Film roll rolling and cutting mechanism

Abstract

The utility model discloses a film roll rolling and cutting mechanism which comprises a U-shaped knife rest, a transmission roller, a bottom roller and a knife roller, the transmission roller, the bottom roller and the knife roller are sequentially arranged in the knife rest from bottom to top, the transmission roller, the bottom roller and the knife roller are sequentially connected in a transmission mode, two ends of the knife roller are respectively and rotatably connected with a sliding block, and the two sliding blocks are respectively and vertically connected with two vertical plates located on two sides of the knife rest in a sliding mode. The top of each sliding block is connected with a pressing block, the top of each vertical plate is provided with a hand wheel used for driving the corresponding pressing block to vertically move, the inner side of one pressing block is sequentially provided with a laser transmitter and a laser receiver in the horizontal direction, and the inner side of the other pressing block is provided with a reflective mirror. And laser emitted by the laser emitter is reflected by the reflector and then is received by the laser receiver. The gap between the laser bottom roller and the knife roller can be easily kept consistent, and the problem that the gap at one end is large and the gap at the other end is small is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile phone protective film production equipment, in particular to a film roll cutting mechanism. Background Art

[0002] A rotary die-cutter is a commonly used piece of equipment for producing mobile phone protective films. During production, a roll of film material is cut by the rotary die-cutter to produce mobile phone protective films of the appropriate size and specifications. The rotary die-cutter is equipped with a drive roller, a bottom roller, and a cutter roller. The cutter roller is equipped with a blade that conforms to the shape of the mobile phone protective film. The drive roller drives the bottom roller, which in turn drives the cutter roller to rotate. The bottom roller and the cutter roller press the protective film together, cutting the mobile phone protective film.

[0003] Because the film being rolled can vary in thickness and consist of more than one layer, the gap between the cutter roller and the bottom roller must be adjusted to meet the required roll-cutting requirements when replacing the film. Furthermore, when the cutter roller wears out after prolonged use, the gap between the two rollers widens, necessitating readjustment. Currently, the gap between the cutter roller and the bottom roller is adjusted using two handwheels on either side of the cutter head of a rotary die-cutting machine. Since the gap between the cutter roller and the bottom roller is adjusted using these two handwheels, ensuring consistency between the two ends of the cutter roller and the bottom roller is difficult. This can easily lead to a larger gap at one end and a smaller gap at the other, preventing the film from being completely separated from the waste material and thus compromising proper roll-cutting. Patent application publication number CN218748139U discloses an adjustable bottom roller for a rotary die-cutting machine. This feature utilizes two rotatable eccentrics at each end of the bottom roller to adjust the height of the roller, thereby adjusting the distance between the roller and the cutter roller. Because two eccentric members are located at each end of the bottom roller and need to be adjusted separately, it is difficult to ensure the consistency of the distance moved by the two ends of the cutter roller during adjustment. As a result, it is impossible to ensure the consistency of the distance between the two ends of the bottom roller and the cutter roller. This can easily lead to the gap between the cutter roller and the bottom roller being larger at one end and smaller at the other end. Patent application with publication number CN212287948U discloses a die-cutting machine adjustment device. The height of the die-cutting roller is adjusted by two adjustment handles. Since the two ends of the die-cutting roller are adjusted separately, the above technical problems also exist. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a film roll cutting mechanism for solving the problem that when a circular die cutting machine adjusts the gap between a knife roller and a bottom roller, the gap at one end is large and the gap at the other end is small.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A film roll cutting mechanism comprises a U-shaped knife frame, a transmission roller, a bottom roller and a knife roller arranged in the knife frame from bottom to top, the transmission roller, bottom roller and knife roller are connected in sequence, the axes of the transmission roller and bottom roller are parallel to each other and are both horizontal, both ends of the knife roller are rotatably connected with sliders, the two sliders are respectively vertically slidably connected to two vertical plates located on both sides of the knife frame, the top of each slider is connected to a pressure block, the pressure blocks are respectively slidably connected to the corresponding vertical plates, and the top of each vertical plate is provided with a handwheel for driving the corresponding pressure block to move vertically, a laser emitter and a laser receiver are sequentially arranged on the inner side of one of the pressure blocks in the horizontal direction, the laser emitted by the laser emitter is horizontal, and a reflector is provided on the inner side of the other pressure block. When the axis of the knife roller is horizontal, the laser emitted by the laser emitter is reflected by the reflector and received by the laser receiver.

[0007] Furthermore, the laser emitter is a line laser, and the laser emitted by the laser emitter is fan-shaped in the horizontal plane toward the reflector and forms a horizontal line on the reflector, which is perpendicular to the axis of the knife roller; the reflecting surface of the reflector is an arc surface, and when the axis of the knife roller is in the horizontal direction, the axis of the arc surface, the laser emitter and the laser receiver are located on the same horizontal plane.

[0008] Furthermore, parallel horizontal scale lines are provided on the inner side of the pressing block corresponding to the laser emitter, wherein one scale line, the laser emitter and the laser receiver are located on the same straight line, and the scale line is a level line.

[0009] Furthermore, a mounting plate whose position can be adjusted up and down is provided on the inner side of one of the pressing blocks, and the mounting plate is fixedly connected to the corresponding laser emitter and laser receiver, or reflector.

[0010] Furthermore, each vertical plate is provided with a vertical notch, and two pressing blocks are respectively located in the corresponding notches. Positions of the pressing blocks corresponding to the vertical plates are provided with sliding grooves with U-shaped cross-sections, and the sliding grooves are buckled on the vertical plates.

[0011] Furthermore, the pressing block is provided with a vertical first installation groove on the bottom surface of the sliding groove, the first installation groove is clamped with a first leaf spring, and the first leaf spring is pressed against the vertical plate.

[0012] Furthermore, a vertical second sliding groove is opened on one side surface of the sliding groove, a second leaf spring is clamped in the second sliding groove, and the second leaf spring is against the vertical plate.

[0013] The positive effects of this utility model are:

[0014] The utility model employs a laser emitter, a laser receiver, and an arc-shaped reflector mounted on each of the two pressing blocks of the rotary die-cutting machine. When the light reflected by the reflector forms a horizontal line passing through the laser emitter, it is received by the laser receiver, and this signal is displayed by an indicator light. This ensures a uniform gap between the cutter roller and the bottom roller, making it easy to maintain a consistent gap between the laser bottom roller and the cutter roller, thus avoiding the problem of a larger gap at one end and a smaller gap at the other. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view of the utility model;

[0016] Figure 2 yes Figure 1 It is the left view;

[0017] Figure 3 This is the optical path diagram when the axis of the knife roller and the axis of the bottom roller are not parallel;

[0018] Figure 4 This is the optical path diagram when the axis of the knife roller and the axis of the bottom roller are parallel;

[0019] Figure 5 yes Figure 4 Schematic diagram of the middle A direction;

[0020] Figure 6 It is a three-dimensional image of the briquette;

[0021] In the picture:

[0022] 1. Vertical plate; 2. Drive roller; 3. Bottom roller; 4. Knife roller; 5. Slider; 6. Pressure block; 7. First leaf spring; 8. First mounting slot; 9. Lead screw; 10. Hand wheel; 11. Notch; 12. Film; 13. Reflector; 14. Laser transmitter; 15. Second leaf spring; 16. Second mounting slot; 17. Laser receiver; 18. Scale mark; 19. Level line; 20. Slide; 21. Mounting plate. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figure 1 and Figure 2 The figure shows a film roll cutting mechanism comprising a U-shaped blade holder, comprising two vertical plates 1 and a bottom plate disposed between the two vertical plates 1. Each vertical plate 1 is provided with a vertical notch 11, with both sides of the notch 11 being vertical. Between the two vertical plates 1, from bottom to top, are a drive roller 2, a bottom roller 3, and a knife roller 4. These three rollers are connected in sequence via a gear transmission. The transmission connection structure is the same as that of existing rotary die-cutting machines and will not be further described here.

[0025] The axis of the transmission roller 2 and the axis of the bottom roller 3 are parallel to each other and are both horizontal. Both ends of the knife roller 4 and the two ends of the bottom roller 3 are rotatably connected with sliders 5, and the sliders 5 are respectively located in the corresponding notches 11 and are respectively vertically slidably connected to the corresponding vertical plates 1. The tops of the sliders 5 corresponding to the two ends of the knife roller 4 are connected with pressure blocks 6, and the pressure blocks 6 are respectively located in the corresponding notches 11 and are respectively slidably connected to the corresponding vertical plates 1. The top of each vertical plate 1 is fixedly connected with a nut at the notch 11, and the nut is threaded with a vertical lead screw 9. The lower end of the lead screw 9 is rotatably connected to the corresponding pressure block 6, and the upper end of the lead screw 9 is fixedly connected with a handwheel 10. When the handwheel 10 is turned, the pressure block 6 is driven to move up and down, thereby driving the sliders 5 at both ends of the knife roller 4 to move up and down, thereby adjusting the gap between the knife roller 4 and the bottom roller 3.

[0026] like Figure 2 and Figure 6 As shown, a laser emitter 14 and a laser receiver 17 are arranged in sequence along the horizontal direction on the left side of the right pressure block 6, and a reflector 13 is provided on the right side of the left pressure block 6. When the axis of the knife roller 4 is in the horizontal direction, the laser emitted by the laser emitter 14 is reflected by the reflector 13 and received by the laser receiver 17.

[0027] Combine Figure 3 、 Figure 4 and Figure 5 As shown, the laser emitter 14 is a line laser. The laser light emitted by the laser emitter 14 is fan-shaped in the horizontal plane and is directed toward the reflector 13, forming a horizontal line on the reflector 13. The horizontal line is perpendicular to the axis of the knife roller 4. The reflective surface of the reflector 13 is an arc surface, which is a portion of a cylindrical surface.

[0028] like Figure 4 As shown, turning handwheel 10 adjusts the ends of cutter roller 4 up and down. When the light reflected by reflector 13 forms a horizontal line passing through laser emitter 14, it is received by laser receiver 17, and this signal is displayed by an indicator light. At this point, the axis of the arc surface of reflector 13, laser emitter 14, and laser receiver 17 are on the same horizontal plane. The axis of cutter roller 4 is horizontal, meaning it is parallel to the axis of bottom roller 3, and the gap between them is uniform. Drive roller 2 then drives bottom roller 3 and cutter roller 4 to rotate, rolling the film as it passes through them.

[0029] Combine Figure 2 Figure 3 As shown in the figure, when the light reflected by the reflector 13 is a horizontal line located above the laser emitter 14, it means that the knife roller 4 is lower on the left and higher on the right, and the gap between the knife roller 4 and the bottom roller 3 is uneven, and corresponding adjustments need to be made until it is adjusted to Figure 4The status shown.

[0030] Since the reflective surface of the reflector 13 is a circular arc, it has an amplifying effect. Even if there is a slight deviation in the gap between the left and right ends of the blade roller 4 and the bottom roller 3, it will produce a large offset after being reflected to the inner side of the pressure block 6 corresponding to the laser emitter 14, thus making the adjustment of the gap deviation more precise.

[0031] Example 2

[0032] like Figure 5 and Figure 6 As shown, a mounting plate 21 is provided on the inner side of the pressing block 6 corresponding to the laser emitter 14. The mounting plate 21 has elongated holes near the four corners. Screws are screwed into the elongated holes to press the mounting plate 21 against the pressing block 6. The laser emitter 14 and the laser receiver 17 are both fixedly connected to the mounting plate 21.

[0033] The inner side of the mounting plate 21 is provided with parallel horizontal scale lines 18. One of these scale lines 18 passes through the laser transmitter 14 and the laser receiver 17 and serves as the level line 19. When the light reflected by the reflector 13 coincides with the level line 19, the gap between the cutter roller 4 and the bottom roller 3 is aligned. The scale values ​​adjacent to the scale lines indicate the deviation in the gap between the cutter roller 4 and the bottom roller 3. Since the pitch of the lead screw 9 is constant, the number of turns of the handwheel 10 required can also be determined.

[0034] Insert feeler gauges of the same specification between the knife roller 4 and the bottom roller 3 near both ends, clamp the feeler gauges between the knife roller 4 and the bottom roller 3, loosen the screws, adjust the position of the mounting plate 21 up and down, so that the light reflected by the reflector 13 coincides with the level line 19, and then tighten the screws, so that the utility model can be conveniently calibrated.

[0035] Example 3

[0036] like Figure 1 、 Figure 4 and Figure 6 As shown, the difference between this embodiment and embodiment 2 is that:

[0037] The two pressing blocks 6 are respectively located in the corresponding notches 11 . Positions of the pressing blocks 6 corresponding to the vertical plate 1 are each provided with a sliding groove 20 with a U-shaped cross section. The sliding groove 20 is buckled inside the notches 11 on the vertical plate 1 .

[0038] Two mutually parallel vertical first mounting grooves 8 are formed on the bottom surface of one of the sliding grooves 20 of the pressing block 6 . An arc-shaped first leaf spring 7 is clamped in the first mounting groove 8 . The first leaf spring 7 rests on the vertical plate 1 .

[0039] A second vertical sliding groove 20 is formed on the side surface of the two sliding grooves 20 on each pressing block 6 . An arc-shaped second leaf spring 15 is clamped in the second sliding groove 20 . The second leaf spring 15 rests on the vertical plate 1 .

[0040] Under the action of the first leaf spring 7 and the second leaf spring 15, as the pressure block 6 moves up and down, the other side surface of the chute 20 and the bottom surface of one of the chute 20 of each pressure block 6 always remain in close contact with the vertical plate 1. By compensating the gap between the chute 20 and the vertical plate 1 by the first leaf spring 7 and the second leaf spring 15, the pressure block 6 can move vertically stably, thereby ensuring the accuracy of the gap adjustment between the blade roller 4 and the bottom roller 3.

[0041] The above-mentioned embodiments are described in a relatively detailed and specific manner, expressing preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, they are not limited to the present invention alone, and the patent scope of the present invention cannot be limited solely by these embodiments. That is, any equivalent changes or modifications made to the spirit disclosed by the present invention, for researchers or technicians in this field, without departing from the structure of the present invention, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present invention.

Claims

1. A film roll cutting mechanism, characterized in that: The utility model comprises a U-shaped tool holder, a transmission roller (2), a bottom roller (3) and a knife roller (4) arranged in the tool holder from bottom to top, wherein the transmission roller (2), the bottom roller (3) and the knife roller (4) are sequentially connected in transmission, the axes of the transmission roller (2) and the bottom roller (3) are parallel to each other and are both in the horizontal direction, the two ends of the knife roller (4) are rotatably connected with sliders (5), the two sliders (5) are respectively connected to the two vertical plates (1) located on both sides of the tool holder in a vertical sliding manner, the top of each slider (5) is connected to a pressure block (6), and the pressure block (6) is respectively connected to the corresponding vertical plate. (1) Sliding connection, the top of each vertical plate (1) is provided with a hand wheel (10) for driving the corresponding pressing block (6) to move vertically, the inner side of one of the pressing blocks (6) is provided with a laser emitter (14) and a laser receiver (17) in sequence along the horizontal direction, the laser emitted by the laser emitter (14) is in the horizontal direction, and the inner side of the other pressing block (6) is provided with a reflector (13), when the axis of the knife roller (4) is in the horizontal direction, the laser emitted by the laser emitter (14) is reflected by the reflector (13) and received by the laser receiver (17).

2. A film roll cutting mechanism according to claim 1, characterized in that: The laser emitter (14) is a line laser. The laser emitted by the laser emitter (14) is fan-shaped in a horizontal plane and is emitted toward the reflector (13) to form a horizontal line on the reflector (13). The horizontal line is perpendicular to the axis of the knife roller (4). The reflecting surface of the reflector (13) is an arc surface. When the axis of the knife roller (4) is in a horizontal direction, the axis of the arc surface, the laser emitter (14) and the laser receiver (17) are located on the same horizontal plane.

3. A film roll cutting mechanism according to claim 2, characterized in that: The inner side of the pressing block (6) corresponding to the laser emitter (14) is provided with parallel horizontal scale lines (18), wherein one scale line (18), the laser emitter (14) and the laser receiver (17) are located on the same straight line, and the scale line (18) is a level line (19).

4. The film roll cutting mechanism according to claim 1, characterized in that: A mounting plate (21) whose position can be adjusted up and down is provided on the inner side of one of the pressing blocks (6); the mounting plate (21) is fixedly connected to the corresponding laser emitter (14) and laser receiver (17), or reflector (13).

5. The film roll cutting mechanism according to claim 1, characterized in that: Each vertical plate (1) is provided with a vertical notch (11), and two pressing blocks (6) are respectively located in the corresponding notches (11). Positions of the pressing blocks (6) corresponding to the vertical plates (1) are provided with a sliding groove (20) with a U-shaped cross section, and the sliding groove (20) is buckled on the vertical plates (1).

6. The film roll cutting mechanism according to claim 5, characterized in that: The pressing block (6) is provided with a vertical first installation groove (8) on the bottom surface of the slide groove (20), and the first installation groove (8) is clamped with a first leaf spring (7), and the first leaf spring (7) is pressed against the vertical plate (1).

7. The film roll cutting mechanism according to claim 5, characterized in that: A vertical second sliding groove (20) is provided on one side surface of the sliding groove (20), a second leaf spring (15) is clamped in the second sliding groove (20), and the second leaf spring (15) is pressed against the vertical plate (1).

Images