Cutting device for decorative film production

Abstract

The utility model relates to the field of decorative film production, in particular to a cutting device for decorative film production, which comprises a cutting machine body, a hydraulic cylinder is fixed at the top of the cutting machine body, a piston rod of the hydraulic cylinder extends downwards, and a cutting knife is fixed at the end of the piston rod; the front side and the rear side of the cutting knife are each provided with a set of first smoothing rollers, the two sets of first smoothing rollers are symmetrically distributed relative to the center line of the cutting knife in the length direction, each set of first smoothing rollers comprises two first smoothing rollers arranged in a mirror image mode, and the two first smoothing rollers arranged in the mirror image mode are arranged relative to a blade part of the cutting knife in a mirror image mode. By adopting the structures such as the first smoothing roller and the second smoothing rollers, the first smoothing roller can flatten the decorative film in the width direction and eliminate wrinkles of the decorative film in the length direction, and the second smoothing rollers can flatten the decorative film in the length direction and eliminate wrinkles of the decorative film in the width direction. And wrinkles at the to-be-cut part of the decorative film are completely smoothed, so that the decorative film can be conveniently cut by a cutting knife, and the quality of a cut product is improved.

Description

Technical Field

[0001] This utility model relates to a cutting device for decorative film production, and more particularly to a cutting device for decorative film production applied in the field of decorative film production. Background Technology

[0002] Decorative film is widely used in daily life and has a wide range of functions. To meet the different needs of different buyers for the decorative film they purchase, the rolls of decorative film need to be cut.

[0003] To address the issue of inaccurate cutting and compromised quality when simply fixing decorative film, a certain cutting device for decorative film production employs a plate-type flattening structure design, which has a significant market share.

[0004] Chinese utility model patent CN220945606U discloses a cutting device for decorative film production, including a base, a set of guide rollers at one end of the base, a cleaning component on one side of the guide rollers, a tensioning component on one side of the cleaning component, and a cutting component between the tensioning components. The cutting component includes a fixed frame, a cylinder on the fixed frame, a cutting table and a holding seat inside the fixed frame, and the holding seat is located on the upper part of the cutting table. This cutting device for decorative film production can clamp and fix the cutting part of the decorative film through the cutting component, with good fixing effect and no slippage. At the same time, it can flatten the warping and wrinkles on the surface of the decorative film at the cutting point, so that the decorative film at the cutting table position will not produce wrinkles, thereby facilitating cutting and improving reliability.

[0005] The existing cutting device only achieves the effect of vertical flattening. However, if the decorative film to be cut has uneven parts such as wrinkles or curling, the wrinkles will still remain even after flattening. The effect of eliminating wrinkles is poor, which will still result in poor product quality after cutting. Utility Model Content

[0006] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to design a cutting device for the production of decorative film that can play a good smoothing role.

[0007] To solve the above problems, this utility model provides a cutting device for decorative film production, including a cutting machine body, a hydraulic cylinder fixed on the top of the cutting machine body, and a piston rod of the hydraulic cylinder extending downward and a cutting blade fixed at its end.

[0008] A set of first rollers is provided on the front and rear sides of the cutting blade. The two sets of first rollers are symmetrically distributed about the center line of the cutting blade in the length direction. Each set of first rollers includes two mirror-image first rollers. The two mirror-image first rollers are mirror-image about the blade of the cutting blade.

[0009] A second smoothing roller is provided on each of the left and right sides of the cutting blade. The two second smoothing rollers are symmetrically arranged about the cutting edge of the cutting blade, and the two second smoothing rollers are located on the outer side of the first smoothing roller away from the cutting blade.

[0010] The upper end of the cutting blade is also fixed with a bracket;

[0011] The left and right sides of the cutting blade and the side of the fixed frame away from the middle of the cutting blade are all equipped with a torsion swing connection structure; the four first rollers are rotatably connected to the cutting blade through the torsion swing connection structure, and the two second rollers are rotatably connected to the fixed frame through the torsion swing connection structure. The torsion swing connection structure is also used to use elastic force to reset the first rollers and the second rollers.

[0012] When the first roller and the second roller are in their initial positions, the lower end of the first roller is lower than the lower end of the second roller, and the lower end of the second roller is lower than the lower end of the cutting blade.

[0013] In the above-mentioned cutting device for decorative film production, by setting a first smoothing roller and a second smoothing roller, the first smoothing roller flattens the decorative film from the width direction and eliminates the wrinkles in the length direction of the decorative film, and the second smoothing roller flattens the decorative film from the length direction and eliminates the wrinkles in the width direction of the decorative film, so that the wrinkles in the part of the decorative film to be cut are completely smoothed, which facilitates the cutting of the cutting blade and improves the quality of the cut product.

[0014] As a further improvement to this application, the torsion connection structure includes:

[0015] Fixed rod;

[0016] A rotating disk is rotatably connected to the end of a fixed rod away from the cutting blade.

[0017] The swing arm is fixed to the side of the rotating disk away from the fixed rod.

[0018] The first torsion spring, one end of which is fixed to the side of the rotating disk away from the swing arm;

[0019] Among them, one end of the fixed rod corresponding to the first roller is fixed to one side of the cutting knife, the lower end of the swing arm is rotatably sleeved on the rotating shaft of the first roller, and the other end of the first torsion spring is fixed to one side of the cutting knife;

[0020] One end of the fixed rod corresponding to the second roller is fixed to one side of the fixed frame, the lower end of the swing arm is rotatably sleeved on the rotating shaft of the second roller, and the other end of the first torsion spring is fixed to one side of the fixed frame.

[0021] As a further improvement of this application, a plurality of balls are rolled and embedded on the peripheral wall of the first roller, and the plurality of balls are evenly distributed along the peripheral wall of the first roller.

[0022] As a further improvement to this application, both the cutting blade and the fixing bracket are equipped with anti-reverse structures;

[0023] The anti-reverse structure includes a pawl, a connecting shaft, a connecting part, and a second torsion spring. The pawl is fixedly sleeved on the end of the connecting shaft, and the end of the connecting shaft away from the pawl is fixed to the connecting part.

[0024] The second torsion spring is movably sleeved on the connecting shaft, and both ends of the second torsion spring are fixed to one side of the pawl and one side of the connecting part, respectively.

[0025] The rotating disk has an integrally formed ratchet tooth section that matches the pawl.

[0026] As another improvement of this application, a fixed rail is also fixed to the top of the cutting blade, and grooves are provided on both the fixing frame and the fixed rail;

[0027] The connecting part includes a slide rod and a spring. One end of the slide rod is fixed to one end of the connecting shaft and one end of the second torsion spring. The other end of the slide rod is slidably embedded in the slide groove. One end of the spring is fixed to the inner side wall of the slide groove, and the other end of the spring is fixed to one side of the slide rod.

[0028] As another improvement of this application, a guide wedge is fixed to the inner top of the cutting machine body. The lower end of the guide wedge is an inclined wall. When the lower end of the guide wedge coincides with the position of the slide rod, it drives the slide rod to overcome the elastic force of the spring and slide along the slide groove to the side away from the ratchet teeth.

[0029] In summary, by setting up a first and a second smoothing roller, when the cutting blade descends under the push of the hydraulic cylinder, the cutting blade drives the first and second smoothing rollers to descend synchronously through the torsion connection structure. The first smoothing roller first contacts the decorative film and rolls outward as the cutting blade presses down, thereby flattening the decorative film in the width direction and eliminating wrinkles in the length direction. Then, the second smoothing roller contacts the decorative film and flattens it in the length direction during continuous pressing, eliminating wrinkles in the width direction. This ensures that the wrinkles on the part of the decorative film to be cut are completely smoothed, facilitating the cutting by the cutting blade and improving the quality of the cut product. After cutting, the torsion connection structure also uses elasticity to reset the first and second smoothing rollers, thus enabling the next cutting operation. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0031] Figure 2 This is a side view of the first embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the cutting blade, the first roller, the second roller, and the torsion connection structure according to the first embodiment of this application.

[0033] Figure 4 This is a schematic diagram of the first roller, the torsion connection structure, and the anti-reverse rotation structure according to the first embodiment of this application;

[0034] Figure 5 for Figure 2 Enlarged view of the structure at point A in the image.

[0035] Explanation of the labels in the diagram:

[0036] 1. Cutting machine body, 2. Hydraulic cylinder, 3. Cutting blade, 31. Fixed frame, 32. Fixed rail, 33. Slide groove, 4. First roller, 5. Second roller, 6. Torsional connection structure, 61. Fixed rod, 62. Rotating disk, 621. Ratchet teeth, 63. Swing arm, 64. First torsion spring, 7. Anti-reverse structure, 71. Pad, 72. Connecting shaft, 73. Slide rod, 74. Second torsion spring, 75. Spring, 8. Guide wedge, 9. Ball bearing. Detailed Implementation

[0037] The following describes one embodiment of this application in detail with reference to the accompanying drawings.

[0038] Implementation method 1:

[0039] Figure 1-5 A cutting device for producing decorative film is shown, including a cutting machine body 1, a hydraulic cylinder 2 fixed to the top of the cutting machine body 1, and a piston rod of the hydraulic cylinder 2 extending downward and a cutting blade 3 fixed to its end.

[0040] A set of first rollers 4 is provided on the front and rear sides of the cutting blade 3. The two sets of first rollers 4 are symmetrically distributed about the center line of the length direction of the cutting blade 3. Each set of first rollers 4 includes two mirror-arranged first rollers 4. The two mirror-arranged first rollers 4 are mirror-arranged about the blade of the cutting blade 3.

[0041] A second roller 5 is provided on each of the left and right sides of the cutting blade 3. The two second rollers 5 are symmetrically arranged about the blade of the cutting blade 3, and the two second rollers 5 are located on the outside of the first roller 4 away from the cutting blade 3.

[0042] The upper end of the cutting blade 3 is also fixed with a fixing bracket 31;

[0043] The left and right sides of the cutting blade 3 and the side of the fixed frame 31 away from the middle of the cutting blade 3 are all equipped with a torsion swing connection structure 6; the four first rollers 4 are rotatably connected to the cutting blade 3 through the torsion swing connection structure 6, and the two second rollers 5 are rotatably connected to the fixed frame 31 through the torsion swing connection structure 6. The torsion swing connection structure 6 is also used to use elasticity to reset the first rollers 4 and the second rollers 5.

[0044] When the first roller 4 and the second roller 5 are in the initial position, the lower end of the first roller 4 is lower than the lower end of the second roller 5, and the lower end of the second roller 5 is lower than the lower end of the cutting blade 3.

[0045] Based on the above structure, by setting the first smoothing roller 4 and the second smoothing roller 5, when the cutting blade 3 is pushed down by the hydraulic cylinder 2, the cutting blade 3 drives the first smoothing roller 4 and the second smoothing roller 5 to descend synchronously through the torsion connection structure 6. The first smoothing roller 4 first contacts the decorative film and rolls outward as the cutting blade 3 is pressed down, thereby flattening the decorative film in the width direction and eliminating wrinkles in the length direction of the decorative film. Then the second smoothing roller 5 contacts the decorative film and flattens the decorative film in the length direction during the continuous pressing process, eliminating wrinkles in the width direction of the decorative film. This makes the wrinkles in the part of the decorative film to be cut completely smoothed, which is convenient for the cutting blade 3 to cut and improves the quality of the cut product. After the cutting is completed, the torsion connection structure 6 also uses the elasticity to reset the first smoothing roller 4 and the second smoothing roller 5, so as to carry out the next cutting operation.

[0046] Furthermore, the torsion connection structure 6 includes:

[0047] Fixed rod 61;

[0048] Rotating disk 62 is rotatably connected to the end of fixed rod 61 away from cutting blade 3;

[0049] The swing arm 63 is fixed to the side of the rotating disk 62 away from the fixed rod 61;

[0050] The first torsion spring 64, one end of which is fixed to the side of the rotating disk 62 away from the swing arm 63;

[0051] Among them, one end of the fixed rod 61 corresponding to the first roller 4 is fixed to one side of the cutting knife 3, the lower end of the swing arm 63 is rotatably sleeved on the rotating shaft of the first roller 4, and the other end of the first torsion spring 64 is fixed to one side of the cutting knife 3.

[0052] One end of the fixed rod 61 corresponding to the second roller 5 is fixed to one side of the fixed frame 31, the lower end of the swing arm 63 is rotatably sleeved on the rotating shaft of the second roller 5, and the other end of the first torsion spring 64 is fixed to one side of the fixed frame 31.

[0053] After the first roller 4 or the second roller 5 adheres to the decorative film, the continued descent of the cutting blade 3 forces the first roller 4 or the second roller 5 to roll outward away from the cutting blade 3. The swing arm 63 generates an outward tilting motion, thereby causing the rotating disk 62 to overcome the torque of the first torsion spring 64. At the same time, the torque of the first torsion spring 64 is applied to the first roller 4 or the second roller 5 through the swing arm 63, thereby giving the first roller 4 or the second roller 5 the force to press against the decorative film, achieving the effect of flattening the decorative film and eliminating wrinkles in the decorative film.

[0054] After the cutting is completed, either the first roller 4 or the second roller 5 will be reset under the elastic force of the first torsion spring 64, ready for the next cutting operation.

[0055] Furthermore, a plurality of balls 9 are rolled and embedded on the peripheral wall of the first roller 4, and the plurality of balls 9 are evenly distributed along the peripheral wall of the first roller 4.

[0056] With the arrangement of multiple balls 9, the decorative film pressed by the first roller 4 actually contacts the surface of the balls 9, so that when the second roller 5 flattens the decorative film, the decorative film pressed by the first roller 4 can move smoothly along the length of the decorative film, avoiding the first roller 4 from obstructing the opening of the decorative film when the second roller 5 flattens it, thus improving the smoothness of the movement of the decorative film and the effect of flattening it.

[0057] Furthermore, both the cutting blade 3 and the fixing bracket 31 are equipped with an anti-reverse structure 7;

[0058] The anti-reverse structure 7 includes a pawl 71, a connecting shaft 72, a connecting part, and a second torsion spring 74. The pawl 71 is fixedly sleeved on the end of the connecting shaft 72, and the end of the connecting shaft 72 away from the pawl 71 is fixed to the connecting part.

[0059] The second torsion spring 74 is movably sleeved on the connecting shaft 72, and both ends of the second torsion spring 74 are fixed to one side of the pawl 71 and the other side of the connecting part, respectively.

[0060] The rotating disk 62 has an integrally formed ratchet tooth 621 on its periphery that is adapted to the pawl 71.

[0061] Through the engagement of the ratchet teeth 621 and the pawl 71, the pawl 71 can fit against the ratchet teeth 621 under the action of the second torsion spring 74, so that the ratchet teeth 621 can only rotate in one direction. That is, when the ratchet teeth 621 and the pawl 71 are engaged, the rotating disk 62 can only generate rotation that causes the swing arm 63 to open outward. This ensures that after the cutting is completed, when the cutting blade 3 rises, the positions of the first roller 4 and the second roller 5 are fixed, preventing the first roller 4 and the second roller 5 from contracting inward when the cutting blade 3 initially rises, which would cause the cut product to shrink at the cut part, producing larger wrinkles and causing inconvenience for subsequent use.

[0062] Of course, in order to enable the first roller 4 and the second roller 5 to be reset for the next cutting operation, the top of the cutting blade 3 is also fixed with a fixed rail 32, and both the fixed frame 31 and the fixed rail 32 are provided with a sliding groove 33.

[0063] The connecting part includes a slide rod 73 and a spring 75. One end of the slide rod 73 is fixed to one end of the connecting shaft 72 and one end of the second torsion spring 74. The other end of the slide rod 73 is slidably embedded in the slide groove 33. One end of the spring 75 is fixed to the inner side wall of the slide groove 33, and the other end of the spring 75 is fixed to one side of the slide rod 73.

[0064] A guide wedge 8 is fixed to the inner top of the cutting machine body 1, and the lower end of the guide wedge 8 is an inclined wall;

[0065] When the cutting blade 3 moves to the top of the cutting machine body 1, the lower end of the guide wedge block 8 coincides with the position of the slide bar 73. At this time, the slide bar 73 is driven to overcome the elastic force of the spring 75 and slide along the slide groove 33 to the side away from the ratchet tooth 621, thereby causing the pawl 71 to separate from the ratchet tooth 621, so that the rotating disk 62 can rotate in the opposite direction. That is, under the action of the first torsion spring 64, the first roller 4 and the second roller 5 are reset, which is convenient for the next cutting operation.

[0066] When the cutting operation is performed again, after the lower end of the guide wedge 8 separates from the slide bar 73, the slide bar 73 approaches the ratchet tooth 621 under the elastic force of the spring 75, so that the pawl 71 abuts against the ratchet tooth 621 again. That is, the pawl 71 can once again play a limiting role on the ratchet tooth 621, that is, the rotating disk 62 can only produce a rotation that causes the swing arm 63 to open outward, thus achieving the expected limiting effect.

[0067] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A cutting device for producing decorative film, comprising a cutting machine body (1), wherein a hydraulic cylinder (2) is fixed to the top of the cutting machine body (1), and the piston rod of the hydraulic cylinder (2) extends downward and a cutting blade (3) is fixed to its end, characterized in that: The cutting blade (3) is provided with a set of first rollers (4) on the front and rear sides respectively. The two sets of first rollers (4) are symmetrically distributed about the center line of the length direction of the cutting blade (3). Each set of first rollers (4) includes two mirror-set first rollers (4). The two mirror-set first rollers (4) are mirror-set about the blade of the cutting blade (3). The cutting blade (3) has a second roller (5) on each of its left and right sides. The two second rollers (5) are symmetrically arranged about the blade of the cutting blade (3), and the two second rollers (5) are located on the outside of the first roller (4) away from the cutting blade (3). The upper end of the cutting blade (3) is also fixed with a fixing frame (31); The cutting blade (3) is equipped with a torsion connection structure (6) on both sides of the left and right sides and on the side of the fixed frame (31) away from the middle of the cutting blade (3); the four first rollers (4) are rotatably connected to the cutting blade (3) through the torsion connection structure (6), and the two second rollers (5) are rotatably connected to the fixed frame (31) through the torsion connection structure (6). The torsion connection structure (6) is also used to reset the first rollers (4) and the second rollers (5) using elastic force. When the first roller (4) and the second roller (5) are in the initial position, the lower end of the first roller (4) is lower than the lower end of the second roller (5), and the lower end of the second roller (5) is lower than the lower end of the cutter (3).

2. The cutting device for decorative film production according to claim 1, characterized in that: The torsion connection structure (6) includes: Fixed rod (61); Rotating disk (62), the rotating disk (62) is rotatably connected to the end of the fixed rod (61) away from the cutting blade (3); The swing arm (63) is fixed to the side of the rotating disk (62) away from the fixed rod (61); A first torsion spring (64), one end of which is fixed to the side of the rotating disk (62) away from the swing arm (63); Among them, one end of the fixed rod (61) corresponding to the first roller (4) is fixed to one side of the cutter (3), the lower end of the swing arm (63) is rotatably sleeved on the rotating shaft of the first roller (4), and the other end of the first torsion spring (64) is fixed to one side of the cutter (3). One end of the fixed rod (61) corresponding to the second roller (5) is fixed to one side of the fixed frame (31), the lower end of the swing arm (63) is rotatably sleeved on the rotating shaft of the second roller (5), and the other end of the first torsion spring (64) is fixed to one side of the fixed frame (31).

3. The cutting device for decorative film production according to claim 1, characterized in that: A plurality of balls (9) are rolled and embedded on the peripheral wall of the first roller (4), and the plurality of balls (9) are evenly distributed along the peripheral wall of the first roller (4).

4. The cutting device for decorative film production according to claim 2, characterized in that: Both the cutting blade (3) and the fixing frame (31) are equipped with anti-reverse structure (7); The anti-reverse structure (7) includes a pawl (71), a connecting shaft (72), a connecting part, and a second torsion spring (74). The pawl (71) is fixedly sleeved on the end of the connecting shaft (72), and the end of the connecting shaft (72) away from the pawl (71) is fixed to the connecting part. The second torsion spring (74) is movably sleeved on the connecting shaft (72), and the two ends of the second torsion spring (74) are fixed to one side of the pawl (71) and the other side of the connecting part, respectively; The rotating disk (62) has an integrally formed ratchet tooth (621) on its periphery that is adapted to the pawl (71).

5. The cutting device for decorative film production according to claim 4, characterized in that: The top of the cutting blade (3) is also fixed with a fixed rail (32), and both the fixed frame (31) and the fixed rail (32) are provided with sliding grooves (33). The connecting part includes a slide rod (73) and a spring (75). One end of the slide rod (73) is fixed to one end of the connecting shaft (72) and one end of the second torsion spring (74). The other end of the slide rod (73) is slidably embedded in the slide groove (33). One end of the spring (75) is fixed to the inner side wall of the slide groove (33), and the other end of the spring (75) is fixed to one side of the slide rod (73).

6. The cutting device for decorative film production according to claim 5, characterized in that: The inner top of the cutting machine body (1) is fixed with a guide wedge (8). The lower end of the guide wedge (8) is a sloping wall. When the lower end of the guide wedge (8) coincides with the position of the slide rod (73), the slide rod (73) is driven to overcome the elastic force of the spring (75) and slide along the slide groove (33) to the side away from the ratchet tooth (621).

Images