of a frame assembly 401, a horizontal moving mechanism 402, a lifting mechanism 403, a slotted system 404, a machine head assembly 405, a binding tape distribution assembly 406, a steel belt 407, a pneumatic system 408 and an electrical part 409.

[0042] The rack assembly 401 is fixed on the ground, and the rack assembly 401 is connected with the belt slot system 404 through the moving structure, the belt slot system 404 is used for clamping the aluminum foil residual roll 1 with a belt sleeve, and the aluminum foil residual roll 1 with the belt sleeve is bundled through the steel belt 407 connected in the belt slot system 404, so that the packaging is realized. The head end of the steel belt 407 is arranged in the belt slot system 404, and the other end is arranged on the belt distribution assembly 406, the steel belt 407 is connected with the head assembly 405 through the part close to the head end, the tension is controlled through the head assembly 405, the belt distribution assembly 406 includes a winding wheel on which the steel belt 407 is wound and a belt wheel supporting and transmitting the steel belt, the belt wheel is arranged on the rack assembly 401, and the belt slot system 404, the horizontal moving mechanism 402 and the lifting mechanism 403 are connected with the pneumatic system 408 respectively, and the pneumatic system 408 is connected with the electrical part 409.

[0043] The head assembly 405 is used for tensioning the steel belt 407 to a pre-set tension, occlusion and cutting the belt; the pneumatic system 408 is used for controlling the steel belt 407 transmission, providing and adjusting the tension of the steel belt 407; and the electrical part 409 is used for controlling the operation of the whole residual roll packaging machine.

[0044] The belt slot system 404 includes a clamping arm that can be opened and closed and is suitable for circular residual rolls and elliptical residual rolls, the clamping arm is provided with a packaging belt guide slot, and the steel belt 407 for bundling the aluminum foil residual roll 1 with a belt sleeve is arranged in the packaging belt guide slot. The cross section of the clamping arm is elliptical, and the clamping arm can meet the requirement of packaging an elliptical residual roll with a short side not more than 800 mm and a long side not more than 1000 mm.

[0045] The moving structure includes the horizontal moving mechanism 402 and the lifting mechanism 403, which are respectively used for driving the belt slot system 404 to move left and right and up and down on the rack assembly 401. The horizontal moving mechanism 402 and the lifting mechanism 403 are connected, one of the horizontal moving mechanism 402 and the lifting mechanism 403 is connected with the rack assembly 401, and the other is connected with the belt slot system 404. (This structure is common in the prior art, and therefore will not be described in detail)

[0046] The head assembly 405 is inclined at a certain angle with the belt slot system 404, and the angle is consistent with the angle between the long side and the short side of the elliptical residual roll when the elliptical residual roll is clamped by the mechanical hand 2 and conveyed to the residual roll packaging position C.

[0047] The head assembly 405 is miniaturized and provided with the horizontal moving mechanism 402, which cooperates with the lifting mechanism 403 to realize the single-side packaging of the residual roll and the requirement of two-side packaging required by the user.

[0048] The principle of the packing of the slotted system 404 is the same as that of the existing packing machine (for example, the model PKW-VS31L-SU packing machine produced by Tianjin Pakewei Packaging Equipment Co., Ltd.), and the working principles of the head assembly 405, the pneumatic system 408, and the electrical part 409 are the same as those of the existing packing machine (for example, the model PKW-VS31L-SU packing machine produced by Tianjin Pakewei Packaging Equipment Co., Ltd.).

[0049] When the manipulator 2 moves to the residual roll packing position C and stops moving, a signal is sent to the residual roll packing machine 4, and the residual roll packing machine 4 will be automatically started. The working process of the residual roll packing machine 4 is as follows:

[0050] Step 1. Move to the appropriate position (i.e. the position where the slotted system 404 can wrap the aluminum foil residual roll 1 with the sleeve) by the lifting mechanism 403, and the arms of the slotted system 404 are closed to form a combined guide channel.

[0051] Step 2. The head assembly 405 transfers the steel belt 407 from the belt dispensing assembly 406 to the positioning.

[0052] Step 3. The head assembly 405 is moved close to the aluminum foil residual roll 1 with the sleeve by the horizontal moving mechanism 402 until it is wrapped outside the aluminum foil residual roll 1 with the sleeve, and the steel belt 407 is started to be tightened.

[0053] Step 4. The head assembly 405 tightens the steel belt 407 to a pre-adjusted tension, and starts the action of packing and combining the steel belt 407 (clamping and cutting).

[0054] Step 5. The slotted system 404 is opened, and the lifting mechanism 403 returns to the starting position.

[0055] Step 6. The horizontal moving mechanism 402 moves to the other end.

[0056] Step 7. Repeat steps 1-4 to complete the second packing of the aluminum foil residual roll 1 with the sleeve.

[0057] Step 8. The head assembly 405 and the slotted system 404 return to the initial position.

[0058] Step 9. After completing the second packing action, the residual roll packing machine 4 will be at the starting position and send a signal to the manipulator 2, and the manipulator 2 will deliver the aluminum foil residual roll 1 with the sleeve to the residual roll unloading position B and unload the aluminum foil residual roll 1 with the sleeve.

[0059] The automatic packing process of a residual roll packing system for a circular residual roll is as follows:

[0060] The automatic packing button is started, the clamp arm of the clamp device 21 is opened and swings with the swing arm 23 to the working position, the clamp device 21 is aligned with the center of the reel of the sleeve-equipped aluminum foil residual roll 1; the movable trolley 22 moves in the axial direction of the reel, stops at the reel position (i.e. the residual roll taking position A); the clamp arm of the clamp device 21 is clamped to hold the residual roll (i.e. the sleeve-equipped aluminum foil residual roll 1), the reel of the unwinder is shrunk, the movable trolley 22 reversely exits and stops at the position of the sleeve removing device 3 (i.e. the residual roll removing position B); the swing arm 23 swings to the side of the sleeve removing device 3 and stops at a specific position, the mechanical arm 2 continues to move longitudinally, advances a distance to reach the position of the residual roll packer 4 (i.e. the residual roll packing position C), the residual roll packer 4 starts the automatic packing operation, after the packing is completed, the residual roll packer 4 returns to the original state, the mechanical arm 2 with the packed residual roll returns from the residual roll packing position C to the residual roll removing position B, at this position, the mechanical arm 2 continues to swing and reaches the limit position of the swing, when the clamp device 21 and the swing arm 23 reach the residual roll placing position, the clamp device 21 is opened to place the packed residual roll on the platform of the sleeve removing device 3, thus the residual roll packing work is completed.

[0061] The automatic packing process of the residual roll packing system on the elliptical residual roll is as follows:

[0062] The automatic packing button is started, the clamp arm of the clamp device 21 is opened and swings with the swing arm 23 to the working position, the clamp device 21 is aligned with the center of the reel of the sleeve-equipped aluminum foil residual roll 1; the movable trolley 22 moves in the axial direction of the reel, stops at the reel position (i.e. the residual roll taking position A); the clamp arm of the clamp device 21 is clamped to hold the residual roll (i.e. the sleeve-equipped aluminum foil residual roll 1), the reel of the unwinder is shrunk, the movable trolley 22 reversely exits and stops at the position of the sleeve removing device 3 (i.e. the residual roll removing position B); the swing arm 23 swings to the side of the sleeve removing device 3 and stops at a specific position, the mechanical arm 2 continues to move longitudinally, advances a distance to reach the position of the residual roll packer 4 (i.e. the residual roll packing position C), the residual roll packer 4 starts the automatic packing operation, after the packing is completed, the residual roll packer 4 returns to the original state, the mechanical arm 2 with the packed residual roll returns from the residual roll packing position C to the residual roll removing position B, at this position, the mechanical arm 2 continues to swing and reaches the limit position of the swing, when the clamp device 21 and the swing arm 23 reach the residual roll placing position, the clamp device 21 is opened to place the packed residual roll on the platform of the sleeve removing device 3, thus the residual roll packing work is completed.

Claims

1. A residual volume packing machine, characterized by, The application relates to a residual roll packing machine, which comprises a rack assembly (401), a head assembly (405) connected to the rack assembly (401) through a moving structure, a belt groove system (404) connected to the head assembly (405), one end of a steel belt (407) for bundling aluminum foil residual rolls (1) arranged in the belt groove system (404), the other end of the steel belt (407) arranged on a belt distribution assembly (406), the moving structure and the belt groove system (404) connected to a pneumatic system (408) respectively, the pneumatic system (408) connected to an electrical part (409), the belt groove system (404) comprising openable and closable arms capable of adapting to the shape of the residual rolls after being closed, the arms provided with a packing belt guide groove, and the steel belt (407) arranged in the packing belt guide groove.

2. A residual volume packer according to claim 1, characterized in that The belt distribution assembly (406) comprises a winding wheel on which the steel belt (407) is wound and a belt wheel for supporting and transmitting the steel belt, and the belt wheel is arranged on the rack assembly (401).

3. A residual volume packer according to claim 1, characterized in that The arms are in the shape of an ellipse.

4. A residual volume packer according to claim 3, characterised in that The arms are matched with the residual rolls which are in the shape of an ellipse with a short side of not more than 800 mm and a long side of not more than 1000 mm.

5. A residual volume packer according to claim 1, wherein, The moving structure comprises a transverse moving mechanism (402) for driving the belt groove system (404) to move transversely on the rack assembly (401) and a lifting mechanism (403) for driving the belt groove system (404) to move up and down on the rack assembly (401), and the transverse moving mechanism (402) and the lifting mechanism (403) are connected to the pneumatic system (408) respectively.

6. A residual volume packer according to claim 5, characterised in that The transverse moving mechanism (402) and the lifting mechanism (403) are connected, one of the transverse moving mechanism (402) and the lifting mechanism (403) is connected to the rack assembly (401), and the other is connected to the belt groove system (404).

7. A residual volume packer according to claim 1, wherein, The head assembly (405) and the belt groove system (404) are both arranged to be inclined, and the inclination angle is consistent with the angle between the long side and the short side of the aluminum foil residual roll (1) in the shape of an ellipse when the aluminum foil residual roll (1) is clamped by the mechanical hand (2) and conveyed to a residual roll packing position (C).

8. A scrap packaging system, comprising a robotic arm (2), the robotic arm (2) being movably mounted on a track (5), the track (5) having multiple workstations on its side, namely a scrap take-up station (A) and a scrap unload station (B), the scrap take-up station (A) having an inlet for providing aluminum foil scrap rolls (1) with sleeves, and the scrap unload station (B) having a sleeve unloading device (3), characterized in that, The application further relates to a residual roll packing position (C) provided with the residual roll packing machine (4) according to any one of claims 1 to 7, and an inlet and the residual roll packing machine (4) are arranged on the two sides of a track (5) respectively.

9. A system for packing offcut rolls as claimed in claim 8, characterised in that, The mechanical hand (2) comprises a movable trolley (22), a swing arm (23) and a clamp device (21), the movable trolley (22) is arranged to move on the track (5), one end of the swing arm (23) is rotatably connected to the movable trolley (22) through a hinge shaft, the other end of the swing arm (23) is connected to the clamp device (21) for clamping the aluminum foil residual roll (1), an oil cylinder is connected to the middle position of the swing arm (23), the other end of the oil cylinder is connected to the movable trolley (22), and the positions of the one end of the swing arm (23) and the other end of the oil cylinder connected to the movable trolley (22) are arranged on the two sides of the movable trolley (22) respectively.

10. A system for packing offcut rolls as claimed in claim 9, characterised in that, The clamp device (21) comprises a hydraulic motor (211) fixed on the swing arm (23), the rotating end of the hydraulic motor (211) is connected with one end of a connecting rod mechanism (214) through a gear mechanism (212) and a gear rack mechanism (213), the other end of the connecting rod mechanism (214) is connected with one end of a clamp arm, the middle end of the clamp arm is rotatably connected to the other end of the swing arm (23) through a rotating shaft; the other end of the connecting rod mechanism (214) is driven to stretch or retract through the rotation of the driving end of the hydraulic motor (211), so that the other end of the clamp arm is driven to open or close, and the aluminum foil residual roll (1) is loosened or clamped.

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