Double-blade marking press capable of preventing paper jam

Abstract

The utility model provides an anti-paper-jam double-blade creasing machine which comprises a first side plate (13) and a second side plate (14), paper is conveyed by a first conveying rubber roller set (1) and a second conveying rubber roller set (2), the part, needing creasing, of the paper is positioned in a creasing area during creasing, and a first creasing unit (3) and a second creasing unit (4) are adjacently arranged in the creasing area side by side. The first creasing unit (3) is in sliding fit in the first guide groove (38), and the second creasing unit (4) is in sliding fit in the second guide groove (39); the upper end of the first guide groove (38) and the upper end of the second guide groove (39) are both provided with openings, a mounting cross beam (33) is further arranged above the openings, when paper is clamped, the mounting cross beam (33) can be detached and move upwards, and when the mounting cross beam (33) moves upwards, the upper cutter assembly (5) can be driven to move upwards to form a paper taking interval; therefore, when paper is jammed, the paper can be easily processed, and meanwhile, the structure is compact, and the size can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of creasing devices, in particular to an anti-paper jamming double-knife creasing machine. Background Art

[0002] The creasing machine is used for paper post-processing, mainly for making indentations, dotted lines, tear lines, etc. on paper.

[0003] In the industry, a creasing machine generally refers to a single-mark creasing machine, which generally includes an upper knife and a lower knife. During creasing, the upper knife and the lower knife move relative to each other to achieve the purpose of creasing. A typical example is a low-cost, high-performance digital creasing machine with authorization announcement number CN203093147U, which is provided with an upper knife die and a lower knife die that can move upward and downward toward each other.

[0004] There is also a special type that can make double marks. Two technical routes have been proposed for double marks. One is to set two indentation parts in an upper knife and a lower knife. Structurally, there is still only one upper knife and one lower knife. The structure is relatively compact, but it cannot be flexibly combined. For example, the authorization announcement number CN208148650U is called a double-knife flat rope indentation device. The indentation device includes two blades and a support table located on the lower side of the two blades. The two blades are installed at the bottom of the cross plate and driven up and down by the cross plate. The support table is provided with two grooves that match the blades. In addition, there is a swing-type design scheme, that is, the authorization announcement number CN103203898B is called a quick-change paper bidirectional indentation component and a bidirectional indentation device. The bidirectional indentation device includes an upper knife and a swingable lower knife, and two types of indentation are achieved by swinging.

[0005] The other is to adopt two sets of structural design schemes, for example, the authorization announcement number CN114603926B is called a double-blade creasing machine, which includes a first creasing conveying device and a second creasing conveying device, which are arranged side by side on the frame, the first creasing conveying device is used for front creasing processing, and the second creasing conveying device is used for back creasing processing. The first creasing conveying device and the second creasing conveying device both include a creasing positioning mechanism and a paper feeding mechanism; the creasing positioning mechanism is arranged on the frame, and the creasing positioning mechanism is used to creasing paper; the paper feeding mechanism is detachably connected to the frame and is located on the paper outlet side of the creasing positioning mechanism; the paper feeding mechanism is used to feed out the creasing paper.

[0006] But no matter which one, it is difficult to deal with when paper jam occurs.

[0007] The present invention proposes a double-knife creasing machine to prevent paper jams. When paper jams occur, it can be handled more easily. At the same time, the structure is compact, which is conducive to reducing the volume. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an anti-paper jam double-knife creasing machine, which can be easily handled when paper jam occurs and has a compact structure, which is conducive to reducing the volume.

[0009] Compared with the prior art, the utility model proposes an anti-paper jam double-knife creasing machine, comprising a first side plate and a second side plate, and a first conveying rubber roller group and a second conveying rubber roller group rotatably connected between the first side plate and the second side plate, the adjacent interval between the first conveying rubber roller group and the second conveying rubber roller group serving as a creasing area, characterized in that paper is conveyed by the first conveying rubber roller group and the second conveying rubber roller group and the part of the paper to be creasing is positioned in the creasing area during creasing, two creasing units are arranged adjacent to each other in the creasing area, which are the first creasing unit and the second creasing unit respectively along the paper feeding direction, each group of creasing units comprises an upper knife assembly and a lower knife assembly which can be opened and closed up and down, and the upper and lower intervals between the upper knife assembly and the lower knife assembly are for paper to pass through.

[0010] The first side panel is provided with a front guide rail, a middle guide rail and a rear guide rail which are all vertically arranged in sequence along the paper feeding direction. Similarly, the second side panel is also provided with a front guide rail, a middle guide rail and a rear guide rail which are all vertically arranged in sequence along the paper feeding direction. A first guide groove is formed between adjacent front guide rails and middle guide rails, and a second guide groove is formed between adjacent middle guide rails and rear guide rails. The upper knife assembly and the lower knife assembly of the first creasing unit slide up and down in the first guide groove, and the upper knife assembly and the lower knife assembly of the second creasing unit slide up and down in the second guide groove.

[0011] The upper ends of the first guide groove and the second guide groove are both opened, and the two axial ends of the upper knife assembly can slide from top to bottom through the openings to fit into the corresponding first guide groove and second guide groove.

[0012] A mounting crossbeam is also provided above the opening. The mounting crossbeam is detachably installed between the first side plate and the second side plate and is supported. The lower side of the mounting crossbeam is connected to the upper knife assembly. When paper jam occurs, the mounting crossbeam can be removed and moved upward. When the mounting crossbeam moves upward, it can drive the upper knife assembly to move upward. When the upper knife assembly moves upward, it forms a paper picking interval with the lower knife assembly.

[0013] After adopting the above structure, compared with the prior art, the utility model has the following advantages:

[0014] The present invention achieves the purpose of preventing paper jams for a double-knife creasing machine, specifically:

[0015] On the one hand, in order to prevent paper jams, the present invention designs a double-knife creasing machine, which sets two creasing units adjacent to each other with a small adjacent interval. Since the two creasing units are set adjacent to each other, the adjacent intervals between the first conveying rubber roller group and the second conveying rubber roller group are also reduced. The first conveying rubber roller group and the second conveying rubber roller group can better position the paper in the creasing area, thereby obtaining higher positioning accuracy and positioning strength, maintaining the accurate position of the paper and the tension stability of the paper, thereby eliminating the need to set an additional conveying roller group between the two creasing units to ensure the conveyance of the paper, eliminating the structure of the conveying roller group, and helping to further simplify the structure while making the structure more compact.

[0016] On this basis, the first side plate and the second side plate are sequentially provided with a front guide rail, a middle guide rail and a rear guide rail which are all vertically arranged along the paper feeding direction, a first guide groove is formed between the adjacent front guide rails and the middle guide rails, and a second guide groove is formed between the adjacent middle guide rails and the rear guide rails, the upper knife assembly and the lower knife assembly of the first creasing unit slide up and down in the first guide groove, and the upper knife assembly and the lower knife assembly of the second creasing unit slide up and down in the second guide groove. In addition, the upper end of the first guide groove and the upper end of the second guide groove are both set as openings, and the axial ends of the upper knife assembly can slide down from the opening from top to bottom and fit into the corresponding first guide groove and second guide groove.

[0017] A mounting crossbeam is also provided above the opening. The mounting crossbeam can be detachably installed between the first side plate and the second side plate and is supported. The lower side of the mounting crossbeam is connected to the upper knife assembly. When paper jam occurs, the mounting crossbeam can be removed and moved upward. When the mounting crossbeam moves upward, it can drive the upper knife assembly to move upward. The upward movement of the upper knife assembly forms a paper taking interval with the lower knife assembly, thereby solving the paper jam problem. After the jammed paper is taken out, the mounting crossbeam moves downward and is reinstalled between the first side plate and the second side plate and is supported.

[0018] As described above, when a paper jam occurs, it can be handled relatively easily. At the same time, the compact structure is conducive to reducing the volume. That is to say, the anti-paper jam double-knife creasing machine disclosed in the present invention can be made smaller, especially the size in the length direction along the paper travel direction is reduced.

[0019] In some embodiments, the upper side of the mounting beam is configured to be free of obstructions, or to have obstructions, but the obstructions can be removed. When paper jams, the mounting beam can be disassembled and moved upward. When moving upward, the mounting beam can drive the upper knife assembly to move upward through the opening and out of the corresponding first guide groove and second guide groove. After the upper knife assembly is moved out, an upwardly open paper removal opening is formed.

[0020] In some embodiments, the upper knife assembly of the first creasing unit and the upper knife assembly of the second creasing unit are installed on the same mounting beam, and when the mounting beam is moved up and down, the upper knife assembly of the first creasing unit and the upper knife assembly of the second creasing unit move up and down together.

[0021] In some embodiments, support blocks are provided on the outer sides of the first guide groove and the second guide groove, each support block is installed on the first side plate and the second side plate, the mounting beam is installed in close contact with each support block, the upper side surface of each support block serves as a positioning surface, and the mounting beam is detachably installed between the first side plate and the second side plate through each support block and is supported.

[0022] In some embodiments, the height of the middle guide rail is greater than that of the front guide rail and the rear guide rail, and the middle parts of the two ends of the mounting beam are connected to the middle guide rail from top to bottom by bolts, and the support blocks and the middle guide rail on both sides jointly pull the mounting beam downward.

[0023] In some embodiments, the front guide rail and the rear guide rail form upper and lower intervals with the mounting crossbeam, and the upper and lower intervals on both sides are used to install the support blocks on both sides respectively.

[0024] In some embodiments, a front sensor and a rear sensor are further included. The front sensor is detachably mounted on the inner side of the front guide rail, and the rear sensor is detachably mounted on the inner side of the rear guide rail.

[0025] In some embodiments, the vertical outer side surface of the front guide rail and / or the vertical outer side surface of the rear guide rail are provided with avoidance recesses, the avoidance recesses on the vertical outer side surface of the front guide rail are used to avoid the first conveying rubber roller group so that the first conveying rubber roller group is close to the first indentation unit, and at the same time, the two indentation units are closer to each other, and the avoidance recesses on the vertical outer side surface of the rear guide rail are used to avoid the second conveying rubber roller group so that the second conveying rubber roller group is close to the second indentation unit, and at the same time, the two indentation units are closer to each other.

[0026] In some embodiments, a driving shaft is provided at the lower side of each of the two creasing units, and the two driving shafts are adjacently arranged along the paper feeding direction, and the two driving shafts are respectively a first driving shaft and a second driving shaft, the first driving shaft is driven by a first electric motor to drive the lower knife assembly of the first creasing unit, and the second driving shaft is driven by a second electric motor to drive the lower knife assembly of the second creasing unit;

[0027] Each driving shaft is provided with a driving cam, and the driving cam is axially staggered to reduce the adjacent interval between two indentation units, and / or the two driving shafts are vertically staggered to reduce the adjacent interval between two indentation units.

[0028] In some embodiments, for the case where the two driving shafts are staggered up and down, each driving shaft is also provided with a driving cam of the same size, and the driving cam on the first driving shaft is connected to the lower knife assembly of the first indentation unit via a driving rod. Similarly, the driving cam on the second driving shaft is connected to the lower knife assembly of the second indentation unit via a driving rod to reduce the adjacent interval between the two indentation units. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram showing a second side panel of an anti-paper jam double-knife creasing machine from a side perspective.

[0030] Figure 2 for Figure 1 3D schematic diagram after removing the second side panel.

[0031] Figure 3 The present invention is a three-dimensional schematic diagram of an anti-paper jam double-knife creasing machine forming an open paper taking opening.

[0032] Figure 4 It is a three-dimensional schematic diagram of a detachable assembly formed by installing the upper knife assembly of the first creasing unit and the upper knife assembly of the second creasing unit on the same mounting beam.

[0033] Figure 5 for Figure 4 A three-dimensional schematic diagram of the upper knife after further removing the upper knife of the upper knife assembly of the first creasing unit and the upper knife assembly of the second creasing unit.

[0034] Figure 6 It is a three-dimensional schematic diagram showing a first side panel of an anti-paper jam double-knife creasing machine from a side perspective.

[0035] Explanation of the reference numerals: 1-first conveying rubber roller group, 2-second conveying rubber roller group, 3-first indentation unit, 4-second indentation unit, 5-upper knife assembly, 6-lower knife assembly, 7-first driving shaft, 8-second driving shaft, 9-upper knife seat, 10-upper knife, 11-lower knife seat, 12-lower knife, 13-first side plate, 14-second side plate, 15-front guide rail, 16-middle guide rail, 17-rear guide rail, 18-avoidance depression, 19-front side sensor, 20-rear side sensor, 21-driving cam, 22-driving Rod, 23-position detection disk, 24-position sensor, 25-rubber roller group drive motor, 26-passive pulley, 27-pulley group, 28-active pulley, 29-first synchronous belt, 30-second synchronous belt, 31-third synchronous belt, 32-knife in and out through hole, 33-mounting beam, 34-first electric motor, 35-second electric motor, 36-buffer block, 37-bolt, 38-first guide groove, 39-second guide groove, 40-support block, 41-positioning surface, 42-connecting hole, 43-slot. DETAILED DESCRIPTION

[0036] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0037] like Figures 1 to 6 The figure shows an anti-paper jam double-knife creasing machine, comprising a first conveying rubber roller group 1 and a second conveying rubber roller group 2, the adjacent interval between the first conveying rubber roller group 1 and the second conveying rubber roller group 2 is used as a creasing area, the first conveying rubber roller group 1 is used as a paper feeding rubber roller group, and the second conveying rubber roller group 2 is used as a paper discharging rubber roller group, the paper is conveyed by the first conveying rubber roller group 1 and the second conveying rubber roller group 2, and the part of the paper to be creasing is positioned in the creasing area during creasing, two creasing units are arranged adjacent to each other in the creasing area, which are a first creasing unit 3 and a second creasing unit 4 along the paper feeding direction, each group of creasing units includes an upper knife assembly 5 and a lower knife assembly 6 which can be opened and closed up and down, and the upper and lower intervals between the upper knife assembly 5 and the lower knife assembly 6 are for paper to pass through.

[0038] A driving shaft is provided on the lower side of each of the two creasing units. The two driving shafts are adjacently arranged along the paper feeding direction. The two driving shafts are respectively a first driving shaft 7 and a second driving shaft 8. The first driving shaft 7 is driven by a first electric motor 34 to drive the first creasing unit 3, and the second driving shaft 8 is driven by a second electric motor 35 to drive the second creasing unit 4.

[0039] Since the control technology of electric motors is relatively mature, they can be controlled by a single chip microcomputer or a PLC as a control unit. For example, a program can be set in the control unit to set the conveying distances of the first conveying rubber roller group 1 and the second conveying rubber roller group 2. The two positionings have different conveying distances, thereby achieving two positionings. Specifically, after the first paper positioning, the first electric motor 34 drives the first drive shaft 7 to rotate through the second synchronous belt 30 for indentation, and then the paper is transported forward for a distance (the distance can be set) to position the paper for the second time. At this time, the second electric motor 35 drives the second drive shaft 8 to rotate through the third synchronous belt 31 for indentation, and this cycle repeats.

[0040] Based on whether the paper is continuous or not, for the need of single-sheet creasing, after creasing, the second conveying rubber roller group 2 completely delivers the paper, and the first conveying rubber roller group 1 delivers new paper. For continuous paper, the continuous paper is continuously conveyed by the first conveying rubber roller group 1 and the second conveying rubber roller group 2, thereby achieving multiple creasing.

[0041] In some embodiments, Figure 1 ,2 As shown in FIGS. 4 and 5 , the upper knife assembly 5 includes an upper knife seat 9 and an upper knife 10. The upper knife 10 can be inserted and removed from the side of the upper knife seat 9. Figure 5 As shown, the upper knife 10 has been removed from the side of the upper knife seat 9. It can be seen that an axially arranged slot 43 is provided on the side of the upper knife seat 9, and the slot 43 is used for inserting the upper knife 10.

[0042] In some embodiments, Figure 1 , 2 As shown, the lower knife assembly 6 includes a lower knife seat 11 and a lower knife 12 . The lower knife 12 can be inserted and removed from the side of the lower knife seat 11 , that is, a slot 43 can also be provided.

[0043] In this way, the upper knife 10 and the knife 12 can be replaced, thereby forming a richer combination of indentations.

[0044] The anti-paper jam double-knife creasing machine includes a first side plate 13 and a second side plate 14, an upper knife seat 9 and a lower knife seat 11 are both located between the first side plate 13 and the second side plate 14, the first side plate 13 is provided with a front guide rail 15, a middle guide rail 16 and a rear guide rail 17 which are all vertically arranged in sequence along the paper feeding direction, similarly, the second side plate 14 is also provided with a front guide rail 15, a middle guide rail 16 and a rear guide rail 17 which are all vertically arranged in sequence along the paper feeding direction, a first guide groove 38 is formed between adjacent front guide rails 15 and middle guide rails 16, a second guide groove 39 is formed between adjacent middle guide rails 16 and rear guide rails 17, the upper knife assembly 5 and the lower knife assembly 6 of the first creasing unit 3 are slidably fitted in the first guide groove 38, and the upper knife assembly 5 and the lower knife assembly 6 of the second creasing unit 4 are slidably fitted in the second guide groove 39. After such design, on the one hand, the adjacent interval between the first indentation unit 3 and the second indentation unit 4 is theoretically only the width of the middle guide rail 16, and the first indentation unit 3 and the second indentation unit 4 can be very close to each other, which is conducive to a more compact structure. On the other hand, such a close enough interval makes it unnecessary to set an additional conveying roller group between the first indentation unit 3 and the second indentation unit 4, which is conducive to further simplifying the structure.

[0045] like Figure 2 , 3 As shown, the upper end of the first guide groove 38 and the upper end of the second guide groove 39 are both opened, and the axial ends of the upper knife assembly 5 can slide from top to bottom from the opening to fit into the corresponding first guide groove 38 and second guide groove 39.

[0046] A mounting crossbeam 33 is also provided above the opening. The mounting crossbeam 33 is detachably mounted between the first side plate 13 and the second side plate 14 and supported. The lower side of the mounting crossbeam 33 is connected to the upper knife assembly 5. When paper is jammed, the mounting crossbeam 33 can be removed and moved upward. When the mounting crossbeam 33 moves upward, it can drive the upper knife assembly 5 to move upward. When the upper knife assembly 5 moves upward, it forms a paper picking interval with the lower knife assembly 6.

[0047] In some embodiments, Figure 1 , 2 As shown in Figures 3, 4, and 5, the upper side of the mounting crossbeam 33 is set to be free of obstacles or with obstacles, but the obstacles can be removed. When paper jams, the mounting crossbeam 33 can be disassembled and moved upward. When the mounting crossbeam 33 moves upward, it can drive the upper knife assembly 5 to move upward through the opening and out of the corresponding first guide groove 38 and second guide groove 39. After the upper knife assembly 5 is moved out, an upwardly open paper removal opening is formed. In this way, there is a larger operating space compared to the paper removal interval.

[0048] The obstruction is, for example, a sensor. When the sensor is arranged closer to the upper knife assembly 5, when the crossbeam 33 is disassembled, the sensor needs to be disassembled first so that the disassembled crossbeam 33 can be moved upward.

[0049] If the blocking object is other objects, it can be disassembled in the same way, so that the disassembled crossbeam 33 can be moved upward.

[0050] like Figure 4 As shown, the mounting crossbeam 33 together with the upper knife assembly 5 of the first creasing unit 3 and the upper knife assembly 5 of the second creasing unit 4 connected thereto constitute a detachable assembly, which may also be as shown in FIG. Figure 5 As shown, the detachable component can be removed from the anti-paper jam double-knife creasing machine by first removing the upper knife 10.

[0051] In order to facilitate the replacement of the upper knife 10 and the lower knife 12, the sides of the upper knife 10 and the lower knife 12 are provided with a connection hole 42 for connecting the knife handle. The knife handle is not shown in this example. After the knife handle is connected, the user can hold the knife handle, so as to more conveniently and easily pull out and insert the upper knife 10 and the lower knife 12. Due to the existence of the knife handle, when the detachable component is taken out upward, the knife handle will interfere with the knife inlet and outlet through hole 32. Therefore, the upper knife 10 can be removed from the detachable component first, and then the detachable component can be removed upward from the anti-paper jam double knife creasing machine, thereby forming a Figure 5 Status shown.

[0052] like Figure 3 As shown, when the detachable assembly is removed upward, a huge upwardly opened paper removal opening will be exposed. Such a design is convenient for disassembly and assembly on the one hand, and convenient and efficient for clearing paper jams on the other hand.

[0053] In some embodiments, Figure 1 , 2 As shown in Figures 4 and 5, the upper knife assembly 5 of the first indentation unit 3 and the upper knife assembly 5 of the second indentation unit 4 are mounted on the same mounting crossbeam 33. When the mounting crossbeam 33 is moved up and down, the upper knife assembly 5 of the first indentation unit 3 and the upper knife assembly 5 of the second indentation unit 4 move up and down together. Since the upper knife assembly 5 and the lower knife assembly 6 have certain precision requirements for the upper and lower cooperation, and the upper knife assembly 5 and the lower knife assembly 6 respectively have certain precision requirements for the sliding cooperation with the first guide groove 38 and the second guide groove 39, the above-mentioned design, on the one hand, can maintain a certain precision during repeated disassembly and assembly, without the need for the user to operate the precision, and is convenient for the user to eliminate paper jams. On the other hand, since the same mounting crossbeam 33 is used instead of a separate mounting crossbeam 33, the same mounting crossbeam 33 has a larger width, which is conducive to providing higher strength. The higher strength mounting crossbeam 33 is conducive to resisting the impact during the indentation operation, thereby maintaining stability and precision.

[0054] In some embodiments, Figure 1 , 2 As shown in FIGS. 4 and 5, support blocks 40 are provided outside the first guide groove 38 and the second guide groove 39, and each support block 40 is installed on the first side plate 13 and the second side plate 14. The installation beam 33 is installed in a vertically fitted manner with each support block 40, and the upper side surface of each support block 40 serves as a positioning surface 41. The installation beam 33 is detachably installed between the first side plate 13 and the second side plate 14 through each support block 40 and is supported. In this way, it is helpful to ensure the installation accuracy of the installation beam 33.

[0055] To facilitate disassembly and assembly, each support block 40 can be connected to the mounting beam 33 via a bolt 37. Specifically, the bolt 37 passes through the mounting beam 33 from top to bottom and is threadedly connected to each support block 40, thereby locking the mounting beam 33 on each support block 40, and the mounting beam 33 is well supported.

[0056] The middle guide rail 16 can be a whole piece, such as Figure 2 As shown, it can also be multiple pieces or multiple pieces spliced, preferably one piece, thereby simplifying production and assembly. Similarly, the front guide rail 15 and the rear guide rail 17 are also one piece.

[0057] In this example, if Figure 1 As shown, the corresponding first indentation unit 3 and the second indentation unit 4 of the second side plate 14 are respectively provided with a knife entry and exit through hole 32 at one end of the second side plate 14. The knife entry and exit through hole 32 can be used to conveniently replace different upper knives 10 and lower knives 12, thereby forming different combinations of indentation functions. Of course, the important thing is to be able to perform positive and negative indentation processing.

[0058] In some embodiments, Figure 3 , 6 As shown, the vertical outer side surface of the front guide rail 15 and / or the vertical outer side surface of the rear guide rail 17 are provided with an avoidance recess 18, and the avoidance recess 18 of the vertical outer side surface of the front guide rail 15 is used to avoid the first conveying rubber roller group 1 so that the first conveying rubber roller group 1 is close to the first indentation unit 3, and at the same time, the two indentation units are closer to each other, and the avoidance recess 18 of the vertical outer side surface of the rear guide rail 17 is used to avoid the second conveying rubber roller group 2 so that the second conveying rubber roller group 2 is close to the second indentation unit 4, and at the same time, the two indentation units are closer to each other. In this example, the vertical outer side surface of the front guide rail 15 and the vertical outer side surface of the rear guide rail 17 are both provided with an avoidance recess 18, so that the interval between the first conveying rubber roller group 1 and the second conveying rubber roller group 2 is smaller, which is conducive to the two indentation units being closer to each other.

[0059] In some embodiments, Figure 3 , 6 As shown, the front sensor 19 and the rear sensor 20 are also included. The front sensor 19 is detachably mounted on the inner side of the front rail 15, and the rear sensor 20 is detachably mounted on the inner side of the rear rail 17. In this way, on the one hand, it is helpful to simplify the structure and solve the problem of setting the front sensor 19 and the rear sensor 20. On the other hand, it supports the purpose of setting two indentation units adjacent to each other. On the other hand, if the front sensor 19 and the rear sensor 20 interfere with the vertical disassembly of the detachable component, the front sensor 19 and the rear sensor 20 can be removed first, so that the detachable component can be disassembled vertically.

[0060] The front sensor 19 and the rear sensor 20 are used to detect the condition of the paper, for example, whether there is paper.

[0061] In some embodiments, Figure 2 , 3 As shown, the height of the middle guide rail 16 is greater than the height of the front guide rail 15 and the rear guide rail 17, and the middle parts of the two ends of the mounting crossbeam 33 are connected to the middle guide rail 16 from top to bottom by bolts 37, and the support blocks 40 on both sides and the middle guide rail 16 together play a role of pulling down the mounting crossbeam 33. Since the working principle of the creasing machine is repeated opening and closing, in the present disclosure, each time the creasing is performed, the lower knife assembly 6 will impact the upper knife assembly 5 upward, so when designing the anti-paper jam double knife creasing machine, the above-mentioned improvement can achieve the purpose of double knife creasing while being more reliable, which is also more conducive to accuracy.

[0062] In this example, during assembly, the height of the middle guide rail 16 is greater than the height of the front guide rail 15 and the rear guide rail 17 so that the raised portions of the front and rear sides of the middle guide rail 16 are used as reference assembly surfaces to facilitate assembly of the upper knife assembly 5. Due to the high precision, after such a design, during assembly, the raised portions of the front and rear sides of the middle guide rail 16 can be used as reference assembly surfaces to conveniently insert the upper knife assembly 5 into the guide groove, thereby reducing the burden of alignment and insertion. Of course, the reference assembly surface can also be used to first insert the lower knife assembly 6 into the guide groove and then install the upper knife assembly 5.

[0063] In some embodiments, Figure 2 , 3 As shown, the front guide rail 15 and the rear guide rail 17 form an upper and lower interval with the installation beam 33, and the upper and lower intervals on both sides are respectively used to install the support blocks 40 on both sides. In this way, on the one hand, the structure is more compact, and on the other hand, when the upper knife assembly 5 of the first indentation unit 3 and the upper knife assembly 5 of the second indentation unit 4 are installed on the same installation beam 33, the width of the installation beam 33 can be controlled within a reasonable range under the premise that the strength meets the requirements, so that the width of the installation beam 33 does not have to be made very wide because the support blocks 40 on both sides are far apart, avoiding the weight of the installation beam 33 being too heavy.

[0064] In some embodiments, Figure 3 As shown, each driving shaft is provided with a driving cam 21, and the driving cam 21 is axially staggered to reduce the adjacent interval between two indentation units, which is more conducive to reducing the adjacent interval between two indentation units.

[0065] In this example, two driving cams 21 are provided on each driving shaft, and the two driving cams 21 on the first driving shaft 7 and the two driving cams 21 on the second driving shaft 8 are staggered in the axial direction. Figure 3 As shown, the two drive cams 21 on the second drive shaft 8 are located between the two drive cams 21 on the first drive shaft 7 .

[0066] In some embodiments, Figure 1 , 2 As shown, one end of each of the two drive shafts is provided with a position detection disk 23, and the two position detection disks 23 are axially staggered to reduce the adjacent interval between the two indentation units. The position detection disk 23 is used to detect the rotation angle of the drive shaft.

[0067] The two position detection disks 23 are respectively provided with position sensors 24 in the circumference, and the position sensors 24 are, for example, grating sensors, so as to detect the rotation angle of the two driving shafts, and then control the rotation angle of the driving cam 21. The driving cam 21 pushes the lower knife assembly 6 to move upward, and the lower knife assembly 6 and the upper knife assembly 5 close the indentation up and down.

[0068] In some embodiments, Figure 3 As shown, the two drive shafts are staggered up and down to reduce the adjacent interval between the two indentation units. This can further reduce the adjacent interval between the two indentation units.

[0069] In this example, the first drive shaft 7 and the second drive shaft 8 are distributed up and down.

[0070] like Figure 2 , 6 As shown, due to the different heights, in order to keep the size of the driving cam 21 uniform, thereby facilitating the reduction of the adjacent intervals between the two driving shafts while being able to act on the lower knife seat 11, the lower knife seat 11 is provided with a vertically arranged driving rod 22, and the lower end of the driving rod 22 is located directly above the corresponding driving cam 21, and is against the upper part of the cam surface of the driving cam 21.

[0071] In some embodiments, Figure 4 , 5 As shown, it also includes a rubber roller group driving motor 25, which is located on one side of the first side plate 13, and a first electric motor 34 and a second electric motor 35 are located on one side of the second side plate 14; one end of the first conveying rubber roller group 1 and the second conveying rubber roller group 2 located on one side of the first side plate 13 are connected to two passive pulleys 26 distributed up and down, and the two passive pulleys 26 distributed up and down constitute a pulley group 27, and the output end of the rubber roller group driving motor 25 is connected to a driving pulley 28, which is located at the lower side of each pulley group 27, and the driving pulley 28 and the two pulley groups 27 form an isosceles triangle distribution, and the driving pulley 28 and the two pulley groups 27 are connected to each other through a first synchronous belt 29 with a V-shaped layout. The rubber roller group driving motor 25 drives the first conveying rubber roller group 1 and the second conveying rubber roller group 2 to move at the same time through the first synchronous belt 29. In this way, on the one hand, it is beneficial to reduce the adjacent interval between the two creasing units, on the other hand, it is beneficial to achieve the synchronous movement of the first conveying rubber roller group 1 and the second conveying rubber roller group 2. On the other hand, since the rubber roller group driving motor 25 is located on the side of the first side plate 13, and the first electric motor 34 and the second electric motor 35 are located on the side of the second side plate 14, it is beneficial to reduce the lateral size of the entire anti-paper jam double-knife creasing machine, and the lateral size refers to the direction perpendicular to the direction of paper travel.

[0072] In this example, the rubber roller group driving motor 25 is located on the inner side of one side of the first side plate 13 , and the first electric motor 34 and the second electric motor 35 are located on the inner side of one side of the second side plate 14 .

[0073] In this example, the upper knife seat 9 of the anti-paper jam double-knife creasing machine can be installed on the mounting beam 33, and the upper knife seat 9 is supported by the mounting beam 33, while the lower knife seat 11 is configured to be movable up and down.

[0074] In order to cushion the impact force of the indentation, a buffer block 36 is provided between the mounting beam 33 and the upper tool seat 9. The bolt 37 passes through the mounting beam 33 and the buffer block 36 from top to bottom in sequence to reach the upper tool seat 9 and is threadedly connected to the upper tool seat 9. The upper tool seat 9 is hoisted on the lower side of the buffer block 36, and the buffer block 36 is pre-compressed between the mounting beam 33 and the upper tool seat 9.

[0075] Since the mounting crossbeam 33 and the support block 40 and the middle guide rail 16 are connected from top to bottom by bolts 37, when disassembling or assembling, the bolts 37 are loosened from the upper side of the mounting crossbeam 33, and the detachable assembly can be taken out upward as a whole, thereby forming an opening for taking out the paper. After taking out the paper, the detachable assembly can be installed back downward as a whole in the opposite direction, and then the connection can be restored by the bolts 37.

[0076] When understanding the present disclosure, if necessary, the above structure can refer to other embodiments / appendices. Figure 1 And understand, no further elaboration here.

[0077] The above description is only an illustrative embodiment of the present invention, so any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent protection scope of the present invention are included in the patent protection scope of the present invention.

Claims

1. A double-knife creasing machine for preventing paper jams, comprising a first side plate (13) and a second side plate (14), and a first conveying rubber roller group (1) and a second conveying rubber roller group (2) rotatably connected between the first side plate (13) and the second side plate (14), wherein the adjacent interval between the first conveying rubber roller group (1) and the second conveying rubber roller group (2) serves as a creasing area, characterized in that: The paper is transported by a first transport rubber roller group (1) and a second transport rubber roller group (2), and during the indentation, the portion of the paper to be indented is positioned in the indentation area. Two indentation units are arranged adjacent to each other in the indentation area, which are respectively a first indentation unit (3) and a second indentation unit (4) along the paper feeding direction. Each group of indentation units comprises an upper knife assembly (5) and a lower knife assembly (6) which can be opened and closed upward and downward, and an upper and lower gap between the upper knife assembly (5) and the lower knife assembly (6) is provided for the paper to pass through. The first side plate (13) is provided with a front guide rail (15), a middle guide rail (16) and a rear guide rail (17) which are all arranged vertically in sequence along the paper feeding direction. Similarly, the second side plate (14) is also provided with a front guide rail (15), a middle guide rail (16) and a rear guide rail (17) which are all arranged vertically in sequence along the paper feeding direction. A first guide groove (38) is formed between adjacent front guide rails (15) and middle guide rails (16), and a second guide groove (39) is formed between adjacent middle guide rails (16) and rear guide rails (17). The upper knife assembly (5) and the lower knife assembly (6) of the first creasing unit (3) are slidably engaged in the first guide groove (38), and the upper knife assembly (5) and the lower knife assembly (6) of the second creasing unit (4) are slidably engaged in the second guide groove (39). The upper ends of the first guide groove (38) and the second guide groove (39) are both opened, and the two axial ends of the upper knife assembly (5) can slide down from the opening from top to bottom to fit into the corresponding first guide groove (38) and the second guide groove (39); A mounting crossbeam (33) is also provided above the opening. The mounting crossbeam (33) is detachably mounted between the first side plate (13) and the second side plate (14) and supported. The lower side of the mounting crossbeam (33) is connected to the upper knife assembly (5). When paper is jammed, the mounting crossbeam (33) can be removed and moved upward. When the mounting crossbeam (33) moves upward, it can drive the upper knife assembly (5) to move upward. When the upper knife assembly (5) moves upward, it forms a paper picking interval with the lower knife assembly (6).

2. The anti-paper jam double-knife creasing machine according to claim 1, characterized in that: The upper side of the installation beam (33) is arranged to have no obstruction, or to have an obstruction, but the obstruction can be removed. When paper jams, the installation beam (33) can be disassembled and moved upward. When the installation beam (33) moves upward, it can drive the upper knife assembly (5) to move upward through the opening and out of the corresponding first guide groove (38) and second guide groove (39). After the upper knife assembly (5) moves out, an upwardly open paper removal opening is formed.

3. The anti-paper jam double-knife creasing machine according to claim 1 or 2, characterized in that: The upper knife assembly (5) of the first indentation unit (3) and the upper knife assembly (5) of the second indentation unit (4) are mounted on the same mounting crossbeam (33); when the mounting crossbeam (33) is moved up and down, the upper knife assembly (5) of the first indentation unit (3) and the upper knife assembly (5) of the second indentation unit (4) move up and down together.

4. The anti-paper jam double-knife creasing machine according to claim 3, characterized in that: Support blocks (40) are provided on the outer sides of the first guide groove (38) and the second guide groove (39), and each support block (40) is installed on the first side plate (13) and the second side plate (14). The installation beam (33) and each support block (40) are installed in a vertically fitted manner, and the upper side surface of each support block (40) serves as a positioning surface (41). The installation beam (33) is detachably installed between the first side plate (13) and the second side plate (14) through each support block (40) and is supported.

5. The anti-paper jam double-knife creasing machine according to claim 4, characterized in that: The height of the middle guide rail (16) is greater than the height of the front guide rail (15) and the rear guide rail (17), and the middle parts of the two ends of the installation beam (33) are connected to the middle guide rail (16) from top to bottom through bolts (37), and the support blocks (40) and the middle guide rail (16) on both sides jointly play a role in pulling down the installation beam (33).

6. The anti-paper jam double-knife creasing machine according to claim 5, characterized in that: The front guide rail (15) and the rear guide rail (17) form upper and lower intervals with the installation crossbeam (33), and the upper and lower intervals on both sides are used to install the support blocks (40) on both sides respectively.

7. The anti-paper jam double-knife creasing machine according to claim 1, characterized in that: It also includes a front sensor (19) and a rear sensor (20), wherein the front sensor (19) is detachably mounted on the inner side of the front guide rail (15), and the rear sensor (20) is detachably mounted on the inner side of the rear guide rail (17).

8. The anti-paper jam double-knife creasing machine according to claim 1, characterized in that: The vertical outer side surface of the front guide rail (15) and / or the vertical outer side surface of the rear guide rail (17) are provided with an avoidance recess (18); the avoidance recess (18) of the vertical outer side surface of the front guide rail (15) is used to avoid the first conveying rubber roller group (1) so that the first conveying rubber roller group (1) is close to the first indentation unit (3), and at the same time, the two indentation units are closer to each other; the avoidance recess (18) of the vertical outer side surface of the rear guide rail (17) is used to avoid the second conveying rubber roller group (2) so that the second conveying rubber roller group (2) is close to the second indentation unit (4), and at the same time, the two indentation units are closer to each other.

9. The anti-paper jam double-knife creasing machine according to claim 1, characterized in that: A driving shaft is provided at the lower side of each of the two creasing units. The two driving shafts are adjacently arranged along the paper feeding direction. The two driving shafts are respectively a first driving shaft (7) and a second driving shaft (8). The first driving shaft (7) is driven by a first electric motor (34) to drive a lower knife assembly (6) of the first creasing unit (3), and the second driving shaft (8) is driven by a second electric motor (35) to drive a lower knife assembly (6) of the second creasing unit (4). Each driving shaft is provided with a driving cam (21), and the driving cam (21) is axially staggered to reduce the adjacent interval between two indentation units, and / or the two driving shafts are vertically staggered to reduce the adjacent interval between two indentation units.

10. The anti-paper jam double-knife creasing machine according to claim 1, characterized in that: In the case where the two drive shafts are staggered in the upper and lower positions, each drive shaft is further provided with a drive cam (21) of the same size, and the drive cam (21) on the first drive shaft (7) is connected to the lower knife assembly (6) of the first indentation unit (3) through a drive rod (22). Similarly, the drive cam (21) on the second drive shaft (8) is connected to the lower knife assembly (6) of the second indentation unit (4) through a drive rod (22), so as to reduce the adjacent interval between the two indentation units.

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