CN115489195A - Multicolor printing production line and printing method - Google Patents

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

A kind of multi-color printing production line and printing method

technical field

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

Background technique

Screen printing belongs to stencil printing. The principle of stencil printing is that the printing plate (the perforated paper that can pass the ink is made on the base of the film plate or other plates) when printing, the ink is transferred to the printing plate through the holes of the stencil through a certain pressure. On objects (paper, ceramics, etc.), images or text are formed. This printing method has great flexibility and wide applicability.

A multi-color silk screen printing production line disclosed in the Chinese invention patent with application number CN202023176377.2 includes a head printing table, an end printing table and a middle printing table, and one side of the head printing table is connected to the middle by connecting components. The printing table is connected, the side of the middle printing table away from the head printing table is connected to the end printing table through a connecting component, and the top of the head printing table, the end printing table and the middle printing table are all fixedly installed with a conveying assembly and a limit mechanism. The tops of the end printing table, the end printing table and the middle printing table are all fixedly equipped with screen printing stations, sheet arrangement stations, drying stations and sheet separation stations. The feeding station is fixedly installed, and the top of the end printing table away from the middle printing table is also fixedly installed with the unloading station. Beneficial effects: the modular design of the multi-color screen printing unit in the printing production line has better compactness and continuous conveying. More efficient, convenient loading and unloading, production line conveying limit, stable and better precision. The above scheme can effectively solve the problem of continuous printing, but it is necessary to individually adjust the screen printing screen on the screen printing station when the product needs to be replaced or the acquaintance product needs to be printed. It is necessary to replace the screen printing screen after shutdown to continue printing.

A fully automatic touch screen printing machine disclosed in the Chinese invention patent with application number CN201310556452.3 includes a base and a workbench. There are multiple sets of workbenches installed on the base. The device will accurately drive the touch screen to the designated processing procedure; the feeding device, the feeding device includes a manipulator and a CCD detection device installed on the manipulator; at least two sets of processing devices, the processing device includes a screen printing device, Servo positioning device; the servo positioning device is installed on the screen printing device, and adjusts the screen printing device through the position of the touch screen fed back by the CCD detection device to ensure that the screen printing device is facing the processing position. The beneficial effects of the present invention are: realizing a fully automatic production process, and simultaneously multiple sets of silk screen drying processing devices can realize multi-color overprinting in one production line, greatly improving production efficiency and greatly reducing production costs. The above scheme is used to check the position of the screen printing screen at all times through the CCD detection device and adjust it in time to ensure the printing quality. However, the screen printing screen on the screen printing station needs to be adjusted separately when the product needs to be replaced or the acquaintance product. When the acquaintance product with the same pattern and different colors needs to be printed, the screen printing screen needs to be replaced after the shutdown to continue printing.

Contents of the invention

In order to solve the above problems, the present invention provides a multi-color printing production line and printing method. The positioning device is used to position and lock the printing table. Carry out secondary positioning and positioning to improve printing quality and reduce labor costs. At the same time, several of the printing tables are closed and linked. When producing similar products, one or more printing devices need to be rotated. At the same time, different The printing device of the color can be used, and there is no need to stop and debug. Therefore, the flexibility of the equipment during operation is enhanced and the continuous printing efficiency is improved.

Another object of the present invention is to provide a multi-color printing production line and printing method. Since the printing device can be turned over, when printing similar products, the printing device corresponding to the color that does not need to be printed is turned over to maintain a certain angle with the column relationship, install the required printed colors on another printing device. You can start printing similar products. Turning over the printing device corresponding to the color that does not need to be printed can also ensure that the residual ink on the screen printing screen drips onto the product through the mesh holes on the screen printing screen.

Yet another object of the present invention is to provide a multi-color printing production line and a printing method. Since the exterior of the front clamping device and the rear clamping device can be adjusted in the three directions of X, Y, and Z, it is only necessary to adjust the The external placement of the front clamping device and rear clamping device of the first printed pattern, the subsequent external clamping device and rear clamping device are carried out according to the position of the first front clamping device and rear clamping device Just adjust. Shorten the preparation work before printing. In this way, the alignment-free position of subsequent printing stations can be realized.

In order to achieve the above object, the technical solution adopted in the present invention is: a multi-color printing production line, including a frame, and several printing tables for placing products are slidably connected to the frame; several of the printing tables are combined into a A closed and linked elliptical conveying line, in which several columns are arranged in a straight line; the columns are fixedly installed on the frame, and printing devices are installed symmetrically on both sides of the columns, and the printing The device is reversibly connected to the column, and a positioning device for locking the printing table is provided directly under each printing device.

As preferred in the present invention, the frame is also provided with a drive mechanism that drives several printing tables to move, and the drive mechanism includes a linkage device that is slidably connected to the frame and a power device that drives the linkage device to move. The device includes a closed elliptical guide rail fixedly installed on the frame, the same number of connecting plates as the printing table are slidably connected to the guide rail, and connecting blocks are rotatably connected between two adjacent connecting plates. The power device includes a power base installed on the frame, and two sprockets are arranged in a straight line on the power base, and double-row chains are sleeved on the two sprockets; one side of the connecting plate is set There is a rack adapted to the double-row chain, and the other side of the connecting plate is rotatably installed with two positioning posts, and a positioning card slot coupled with the positioning device is provided between the two positioning posts .

As preferred in the present invention, the positioning device includes a positioning plate vertically installed on the frame, cylinder seats and positioning seats are fixedly installed on both sides of the positioning plate, and an upper positioning rod is installed in rotation in the positioning seat , a driving cylinder is horizontally installed in the cylinder seat, and one end of the positioning rod is fixedly connected with the output end of the driving cylinder through the positioning plate; the other end of the positioning rod is provided with a clamping part adapted to the positioning slot .

As preferred in the present invention, the printing station includes a printing seat slidingly installed on the frame, one end of the printing seat is fixedly installed with a placement plate for placing products; the other end of the printing seat is fixedly installed with supporting wheels, The frame is also provided with a chute adapted to the support wheel and a support device for supporting the printing seat, the support device and the chute are oppositely arranged on both sides of the drive mechanism and located at Below the printing device; the chute is located inside the guide rail and below the column; the support device includes a support seat fixedly installed on the frame, and a support cylinder is vertically installed on the support seat. A strut is fixedly installed on the output end of the cylinder.

As preferred in the present invention, the printing device includes a support frame rotatably connected to the column, and a front clamping device and a rear clamping device fixedly installed at both ends of the bottom of the support frame, the front clamping device and the rear clamping device The clamping device bracket is provided with a scraping device, and the scraping device is slidably installed on the support frame, and a fixing frame for installing a screen printing screen is fixedly installed between the front clamping device and the rear clamping device , the support frame is provided with a sliding device and a transmission device, the sliding device includes a support rod fixedly installed in the support frame and arranged in parallel; a sliding seat is provided between the two support rods, and the transmission The device includes pulleys fixedly installed at both ends of the support frame, toothed belts are sleeved on the two pulleys, the middle part of the sliding seat is provided with protruding teeth adapted to the toothed belts, and the ends of the support frame A driving motor is fixedly installed, and the output end of the driving motor is connected with the belt pulley.

As preferred in the present invention, the driving device includes a connection frame connected between the support frame and the column, one end of the connection frame is fixedly installed with a connection cylinder, and the output end of the connection cylinder is connected to the column connection; the other end of the connecting frame is provided with two connecting feet, a connecting shaft is fixedly connected between the two connecting feet, a U-shaped seat is fixedly installed on the supporting frame, and the connecting shaft is movably connected to the In the U-shaped seat; a locking plate is rotatably installed in the U-shaped seat, and several locking grooves adapted to the connecting shaft are provided on both sides of the locking plate.

As preferred in the present invention, the front clamping device includes a front fixing seat fixedly installed on the support frame, a front connecting seat is slidably installed on the front fixing seat, and the front fixing seat is provided to drive the A Y-axis cylinder that moves front and rear of the front connecting seat, a front clamping seat is slidably connected to the front connecting seat, and a front Z-axis handle that drives the front clamping seat to move up and down is provided in the front connecting seat, A front clamping plate is slidably installed on the front clamping seat, and one end of the front clamping seat is provided with a front X-axis thrust rod that drives the front clamping plate to move in the left and right direction.

As preferred in the present invention, the rear clamping device includes a rear fixing seat fixedly installed on the support frame, a rear connecting seat is slidably installed on the rear fixing seat, and a rear connecting seat is provided on the rear fixing seat to drive the rear connection The rear Y-axis handle that moves in the front and rear directions of the seat, the rear clamping seat is slidably connected to the rear connecting seat, and the rear Z-axis handle that drives the rear clamping seat to move in the up and down direction is arranged in the rear connecting seat, so A rear clamping plate is slidably installed on the rear clamping seat, and one end of the rear clamping seat is provided with a rear X-axis thrust rod that drives the rear clamping plate to move in the left and right direction; the two ends of the rear clamping seat The end is fixed with a rotary cylinder for clamping the fixed frame.

As preferred in the present invention, the ink scraping device includes a printing plate slidably installed on the support frame, an inkjet connecting plate and an ink scraping connecting plate are installed in parallel directly under the printing plate, and the inkjet connecting plate and the inkjet connecting plate are connected in parallel. Both ends of the ink scraping connecting plate are equipped with a fine-tuning device, the fine-tuning device includes a fine-tuning seat installed on the printing plate, a fine-tuning handle and a fine-tuning shaft fixedly connected to the fine-tuning handle are installed in the fine-tuning seat, and the inkjet connecting plate It includes an inkjet seat that is adjustable and connected to the fine-tuning shaft, and an inkjet plate is detachably connected to the bottom of the inkjet seat, and several inkjet tubes are arranged on the inkjet plate, and the ink scraper connection plate includes A scraper seat that is adjustably connected to the fine-tuning shaft, and a scraper plate is detachably connected to the scraper seat.

A printing method, the operation steps of which are as follows: S1, adjust the rear clamping device on the printing device in the three directions of X axis, Y axis and Z axis and record the values displayed in the two directions of X axis and Z axis value;

S2, adjust the front clamping device on the printing device in the X-axis and Z-axis directions according to the recorded values, the values of the front clamping device on the printing device in the X and Z directions and the The values in the X and Z directions on the rear clamping device are the same; and the fixing frame is fixed between the front clamping device and the rear and front clamping device;

S3, making the screen printing screen to be printed and fixing the screen printing screen in the fixed frame;

S4, place the product to be printed on the printing table, and the positioning device directly below the printing table locks the printing table accordingly;

S5, the printing device prints the pattern in the screen printing screen on the product; after the printing is completed, the printing table moves the product under the next printing device.

The beneficial effects of the present invention are as follows: 1. Positioning and locking of the printing table is performed by the positioning device, and the positioning device performs positioning and locking of the printing table before the printing device prints the product. At the same time, it avoids the operator's secondary positioning and positioning of the product, and improves the printing quality. Reduce labor costs.

2. Since the printing device can be turned over, when printing similar products, the printing device corresponding to the color that does not need to be printed is turned over to maintain a certain angle relationship with the column, and the required printing color is installed on another printing device. You can start printing similar products. Therefore, the flexibility of the device during operation is enhanced. Turning over the printing device corresponding to the color that does not need to be printed can also ensure that the residual ink on the screen printing screen drips onto the product through the mesh holes on the screen printing screen.

3. Since the front clamping device and the rear clamping device can be adjusted in the three directions of X, Y, and Z, it is only necessary to adjust the front clamping device and the rear clamping device of the first printed pattern The external placement of the subsequent front clamping device and rear clamping device can be adjusted according to the position of the first front clamping device and rear clamping device. Shorten the preparation work before printing. In this way, the alignment-free position of subsequent printing stations can be realized.

Description of drawings

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

Fig. 2 is a three-dimensional schematic view of the driving mechanism of the present invention.

Fig. 3 is an enlarged schematic diagram of A in the present invention.

Fig. 4 is a three-dimensional exploded schematic view of the printing device of the present invention.

Fig. 5 is a sectional view of the front clamping device of the present invention.

Fig. 6 is a sectional view of the rear clamping device of the present invention.

Description of reference numerals: 1. frame, 101. guide rail, 102. connection plate, 103. guide wheel, 104. guide groove, 105. connection column, 106. connection block, 107. guide wheel, 108. power seat, 109 .sprocket, 110. double chain, 111. drive motor, 112. rack, 113. positioning column, 114. positioning slot,

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

3. Column,

4. printing device, 41. support frame, 42. fixed frame, 43. front clamping device, 44. scraping ink device, 45. rear clamping device, 401. support rod, 402. sliding seat, 403. roller, 404 .Pulley, 405. Toothed belt, 406. Driving motor, 407. Connecting frame, 408. Connecting foot, 409. Connecting shaft, 410. U-shaped seat, 411. Locking plate, 413. Strip hole, 414. Front Fixing seat, 415. Cross guide rail, 416. Front connecting seat, 417. Y-axis cylinder, 418. Linear guide rail, 419. Front clamping seat, 420. Drive rod, 421. Front Z-axis handle, 422. Slide guide rail, 423 .Front clamping plate, 424. Transition plate, 425. Front X-axis thrust rod, 426. Rear fixing seat, 427. Rear connecting seat, 428. Rear Y-axis handle, 429. Adjusting rod, 430. Rear clamping seat, 431. Rear Z-axis handle, 432. Rear clamping plate, 433. Rear X-axis thrust rod, 434. Rotary cylinder, 435. Printing plate, 436. Fine-tuning seat, 437. Fine-tuning handle, 438. Fine-tuning shaft, 439. Scraping Ink seat, 442. adjusting hole, 444. clamping plate, 445. locking handle, 446. ink scraping plate, 447. inkjet seat, 448. inkjet plate,

5. Positioning device, 501. Positioning plate, 502. Cylinder seat, 503. Positioning seat, 504. Rotating rod, 505. Positioning rod, 506. Driving cylinder, 507. Through hole, 508. Clamping part.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

Please refer to Figs. 1-6, the present invention relates to a multi-color printing production line, which includes a frame 1 on which several printing tables 2 for placing products are slidably connected. Several printing stations 2 are combined into a closed and linked oval conveying line, and several columns 3 are arranged in a straight line in the conveying line. The column 3 is fixedly installed on the frame 1, and the two sides of the column 3 are symmetrically installed with the printing device 4, and the printing device 4 is reversibly installed on the column 3, and each printing device 4 is provided with a locking mechanism for the printing table 2. Positioning device 5. During use, firstly, the screen printing screen is fixedly installed in the printing device 4 , and the installation position of the screen printing screen is fine-tuned, and the product to be printed is placed on the printing table 2 . The equipment is started, and the printing station 2 moves the product to be printed to directly below the printing device 4 . The positioning device 5 positions and locks the printing table 2 before the printing device 4 prints the product. It is avoided that the displacement of the printing table 2 affects the printing quality during the printing process. Because the positioning device 5 can fix the printing table 2 before printing. Therefore, there is no need to manually reposition the product during product printing to ensure the accuracy of the printing position. At the same time, the printing table 2 can be linked. When printing multi-color patterns, it is only necessary to install the screen printing screens of different colors on the adjacent printing decorations, which can complete the entire printing process, and only one person is required to place the product during the entire printing process. Operators on and off the printing table 2. Compared with the traditional printing process, the efficiency is higher and the labor cost is lower. At the same time, when printing similar products, such as products with the same pattern and different colors, since the printing device 4 can be turned over, when printing similar products, the printing device 4 corresponding to the color that does not need to be printed is turned over to maintain a certain clip with the column 3 Angle relationship, install the required printing color on another printing device 4. You can start printing similar products. Therefore, the flexibility of the device during operation is enhanced. Turning over the printing device 4 corresponding to the color that does not need to be printed can also ensure that the residual ink on the screen printing screen drops onto the product through the mesh holes on the screen printing screen.

Please refer to Fig. 2-3, in order to realize that several printing tables 2 can move and link on the frame 1, a driving mechanism for driving several printing tables 2 to move is also provided on the frame 1, and the driving mechanism includes a sliding connection The linkage device on the frame 1 and the power device that drives the linkage device to move, the linkage device includes a closed elliptical guide rail 101 fixedly installed on the frame 1, the guide rail 101 is cylindrical, and the guide rail 101 is slidingly connected with the printing table 2 There are the same number of connection boards 102 , and each connection board 102 is equipped with a printing platform 2 . The front and rear ends of the connection plate 102 are fixedly equipped with guide groups with the same structure, and each group of guide groups has two guide wheels 103 with the same structure and oppositely arranged, the guide wheels 103 are mounted on the connection plate 102 through rotating shafts and bearings, The inner ring of the bearing is sleeved on the rotating shaft, and the guide wheel 103 is sleeved on the outer ring of the bearing. The rotating shaft is fixedly installed on the connecting plate 102 by means of welding or threading. 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 adapted to the guide rail 101 . The connecting plate 102 slides on the guide rail 101 by applying a pushing force on the connecting plate 102 by the power device.

When one of the connecting plates 102 moved on the guide rail 101, the other connecting plates 102 also moved simultaneously. Fixed connecting posts 105 were fixedly installed at the two ends of the connecting plates 102, and the connecting posts 105 were positioned between the two guide wheels 103. It is arranged on both sides of the connecting plate 102 opposite to the guide wheel 103 . A connecting block 106 is rotatably connected between the connecting columns 105 on two adjacent connecting plates 102 , bearings are fixedly installed on both ends of the connecting plates 102 , and the bearings are fixedly installed on the connecting columns 105 . In this way, two adjacent connecting plates 102 or three adjacent connecting plates 102 can smoothly pass through the arc section of the conveying line. At the same time, the transmission of thrust between two adjacent connecting plates 102 can also be realized, which can realize the linkage between two adjacent connecting plates 102 . For reducing the frictional force between the guide wheel 103 on the connecting plate 102 and the guide rail 101, the connecting plate 102 can be promoted by a small thrust, and two guide wheels 107 are rotated on the connecting plate 102, and the guiding wheel 107 is located at two Between the connecting columns 105 and adjacent to the connecting columns 105 , the outer surface of the guide wheel 107 abuts against the guide rail 101 . Guide wheel 107 can adopt the standard bearing purchased outside as guide wheel 107. A guide surface is provided at the contact between the guide rail 101 and the guide wheel 107 . The guide surface is arranged on the guide rail 101 . The design of the guide wheel 107 can share the weight of the connecting plate 102 and the printing table 2 to play a supporting role. Let the gravity directly act on the guide rail 101 vertically, thereby reducing the frictional force between the guide groove 104 and the guide rail 101 . Therefore, the thrust required to drive the connecting plate 102 to move is relatively small.

The power device includes a power base 108 installed on the frame 1. Two sprockets 109 are arranged in a straight line on the power base 108, and double chains 110 are sheathed on the two sprockets 109. One of the sprockets 109 is connected with a drive motor 111 , and the drive motor 111 is vertically installed 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, and the other side of the connecting plate 102 is rotatably installed with two positioning columns 113, and the positioning columns 113 are connected to the connecting plate 102 through bearings to achieve positioning Rotation of column 113. A positioning slot 114 coupled with the positioning device is provided between the two positioning posts 113 . When the driving motor 111 starts to run, the sprocket 109 on the power base 108 engages with one of the chains in the double-row chain 110 , so the double-row chain 110 starts to rotate. Since the other row of chains is connected to the rack 112 on the connecting plate 102, the double row of chains 110 drives the connecting plate 102 to move when rotating. It should be noted that in order to reduce the idle running time of the driving motor 111 , the distance between the two sprockets 109 is greater than the distance between the outermost edge of the rack 112 on two adjacent connecting plates 102 and the distance between adjacent tooth lobes. In this way, when the rack 112 on the last connecting plate 102 is about to leave the double-row chain 110 , the rack 112 on the next connecting plate 102 just meshes with the double-row chain 110 . When the product needs to be printed on the connecting plate 102, when the connecting plate 102 is positioned, the driving motor 111 stops working, and the positioning device 5 is engaged in the positioning slot 114. When the product needs to be transferred and does not need to be positioned, the positioning device 5 Push out from the positioning slot 114. The driving motor 111 runs, and the positioning of the connecting plate 102 can be effectively realized through the coupling connection between the positioning slot 114 and the positioning device 5 . Therefore, the positioning steps of the product when the operator prints the product are reduced, thereby improving work efficiency.

Positioning device 5 comprises the positioning plate 501 on the vertical installation frame 1, and the both sides of positioning plate 501 are fixedly installed with cylinder block 502 and positioning seat 503, and positioning seat 503 is provided with rotating rod 504, and the rotating rod 504 is connected with The positioning rod 505 and the driving cylinder 506 are installed horizontally in the cylinder seat 502 , and the positioning plate 501 is provided with a through hole 507 adapted to the positioning rod 505 . 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 locking portion 508 adapted to the positioning slot 114 . When it is necessary to position the connecting plate 102 , the output end of the driving cylinder 506 extends out to push the positioning rod 505 to rotate around the rotating rod 504 , and the clamping part 508 on the positioning rod 505 is clamped into the positioning slot 114 . In this way, the positioning of the connection board 102 is realized.

The printing table 2 includes a printing seat 201 fixedly connected to the connecting plate 102 on the linkage device, the connecting plate 102 is fixedly connected to the middle of the printing seat 201, and one end of the printing seat 201 is fixedly installed with a placement plate 202 for placing products. The other end of the printing seat 201 is fixedly equipped with a support wheel, and the frame 1 is also provided with a chute 203 adapted to the support wheel and a supporting device for supporting the printing seat 201. The supporting device and the chute 203 are relatively arranged on the drive The two sides of the mechanism are located below the printing unit 4 . The chute 203 is located inside the guide rail 101 and below the column 3 . In order to reduce the frictional force of the supporting wheels in the slide groove 203 , a cylindrical transition rod is provided on the top of the slide groove 203 . The support device includes a support base fixedly installed on the frame, a support cylinder is vertically installed on the support base, and a support rod is fixedly installed on the output end of the support cylinder.

Since the printing device 4 will exert a certain pressure on the printing plate 435 during operation, if there is no downward pressure, the silk screen printing cannot be performed or the effect of the silk screen printing is not good and the pattern is not clear. The pressure of the printing plate 435 acts on the printing seat 201, thereby spreading to the guide wheels 103 on the connecting plate 102, so that the asymmetric force on the guide rail 101 and the guide wheels 103 will cause different degrees of damage. By setting a supporting wheel on the end of the printing seat 201, and setting a chute 203 on the frame 1, a transition rod is arranged in the chute 203, and the support cylinder drives the pole to move upwards before printing to connect the pole with the printing seat. 201 contacts and provides an upward force to the printing seat 201 to offset part of the downward force and prolong the service life of the connecting plate 102 . The printing device 4 includes a support frame 41 rotatably mounted on the frame 1 , one end of the support frame 41 is rotatably mounted on the column 3 through a rotating shaft or a hinge, and a driving device is provided between the support frame 41 and the column 3 . A fixing device 43 for fixing the printing screen is fixedly installed on the supporting frame 41 , and a scraping device 44 for ink jetting and scraping is arranged in the middle of the fixing device 43 . The scraping device 44 is slidably installed on the support frame 41 . The driving device is arranged on the upper and lower sides of the support frame 41 opposite to the fixing device 43 . Can be rotatably connected on the support frame 41 by the support frame 41, in the continuous production line, when the difference of the printed color and the pattern of printing are different, it is only necessary to rotate the unnecessary support frame 41, and there is no need to adjust the support frame. 41, the inner printing screen is replaced or taken out. Shorten the preparation time before printing to improve production efficiency.

Please refer to shown in Fig. 4-6, printing device 4 packs the support frame 41 that is rotatably connected on the column 3 and the front clamping device 43 and the rear clamping device 45 that are fixedly installed on the bottom two ends of the support frame, the front clamping device 43 and the rear clamping device 45. The rear clamping device 45 bracket is provided with a scraping device 44, and the scraping device 44 is slidably installed on the support frame 41, and a fixing device for installing a screen printing screen is fixedly installed between the front clamping device 43 and the rear clamping device 45. Rack 42.

The support frame 41 is provided with a sliding device for connecting the scraping device 44 and a transmission device for driving the sliding device to slide in the support frame 41 . The sliding device includes a support rod 401 fixedly installed in the support frame 41 and arranged in parallel. The support rods 401 are cylindrical, and a sliding seat 402 is arranged between the two support rods 401. Several rollers 403 adapted to the support rods 401 are installed on the upper rotation of the sliding seat 402, and several rollers 403 are located on the two support rods 401. Between, the circumference of the roller 403 is provided with a supporting groove adapted to the shape of the support rod 401 , and the roller 403 is installed on the sliding seat 402 through bearing rotation. When a certain force is exerted on the sliding seat 402 , the sliding seat 402 slides between the supporting bars 401 through the cooperation of the rollers 403 and the supporting bars 401 . The ink scraping device 44 is fixedly installed on the slide seat 402 to realize the movement of the ink scraping device 44 . The support frame 41 is also provided with a transmission device that provides power for the sliding seat 402. The transmission device includes belt pulleys 404 fixedly installed at the two ends of the support frame 41. The two pulleys 404 are sleeved with a toothed belt 405, and the middle part of the sliding seat 402 is provided with a toothed belt. There is a rectangular driving hole adapted to the toothed belt 405, the top surface of the driving hole is provided with convex teeth matched with the toothed belt 405, the end of the support frame 41 is provided with a drive motor 406 fixedly installed, and a drive motor 406 is provided. The output end is connected with the pulley 404 by a synchronous belt transmission. The driving motor 406 is rotating to drive the toothed belt 405 to rotate between the two pulleys 404, and the toothed belt 405 and the rack 112 on the sliding seat 402 cooperate to realize sliding of the sliding seat 402 between the two support rods 401 .

Please refer to the figure, the driving device includes a connecting frame 407 connected between the supporting frame 41 and the column 3, one end of the connecting frame 407 is connected with the column 3, and the other end of the connecting frame 407 is movably connected with the supporting frame 41, and connected One end of frame 407 is fixedly installed with connection cylinder, and the body of connection cylinder is installed in connection frame 407 and is positioned at connection end that connection frame 407 and column 3 are fixed, and the output end of connection cylinder is connected with column 3. The other end of the connecting frame 407 is provided with two connecting pins 408, a connecting shaft 409 is fixedly connected between the two connecting pins 408, a U-shaped seat 410 is fixedly installed on the support frame 41, and the connecting shaft 409 is movably connected to the U-shaped seat 410 superior. Strip holes 413 are provided on both sides of the U-shaped seat 410 . The connecting shaft 409 is installed in the bar-shaped hole 413 . The U-shaped seat 410 is located between the two connecting feet 408 and is movably connected through the connecting shaft 409 . Thus, the connecting frame 407 is movably connected with the supporting frame 41 . In order to ensure that the relative position of the support frame 41 will not change during operation or when the air source of the cylinder is cut off, and to facilitate the adjustment of the angle between the support frame 41 and the column 3 . 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 at one end of the U-shaped seat 410 through a rotating shaft. The rotation shaft is adjacent to the bar-shaped hole 413 . Two sides of the locking plate 411 are provided with several locking slots adapted to the connecting shaft 409 . The lock groove is a U-shaped groove. In use, the connecting shaft 409 is arranged at different positions in the bar-shaped hole 413 . After the locking plate 411 is rotated around the rotation axis, the locking plate 411 is snapped into the U-shaped seat 410 . When the locking plate 411 is fastened, the locking groove on the locking plate 411 is snapped onto the connecting shaft 409 . Therefore, the position of the connecting shaft 409 in the bar-shaped hole 413 is fixed, so as to achieve the adjustment angle of the support frame 41 . Due to the limited extension length of the cylinder. When the connecting shaft 409 is located in the bar-shaped hole 413, it is close to the bracket. Then the rotation angle of the support frame 41 is larger. When the connecting shaft 409 is in the bar-shaped hole 413 the position is away from the bracket. Then the rotation angle of the support frame 41 is smaller.

The front clamping device 43 includes a front fixed seat 414 fixedly installed on the support frame 41, two cross guide rails 415 are horizontally installed on the front fixed seat 414, and a front connecting seat 416 is fixedly installed on the cross guide rail 415, and the two cross guide rails 415 A Y-axis cylinder 417 is arranged between them, and the output end of the Y-axis cylinder 417 is fixedly connected with the front connecting seat 416 . The Y-axis cylinder 417 is used as a power source to drive the front connecting base 416 to move forward and backward (Y-axis) on the front fixing base 414 . When the rear clamping device 45 is in a fixed state, the Y-axis cylinder 417 will push the front connecting seat 416 to move towards the rear clamping device 45, so that the fixed frame 42 is installed between the front clamping device 43 and the rear clamping device 45 more stable. Two parallel linear guide rails 418 are vertically installed in the front connecting seat 416 , and mounting holes are arranged between the two linear guide rails 418 , and the front and rear directions of the mounting holes run through the front connecting seat 416 . One end of the linear guide rail 418 extends toward the bottom of the connecting seat 416 and is located outside the connecting seat 416 . A front clamping seat 419 is fixedly installed on the linear guide rail 418 , and the front clamping seat 419 is located directly below the front connecting seat 416 . The front clamping seat 419 is fixedly connected with a front Z-axis handle 421 which drives the front clamping seat 419 to move up and down (Z-axis). The front Z-axis handle 421 is located in the installation hole, and the front Z-axis handle 421 is screwed with a driving rod 420 , 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 and the other end is fixedly connected with the front clamping seat 419 , and the outer surface of the front Z-axis handle 421 is provided with a Z-axis digital scale. The rotation of the front Z-axis handle 421 can drive the driving rod 420 to move up and down, thereby driving the front clamping seat 419 to move up and down (Z-axis) along the linear guide rail 418 . At the same time, a Z-axis digital scale is provided on the front Z-axis handle 421. It should be noted that there is a scale "0" in the Z-axis digital scale, and the Z-axis digital scale "0" marks the origin in the Z-axis direction. The Z-axis digital scale can intuitively read the distance that the front clamping seat 419 moves up and down. A sliding guide rail 422 is horizontally installed in the front clamping seat 419, and a front clamping plate 423 is fixedly installed on the sliding guide rail 422. The front clamping seat 419 is positioned at one side of the front clamping seat 419 and is adjacent to the rear clamping device 45. One end of the front clamping seat 419 is provided with a front X-axis thrust rod 425 for driving the front clamping plate 423 , and the front X-axis thrust rod 425 is fixedly connected to the front clamping plate 423 through a transition plate 424 . One end of the front clamping seat 419 is provided with a spring, and one end of the spring is fixedly connected with the front clamping seat 419 , and the other end is fixedly connected with the front clamping plate 423 . The front clamping plate 423 is provided with an X-axis scale, and the front clamping seat 419 is provided with an X-axis digital mark matching the X-axis scale. The digital mark of the present invention is "0", and it should be noted that the digital mark "0" of the X-axis also marks the origin of the front clamping plate 423 in the X-axis direction, and 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 connected with the hexagonal wrench hole, and when the hexagonal wrench passes through the driving hole and snaps into the hexagonal wrench hole, the front X-axis thrust is driven to rotate, and the front X-axis thrust rod 425 The rotation drives the clamping plate to move along the linear guide rail 418 in the left and right (X axis) direction. Because it is threaded connection between the front X-axis thrust rod 425 and the front connecting seat 416 . There is a certain gap between the external thread and the internal thread in the normal state. When the scraping device 44 is in operation, the front clamping plate 423 may be displaced. By arranging a spring at the other end of the front clamping seat 419, the spring is in an energy storage state and the spring's rebound force offsets the gap so as to avoid the movement of the front clamping plate 423 of the scraping device 44 during operation. The linear guide rails, sliding guide rails and cross guide rails mentioned above are standard guide rails purchased from outside.

Rear clamping device 45 comprises the rear fixed seat 426 that is fixedly installed on the support frame 41, and two cross guide rails 415 are horizontally installed on the rear fixed seat 426, and rear connection seat 427 is fixedly installed on the cross guide rail 415, and on the rear connection seat 427 There is a rear Y-axis handle 428 that drives the rear connecting seat 427 to move forward and backward (Y-axis). The rear Y-axis handle 428 is threaded with an adjustment rod 429 , and one end of the adjustment rod 429 is threaded with the rear connection seat 427 . The other end extends toward the front clamping device 43 and passes through the rear fixing seat 426 , and the rear Y-axis handle 428 abuts against the front fixing seat 414 . Both sides of the adjusting rod 429 are provided with springs, one end of the spring is fixedly connected with the rear fixing seat, and the other end is fixedly connected with the rear connecting seat 427 . The rear connecting seat 427 is slidingly connected by the rear clamping seat 430. The rear connecting seat 427 is provided with a rear Z-axis handle 431 that drives the rear clamping seat 430 to move up and down (Z axis). The rear clamping seat 430 is slide-mounted. There is a rear clamping plate 432, and one end of the rear clamping seat 430 is provided with a rear X-axis thrust rod 433 that drives the rear clamping plate 432 to move along the left and right (X-axis) directions. Both ends of the rear clamping seat 430 are fixedly mounted with rotary cylinders 434 for installing the fixed frame 42 . Both ends of the fixing frame are respectively connected with the front clamping plate 423 and the rear clamping plate 432 . It should be noted that the fixed connection is that the rear connection base 427 is provided with the same Y-axis scale as the X-axis scale. The same Y-axis number mark as the X-axis number mark is set on the rear fixing base, and the same Z-axis number scale as the front Z-axis handle 421 is set on the rear Z-axis handle 431 . The rear clamping plate 432 is provided with the same X-axis scale as the X-axis scale. The rear clamping seat 430 is provided with the same X-axis number mark as the X-axis number mark, and the connection mode between 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 connection mode between the rear clamping plate 432 and the rear clamping seat 430 is the same as the connection mode between the front clamping plate 423 and the front clamping seat 419 .

When in use, the fixed frame 42 is connected with the rear splint and the rotary cylinder 434 is used to initially fix the fixed frame 42 . By adjusting the rear Y-axis handle 428, the rear X-axis handle, and the rear Z-axis handle 431, the rear clamping device 45 can all return to the original position or move to a certain scale in the three directions of X, Y, and Z. Through the front X-axis handle and the front Z-axis handle 421, adjust the same scale of the front clamping device 43 in the Z-axis direction and the X-axis direction and the rear clamping device 45. The Y-axis cylinder 417 drives the front connecting seat 416 to move toward the rear clamping device 45 . Thus, the fixing frame 42 is fixed.

Squeegee device 44 comprises the printing plate 435 that is fixedly connected with the sliding seat 402 in the support frame 41, and the printing plate 435 is directly below the printing plate 435 and is equipped with inkjet connecting plate and scraping ink connecting plate in parallel, and the inkjet connecting plate and scraping ink connecting plate Fine-tuning devices are installed at both ends, and the fine-tuning devices are respectively an inkjet fine-tuning device and a scraping ink fine-tuning device. The fine-tuning seat 436 on the plate 435, the fine-tuning handle 437 and the fine-tuning shaft 438 fixedly connected with the fine-tuning handle 437 are installed in the fine-tuning seat 436, and the fine-tuning shaft 438 runs through the printed board 435 and is positioned at the printed board 435 just below. It should be noted that the internal structure of the inkjet fine-tuning device and the scraping ink fine-tuning device are the same as that of the micrometer in the prior art, and their purpose of use is also the same. Adjusting the distance between the inkjet connection plate or the ink scraping connection plate and the printing screen by rotating the fine adjustment handle 437 can effectively improve the printing quality. The ink scraping connecting plate includes an ink scraping seat 439 that can be adjusted and connected with the fine-tuning shaft 438 of the ink scraping fine-tuning device. Both ends of the ink scraping seat 439 are provided with adjustment plates, and the adjustment plate is provided with a fixing hole for connecting the ink scraping seat 439. The fixing hole is adjacent to the wiper seat 439, and an arc-shaped adjusting hole 442 is arranged above the fixing hole. The screw is threaded through the fixing hole and the output shaft of the ink scraping fine-tuning device, and the screw is threaded through the arc-shaped adjustment hole 442 and the output shaft of the ink scraping fine-tuning device. When it is necessary to adjust the inclination angle of the scraping seat 439, loosen the screws in the fixing hole and the adjustment hole 442, and use the screw in the fixing hole as the axis of rotation to make the scraping seat 439 rotate around the screw in the fixing hole. When the angle is set, the screw in the adjusting hole 442 is tightened again, and the screw in the fixing hole is tightened. Thereby realize the angle adjustment of scraping ink seat 439. The bottom surface of the ink scraping seat 439 is provided with a clamping groove near the side of the inkjet connecting plate, and a clamping plate 444 is installed on the side of the ink scraping seat 439, and the middle locking handle 445 of the clamping plate 444, and the locking handle 445 The end part passes through the clamping plate 444 and is screwed to the wiper seat 439 . Between the bottom of the clamping plate 444 and the ink scraping seat 439, there is the same draw-in groove as the snap-in groove. A squeegee 446 is installed indoors. Since the locking handle 445 is threadedly connected to the ink scraping seat 439, and the locking handle 445 passes through the clamping plate 444 at the same time, the clamping plate 444 can be fixed on the ink scraping seat 439 by the locking handle 445, thereby realizing the scraping The ink plate 446 is fixed in the buckle chamber, and gaskets of different thicknesses are added between the scraper seat 439 and the clamping plate 444 to adjust the size of the buckle chamber. Can meet the size of different squeegee 446. It should be noted that the gaskets described here are standard parts. Both sides of the top of the squeegee 446 are provided with buckling parts adapted to the buckling grooves. The bottom of the squeegee 446 is provided with a fixing groove passing through the squeegee 446 . A scraper is installed in the fixing groove, and both sides of the ink scraper 446 are provided with several threaded holes running through the fixing groove, and the width of the fixing groove is changed by screwing screws in the threaded holes. Thus, the scraper can be detachably installed in the fixing groove.

The inkjet connection plate includes an inkjet seat 447 that is adjustable and connected to the fine-tuning shaft 438 of the fine-tuning device. The bottom of the inkjet seat 447 is detachably connected with an inkjet board 448, and several inkjet tubes are arranged on the inkjet board 448. It should be noted that the inkjet tube described here can adopt a printing machine ink switching device disclosed in the Chinese utility model patent with the application number CN201921133954.4. The connection mode of the output shaft of the inkjet seat 447 and the inkjet fine-tuning device is the same as the connection mode of the ink scraping seat 439 and the output shaft of the inkjet fine adjustment device, and the connection mode of the inkjet plate 448 and the inkjet seat 447 is the same as that of the ink scraper plate 446. It is the same as the connection method of ink scraping seat 439.

The present invention also provides a printing method, the operation steps of which are as follows: first, adjust the rear clamping device 45 on the printing device 4 in the three directions of X-axis, Y-axis and Z-axis and record the two directions of X-axis and Z-axis. The value displayed in one direction.

Secondly, according to the adjustment of the front clamping device 43 on the printing device 4 on the X-axis and the Z-axis according to the recorded numerical value, the numerical value and the value of the front clamping device 43 on the printing device 4 on the X and Z directions The values in the X and Z directions on the rear clamping device 45 on the printing device 4 are the same. And the fixing bracket 42 is fixed between the front clamping device 43 and the rear front clamping device 43 .

Thirdly, make the screen printing screen to be printed and fix the screen printing screen in the fixed frame 42, and the different printing patterns in the screen printing screen are made from the same origin. For example, different groups and different colors need to be printed on a product. Since the shape of the screen printing screen is a regular quadrilateral, such as a square, a rectangle, a parallelogram, etc., a uniform direction is used to make the screen printing screen while making the screen printing screen, and a uniform point or edge is used as a reference , and then make the desired pattern on the screen of the screen printing screen. That is to say, a certain point in the patterns in different screen printing screens is in the same relative position as a certain side of the frame of the screen printing screen and a certain point.

Again, the product to be printed is placed on the printing table 2, and the positioning device 5 directly below the printing table 2 locks the printing table 2 accordingly.

Most have printing device 4 to print the pattern in the screen printing screen on the product. After the printing is completed, the printing table 2 moves the product below the next printing unit 4 until the product is printed.

Because the relative positions of the patterns in different screen printing screens of the same product are the same. Therefore only need by adjusting the external setting of the front clamping device 43 of the first printed pattern and the rear clamping device 45, the external setting of the subsequent front clamping device 43 and the rear clamping device 45 is according to the first front clamping device The positions of the device 43 and the rear clamping device 45 can be adjusted. Shorten the preparation work before printing. In this way, the alignment-free position of subsequent printing stations can be realized. It should be noted that before continuous printing, it is necessary to adjust the printing color, position and color. Therefore, the adjustment of the front clamping device 43 and the rear clamping device 45 required for the first printing process has been completed in the process of printing debugging. Subsequent printing processes only need to install the values recorded in the first printing process for adjustment. Then there is no need to adjust each process.

Since the product is automatically run to the next printing job on the printing table 2, the printing positioning device 5 positions and fixes the printing table 2 each time, thereby avoiding the adjustment of the printing table 2 and the adjustment of the printing table 2 during the printing process. products are adjusted. Thus, the alignment-free printing platform 2 is realized. Through the alignment-free adjustment of the fixing device 43 and the alignment-free adjustment of the printing table 2, there is no need for secondary positioning of the screen printing screen and the product during the entire printing process, and the effect of alignment-free is achieved.

The above embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and modifications made by ordinary engineers and technicians in the field to the technical solutions of the present invention Improvements should all fall within the scope of protection determined by the claims of the present invention.

Claims (10)

1. A multi-color printing production line, comprising a frame, characterized in that, the frame is slidably connected with several printing tables for placing products; several of the printing tables are combined into a closed and linked oval conveying There are several uprights arranged in a straight line in the conveying line; the uprights are fixedly installed on the frame, and printing devices are installed symmetrically on both sides of the uprights, and the printing devices can be flipped and connected to the On the column, a positioning device for locking the printing table is provided directly below each printing device. 2. The multi-color printing production line according to claim 1, characterized in that: the frame is also provided with a drive mechanism that drives several printing tables to move, and the drive mechanism includes a linkage device that is slidably connected to the frame And a power device that drives the linkage device to move, the linkage device includes a closed elliptical guide rail fixedly installed on the frame, the same number of connecting plates as the printing table are slidably connected on the guide rail, and two adjacent A connecting block is rotatably connected between the connecting plates, and the power device includes a power base installed on the frame, and two sprockets are arranged in a straight line on the power base, and the two sprockets are sleeved with A double-row chain; one side of the connecting plate is provided with a rack adapted to the double-row chain, and the other side of the connecting plate is rotatably installed with two positioning columns, and a positioning column is arranged between the two positioning columns. There is a positioning card slot coupled with the positioning device. 3. The multi-color printing production line according to claim 2, characterized in that: the positioning device includes a positioning plate vertically installed on the frame, and cylinder seats and positioning seats are fixedly installed on both sides of the positioning plate , the upper positioning rod is installed in rotation in the positioning seat, and the driving cylinder is horizontally installed in the cylinder seat, and one end of the positioning rod passes through the positioning plate and is fixedly connected with the output end of the driving cylinder; the other end of the positioning rod A clamping portion adapted to the positioning slot is provided. 4. The multi-color printing production line according to claim 1, characterized in that: the printing station includes a printing seat slidingly mounted on the frame, and one end of the printing seat is fixedly installed with a placement plate for placing products; The other end of the printing seat is fixedly installed with a supporting wheel, and the frame is also provided with a chute adapted to the supporting wheel and a supporting device for supporting the printing seat. The supporting device and the sliding The slots are oppositely arranged on both sides of the drive mechanism and below the printing device; the chute is located inside the guide rail and below the column; the support device includes a support seat fixedly installed on the frame, and the support A support cylinder is vertically installed on the seat, and a strut is fixedly installed on the output end of the support cylinder. 5. The multi-color printing production line according to claim 1, characterized in that: the printing device includes a support frame rotatably connected to the column, and a front clamping device and a rear clamping device fixedly installed at both ends of the bottom of the support frame. device, the front clamping device and the rear clamping device bracket are provided with scraping device, the scraping device is slidably installed on the support frame, between the front clamping device and the rear clamping device A fixed frame for installing the screen printing screen is fixedly installed between them, and a sliding device and a transmission device are arranged in the supporting frame, and the sliding device includes a support rod fixedly installed in the supporting frame and arranged in parallel; the two A sliding seat is provided between the support rods, and the transmission device includes pulleys fixedly installed at both ends of the support frame. A toothed belt is set on the two pulleys, and the middle part of the sliding seat is provided with a toothed belt. The protruding teeth are adapted, and a drive motor is fixedly installed at the end of the support frame, and the output end of the drive motor is connected to the pulley in transmission. 6. The multi-color printing production line according to claim 5, characterized in that: the driving device includes a connecting frame connected between the support frame and the column, and one end of the connecting frame is fixedly installed with a connecting cylinder , the output end of the connecting cylinder is connected to the column; the other end of the connecting frame is provided with two connecting pins, and a connecting shaft is fixedly connected between the two connecting pins, and a connecting shaft is fixedly installed on the supporting frame. U-shaped seat, the connecting shaft is movably connected in the U-shaped seat; a locking plate is rotatably installed in the U-shaped seat, and there are several locking plates on both sides of the locking plate that are adapted to the connecting shaft. lock slot. 7. The multi-color printing production line according to claim 5, characterized in that: the front clamping device includes a front fixing seat fixedly installed on the support frame, and a front connecting seat is slidably installed on the front fixing seat , the front fixing seat is provided with a Y-axis cylinder that drives the front connecting seat to move forward and backward, the front connecting seat is slidably connected with a front clamping seat, and the front connecting seat is provided with a drive to drive the front clamping seat. The front Z-axis handle that the tight seat moves in the up and down direction, the front clamping plate is slidably installed on the front clamping seat, and one end of the front clamping seat is provided with the front X axis that drives the front clamping plate to move in the left and right direction thrust rod. 8. The multi-color printing production line according to claim 5, characterized in that: the rear clamping device includes a rear fixing seat fixedly installed on the support frame, and a rear connecting seat is slidably installed on the rear fixing seat, so that The rear fixing seat is provided with a rear Y-axis handle that drives the rear connecting seat to move in the front and rear directions. The rear Z-axis handle that the seat moves in the up and down direction, the rear clamping plate is slidably installed on the rear clamping seat, and one end of the rear clamping seat is provided with a rear X that drives the rear clamping plate to move in the left and right direction A shaft thrust rod; two ends of the rear clamping seat are fixedly installed with rotating cylinders for clamping the fixed frame. 9. The multi-color printing production line according to claim 5, characterized in that: the ink scraping device includes a printing plate slidingly installed on the support frame, and an inkjet connection plate and a scraper are installed in parallel directly below the printing plate. Ink connecting plate, both ends of the inkjet connecting plate and the scraping ink connecting plate are equipped with a fine-tuning device, the fine-tuning device includes a fine-tuning seat installed on the printing board, a fine-tuning handle and a fine-tuning handle The fine-tuning shaft fixedly connected, the inkjet connection plate includes an inkjet seat that is adjustable and connected to the fine-tuning shaft, the bottom of the inkjet seat is detachably connected with an inkjet board, and the inkjet board is provided with several An inkjet tube, the scraper connecting plate includes a scraper seat that is adjustably connected to the fine-tuning shaft, and a scraper is detachably connected to the scraper seat. 10. A printing method, used for the multi-color printing production line described in any one of claims 1-9, its operation steps are as follows: S1, after the clamping device on the printing device is positioned on the X-axis, Y-axis, Z Adjust in the three directions of the axis and record the values displayed in the two directions of the X axis and the Z axis; S2, adjust the front clamping device on the printing device in the X-axis and Z-axis directions according to the recorded values, the values of the front clamping device on the printing device in the X and Z directions and the The values in the X and Z directions on the rear clamping device are the same; and the fixing frame is fixed between the front clamping device and the rear and front clamping device; S3, making the screen printing screen to be printed and fixing the screen printing screen in the fixed frame; S4, place the product to be printed on the printing table, and the positioning device directly below the printing table locks the printing table accordingly; S5, the printing device prints the pattern in the screen printing screen on the product; after the printing is completed, the printing table moves the product under the next printing device.

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