Automatic reject die cutting device for defective paper

Abstract

The utility model discloses a paper die cutting technical field's a kind of defective product paper automatic rejection die cutting device, to solve the problem of inconvenient rejection of defective product generated in the paper die cutting process in prior art. It includes paper feeding mechanism, cutting mechanism and material receiving mechanism, at least one group of sensors is provided between paper feeding mechanism and cutting mechanism, both sides of material receiving mechanism are equipped with mounting bracket, feed shaft is rotatably arranged between two mounting brackets, adhesive tape roll is installed on feed shaft, the outside of adhesive tape roll is adhesive surface, feed shaft can move in the vertical direction of mounting bracket, material receiving shaft is also installed between two mounting brackets, and material receiving roll is installed on material receiving shaft;The utility model is used to detect the position of defective product in paper die cutting work, and automatically rejects corresponding paper according to the position of defective product paper, since adaptive automation equipment, convenient operation, can avoid secondary damage, with excellent application prospect.

Description

Technical Field

[0001] This utility model relates to an automatic rejection die-cutting device for defective paper, belonging to the field of paper die-cutting technology. Background Technology

[0002] Paper die-cutting machines are used to cut rolls of paper into individual sheets for subsequent production and packaging. Currently, during the transportation of wide-width rolls of paper, edge damage is inevitable. From an economic perspective, such damage is locally cut with a die to ensure the reuse of other parts. This results in a discontinuous, irregular, and incomplete state of the original paper within a certain distance of the roll. Today's wide-width roll die-cutting machines operate on a continuous, uninterrupted paper feeding mode and lack automatic identification and isolation functions. To prevent defective products from being mixed into the bulk shipment during roll die-cutting, conventional operations involve manual selection or secondary inspection after the finished product is converted from roll to sheet. This not only increases costs but also poses a risk of secondary product damage. If manual screening is performed while the equipment is operating, it is not only unsuitable for continuous production and delays the production process but also easily creates significant operational safety hazards. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic rejection die-cutting device for defective paper. This device detects the position of defective paper during the paper die-cutting process and automatically rejects the corresponding paper based on its position. Because it is compatible with automated equipment, easy to operate, and can avoid secondary damage, it has excellent application prospects.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] This utility model provides an automatic rejection die-cutting device for defective paper, including a paper feeding mechanism, a cutting mechanism, and a receiving mechanism. The receiving mechanism is used to temporarily store the paper cut by the cutting mechanism. At least one set of sensors is provided between the paper feeding mechanism and the cutting mechanism. The sensors are used to detect whether there are defects on both sides of the paper. Mounting frames are installed on both sides of the receiving mechanism. A feeding shaft is rotatably arranged between the two mounting frames. A tape roll is installed on the feeding shaft. The outer side of the tape roll is adhesive. The feeding shaft can move in the vertical direction of the mounting frames. A receiving shaft is also installed between the two mounting frames. A receiving roll is installed on the receiving shaft. A first driving device is also installed on the mounting frame to drive the receiving roll to rotate so that the tape can be wrapped on the receiving roll.

[0006] Specifically, each of the two mounting brackets is equipped with a slide cylinder, and each of the two slide cylinders is equipped with a bearing seat. The feed shaft is rotatably mounted on the two bearing seats.

[0007] Specifically, the tape roll is a double-sided tape, and an anti-stick layer is provided on one of the adhesive sides of the tape roll. The mounting frame is also provided with a mechanism for storing the roll of anti-stick layer.

[0008] Specifically, the winding mechanism includes a winding shaft rotatably disposed between two mounting frames, on which winding blocks are mounted, and a second driving device for driving the winding shaft to rotate is also provided on the mounting frames.

[0009] Specifically, the feeding shaft is equipped with multiple tape rolls, the take-up shaft is equipped with multiple take-up rolls, and the roll shaft is equipped with multiple roll blocks. Each tape roll can correspond one-to-one with the corresponding take-up roll and roll block.

[0010] Specifically, the feeding shaft, the take-up shaft, and the winding shaft are all composed of multiple splicing sections, and each splicing section is equipped with at most one of the following: tape roll, take-up roll, or winding block.

[0011] Specifically, a detection device for detecting the tension of the pulled-out tape is also provided between the two mounting brackets.

[0012] Specifically, the detection device includes two sets of mounting plates, which are respectively mounted on two mounting frames. Each set of mounting plates includes two plates, and a sliding rod is installed between the two opposing plates. A slider is slidably mounted on each of the two sliding rods. A spring is installed on one of the mounting plates to drive the slider away from the mounting plate on that side. The mounting frame is provided with a detection mechanism for detecting the position of the slider. A pressure shaft is rotatably connected between the two sliders on the two mounting plates. The sliding direction of the pressure shaft intersects with the rewinding direction of the tape roll.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0014] This invention detects defective paper during the paper feeding process and places a retractable tape roll at the receiving mechanism to contact the defective paper. The tape adheres to the defective paper, allowing for quick removal of defective portions during production. When removal is no longer needed, the tape roll is moved upwards to ensure normal production. The device eliminates the need for manual sorting, is fast and efficient, and ensures efficient paper removal without disrupting normal processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the die-cutting device provided in this embodiment of the utility model;

[0016] Figure 2 This is a utility model Figure 1 Enlarged view of section A of the die-cutting device provided in the embodiment;

[0017] Figure 3 This is a front view of the die-cutting apparatus provided in this embodiment of the utility model;

[0018] Figure 4 This is a utility model Figure 3 A BB-direction sectional view of the die-cutting apparatus provided in the embodiment;

[0019] Figure 5 This is a utility model Figure 4 Enlarged view of the structure at point C of the die-cutting device provided in the embodiment;

[0020] Reference numerals: 1. Paper feeding mechanism; 2. Cutting mechanism; 3. Receiving mechanism; 4. Sensor; 5. Mounting frame; 6. Feeding shaft; 7. Tape roll; 8. Receiving shaft; 9. Receiving roll; 10. Roll shaft; 11. Roll block; 12. First drive device; 13. Slide cylinder; 14. Bearing seat; 15. Mounting plate; 16. Slide rod; 17. Slider; 18. Spring; 19. Detection mechanism; 20. Pressure shaft. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example:

[0024] This utility model provides an automatic rejection die-cutting device for defective paper. It detects the location of defective paper during the die-cutting process and automatically rejects the corresponding paper based on its position. Because it is compatible with automated equipment, easy to operate, and avoids secondary damage, it has excellent application prospects. To realize the structural functions of the device, it includes a paper feeding mechanism 1, a cutting mechanism 2, and a receiving mechanism 3. The paper feeding mechanism 1 should be able to store, wind, and push the paper. The cutting mechanism 2 is used to cut the pushed paper. The receiving mechanism 3 is used to temporarily store the paper cut by the cutting mechanism 2. Since this is existing technology, it will not be described in detail here. To achieve rapid and automatic rejection of defective paper, at least one set of two sensors 4 needs to be installed between the paper feeding mechanism 1 and the cutting mechanism 2, respectively positioned on both sides of the paper conveying path. Sensor 4 is used to detect whether there are defects on the edges of the paper, such as using U-shaped photoelectric sensors or infrared sensors. When edge defects occur on the paper, the signal detected by sensor 4 is fed back to the equipment. Based on the paper conveying speed, it is calculated how long it will take for the defective position to reach the receiving mechanism 3, thus determining whether the corresponding cut paper is in a defect-free state. To facilitate the automatic rejection of these cut defective papers, mounting brackets 5 can be installed on both sides of the receiving mechanism 3, such as... Figure 1 and Figure 2As shown, specifically, a feed shaft 6 is rotatably arranged between the two mounting frames 5, and a tape roll 7 is mounted on the feed shaft 6. At least the outer side of the tape roll 7 is designed to be adhesive so that it can adhere to paper. The feed shaft 6 is designed to move vertically in the mounting frame 5 (the specific installation method is not limited here). When there is defective material at the take-up mechanism 3, the feed shaft 6 lowers to bring the tape roll 7 into contact with the defective paper. To collect the paper, a take-up shaft 8 is also installed between the two mounting frames 5, and a take-up roll 9 is mounted on the take-up shaft 8. A first drive device 12 is installed on the mounting frame 5 to drive the take-up roll 9 to rotate so that the tape can wrap around the take-up roll 9. After the tape roll 7 adheres to the paper, it can be wound onto the take-up roll 9 by the drive of the first drive device 12, thus achieving waste paper storage. Here, the first drive device 12 can be as follows: Figure 1 The specific implementation of belt drive is not unique. It should be noted that the feed shaft 6 should be equipped with a corresponding damping device to prevent the tape roll 7 from being over-unwound due to excessively low resistance.

[0025] This utility model provides an automatic rejection die-cutting device for defective paper, specifically a device for driving the feed shaft 6 to move vertically. Specifically, a slide cylinder 13 can be installed on both mounting brackets 5, and a bearing seat 14 can be installed on the output end of both slide cylinders 13. The feed shaft 6 can then be rotatably mounted on the two bearing seats 14. During control, it should be noted that the relative height of the two bearing seats 14 should be close to the same to avoid the tilt of the feed shaft 6 causing wrinkles when the tape is fed.

[0026] This utility model provides an automatic rejection die-cutting device for defective paper. Considering that when single-sided tape is wound up, only one side of the wound paper is adhered, meaning that the paper can still easily slip off the take-up roll 9 after the take-up shaft 8 takes up the paper, the tape roll 7 can be set to be double-sided tape. In this case, an anti-sticking layer is provided on one side of the adhesive surface of the tape roll 7. When the take-up roll 9 is wound up, the back of the tape can absorb the paper that is wound up behind, thereby ensuring the stability of the winding. In order to remove the anti-sticking layer and avoid affecting the operation of the equipment, a roll mechanism for storing the anti-sticking layer can also be provided on the mounting frame 5. In a preferred embodiment, the winding mechanism may include a winding shaft 10 rotatably disposed between two mounting frames 5. Specifically, a winding block 11 is mounted on the winding shaft 10, and a second driving device for driving the winding shaft 10 to rotate is also provided on the mounting frame 5. Its operating principle is similar to that of the take-up roll 9, and will not be described in detail here. However, it should be noted that the take-up linear speeds of the winding shaft 10 and the take-up shaft 8 need to be controlled to be equal.

[0027] This utility model provides an automatic rejection die-cutting device for defective paper. Considering the width of the paper or the simultaneous die-cutting of multiple papers, or to adapt to the cutting of large-sized paper, multiple tape rolls 7 are installed on the feed shaft 6, multiple take-up rolls 9 are installed on the take-up shaft 8, and multiple roll blocks 11 are installed on the roll shaft 10. That is, each tape roll 7 can correspond one-to-one with the corresponding take-up roll 9 and roll block 11, so that it can be wrapped with multiple tapes at different width positions of the paper, avoiding local falling off and affecting the winding effect.

[0028] This utility model provides an automatic rejection die-cutting device for defective paper. In order to facilitate the disassembly and assembly of a single tape roll 7, a single take-up roll 9, and a single roll block 11 for replacement when the material is full or short, the feeding shaft 6, the take-up shaft 8, and the roll shaft 10 can all be composed of multiple splicing sections. At this time, each splicing section is equipped with only one of the tape roll 7, the take-up roll 9, or the roll block 11.

[0029] This utility model provides an automatic rejection die-cutting device for defective paper. Considering that the tape pull-out amplitude changes during the lifting and lowering of the feed shaft 6, affecting the winding process and speed, a detection device for detecting the tension of the pulled-out tape can be provided between the two mounting brackets 5. This device detects the tape tension to determine whether the motor needs motion compensation. In a preferred embodiment, the detection device can include two sets of mounting plates 15. Figure 2 As shown, the two sets of mounting plates 15 are respectively set on two mounting frames 5. Each set of mounting plates 15 includes two plates, and a slide rod 16 is installed between the two opposing plates. A slider 17 is slidably installed on each of the two slide rods 16. A spring 18 is installed on one of the mounting plates 15 to drive the slider 17 away from the mounting plate 15 on that side. At the same time, a detection mechanism 19 for detecting the position of the slider 17 is provided on the mounting frame 5. Finally, a pressure shaft 20 is rotatably connected between the two sliders 17 on the two mounting plates 15. The pressure shaft 20 can be pressed against the surface where the tape is pulled out by the force of the spring 18. When the tape is in a taut state, the spring 18 contracts, and the detection mechanism 19 cannot detect the position of the slider 17. When the tape is in a loose state, the spring 18 drives the slider 17 to push forward and is detected by the detection mechanism 19, thereby determining that motion compensation is needed. In order to ensure an effective braking distance, the sliding direction of the pressure shaft 20 needs to be set to intersect with the retraction direction of the tape roll 7.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automatic rejection die-cutting device for defective paper, comprising a paper feeding mechanism (1), a cutting mechanism (2), and a receiving mechanism (3), wherein the receiving mechanism (3) is used to temporarily store the paper cut by the cutting mechanism (2), characterized in that, At least one set of sensors (4) is provided between the paper feeding mechanism (1) and the cutting mechanism (2). The sensors (4) are used to detect whether there are defects on both sides of the paper. Mounting frames (5) are installed on both sides of the receiving mechanism (3). A feeding shaft (6) is rotatably arranged between the two mounting frames (5). A tape roll (7) is installed on the feeding shaft (6). The outer side of the tape roll (7) is an adhesive surface. The feeding shaft (6) can move in the vertical direction of the mounting frame (5). A receiving shaft (8) is also installed between the two mounting frames (5). A receiving roll (9) is installed on the receiving shaft (8). A first driving device (12) for driving the receiving roll (9) to rotate so that the tape can be wrapped on the receiving roll (9) is also installed on the mounting frame (5).

2. The automatic rejection die-cutting device for defective paper according to claim 1, characterized in that, Each of the two mounting brackets (5) is equipped with a slide cylinder (13), and each of the two slide cylinders (13) is equipped with a bearing seat (14). The feed shaft (6) is rotatably mounted on the two bearing seats (14).

3. The automatic rejection die-cutting device for defective paper according to claim 1, characterized in that, The tape roll (7) is a double-sided tape. One side of the adhesive surface of the tape roll (7) is provided with an anti-stick layer. The mounting frame (5) is also provided with a roll material mechanism for storing the anti-stick layer.

4. The automatic rejection die-cutting device for defective paper according to claim 3, characterized in that, The winding mechanism includes a winding shaft (10) rotatably disposed between two mounting frames (5), on which a winding block (11) is mounted, and a second driving device for driving the winding shaft (10) to rotate is also provided on the mounting frame (5).

5. The automatic rejection die-cutting device for defective paper according to claim 4, characterized in that, Multiple tape rolls (7) are installed on the feed shaft (6), multiple take-up rolls (9) are installed on the take-up shaft (8), and multiple roll blocks (11) are installed on the roll shaft (10). Each tape roll (7) can correspond one-to-one with the corresponding take-up roll (9) and roll block (11).

6. The automatic rejection die-cutting device for defective paper according to claim 5, characterized in that, The feeding shaft (6), the receiving shaft (8), and the winding shaft (10) are all composed of multiple splicing sections, and each splicing section is equipped with at most one of the following: tape roll (7), receiving roll (9), or winding block (11).

7. The automatic rejection die-cutting device for defective paper according to claim 1, characterized in that, A detection device for detecting the tension of the pulled-out tape is also provided between the two mounting brackets (5).

8. The automatic rejection die-cutting device for defective paper according to claim 7, characterized in that, The detection device includes two sets of mounting plates (15), which are respectively set on two mounting frames (5). Each set of mounting plates (15) includes two plates, and a slide rod (16) is installed between the two opposite plates. A slider (17) is slidably installed on each of the two slide rods (16). A spring (18) for driving the slider (17) away from the mounting plate (15) is installed on one of the mounting plates (15). A detection mechanism (19) for detecting the position of the slider (17) is provided on the mounting frame (5). A pressure shaft (20) is rotatably connected between the two sliders (17) on the two mounting plates (15). The sliding direction of the pressure shaft (20) intersects with the recycling direction of the tape roll (7).

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