CN107175926A - A kind of pair of jet head sets alternative printing digital inkjet printing machine and printing method - Google Patents

Abstract

The present invention provides a kind of pair of jet head sets alternative printing digital inkjet printing machine and printing method, including support system, it is connected with the left direction of support system on left outside, under left outside, on left inside, left inside lower connecting rod, it is connected with right direction right outside upper, under outside right, on in right, lower connecting rod in right, on left outside, the first nose assembly is connected with right outer upper connecting rod, on left inside, in right the second nose assembly is connected with upper connecting rod, the both sides head connection montant bottom of nose assembly is connected with the roller by being driven by motor, the top of head connection montant is the elevating lever lifted by motor control, so as to which the action by the liftings of two jet head sets coordinates that realizes two jet head sets to be used interchangeably stamp, then stamp efficiency is improved, improve printing quality.

Description

A digital inkjet printing machine and printing method for alternate printing with double nozzle groups

technical field

The invention relates to the new technology field of digital ink-jet printing, in particular to a digital ink-jet printing machine and printing method for double-nozzle group alternate printing.

Background technique

Digital inkjet printing technology is a high-tech product that integrates machinery, computer, electronic information technology and gradually formed with the continuous development of computer technology. It first appeared in the mid-1990s. The emergence and continuous improvement of this technology , has brought a new concept to the textile printing and dyeing industry, and its advanced production principles and methods have brought an unprecedented development opportunity to textile printing and dyeing. It is known as the textile industry revolution technology in the 21st century, and it will gradually replace traditional printing. The method has become the main equipment for textile printing. In recent years, digital inkjet printing technology at home and abroad has made great progress. Among them, the flatbed digital inkjet printing machine can realize personalized printing of garments, etc., and the technology has been continuously improved, and the types and functions of products have also been continuously improved.

For the fixed-head flatbed digital inkjet printing machine, the client submits the document to the PC host of the printing equipment, and the PC host converts the image information into corresponding printing control commands and The control command is sent to the printing controller to control the printing. During the printing process, firstly, the nozzle group moves a lead in the width direction of the fabric. During the movement, the jet printing controller controls whether the nozzles spray ink according to the obtained jet printing control command; secondly, the servo motor controls the printing plate in the direction of the fabric length. Move one printing width forward, and the two movements coordinate with each other to repeat the above process until the printing task is completed. Compared with the belt-type digital inkjet printing machine, for flat-bed digital inkjet printing equipment, how to increase the printing speed or the number of garments printed each time is the main problem currently facing.

In view of this, the present invention provides a digital inkjet printing machine and printing method for double nozzle group alternate printing, which adopts the double nozzle group connected to the inner and outer slideways through the lifting rod, and realizes two The nozzle group can be used alternately for printing, so as to improve printing efficiency and printing effect.

Contents of the invention

The technical problem to be solved by the present invention is to provide a digital inkjet printing machine and printing method for double-nozzle group alternate printing. Through the cooperation of the lifting action of the two nozzle groups, the alternate printing of the two nozzle groups can be realized, thereby improving the printing efficiency. Efficiency, improve printing effect.

In order to achieve the above object, the present invention relates to a digital inkjet printing machine with double nozzle group alternate printing, including a support system, the support system includes a left front support frame, a right front support frame, a left rear support frame and a right rear support frame. The tops of the left front support frame and the left rear support frame are fixedly connected with a left outer upper connecting rod and a left inner upper connecting rod, and the left outer upper connecting rod is located on the left side of the left inner upper connecting rod. The middle and upper part of the left rear support frame is fixedly connected with a left outer lower connecting rod and a left inner lower connecting rod. The left outer lower connecting rod is located on the left side of the left inner lower connecting rod. There is a slideway on the connecting rod, the left outer upper connecting rod and the left outer lower connecting rod are kept vertical, the left inner upper connecting rod and the left inner lower connecting rod are kept vertical, and the right front support frame and the right The top of the rear support frame is fixedly connected with a right outer upper connecting rod and a right inner upper connecting rod. There are right outer lower connecting rod and right inner lower connecting rod fixedly connected. The right outer lower connecting rod is located on the right side of the right inner lower connecting rod. There are slideways on the rod, the right inner lower connecting rod, the right outer upper connecting rod and the right outer lower connecting rod keep vertical, the right inner upper connecting rod and the right inner lower connecting rod keep vertical, the left The outer upper connecting rod and the right outer upper connecting rod are on the same horizontal line, the left inner upper connecting rod and the right inner upper connecting rod are on the same horizontal line, the left outer lower connecting rod, the left inner lower connecting rod, the right outer lower The connecting rod and the right inner lower connecting rod are on the same horizontal line, the distance between the left inner upper connecting rod, the right inner upper connecting rod and the left inner lower connecting rod, the right inner lower connecting rod is less than the left outer upper connecting rod, the right outer upper connecting rod The distance between the connecting rod and the left outer lower connecting rod and the right outer lower connecting rod, the first machine head assembly is connected to the left outer upper connecting rod and the right outer upper connecting rod, and the first machine head assembly includes the first The left machine head connecting vertical bar and the first right machine head connecting vertical bar, the top of the first left machine head connecting vertical bar is embedded and connected on the left outer upper connecting bar, and the first left machine head connecting vertical bar can be connected along the Sliding back and forth with the left outer upper connecting rod, a first roller is installed at the bottom of the first left machine head, and a first motor is installed inside the first roller, and the first roller is driven to rotate by the first motor , the top end of the first right machine head connecting vertical rod is embedded and connected to the right outer upper connecting rod, and the first right machine head connecting vertical rod can slide back and forth along the right outer upper connecting rod. The bottom of the machine head is equipped with a second roller, and a first machine head connecting cross bar is fixedly connected between the first left machine head connecting vertical bar and the first right machine head connecting vertical bar, and the first machine head The left end of the connecting cross bar is fixed on the lower part of the first left machine head connecting vertical bar, and the first left machine head connecting vertical bar above the connection point between the first machine head connecting cross bar and the first left machine head connecting vertical bar It is a liftable rod, the liftable rod part of the first left machine head connecting vertical rod is driven up and down by the second motor, and the right end of the first machine head connecting cross bar is fixed on the lower part of the first right machine head connecting vertical rod On the top, it is located at the connecting cross bar of the first machine head and the first right machine head The first right machine head connecting vertical bar above the connecting point of the vertical bar is a liftable bar, and the liftable bar part of the first right machine head connecting vertical bar is driven by the second motor to lift, and is connected on the left inner The rod and the upper right inner connecting rod are connected with a second machine head assembly, and the second machine head assembly includes a second left machine head connecting vertical bar and a second right machine head connecting vertical bar, and the second left machine head is connected The top of the vertical bar is embedded and connected on the left inner upper connecting rod, and the second left machine head connecting vertical bar can slide back and forth along the left inner upper connecting rod, and a third Roller, the third roller is equipped with a third motor inside, the third roller is driven by the third motor to rotate, the top of the second right machine head connecting vertical rod is embedded and connected to the right inner upper connecting rod, so The connecting vertical rod of the second right machine head can slide back and forth along the upper right inner connecting rod, and a fourth roller is installed at the bottom of the second right machine head, and the connecting vertical bar of the second left machine head and the first A second machine head connecting cross bar is fixedly connected between the two right machine head connecting vertical bars. The second left machine head connecting vertical bar above the connection point between the head connecting cross bar and the second left machine head connecting vertical bar is a liftable bar, and the liftable bar part of the second left machine head connecting vertical bar is driven by the fourth motor drive the lift, the right end of the second head connection bar is fixed on the lower part of the second right head connection vertical bar, and is located on the connection point between the second head connection bar and the second right head connection vertical bar. The second right machine head connecting vertical bar is a liftable bar, and the liftable bar part of the second right machine head connecting vertical bar is driven by the fourth motor to lift, and the first machine head connecting cross bar is connected with a first The nozzle group, the first nozzle group is driven by the fifth motor to slide back and forth along the first head connecting cross bar, the second nozzle group is connected to the second head connecting cross bar, the second nozzle group Driven by the sixth motor to slide back and forth along the second head connecting crossbar, the first nozzle group slides once on the first head connecting crossbar and the distance of the second nozzle group on the second head connecting crossbar The distance of one slide is equal, which is equal to the printing width of the fabric, and a printing plate is installed under the first nozzle group and the second nozzle group.

The present invention also relates to a digital ink-jet printing method for double-nozzle group alternate printing. Firstly, the fabric to be printed is flattened on the printing plate. When the fabric is printed with the first nozzle group, the fourth motor drives The liftable bar of the second left machine head connected to the vertical bar and the liftable bar of the second right machine head connected to the vertical bar rise to the highest, and the fourth motor stops working. , the right inner lower connecting rod is not in contact, the third motor and the sixth motor are in the stop working state, and at the same time, the second motor drives the liftable rod of the first left machine head connecting vertical bar and the first right machine head connecting vertical bar The liftable rod is lowered to the lowest level, and the second motor stops working. At this time, the first roller and the second roller are respectively in contact with the slideways of the left outer lower connecting rod and the right outer lower connecting rod. At this time, the first nozzle group and the second The nozzle group keeps a distance in the vertical direction, then first the fifth motor drives the first nozzle group to slide back and forth along the first head connecting cross bar, and then the first motor drives the first roller to move forward along the slideway of the left outer lower connecting rod Move one printing stroke, and at the same time drive the second roller to move forward one printing stroke along the slideway of the right outer lower connecting rod, thereby driving the first nozzle group to move forward one printing stroke, and continue until the first nozzle group Complete your own printing tasks; when you choose to use the second nozzle group to print fabrics, the second motor drives the liftable rod connected to the vertical bar of the first left machine head and the liftable bar connected to the vertical bar of the first right machine head to rise to the highest point, the second motor stops working. At this time, the first roller and the second roller are not in contact with the left outer lower connecting rod and the right outer lower connecting rod respectively. The four motors drive the second left machine head to connect the liftable bar of the vertical bar and the second right machine head to connect the liftable bar of the vertical bar to drop to the minimum, and the fourth motor stops working. The slideways of the inner lower connecting rod and the right inner lower connecting rod are in contact. At this time, the first nozzle group and the second nozzle group keep a vertical distance, and then the sixth motor drives the second nozzle group along the second machine head connecting horizontal direction. The rod slides back and forth, and then the third motor drives the third roller to move forward for a printing stroke along the slideway of the left inner lower connecting rod, and at the same time drives the fourth roller to move forward along the slideway of the right inner lower connecting rod One printing stroke, which drives the second nozzle group to move forward for one printing stroke, and lasts until the second nozzle group completes its own printing task.

The present invention adopts the double nozzle groups connected to the inner and outer slideways through the lifting rod, and realizes the alternate printing of the two nozzle groups through the cooperation of the lifting action of the two nozzle groups, thereby improving the printing efficiency and printing effect.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

detailed description

As shown in Figure 1, a digital inkjet printing machine with two nozzle groups alternately prints, including a support system. The support system includes a left front support frame 1, a right front support frame 2, a left rear support frame 3 and a right rear support frame 4. The top of the support frame and the left rear support frame is fixedly connected with the left outer upper connecting rod 5 and the left inner upper connecting rod 6, and the left outer upper connecting rod is positioned at the left side of the left inner upper connecting rod, between the left front support frame and the left rear support frame. The middle upper part is fixedly connected with the left outer lower connecting rod 7 and the left inner lower connecting rod 8, the left outer lower connecting rod is located on the left side of the left inner lower connecting rod, and there are slideways on the left outer lower connecting rod and the left inner lower connecting rod , the left outer upper connecting rod and the left outer lower connecting rod are kept vertical, the left inner upper connecting rod and the left inner lower connecting rod are kept vertical, and the right outer upper connecting rod is fixedly connected to the tops of the right front support frame and the right rear support frame 9 and right inner upper connecting rod 10, the right outer upper connecting rod is positioned at the right side of the right inner upper connecting rod, and is fixedly connected with the right outer lower connecting rod 11 and the right inner lower connecting rod at the middle upper part of the right front support frame and the right rear support frame 12. The right outer lower connecting rod is located on the right side of the right inner lower connecting rod. There are slideways on the left outer lower connecting rod, right outer lower connecting rod, left inner lower connecting rod, and right inner lower connecting rod. The rod and the right outer lower connecting rod are kept vertical, the right inner upper connecting rod and the right inner lower connecting rod are kept vertical, the left outer upper connecting rod and the right outer upper connecting rod are on the same horizontal line, the left inner upper connecting rod, the right inner upper connecting rod The upper connecting rod is on the same horizontal line, the left outer lower connecting rod, the left inner lower connecting rod, the right outer lower connecting rod and the right inner lower connecting rod are on the same horizontal line, the left inner upper connecting rod, the right inner upper connecting rod and the left inner The distance between the lower connecting rod and the right inner lower connecting rod is less than the distance between the left outer upper connecting rod, the right outer upper connecting rod and the left outer lower connecting rod, the right outer lower connecting rod, and the left outer upper connecting rod and the right outer upper connecting rod The first head assembly is connected to the top, and the first head assembly includes a first left machine head connecting vertical bar 15 and a first right machine head connecting vertical bar 17. The top end of the first left machine head connecting vertical bar is embedded and connected to the left outer On the upper connecting rod, the connecting vertical bar of the first left machine head can slide back and forth along the left outer upper connecting rod, and a first roller 16 is installed on the bottom of the first left machine head, and a first motor is installed inside the first roller , the first roller is rotated by the first motor, the top of the first right machine head connecting vertical bar is embedded and connected to the right outer upper connecting rod, the first right machine head connecting vertical bar can slide back and forth along the right outer upper connecting rod, The bottom of the first right machine head is equipped with second roller 18 additionally, is fixedly connected with the first machine head connecting cross bar 13 between the first left machine head connecting vertical bar and the first right machine head connecting vertical bar, the first The left end of the machine head connecting cross bar is fixed on the lower part of the first left machine head connecting vertical bar, and the first left machine head connecting point above the first left machine head connecting cross bar and the first left machine head connecting vertical bar is connected. The vertical bar is a liftable bar, and the liftable bar part of the first left machine head connected to the vertical bar is driven by the second motor to lift, and the right end of the first machine head connected to the horizontal bar is fixed on the lower part of the first right machine head connected to the vertical bar. The first right machine head connecting vertical bar above the connection point between the first machine head connecting cross bar and the first right machine head connecting vertical bar is a liftable bar, and the liftable bar part of the first right machine head connecting vertical bar is formed by the first right machine head connecting vertical bar. The second motor drives the lift, On the left inner upper connecting rod and the right inner upper connecting rod, the second machine head assembly is connected, the second machine head assembly includes the second left machine head connecting vertical bar 21 and the second right machine head connecting vertical bar 23, the second left The top of the connecting vertical bar of the machine head is embedded and connected to the left inner upper connecting rod, the second left connecting vertical bar can slide back and forth along the left inner upper connecting rod, and a third roller is installed at the bottom of the second left machine head 22. A third motor is installed inside the third roller, and the third roller is driven to rotate by the third motor. The top end of the second right machine head connecting vertical rod is embedded and connected to the right inner upper connecting rod, and the second right machine head is connected to the vertical rod. The bar can slide back and forth along the right inner upper connecting rod, and a fourth roller 24 is additionally installed at the bottom of the second right machine head, and is fixedly connected between the second left machine head connecting vertical bar and the second right machine head connecting vertical bar. There is a second machine head connecting cross bar 19, the left end of the second machine head connecting cross bar is fixed on the lower part of the second left machine head connecting vertical bar, located at the second machine head connecting cross bar and the second left machine head connecting vertical bar The second left machine head connection vertical bar above the bar connection point is a liftable bar, and the liftable bar part of the second left machine head connection vertical bar is driven by the fourth motor to lift, and the right end of the second machine head connection cross bar is fixed on the On the lower part of the second right machine head connection vertical bar, the second right machine head connection vertical bar on the connection point between the second machine head connection cross bar and the second right machine head connection vertical bar is a liftable bar. The liftable rod part of the connecting vertical bar of the machine head is driven by the fourth motor to lift, and the first nozzle group 14 is connected to the first head connecting horizontal bar, and the first nozzle group is driven by the fifth motor to connect along the first machine head. The crossbar slides back and forth, and the second nozzle group 20 is connected to the second head connection crossbar. The second nozzle group is driven by the sixth motor to slide back and forth along the second head connection crossbar. The first nozzle group is on the first The distance of the last slide of the connecting bar of the machine head is equal to the distance of the second slide of the second nozzle group on the connecting bar of the second machine head, which is equal to the printing width of the fabric. Print flat.

When in use, at first the fabric to be printed is laid flat on the printing plate, and when the fabric is printed with the first nozzle group 14, the second left machine head is driven by the fourth motor to connect the liftable bar of the vertical bar 21 and the second 2. The liftable rod connected to the vertical rod 23 of the right machine head rises to the highest, and the fourth motor stops working. At this time, the third roller 22 and the fourth roller 24 are not in contact with the left inner lower connecting rod 8 and the right inner lower connecting rod 12 respectively. , the third motor and the sixth motor are all in the stop working state, and the second motor drives the first left machine head connecting vertical bar 15 and the first right machine head connecting vertical bar 17 to go down to the lowest , the second motor stops working. At this time, the first roller 16 and the second roller 18 are respectively in contact with the slideways of the left outer lower connecting rod 7 and the right outer lower connecting rod 11. At this time, the first nozzle group 14 and the second nozzle group The group 20 keeps a distance in the vertical direction, and then first the fifth motor drives the first nozzle group 14 to slide back and forth along the first head connecting cross bar 13, and then the first motor drives the first roller 16 along the left outer lower connecting rod 7 The slideway moves forward for a printing stroke, and at the same time drives the second roller 18 to move forward for a printing stroke along the slideway of the right outer lower connecting rod 11, thereby driving the first nozzle group 14 to move forward for a printing stroke , and continue until the first nozzle group 14 completes its own printing task; when selecting to use the second nozzle group 20 to print the fabric, the first left machine head is connected to the vertical rod 15 by the second motor. The liftable bar that the machine head connects the vertical bar 17 rises to the highest, the second motor stops working, and now the first roller 16 and the second roller 18 are not in contact with the left outer lower connecting rod 7 and the right outer lower connecting rod 11 respectively. One motor and the 5th motor are all in stop working condition, drive the second left machine head to connect the vertical bar 21 liftable bar and the second right machine head to connect the vertical bar 23 liftable bar to drop to the minimum by the 4th motor simultaneously, the first The four motors stopped working. At this time, the third roller 22 and the fourth roller 24 were in contact with the slideways of the left inner lower connecting rod 8 and the right inner lower connecting rod 12 respectively. At this moment, the first nozzle group 14 and the second nozzle group 20 Keep the distance in the vertical direction, then firstly the sixth motor drives the second nozzle group 20 to slide back and forth along the second head connecting cross bar 19, and then the third motor drives the third roller 22 along the slideway of the left inner lower connecting rod 8 Move forward a printing stroke, and at the same time drive the fourth roller 24 to move forward a printing stroke along the slideway of the right inner lower connecting rod 12, thereby driving the second nozzle group 20 to move forward a printing stroke, continuously Until the second nozzle group 20 completes its own printing task.

Claims (2)

1. A digital inkjet printing machine with two nozzle groups alternately printing, comprising a support system, characterized in that: the support system includes a left front support frame, a right front support frame, a left rear support frame and a right rear support frame, and in the left front The tops of the support frame and the left rear support frame are fixedly connected with a left outer upper connecting rod and a left inner upper connecting rod. The middle and upper part of the frame is fixedly connected with a left outer lower connecting rod and a left inner lower connecting rod. The left outer lower connecting rod is located on the left side of the left inner lower connecting rod, Have a slideway, the left outer upper connecting rod and the left outer lower connecting rod keep vertical, the left inner upper connecting rod and the left inner lower connecting rod keep vertical, and the right front support frame and the right rear support frame The top of the top is fixedly connected with a right outer upper connecting rod and a right inner upper connecting rod, and the right outer upper connecting rod is located on the right side of the right inner upper connecting rod, and is fixedly connected with a The right outer lower connecting rod and the right inner lower connecting rod, the right outer lower connecting rod is located on the right side of the right inner lower connecting rod, the left outer lower connecting rod, the right outer lower connecting rod, the left inner lower connecting rod, the right A slideway is provided on the inner lower connecting rod, the upper connecting rod on the right outer side and the lower connecting rod on the right outer side are kept vertical, the upper connecting rod on the right inner side and the lower connecting rod on the right inner side are kept vertical, and the upper connecting rod on the left outer side is connected Bar, right outer upper connecting rod are on the same horizontal line, described left inner upper connecting rod, right inner upper connecting rod are on the same horizontal line, described left outer lower connecting rod, left inner lower connecting rod, right outer lower connecting rod and The right inner lower connecting rod is on the same horizontal line, the distance between the left inner upper connecting rod, the right inner upper connecting rod and the left inner lower connecting rod, the right inner lower connecting rod is less than the left outer upper connecting rod, the right outer upper connecting rod and the The distance between the left outer lower connecting rod and the right outer lower connecting rod, the first machine head assembly is connected to the left outer upper connecting rod and the right outer upper connecting rod, and the first machine head assembly includes the first left machine head Connect the vertical bar and the first right machine head connecting vertical bar, the top of the first left machine head connecting vertical bar is embedded and connected on the left outer upper connecting bar, and the first left machine head connecting vertical bar can be connected along the left outer The upper connecting rod slides back and forth, and a first roller is installed at the bottom of the first left machine head, and a first motor is installed inside the first roller, and the first roller is driven to rotate by the first motor. The top end of the first right machine head connecting vertical bar is embedded and connected on the right outer upper connecting rod, and the first right machine head connecting vertical bar can slide back and forth along the right outer upper connecting rod. The bottom is equipped with a second roller, and a first nose connection cross bar is fixedly connected between the first left machine head connection vertical bar and the first right machine head connection vertical bar, and the first machine head connection cross bar The left end is fixed on the lower part of the first left machine head connecting vertical bar, and the first left machine head connecting vertical bar above the connection point between the first machine head connecting cross bar and the first left machine head connecting vertical bar is liftable Rod, the liftable rod part of the first left machine head connecting vertical bar is driven by the second motor to lift, and the right end of the first machine head connecting horizontal bar is fixed on the lower part of the first right machine head connecting vertical bar, located at Above the connection point between the first nose connecting horizontal bar and the first right nose connecting vertical bar The first right machine head connecting vertical rod is a liftable rod, and the lifting rod part of the first right machine head connecting vertical rod is driven by the second motor to lift, and the left inner upper connecting rod and the right inner upper connecting rod A second machine head assembly is connected to the top, and the second machine head assembly includes a second left machine head connecting vertical bar and a second right machine head connecting vertical bar, and the top end of the second left machine head connecting vertical bar is embedded and connected to the On the left inner upper connecting rod, the second left machine head connecting vertical bar can slide back and forth along the left inner upper connecting rod, and a third roller is installed on the bottom of the second left machine head, and the third roller A third motor is installed inside, and the third roller is driven to rotate by the third motor. The top end of the second right machine head connecting vertical bar is embedded and connected to the right inner upper connecting rod, and the second right machine head is connected to The vertical bar can slide back and forth along the right inner upper connecting rod, and a fourth roller is installed at the bottom of the second right machine head, and the vertical bar is connected to the second left machine head and the second right machine head. A second machine head connecting cross bar is fixedly connected between them, and the left end of the second machine head connecting cross bar is fixed on the lower part of the second left machine head connecting vertical bar, and is located between the second machine head connecting cross bar and the second machine head connecting cross bar. The second left machine head connection vertical bar above the connection point of the left machine head connection vertical bar is a liftable bar, and the liftable bar part of the second left machine head connection vertical bar is driven by the fourth motor. The right end of the connecting cross bar of the machine head is fixed on the lower part of the second right machine head connecting vertical bar. The rod is a liftable rod, and the liftable rod part of the second right machine head connected to the vertical rod is driven up and down by the fourth motor. The first nozzle group is connected to the first machine head connected to the horizontal bar. The nozzle group is driven by the fifth motor to slide back and forth along the first head connecting bar, and the second nozzle group is connected to the second head connecting bar, and the second nozzle group is driven by the sixth motor along the The second nozzle connecting bar slides back and forth, and the distance that the first nozzle group slides once on the first nozzle connecting rail is equal to the distance that the second nozzle group slides once on the second nozzle connecting rail, which is equal to The printing width of the fabric is equipped with a printing plate at the bottom of the first nozzle group and the second nozzle group. 2. A digital inkjet printing method based on a double nozzle group alternate printing digital inkjet printing machine according to claim 1, characterized in that: first, the fabric to be printed is tiled on the printing plate When choosing to use the first nozzle group to print the fabric, the fourth motor drives the liftable bar of the second left machine head connected to the vertical bar and the liftable bar of the second right machine head connected to the vertical bar to rise to the highest level. The four motors stop working. At this time, the third roller and the fourth roller are not in contact with the left inner lower connecting rod and the right inner lower connecting rod respectively. A left machine head connects the liftable bar of the vertical bar and the first right machine head connects the liftable bar of the vertical bar to drop to the minimum, and the second motor stops working. , The slideway of the right outer lower connecting rod is in contact with each other. At this time, the first nozzle group and the second nozzle group maintain a vertical distance, and then the fifth motor drives the first nozzle group to slide back and forth along the first head connecting cross bar. , and then the first motor drives the first roller to move forward a printing stroke along the slideway of the left outer lower connecting rod, and at the same time drives the second roller to move forward a printing stroke along the slideway of the right outer lower connecting rod , so as to drive the first nozzle group to move forward for a printing stroke, and continue until the first nozzle group completes its own printing task; when choosing to use the second nozzle group to print fabrics, drive the first left machine head through the second motor The liftable bar connected to the vertical bar and the liftable bar connected to the vertical bar of the first right machine head rise to the highest, and the second motor stops working. The connecting rods are not in contact, the first motor and the fifth motor are in the stop working state, and at the same time, the fourth motor drives the liftable rod connected to the vertical rod of the second left machine head and the liftable rod connected to the vertical rod of the second right machine head to descend At the bottom, the fourth motor stops working. At this time, the third roller and the fourth roller are in contact with the slideways of the left inner lower connecting rod and the right inner lower connecting rod respectively. At this time, the vertical direction of the first nozzle group and the second nozzle group Keep the distance, then firstly the sixth motor drives the second nozzle group to slide back and forth along the connecting bar of the second machine head, and then the third motor drives the third roller to move forward along the slideway of the left inner lower connecting bar for a printing motion At the same time, it drives the fourth roller to move forward for one printing stroke along the slideway of the right inner lower connecting rod, thereby driving the second nozzle group to move forward for one printing stroke, and continues until the second nozzle group completes its own printing Task.