Paperboard printing equipment

Abstract

The invention relates to the technical field of paperboard printing processing, in particular to paperboard printing equipment which comprises a rack, a supporting unit, a separation unit, a conveying unit and a printing unit, the supporting unit is fixedly connected with the rack and provided with a negative pressure supporting end, and the separation unit is fixedly connected with the rack and provided with a separation end. The separating end is provided with a first working position and a second working position, the conveying unit is provided with two conveying assemblies fixedly connected with the rack, the conveying assemblies are symmetrically arranged with the separating unit as the center line, each conveying assembly is provided with a split conveying channel, the two split conveying channels are combined to form an integrated conveying channel, and the printing unit is fixedly connected with the rack. The printer has a printing end. Through cooperation of the split conveying channel, the separation unit and the printing unit, small-size paperboards are moved and printed, synchronous printing of two sets of small-size paperboards is achieved, and the printing time of the small-size paperboards is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of cardboard printing and processing, in particular to a cardboard printing device. Background Art

[0002] Cardboard is a common material mainly used to make cartons.

[0003] At present, due to the influence of the appearance and size of the goods, cardboard usually needs to be cut into various specifications to meet production needs. During the processing of cardboard, due to the process requirements of cardboard, it is necessary to spray patterns or texts on the surface of the cardboard. During the processing of cardboard, the existing printing equipment manually places the cardboard on the tooling and then prints it. Although this printing method can be used, it takes a long time for the manual positioning of the cardboard, resulting in low printing efficiency.

[0004] In order to solve the above technical problems, a cardboard printing device is disclosed in a patent application with application number CN202120541306.3 and application date of March 16, 2021. Although the patent can be used, the transport channel can only position one cardboard at a time when printing, and cards of different specifications can only be placed in the transport channel one by one for printing, which causes the problem of low printing efficiency of the cardboard. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a cardboard printing device to solve the problem that the transportation channel in the printing device can only position one cardboard at a time, and cardboards of different specifications can only be placed in the transportation channel one by one for printing, resulting in low printing efficiency of the cardboard.

[0006] Based on the above purpose, the present invention provides a cardboard printing device, including a frame; a supporting unit, fixedly connected to the frame, having a negative pressure supporting end for supporting a cardboard; a partitioning unit, fixedly connected to the frame, having a partitioning end capable of vertical movement, the partitioning end having a first working position and a second working position; a transmission unit, having two groups of transmission components fixedly connected to the frame, the transmission components being symmetrically arranged with the partitioning unit as a midline, the transmission components having a split transmission channel for driving the cardboard to move, the two groups of split transmission channels being combined to form an integrated transmission channel; a printing unit, fixedly connected to the frame, having a printing end capable of moving in a direction perpendicular to the integrated transmission channel; when the partitioning end is located at the first working position, the partitioning end is located in the integrated transmission channel, the two groups of cardboards move through the split transmission channel, and the printing end independently prints the cardboards in the split transmission channel; when the partitioning end is located at the second working position, the partitioning end is located under the integrated transmission channel, the cardboards move through the integrated transmission channel, and the printing end prints the cardboards in the integrated transmission channel.

[0007] In an optional example, the partition unit includes a partition base fixedly connected to the frame, a partition telescopic cylinder is fixed to the lower end of the partition base, the partition end includes a partition bracket, the partition bracket is vertically connected to the partition base by sliding, and the telescopic end of the partition telescopic cylinder is fixedly connected to the partition bracket.

[0008] In an optional example, a separation driving shaft and a separation driven shaft are fixed on the separation bracket by rotation, an active bracket is fixed on the outer wall of the separation driving shaft, and a driven bracket is fixed on the outer wall of the separation driven shaft. Two groups of symmetrically arranged pushing brackets are installed between the active bracket and the driven bracket by rotational connection. The active bracket, the driven bracket and the pushing bracket are combined to form a parallelogram mechanism. A pushing plate that can move toward or away from the split transmission channel is fixed on the pushing bracket. A power assembly is installed on the separation base. The power assembly is drivingly connected to the separation driving shaft and is used to rotate the separation driving shaft.

[0009] In an optional example, the power assembly includes a power motor, a driven gear, a driven ring, a power gear and a power shaft. The power motor is fixedly connected to the partition base, the power gear is fixed on the output shaft of the power motor, the driven ring is connected to the partition base by rotation, the rotation center line of the driven ring is arranged vertically, the driven ring is fixedly connected to the driven gear, the driven gear is meshed with the power gear, the driven gear has a spline groove passing through the driven gear, the power shaft is inserted into the spline groove by sliding, and is drivingly connected to the spline groove by a key connection, the top of the power shaft is fixedly connected to the partition driving shaft, and is used to drive the partition driving shaft to rotate.

[0010] In an optional example, an elastic connecting piece is fixed to the top of the power shaft, and the elastic connecting piece is connected to the lower end of the separating active shaft. The elastic connecting piece includes a connecting seat, an elastic driving plate and a fixing ring. The connecting seat is fixedly connected to the lower end of the separating active shaft, and the elastic driving plate is fixedly connected to the top of the power shaft. The elastic driving plate has a plurality of extensions extending toward four sides, and a plurality of extensions matching the extensions are provided at one end of the connecting seat toward the elastic driving plate. The fixing ring is fixedly connected to the connecting seat, and the extension is fixed in the connecting slot.

[0011] In an optional example, the transmission component includes a transmission bracket fixedly connected to the frame, the transmission bracket is provided with a side limit end toward the end away from the partition unit, the pushing plate can push the cardboard to move toward the corresponding side limit end, and a transmission driving shaft and a transmission driven shaft are fixed to the transmission bracket by a rotational connection, a plurality of driving pulleys are fixed on the outer wall of the transmission driving shaft along the axial direction of the transmission driving shaft, a plurality of driven pulleys are fixed on the outer wall of the transmission driven shaft along the axial direction of the transmission driven shaft, a transmission belt is fixed between the driving pulley and the driven pulley, a transmission motor is fixed on the transmission bracket, the output shaft of the transmission motor is drivingly connected to the transmission driving shaft, and the driven pulleys are combined to form a split transmission channel.

[0012] In an optional example, the transmission bracket includes a first side bracket, a second side bracket and a connecting bracket connecting the two, a first sliding frame is installed on the first side bracket by sliding, a second sliding frame is installed on the second side bracket by sliding, the transmission driving shaft is connected to the first side bracket and the second side bracket by a bearing connection, the transmission driven shaft is connected to the first sliding frame and the second sliding frame by a bearing connection, the transmission motor is fixedly connected to the first side bracket, and a connecting rod for connection is fixed between the first sliding frame and the second sliding frame.

[0013] In an optional example, a first adjusting screw is rotatably mounted on the first sliding frame, a first flange is provided at an end of the first side bracket facing away from the second side bracket, a first threaded hole is provided on the first flange, the first adjusting screw is rotatably inserted into the first threaded hole by means of a threaded connection, and a first locking nut is threadedly mounted on an outer wall of the first adjusting screw.

[0014] In an optional example, the horizontal height of the upper end surface of the second side bracket is lower than the conveying height of the split transmission channel.

[0015] In an optional example, the support unit includes a negative pressure block, which is fixedly connected to the frame, and the negative pressure support end is arranged at the upper end of the negative pressure block. A plurality of negative pressure flow channels are opened in the negative pressure block, and the negative pressure flow channels have a plurality of negative pressure holes, and the negative pressure holes are opened on the negative pressure support end.

[0016] The beneficial effect of the present invention is that through the cooperation of the split transmission channel, the partition unit and the printing unit, small-sized cardboard is moved and printed, thereby realizing the synchronous printing of two groups of small-sized cardboards, reducing the printing time of small-sized cardboards, and the two groups of split transmission channels can be combined to form an integrated transmission channel, which can move large-sized cardboards, and print large-sized cardboards through cooperation with the printing unit, thereby realizing rapid printing of cardboards of multiple specifications, and improving the use range of cardboard printing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view of an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of a partition unit in an embodiment of the present invention being located at a first working position;

[0021] Figure 4 is a schematic diagram of a partition unit in an embodiment of the present invention being located at a second working position;

[0022] Figure 5 It is a front view of a separation unit in an embodiment of the present invention;

[0023] Figure 6Schematic diagram of the three-dimensional structure of the separation unit in an embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the explosion structure of the separation unit in an embodiment of the present invention;

[0025] Figure 8 It is a schematic diagram of the exploded structure of the elastic connecting member in an embodiment of the present invention;

[0026] Fig. 9 Schematic diagram of the installation structure of the elastic driving sheet in an embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the transmission component in an embodiment of the present invention;

[0028] Fig.11 It is a schematic diagram of the exploded structure of the transmission component in an embodiment of the present invention;

[0029] Fig.12 is a schematic diagram of the three-dimensional structure of a support unit in an embodiment of the present invention;

[0030] Fig.13 It is a schematic diagram of the three-dimensional structure of the printing unit in an embodiment of the present invention.

[0031] The markings in the figure are: 1. frame; 101. workbench; 2. support unit; 201. negative pressure support end; 21. negative pressure block; 211. negative pressure flow channel; 3. separation unit; 301. separation end; 31. separation base; 32. separation telescopic cylinder; 33. separation bracket; 34. guide ring; 35. sliding column; 36. separation active shaft; 37. separation driven shaft; 38. active bracket; 39. driven bracket; 310. pushing bracket; 311. pushing plate; 312. power motor; 313. driven gear; 314. driven ring; 315. power gear; 316. power shaft; 317. connecting seat; 3171. connecting slot; 318. elastic drive sheet; 3181. extension; 319. fixing ring; 4. transmission component; 401. split transmission channel ;402, integrated transmission channel;403, side limit end;41, transmission bracket;411, first side bracket;4111, first flange;4112, first threaded hole;412, second side bracket;413, first sliding frame;414, second sliding frame;415, connecting rod;416, first adjusting screw;417, first locking nut;418, connecting bracket;42, transmission driving shaft;43, transmission driven shaft;44, driving pulley;45, driven pulley;46, transmission belt;47, transmission motor;5, printing unit;501, printing end;51, sliding platform;52, printing support frame;53, printing guide rail;54, sliding block;55, printing screw;56, driving nut;57, printing motor;58, printing bracket. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] In one embodiment, see Figures 1 to 4 As shown, a cardboard printing device provided by the present invention includes: a frame 1, a supporting unit 2, a partition unit 3, a transmission unit and a printing unit 5.

[0035] The rack 1 has a workbench 101 as a carrier of the equipment.

[0036] The support unit 2 is fixed to the upper end of the workbench 101 and has a negative pressure support end 201 for supporting the paperboard. The negative pressure support end 201 is connected to an external negative pressure device, and the negative pressure device is used to provide negative pressure so that the paperboard can be adsorbed on the negative pressure support end 201 for fixation, providing conditions for stable printing of the paperboard.

[0037] The partition unit 3 is fixedly connected to the workbench 101 and has a partition end 301 that can move vertically. The partition end 301 has a first working position and a second working position.

[0038] The transmission unit has two groups of transmission components 4 fixedly connected to the frame 1, and the transmission components 4 are fixed to the upper end of the workbench 101. The transmission components 4 are symmetrically arranged with the partition unit 3 as the midline, and the transmission components 4 have a split transmission channel 401 for driving the cardboard to move, and the two groups of split transmission channels 401 are combined to form an integrated transmission channel 402. Among them, the horizontal height of the negative pressure support end 201 is lower than or equal to the horizontal height of the split transmission channel 401, and the cardboard with smaller specifications is moved through the split transmission channel 401, and the cardboard with larger specifications is moved through the integrated transmission channel 402, thereby realizing the movement and fixation of cardboards of different specifications.

[0039] The printing unit 5 is fixed to the upper end of the workbench 101, and has a printing end 501 that can move in a direction perpendicular to the integrated transmission channel 402. The moving path of the printing end 501 is the printing area.

[0040] When the partition end 301 is located at the first working position, the partition end 301 is located in the integrated transmission channel 402, the two groups of cardboards move through the symmetrical split transmission channel 401, and the printing end 501 independently prints the cardboards in the split transmission channel 401; when the partition end 301 is located at the second working position, the partition end 301 is located under the integrated transmission channel 402, the cardboards move through the integrated transmission channel 402, and the printing end 501 prints the cardboards in the integrated transmission channel 402.

[0041] Since the printing area required on the paperboard surface is relatively large, the printing end 501 needs to move back and forth for many times, and the paperboard can only move forward a certain distance each time to wait for the next printing until the pattern is completely printed.

[0042] The printing process of small-size cardboard: the partition end 301 is located at the first working position, the two groups of cardboards are placed in the independent split transmission channels 401 respectively, and the two groups of transmission components 4 work to move the two groups of cardboards to the printing area; the printing unit 5 works, and the printing end 501 moves to one group of transmission components 4 to print the cardboard therein once; after one printing is completed, the printing end 501 moves to another group of transmission components 4 to print the cardboard therein once, and the transmission component 4 that has completed the printing synchronously works to drive the cardboard to move a set distance and wait for the second printing; the printing end 501 moves to the initial position, repeats the above steps, and the other group of transmission components 4 that are synchronized work to move the cardboard therein a set distance and wait for the second printing, and so on until the printing is completed.

[0043] Printing process of large-size cardboard: the partition end 301 is located at the second working position, the transmission unit is working, the cardboard is moved to the printing area through the integrated transmission channel 402, and the printing end 501 moves to print the cardboard once; after one printing is completed, the transmission unit works, moves the cardboard a set distance, waits for the second printing, and so on until the printing is completed.

[0044] In summary, this example moves and prints small-sized cardboard through the cooperation of the split transmission channel 401, the partition unit 3 and the printing unit 5, thereby realizing the synchronous printing of two groups of small-sized cardboards and reducing the printing time of small-sized cardboards. In addition, the two groups of split transmission channels 401 can be combined to form an integrated transmission channel 402, which can move large-sized cardboards and print large-sized cardboards through cooperation with the printing unit 5, thereby realizing the rapid printing of cardboards of multiple specifications and improving the scope of use of cardboard printing equipment.

[0045] In an alternative example, see Figures 1 to 9 As shown, in order to facilitate the assembly of the partition unit 3, the partition unit 3 includes a partition base 31 fixedly connected to the frame 1 by bolt connection, a partition telescopic cylinder 32 is fixed to the lower end of the partition base 31 by bolt connection, and the partition end 301 includes a partition bracket 33, the partition bracket 33 is vertically connected to the partition base 31 by sliding, and the telescopic end of the partition telescopic cylinder 32 is fixedly connected to the partition bracket 33. Among them, the partition base 31 is installed with a guide ring 34 by bolt connection, and a sliding column 35 is fixed to the lower end of the partition bracket 33. The sliding column 35 is slidably inserted in the guide ring 34 and can move vertically; the partition telescopic cylinder 32 can be driven by hydraulic, pneumatic or electric means.

[0046] Specifically, this example uses the partition base 31 as the bearing structure of the partition unit 3, which can facilitate the disassembly and assembly of the partition unit 3. At the same time, through the operation of the partition telescopic cylinder 32, the telescopic end of the partition telescopic cylinder 32 drives the partition bracket 33 to move, thereby realizing the switching of the partition bracket 33 between the first working position and the second working position.

[0047] In an alternative example, see Figures 1 to 9As shown, in order to ensure the printing quality of the cardboard, a separation driving shaft 36 and a separation driven shaft 37 are fixed on the separation bracket 33 by rotation, an active bracket 38 is fixed on the outer wall of the separation driving shaft 36 by key connection, and a driven bracket 39 is fixed on the outer wall of the separation driven shaft 37 by key connection. Two groups of symmetrically arranged pushing brackets 310 are installed between the active bracket 38 and the driven bracket 39 by rotating shaft connection. The active bracket 38, the driven bracket 39 and the pushing bracket 310 are combined to form a parallelogram mechanism. A pushing plate 311 that can move toward or away from the split transmission channel 401 is fixed on the pushing bracket 310. A power assembly is installed on the separation base 31. The power assembly is connected to the separation driving shaft 36 and is used to rotate the separation driving shaft 36. Among them, two shaft holes are vertically opened on the separation bracket 33, and the separation driving shaft 36 and the separation driven shaft 37 are respectively rotated and inserted into one shaft hole and extend downward.

[0048] Specifically, in this example, the power component is used to drive the separation active shaft 36 to rotate, the separation active shaft 36 drives the active bracket 38 to rotate, the active bracket 38 drives the pushing bracket 310 to move, and the pushing bracket 310 pushes the cardboard to move in the direction away from the separation unit 3 until the cardboard can collide with the edge of the split transmission channel 401, so that the cardboard can be accurately positioned, ensuring the printing accuracy of the cardboard, avoiding the cardboard from running off during multiple printing processes, and reducing the printing quality of the cardboard.

[0049] In an alternative example, see Figures 1 to 9 As shown, in order to facilitate the disassembly and assembly of the power assembly, the power assembly includes a power motor 312, a driven gear 313, a driven ring 314, a power gear 315 and a power shaft 316. The power motor 312 is fixedly connected to the partition base 31 by bolt connection. The power gear 315 is fixed to the output shaft of the power motor 312 by key connection. The driven ring 314 is connected to the lower end of the partition base 31 by bearing connection. The rotation center line of the driven ring 314 is vertically arranged. The driven ring 314 is fixedly connected to the upper end of the driven gear 313 by bolt connection. The driven gear 313 is meshed with the power gear 315. The driven gear 313 has a spline groove running through the driven gear 313. The power shaft 316 is inserted into the spline groove by sliding and is drivingly connected to the spline groove by key connection. The top of the power shaft 316 is fixedly connected to the partition driving shaft 36 by bolt connection and is used to drive the partition driving shaft 36 to rotate.

[0050] Specifically, in this example, through the operation of the power motor 312, the output shaft of the power motor 312 drives the driven gear 313 to rotate, the driven gear 313 drives the power shaft 316 to rotate, and the power shaft 316 drives the separation driving shaft 36 to rotate, providing power for pushing the cardboard, and has the advantages of simple structure and convenient disassembly and assembly.

[0051] In an alternative example, see Figures 1 to 9 As shown, in order to ensure the flatness of the cardboard, an elastic connector is fixed to the top of the power shaft 316, and the elastic connector is connected to the lower end of the separation active shaft 36 by bolt connection. The elastic connector includes a connecting seat 317, an elastic driving sheet 318 and a fixing ring 319. The connecting seat 317 is fixedly connected to the lower end of the separation active shaft 36 by bolt connection. The elastic driving sheet 318 is fixedly connected to the top of the power shaft 316. The elastic driving sheet 318 has a plurality of extensions 3181 extending toward the four sides. The connecting seat 317 is provided with a plurality of connecting slots 3171 matching the extensions 3181 at one end facing the elastic driving sheet 318. The fixing ring 319 is fixedly connected to the connecting seat 317 by bolt connection, and the extensions 3181 are fixed in the connecting slots 3171.

[0052] Specifically, in this example, the elastic connector is used to connect the separation driving shaft 36 and the power shaft 316. When the pushing plate 311 contacts the paperboard, it can absorb a certain torque to avoid excessive pushing force, which would cause frills on the edge of the paperboard, thereby ensuring the flatness of the paperboard.

[0053] In an alternative example, see Figures 1 to 11 As shown, in order to ensure the printing quality of the cardboard, the transmission component 4 includes a transmission bracket 41 fixedly connected to the frame 1 by bolt connection, and a side limit end 403 is provided at the end of the transmission bracket 41 facing away from the partition unit 3, and the pushing plate 311 can push the cardboard to move in the direction of the corresponding side limit end 403. A transmission active shaft 42 and a transmission driven shaft 43 are fixed on the transmission bracket 41 by bearing connection, and a plurality of active pulleys 44 are fixed on the outer wall of the transmission active shaft 42 along the axial direction of the transmission active shaft 42 by key connection, and a plurality of driven pulleys 45 are fixed on the outer wall of the transmission driven shaft 43 along the axial direction of the transmission driven shaft 43 by key connection, and a transmission belt 46 is fixed between the active pulley 44 and the driven pulley 45, and a transmission motor 47 is fixed on the transmission bracket 41, and the output shaft of the transmission motor 47 is fixedly connected to the transmission active shaft 42 by a coupling, and the driven pulley 45 is combined to form a split transmission channel 401. The side limiting end 403 contacts the side edge of the paperboard and is used to locate the position of the paperboard.

[0054] Specifically, in this example, through the operation of the transmission motor 47, the output shaft of the transmission motor 47 drives the transmission active shaft 42 to rotate, the transmission active shaft 42 drives the driving pulley 44 to rotate, the driving pulley 44 drives the transmission belt 46 to move, and the transmission belt 46 drives the cardboard to move, thereby realizing independent transportation of the cardboard, and positioning the cardboard in the split transmission channel 401 through the side limit end 403, avoiding the cardboard from being offset in the split transmission channel 401, thereby ensuring the printing quality of the cardboard.

[0055] In an alternative example, see Figures 1 to 11 As shown, in order to facilitate the disassembly and assembly of the transmission component 4, the transmission bracket 41 includes a first side bracket 411, a second side bracket 412 and a connecting bracket 418 connecting the two, a first sliding frame 413 is installed on the first side bracket 411 by sliding, and a second sliding frame 414 is installed on the second side bracket 412 by sliding, the transmission active shaft 42 is connected to the first side bracket 411 and the second side bracket 412 by bearing connection, the transmission driven shaft 43 is connected to the first sliding frame 413 and the second sliding frame 414 by bearing connection, the transmission motor 47 is fixedly connected to the first side bracket 411 by bolt connection, and a connecting rod 415 for connection is fixed between the first sliding frame 413 and the second sliding frame 414. Among them, the connecting bracket 418 is connected to the first side bracket 411 and the second side bracket 412 by means of bolt connection; a sliding groove is provided on the first side bracket 411, and the first sliding frame 413 is slidably inserted in the first sliding groove; a side guide rail is fixed on the second side bracket 412, and a side slider is fixed on the second sliding frame 414, and the side slider is slidably mounted on the outer wall of the side guide rail; the connecting rod 415 is fixedly connected to the first sliding frame 413 and the second sliding frame 414 by means of bolt connection.

[0056] Specifically, this example reduces the difficulty of installing the transmission bracket 41 by splitting the transmission bracket 41 into three parts, facilitates the disassembly and assembly of the transmission component 4, and improves the disassembly and assembly efficiency of the transmission component 4.

[0057] In an alternative example, see Figures 1 to 11As shown, in order to further ensure the printing quality of the paperboard, a first adjusting screw 416 is installed on the first sliding frame 413 by means of rotation, a first flange 4111 is provided at one end of the first side bracket 411 facing away from the second side bracket 412, a first threaded hole 4112 is provided on the first flange 4111, the first adjusting screw 416 is rotatably inserted into the first threaded hole 4112 by means of threaded connection, and a first locking nut 417 is sleeved on the outer wall of the first adjusting screw 416 by means of threaded connection. Among them, a rotating hole is provided on the first sliding frame 413, one end of the first adjusting screw 416 is rotatably inserted into the rotating hole, and an adjusting bump is provided at the other end of the first adjusting screw 416; the first locking nut 417 fixes the first adjusting screw 416 by means of interference with the first flange 4111.

[0058] Specifically, in this example, the operator rotates the first adjusting screw 416, and the first adjusting screw 416 drives the first sliding frame 413 to move through the cooperation of the thread, and the first sliding frame 413 drives the connecting rod 415 and the second sliding frame 414 to move, and the second sliding frame 414 drives the driven pulley 45 to move, thereby adjusting the tension of the transmission belt 46, so that the cardboard can move stably, avoiding the cardboard from being offset in the split transmission channel 401, and ensuring the printing quality of the cardboard.

[0059] In an alternative example, see Figures 1 to 11 As shown, in order to further improve the stability of cardboard transportation, the horizontal height of the upper end surface of the second side bracket 412 is lower than the transportation height of the split transmission channel 401.

[0060] Specifically, during the printing process, the large-size cardboard needs to be moved along the direction of the integrated transmission channel 402. The horizontal height of the upper end surface of the second side bracket 412 is lower than the conveying height of the separate transmission channel 401. When the two groups of separate transmission channels 401 are combined to form the integrated transmission channel 402, interference with the movement of the large-size cardboard can be avoided, thereby ensuring the stability of the cardboard conveying.

[0061] In an alternative example, see Figures 1 to 12 As shown, the support unit 2 includes a negative pressure block 21, which is fixedly connected to the frame 1, and a negative pressure support end 201 is arranged at the upper end of the negative pressure block 21. The negative pressure block 21 has multiple groups of negative pressure channels 211 penetrating the negative pressure block 21, and the negative pressure channels 211 have a plurality of negative pressure holes, which are arranged on the negative pressure support end 201. The negative pressure channels 211 are connected to an external negative pressure device, and the negative pressure device is used to provide negative pressure.

[0062] Specifically, in this example, the cardboard is adsorbed by multiple groups of negative pressure channels 211, so that the cardboard can be adsorbed on the negative pressure support end 201 at any stop position, thereby ensuring the stability of the cardboard during printing and further ensuring the printing quality of the cardboard.

[0063] In an alternative example, see Figures 1 to 13 As shown, the printing unit 5 includes a sliding platform 51 and a printing support frame 52 fixed to the upper end of the workbench 101, the printing support frame 52 is equipped with a printing guide rail 53 along the length direction, and a sliding block 54 is slidably mounted on the outer wall of the printing guide rail 53, and the sliding block 54 is fixedly connected to the sliding platform 51 by bolt connection. A printing screw 55 is installed in the printing support frame 52 along the length direction by bearing connection, a driving nut 56 is fixed on the sliding platform 51, and the driving nut 56 is mounted on the outer wall of the printing screw 55 by threaded connection, a printing motor 57 is fixed to the printing support frame 52 by bolt connection, and the output shaft of the printing motor 57 is fixedly connected to one end of the printing screw 55 by a coupling, a printing bracket 58 is fixed to the printing support frame 52 by bolt connection, and the printing end 501 includes a plurality of printing nozzles, and the printing nozzles are fixedly mounted on the printing bracket 58 by bolt connection along the width direction. The printing guide rail 53 is fixedly connected to the printing support frame 52 by bolt connection; the printing nozzle is connected to an external liquid supply device, and the liquid supply device is used to provide ink.

[0064] Specifically, in this example, through the operation of the print motor 57, the output shaft of the print motor 57 drives the print screw 55 to rotate, the print screw 55 drives the drive nut 56 to move, the drive nut 56 drives the sliding platform 51 to move, and the sliding platform 51 drives the print nozzle to move, thereby realizing the printing and spraying of the cardboard and ensuring the printing quality of the cardboard.

[0065] In general, the present invention realizes printing on cardboards of different specifications through the cooperation of the split transmission channel 401, the partition unit 3 and the printing unit 5, thereby improving the application range of the cardboard printing equipment. At the same time, a pushing bracket 310 capable of pushing the cardboard to move is added, so that the cardboard can be accurately positioned, ensuring the printing accuracy of the cardboard, avoiding the deviation of the cardboard during multiple printing processes and reducing the printing quality of the cardboard, and adding an elastic connecting piece that can absorb a certain torque, avoiding excessive driving force and causing frills on the edge of the cardboard, thereby ensuring the flatness of the cardboard.

[0066] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0067] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cardboard printing device, characterized in that: include: Rack (1); A support unit (2) fixedly connected to the frame (1) and having a negative pressure support end (201) for supporting paperboard; A partition unit (3) is fixedly connected to the frame (1) and has a partition end (301) that can move vertically, and the partition end (301) has a first working position and a second working position; A transmission unit, comprising two groups of transmission components (4) fixedly connected to the frame (1), the transmission components (4) being symmetrically arranged with the partition unit (3) as the midline, the transmission component (4) having a split transmission channel (401) for driving the cardboard to move, the two groups of the split transmission channels (401) being combined to form an integrated transmission channel (402); A printing unit (5) fixedly connected to the frame (1) and having a printing end (501) capable of moving in a direction perpendicular to the integrated transmission channel (402); When the partition end (301) is located at the first working position, the partition end (301) is located in the integrated transmission channel (402), the two groups of paperboards move through the split transmission channel (401), and the printing end (501) independently prints the paperboards in the split transmission channel (401); When the partition end (301) is located at the second working position, the partition end (301) is located under the integrated transmission channel (402), the cardboard moves through the integrated transmission channel (402), and the printing end (501) prints on the cardboard in the integrated transmission channel (402).

2. The cardboard printing device according to claim 1, characterized in that: The partition unit (3) comprises a partition base (31) fixedly connected to the frame (1); a partition telescopic cylinder (32) is fixed to the lower end of the partition base (31); the partition end (301) comprises a partition bracket (33); the partition bracket (33) is vertically connected to the partition base (31) by sliding; and the telescopic end of the partition telescopic cylinder (32) is fixedly connected to the partition bracket (33).

3. The cardboard printing device according to claim 2, characterized in that: A separation active shaft (36) and a separation driven shaft (37) are fixed on the separation bracket (33) in a rotatable manner; an active bracket (38) is fixed on the outer wall of the separation active shaft (36); a driven bracket (39) is fixed on the outer wall of the separation driven shaft (37); two groups of symmetrically arranged pushing brackets (310) are installed between the active bracket (38) and the driven bracket (39) in a rotatable connection manner; the active bracket (38), the driven bracket (39) and the pushing bracket (310) are combined to form a parallelogram mechanism; a pushing plate (311) capable of moving toward or away from the split transmission channel (401) is fixed on the pushing bracket (310); a power assembly is installed on the separation base (31); the power assembly is drivingly connected to the separation active shaft (36) and is used to rotate the separation active shaft (36).

4. The cardboard printing device according to claim 3, characterized in that: The power assembly comprises a power motor (312), a driven gear (313), a driven ring (314), a power gear (315) and a power shaft (316); the power motor (312) is fixedly connected to the partition base (31); the power gear (315) is fixed to the output shaft of the power motor (312); the driven ring (314) is connected to the partition base (31) by rotation; the rotation center line of the driven ring (314) is arranged vertically; 314) is fixedly connected to the driven gear (313), the driven gear (313) is meshed with the power gear (315), the driven gear (313) has a spline groove penetrating the driven gear (313), the power shaft (316) is inserted into the spline groove by sliding, and is drivingly connected to the spline groove by key connection, the top of the power shaft (316) is fixedly connected to the separation driving shaft (36), and is used to drive the separation driving shaft (36) to rotate.

5. The cardboard printing device according to claim 4, characterized in that: An elastic connecting piece is fixed to the top of the power shaft (316), and the elastic connecting piece is connected to the lower end of the separation driving shaft (36). The elastic connecting piece includes a connecting seat (317), an elastic driving sheet (318) and a fixing ring (319). The connecting seat (317) is fixedly connected to the lower end of the separation driving shaft (36), and the elastic driving sheet (318) is fixedly connected to the top of the power shaft (316). The elastic driving sheet (318) has a plurality of extensions (3181) extending toward four sides. A plurality of extensions (3181) matching with the extensions (3181) are provided at one end of the connecting seat (317) facing the elastic driving sheet (318). The fixing ring (319) is fixedly connected to the connecting seat (317), and the extension (3181) is fixed in the connecting slot (3171).

6. The cardboard printing device according to claim 5, characterized in that: The transmission assembly (4) comprises a transmission bracket (41) fixedly connected to the frame (1); a side limit end (403) is provided at one end of the transmission bracket (41) facing away from the partition unit (3); the pushing plate (311) can push the cardboard to move in the direction of the corresponding side limit end (403); a transmission driving shaft (42) and a transmission driven shaft (43) are fixed to the transmission bracket (41) in a rotationally connected manner; an outer wall of the transmission driving shaft (42) is provided along the transmission driving shaft (42); A plurality of driving pulleys (44) are fixed axially, a plurality of driven pulleys (45) are fixed on the outer wall of the transmission driven shaft (43) along the axial direction of the transmission driven shaft (43), a transmission belt (46) is fixed between the driving pulley (44) and the driven pulley (45), a transmission motor (47) is fixed on the transmission bracket (41), the output shaft of the transmission motor (47) is drivingly connected to the transmission driving shaft (42), and the driven pulleys (45) are combined to form a split transmission channel (401).

7. The cardboard printing device according to claim 6, characterized in that: The transmission bracket (41) comprises a first side bracket (411), a second side bracket (412) and a connecting bracket (418) connecting the two. A first sliding frame (413) is mounted on the first side bracket (411) in a sliding manner. A second sliding frame (414) is mounted on the second side bracket (412) in a sliding manner. The transmission driving shaft (42) is connected to the first side bracket (411) and the second side bracket (412) in a bearing connection manner. The transmission driven shaft (43) is connected to the first sliding frame (413) and the second sliding frame (414) in a bearing connection manner. The transmission motor (47) is fixedly connected to the first side bracket (411). A connecting rod (415) for connection is fixed between the first sliding frame (413) and the second sliding frame (414).

8. The cardboard printing device according to claim 7, characterized in that: A first adjusting screw (416) is rotatably mounted on the first sliding frame (413); a first flange (4111) is provided on the end of the first side bracket (411) facing away from the second side bracket (412); a first threaded hole (4112) is provided on the first flange (4111); the first adjusting screw (416) is rotatably inserted into the first threaded hole (4112) by means of a threaded connection; a first locking nut (417) is mounted on the outer wall of the first adjusting screw (416) by means of a threaded connection.

9. The cardboard printing device according to claim 8, characterized in that: The horizontal height of the upper end surface of the second side bracket (412) is lower than the conveying height of the split transmission channel (401).

10. The cardboard printing device according to claim 1, characterized in that: The support unit (2) comprises a negative pressure block (21), the negative pressure block (21) is fixedly connected to the frame (1), the negative pressure support end (201) is arranged at the upper end of the negative pressure block (21), a plurality of negative pressure flow channels (211) are provided in the negative pressure block (21), the negative pressure flow channels (211) have a plurality of negative pressure holes, and the negative pressure holes are provided on the negative pressure support end (201).

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