High-precision cutting method for book printing paper

Abstract

The invention discloses a high-precision cutting method for book printing paper, and relates to the technical field of book processing. The high-precision cutting method for the book printing paper comprises the following steps that firstly, the position, where a book adhesive binding part should be placed on a cutting table of a paper cutter, of the book adhesive binding part is obtained according to the size of a book; secondly, the position of a paper pressing device of the paper cutter in the horizontal direction is adjusted according to the position of the book on the cutting table, and the paper pressing device is made to keep away from an adhesive binding part of the book; 3, controlling the paper pressing device to move downwards according to the horizontal position of the paper pressing device in the step 2 and pressing the book downwards; fourthly, a cutting knife of the paper cutter is controlled to obliquely and downwards cut the book from the side close to the book cementing side. According to the high-precision cutting method for the book printing paper, the paper pressing device capable of avoiding the adhesive binding part is used for pressing the book downwards, so that the phenomenon that the adhesive binding part is damaged due to the fact that the paper pressing device is directly pressed on the adhesive binding part is avoided, an operator does not need to use a cushion block, and the cutting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of book processing, in particular to a high-precision cutting method for book printing paper. Background Art

[0002] When printing books, newspapers and other products, different types of paper are needed as raw materials. In order to ensure the appearance of the printed page, the consistency of each finished product and the standard layout, the paper needs to be cut, and a paper cutter is needed to cut the paper. When using the glue binding process to make books, the three non-glue binding edges of the book need to be cut after the glue binding is completed to ensure the neat appearance of the book.

[0003] For example, refer to Figure 1 , the book is divided into a binding side 110 and a non-binding side 120, the binding side 110 has a binding portion 111, and after binding, two convex glues 112 are often formed at both ends of the binding portion 111, such as Figure 1 Status shown.

[0004] In cutting Figure 1 When the book shown in the figure is cut, the book is generally placed directly under the cutter of the book cutting machine, and the cutter is in a state of cutting downwardly. When cutting, it should be noted that the binding side 110 of the book should be close to the cutting side of the cutter, for example, referring to Figure 2 , the cutting direction of the cutting knife 10 is from the upper left corner to the lower right corner, and the binding side 110 of the book should be located on the left side, so as to avoid the edge bursting phenomenon of the book after cutting.

[0005] In the prior art, a paper presser is required to press the book before the book is cut by the cutting knife, so as to avoid the book from tilting during the cutting process. However, the paper presser in the prior art is a flat structure, which will also generate a pressure on the glue-bound side 110 of the book when pressing down. This pressure will cause a certain pressure loss on the glue-bound part 111, resulting in a decrease in the gluing performance. In addition, since the overall thickness of the glue-bound part 111 is slightly greater than that of the non-glue-bound side 120, when the paper presser is pressed on the glue-bound part 111, it will also cause an unbalanced pressure on the non-glue-bound side 120, affecting the cutting accuracy. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a high-precision cutting method for book printing paper, which solves the problem in the prior art that the downward pressure of the paper presser will generate pressure on the binding part and affect the cutting accuracy.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for high-precision cutting of book printing paper, comprising the following steps: Step 1: Obtain the position where the book binding unit should be placed on the cutting table of the paper trimmer according to the book size; Step 2: Adjust the horizontal position of the paper press of the paper cutter according to the position of the book on the cutting table, so that the paper press avoids the binding part of the book; Step 3: Control the paper press to move downward and press down the book based on the horizontal position of the paper press in step 2; Step 4: Control the cutting knife of the paper trimmer to cut the book downwards from the side close to the binding side of the book.

[0008] Furthermore, a gantry is provided above the cutting table, and the cutting knife is installed below the gantry; the paper cutter also includes a tooth portion 1, which is located on the side of the upper surface of the cutting table close to the book binding side behind the tooth portion 1, and there is a gap 1 between two adjacent tooth portions 1; the tooth portion 1 is used to block the book and limit the cutting size of the book, and the gap 1 is used to avoid the convex glue at the end of the book binding side.

[0009] Furthermore, the paper press comprises a pressing bar, and an escape groove is provided on the pressing bar. The position of the escape groove is opposite to the position of the gap 1, and is used to escape the binding part of the book.

[0010] Further, the beading strip is a rectangular beading strip, and each outer surface of the rectangular beading strip is provided with an avoidance groove 1, four avoidance grooves 1 are evenly arranged in the length direction of one half of the rectangular beading strip, one avoidance groove 1 corresponds to one gap 1, and the avoidance groove 1 is used to avoid the book binding part; The utility model also comprises a flipping motor, which is arranged on the gantry and is used for driving the rectangular pressure strip to rotate so that the avoidance grooves at different positions on the rectangular pressure strip can all face downwards to the binding part of the book.

[0011] Further, the beading includes two groups of rectangular beadings arranged side by side up and down, each of the rectangular beadings has four outer surfaces, and each outer surface of the rectangular beading is provided with an avoidance groove 1, wherein the avoidance groove 1 on one rectangular beading is distributed on the first quarter section of the rectangular beading, and the avoidance groove 1 on the other rectangular beading is distributed on the second quarter section of the rectangular beading, and one avoidance groove 1 corresponds to one gap 1; Both ends of the two rectangular beadings are provided with a first bearing seat, and a flip motor for independently controlling the rotation of the two rectangular beadings is provided in the first bearing seat; A second bearing seat is provided on a side of the first bearing seat away from the rectangular pressure strip, and a revolving motor is provided in the second bearing seat for adjusting the relative positions of the two rectangular pressure strips.

[0012] Furthermore, the pressure strip is a cylindrical pressure strip, and the outer surface of the cylindrical pressure strip is spirally arranged with avoidance grooves three, a single avoidance groove three is an arc structure, and there is no axial overlapping area between two adjacent avoidance grooves three, and the flip motor is used to drive the cylindrical pressure strip to rotate so that different avoidance grooves three can face the binding part of the book.

[0013] Furthermore, the pressure strip includes a carrier two, a slide and a telescopic bolt. A pressure platform is provided at the bottom of the side of the carrier two away from the book binding side, and a tooth portion two is provided at the bottom of the other side of the carrier two. An avoidance groove two is formed between two adjacent tooth portions two. The slide is located in the avoidance groove two. The telescopic bolt is threadedly connected to the carrier two in a vertical direction, and the lower end of the telescopic bolt is rotatably connected to the slide; after the slide is lowered, the lower surface of the slide is flush with the lower surface of the tooth portion two.

[0014] Furthermore, both sides of the lower end of the second tooth portion are provided with side protrusions, and both sides below the slide are adapted to the side protrusions.

[0015] Furthermore, an infrared emitter is provided in the gap 1, and the infrared emitter is used to emit infrared rays; the binding side of the book obtained in step 1 is located on the path of infrared rays emitted by any infrared emitter.

[0016] Furthermore, the cutting knife is installed on a knife holder, and inclined grooves are provided on both sides of the knife holder. A fixed guide rod is provided in the area opposite to the inclined groove on the gantry. A reciprocating assembly for pushing and pulling the knife holder is provided on one side of the cutting table, so that the fixed guide rod and the inclined groove move relative to each other, forming a state where the cutting knife is in an inclined cutting state.

[0017] The present invention has the following beneficial effects: (1) This method for high-precision cutting of printed book paper uses a paper presser that avoids the binding section to press down the book, thereby avoiding the phenomenon that the binding section is damaged by the paper presser directly pressing on the binding section. The pressure is also more balanced, which can improve the cutting efficiency.

[0018] (2) In the method for high-precision cutting of printed paper for books, an infrared emitter is arranged on the rear baffle, and the light emitted by the infrared emitter is consistent with the position of the gap 1 and the position of the avoidance groove on the rear baffle, so that the operator can directly place the glue binding part of the book on any light to achieve the avoidance of the glue binding part and the avoidance of the convex glue.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a book to be cut in the prior art; Figure 2 A diagram showing the cutting direction of a book by a cutting knife in the prior art; Figure 3 is a process flow chart of the present invention; Figure 4 This is a front view of the paper cutter of the present invention; Figure 5 This is a rear perspective view of the paper cutter of the present invention; Figure 6 This is an assembly diagram of a rectangular layering strip in Embodiment 1 of the present invention; Figure 7 For the present invention Figure 5 The state diagram of placing books in the middle; Figure 8 It is a structural schematic diagram of the rear baffle of the present invention; Fig. 9 It is a position diagram of the light emitted by the infrared emitter near the center line area of ​​the cutting table of the present invention; Fig.10 A diagram showing the position of light emitted by an infrared emitter near the outer area of ​​the cutting table of the present invention; Fig.11 This is a schematic diagram of the structure of a rectangular layering strip in Embodiment 1 of the present invention; Fig.12 This is an appearance diagram of the reciprocating assembly of the present invention; Fig.13 It is a structural diagram of the reciprocating assembly of the present invention from a first perspective; Fig.14 A second perspective structural diagram of the reciprocating assembly of the present invention; Fig.15 This is a state diagram of the book binding part being located below the first avoidance groove in the first embodiment of the present invention; Fig.16 This is a state diagram of the book binding part being located below the second avoidance groove 1 in the first embodiment of the present invention; Fig.17 This is a schematic diagram of the structure of a rectangular layering strip in Embodiment 2 of the present invention; Fig.18 This is a state diagram of one of the rectangular pressing strips pressing on a book in the second embodiment of the present invention; Fig.19 This is a diagram showing the relative positions of the cylindrical molding and the rear baffle in the third embodiment of the present invention; Fig. 20 This is a schematic diagram of the structure of a cylindrical layering strip in Embodiment 3 of the present invention; Fig.21 A diagram showing the relative positions of the avoidance groove 3 and the binding portion when the cylindrical pressing strip is pressed on the book in the third embodiment of the present invention; Fig. 22 for Fig.21 Schematic diagram of the middle cylindrical pressure strip pressing on the non-binding area of ​​the book; Fig.23 is a perspective view of a cylindrical layering strip of the present invention; Fig.24 It is an assembly diagram of a paper press in accordance with the fourth embodiment of the present invention; Fig.25The relative position diagram of the paper press and the rear baffle in the fourth embodiment of the present invention; Fig.26 for Fig.25 A magnified view of area A in; Fig. 27 This is a state diagram of the paper presser pressing down a book in the fourth embodiment of the present invention.

[0021] In the figure, 1, gantry; 2, cutting table; 3, rear baffle; 31, carrier 1; 32, solid area; 33, tooth part 1; 34, gap 1; 41, carrier 2; 42, press table; 43, tooth part 2; 431, side convex part; 44, slide; 45, telescopic bolt; 46, avoidance groove 2; 5, rectangular pressure strip; 51, avoidance groove 1; 52, rotating shaft 1; 6, flip motor; 7, cylindrical pressure strip; 71, avoidance groove 3; 8, first bearing seat; 9, second bearing seat; 10, cutting knife ; 11. Tool holder; 12. Third bearing seat; 13. Infrared transmitter; 14. Reciprocating assembly; 141. Cutting motor; 142. Belt drive structure; 143. Transmission shaft; 144. Active umbrella wheel; 145. Driven umbrella wheel; 146. First connecting rod; 147. Second connecting rod; 15. Press frame; 16. Pressure cylinder; 17. Inclined groove; 18. Fixed guide rod; 110. Glue binding side; 111. Glue binding part; 112. Convex rubber; 120. Non-glue binding side; 19. Infrared. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0024] According to the following Figure 1-Figure 27 The invention describes a method for high-precision cutting of book printing paper provided by an embodiment of the invention.

[0025] Embodiment 1: See also Figure 3 The embodiment of the present invention provides a method for high-precision cutting of book printing paper, comprising the following steps: Step 1: Obtaining the position where the book binding unit 111 should be placed on the cutting table 2 of the paper trimmer according to the book size; Step 2: adjusting the horizontal position of the paper press of the paper cutter according to the position of the book on the cutting table 2 so that the paper press avoids the binding portion 111 of the book; Step 3: Control the paper press to move downward and press down the book based on the horizontal position of the paper press in step 2; Step 4: Control the cutting blade 10 of the paper trimmer to cut the book in an inclined downward direction from the side close to the binding portion 111 of the book.

[0026] The high-precision cutting method for book printing paper provided by the embodiment of the present invention uses a paper presser that can avoid the binding part 111 to press down the book, thereby avoiding the damage of the binding part 111 caused by the paper presser directly pressing on the binding part 111, thereby improving the cutting accuracy.

[0027] Combination Figure 4 , Figure 5 , Fig.12 and Fig.13 As shown, specifically, the above-mentioned paper cutter also includes a gantry 1, which is located above the cutting table 2. A knife holder 11 is also arranged on the gantry 1, and a cutting knife 10 is mounted on the knife holder 11. Bevel grooves 17 are provided on both sides of the knife holder 11. A fixed guide rod 18 is provided in the area opposite to the bevel groove 17 on the gantry 1. A reciprocating assembly 14 for pushing and pulling the knife holder 11 is provided on one side of the cutting table 2. When the reciprocating assembly 14 is working, the fixed guide rod 18 and the bevel groove 17 are moved relative to each other, thereby forming a state where the cutting knife 10 is inclined for cutting.

[0028] Combination Figure 5 and Figure 6 As shown, in order to adjust the cutting size of the book by the cutting knife 10 before cutting, the above-mentioned paper trimmer also includes a rear baffle 3. When the book to be cut is placed on the upper surface of the cutting table 2, the rear baffle 3 is used to block the rear end of the book. The rear baffle 3 can move in the front and rear directions to adjust the distance between itself and the cutting knife 10. The closer it is to the cutting knife 10, the further it pushes the book forward, and the larger the size of the waste material cut from the book.

[0029] Regarding the power for the rear baffle 3 to move forward and backward, it can be various ways such as cylinder drive, electric telescopic rod drive, etc. Since this is a well-known technology in the prior art and is not the focus of the invention of this application, it will not be described here.

[0030] Specific, combined Figure 7 and Figure 8As shown, the rear baffle 3 includes a carrier 31 spanning the cutting table 2, a solid area 32 is arranged on the front side of the carrier 31 close to the non-binding side 120, a tooth portion 33 is arranged on the front side of the carrier 31 close to the binding side 110, and a gap 34 is provided between two adjacent tooth portions 33; the tooth portion 33 and the solid area 32 are used to block the book and limit the cutting size of the book, and the gap 34 is used to avoid the convex glue 112 at the end of the binding portion 111 of the book to prevent the convex glue 112 from being blocked by the tooth portion 33, resulting in the book being tilted as a whole.

[0031] Preferably, the boundary area between the solid area 32 and the tooth portion 33 should be located in the central area of ​​the carrier 31 and on the midline of the cutting table 2, so that books of various sizes can find the position where their glue binding part 111 and convex glue 112 can be placed on the cutting table 2 close to the tooth portion 33.

[0032] Furthermore, in order to facilitate the operator to know the position of each gap 34 when standing in front of the gantry 1, an infrared transmitter 13 is provided in the gap 34, and the infrared transmitter 13 is used to transmit infrared rays. The book binding part 111 obtained in step 1 is located on the path of infrared rays emitted by any infrared transmitter 13, and the infrared rays can be transmitted to the front of the gantry 1. Figure 4 The mid-infrared ray 19 is the light emitted by the infrared emitter 13 in one of the gaps 34. When the staff stands in front of the gantry 1 to work, they can align the binding part 111 with the infrared ray 19 and directly push the book to the position of the rear baffle 3, so as to ensure that the convex glue 112 can align with the gap 34.

[0033] It should be noted that the operator can know the infrared ray 19 that should be aimed at according to the size of the book, for example Fig. 9 In the state shown, when the size of the book is small, the operator turns on the infrared transmitter 13 near the center of the cutting table 2, whereas when the size of the book is large, for example Fig.10 In the state shown, the operator turns on the infrared transmitter 13 near the edge area of ​​the cutting table 2.

[0034] The above-mentioned paper press includes a pressure strip, which has multiple outer surfaces, and each outer surface of the pressure strip is provided with an avoidance groove, and each avoidance groove does not overlap in the axial direction of the pressure strip, and is in a staggered state. The position of each avoidance groove is opposite to the position of a different gap 34. The avoidance groove is used to avoid the book binding part 111, so as to avoid the pressure strip pressing the binding part 111 when pressing the book, thereby ensuring the binding stability of the binding part 111.

[0035] Preferably, a rubber pad having a buffering effect is wrapped on the outer surface of the pressure strip to prevent the pressure strip from causing indentations on the book.

[0036] like Figure 6 As shown, in order to ensure that the avoidance grooves in all directions can face downwardly the binding part 111, a flip motor 6 is also provided. The flip motor 6 is arranged on the gantry 1, and is used to drive the pressure strip to rotate, so that the avoidance grooves at different positions on the rectangular pressure strip 5 can face downwardly the binding part 111 of the book.

[0037] like Fig.11 As shown, preferably, the above-mentioned molding strip is a rectangular molding strip 5, which has four longer surfaces, and each outer surface of the rectangular molding strip 5 is provided with a avoidance groove 51, and a total of four avoidance grooves 51 are provided. The four avoidance grooves 51 are evenly arranged in the length direction of one half of the rectangular molding strip 5, and one avoidance groove 51 corresponds to a gap 34, and the avoidance groove 51 is used to avoid the book binding part 111; and the above-mentioned installation of the infrared emitter 13 in the gap 34 should also have the infrared emitter 13 only in the gap 34 in the area opposite to the avoidance groove 51 (a total of four infrared emitters 13 in this embodiment), and the infrared emitter 13 is not installed in the remaining gaps 34.

[0038] It is worth mentioning that in this embodiment, when the operator is cutting the book, the binding portion 111 of the book has four alignment stations, that is, on the path of the light emitted by the four infrared emitters 13 in the embodiment. When the binding portion 111 of the book is aligned with any one of the light rays, the convex glue 112 of the book is located in the gap 34, and the binding portion 111 is also in a position aligned with the avoidance groove 51, thereby improving the operating efficiency.

[0039] In addition, a rotating shaft 52 is provided at both ends of the rectangular bead 5, and a third bearing seat 12 is provided on the rotating shaft 52. When the flip motor 6 is working, one of the rotating shafts 52 can be driven to rotate, thereby realizing the flipping of the rectangular bead 5 ( Fig.15 and Fig.16 For different avoidance slots 51 facing the state diagram of the book, Fig.15 The rectangular layer 5 in the middle is turned 90° to form Fig.16 status shown).

[0040] like Figure 6 As shown, the above-mentioned flip motor 6 is installed inside the third bearing seat 12, and a pressure frame 15 is arranged below the cutting table 2. The upper end of the pressure frame 15 is fixed to the third bearing seat 12, and a pressure cylinder 16 for driving the pressure frame 15 to rise and fall is also arranged below the cutting table 2, thereby realizing the downward pressure and pressure release of the rectangular pressure strip 5; preferably, the third bearing seat 12 is equipped with an upper and lower guiding slide rail on the gantry 1 to ensure the vertical downward pressure of the rectangular pressure strip 5.

[0041] Combination Figure 12-14As shown, the reciprocating assembly 14 of the cutting knife 10 mentioned above includes a second connecting rod 147 hinged on one side of the knife holder 11, and a first connecting rod 146 is hinged on the other end of the second connecting rod 147. A cutting motor 141 is assembled below the cutting table 2, and a transmission shaft 143 is arranged on the gantry 1. A belt transmission structure 142 is arranged between the transmission shaft 143 and the cutting motor 141. An active umbrella wheel 144 is also arranged on the transmission shaft 143, and a side of the active umbrella wheel 144 close to the first connecting rod 146 engages with a driven umbrella wheel 145. When the driven umbrella wheel 145 rotates, the first connecting rod 146 and the second connecting rod 147 cooperate to enable the knife holder 11 to move back and forth, thereby realizing inclined cutting of the cutting knife 10.

[0042] When in use (working), the position where the book binding unit 111 should be placed on the cutting table 2 of the paper cutter is obtained according to the size of the batch of books to be cut. For example, if the book is large, the width of the cutting table 2 occupied by it is large, so the gap 34 and the avoidance groove 51 corresponding to the convex glue 112 and the binding unit 111 should be close to the edge area of ​​the cutting table 2, so it can be located Fig.15 In the state shown, the leftmost avoidance groove 51 is in position, and the operator should open it before cutting. Fig.15 The infrared transmitter 13 is opposite to the leftmost avoidance groove 51, and the flip motor 6 is controlled to form a rectangular layer 5 Fig.15 The state shown (the state where the leftmost avoidance groove 51 is downward), and then the staff adjusts the width of the cut waste. After the above process is ready, the book can be placed on the cutting table 2. When placing, the operator should align the binding part 111 of the book with the light emitted by the infrared emitter 13, so that the convex glue 112 is aligned with the gap 34, and the binding part 111 is aligned with the avoidance groove 51. After the book is placed, the pressure cylinder 16 works to make the rectangular pressure strip 5 press down on the book. After the pressure is pressed down, the binding part 111 is in a avoided state, and then the reciprocating assembly 14 works to drive the cutting knife 10 to cut the non-binding side 120 of the book.

[0043] In fact, in addition to the non-binding side 120 adjacent to the binding portion 111, there are two other non-binding portions. After the non-binding side 120 is cut, the book is taken out and turned over, and the other non-binding side 120 adjacent to the binding portion 111 is cut. Finally, the book is rotated 90°, and the position of the rear baffle 3 is adjusted so that the last position of the book to be cut is aligned with the cutting knife 10, and then the paper presser is used to press down, and then cutting can be performed.

[0044] Embodiment 2: Combination Fig.17 and Fig.18As shown, the difference between this embodiment and the first embodiment is that this embodiment is provided with two groups of rectangular beadings 5 ​​arranged side by side in an upper and lower manner, each rectangular beading 5 has four outer surfaces, and each outer surface of the rectangular beading 5 is provided with a avoidance groove 51, one avoidance groove 51 corresponds to one gap 34, and the avoidance grooves 51 on the upper and lower two rectangular beadings 5 ​​do not overlap, the avoidance grooves 51 on one rectangular beading 5 are distributed on the first quarter section of the rectangular beading 5, and the avoidance grooves 51 on the other rectangular beading 5 are distributed on the second quarter section of the rectangular beading 5, as shown in FIG. Fig.17 As shown, the upper four avoidance grooves 51 are located on the second quarter section, and the lower four avoidance grooves 51 are located on the first quarter section.

[0045] Preferably, both ends of the two rectangular beading strips 5 are provided with a first bearing seat 8, and a flip motor 6 is provided inside the first bearing seat 8 to independently control the rotation of the two rectangular beading strips 5, so that the two rectangular beading strips 5 can rotate independently and adjust the direction of the avoidance groove 51 on each. In addition, a second bearing seat 9 is provided on the side of the first bearing seat 8 away from the rectangular beading strip 5, and a revolving motor is provided inside the second bearing seat 9 to adjust the relative position of the two rectangular beading strips 5, so that different avoidance grooves 51 on different rectangular beading strips 5 can be aligned with the glue binding part 111.

[0046] This embodiment adopts two rectangular pressure strips 5 to form eight avoidance grooves 51, so that infrared transmitters 13 can be set in eight gaps 34, so that the placement positions of the book on the cutting table 2 can be eight. Compared with the four placement positions in Example 1, the operator has more freedom to place the book. When the cutting knife 10 cuts the book, there are eight selectable initial cutting positions, so that each position of the cutting knife 10 can be used as an effective cutting section, avoiding the situation where the cutting knife 10 is repeatedly used at several commonly used positions, resulting in severe local wear of the cutting knife 10.

[0047] Embodiment three: Combination Figure 19-Figure 23 As shown, the difference between this embodiment and the above two embodiments is that the pressure strip of the paper press in this embodiment is a cylindrical pressure strip 7, and a section of the outer surface of the cylindrical pressure strip 7 is spirally arranged with avoidance grooves 3 71, and a single avoidance groove 3 71 is an arc structure, and there is no axial overlapping area between two adjacent avoidance grooves 3 71, and the flip motor 6 is used to drive the cylindrical pressure strip 7 to rotate so that different avoidance grooves 3 71 can face the binding part 111 of the book.

[0048] In this embodiment, eight avoidance grooves 3 71 can be set by using a cylindrical pressure strip 7, so that the required avoidance grooves 3 71 can be adjusted to face downward directly by rotating the cylindrical pressure strip 7. Compared with the second embodiment in which a revolving motor is added to increase the number of placement locations, this embodiment has a simpler structure.

[0049] like Fig.21 As shown, when the cylindrical pressure strip 7 presses down the book, the binding portion 111 enters the avoidance groove 3 71 below. Fig. 22 for Fig.21 The cylindrical pressure strip 7 is pressed on the book in this state.

[0050] Embodiment 4: Combination Figure 24-Figure 27 As shown, the difference between this embodiment and the above three embodiments is that the paper press includes a second carrier 41, a slide 44 and a telescopic bolt 45. A pressing platform 42 is provided at the lower part of the side of the second carrier 41 away from the book binding side 110, and a tooth portion 43 is provided at the lower part of the other side of the second carrier 41. An avoidance groove 46 is formed between two adjacent tooth portions 43. The slide 44 is located in the avoidance groove 46. The telescopic bolt 45 is threadedly connected to the second carrier 41 in the vertical direction, and the lower end of the telescopic bolt 45 is rotatably connected to the slide 44. After the slide 44 is lowered, the lower surface of the slide 44 is flush with the lower surface of the tooth portion 43, so that when the paper press is pressed down, the book is pressed with the lower surfaces flush.

[0051] In this embodiment, rubber pads are provided on the lower surface of the slide 44, the lower surface of the second tooth portion 43, and the lower surface of the press table 42 to prevent indentation.

[0052] In this embodiment, when one of the telescopic bolts 45 is manually rotated, it can drive the slide table 44 below to rise, thereby exposing the second avoidance groove 46. At this time, the light emitted by the infrared transmitter 13 behind it can pass through the second avoidance groove 46. When operating, the operator directly aligns the binding part 111 of the book with the light and places it on the cutting table 2. At this time, the convex glue 112 of the book is aligned with the gap 1 34, and the binding part 111 is aligned with the upper avoidance groove 46. Therefore, after the paper presser is pressed down, the second avoidance groove 46 can also avoid the binding part 111.

[0053] Preferably, side protrusions 431 are provided on both sides of the lower end of the above-mentioned tooth portion 43, and the lower sides of the slide 44 are adapted to the side protrusions 431, so that when the telescopic bolt 45 is rotated, the side protrusions 431 can limit the slide 44 from moving downward excessively, so that the lower surface of the slide 44 remains flush with the lower surface of the tooth portion 43.

Claims

1. A high-precision cutting method for book printing paper, characterized in that: The following steps are involved: Step 1: Obtaining the position where the book binding unit (111) should be placed on the cutting table (2) of the paper trimmer according to the size of the book; Step 2: adjusting the horizontal position of the paper press of the paper cutter according to the position of the book on the cutting table (2) so that the paper press avoids the binding portion (111) of the book; Step 3: Control the paper press to move downward and press down the book based on the horizontal position of the paper press in step 2; Step 4: Control the cutting blade (10) of the paper cutter to cut the book in an inclined downward direction from the side close to the book binding side (110).

2. The high-precision cutting method for book printing paper according to claim 1, characterized in that: A gantry (1) is provided above the cutting table (2), and the cutting knife (10) is installed below the gantry (1); The paper cutter further comprises a tooth portion 1 (33), wherein the tooth portion 1 (33) is located at a side of the upper surface of the cutting table (2) close to the book binding side (110), and a gap 1 (34) is provided between two adjacent tooth portions 1 (33); The tooth portion 1 (33) is used to block the book and limit the cutting size of the book, and the gap 1 (34) is used to avoid the convex glue (112) at the end of the book binding side (110).

3. The high-precision cutting method for book printing paper according to claim 2, characterized in that: The paper press comprises a pressing strip, on which an escape groove is provided, the position of the escape groove being opposite to the position of the gap 1 (34) and being used to escape the binding portion (111) of the book.

4. The high-precision cutting method for book printing paper according to claim 3, characterized in that: The pressure strip is a rectangular pressure strip (5), and each outer surface of the rectangular pressure strip (5) is provided with an avoidance groove 1 (51), and four avoidance grooves 1 (51) are evenly arranged in the length direction of one half of the rectangular pressure strip (5), one avoidance groove 1 (51) corresponds to one gap 1 (34), and the avoidance groove 1 (51) is used to avoid the book binding part (111); It also includes a flip motor (6), which is arranged on the gantry (1) and is used to drive the rectangular pressure strip (5) to rotate so that the avoidance grooves (51) at different positions on the rectangular pressure strip (5) can all face downwards to the binding portion (111) of the book.

5. The high-precision cutting method for book printing paper according to claim 3, characterized in that: The strips include two groups of rectangular strips (5) arranged side by side in an upper and lower direction, each of the rectangular strips (5) having four outer surfaces, and each outer surface of the rectangular strips (5) is provided with an avoidance groove (51), wherein the avoidance groove (51) on one rectangular strip (5) is distributed on the first quarter section of the rectangular strip (5), and the avoidance groove (51) on the other rectangular strip (5) is distributed on the second quarter section of the rectangular strip (5), and one avoidance groove (51) corresponds to one gap (34); Both ends of the two rectangular pressure strips (5) are provided with a first bearing seat (8), and a flip motor (6) for independently controlling the rotation of the two rectangular pressure strips (5) is provided in the first bearing seat (8); A second bearing seat (9) is provided on a side of the first bearing seat (8) away from the rectangular pressure strip (5), and a revolving motor is provided in the second bearing seat (9) for adjusting the relative positions of the two rectangular pressure strips (5).

6. The high-precision cutting method for book printing paper according to claim 3, characterized in that: The pressure strip is a cylindrical pressure strip (7), and a section of the outer surface of the cylindrical pressure strip (7) is provided with avoidance grooves (71) arranged in a spiral shape, and a single avoidance groove (71) is an arc-shaped structure, and there is no axial overlap area between two adjacent avoidance grooves (71). The turning motor (6) is used to drive the cylindrical pressure strip (7) to rotate so that different avoidance grooves (71) can face the binding part (111) of the book.

7. The high-precision cutting method for book printing paper according to claim 3, characterized in that: The pressure strip comprises a second carrier (41), a slide (44) and a telescopic bolt (45); a pressure platform (42) is provided below the side of the second carrier (41) away from the book binding side (110); a second tooth portion (43) is provided below the other side of the second carrier (41); an avoidance groove (46) is formed between two adjacent second tooth portions (43); the slide (44) is located in the avoidance groove (46); the telescopic bolt (45) is threadedly connected to the second carrier (41) along a vertical direction, and the lower end of the telescopic bolt (45) is rotatably connected to the slide (44); After the slide table (44) descends, the lower surface of the slide table (44) is flush with the lower surface of the second tooth portion (43).

8. The high-precision cutting method for book printing paper according to claim 7, characterized in that: Side convex parts (431) are provided on both sides of the lower end of the second tooth portion (43), and the lower sides of the slide table (44) are adapted to the side convex parts (431).

9. A high-precision cutting method for book printing paper according to any one of claims 2 to 8, characterized in that: An infrared emitter (13) is provided in the gap one (34), and the infrared emitter (13) is used to emit infrared rays; The book binding portion (111) obtained in step 1 is located on the path of infrared rays emitted by any infrared emitter (13).

10. The high-precision cutting method for book printing paper according to claim 9, characterized in that: The cutting knife (10) is mounted on a knife holder (11), and both sides of the knife holder (11) are provided with inclined grooves (17). A fixed guide rod (18) is provided in an area on the gantry (1) opposite to the inclined groove (17). A reciprocating assembly (14) for pushing and pulling the knife holder (11) is provided on one side of the cutting table (2), so that the fixed guide rod (18) and the inclined groove (17) move relative to each other, thereby forming a state in which the cutting knife (10) is cut in an inclined manner.

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