Production equipment for single-copy multi-copy printing paper

Abstract

The utility model relates to production equipment for single-copy multi-copy printing paper. The production equipment is characterized by comprising a plurality of sets of uncoiling seats, a deviation rectifying device, a marking device, an easy-to-tear line cutting device, a lock code pressing device, a pressed paper conveying device, a cutting device, a separation conveying device, a superposition conveying device, a vibration paper collecting table and a control system which are arranged in sequence, according to the production equipment, roll type carbonless copy paper is adopted as a raw material for continuous production, turnover of middle semi-finished products is reduced, and the production efficiency is improved; the paper cutting length is accurate, a finished product can be directly produced, secondary accurate cutting is not needed, working allowance does not need to be reserved, the processing loss of a traditional production mode is reduced, and the technical problems of high efficiency and low loss in production of single carbon-free copying printing paper are solved.

Description

Technical Field

[0001] This patent relates to a processing equipment for office paper products, and more particularly to a production equipment for single-sheet and multi-sheet printing paper. Background Technology

[0002] Carbonless copy paper is widely used in commercial document printing applications such as banking, taxation, telecommunications, postal services, insurance, and catering due to its advantages such as ease of use, cleanliness, high copying capacity, clear printing, convenient processing, neat overlay, and suitability for computer printing. It typically consists of two to six sheets. Also known as pressure-sensitive paper, carbonless copy paper comprises top, middle, and bottom sheets. The back of the top and middle sheets are coated with a color-developing agent (CB coating), while the front of the middle and bottom sheets are coated with a color-developing agent (CF coating). The front of the top sheet and the back of the bottom sheet are uncoated. It utilizes the principle of a chemical reaction between the color-developing agent layer in the microcapsules and the acidic clay in the color-developing agent layer to achieve color development. During printing, pressure is applied to the paper surface through the printing needle, crushing the microcapsules and causing the color-developing agent and color-developing agent to react and achieve the color development effect. Commonly used dot matrix printers have 2 to 6 layers (each layer is commonly referred to as a copy; the first copy can also be called the top copy, the second layer the second copy, and so on). They are primarily used for continuous printing with dot matrix printers, but can also be used for handwriting, achieving the effect of copying multiple copies simultaneously. With the increasing popularity of flatbed printers, various industries are frequently using them, leading to a growing demand for single-copy multi-part printing paper.

[0003] Based on the above requirements, our company has developed a single-sheet multi-part printing paper (as shown in the attached document). Figure 5 As shown, this is a type of flat-push printing paper with locking clips and tearable edges. This type of flat-push printing paper consists of a single layer of top paper, 0 to 6 layers of middle paper, and a single layer of bottom paper stacked together to form a single sheet with all four edges trimmed. The layers are riveted together on both sides by a row of evenly spaced locking clips. At the same time, a tear-edge line is pressed on the inside of each locking clip. The locking clip consists of symmetrical locking claws with three sides cut off and one side left uncut, with the cut head embedded downwards. There are at least two pairs of these locking claws combined to form a locking clip. The tear-edge line is a dotted cut line cut at intervals. The existing method for producing this type of single-sheet carbonless copy paper involves a production process of "roll paper unwinding - collating - locking - cutting edges - pressing fold lines - folding into semi-finished products - trimming to the finished size." This process has three problems: First, the production process is long, requiring the production of semi-finished products in a folded manner first, and then cutting them into finished products using a flat cutter, which requires multiple turnovers and results in low production efficiency. Second, the finished product sizes vary, and the secondary cutting process leads to significant waste of scrap material. Third, the flat cutter requires considerable pressure to hold the product in place, which can cause localized stress and color bleeding, reducing the product qualification rate and resulting in high production losses. Summary of the Invention

[0004] The purpose of this patent is to provide a production equipment for single-copy multi-copy printing paper, which solves the technical problem of high efficiency and low loss in the production of single-copy carbonless copy printing paper.

[0005] To achieve the above objectives, this patent adopts the following technical solution: a production equipment for single-copy multi-part printing paper, comprising multiple sets of unwinding stations, a web guiding device, a marking device, an easy-tear line cutting device, a pressure locking device, a paper pressing and conveying device, a cutting device, a separating and conveying device, a stacking and conveying device, and a vibrating paper receiving table arranged in sequence, and also includes a control system.

[0006] The locking device includes a grooved bottom mold and a locking knife mounted on an upper die. The bottom mold and the die are each mounted on a drive shaft, and the locking knife has at least two pairs of evenly spaced V-shaped cutting edges.

[0007] The paper pressing and conveying device includes a rubber paper pressing roller pressed on the bottom knife roller of the cutting device, a lower support roller alternately installed in front of the rubber paper pressing roller, and an upper pressure roller with adjustable height.

[0008] The separating conveyor device includes a lower conveyor belt and an upper conveyor belt, which are installed in a staggered manner with their surfaces closely touching.

[0009] The superimposed conveyor is connected to the separation conveyor and is lower than the separation conveyor, and its speed is lower than that of the separation conveyor. The superimposed conveyor includes a flat belt group consisting of two interconnected and angle-adjustable flat belt groups, and an auxiliary pressure roller on the flat belt group.

[0010] The control system includes a controller, a touch screen, an encoder installed at the end of the bottom cutter roller, and a servo motor installed at the end of the loading roller. The controller is electrically connected to the touch screen, the encoder, the servo motor, and the traction electromagnet.

[0011] Compared with existing technologies, the beneficial effects of this patent are as follows: The production equipment for single-copy multi-part printing paper described in this patent includes multiple sets of unwinding stations, a web guiding device, a marking device, a tear-off line cutting device, a locking code device, a paper pressing and conveying device, a cutting device, a separating and conveying device, a stacking and conveying device, a vibrating paper receiving table, and a control system arranged in sequence. This production equipment realizes the production process of "roll unwinding - web guiding - collating - cutting longitudinal tear-off lines - marking book separation - locking code - paper pressing and conveying - cutting into single copies - separating and conveying - stacking and conveying - vibrating paper receiving". Implementing this production process and equipment uses roll-type carbonless copy paper as raw material for continuous production, reducing the turnover of intermediate semi-finished products and improving production efficiency; the paper is cut to a precise length, and finished products can be produced directly without secondary precision cutting or leaving processing allowances, reducing processing losses in traditional production methods. This technical solution solves the technical problem of high efficiency and low loss of single-copy carbonless copy printing paper. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the production equipment for this patent.

[0013] Appendix Figure 2 This is a schematic diagram of the uncoiling seat in the production equipment of this patent.

[0014] Appendix Figure 3 This is a schematic diagram of the locking blade in the production equipment of this patent.

[0015] Appendix Figure 4 This is a schematic diagram of the control system in the production equipment of this patent.

[0016] Appendix Figure 5 This is a schematic diagram of the structure of a single finished product produced by the production equipment of this patent.

[0017] Explanation of symbols in the attached diagram: 1—Top paper, 2—Middle paper, 3—Bottom paper, 4—Single finished product, 10—Unwinding stand, 20—Correction device, 30—Marking device, 40—Easy-tear line cutting device, 50—Clocking device, 60—Paper pressing and conveying device, 70—Cutting device, 80—Separation and conveying device, 90—Stacking and conveying device, 95—Vibrating paper receiving table, 99—Control system. Detailed Implementation

[0018] To make the implementation purpose, technical solution and advantages of this patent clearer, the following detailed description of the patent solution by way of embodiments, in conjunction with the accompanying drawings, is provided.

[0019] As shown in the schematic diagram of the production equipment in Figure 1, this single-sheet multi-part printing paper production equipment includes multiple sets of unwinding stations 10, a web guiding device 20, a marking device 30, an easy-tear line cutting device 40, a pressure locking device 50, a paper pressing and conveying device 60, a cutting device 70, a separating and conveying device 80, a stacking and conveying device 90, and a vibrating paper receiving table 95, and also includes a control system 99. The structure of each piece of equipment is described in detail below.

[0020] As attached Figure 2As shown, the unwinding station 10 includes two wall plates 13. The upper paper 1, middle paper 2, and lower paper 3 are respectively mounted on an unwinding shaft 12. Both ends of the unwinding shaft 12 are mounted on the upper ends of the wall plates 13 via bearings. One end is also connected to a magnetic powder clutch 14, which is fixedly mounted on the upper side of one wall plate 13. At least one guide roller 11 is installed between the two wall plates 13. The unwinding of the roll material uses roll-type carbonless copy paper as raw material. The paper is unwound and conveyed backward by the guide roller 11 on the unwinding station 10 under the pulling force of the paper pressing and conveying device 60. This embodiment is for a three-part product, i.e., there are three unwinding stations 10. When producing a four-part product, one more unwinding station 10 is added. Similarly, for other numbers of parts, the corresponding number of unwinding stations 10 is added. That is, the number of unwinding stations 10 is configured according to the number of parts in the equipment configuration.

[0021] The technical solution of the correction device 20 can be composed of multiple high-precision CNC correction devices (utility model patent number: 2019224780041) designed by our company in 2019, which are stacked and combined. The correction device 20 is used to correct the deviation phenomenon that occurs during the transmission of paper after unwinding to the normal position.

[0022] The marking device 30 includes a pen clip 33, with a marker pen 31 clamped at one end and the other end connected to a traction electromagnet 32. The pen clip 33 also has a rotating shaft. By actuating the traction electromagnet 32, the marker pen 31 can be pressed down to draw a book-division mark on the paper. The timing of the traction electromagnet 32's actuation is based on the preset number of copies per book. The controller 991 of the control system 99 counts the number of cuts made by the cutting blade 72 of the cutting device 70. When the preset number of copies is reached, the controller activates the traction electromagnet 32.

[0023] As attached Figure 1 As shown, the easy-tear line cutting device 40 includes a bottom roller 41, and a circular dotted line cutter 42 is installed above and presses against the bottom roller 41. When the paper passes over the bottom roller 41, pressing down the circular dotted line cutter 42 continuously cuts longitudinal easy-tear lines on the paper. Depending on the product requirements, multiple circular dotted line cutters 42 can be installed simultaneously above the bottom roller 41 to cut multiple longitudinal easy-tear lines. Cutting longitudinal easy-tear lines using the easy-tear line cutting device 40: The circular dotted line cutter 42, pressed against the upper surface of the bottom roller 41, presses and cuts longitudinal easy-tear lines onto the sized paper. Using two sets of circular dotted line cutters 42, easy-tear lines can be cut on both sides of the paper.

[0024] The locking device 50 includes a grooved bottom mold 51 and a locking blade 53 mounted on an upper die 52. The bottom mold 51 and die 52 are each mounted on a drive shaft. The locking blade 53 presses against the bottom mold 51 with rotational force to press out the locking codes from the passing paper, thus riveting the layers of paper together. The shape of the locking blade 53 is shown in the attached figure. Figure 3 As shown, the cutting edge of the locking knife 53 includes at least two pairs of evenly spaced V-shaped cutting edges.

[0025] The paper conveying device 60 includes a rubber pressure roller 61 pressing against the bottom cutter roller 71 of the cutting device 70, a lower support roller 62 alternately installed in front of the rubber pressure roller 61, and an adjustable-height upper pressure roller 63. The pressing force of the rubber pressure roller 61, combined with the rotation of the bottom cutter roller 71, generates tension on the paper, causing it to be conveyed backward. The lower support roller 62 and upper pressure roller 63 increase the contact area of ​​the paper on the rubber pressure roller 61, ensuring stable conveying without slippage. The tension of the upper paper 1, middle paper 2, and lower paper 3 is determined by the braking force of the magnetic powder clutch 14 installed on the unwinding station 10. The braking force generated by the magnetic powder clutch 14 is controlled by adjusting its current; therefore, each magnetic powder clutch 14 is equipped with a current regulator to adjust the tension of each layer of paper, ensuring smooth paper conveying.

[0026] The cutting device 70 includes a bottom blade roller 71 and a blade loading roller 73. The blade loading roller 73 has a long groove for mounting a straight cutting blade 72. The cutting blade 72, mounted on the blade loading roller 73, cuts the paper on the bottom blade roller 71 by applying rotational pressure. To ensure the paper is cut under tension, the paper head enters the separating conveyor 80 before cutting. The linear speed of the separating conveyor 80 is set higher than the linear speed of the paper pressure conveyor, generating tension between the paper head and the rubber pressure roller 61, allowing the paper to be cut into a single finished product 4 under tension. The structure of the produced single finished product 4 is shown in the attached figure. Figure 5 As shown.

[0027] The separating conveyor device 80 includes a lower conveyor belt 81 and an upper conveyor belt 82. The lower conveyor belt 81 and the upper conveyor belt 82 are installed in a staggered manner and their surfaces are close together. When the paper comes out of the cutting device 70 but is not cut, it enters the lower conveyor belt 81 and the upper conveyor belt 82 under the rotation of the upper conveyor belt 82 and is clamped and conveyed backward. Since the conveying line speed of the separating conveyor device 80 is set to be higher than the line speed of the paper pressing conveyor device 60, the paper head to the rubber paper pressing roller 61 can generate tension under the action of belt friction before the paper is cut. After cutting, the single finished product 4 can quickly leave the cutting knife 72 and be conveyed backward quickly with intervals. The staggered installation of the lower conveyor belt 81 and the upper conveyor belt 82 with their surfaces close together allows the upper and lower belt rollers made of metal to be staggered with each other, so that there is elastic contact between the upper and lower belts. After the paper enters, it will not cause discoloration due to excessive local pressure.

[0028] The stacking conveyor 90 is connected after the separating conveyor 80 of the preceding process, and is lower than the separating conveyor 80, and its speed is lower than that of the separating conveyor 80. This allows the head of the following single finished product 4 to press against the tail of the preceding single finished product 4, so that the heads and tails of the preceding and following single finished products 4 can be stacked on each other. The stacking conveyor 90 includes a flat belt group 91 composed of two sets of interconnected and angle-adjustable flat belt groups. There is also an auxiliary pressure roller 92 on the flat belt group 91. The technical solution of the flat belt group 91 composed of two sets of angle-adjustable flat belt groups can raise the height of the single semi-finished product 4 during the subsequent conveying process to adapt to the operating height of the rear vibrating paper receiving table 95. The auxiliary pressure roller 92 on the flat belt group 91 uses its own weight and passive rotation to press down the single finished product 4 to keep the paper from loosening during the conveying process and make the conveying more stable.

[0029] The vibrating paper receiving table 95 can be a vibrating paper receiving table with three-level vibration reduction and automatic lifting function developed by our company (utility model patent number: 2020217053187). The table panel of the vibrating paper receiving table 95 is behind the stacking conveyor 90 and lower than the belt surface of the flat belt group 91, and is tilted backward so that the conveyed single finished product 4 can fall on the table panel, and the single finished product 4 is stacked neatly one by one through high-frequency vibration.

[0030] As attached Figure 4 As shown, the control system 99 includes a controller 991, a touch screen 992, an encoder 993 mounted on the end of the bottom cutter roller 71, and a servo motor 994 mounted on the end of the loading roller 73. The controller 991 is electrically connected to the touch screen 992, the encoder 993, the servo motor 994, and the traction electromagnet 32.

[0031] The cutting method of the cutting device 70 in the above embodiment is as follows: the encoder 993 feeds back the rotation speed of the bottom blade roller 71 to the controller 991. The controller 991 calculates the linear speed of the paper based on the received rotation speed signal and the diameter of the bottom blade roller 71. Then, based on the length of the single finished product 4 preset on the touch screen 992 and the rotation diameter of the cutting blade 72 on the blade roller 73, it calculates the rotation speed of the blade roller 73. The controller feeds back and controls the servo motor 994 to drive the blade roller 73 to rotate at the obtained rotation speed, so that the cutting blade 72 cuts the paper into a single finished product 4 of the preset length by pressing it against the bottom blade roller 71 through rotational pressure. This method changes the traditional technical solution of using blade rollers of different diameters to control the cutting length, solves the trouble of changing the blade roller when changing the length specification, and can set the length arbitrarily within the range of 120mm to 500mm without being limited by the transmission gear. Moreover, the dimensional accuracy of the cutting length can reach 0.1mm, which meets and exceeds the requirement of product size deviation ±0.5mm.

[0032] The technical solution described in this patent uses common materials, is suitable for industrial production, and is feasible and practical.

Claims

1. A production equipment for single-copy multi-copy printing paper, characterized in that: It includes multiple sets of unwinding stations, a web guiding device, a marking device, an easy-tear line cutting device, a pressure locking device, a paper pressing and conveying device, a cutting device, a separating and conveying device, a stacking and conveying device, a vibrating paper receiving table, and a control system.

2. The production equipment for single-copy multi-sheet printing paper according to claim 1, characterized in that: The locking device includes a grooved bottom mold and a locking knife mounted on an upper die. The bottom mold and the die are each mounted on a drive shaft, and the locking knife has at least two pairs of evenly spaced V-shaped cutting edges.

3. The production equipment for single-sheet multi-part printing paper according to claim 2, characterized in that: The paper pressing and conveying device includes a rubber paper pressing roller pressed on the bottom knife roller of the cutting device, a lower support roller alternately installed in front of the rubber paper pressing roller, and an upper pressure roller with adjustable height.

4. The production equipment for single-sheet multi-part printing paper according to claim 3, characterized in that: The separating conveyor device includes a lower conveyor belt and an upper conveyor belt, which are installed in a staggered manner with their surfaces closely touching.

5. The production equipment for single-copy multi-sheet printing paper according to claim 4, characterized in that: The superimposed conveyor is connected to the separation conveyor and is lower than the separation conveyor, and its speed is lower than that of the separation conveyor. The superimposed conveyor includes a flat belt group consisting of two interconnected and angle-adjustable flat belt groups, and an auxiliary pressure roller on the flat belt group.

6. The production equipment for single-sheet multi-part printing paper according to claim 5, characterized in that: The control system includes a controller, a touch screen, an encoder installed at the end of the bottom cutter roller, and a servo motor installed at the end of the loading roller. The controller is electrically connected to the touch screen, the encoder, the servo motor, and the traction electromagnet.

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