High-precision back cutting device

Abstract

The utility model relates to a high-precision back cutting device. The device comprises a machine frame, the machine frame comprises a frame body and a pressing plate installed on the frame body, and a guide groove is formed in the frame body; the lower knife roll assembly comprises a lower knife roll rotationally connected to the rack; the upper knife roll assembly comprises an adjusting seat and an upper knife roll, the adjusting seat is movably connected into the guide groove, the upper knife roll is rotationally connected to the adjusting seat and is opposite to the lower knife roll, an elastic element is arranged between one end of the adjusting seat and the bottom wall of the guide groove, and the elastic element is used for providing force for the upper knife roll to be away from the lower knife roll; the screw micrometer is installed on the pressing plate and abuts against the other end of the adjusting seat. According to the high-precision back cutting device, the adaptability and the operation convenience of the device are improved while the precise cutting effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing and composite processing technical field, especially a high-precision back cutting device. BACKGROUND

[0002] In the modern printing and composite processing industry, the production process of many products needs to accurately cut the base paper adhered on the antenna, label or other composite materials, so as to tear off the excess base paper, improve the quality and appearance of the product. However, the existing back cutting device has the following problems:

[0003] The existing fixed cutting device is easily affected by the factors such as material thickness change and processing equipment tolerance due to the unprecise adjustment of the height of the cutting knife, which leads to the damage of the bottom material due to cutting too deep, or the incomplete cutting of the base paper due to cutting too shallow, affecting the subsequent tearing effect;

[0004] Part of the cutting device adopts a mechanical fixed knife roller, which needs to disassemble multiple components to adjust the height, not only time-consuming and laborious, but also difficult to ensure the adjustment accuracy, affecting the production efficiency, in addition, the imbalance of the cutting height inside and outside will also lead to unstable product quality;

[0005] The traditional cutting device adopts a fixed installation method, which cannot be quickly disassembled, leading to a long downtime when replacing the cutting tool or adjusting the cutting parameters, reducing the production efficiency. At the same time, the complex disassembly process increases the operation difficulty and maintenance cost. SUMMARY

[0006] Therefore, the utility model provides a high-precision back cutting device, which ensures accurate cutting effect while improving the adaptability and operation convenience of the device.

[0007] To solve the above technical problems, the utility model provides a high-precision back cutting device, which comprises a rack and a:

[0008] The rack comprises a frame body and a pressing plate installed on the frame body, and the frame body is provided with a guide groove;

[0009] The lower knife roller assembly comprises a lower knife roller rotatably connected to the rack;

[0010] The upper knife roller assembly comprises an adjusting seat movably connected to the guide groove and an upper knife roller connected to the adjusting seat;

[0011] The screw micrometer is installed on the pressing plate and abuts against the other end of the adjusting seat.

[0012] In an embodiment of the utility model, the lower knife roller is provided with a magnetic roller.

[0013] In one embodiment of this utility model, an elastic element is provided between one end of the adjusting seat and the bottom wall of the guide groove, and the elastic element is used to provide a force to move the upper cutter roller away from the lower cutter roller.

[0014] In one embodiment of this utility model, two magnetic rollers are provided with an adjustable spacing.

[0015] In one embodiment of this utility model, a lead screw adjustment mechanism is provided at the bottom of the frame to adjust the relative position of the frame and the strip to be cut.

[0016] In one embodiment of this utility model, the frame is provided with an installation groove, and a U-shaped guide block is provided in the installation groove. One end of the opening of the U-shaped guide block faces the pressure plate and is connected to the pressure plate. The guide groove is constructed as the opening of the U-shaped guide block.

[0017] In one embodiment of this utility model, the bottom of the adjusting seat is provided with a mounting hole, and the elastic element includes a mounting post installed on the bottom wall of the guide groove and a spring sleeved on the mounting post, the spring abutting against the bottom wall of the mounting hole.

[0018] In one embodiment of this utility model, the adjusting seat is a bearing seat.

[0019] In one embodiment of this utility model, a clamping assembly is further included. The clamping assembly includes a handle, a connecting rod, a connecting rod seat, a cam, and an elastic pressure seat. The elastic pressure seat is disposed on the upper end face of the pressure plate. The frame is provided with a connecting column that passes through the pressure plate and is connected to the connecting rod seat. The connecting rod is rotatably connected to the connecting rod seat and is provided with a cam that can abut against the elastic pressure seat.

[0020] In one embodiment of this utility model, the elastic pressure seat includes two mounting plates and a disc spring located between the two mounting plates.

[0021] In one embodiment of this utility model, the pressure plate is provided with a guide sleeve, and the frame is provided with a guide post that cooperates with the guide sleeve.

[0022] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0023] This invention discloses a high-precision back-cutting device that achieves precise control of the cutter height by using a micrometer to adjust the position of the cutter roller, ensuring that it only cuts through the material to be cut (such as antenna backing paper) without damaging other antenna layers. This fine adjustment mechanism allows the device to maintain consistent and accurate cutting even when dealing with extremely thin backing paper.

[0024] The utility model discloses adopt the structure that the left and right two ends are provided with the adjusting seat, make the height of two sides cutter roll can be independently regulated. This not only can compensate the problem of inside and outside inconsistency caused by equipment installation or process error, but also can effectively solve the problem that the fixed cutting knife often appears one side cutting not to be thorough or overcut, further improve cutting quality.

[0025] The utility model discloses a press tightly subassembly is set up, realizes the quick loosening and installation of press plate. The operator only needs to drive cam through handle, can loosen elastic pressure seat quickly, and further dismantles press plate, and the convenient maintenance operation such as wearing, changing is carried out. When reassembling, through the cooperation of guide sleeve and guide column, ensure that press plate can restore the original position quickly and accurately, improve the operation efficiency and maintenance convenience of equipment.

[0026] The utility model discloses a magnetic roller is set up on lower cutter roll, and its distance is adjustable, can flexibly adapt to paper tape of different width. Replace the spring of different size can carry out the rough adjustment of the distance between upper cutter roll and lower cutter roll, then realize accurate adjustment with the aid of screw micrometer, make equipment applicable to most white cardboard, release paper and various kinds of base product with any plastic film or coating on the market etc. The device realizes the accurate adjustment of the relative position of rack and the cutting tape through the screw rod adjusting mechanism of rack bottom, ensures that the center of paper tape and cutter roll center are consistent, further improves cutting accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to make the content of the utility model more easily be clearly understood, the following according to the specific embodiment of the utility model and combining with the drawings, the utility model is further detailed.

[0028] Figure 1 It is the structure schematic diagram of one side of the utility model high-precision back cutting device.

[0029] Figure 2 It is the structure schematic diagram of the other side of the utility model high-precision back cutting device.

[0030] EXPLANATION OF THE DRAWINGS OF THE SPECIFICATION:

[0031] 1, rack;11, rack body;12, press plate;13, guide groove;14, mounting groove;15, U-shaped guide block;

[0032] 2, lower cutter roll assembly;21, lower cutter roll;22, magnetic roller;

[0033] 3, upper cutter roll assembly;31, upper cutter roll;32, adjusting seat;33, elastic element;

[0034] 4, screw micrometer;

[0035] 5, screw rod adjusting mechanism;

[0036] 6, compression assembly; 61, handle; 62, connecting rod; 63, connecting rod seat; 64, cam; 65, elastic pressing seat; 651, mounting plate; 652, disc spring; 66, guide column; 67, guide sleeve; 68, limit pin; 69, limit block. DETAILED DESCRIPTION

[0037] The utility model will be further explained in connection with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0038] In the utility model, if the direction (up, down, left, right, front and back) is described, it is only for the convenience of describing the technical scheme of the utility model, and is not indicated or implied that the indicated technical features must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the utility model.

[0039] In the utility model, the meaning of "several" is one or more, and the meaning of "multiple" is two or more, and "greater than", "less than", "more than" and the like are understood as not including the number; "above", "below", "within" and the like are understood as including the number. In the description of the utility model, if "first" and "second" are described, they are only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0040] In the utility model, unless otherwise explicitly limited, the words "set", "installed", "connected" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected, or can be electrically connected or capable of communicating with each other; can be the communication or interaction relationship between two elements inside or two elements. The person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0041] Reference Figure 1 , Figure 2 As shown in the figure, the utility model discloses a high-precision back cutting device, which comprises a rack 1 and a lower knife roll assembly 2 connected to the rack 1.

[0042] The rack 1 comprises a frame body 11 and a pressing plate 12 installed on the frame body 11, and the frame body 11 is provided with a guide groove 13;

[0043] The lower knife roll assembly 2 comprises a lower knife roll 21 rotatably connected to the rack 1.

[0044] The upper knife roller assembly 3 comprises an adjusting seat 32 movably connected in the guide groove 13, an upper knife roller 31 rotatably connected to the adjusting seat 32 and arranged opposite to the lower knife roller 21, and an elastic element 33 arranged between one end of the adjusting seat 32 and the bottom wall of the guide groove 13, which is used to provide a force for moving the upper knife roller 31 away from the lower knife roller 21. The upper knife roller 31 is provided with an adjusting seat 32 at each end.

[0045] The micrometer screw 4 is mounted on the pressing plate 12 and abuts against the other end of the adjusting seat 32.

[0046] The device can be used to accurately cut through the completed composite material to be cut (such as antenna base paper) so as to tear off the excess base paper. By adjusting the position of the upper knife roller 31 through the micrometer screw, the height of the cutting knife can be accurately controlled, thereby ensuring that only the base paper is cut through without damaging other adhesive processed film layers. Meanwhile, the two sides can be independently adjusted so that the cutting knife heights of the two sides are consistent, thereby fundamentally solving the problem that the fixed cutting knife often causes one side to be not cut through or overcut due to the difference in height between the inside and outside.

[0047] It can be understood that the micrometer screw 4 is mounted on the pressing plate 12 and abuts against the other end of the adjusting seat 32. The adjusting seat 32 is connected to the upper knife roller 31 to form an integral adjusting unit by being mounted in the guide groove 13 of the frame 1. This structure enables the interaction between the pressing plate 12 and the adjusting seat 32 to directly affect the position of the upper knife roller 31. When the operator rotates the micrometer screw 4, due to the characteristics of the internal thread structure, a fixed and small linear displacement is generated every rotation. The displacement value is proportional to the lead of the thread (pitch), so even a very small change in the rotation angle can be accurately converted into the linear movement of the upper knife roller 31 along the guide groove 13. The elastic element 33 is used to provide a force downward at one end of the adjusting seat 32 to force the upper knife roller 31 away from the lower knife roller 21. The micrometer screw 4 realizes fine positioning and accurate cutting of the material by its precise adjustment and the force of the elastic element 33, so that the error is controlled within a thousandth of a millimeter.

[0048] In one embodiment, the lower knife roller 21 is provided with a magnetic roller 22, and two magnetic rollers 22 are arranged with an adjustable interval.

[0049] In one embodiment, the frame body 11 is provided at the bottom with a lead screw adjusting mechanism 5 to adjust the relative position of the frame 1 and the material to be cut.

[0050] When the device is installed on the equipment, the center position can be adjusted by the lead screw adjusting mechanism 5 to match the center of the paper tape. For paper tapes of different widths, the opening distance of the magnetic rollers 22 can be adjusted to adapt.

[0051] In one embodiment, the frame body 11 is provided with a mounting groove 14, and a U-shaped guide block 15 is arranged in the mounting groove 14. One end of the U-shaped guide block 15 is open and faces the pressing plate 12 and is connected to the pressing plate 12 by a screw. The guide groove 13 is configured as the opening of the U-shaped guide block 15.

[0052] In one embodiment, the adjusting seat 32 is provided with a mounting hole at the bottom, and the elastic element 33 includes a mounting column arranged on the bottom wall of the guide groove 13 and a spring sleeved on the mounting column. The spring abuts against the bottom wall of the mounting hole.

[0053] When replacing paper strips of different thicknesses and different toughnesses, the height of the upper knife roller 31 and the lower knife roller 21 can be coarsely adjusted by replacing springs of different sizes, and then precisely adjusted by means of a micrometer.

[0054] It should be noted that the thickness of the paper that can be cut by the device depends on the distance between the roll shoulders of the upper knife roller 31 and the lower knife roller 21, which can be adjusted by replacing the spring. The device is suitable for most white card papers, release papers, and various substrate products with any plastic film or coating on the market. When replacing the spring, the screw between the pressing plate 12 and the U-shaped guide block 15 needs to be loosened, and the upper knife roller 31 and the adjusting seat 32 are removed, and then the spring between the adjusting seat 32 and the U-shaped guide block 15 is replaced.

[0055] In one embodiment, the adjusting seat 32 is a bearing seat.

[0056] In one embodiment, the device further includes a pressing assembly 6. The pressing assembly 6 includes a handle 61, a connecting rod 62, a connecting rod seat 63, a cam 64, and an elastic pressing seat 65. The elastic pressing seat is arranged on the upper end surface of the pressing plate 12. The frame is provided with a connecting column that passes through the pressing plate 12 and is connected to the connecting rod seat 63 (by a screw). The connecting rod 62 is rotationally connected to the connecting rod seat 63 and is provided with the cam 64 that can abut against the elastic pressing seat 65.

[0057] Specifically, the elastic pressing seat 65 includes two mounting plates 651 and a disc spring 652 between the two mounting plates 651.

[0058] Specifically, the pressing plate 12 is provided with a guide sleeve 67, and the upper end of the frame body 11 is provided with a guide column 66 that cooperates with the guide sleeve 67.

[0059] In addition, a limiting pin 68 is arranged at the connecting rod 62 and cooperates with a limiting block 69 on the pressing plate 12 to determine the cooperation position of the cam and the elastic pressing seat 65.

[0060] Through the above setting, the cam 64 is driven by the handle 61, the disc spring 652 of the elastic pressure seat 65 is quickly released, and the pressure plate 12 is quickly released. When operating, the guide sleeve 67 is pulled out of the guide column 66, the connecting rod seat 63 is removed, the pressure plate 12 is lifted upward, the pressure plate 12 is disassembled, and the belt is conveniently worn or replaced. After wearing the belt, the guide sleeve 67 and the guide column 66 are used to quickly and accurately install the pressure plate 12. Finally, the handle 61 is rotated to quickly press the pressure plate 12, and the position of the upper knife roller 31 is adjusted by the micrometer, so that the precision control of the cutting height is realized.

[0061] In addition to realizing the accurate cutting of the base paper, the device can also cooperate with different designs of the blade (such as a dashed line cutter type) to realize the folding paper cutter mark effect; the base paper after cutting can be wound simultaneously when the excess surface paper is torn off, or can be collected by other material collecting mechanisms after being torn off, to meet various process requirements.

[0062] The device is installed before the tensioning mechanism, and the belt running speed is affected by the tensioning force applied by the tensioning mechanism. When in use, the paper belt is passed through the gap between the upper knife roller 31 and the lower knife roller 21, wherein the upper knife roller 31 acts as an anvil, and the magnetic roller 22 on the lower knife roller 21 can attract the blade, so that the blade tip applies extrusion force to the paper belt, and finally realizes the cutting of the base paper. The micrometer can realize the accurate adjustment of the cutting height, so that the extremely thin base paper can be cut through, and other material layers will not be damaged. The base paper after cutting can be wound simultaneously when the excess surface paper is torn off, or can be collected by other material collecting mechanisms before the material collecting roll.

[0063] Finally, it should be explained that the above specific embodiments are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model is described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the utility model, and they should be covered in the scope of the claims of the utility model.

Claims

1. A high precision undercutting device, characterized in that Includes a frame (1) and a mounting on the frame (1): The frame (1) includes a frame body (11) and a pressure plate (12) installed on the frame body (11), and the frame body (11) is provided with a guide groove (13). The lower cutter roller assembly (2) includes a lower cutter roller (21) rotatably connected to the frame (1). The upper cutter roller assembly (3) includes an adjustment seat (32) movably connected in the guide groove (13) and an upper cutter roller (31) connected to the adjustment seat (32). The spiral micrometer (4) is mounted on the pressure plate (12) and abuts against the other end of the adjusting seat (32).

2. A high precision undercutting device according to claim 1, characterized in that A magnetic roller (22) is provided on the cutter roller (21).

3. A high precision undercutting device according to claim 1, characterized in that An elastic element (33) is provided between one end of the adjusting seat (32) and the guide groove (13), and the elastic element (33) is used to provide a force to move the upper cutter roller (31) away from the lower cutter roller (21).

4. A high precision undercutting device according to claim 2, characterized in that The magnetic rollers (22) are provided in two parts with an adjustable spacing.

5. A high precision undercutting device according to claim 1, characterized in that The bottom of the frame (11) is provided with a screw adjustment mechanism (5) to adjust the relative position of the frame (1) and the strip to be cut.

6. A high precision undercutting device according to claim 1, characterized in that The frame (11) has an installation groove (14) and a U-shaped guide block (15) is provided in the installation groove (14). One end of the opening of the U-shaped guide block (15) faces the pressure plate (12) and is connected to the pressure plate (12). The guide groove (13) is constructed as the opening of the U-shaped guide block (15).

7. A high precision undercutting device according to claim 3, characterized in that The bottom of the adjusting seat (32) is provided with an installation hole, and the elastic element (33) includes an installation post installed on the bottom wall of the guide groove (13) and a spring sleeved on the installation post, the spring abutting against the bottom wall of the installation hole.

8. A high precision undercutting device according to claim 1, characterized in that It also includes a clamping assembly (6), which includes a handle (61), a connecting rod (62), a connecting rod seat (63), a cam (64), and an elastic pressure seat (65). The elastic pressure seat (65) is disposed on the upper end face of the pressure plate (12). The frame is provided with a connecting column that passes through the pressure plate (12) and is connected to the connecting rod seat (63). The connecting rod (62) is rotatably connected to the connecting rod seat (63) and is provided with a cam (64) that can abut against the elastic pressure seat (65).

9. A high precision undercutting device according to claim 8, characterized in that The elastic pressure seat (65) includes two mounting plates (651) and a disc spring (652) located between the two mounting plates (651).

10. A high precision undercutting device according to claim 1, characterized in that The pressure plate (12) is provided with a guide sleeve (67), and the upper end of the frame (11) is provided with a guide post (66) that cooperates with the guide sleeve (67).

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