CN115489195A

CN115489195A - Multicolor printing production line and printing method

Info

Publication number: CN115489195A
Application number: CN202211093990.9A
Authority: CN
Inventors: 李光建; 王常青
Original assignee: Dongguan Jiahua Automation Technology Co ltd
Current assignee: Dongguan Jiahua Automation Technology Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-12-20

Abstract

The invention relates to the technical field of printing machinery, in particular to a multicolor printing production line and a printing method, which comprises a rack, wherein a plurality of printing tables for placing products are connected to the rack in a sliding manner; the printing tables are combined into a closed and linked oval conveying line, and a plurality of stand columns are linearly arranged in the conveying line; the printing device comprises a stand column, printing devices, a positioning device and a positioning device, wherein the stand column is fixedly installed on the rack, the printing devices are symmetrically installed on two sides of the stand column, the printing devices can be connected to the stand column in a turnover mode, the positioning device for locking the printing table is arranged under each printing device, the printing table is positioned and locked through the positioning device, and the positioning device is used for positioning and locking the printing table before the printing device prints a product. Meanwhile, an operator is prevented from carrying out secondary positioning and positioning on the product, the printing quality is improved, and the labor cost is reduced.

Description

Multicolor printing production line and printing method

Technical Field

The invention relates to the technical field of printing machinery, in particular to a multicolor printing production line and a printing method.

Background

The screen printing belongs to stencil printing, and the principle of stencil printing is that printing ink is transferred to a printing stock (paper, ceramic and the like) through holes of a stencil by certain pressure to form images or characters when a printing plate (the stencil or a printing base of other stencils is provided with holes which can pass through the printing ink) is printed.

The silk-screen printing production line for multicolor silk-screen printing disclosed in the Chinese patent with the application number of CN202023176377.2 comprises a head end printing table, a tail end printing table and a middle printing table, wherein one side of the head end printing table is connected with the middle printing table through a connecting assembly, one side of the middle printing table, which is far away from the head end printing table, is connected with the tail end printing table through a connecting assembly, the head end printing table, the top of the tail end printing table and the top of the middle printing table are fixedly provided with a conveying assembly and a limiting mechanism, the head end printing table, the top of the tail end printing table and the top of the middle printing table are fixedly provided with silk-screen printing stations, a film arranging station, a drying station and a slicing station, one side of the head end printing table top, which is far away from the middle printing table, is also fixedly provided with a feeding station, one side of the tail end printing table top, which is far away from the middle printing table, is also fixedly provided with a blanking station, and the silk-screen printing production line has the advantages that: the printing production line polychrome silk screen printing unit modular design, the compactness is better, carries in succession, and the production line is more high-efficient, goes up the unloading convenience, and the production line is carried spacingly, and is stable, the precision is better. Adopt above-mentioned scheme can solve the problem of continuous printing effectively, but all need carry out independent adjustment to the silk screen printing otter board on the silk screen printing station in need changing the product or acquainting the product, need change the silk screen printing otter board and just can continue to print after shutting down in the acquainting the product of the different colours of the same pattern that needs printing.

The full-automatic touch screen printing machine disclosed in the Chinese invention patent with the application number of CN201310556452.3 comprises a base and a workbench, wherein a plurality of groups of workbenches are mounted on the base, are in sliding fit with the base and accurately drive a touch screen to a specified processing procedure through a divider; the feeding device comprises a mechanical arm and a CCD detection device arranged on the mechanical arm; at least two groups of processing devices, wherein the processing devices comprise a screen printing device and a servo positioning device; the servo position adjusting device is installed on the screen printing device, and the screen printing device is adjusted through the touch screen position fed back by the CCD detection device, so that the screen printing device is guaranteed to be over against a processing position. The invention has the beneficial effects that: realize full automatic production technology, the processingequipment that many sets of silk screen printing were dried simultaneously can realize realizing polychrome chromatography in a production line, has greatly improved production efficiency, has greatly reduced manufacturing cost. By adopting the scheme, the positions of the silk screen plates are constantly checked through the CCD detection device and are timely adjusted to ensure the printing quality. But the screen printing screen plate on the screen printing station is required to be independently adjusted when a product is required to be replaced or a recognition product is required to be replaced, and the screen printing screen plate can be continuously printed only after the machine is stopped when the recognition product with the same pattern and different colors is required to be printed.

Disclosure of Invention

In order to solve the problems, the invention provides a multicolor printing production line and a printing method, wherein a positioning device is used for positioning and locking a printing table, the positioning device is used for positioning and locking the printing table before a product is printed by the printing device, an operator is prevented from performing secondary positioning and positioning on the product, the printing quality is improved, the labor cost is reduced, a plurality of printing tables are closed and linked, one or more printing devices are required to be rotated when similar products are produced, and printing devices with different colors are added without shutdown debugging. Thereby enhancing the flexibility of the apparatus during operation and improving the efficiency of continuous printing.

Another object of the present invention is to provide a multicolor printing production line and a printing method thereof, wherein since the printing device can be turned over, when printing similar products, the printing device corresponding to the printing color not required to be printed is turned over to maintain a certain included angle relationship with the upright post, and the printing color required to be printed is installed on another printing device. It is possible to start printing similar products. The printing device corresponding to the printing color is turned over without the need of printing, and residual printing ink on the screen printing screen plate can be ensured to drip onto a product through meshes on the screen printing screen plate.

It is still another object of the present invention to provide a multicolor printing line and a printing method, in which the exteriors of the front and rear clamping devices are adjustable in all of the three directions X, Y and Z, so that only by adjusting the exteriors of the front and rear clamping devices of the first printed pattern, the exteriors of the subsequent front and rear clamping devices are adjusted according to the positions of the first front and rear clamping devices. The preparation work before printing is shortened. Thereby realizing the alignment-free of the subsequent printing stations.

In order to achieve the purpose, the invention adopts the technical scheme that: a multicolor printing production line comprises a frame, wherein a plurality of printing tables for placing products are connected to the frame in a sliding manner; the printing tables are combined into a closed and linked oval conveying line, and a plurality of stand columns are linearly arranged in the conveying line; the printing device comprises a stand column, printing devices, a positioning device and a printing table, wherein the stand column is fixedly arranged on the rack, the printing devices are symmetrically arranged on two sides of the stand column, the printing devices can be connected to the stand column in a turnover mode, and the positioning device for locking the printing table is arranged under each printing device.

Preferably, the rack is further provided with a driving mechanism for driving the plurality of printing tables to move, the driving mechanism comprises a linkage device connected to the rack in a sliding manner and a power device for driving the linkage device to move, the linkage device comprises a closed elliptical guide rail fixedly mounted on the rack, the guide rail is connected with connecting plates in the same number as the number of the printing tables in a sliding manner, a connecting block is rotatably connected between every two adjacent connecting plates, the power device comprises a power seat mounted on the rack, two chain wheels are linearly arranged on the power seat, and double-row chains are sleeved on the two chain wheels; one side of the connecting plate is provided with a rack matched with the double-row chain, the other side of the connecting plate is rotatably provided with two positioning columns, and a positioning clamping groove in coupling connection with the positioning device is arranged between the two positioning columns.

Preferably, the positioning device comprises a positioning plate vertically mounted on the rack, a cylinder seat and a positioning seat are fixedly mounted on two sides of the positioning plate, an upper positioning rod is rotatably mounted in the positioning seat, a driving cylinder is horizontally mounted in the cylinder seat, and one end of the positioning rod penetrates through the positioning plate and is fixedly connected with the output end of the driving cylinder; the other end of the positioning rod is provided with a clamping part matched with the positioning clamping groove.

Preferably, the printing table comprises a printing seat which is slidably mounted on the machine frame, and a placing plate for placing a product is fixedly mounted at one end of the printing seat; the other end of the printing seat is fixedly provided with a supporting wheel, the rack is also provided with a sliding chute matched with the supporting wheel and a supporting device for supporting the printing seat, and the supporting device and the sliding chute are oppositely arranged at two sides of the driving mechanism and are positioned below the printing device; the sliding groove is positioned on the inner side of the guide rail and below the upright post; the supporting device comprises a supporting seat fixedly mounted on the rack, a supporting cylinder is vertically mounted on the supporting seat, and a supporting rod is fixedly mounted at the output end of the supporting cylinder.

Preferably, the printing device comprises a support frame which is rotatably connected to an upright column, and a front clamping device and a rear clamping device which are fixedly arranged at two ends of the bottom of the support frame, wherein ink scraping devices are arranged on supports of the front clamping device and the rear clamping device, the ink scraping devices are slidably arranged on the support frame, a fixing frame for installing a silk-screen printing plate is fixedly arranged between the front clamping device and the rear clamping device, a sliding device and a transmission device are arranged in the support frame, and the sliding device comprises support rods which are fixedly arranged in the support frame and are arranged in parallel; two be equipped with the sliding seat between the bracing piece, transmission includes the belt pulley of fixed mounting at the support frame both ends, two the cover is equipped with the toothed belt on the belt pulley, the middle part of sliding seat be equipped with toothed belt adaptation dogtooth, the tip of support frame is equipped with fixed mounting and drives the motor, the output that drives the motor with belt pulley transmission is connected.

Preferably, the driving device comprises a connecting frame connected between the support frame and the upright post, a connecting cylinder is fixedly installed at one end of the connecting frame, and the output end of the connecting cylinder is connected with the upright post; the other end of the connecting frame is provided with two connecting pins, a connecting shaft is fixedly connected between the two connecting pins, a U-shaped seat is fixedly installed on the supporting frame, and the connecting shaft is movably connected in the U-shaped seat; and a locking plate is rotatably arranged in the U-shaped seat, and a plurality of locking grooves matched with the connecting shaft are formed in two sides of the locking plate.

Preferably, the front clamping device comprises a front fixing seat fixedly mounted on the support frame, a front connecting seat is slidably mounted on the front fixing seat, a Y-axis cylinder for driving the front connecting seat to move in the front-back direction is arranged in the front fixing seat, a front clamping seat is slidably connected to the front connecting seat, a front Z-axis handle for driving the front clamping seat to move in the up-down direction is arranged in the front connecting seat, a front clamping plate is slidably mounted on the front clamping seat, and a front X-axis thrust rod for driving the front clamping plate to move in the left-right direction is arranged at one end of the front clamping seat.

Preferably, the rear clamping device comprises a rear fixed seat fixedly mounted on the support frame, a rear connecting seat is slidably mounted on the rear fixed seat, a rear Y-axis handle for driving the rear connecting seat to move in the front-rear direction is arranged on the rear fixed seat, a rear clamping seat is slidably connected on the rear connecting seat, a rear Z-axis handle for driving the rear clamping seat to move in the up-down direction is arranged in the rear connecting seat, a rear clamping plate is slidably mounted on the rear clamping seat, and a rear X-axis thrust rod for driving the rear clamping plate to move in the left-right direction is arranged at one end of the rear clamping seat; and rotary cylinders for clamping the fixing frame are fixedly mounted at two ends of the rear clamping seat.

Preferably, the ink scraping device comprises a printing plate which is slidably mounted on a support frame, an ink jet connecting plate and an ink scraping connecting plate are mounted right below the printing plate in parallel, fine adjusting devices are mounted at two ends of the ink jet connecting plate and two ends of the ink scraping connecting plate, each fine adjusting device comprises a fine adjusting seat mounted on the printing plate, a fine adjusting handle and a fine adjusting shaft fixedly connected with the fine adjusting handle are rotatably mounted in the fine adjusting seat, each ink jet connecting plate comprises an ink jet seat adjustably connected with the fine adjusting shaft, an ink jet plate is detachably connected to the bottom of the ink jet seat, a plurality of ink jet tubes are arranged on the ink jet plate, each ink scraping connecting plate comprises an ink scraping seat adjustably connected with the fine adjusting shaft, and an ink scraping plate is detachably connected to the ink scraping seat.

A method of printing comprising the steps of: s1, adjusting a rear clamping device on a printing device in three directions of an X axis, a Y axis and a Z axis and recording numerical values displayed in the two directions of the X axis and the Z axis;

s2, adjusting the front clamping device on the printing device in the X-axis direction and the Z-axis direction according to the recorded numerical values, wherein the numerical values of the front clamping device on the printing device in the X-axis direction and the Z-axis direction are the same as the numerical values of the rear clamping device on the printing device in the X-axis direction and the Z-axis direction; the fixing frame is fixed between the front clamping device and the rear front clamping device;

s3, manufacturing a silk screen plate to be printed and fixedly installing the silk screen plate in a fixed frame;

s4, placing a product to be printed on a printing table, and correspondingly locking the printing table by a positioning device right below the printing table;

s5, printing the patterns in the silk screen plate on a product by a printing device; after printing, the printing table moves the product under the next printing device.

The invention has the beneficial effects that: 1. the printing table is positioned and locked by the positioning device, and the printing table is positioned and locked by the positioning device before the printing device prints the product. Meanwhile, the operator is prevented from carrying out secondary positioning and positioning on the product, and the printing quality is improved. The labor cost is reduced.

2. Because the printing device can be turned over, when a similar product is printed, the printing device corresponding to the printing color which is not required to be printed is turned over to keep a certain included angle relation with the upright post, and the printing color which is required to be printed is installed on the other printing device. It is possible to start printing similar products. Thus increasing the flexibility of the device during operation. The printing device corresponding to the printing color is turned over, and the residual printing ink on the screen printing screen plate can be ensured to drop onto a product through the meshes on the screen printing screen plate.

3. Because the front clamping device and the rear clamping device are externally arranged and can be adjusted in the X direction, the Y direction and the Z direction, the front clamping device and the rear clamping device of the first printed pattern only need to be externally arranged through adjustment, and the subsequent front clamping device and the subsequent rear clamping device are externally arranged and can be adjusted according to the positions of the first front clamping device and the rear clamping device. The preparation work before printing is shortened. Thereby realizing the alignment-free of the subsequent printing stations.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the drive mechanism of the present invention.

Fig. 3 is an enlarged schematic view of the invention at a.

Fig. 4 is a perspective exploded view of the printing apparatus of the present invention.

FIG. 5 is a cross-sectional view of the front clamping assembly of the present invention.

FIG. 6 is a cross-sectional view of the rear clamping device of the present invention.

The reference numbers illustrate: 1. a frame, 101, a guide rail, 102, a connecting plate, 103, a guide wheel, 104, a guide groove, 105, a connecting column, 106, a connecting block, 107, a guide wheel, 108, a power seat, 109, a chain wheel, 110, a double-row chain, 111, a driving motor, 112, a rack, 113, a positioning column, 114, a positioning clamping groove,

2. a printing table, 201, a printing seat, 202, a placing plate, 203, a chute,

3. the vertical column is provided with a vertical column,

4. printing device, 41 support frame, 42 fixing frame, 43 front clamping device, 44 ink scraping device, 45 rear clamping device, 401 support bar, 402 sliding seat, 403 roller, 404 belt pulley, 405 toothed belt, 406 driving motor, 407 connecting frame, 408 connecting pin, 409 connecting shaft, 410U-shaped seat, 411 locking plate, 413 strip-shaped hole, 414 front fixing seat, 415 cross guide rail, 416 front connecting seat, 417Y-axis cylinder, 418 linear guide rail, 419 front clamping seat, 420 driving rod, 421 front Z-axis handle, 422, a sliding guide rail, 423, a front clamping plate, 424, a transition plate, 425, a front X-axis thrust rod, 426, a rear fixed seat, 427, a rear connecting seat, 428, a rear Y-axis handle, 429, an adjusting rod, 430, a rear clamping seat, 431, a rear Z-axis handle, 432, a rear clamping plate, 433, a rear X-axis thrust rod, 434, a rotating cylinder, 435, a printing plate, 436, a fine adjustment seat, 437, a fine adjustment handle, 438, a fine adjustment shaft, 439, a scraping seat, 442, an adjusting hole, 444, a clamping plate, 445, a locking handle, 446, a scraping plate, 447, an ink jet seat, 448, an ink jet plate,

5. the positioning device comprises a positioning device body, 501 positioning plates, 502 cylinder seats, 503 positioning seats, 504 rotating rods, 505 positioning rods, 506 driving cylinders, 507 through holes and 508 clamping parts.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-6, the present invention relates to a multicolor printing production line, which includes a frame 1, and a plurality of printing tables 2 for placing products are slidably connected to the frame 1. A plurality of printing platforms 2 are combined into a closed and linked oval conveying line, and a plurality of upright posts 3 are linearly arranged in the conveying line. The upright post 3 is fixedly arranged on the frame 1, the printing devices 4 are symmetrically arranged on two sides of the upright post 3, the printing devices 4 are arranged on the upright post 3 in a turnover way, and a positioning device 5 for locking the printing table 2 is arranged under each printing device 4. In the using process, the silk screen plate is fixedly arranged in the printing device 4, the installation position of the silk screen plate is finely adjusted, and a product to be printed is placed on the printing table 2. The apparatus is started and the printing table 2 moves the product to be printed directly below the printing device 4. The positioning device 5 performs positioning locking of the printing table 2 before the printing device 4 prints the product. The printing quality is prevented from being influenced by the displacement of the printing table 2 in the printing process. Since the positioning means 5 can fix the printing table 2 before printing. Therefore, when the product is printed, the accuracy of the printing position is ensured without manually carrying out secondary positioning on the product. Meanwhile, the printing tables 2 can be linked, when multicolor patterns are printed, only silk screen plates without colors are required to be installed on adjacent printing decorations, the whole printing process can be completed, and only one operator is required to place products on the printing tables 2 and take the products off the printing tables 2 in the whole printing process. Compared with the traditional printing process, the efficiency is higher, and the labor cost is lower. Meanwhile, when similar products are printed, for example, products with the same pattern and different colors, because the printing device 4 can be turned over, when the similar products are printed, the printing device 4 corresponding to the product which does not need to be printed is turned over to keep a certain included angle relationship with the upright post 3, and the required printed color is installed on the other printing device 4. It is possible to start printing similar products. Thus increasing the flexibility of the device during operation. The printing device 4 corresponding to the color which does not need to be printed is turned over, and the residual printing ink on the screen printing screen plate can be ensured to drop on the product through the meshes on the screen printing screen plate.

Referring to fig. 2-3, in order to realize that the plurality of printing tables 2 can move and link on the frame 1, a driving mechanism for driving the plurality of printing tables 2 to move is further disposed on the frame 1, the driving mechanism includes a linkage device slidably connected to the frame 1 and a power device for driving the linkage device to move, the linkage device includes a closed oval guide rail 101 fixedly mounted on the frame 1, the guide rail 101 is cylindrical, the number of connecting plates 102 equal to the number of the printing tables 2 are slidably connected to the guide rail 101, and each connecting plate 102 is provided with a printing table 2. The front end and the rear end of the connecting plate 102 are fixedly provided with guide groups with the same structure, each guide group is provided with two guide wheels 103 which are the same in structure and are oppositely arranged, the guide wheels 103 are rotatably arranged on the connecting plate 102 through a rotating shaft and a bearing, the inner ring of the bearing is sleeved on the rotating shaft, and the guide wheels 103 are sleeved on the outer ring of the bearing. And is fixedly arranged on the connecting plate 102 through a rotating shaft in a welding or threaded mode. The guide wheel 103 is provided with a guide groove 104 adapted to the guide rail 101. The guide grooves 104 on the two guide wheels 103 are combined into a guide hole matched with the guide rail 101. By applying a pushing force to the power unit on the link plate 102, the link plate 102 slides on the guide rail 101.

When one of the connecting plates 102 moves on the guide rail 101, the other connecting plates 102 also move at the same time, fixed connecting columns 105 are fixedly installed at two ends of the connecting plates 102, and the connecting columns 105 are located between the two guide wheels 103 and are arranged on two sides of the connecting plates 102 opposite to the guide wheels 103. The connecting blocks 106 are rotatably connected between the connecting columns 105 on the two adjacent connecting plates 102, bearings are fixedly mounted at the two ends of each connecting plate 102, and the bearings are fixedly mounted on the connecting columns 105. Thereby realizing that two adjacent connecting plates 102 or three adjacent connecting plates 102 can smoothly pass through the circular arc section of the conveying line. Meanwhile, the transmission of the thrust between two adjacent connecting plates 102 can be realized, and the linkage between two adjacent connecting plates 102 can be realized. In order to reduce the friction between the guide wheels 103 on the connecting plate 102 and the guide rail 101, the connecting plate 102 can be pushed by small pushing force, two guide wheels 107 are rotatably mounted on the connecting plate 102, the guide wheels 107 are positioned between the two connecting columns 105 and adjacent to the connecting columns 105, and the outer surfaces of the guide wheels 107 are abutted against the guide rail 101. The guide wheel 107 may be a standard bearing available from the outside as the guide wheel 107. The contact between the guide rail 101 and the guide wheel 107 is provided with a guide surface. The guide surface is provided on the guide rail 101. The guide wheel 107 is designed to share the gravity of the connection plate 102 and the printing table 2 for supporting. Allowing gravity to act directly vertically on the guide rail 101, thereby reducing the frictional force between the guide groove 104 and the guide rail 101. The thrust required to move web 102 is relatively small.

The power device comprises a power seat 108 arranged on the frame 1, two chain wheels 109 are arranged on the power seat 108 in a straight line, and a double-row chain 110 is sleeved on the two chain wheels 109. One of the sprockets 109 is connected to a drive motor 111, and the drive motor 111 is vertically mounted on the power base 108. One side of the connecting plate 102 is provided with a rack 112 adapted to the double-row chain 110, the other side of the connecting plate 102 is rotatably provided with two positioning pillars 113, and the positioning pillars 113 are connected to the connecting plate 102 through bearings so as to realize the rotation of the positioning pillars 113. A positioning slot 114 coupled with the positioning device is disposed between the two positioning posts 113. When the driving motor 111 starts to operate, the sprocket 109 of the power seat 108 engages with one of the double-row chains 110, so that the double-row chains 110 start to rotate. Since the other row of chains is connected to the rack 112 on the link plate 102, the double row of chains 110 moves the link plate 102 when rotated. It should be noted that in order to reduce the idle running time of the driving motor 111, the distance between two sprockets 109 is larger than the distance between the most edge of the rack 112 and the adjacent tooth lobes on two adjacent connecting plates 102. So that the rack 112 on the next link plate 102 just engages the double row of chains 110 just as soon as the rack 112 on the previous link plate 102 leaves the double row of chains 110. When the product needs to be printed on the connecting plate 102 and the connecting plate 102 is positioned, the driving motor 111 stops working, the positioning device 5 is clamped in the positioning clamping groove 114, and when the product needs to be transferred and does not need to be positioned, the positioning device 5 is pushed out from the positioning clamping groove 114. The driving motor 111 operates, and the positioning of the connecting plate 102 can be effectively realized through the coupling connection of the positioning card slot 114 and the positioning device 5. Thereby the positioning step of the product when the operator prints the product is reduced, and further the working efficiency is improved.

Positioner 5 includes locating plate 501 on the vertical installation frame 1, and the both sides fixed mounting of locating plate 501 has cylinder block 502 and positioning seat 503, is equipped with dwang 504 on the positioning seat 503, and the rotation is connected with locating lever 505 on the dwang 504, and horizontal installation is equipped with in the cylinder block 502 and drives actuating cylinder 506, is equipped with the through-hole 507 with locating lever 505 adaptation on the locating plate 501. One end of the positioning rod 505 passes through the through hole 507 and is fixedly connected with the output end of the driving cylinder 506. The other end of the positioning rod 505 is provided with a clamping portion 508 adapted to the positioning clamping groove 114. When the connecting plate 102 needs to be positioned, the output end of the driving cylinder 506 extends to push the positioning rod 505 to rotate around the rotating rod 504, so that the clamping portion 508 on the positioning rod 505 is clamped in the positioning clamping groove 114. Thereby achieving the positioning of the connection plate 102.

The printing table 2 comprises a printing seat 201 fixedly connected with a linkage device upper connecting plate 102, the connecting plate 102 is fixedly connected to the middle of the printing seat 201, and a placing plate 202 used for placing a product is fixedly mounted at one end of the printing seat 201. The other end of the printing seat 201 is fixedly provided with a supporting wheel, a sliding groove 203 matched with the supporting wheel and a supporting device for supporting the printing seat 201 are further arranged on the machine frame 1, and the supporting device and the sliding groove 203 are oppositely arranged on two sides of the driving mechanism and are positioned below the printing device 4. The chute 203 is located inside the guide rail 101 and below the column 3. In order to reduce the friction force of the support wheel in the chute 203, a cylindrical transition bar is arranged at the top of the chute 203. The supporting device comprises a supporting seat fixedly arranged on the frame, a supporting cylinder is vertically arranged on the supporting seat, a supporting rod is fixedly arranged on the output end of the supporting cylinder,

since the printing device 4 exerts a certain pressure on the printing plate 435 during operation, screen printing cannot be performed or is not effective and sharp without the downward pressure. Printing plate 435 is pressed against printing base 201 and thus spread over guide wheels 103 on web 102, so that the forces on guide rail 101 and guide wheels 103 are asymmetrical and cause different levels of damage. Through set up a supporting wheel on the tip at printing seat 201 to set up spout 203 in frame 1, set up the transition stick in the spout 203, support cylinder drives branch upward movement before the printing simultaneously and contacts branch and printing seat 201 and provide an ascending power for printing seat 201 with branch, offsets a part of pushing down force, prolongs the life of connecting plate 102. The printing device 4 comprises a support frame 41 which is rotatably installed on the frame 1, one end of the support frame 41 is rotatably installed on the upright post 3 through a rotating shaft or a hinge, and a driving device is arranged between the support frame 41 and the upright post 3. A fixing device 43 for fixing the printing screen is fixedly arranged on the supporting frame 41, and a scraping device 44 for jetting ink and scraping ink is arranged in the middle of the fixing device 43. The wiping device 44 is slidably mounted on the support frame 41. The driving device and the fixing device 43 are oppositely arranged at the upper side and the lower side of the supporting frame 41. The support frame 41 can be rotatably connected to the support frame 41, so that when the colors to be printed and the patterns to be printed are different in a continuous production line, only the support frame 41 which is not needed is required to be rotated, and the printing screen plate in the support frame 41 does not need to be replaced or taken out. The preparation time before printing is shortened, thereby improving the production efficiency.

Referring to fig. 4-6, the printing device 4 includes a support frame 41 rotatably connected to the upright 3, and a front clamping device 43 and a rear clamping device 45 fixedly installed at two ends of the bottom of the support frame, the front clamping device 43 and the rear clamping device 45 are supported by a wiping device 44, the wiping device 44 is slidably installed on the support frame 41, and a fixing frame 42 for installing a screen printing plate is fixedly installed between the front clamping device 43 and the rear clamping device 45.

The support frame 41 is provided with a sliding device for connecting the ink scraping device 44 and a transmission device for driving the sliding device to slide in the support frame 41, and the sliding device comprises support rods 401 which are fixedly arranged in the support frame 41 and are arranged in parallel. The bracing piece 401 is cylindrical, is equipped with sliding seat 402 between two bracing pieces 401, and the last rotation of sliding seat 402 installs the gyro wheel 403 of a plurality of and bracing piece 401 adaptation, and a plurality of gyro wheel 403 is located between two bracing pieces 401, is equipped with the support groove with bracing piece 401 appearance adaptation on the circumference of gyro wheel 403, and on gyro wheel 403 rotated the installation sliding seat 402 through the bearing. When a certain force is applied to the sliding seat 402, the sliding seat 402 slides between the support rods 401 by the cooperation of the rollers 403 and the support rods 401. The movement of the wiping device 44 is effected when the wiping device 44 is fixedly mounted on the sliding block 402. The supporting frame 41 is further provided with a transmission device for providing power for the sliding seat 402, the transmission device comprises belt pulleys 404 fixedly mounted at two ends of the supporting frame 41, the two belt pulleys 404 are sleeved with a toothed belt 405, the middle of the sliding seat 402 is provided with a rectangular driving hole matched with the toothed belt 405, the top surface of the driving hole is provided with a convex tooth matched with the toothed belt 405, the end of the supporting frame 41 is provided with a driving motor 406 fixedly mounted, and the output end of the driving motor 406 is connected with the belt pulleys 404 in a synchronous belt transmission mode. The driving motor 406 rotates to drive the toothed belt 405 to rotate between the two belt pulleys 404, and the sliding of the sliding seat 402 between the two support rods 401 is realized through the cooperation of the toothed belt 405 and the rack 112 on the sliding seat 402.

As shown in the figure, the driving device includes a connecting frame 407 connected between the supporting frame 41 and the upright column 3, one end of the connecting frame 407 is connected to the upright column 3, the other end of the connecting frame 407 is movably connected to the supporting frame 41, a connecting cylinder is fixedly mounted at one end of the connecting frame 407, a body of the connecting cylinder is mounted in the connecting frame 407 and located at a connecting end where the connecting frame 407 is fixed to the upright column 3, and an output end of the connecting cylinder is connected to the upright column 3. The other end of the connecting frame 407 is provided with two connecting feet 408, a connecting shaft 409 is fixedly connected between the two connecting feet 408, a U-shaped seat 410 is fixedly installed on the supporting frame 41, and the connecting shaft 409 is movably connected to the U-shaped seat 410. Strip holes 413 are arranged on two sides of the U-shaped seat 410. Connecting shaft 409 is installed in strip hole 413. The U-shaped seat 410 is located between the two connecting legs 408 and is movably connected by a connecting shaft 409. Thereby movably connecting the connecting frame 407 with the supporting frame 41. In order to ensure that the relative position of the support frame 41 does not change when the support frame 41 is in operation or the air supply of the air cylinder is cut off, and the angle between the support frame 41 and the upright post 3 is convenient to adjust. A locking plate 411 is rotatably installed in the U-shaped seat 410, and the locking plate 411 and the U-shaped seat 410 are hinged to one end of the U-shaped seat 410 through a rotating shaft. The rotation axis is adjacent to the strip hole 413. The two sides of the locking plate 411 are provided with a plurality of locking grooves matched with the connecting shaft 409. The lock groove is a U-shaped groove. In use, connecting shaft 409 is arranged at different positions in strip-shaped hole 413. The locking plate 411 is snapped into the U-shaped seat 410 by rotating the locking plate 411 around the rotation axis. When the locking plate 411 is buckled, the locking slot on the locking plate 411 is clamped on the connecting shaft 409. Thereby fixing the position of the connecting shaft 409 in the strip-shaped hole 413, and achieving the angle adjustment of the supporting frame 41. Due to the limited extension of the cylinder. When the connecting shaft 409 is positioned close to the bracket in the strip-shaped hole 413. The greater the rotation angle of the support bracket 41. When the connecting shaft 409 is positioned far away from the bracket in the strip-shaped hole 413. The smaller the rotation angle of the support bracket 41.

The front clamping device 43 comprises a front fixing seat 414 fixedly installed on the supporting frame 41, two cross guide rails 415 are horizontally installed on the front fixing seat 414, a front connecting seat 416 is fixedly installed on the cross guide rails 415, a Y-axis cylinder 417 is arranged between the two cross guide rails 415, and the output end of the Y-axis cylinder 417 is fixedly connected with the front connecting seat 416. The front connecting base 416 is driven to move on the front fixing base 414 in the front-back (Y-axis) direction by the Y-axis cylinder 417 as a power source. When the rear clamping device 45 is in the fixed state, the Y-axis cylinder 417 pushes the front connecting seat 416 to move toward the rear clamping device 45, so that the fixing frame 42 is more stably installed between the front clamping device 43 and the rear clamping device 45. Two linear guide rails 418 that are parallel to each other are vertically installed in the front connecting seat 416, a mounting hole is arranged between the two linear guide rails 418, and the front connecting seat 416 is penetrated in the front-rear direction of the mounting hole. One end of the linear guide 418 extends toward the bottom of the connection seat 416 and is located outside the connection seat 416. A front clamping seat 419 is fixedly arranged on the linear guide rail 418, and the front clamping seat 419 is positioned right below the front connecting seat 416. A front Z-axis handle 421 for driving the front clamp seat 419 to move up and down (Z-axis) is fixedly connected to the front clamp seat 419. The front Z-axis handle 421 is located in the mounting hole, the driving rod 420 is connected to the front Z-axis handle 421 through a screw, and the driving rod 420 is located between the two linear guide rails 418. One end of the driving rod 420 is fixedly connected with the front Z-axis handle 421, the other end of the driving rod is fixedly connected with the front clamping seat 419, and Z-axis digital scales are arranged on the outer surface of the front Z-axis handle 421. The driving rod 420 can be driven to move up and down by the rotation of the front Z-axis handle 421, so as to drive the front clamping seat 419 to move up and down (Z-axis) along the linear guide 418. Meanwhile, a Z-axis digital scale is arranged on the front Z-axis handle 421, and it should be noted that the Z-axis digital scale has a scale "0", and the Z-axis digital scale "0" identifies an origin in the Z-axis direction. The Z-axis numerical scale can intuitively read the up-and-down moving distance of the front clamping seat 419. A sliding guide rail 422 is horizontally arranged in the front clamping seat 419, a front clamping plate 423 is fixedly arranged on the sliding guide rail 422, the front clamping seat 419 is positioned on one side of the front clamping seat 419 and is adjacent to the rear clamping device 45, a front X-axis thrust rod 425 for driving the front clamping plate 423 is arranged at one end of the front clamping seat 419, and the front X-axis thrust rod 425 and the front clamping plate 423 are fixedly connected through a transition plate 424. One end of the front clamping seat 419 is provided with a spring, one end of the spring is fixedly connected with the front clamping seat 419, and the other end of the spring is fixedly connected with the front clamping plate 423. The front clamping plate 423 is provided with X-axis scales, and the front clamping seat 419 is provided with X-axis digital marks matched with the X-axis scales. The number mark of the invention is "0", it should be noted that the X-axis number mark "0" also marks the origin of the front clamping plate 423 in the X-axis direction, the end of the front X-axis thrust rod 425 is provided with an inner hexagonal wrench hole, the end of the front clamping seat 419 is provided with a driving hole penetrating through the inner hexagonal wrench hole, the front X-axis thrust is driven to rotate when the inner hexagonal wrench penetrates through the driving hole and is clamped in the inner hexagonal wrench hole, and the rotation of the front X-axis thrust rod 425 drives the clamping plate to move along the linear guide 418 in the left-right (X-axis) direction. Because the front X-axis thrust rod 425 is in threaded connection with the front connecting seat 416. In the normal state, a certain gap exists between the external thread and the internal thread. The front clamping plate 423 may be displaced during operation of the wiping device 44. By providing a spring at the other end of that front clamping shoe 419, the spring in the charged state counteracts its gap by the spring's resilience and thus prevents the wiping device 44 from moving during operation of the front clamping plate 423. The linear guide rail, the sliding guide rail and the cross guide rail are all outsourcing standard guide rails.

The rear clamping device 45 comprises a rear fixed seat 426 fixedly installed on the supporting frame 41, two cross guide rails 415 are horizontally installed on the rear fixed seat 426, a rear connecting seat 427 is fixedly installed on the cross guide rails 415, a rear Y-axis handle 428 for driving the rear connecting seat 427 to move in the front-rear (Y-axis) direction is arranged on the rear connecting seat 427, an adjusting rod 429 is in threaded connection with the rear Y-axis handle 428, and one end of the adjusting rod 429 is in threaded connection with the rear connecting seat 427. The other end extends toward the front clamp 43 and penetrates the rear holder 426, and the rear Y-axis handle 428 abuts the front holder 414. Springs are arranged on two sides of the adjusting rod 429, one end of each spring is fixedly connected with the rear fixed seat, and the other end of each spring is fixedly connected with the rear connecting seat 427. The rear connecting base 427 is slidably connected with the rear clamping base 430, a rear Z-axis handle 431 is arranged in the rear connecting base 427 and drives the rear clamping base 430 to move along the vertical (Z-axis) direction, a rear clamping plate 432 is slidably mounted on the rear clamping base 430, and a rear X-axis thrust rod 433 is arranged at one end of the rear clamping base 430 and drives the rear clamping plate 432 to move along the horizontal (X-axis) direction. A rotary cylinder 434 for mounting the fixing frame 42 is fixedly installed at both ends of the rear clamping base 430. The two ends of the fixing frame are respectively connected with the front clamping plate 423 and the rear clamping plate 432. What needs to be described about the fixed connection is that the rear connecting seat 427 is provided with Y-axis scales which are the same as the X-axis scales. The rear fixing base is provided with a Y-axis digital mark which is the same as the X-axis digital mark, and the rear Z-axis handle 431 is provided with a Z-axis digital scale which is the same as the front Z-axis handle 421. The rear clamping plate 432 is provided with X-axis scales identical to the X-axis scales. The rear clamping seat 430 is provided with an X-axis numerical identifier which is the same as the X-axis numerical identifier, and the connecting mode of the rear clamping seat 430 and the rear connecting seat 427 is the same as that of the front clamping seat 419 and the front connecting seat 416. The rear clamping plate 432 is coupled to the rear clamping shoe 430 in the same manner as the front clamping plate 423 is coupled to the front clamping shoe 419.

In use, the fixing frame 42 is connected with the rear clamping plate, and the rotary air cylinder 434 is used for primarily fixing the fixing frame 42. The rear clamp 45 is returned to the original position or moved to a certain scale in all of the three directions X, Y, and Z by adjusting the rear Y-axis handle 428, the rear X-axis handle, and the rear Z-axis handle 431. And then the front X-axis handle and the front Z-axis handle 421 adjust the scales of the front clamping device 43 which are the same as those of the rear clamping device 45 in the Z-axis direction and the X-axis direction. The front connecting base 416 is moved toward the rear clamping device 45 by the Y-axis cylinder 417. Thereby fixing the fixing frame 42.

The ink scraping device 44 comprises a printing plate 435 fixedly connected with a sliding seat 402 in the supporting frame 41, an ink jet connecting plate and an ink scraping connecting plate are arranged right below the printing plate 435 in parallel, fine adjusting devices are arranged at two ends of the ink jet connecting plate and two ends of the ink scraping connecting plate respectively and are an ink jet fine adjusting device and an ink scraping fine adjusting device respectively, the ink jet fine adjusting device and the ink scraping fine adjusting device are identical in structure and are vertically arranged on the printing plate 435, each fine adjusting device comprises a fine adjusting seat 436 arranged on the printing plate 435, a fine adjusting handle 437 and a fine adjusting shaft 438 fixedly connected with the fine adjusting handle 437 are rotatably arranged in the fine adjusting seats 436, and the fine adjusting shaft 438 penetrates through the printing plate 435 and is positioned right below the printing plate 435. The internal structures of the ink jet micro-adjustment device and the ink scraping micro-adjustment device are the same as those of the micrometer in the prior art, and the purpose of use is also the same. The distance between the ink jet connecting plate or the ink scraping connecting plate and the printing screen plate can be adjusted by rotating the fine adjustment handle 437, so that the printing quality can be effectively improved. The ink scraping connecting plate comprises an ink scraping seat 439 which is adjustably connected with a fine adjustment shaft 438 of the ink scraping fine adjustment device, adjusting plates are arranged at two ends of the ink scraping seat 439, fixing holes used for being connected with the ink scraping seat 439 are formed in the adjusting plates, the fixing holes are adjacent to the ink scraping seat 439, and arc-shaped adjusting holes 442 are formed in the upper portion of the fixing holes. The screw is used for penetrating through the fixing hole and is in threaded connection with the output shaft of the ink scraping fine adjustment device, and the screw is used for penetrating through the arc-shaped adjusting hole 442 and is in threaded connection with the output shaft of the ink scraping fine adjustment device. When the inclination angle of the ink scraping base 439 needs to be adjusted, the screws in the fixing hole and the adjusting hole 442 are loosened, the ink scraping base 439 rotates around the screws in the fixing hole by taking the screws in the fixing hole as a rotating shaft, and when the ink scraping base rotates to a set angle, the screws in the adjusting hole 442 are screwed down, and the screws in the fixing hole are screwed down. Thereby realizing the angular adjustment of the ink scraping seat 439. A clamping groove is formed in one side, close to the ink jet connecting plate, of the bottom surface of the ink scraping seat 439, a clamping plate 444 is installed on the side surface of the ink scraping seat 439, a handle 445 is locked in the middle of the clamping plate 444, and the end portion of the handle 445 penetrates through the clamping plate 444 and is in threaded connection with the ink scraping seat 439. A clamping groove which is the same as the clamping groove is formed between the bottom of the clamping plate 444 and the ink scraping base 439, the clamping groove and the clamping groove are oppositely arranged on two sides of the ink scraping base 439 and form a clamping cavity, and the ink scraping plate 446 is arranged in the clamping cavity. Because the locking handle 445 is in threaded connection with the ink scraping base 439, and meanwhile, the locking handle 445 penetrates through the clamping plate 444, the clamping plate 444 can be fixed on the ink scraping base 439 through the locking handle 445, so that the ink scraping plate 446 is fixed in the buckling cavity, and meanwhile, gaskets with different thicknesses are added between the ink scraping base 439 and the clamping plate 444, so that the size of the buckling cavity can be adjusted. Can meet the requirements of different sizes of the ink scraping plates 446. It should be noted that the spacers described herein are standard components. The two sides of the top of the ink scraping plate 446 are provided with clamping parts matched with the clamping grooves. The bottom of the squeegee 446 is provided with a fixing groove penetrating the squeegee 446. The scraper is installed in the fixed slot, and the both sides of scraper 446 are equipped with the screw hole that a plurality of runs through the fixed slot, change the width of fixed slot through the screw of twist screw in the screw hole. Thereby, the scraper can be detachably arranged in the fixed groove.

The ink jet connecting plate comprises an ink jet seat 447 adjustably connected with a fine adjustment shaft 438 of the fine adjustment device, the bottom of the ink jet seat 447 is detachably connected with an ink jet plate 448, and the ink jet plate 448 is provided with a plurality of ink jet tubes. It should be noted that the ink jet tube described herein may adopt an ink switching device disclosed in the chinese utility model patent with the application number of cn201921133954.4. The ink jetting holder 447 is connected to the output shaft of the ink jetting fine adjustment device in the same manner as the ink scraping holder 439 is connected to the output shaft of the ink scraping fine adjustment device, and the ink jetting plate 448 is connected to the ink jetting holder 447 in the same manner as the ink scraping plate 446 is connected to the ink scraping holder 439.

The invention also provides a printing method, which comprises the following operation steps: first, the rear clamping device 45 of the printing device 4 is adjusted in the three directions of the X-axis, the Y-axis and the Z-axis, and the values displayed in the two directions of the X-axis and the Z-axis are recorded.

Next, the front clamp 43 of the printing unit 4 is adjusted in both the X-axis and Z-axis directions based on the recorded values, and the values of the front clamp 43 of the printing unit 4 in both the X-axis and Z-axis directions are the same as those of the rear clamp 45 of the printing unit 4 in both the X-axis and Z-axis directions. And fixes the fixing frame 42 between the front clamping means 43 and the rear front clamping means 43.

And thirdly, manufacturing a silk screen plate to be printed and fixedly installing the silk screen plate in the fixing frame 42, wherein different printing patterns in the silk screen plate are manufactured by adopting the same original point. Such as the need to print different boluses and different colors on a product. Because the shape of the silk screen plate is regular quadrangle, such as square, rectangle, parallelogram, etc., when the silk screen plate is manufactured, the silk screen plate is manufactured in a uniform direction, uniform points or edges are used as a reference, and then the required pattern is manufactured on the silk screen of the silk screen plate. That is to say, a certain point in the patterns in different silk screen plates is the same as a certain side of the frame of the silk screen plate in relative position with a certain point.

Thirdly, a product to be printed is placed on the printing table 2, and the positioning device 5 right below the printing table 2 correspondingly locks the printing table 2.

And a printing device 4 is used for printing the patterns in the silk screen plate on the product. After printing is completed, the printing table 2 moves the product under the next printing device 4 until printing of the product is completed.

The relative positions of the patterns in different silk-screen printing plates of the same product are the same. Therefore, only by adjusting the external arrangement of the front clamping device 43 and the rear clamping device 45 of the first printed pattern, the external arrangement of the subsequent front clamping device 43 and the rear clamping device 45 can be adjusted according to the position of the first front clamping device 43 and the rear clamping device 45. The preparation work before printing is shortened. Thereby realizing the alignment-free of the subsequent printing stations. In all cases, the colors, positions, and hues of printing need to be adjusted before continuous printing. Thus, the adjustment of the front and

rear clamps

43, 45 required during the press set-up and to complete the first printing pass. The subsequent printing process is only required to be adjusted by installing the numerical value recorded in the first printing process. No adjustment is required for each process.

Because the printing table 2 automatically moves the product to the next printing work, the printing positioning device 5 positions and fixes the printing table 2 every time, thereby avoiding the adjustment of the printing table 2 and the adjustment of the product on the printing table 2 in the printing process. Thereby, the printing table 2 is free from alignment. Through the alignment-free adjustment of the fixing device 43 and the alignment-free adjustment of the printing table 2, the screen printing screen plate and the product do not need to be secondarily positioned in the whole printing process, and the alignment-free effect is achieved.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the design of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A multicolor printing production line comprises a rack and is characterized in that a plurality of printing tables for placing products are connected to the rack in a sliding manner; the printing tables are combined into a closed and linked oval conveying line, and a plurality of stand columns are linearly arranged in the conveying line; the printing device comprises a rack, a stand column, printing devices and a positioning device, wherein the stand column is fixedly arranged on the rack, the printing devices are symmetrically arranged on two sides of the stand column, the printing devices can be connected to the stand column in a turnover mode, and the positioning device for locking the printing table is arranged under each printing device.

2. The multicolor printing production line according to claim 1, characterized in that: the printing machine is characterized in that a driving mechanism for driving a plurality of printing tables to move is further arranged on the rack, the driving mechanism comprises a linkage device connected to the rack in a sliding mode and a power device for driving the linkage device to move, the linkage device comprises a closed oval guide rail fixedly mounted on the rack, the guide rail is connected with connecting plates in the same number as the printing tables in a sliding mode, a connecting block is rotatably connected between every two adjacent connecting plates, the power device comprises a power seat mounted on the rack, two chain wheels are linearly arranged on the power seat, and double-row chains are sleeved on the two chain wheels; one side of the connecting plate is provided with a rack matched with the double-row chain, the other side of the connecting plate is rotatably provided with two positioning columns, and a positioning clamping groove in coupling connection with the positioning device is arranged between the two positioning columns.

3. The multicolor printing production line according to claim 2, characterized in that: the positioning device comprises a positioning plate vertically arranged on the rack, a cylinder seat and a positioning seat are fixedly arranged on two sides of the positioning plate, an upper positioning rod is rotatably arranged in the positioning seat, a driving cylinder is horizontally arranged in the cylinder seat, and one end of the positioning rod penetrates through the positioning plate and is fixedly connected with the output end of the driving cylinder; the other end of the positioning rod is provided with a clamping part matched with the positioning clamping groove.

4. The multicolor printing production line according to claim 1, characterized in that: the printing table comprises a printing seat which is slidably arranged on the machine frame, and a placing plate for placing a product is fixedly arranged at one end of the printing seat; a supporting wheel is fixedly mounted at the other end of the printing seat, a sliding groove matched with the supporting wheel and a supporting device for supporting the printing seat are further arranged on the machine frame, and the supporting device and the sliding groove are oppositely arranged on two sides of the driving mechanism and are positioned below the printing device; the sliding groove is positioned on the inner side of the guide rail and below the upright post; the supporting device comprises a supporting seat fixedly mounted on the rack, a supporting cylinder is vertically mounted on the supporting seat, and a supporting rod is fixedly mounted at the output end of the supporting cylinder.

5. The multicolor printing production line according to claim 1, characterized in that: the printing device comprises a support frame, a front clamping device and a rear clamping device, wherein the support frame is rotatably connected to an upright post, and the front clamping device and the rear clamping device are fixedly arranged at two ends of the bottom of the support frame; two be equipped with the sliding seat between the bracing piece, transmission includes the belt pulley of fixed mounting at the support frame both ends, two the cover is equipped with the toothed belt on the belt pulley, the middle part of sliding seat be equipped with toothed belt adaptation dogtooth, the tip of support frame is equipped with fixed mounting and drives the motor, the output that drives the motor with belt pulley transmission is connected.

6. The multicolor printing production line according to claim 5, characterized in that: the driving device comprises a connecting frame connected between the supporting frame and the upright post, one end of the connecting frame is fixedly provided with a connecting cylinder, and the output end of the connecting cylinder is connected with the upright post; the other end of the connecting frame is provided with two connecting pins, a connecting shaft is fixedly connected between the two connecting pins, a U-shaped seat is fixedly installed on the supporting frame, and the connecting shaft is movably connected in the U-shaped seat; and a locking plate is rotatably arranged in the U-shaped seat, and a plurality of locking grooves matched with the connecting shaft are formed in two sides of the locking plate.

7. The multicolor printing production line according to claim 5, characterized in that: preceding clamping device includes fixed mounting and is in preceding fixing base on the support frame, slidable mounting has preceding connecting seat on the preceding fixing base, be equipped with in the preceding fixing base and order about the Y axle cylinder that preceding connecting seat fore-and-aft direction removed, sliding connection has preceding tight seat of clamp on the preceding connecting seat, be equipped with in the preceding connecting seat and order about preceding tight seat is along the preceding Z axle handle of upper and lower direction removal, slidable mounting has preceding clamp plate on the preceding tight seat of clamp, the one end of preceding tight seat of clamp is equipped with orders about preceding clamp plate along the preceding X axle thrust pole of left and right directions removal.

8. The multicolor printing production line according to claim 5, characterized in that: the rear clamping device comprises a rear fixing seat fixedly mounted on the supporting frame, a rear connecting seat is slidably mounted on the rear fixing seat, a rear Y-axis handle for driving the rear connecting seat to move in the front-rear direction is arranged on the rear fixing seat, a rear clamping seat is slidably connected onto the rear connecting seat, a rear Z-axis handle for driving the rear clamping seat to move in the up-down direction is arranged in the rear connecting seat, a rear clamping plate is slidably mounted on the rear clamping seat, and a rear X-axis thrust rod for driving the rear clamping plate to move in the left-right direction is arranged at one end of the rear clamping seat; and rotary cylinders for clamping the fixing frame are fixedly mounted at two ends of the rear clamping seat.

9. The multicolor printing production line according to claim 5, characterized in that: the wiping device includes the printing plate of slidable mounting on the support frame, there are inkjet connecting plate and wiping connecting plate under the printing plate parallel mount, the inkjet connecting plate with the micromatic setting is all installed at the both ends of wiping the printing plate, and micromatic setting is including installing the fine setting seat on the printing plate, and fine setting handle and fine setting axle with fine setting handle fixed connection are installed to the fine setting seat internal rotation, the inkjet connecting plate include with the adjustable inkjet seat of connecting of fine setting axle, the bottom of inkjet seat can be dismantled and be connected with the ink jet board, be provided with a plurality of ink jet on the ink jet board, wipe the ink connecting plate include with the adjustable ink seat of scraping of connecting of fine setting axle, can dismantle on the ink seat and be connected with the wiping board.

10. A printing method for a multicolor printing line according to any one of claims 1 to 9, comprising the following operating steps: s1, adjusting a rear clamping device on a printing device in three directions of an X axis, a Y axis and a Z axis and recording numerical values displayed in the two directions of the X axis and the Z axis;