deburring machine

Abstract

The application discloses a trimming machine and belongs to the technical field of paper container processing. The trimming machine comprises a rack, a paper feeding belt arranged on the rack and capable of feeding paper sheets, a line marking device, a trimming device, an indentation device, a glue applying device, a folding device and a pressing device arranged on the rack in sequence on a conveying path of the paper feeding belt. The paper sheets are first marked with lines by the line marking device, then thinned at the line marking position by the trimming device, indented at the thinned position by the indentation device, glued at the thinned position by the glue applying device, folded at the indented position by the folding device and pressed by the pressing device. The trimming machine can realize line marking, trimming, indentation, glue applying, folding and pressing of the paper sheets, and all the processes are automatically completed on one device, so that the trimming machine has the characteristics of compact structure and high efficiency.

Description

Technical Field

[0001] This invention belongs to the field of paper container processing technology, and specifically relates to an edge trimming machine. Background Technology

[0002] With the improvement of living standards, people's pace of life is getting faster and faster. With the popularity of offline catering stores, the demand for disposable tableware such as food boxes and beverage cups with convenient, hygienic and portable features has increased dramatically. Common beverage cups are generally disposable paper cups and plastic cups. Currently, the commonly known disposable paper cups generally consist of a cup body and a cup lid. The cup body is used to hold liquid beverages, and the matching cup lid is placed on the cup body at the mouth to prevent the beverage in the cup body from overflowing due to shaking. In the paper cup manufacturing process, the cup body generally needs to go through processing steps such as punching, gluing, and shaping.

[0003] In existing technologies, the paper sheets for forming paper cups are cut and used directly. The sealing performance of the cup body at the shoulder is poor, which easily causes leakage and no longer meets the requirements. Moreover, the existing production method has shortcomings such as complex process, many steps, need for multiple machines to cooperate to complete the production, large equipment investment, many failure points, low yield, low production efficiency, poor product quality stability, and high production cost.

[0004] US Patent Application No. 14344262 discloses a crease-forming machine. This invention includes a crease-forming mechanism for forming creases on a piece of paper; a folding mechanism for folding the paper along the creases; and a controller. The crease-forming mechanism includes a first crease unit and a second crease unit. The first crease unit includes a first protrusion opposite to the upper surface of the paper and a first concave block opposite to the lower surface of the paper, the first protrusion and the first concave block being movable toward each other to form a first crease. The second crease unit includes a second concave block and a second protrusion opposite to the lower surface of the sheet, the second concave block and the protrusion moving toward each other to form a second crease. This invention can be applied to the crease-forming of paper cups to improve the sealing of the closure. However, this invention still has room for improvement in the following technical problems: after the paper is creased, additional folding of the paper is required, resulting in slow production efficiency; when the paper is too thick, the crease is prone to slippage, reducing the yield. Summary of the Invention

[0005] The purpose of this invention is to provide a simple, efficient, high-yield, low-cost, and stable edge trimming machine.

[0006] The technical solution adopted by the present invention to achieve the above objectives is as follows:

[0007] The edge trimming machine includes a frame equipped with a paper feed belt. Along the paper transfer path, the frame is sequentially equipped with a marking device, an edge trimming device, a creasing device, a gluing device, a folding device, and a pressing device. The marking device marks the paper, the edge trimming device thins the outer edge of the marked line, the creasing device creasing the thinned area, the gluing device applying glue to the creasing area, the folding device folding the paper at the creasing position, and the pressing device pressing and bonding the folded paper. The paper is conveyed through each device sequentially via the paper feed belt. Upon reaching the operating station of each device, the paper is sequentially marked, trimmed, creasing, gluing, folded, and pressed. This allows the marking, trimming, and folding processes to be automatically completed on a single device, improving the sealing of the paper cup body at the joint, ensuring the final paper container does not leak, and improving production efficiency and product quality.

[0008] Preferably, the marking device includes a marking motor, with a marking blade fixed to the output end of the motor. The frame is equipped with a marking slide capable of moving the marking motor. The marking blade can mark a line on the paper with a depth half the width of the paper. After the marking blade marks the paper, it facilitates the positioning of the subsequent edge-trimming device when it performs the thinning action, improving efficiency. The already deep marking line makes it easier for the edge-trimming device to thin the paper outward at the marking line position, which helps to create a vertical end face at the marking line position after the paper is thinned, improving the fit between the paper end and the end face after folding, and thus improving product quality.

[0009] Preferably, the edge trimming device includes an edge trimming motor, with a milling cutter fixed to the output end of the motor. The frame is equipped with an edge trimming slide capable of moving the edge trimming motor. The milling cutter can mill the portion of the paper outside the etched line to the lowest surface of the etched line. Milling the paper to the lowest surface of the etched line reduces the thickness of the portion of the paper outside the etched line to half, which is beneficial for the formation of subsequent indentations, prevents indentation misalignment due to excessive paper thickness, and improves the yield rate. Furthermore, the thinned portion of the paper is easier for the folding device to fold, ensuring that the folded paper has no bulges, thus improving product quality.

[0010] Preferably, the creasing device includes a creasing slider, which is equipped with a creasing shaft that can be driven to rotate. The output end of the creasing shaft is provided with a creasing wheel. The creasing slider is connected to a creasing adjustment component for its lifting and lowering. The creasing wheel can press out creasing on the milled part of the paper for subsequent folding.

[0011] Preferably, the gluing device includes a gluing slider, on which a gluing shaft is mounted for rotation. A gluing wheel is fixed to the output end of the gluing shaft, and a glue box is fitted onto the gluing wheel. A gluing adjustment element is connected to the gluing slider for its movement. The gluing wheel can apply glue from the glue box to the outside of the indentation on the paper sheet. When the paper sheet is conveyed to the gluing wheel position by the feed belt, the gluing shaft rotates, driving the gluing wheel to rotate. Simultaneously, the gluing wheel extends into the glue box through the gluing adjustment element, allowing the curved edge of the gluing wheel to pick up glue. The gluing wheel is then moved by the adjustment element to apply glue to the upper surface of the paper sheet outside the indentation, facilitating adhesion after subsequent folding. The rotating gluing wheel, with its cylindrical curved surface, helps to evenly pick up glue. Furthermore, the gluing wheel can perform rolling gluing, reducing the possibility of excessive glue application in certain areas, lowering the scrap rate, avoiding glue waste, and saving costs.

[0012] Preferably, the folding device includes a folding base plate fixed to the frame. The folding base plate is provided with a lifting mold and a folding mold. The lifting mold has an inclined surface that can lift and bend the paper sheet, and the folding mold has a bending surface that can fold the bent paper sheet. The side edge of the paper sheet first passes through the inclined surface of the lifting mold, so that the paper sheet is bent into a vertical position at the indentation. The vertical part of the paper sheet then passes through the bending surface of the folding mold, so that the bent part is folded into a horizontal position for subsequent pressing and bonding.

[0013] Preferably, the pressing device includes symmetrically arranged wall panels, with multiple sets of upper and lower pressing shafts connected between the wall panels. The upper and lower pressing shafts are drivenly connected and rotate in opposite directions. Each pressing shaft is equipped with a pressing wheel, and the lower pressing shaft is connected to a transmission system. The adjacent pressing wheels cooperate to press and bond the folded portion of the paper sheet. The transmission system electrically rotates the lower pressing shaft, which drives the upper pressing shaft connected to it to rotate in the opposite direction, pressing and bonding the folded portion of the paper sheet while simultaneously conveying it backward.

[0014] Preferably, a pressing slider is installed at the end of the upper pressing shaft. The pressing slider is vertically slidable within the wall panel, and a pressing cylinder is provided at the top of the wall panel to control the raising and lowering of the pressing slider. When the paper is stuck between the upper and lower pressing shafts, the pressing cylinder can be controlled to lift the upper pressing shaft, so that the pressing rollers in the vertical position are moved away from the stuck paper, making it easier to remove the paper. This facilitates maintenance and also makes it easy to adjust the gap between the upper and lower pressing shafts to accommodate paper of different thicknesses, thus improving the applicability of the device.

[0015] The pressing device has a blocking mechanism at the paper output end. The blocking mechanism includes a blocking cylinder, the telescopic end of which is connected to a blocking plate. The blocking plate extends with multiple blocking strips for stacking paper sheets. The blocking strips have multiple stops in the pushing direction. The blocking cylinder is connected to a photoelectric sensor, which detects the height of the stacked paper sheets and controls the blocking cylinder. The blocking cylinder pushes out the blocking plate so that the blocking strips are below the paper output end. The upper and lower pressing shafts press together and output the paper sheets to the blocking strips for stacking. The stops restrict the paper sheets to prevent them from falling and maintain the neatness of the paper stack. When the stacked paper sheets reach the detection position of the photoelectric sensor, the photoelectric sensor controls the blocking cylinder to retract. The blocking strips lose their support for the paper stack, and the paper stack falls, achieving automatic collection and unloading. After the paper stack falls, the photoelectric sensor controls the blocking cylinder to extend again for subsequent paper sheet stacking.

[0016] This invention employs multiple automated and sequentially executed devices to process and fold paper edges, resulting in the following advantages: During the paper conveyor belt transport process, the paper edges are sequentially scribing, trimming, creasing, gluing, folding, and pressing, achieving a high degree of automation and a compact structure, thus improving production efficiency. The deep scribing before trimming improves flatness during thinning and creates a vertical end face, enhancing the accuracy of subsequent folding and pressing, and improving finished product quality. The milling cutter thins the paper to half its original thickness, improving the flatness of the folded paper, enhancing product quality and sealing. The gluing device uses a rolling gluing wheel for glue application and adhesion, improving gluing uniformity, reducing scrap rate, avoiding glue waste, and saving costs. The pressing device uses adjustable upper and lower pressing shafts, facilitating maintenance and expanding the device's applicability. Therefore, this invention is a simple, efficient, high-yield, low-cost, and stable edge trimming machine. Attached Figure Description

[0017] Figure 1 This is a top view of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the marking device.

[0019] Figure 3 This is a schematic diagram of the edge trimming device.

[0020] Figure 4 This is a schematic diagram of the indentation device.

[0021] Figure 5 This is a schematic diagram of the adhesive application device.

[0022] Figure 6 This is a schematic diagram of the folding device structure;

[0023] Figure 7 This is a schematic diagram of the clamping device.

[0024] Figure 8 This is a schematic diagram showing the connection between the limiting block and the elastic gasket.

[0025] Figure 9 This is a schematic diagram showing the connection between the limit block and the spring.

[0026] Reference numerals in the attached figures: 1. Marking device; 10. Marking motor; 11. Marking cutter; 12. Marking slide; 2. Edge trimming device; 20. Edge trimming motor; 21. Milling cutter; 22. Edge trimming slide; 3. Indentation device; 30. Indentation slider; 31. Indentation wheel; 32. Indentation slide; 33. Adjusting seat; 34. Adjusting screw; 35. Indentation dial indicator; 36. Glue application device; 40. Glue application slider; 41. Glue application wheel; 42. Glue box; 43. Glue application top plate; 44. First adjusting screw; 45. Glue box slide; 46. Top block; 47. Glue box slider; 48. Second adjusting screw; 49. Screw; 5. Folding device; 50. Folding base plate; 51. Lifting mold; 52. Folding mold; 53. Slope; 54. Toothed pattern; 6. Pressing device; 60. Wall panel; 61. Pressing upper shaft; 62. Pressing lower shaft; 63. Pressing wheel; 64. Pressing slider; 65. Pressing cylinder; 66. Transmission system; 7. Blocking mechanism; 70. Blocking cylinder; 71. Blocking plate; 72. Blocking bar; 73. Photoelectric eye; 74. Limiting component; 80. Limiting base plate; 81. Limiting block; 82. Through hole; 83. Guide groove; 84. Spring; 85. Extension plate; 86. Elastic gasket. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings:

[0028] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] See Figure 1 The edge trimming machine includes: a frame, a paper feed belt for conveying paper sheets, and a marking device 1, an edge trimming device 2, a creasing device 3, a gluing device 4, an edge folding device 5, and a pressing device 6 arranged sequentially on the paper sheet transfer path. After the marking device 1 marks the paper sheet, the edge trimming device 2 trims the outer side of the marked line, the creasing device 3 creasing the thinned part of the paper sheet, the gluing device 4 applying glue to the outer side of the creasing, the edge folding device 5 folding the paper sheet at the creasing position, and the pressing device 6 pressing and bonding the folded paper sheet.

[0030] Paper sheets are conveyed sequentially through various devices via a paper feeding belt. Upon reaching the operating station of each device, the paper sheets are sequentially marked, trimmed, crimped, glued, folded, and pressed. This allows the marking, trimming, and folding processes of the paper sheets to be completed automatically on one device, improving the sealing of the paper cup body at the joint edges, ensuring that the final paper container product will not leak, and improving product production efficiency and product quality.

[0031] See appendix Figure 2 The marking device 1 includes a marking motor 10, a marking blade 11 fixed at the output end of the marking motor 10, and a marking slide 12 on the frame that can move the marking motor 10. The marking blade 11 can mark a line on the paper with a depth of half the paper.

[0032] After the scribing blade 11 scribes the paper, it is beneficial for the subsequent thinning device 2 to position the paper during the thinning action, thus improving efficiency. The scribing with depth makes it easier for the thinning device 2 to thin the paper outward at the scribing position, which is beneficial for the paper to form a vertical end face at the scribing position after thinning, improving the fit between the paper and the end face after the end is folded, and thus improving product quality.

[0033] See appendix Figure 3 The edge trimming device 2 includes an edge trimming motor 20, with a milling cutter 21 fixed at the output end of the edge trimming motor 20. The frame is equipped with an edge trimming slide 22 that can move the edge trimming motor 20. The milling cutter 21 can mill the part of the paper located outside the etched line to the lowest surface of the etched line. The milling cutter 21 grinds the paper to the lowest surface of the etched line, reducing the thickness of the paper outside the etched line to half. This is beneficial for the formation of subsequent indentations, prevents the indentation from shifting due to excessive paper thickness, and improves the yield. Furthermore, the thinned part of the paper is easier to fold by the folding device 5, ensuring that there are no bulges after folding, thus improving product quality.

[0034] See appendix Figure 4 The creasing device 3 includes a creasing slider 30, which is equipped with a creasing shaft 31 that can drive rotation. The output end of the creasing shaft 31 is provided with a creasing wheel 32. The creasing slider 30 is connected to a creasing adjustment component for its lifting and lowering. The creasing wheel 32 can press out creasing on the milled part of the paper for subsequent folding.

[0035] The indentation adjustment component includes an indentation slide 33 fixed to the frame, an indentation slider 30 slidably disposed within the indentation slide 33, an adjustment seat 34 fixed to the top of the indentation slide 33, an adjustment screw 35 vertically arranged inside the adjustment seat 34, the adjustment screw 35 passing through the adjustment seat 34 and connected to the indentation slider 30, and an indentation dial indicator 36 also disposed on the adjustment seat 34, the pressure probe of the indentation dial indicator 36 being arranged downward and in contact with the upper end of the adjustment seat 34.

[0036] The height position of the indentation slider 30 within the indentation slide block 33 can be changed by rotating the adjusting screw 35, and the accuracy of the height adjustment can be detected by the pressure value detected by the indentation dial indicator 36.

[0037] The creasing shaft 31 drives the creasing wheel 32 to rotate. After the height of the creasing wheel 32 is adjusted by the adjusting screw 35, the height is further precisely adjusted by the creasing dial indicator 36. When the paper is conveyed to the creasing wheel 32 by the paper feeding belt, the thinned part of the paper is pressed into a concave mark by the creasing wheel 32.

[0038] See appendix Figure 5 The glue application device 4 includes a glue application slider 40, which is equipped with a glue application shaft 41 that can drive it to rotate. A glue application wheel 42 is fixed at the output end of the glue application shaft 41. A glue box 43 is provided in cooperation with the glue application wheel 42. The glue application slider 40 is connected to a glue application adjustment component for its movement. The glue application wheel 42 can apply the glue from the glue box 43 to the outside of the indentation on the paper.

[0039] The glue application adjusting component includes a glue application top plate 44 fixed to the frame, which is positioned above the glue application slider 48. A vertically arranged first adjusting screw 45 is installed inside the glue application top plate 44, passing through the glue application top plate 44 and connected to the glue application slider 40. The glue application adjusting component also includes a glue box slide 46 and a top block 47 fixed to the frame. The glue box slide 46 and the top block 47 are arranged horizontally at intervals. A glue application slider is slidably connected inside the glue box slide 46. A horizontally arranged second adjusting screw 49 is installed inside the top block 47, passing through the top block 47 and connected to the glue box slider 48. The glue box slider 48 is fixed to the bottom of the glue box 43. The height of the glue application wheel 42 can be adjusted by rotating the first adjusting screw 45, and the distance between the glue box 43 and the glue application wheel 42 can be adjusted by rotating the second adjusting screw 49.

[0040] When the paper sheet is conveyed to the glue-applying roller 42 by the paper feed belt, the glue-applying shaft 41 rotates, driving the glue-applying roller 42 to rotate. At the same time, the glue-applying roller 42 extends into the glue box 43 through the glue-applying adjustment component, so that the curved surface of the edge of the glue-applying roller 42 picks up the glue. Then, the glue-applying roller 42 is moved by the glue-applying adjustment component to apply glue to the upper surface of the paper sheet outside the indentation, so as to facilitate the bonding of the paper sheet after subsequent folding. The rotating glue-applying roller 42, through its cylindrical curved surface, helps to evenly pick up the glue. At the same time, the glue-applying roller 42 can achieve rolling glue application, reducing the possibility of excessive glue application in some areas, reducing the scrap rate, and also avoiding glue waste and saving costs.

[0041] See appendix Figure 6The folding device 5 includes a folding base plate 50 fixed to the frame. The folding base plate 50 is equipped with a lifting mold 51 and a folding mold 52. The lifting mold 51 has an inclined surface capable of lifting and bending the paper sheet, and the folding mold 52 has a bending surface capable of folding the bent paper sheet. The side edge of the paper sheet first passes through the inclined surface of the lifting mold 51, causing the paper sheet to bend into a vertical position at the indentation. The vertically oriented portion of the paper sheet then passes through the bending surface of the folding mold 52, causing the bent portion to be folded into a horizontal position for subsequent pressing and bonding.

[0042] The folded bottom plate 50 has a slope 53 on the side end face that is closest to the paper. The slope 53 extends downward and has toothed patterns 54. The extension direction of the toothed patterns 54 is perpendicular to the slope 53.

[0043] The ramp 53 helps guide the paper upwards to the inclined edge of the raised mold 51, preventing the paper from being blocked by the vertical end face of the folding base plate 50 and thus preventing it from being folded. When the paper is pressed too deeply by the creasing wheel 32, the toothed grooves 54 on the ramp 53 can engage with the creasing, causing the defective product to stay at the leading edge of the ramp 53. This not only intercepts the defective product, but also allows subsequent paper to pass smoothly over the top of the defective paper without affecting overall efficiency and reducing the scrap rate. When qualified paper passes through the toothed grooves 54 normally, the toothed grooves 54 can scrape off the dust or small particles adhering to the bottom of the paper, preventing the paper from jumping up and forming defective products when it is bent and folded, further improving the yield and product quality.

[0044] See appendix Figure 7 The pressing device 6 includes symmetrically arranged wall panels 60. Multiple sets of upper pressing shafts 61 and lower pressing shafts 62 are connected between the wall panels 60. The upper pressing shafts 61 and lower pressing shafts 62 are connected to each other and rotate in opposite directions. The upper pressing shafts 61 and lower pressing shafts 62 are respectively provided with pressing wheels 63. The lower pressing shaft 62 is connected to a transmission system 66. The upper and lower adjacent pressing wheels 63 are configured to press and stick the folded parts of the paper.

[0045] The transmission system 66 includes a drive shaft with a sprocket mounted on it. The sprocket is connected to a drive motor. A synchronous pulley is mounted at the end of the lower pressing shaft 62. A synchronous belt connects the drive shaft to multiple synchronous pulleys. Multiple tensioning pulleys for tensioning the synchronous belt are provided on the outer side of the wall panel 60. An upper gear is mounted on the upper pressing shaft 61, and a lower gear is mounted on the lower pressing shaft 62. The upper and lower gears in the same group are arranged in a vertical position and are engaged. The drive motor drives the sprocket to rotate the drive shaft. The drive shaft drives the synchronous pulley to rotate the lower pressing shaft 62 via the synchronous belt. The lower pressing shaft 62 drives the upper gear to rotate the upper pressing shaft 61 in the opposite direction via the lower gear, thus achieving the pressing, bonding, and outward conveying of the paper sheet.

[0046] The transmission system 66 electrically presses the lower shaft 62, which rotates. The rotation of the lower shaft 62 drives the upper shaft 61, which is connected to it, to rotate in the opposite direction, pressing and bonding the folded part of the paper while conveying it backward.

[0047] A pressing slider 64 is installed at the end of the pressing upper shaft 61. The pressing slider 64 is vertically slidably disposed within the wall plate 60. A pressing cylinder 65 is provided at the top of the wall plate 60 to control the lifting and lowering of the pressing slider 64. When the paper is stuck between the pressing upper shaft 61 and the pressing lower shaft 62, the pressing upper shaft 61 can be lifted by controlling the pressing cylinder 65, so that the pressing roller 63, which is in a vertical position, is moved away from the stuck paper, making it easier to remove the paper. This facilitates maintenance and also makes it easier to adjust the gap between the pressing upper shaft 61 and the pressing lower shaft 62, so as to accommodate paper of different thicknesses and improve the applicability of the device.

[0048] The pressing device 6 is provided with a blocking mechanism 7 at the paper output end. The blocking mechanism 7 includes a blocking cylinder 70. The telescopic end of the blocking cylinder 70 is connected to a blocking plate 71. The blocking plate 71 extends with multiple blocking strips 72 for stacking paper sheets. The blocking strips 72 are provided with multiple stops 73 in the pushing direction. The blocking cylinder 70 is connected to a photoelectric eye 74. The photoelectric eye 74 detects the height of the stacked paper sheets and controls the blocking cylinder 70.

[0049] The blocking cylinder 70 pushes out the blocking plate 71, so that the blocking bar 72 is located below the paper output end. The upper shaft 61 and the lower shaft 62 are pressed together and the paper is output to the blocking bar 72 for stacking. The stop bar 73 restricts the paper to prevent it from falling and keeps the paper stack neat. When the height of the paper stack reaches the detection position of the photoelectric eye 74, the photoelectric eye 74 controls the blocking cylinder 70 to retract. The blocking bar 72 loses its support for the paper stack, and the paper stack falls to achieve automatic collection and feeding. After the paper stack falls, the photoelectric eye 74 controls the blocking cylinder 70 to extend again to stack subsequent paper sheets.

[0050] See appendix Figure 8 - Appendix Figure 9 The glue box 43 is symmetrically provided with limiting components 8 for applying glue to the glue application wheel 42. The limiting components 8 include a limiting base plate 80 fixed to the end face of the opening of the glue box 43. Limiting blocks 81 are arranged in an array on the limiting base plate 80. There are gaps between the limiting blocks 81 and one side is in contact with the glue application wheel 42. The limiting blocks 81 have through holes 82, which are perpendicular to the end face of the glue application wheel 42. The limiting blocks 81 have guide grooves 83 on the side that is in contact with the end face of the glue application wheel 42. The guide grooves 83 are oriented away from the direction of the glue box 43 and are connected to the through holes 82.

[0051] A spring 84 is connected between the limiting base plate 80 and any limiting block 81. An extension plate 85 is fixed to the limiting base plate 80. The extension plate 85 is located on the side of the limiting block 81 away from the glue-applying wheel 42. An elastic gasket 86 is connected between the extension plate 85 and any limiting block 81 at their near end faces.

[0052] The elastic pad 86 and spring 84 are used to make the limiting block 81 elastically contact the side end face of the coating wheel 42. Without causing wear to the coating wheel 42, multiple limiting blocks 81 can limit the coating wheel 42 to improve its rotational stability, prevent the coating wheel 42 from tilting or jumping, causing glue to be applied to other parts of the paper, and reduce the scrap rate. The multiple limiting blocks 81 can accommodate excess glue through the gaps between them, preventing glue from concentrating on the coating wheel 42 and flowing down, thus reducing the cost of use. In addition, multiple limiting blocks 81 can scrape off the glue adhering to the coating wheel 42 when it returns to the glue box 43, preventing the solidified glue from affecting the uniformity of the next coating, improving product quality and the stability of the manufactured product. The scraped glue can enter the through hole 82 for collection through the guide groove 83, reducing the maintenance frequency and reducing the manufacturing efficiency loss caused by maintenance. In addition, if a single limiting block 81 is stuck, only the single limiting block 81 needs to be replaced or removed without affecting the coating of the coating wheel 42, further reducing maintenance costs.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. Edge trimming machine, including: The frame is equipped with a paper feed belt for conveying paper sheets. Its features are as follows: the frame is provided with a marking device (1), an edge trimming device (2), a creasing device (3), a gluing device (4), a folding device (5), and a pressing device (6) in sequence on the paper transfer path. After the marking device (1) marks the paper, the edge trimming device (2) thins the outer side of the marked line, the creasing device (3) creasing the thinned part of the paper, the gluing device (4) applying glue to the outer side of the creasing, the folding device (5) folding the paper at the creasing position, and the pressing device (6) pressing and bonding the folded paper. The folding device (5) includes a folding base plate (50) fixed to the frame. The folding base plate (50) has a slope (53) on the side end face that is closest to the paper. The slope (53) extends downward and has toothed patterns (54) on the slope (53). The extension direction of the toothed patterns (54) is perpendicular to the slope (53). The glue application device (4) includes a glue application slider (40), which is equipped with a glue application shaft (41) that can drive rotation. A glue application wheel (42) is fixed at the output end of the glue application shaft (41). A glue box (43) is provided for the glue application wheel (42). The glue box (43) is symmetrically provided with limiting components (8) for applying glue to the glue application wheel (42). The limiting components (8) include a limiting base plate (80) fixed to the end face of the opening of the glue box (43). Limiting blocks (81) are arranged in an array on the base plate (80). There is a gap between the limiting blocks (81) and one side is in contact with the glue-applying wheel (42). The limiting blocks (81) have through holes (82) and the through holes (82) are arranged perpendicular to the end face of the glue-applying wheel (42). The limiting blocks (81) have guide grooves (83) on the side that is in contact with the end face of the glue-applying wheel (42). The guide grooves (83) are oriented away from the direction of the glue box (43) and are connected to the through holes (82). A spring (84) is connected between the limiting base plate (80) and any of the limiting blocks (81). An extension plate (85) is fixed to the limiting base plate (80). The extension plate (85) is located on the side of the limiting block (81) away from the glue-applying wheel (42). An elastic gasket (86) is connected between the extension plate (85) and any of the limiting blocks (81) at their near end faces.

2. The edge-trimming machine according to claim 1, characterized in that: The marking device (1) includes a marking motor (10), and a marking blade (11) is fixed at the output end of the marking motor (10). The frame is provided with a marking slide (12) that can move the marking motor (10). The marking blade (11) can mark a line on the paper with a depth of half that of the paper.

3. The edge-trimming machine according to claim 1, characterized in that: The edge trimming device (2) includes an edge trimming motor (20), and a milling cutter (21) is fixed at the output end of the edge trimming motor (20). The frame is provided with an edge trimming slide (22) that can push the edge trimming motor (20). The milling cutter (21) can mill the part of the paper located outside the etched line to the lowest surface of the etched line.

4. The edge-trimming machine according to claim 1, characterized in that: The creasing device (3) includes a creasing slider (30), which is equipped with a creasing shaft (31) that can drive rotation. The output end of the creasing shaft (31) is provided with a creasing wheel (32). The creasing slider (30) is connected to a creasing adjustment component for its lifting and lowering. The creasing wheel (32) can press out creasing on the milled part of the paper for subsequent folding.

5. The edge-trimming machine according to claim 1, characterized in that: The glue applicator (4) includes a glue applicator slider (40), which is equipped with a glue applicator shaft (41) that can drive rotation. A glue applicator wheel (42) is fixed at the output end of the glue applicator shaft (41). A glue box (43) is provided in cooperation with the glue applicator wheel (42). A glue applicator adjustment component for its movement is connected to the glue applicator slider (40). The glue applicator wheel (42) can apply the glue from the glue box (43) to the outside of the indentation on the paper.

6. The edge-trimming machine according to claim 1, characterized in that: The folding base plate (50) is provided with a lifting mold (51) and a folding mold (52). The lifting mold (51) has an inclined surface that can lift and bend the paper, and the folding mold (52) has a bending surface that can fold the bent paper.

7. The edge-trimming machine according to claim 1, characterized in that: The pressing device (6) includes symmetrically arranged wall panels (60). Multiple sets of upper pressing shafts (61) and lower pressing shafts (62) are connected between the wall panels (60). The upper pressing shafts (61) and the lower pressing shafts (62) are connected to each other and rotate in opposite directions. The upper pressing shafts (61) and the lower pressing shafts (62) are respectively provided with pressing wheels (63). The lower pressing shafts (62) are connected to a transmission system. The upper and lower adjacent pressing wheels (63) are configured to press and stick the folded parts of the paper.

8. The edge-trimming machine according to claim 7, characterized in that: The end of the pressing upper shaft (61) is equipped with a pressing slider (64), which is vertically slidably disposed in the wall plate (60). The top of the wall plate (60) is provided with a pressing cylinder (65) for controlling the lifting and lowering of the pressing slider (64).

9. The edge-trimming machine according to claim 7, characterized in that: The pressing device (6) is provided with a blocking mechanism (7) at the paper output end. The blocking mechanism includes a blocking cylinder (70). The telescopic end of the blocking cylinder (70) is connected to a blocking plate (71). The blocking plate (71) extends with multiple blocking strips (72) for stacking the paper. The blocking strips (72) are provided with multiple stops (73) in the pushing direction. The blocking cylinder (70) is connected to a photoelectric eye (74). The photoelectric eye (74) detects the height of the stacked paper and controls the blocking cylinder (70).

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