Fly cutter film cutting device for winding machine

Abstract

The utility model relates to the technical field of film production, in particular to a fly-cutter film cutting device for a winding machine, which comprises a moving table carrying a fly cutter, the moving table translates based on a linear guide rail, and a clamp component is arranged on the moving table to fix the fly cutter; the clamp assembly comprises a butt clamping block and a butt clamping rod, the butt clamping block comprises two separated half blocks, one half block is fixed to the movable table, the butt clamping rod is inserted into a cavity between cracks of the two half blocks, the butt clamping rod comprises two separated half rods, and the fly cutter is arranged between the cracks of the two half rods. The two half blocks are connected and locked through a screw set, and one or two cutting edges are formed in the fly cutter. The fly cutter adjusting device is high in fly cutter adjusting flexibility, the optimal fly cutter moving and film cutting posture can be obtained through debugging, the fly cutter is directly loaded according to the previously recorded numerical value when the fly cutter needs to be fixed at the same position angle next time, the cutter installing and replacing efficiency is high, and time and labor are saved during installation; and the fly cutter can cut in both forward and backward movement, so that the film cutting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of film production, especially a flying knife film cutting device for a winding machine. BACKGROUND

[0002] In the film production and processing process, the winding machine is a commonly used equipment, and cutting the film is a key link to facilitate subsequent processing or replacement of the winding roller. The angle and extension length of the flying knife and other parameter adjustments have important influences on improving the precision and efficiency of film cutting and reducing film wrinkles and damage in the cutting process.

[0003] If the moving posture of the flying knife is poorly adjustable, the adjustment is not in place, and the flying knife often cuts the paper core, the flying knife does not cut the film, and the flying knife cutting position is not accurate, which leads to winding and wrinkling, affecting product quality and production efficiency. Therefore, a device capable of accurately, stably and efficiently cutting the film can better meet the film production line production requirements. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the deficiencies in the prior art, providing a flying knife film cutting device for a winding machine, which optimizes the flying knife structure and cutting mechanism, and significantly improves the adjustability of the flying knife angle and position.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A flying knife film cutting device for a winding machine, comprising a moving table carrying a flying knife, the moving table is based on linear guide rail translation, the moving table is provided with a clamp assembly to fix the flying knife;

[0007] The clamp assembly comprises a pair of clamping blocks and a pair of clamping rods, the pair of clamping blocks comprises two separated half blocks, one of which is fixed with the moving table, the pair of clamping rods is inserted into the cavity between the clamping gap of the two half blocks, the pair of clamping rods comprises two separated half rods, the flying knife is arranged between the clamping gap of the two half rods, and the two half blocks are connected and locked by a screw group.

[0008] When the screw group is in the unscrewed state, the pair of clamping rods can rotate in the cavity, the flying knife can move in the pair of clamping rods, and the included angle alpha of the two can be changed, and one or two blade edges are opened on the flying knife.

[0009] Further, a length scale is arranged on the pair of clamping rods, and an angle scale is arranged on the pair of clamping blocks.

[0010] Further, the linear guide rail comprises two end fixed blocks, parallel solid guide rods and hollow guide rods are arranged between the two fixed blocks, the moving table is movably sleeved on the solid guide rods and the hollow guide rods, and a piston is arranged in the hollow guide rod and magnetically attracted to the moving table.

[0011] Further, air holes are arranged on the two fixed blocks and respectively communicated with two ends of the piston through the central cavities of the hollow guide rods.

[0012] Further, the flying knife is a parallelogram, and when the number of blade edges is two, the two blade edges are located at opposite sides.

[0013] Further, the linear guide rail is provided with a buffer at each end.

[0014] Further, the number of the hollow guide rods is one, and the number of the solid guide rods is greater than or equal to two, and the hollow guide rod is located between the two solid guide rods.

[0015] Further, the length scale bar is a concave line.

[0016] Further, a disc-shaped or ring-shaped magnet one is arranged in the piston, a ring-shaped magnet two is arranged in the moving table, and the magnet one is located in the ring-shaped inner periphery of the magnet two.

[0017] The beneficial effects of the technical scheme of the utility model are as follows:

[0018] 1. The flying knife film cutting device for the winding machine realizes the "rotation-elongation-inclination" three-orientation combined adjustment of the flying knife, the adjustment flexibility is significantly improved, the optimal flying knife moving film cutting posture can be obtained through debugging in application, and the thin film can be accurately, stably and efficiently cut.

[0019] 2. The flying knife film cutting device for the winding machine can record the adjustment values, directly loads the previously recorded values when the flying knife needs to be fixed at the same position angle next time, improves the knife loading and replacing efficiency, simultaneously fixes the clamping blocks and clamping rods through the same screw group, and saves time and labor in installation.

[0020] 3. The flying knife film cutting device for the winding machine adopts the double-blade edge design to realize that the cutting moving direction of the flying knife can be directly reversed, the moving of the flying knife in the forward stroke and the return stroke can all cut, no idle stroke is consumed, energy and time are saved, and the film cutting efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some of the embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a perspective structural schematic diagram of the present application.

[0023] Figure 2 It is Figure 1 It is an enlarged schematic diagram of A in

[0024] Figure 3 It is a front view structural schematic diagram of the present application.

[0025] Figure 4 It is a top view structural schematic diagram of the present application.

[0026] Figure 5 It is Figure 4 It is an enlarged schematic diagram of B in

[0027] Figure 6 It is a schematic diagram of the positional relationship between the magnet one and the magnet two in the present application.

[0028] In the figure: 1: flying knife; 2: moving table; 3: linear guide rail; 3a: fixed block; 3a-1: air hole; 3b: solid guide rod; 3c: hollow guide rod; 3c-1: magnet one; 3d: buffer; 4: clamp assembly; 4a: counter clamping block; 4a-1: angle scale dial; 4b: counter clamping rod; 4b-1: length scale bar; 4c: screw group. DETAILED DESCRIPTION

[0029] The present application will now be further described in detail with reference to the drawings. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the present application, so they only show the structures related to the present application. The present application is described in detail by using structural schematic diagrams, and the schematic diagrams are only examples, which should not limit the scope of protection of the present application.

[0030] Please refer to Figures 1 to 5 Embodiment one: a flying knife film cutting device for a winding machine, comprising a moving table 2 carrying a flying knife 1, the moving table 2 is translated based on a linear guide rail 3, and the moving table 2 is provided with a clamp assembly 4 to fix the flying knife 1;

[0031] Specifically, the clamp assembly 4 includes a pair of clamping blocks 4a and a pair of clamping rods 4b combined together, the clamping blocks 4a include two separate halves, one of which is fixed to the moving table 2, the clamping rods 4b are inserted into the cavities between the two halves, the clamping rods 4b include two separate halves, the flying knife 1 is arranged between the two halves, and the two halves are connected and locked by the screw set 4c; the narrow and long clamping rods 4b have a small area of the blade edge of the flying knife 1, the blade edge can be used for cutting a wide range, and the cutting of a thicker film material is realized.

[0032] The screw set 4c includes at least four screws, and each side of the clamping rod 4b is provided with ≥2 screws, when the screw set 4c is in a loosened state, the clamping rod 4b can rotate in the cavity, the flying knife 1 can move in the clamping rod 4b, and the included angle α between the two can be changed, the range of α is 110°-160°, and the comprehensive adjustment of the rotation angle, the inclination angle and the extension length is carried out.

[0033] The flying knife 1 is a parallelogram, and a blade edge is formed on the long side, and the blade edge faces the film to be cut.

[0034] The clamping rod 4b is provided with a length scale bar 4b-1, and the clamping block 4a is provided with an angle scale disc 4a-1. The length scale bar 4b-1 is concave, which does not interfere with the adjustment of the clamping rod 4b in the clamping block 4a, and the length scale bar 4b-1 can not only mark the placement position of the flying knife 1 in the clamping rod 4b, but also mark the extension position of the clamping rod 4b in the clamping block 4a. The angle scale disc 4a-1 can be convex or concave, and the flying knife 1 can be set at an angle based on the rotation angle of the clamping block 4a from the top view, the rotation angle, the inclination angle and the extension length of the flying knife 1 are three degrees of freedom, and after numerical recording, the flying knife 1 can be directly loaded according to the previously recorded values when it needs to be loaded at the same position angle next time, and the efficiency of knife loading and replacement is improved. Figure 4 、 Figure 5 The flying knife 1 can be set at an angle based on the rotation angle of the clamping block 4a from the top view, the rotation angle, the inclination angle and the extension length of the flying knife 1 are three degrees of freedom, and after numerical recording, the flying knife 1 can be directly loaded according to the previously recorded values when it needs to be loaded at the same position angle next time, and the efficiency of knife loading and replacement is improved.

[0035] The linear guide rail 3 includes two fixed blocks 3a at both ends, a solid guide rod 3b and a hollow guide rod 3c are arranged in parallel between the two fixed blocks 3a, the number of the hollow guide rod 3c is 1, the number of the solid guide rod 3b is ≥2, the hollow guide rod 3c is located between the two solid guide rods 3b, the moving table 2 is movably sleeved on the solid guide rod 3b and the hollow guide rod 3c, and a piston magnetically attracted to the moving table 2 is arranged in the hollow guide rod 3c. The two fixed blocks 3a are both provided with air holes 3a-1 and are respectively connected to both ends of the piston through the central cavities of the hollow guide rod 3c, a disc-shaped or ring-shaped magnet 3c-1 is arranged in the piston, and a ring-shaped magnet two is arranged in the moving table 2. The specific combination of the two magnets is shown in the following figure. Figure 6As shown, the magnet 3c-1 is located in the annular inner of the magnet two, the magnetism of the inner and outer magnet is opposite, and is linked by magnetic force; when the compressed air enters the hollow guide rod 3c side from the air hole 3a-1, the piston is pushed to move to the other side, and due to the magnetic attraction, the outer moving table 2 also moves synchronously with the piston, and the on-off of the airflow on both sides is controlled by the electromagnetic valve.

[0036] The scheme of driving the flying knife 1 to move has high safety, when the blocking force exceeds the magnetic attraction linkage force between the magnet 1 and the magnet 2, the two can be disconnected, the overall safety of the protection device is protected, and due to the gear meshing transmission mechanism, the working noise is small, and the installation space is saved.

[0037] The buffer 3d is arranged at both ends of the linear guide rail 3, when the moving table 2 moves quickly on the linear guide rail 3 and reaches the end of stroke, a large impact force is generated, the buffer 3d can effectively absorb and slow down the impact force, avoid the violent collision between the moving table 2 and the guide rail end, protect the moving table 2, the guide rail and the equipment connected therewith from being damaged, reduce the noise and vibration generated by the impact, and keep the flying knife 1 firmly loaded on the moving table 2.

[0038] When the flying knife film cutting device for the winding machine is used, according to the actual situation on site, the screws of the screw set 4c on the clamping block 4a are loosened, the posture of the flying knife 1 is adjusted, the operations that can be taken include but are not limited to: rotating the clamping rod 4b, adjusting the length of the clamping rod 4b extending out of the clamping block 4a, adjusting the included angle a of the flying knife 1 and the clamping rod 4b, tightening the screw set 4c to fix the clamping block 4a and the clamping rod 4b, after the flying knife 1 is fixed, the film cutting test is carried out, the best flying knife setting posture is obtained through multiple debugging, the length scale bar 4b-1 and the angle scale disc 4a-1 are arranged to make the installation position value visualized and recorded, and the next time the flying knife 1 needs to be installed at the same position angle, the previously recorded value can be directly used for loading, so that the time for changing and installing the knife is saved.

[0039] In addition, the pressing mechanism is arranged beside the linear guide rail 3 to press the film before cutting, the pressing rod presses the upper and lower surfaces of the film, prevents the film from wrinkling or deviating in the cutting process, improves the cutting quality, and drives the moving table 2 to move with the flying knife 1 by controlling the on-off of the compressed air source. After cutting is completed, the moving table 2 drives the flying knife 1 to return to the initial position, and waits for the next cutting.

[0040] Embodiment two, the difference with embodiment one is that: flying knife 1 is parallelogram, long side open has two blade edges, two blade edges are at opposite sides. Because the single-sided blade one-way cutting process adopted in embodiment one, flying knife 1 completes once cutting and still needs to return to initial position to carry out next cutting, return stroke is empty stroke, waste energy and time. The design of two blade edges realizes that the cutting moving direction of flying knife 1 can be directly reversed, and the moving of flying knife 1 during forward stroke and return stroke can cut, no empty stroke consumption, save energy and time, improve film cutting efficiency.

[0041] The flying knife film cutting device for the winding machine can be adjusted and optimized according to actual needs to adapt to films with different thicknesses and materials, realize stable and accurate cutting of the films, and be conveniently installed with accurate and controllable position parameters.

[0042] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, it should be pointed out that, for ordinary skilled personnel in the art, under the premise of not departing from the utility model concept, implementation changes, modification or addition, all should belong to the protection scope of the utility model.

Claims

1. A flying knife film cutting device for a winding machine, characterized by: Including the moving platform (2) carrying the flying knife (1), the moving platform (2) is translated based on the linear guide rail (3), the moving platform (2) is provided with the clamp assembly (4) to fix the flying knife (1); The clamp assembly (4) includes a pair of clamping blocks (4a) and a pair of clamping rods (4b), the pair of clamping blocks (4a) includes two separated half blocks, one of which is fixed with the moving platform (2), the pair of clamping rods (4b) is inserted into the cavity between the clamping gap of the two half blocks, the pair of clamping rods (4b) includes two separated half rods, the flying knife (1) is arranged between the clamping gap of the two half rods, and the two half blocks are connected and locked by the screw set (4c). When the screw set (4c) is in the loosened state, the pair of clamping rods (4b) can rotate in the cavity, the flying knife (1) can move in the pair of clamping rods (4b), and the included angle α of the two can be changed, and one or two cutting edges are formed on the flying knife (1).

2. A flying knife film cutting device for a winding machine according to claim 1, characterized in that: The pair of clamping rods (4b) is provided with a length scale bar (4b-1), and the pair of clamping blocks (4a) is provided with an angle scale disc (4a-1).

3. The flying knife film cutting device for a winding machine according to claim 1, characterized in that: The linear guide rail (3) includes two end fixed blocks (3a), parallel solid guide rods (3b) and hollow guide rods (3c) are arranged between the two fixed blocks (3a), the moving platform (2) is movably sleeved on the solid guide rod (3b) and the hollow guide rod (3c), and a piston is arranged in the hollow guide rod (3c) and is magnetically attracted to the moving platform (2).

4. A flying knife film cutting device for a winding machine according to claim 3, characterized in that: The two fixed blocks (3a) are provided with air holes (3a-1) and are respectively communicated with the two ends of the piston through the central cavities of the hollow guide rods (3c).

5. The flying knife film cutting device for a winding machine according to claim 1, characterized in that: The flying knife (1) is a parallelogram, and when the number of cutting edges is two, the two cutting edges are on opposite sides.

6. A flying knife film cutting device for a winding machine according to claim 3, characterized in that: The linear guide rail (3) is provided with a buffer (3d) at both ends.

7. A flying knife film cutting device for a winding machine according to claim 4, characterized in that: The number of the hollow guide rods (3c) is one, and the number of the solid guide rods (3b) is greater than or equal to two, and the hollow guide rod (3c) is located between the two solid guide rods (3b).

8. The flying knife film cutting device for a winding machine according to claim 2, characterized in that: The length scale bar (4b-1) is concave.

9. The flying knife film cutting device for a winding machine according to claim 3, characterized in that: A circular sheet-shaped or circular ring-shaped magnet one (3c-1) is arranged in the piston, a circular ring-shaped magnet two is arranged in the moving platform (2), and the magnet one (3c-1) is located in the inner periphery of the magnet two.

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