A film edge material cutting device

Abstract

The present invention discloses a film edge material cutting device, which includes a frame, a swing arm, a moving knife arranged on the swing arm, a spring, a fixed knife arranged on the frame, and a swing cylinder; one end of the swing arm is sleeved on the main shaft of the swing cylinder through a one-way bearing, one end of the spring is fixed on the frame, and the other end is fixed on the swing arm. The swing cylinder is used to drive the swing arm to swing so that the spring obtains the maximum tensile amount. After the spring obtains the maximum tensile amount, it drives the swing arm to swing through the contraction force, so that the moving knife and the fixed knife cooperate to cut the edge material. The film edge material cutting device provided by the present invention can drive the moving knife to swing quickly during high-speed winding of the film or when the machine stops, so that the moving knife and the fixed knife cooperate to quickly cut the edge material, eliminate the safety hazards brought by manual edge cutting, improve the automation level of film winding, and facilitate the improvement of work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of film winding, and particularly relates to a film edge material cutting device. Background Art

[0002] During the film winding process, it is necessary to cut the film into widths of different product specifications. After the film is cut, it will form a normally wound film and edge materials. It is necessary to recycle the cut edge materials online. When the edge materials need to be recycled after being cut, generally, the edge materials located next to the edge material recovery pipe are manually torn to disconnect the edge materials, forming two sections of edge materials. Then, the free ends of the two sections of edge materials (i.e., the torn parts of the edge materials) are both placed into the edge material recovery pipe, thereby realizing the online recycling of the edge materials. Since the edge cutting operation is often carried out when the film winder is in a high-speed winding working state, the method of manually tearing the edge materials has great potential safety hazards. Therefore, there is an urgent need for a device that can automatically cut the edge materials.

[0003] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0004] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present invention is to provide a film edge material cutting device, aiming to automatically cut the edge materials and eliminate the potential safety hazards brought by manual edge cutting.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A film edge material cutting device includes a frame, a swing arm, a moving knife arranged on the swing arm, a spring, a fixed knife arranged on the frame, and a swing cylinder; one end of the swing arm is sleeved on the main shaft of the swing cylinder through a one-way bearing. One end of the spring is fixed on the frame, and the other end is fixed on the swing arm. The swing cylinder is used to drive the swing arm to swing so that the spring obtains the maximum tensile amount. After the spring obtains the maximum tensile amount, it drives the swing arm to swing through the contraction force, so that the moving knife and the fixed knife cooperate to cut the edge materials.

[0007] The connecting end of the swing arm is provided with a stepped hole. The main shaft of the swing cylinder extends into the stepped hole. The one-way bearing is installed in the stepped hole. The main shaft of the swing cylinder is also sleeved with a spacer sleeve. An end cover is fixed on the swing arm, and the end cover presses the spacer sleeve on the one-way bearing.

[0008] A rolling bearing is arranged between the end cover and the main shaft of the swing cylinder. A gland is arranged at the end of the main shaft of the swing cylinder, and the gland is used to press the rolling bearing on the spacer sleeve.

[0009] A support is arranged on the frame. A first mounting piece is pivotally connected to the support, and a second mounting piece is pivotally connected to the end cover. The first mounting piece and the second mounting piece are connected by the spring.

[0010] There are two springs. One first connection hole is respectively opened on two adjacent corners of the first mounting piece, and one second connection hole is respectively opened on two adjacent corners of the second mounting piece. The two springs are parallel to each other. One end of each spring is fixed in the first connection hole, and the other end is fixed in the second connection hole.

[0011] At least two first waist-shaped holes extending transversely are provided on the support, and first threaded holes corresponding to the first waist-shaped holes are provided on the frame. One screw penetrates through the first waist-shaped hole of each support, and each screw is screwed into the corresponding first threaded hole.

[0012] The fixed knife is arranged on the frame through a tool holder. The fixed knife is horizontally arranged on the tool holder. At least two second waist-shaped holes extending vertically are provided on the tool holder, and second threaded holes corresponding to the second waist-shaped holes are provided on the frame. One screw penetrates through the second waist-shaped hole of each tool holder, and each screw is screwed into the corresponding second threaded hole.

[0013] The swing arm is L-shaped and includes a circular ring connection part, a corner part and a tool mounting part connected in sequence. The moving knife is arranged in the tool mounting part, and the circular ring connection part is sleeved on the main shaft of the swing cylinder.

[0014] A protective cover is provided on the frame.

[0015] Beneficial effects:

[0016] Compared with the existing manual edge cutting method, the film edge material cutting device provided by the present invention can drive the moving knife to swing quickly when the film is being wound at high speed or when the machine stops, so that the moving knife and the fixed knife cooperate to quickly cut the edge material, eliminate the safety hazards brought by manual edge cutting, improve the automation level of film winding, and facilitate the improvement of work efficiency. Description of the drawings

[0017] Figure 1 It is a schematic structural diagram of the film edge material cutting device provided by the present invention in the initial state.

[0018] Figure 2 It is a schematic structural diagram of the film edge material cutting device provided by the present invention when cutting the edge.

[0019] Figure 3 It is a schematic structural diagram of the film edge material cutting device provided by the present invention after cutting the edge.

[0020] Figure 4 It is a top view of the film edge material cutting device provided by the present invention.

[0021] Figure 5A cross-sectional view of the film edge trimming device provided by the present invention.

[0022] Figure 6 An assembly drawing of the film edge trimming device provided by the present invention.

[0023] Figure 7 A schematic structural diagram of the film edge trimming device provided by the present invention after installing the protective cover.

[0024] Explanation of main component symbols: 1 - frame, 2 - swing arm, 3 - moving knife, 4 - spring, 5 - fixed knife, 6 - swing cylinder, 7 - one-way bearing, 21 - stepped hole, 22 - spacer sleeve, 23 - end cover, 24 - rolling bearing, 25 - gland, 8 - support, 81 - first mounting piece, 82 - second mounting piece, 83 - first connection hole, 84 - second connection hole, 85 - first waist-shaped hole, 11 - first threaded hole, 12 - second threaded hole, 9 - protective cover, 51 - tool holder, 52 - second waist-shaped hole. Detailed implementation manners

[0025] The present invention provides a film edge trimming device. To make the purpose, technical solution and effects of the present invention clearer and more definite, the following further elaborates on the present invention with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0026] Please refer to Figures 1-6 , the present invention provides a film edge trimming device, including a frame 1, a swing arm 2, a moving knife 3 arranged on the swing arm 2, a spring 4, a fixed knife 5 arranged on the frame 1, and a swing cylinder 6; one end of the swing arm 2 is sleeved on the main shaft 61 of the swing cylinder 6 through a one-way bearing 7, one end of the spring 4 is fixed on the frame 1, and the other end is fixed on the swing arm 2. The swing cylinder 6 is used to drive the swing arm 2 to swing so that the spring 4 obtains the maximum tensile amount. After the spring 4 obtains the maximum tensile amount, it drives the swing arm 2 to swing through the contraction force, so that the moving knife 3 and the fixed knife 5 cooperate to cut the edge material 92.

[0027] It should be noted that the swing arm 2 is L-shaped, and it includes a circular ring connection part, a corner part and a tool mounting part connected in sequence. The moving knife 3 is arranged in the tool mounting part, and the circular ring connection part is sleeved on the main shaft 61 of the swing cylinder 6. The one-way bearing 7, also called an overrunning clutch, can be purchased on the market. Figure 4 The direction indicated by the hollow arrow in is the film conveying direction.

[0028] The following briefly describes the working principle: When the film edge trimming device is in the initial state, the moving knife 3 faces upward. Driven by the swing cylinder 6, the moving knife 3 remains stationary all the time, and the spring 4 is in the state of the maximum tensile amount. The edge material 92 is located above the fixed knife 5 (see Figure 1As shown in the figure, when the edge material needs to be recycled, the swing cylinder 6 swings in the set direction (i.e., the direction indicated by the hollow arrow in Figure 1 , and this direction is counterclockwise) under the action of the solenoid valve. Under the action of the one-way bearing 7, at this time, the swing arm 2 is in a freely rotatable state with the main shaft of the swing cylinder 6. After the swing arm 2 loses the acting force of the swing cylinder, under the action of the contraction force of the spring 4, it obtains a great rotational kinetic energy, drives the moving knife 3 to swing towards the fixed knife 5 at a very high speed, so that the moving knife 3 and the fixed knife 5 cooperate to form a cutting opening, and then cut off the edge material 92 located in the cutting opening (see Figure 2 ); then the swing arm 2 continues to displace due to inertia to the position shown in Figure 3 , the moving knife 3 faces downwards, and the spring 4 is in a state of minimum tensile amount; finally, the swing cylinder 6 drives the moving knife 3 to reset to the initial state (i.e., the moving knife swings and resets in the direction indicated by the hollow arrow in Figure 3 , and this direction is clockwise), so that the spring 4 regains the maximum tensile amount, waits for the next edge cutting, and at the same time avoids interference between the moving knife 3 and the edge material. An air blower is provided beside the edge material recovery pipe 91, and the air blower sucks the cut edge material 92 into the edge material recovery pipe 91 to recycle the edge material online. It should be noted that the swing range of the swing cylinder is 0 - 180°.

[0029] The film edge material cutting device provided by the present invention can, when the film is being wound at high speed or when the machine is stopped, cooperate with the moving knife and the fixed knife to automatically and quickly cut off the edge material 92, eliminate the safety hazards brought by manual edge cutting, improve the automation level of the film 93 winding, and facilitate the improvement of work efficiency.

[0030] Preferably, please refer to Figure 5 . A stepped hole 21 is provided at the connecting end of the swing arm 2. The main shaft 61 of the swing cylinder 6 extends into the stepped hole 21. The one-way bearing 7 is installed in the stepped hole 21. A spacer sleeve 22 is also sleeved on the main shaft 61 of the swing cylinder 6. An end cover 23 is fixedly provided on the swing arm 2. The end cover 23 presses the spacer sleeve 22 onto the one-way bearing 7, and one side of the one-way bearing 7 is pressed against the circular ring connecting part of the swing arm 2, thereby realizing the axial positioning of the one-way bearing 7. The end cover 23 and the swing arm 2 are connected by screws, which is convenient for disassembly and assembly.

[0031] In order to better support the swing arm and improve the stability of the swing arm 2 rotating around the main shaft 61 of the swing cylinder 6, a rolling bearing 24 is provided between the end cover 23 and the main shaft of the swing cylinder 6. A gland 25 is provided at the end of the main shaft of the swing cylinder 6. The gland 25 is used to press the rolling bearing 24 onto the spacer sleeve 22 to realize the axial positioning of the rolling bearing 24. An axial screw hole is provided in the main shaft 61 of the swing cylinder 6. A through hole corresponding to the axial screw hole is provided in the gland 25, and a locking screw passes through the through hole of the gland 25 and is screwed into the axial screw hole.

[0032] Specifically, please refer to Figures 1-3 On the frame 1, there is a support 8. A first mounting piece 81 is pivotally connected to the support 8, and a second mounting piece 82 is pivotally connected to the end cover 23. The first mounting piece 81 and the second mounting piece 82 are connected by the spring 4.

[0033] In order to provide greater rotational kinetic energy (which can also be understood as cutting force) to the swing arm 2 and ensure the reliability of the cutting of the thin film 93, two springs 4 are provided. A first connection hole 83 is respectively opened at two adjacent corners of the first mounting piece 81, and a second connection hole 84 is respectively opened at two adjacent corners of the second mounting piece 82. The two springs 4 are parallel to each other. One end of each spring 4 is fixed in the first connection hole 83, and the other end is fixed in the second connection hole 84. When the central axes of the first mounting piece 81, the second mounting piece 82, and the axis of the swing cylinder 6 are collinear, and the second mounting block 82 is located between the main shaft of the swing cylinder 6 and the first mounting piece 81, the spring obtains the minimum stretching amount, as Figure 1 shown. When the central axes of the first mounting piece 81, the second mounting piece 82, and the axis of the swing cylinder 6 are collinear, and the main shaft of the swing cylinder 6 is located between the second mounting block 82 and the first mounting piece 81, the spring obtains the maximum stretching amount, as Figure 2 shown.

[0034] Preferably, please refer to Figures 1-3 On the support 8, there are at least two first waist-shaped holes 85 extending transversely. On the frame 1, there are first threaded holes 11 corresponding to the first waist-shaped holes 85. A screw passes through each first waist-shaped hole 85 of each support 8, and each screw is screwed into the corresponding first threaded hole 11. By adjusting the transverse position of the support 8, the purpose of adjusting the maximum stretching amount of the spring 4 is achieved.

[0035] Preferably, the fixed knife 5 is arranged on the frame 1 through a knife seat 51. The fixed knife 5 is horizontally arranged on the knife seat 51. The knife seat 51 has at least two second waist-shaped holes 52 extending vertically. On the frame 1, there are second threaded holes 12 corresponding to the second waist-shaped holes 52. A screw passes through each second waist-shaped hole 52 of each knife seat 51, and each screw is screwed into the corresponding second threaded hole 12. By adjusting the position of the knife seat 51, the distance between the fixed knife 5 and the side material 92 can be adjusted, better ensuring the cutting effect.

[0036] Preferably, as shown in Figure 7 On the frame 1, there is a protective cover 9. By providing the protective cover 9, the moving knife 3 can be prevented from being accidentally touched in the non-working state, improving the use safety.

[0037] It will be understood that those of ordinary skill in the art can make equivalent substitutions or changes according to the technical solutions of the present invention and its inventive concept, and all such changes or substitutions shall fall within the protection scope of the present invention.

Claims

1. A film edge material cutting device, characterized in that, It includes a frame, a swing arm, a moving knife arranged on the swing arm, a spring, a fixed knife arranged on the frame, and a swing cylinder; one end of the swing arm is sleeved on the main shaft of the swing cylinder through a one-way bearing, one end of the spring is fixed on the frame, and the other end is fixed on the swing arm. The swing cylinder is used to drive the swing arm to swing so that the spring obtains the maximum tensile amount. After the spring obtains the maximum tensile amount, it drives the swing arm to swing through the contraction force, so that the moving knife cooperates with the fixed knife to cut the edge material; a stepped hole is provided at the connecting end of the swing arm, the main shaft of the swing cylinder extends into the stepped hole, the one-way bearing is installed in the stepped hole, a spacer sleeve is also sleeved on the main shaft of the swing cylinder, and an end cover is fixed on the swing arm. The end cover presses the spacer sleeve on the one-way bearing; a rolling bearing is provided between the end cover and the main shaft of the swing cylinder, and a gland is provided at the end of the main shaft of the swing cylinder. The gland is used to press the rolling bearing on the spacer sleeve; a support is provided on the frame, a first mounting piece is pivotally connected to the support, a second mounting piece is pivotally connected to the end cover, and the first mounting piece and the second mounting piece are connected by the spring; there are two springs. A first connection hole is respectively opened at two adjacent corners of the first mounting piece, and a second connection hole is respectively opened at two adjacent corners of the second mounting piece. The two springs are parallel to each other. One end of each spring is fixed in the first connection hole, and the other end is fixed in the second connection hole; the swing arm is L-shaped and includes a circular ring connection part, a corner part, and a tool mounting part connected in sequence. The moving knife is arranged in the tool mounting part, and the circular ring connection part is sleeved on the main shaft of the swing cylinder.

2. The film edge trimming device according to claim 1, wherein At least two first waist-shaped holes extending horizontally are provided on the support, and first threaded holes corresponding to the first waist-shaped holes are provided on the frame. A screw passes through each first waist-shaped hole of each support, and each screw is respectively screwed into the corresponding first threaded hole.

3. The film edge material cutting device according to claim 1, wherein, The fixed knife is arranged on the frame through a knife holder. The fixed knife is horizontally arranged on the knife holder. At least two second waist-shaped holes extending vertically are provided on the knife holder, and second threaded holes corresponding to the second waist-shaped holes are provided on the frame. A screw passes through each second waist-shaped hole of each knife holder, and each screw is respectively screwed into the corresponding second threaded hole.

4. The film edge material cutting device according to claim 1, characterized in that, A protective cover is provided on the frame.

Images