Ultrasonic printing machine and printing method

Abstract

The invention discloses an ultrasonic printing machine and a printing method, and relates to the field of printing machines, the ultrasonic printing machine comprises an upper printing mechanism, a transfer roller and an ultrasonic printing mechanism which are sequentially arranged from top to bottom, and the upper printing mechanism comprises an upper printing roller and a scraper; the transfer roller is parallel to the printing roller; the ultrasonic printing mechanism comprises a lower printing roller and an ultrasonic printing assembly, the lower printing roller is parallel to the transfer roller, and cloth is printed by the upper printing roller and then conveyed to the position between the lower printing roller and the ultrasonic printing assembly through the transfer roller; the multiple ultrasonic printing assemblies are evenly distributed below the lower printing roller in the length direction of the lower printing roller, the ultrasonic printing assemblies are obliquely arranged and face the axis direction of the lower printing roller all the time, and the inclination directions of every two adjacent ultrasonic printing assemblies are opposite. Pigment printing and ultrasonic printing can be carried out at the same time, and large-format cloth ultrasonic printing can be achieved through the ultrasonic printing assemblies which are arranged in the length direction of the lower printing roller and face the axis direction of the lower printing roller.

Description

Technical Field

[0001] The invention belongs to the field of printing machines, in particular to an ultrasonic printing machine and a printing method. Background Art

[0002] Ultrasonic printing machine is a kind of equipment that uses ultrasonic technology to realize pattern pressing and pattern processing. The principle of ultrasonic printing is to convert electrical energy into mechanical vibration energy through ultrasonic vibration source, and transmit it to the surface of fabric through printing mold, so as to realize the printing of pattern. Ultrasonic printing machine is widely used in pattern pressing and pattern processing in textile, plastic, leather, ceramic and other industries due to its high frequency, small amplitude and high efficiency. The traditional ultrasonic printing machine is point-to-surface drawing, and if the fabric needs dye printing and ultrasonic printing at the same time, it needs to carry out two processes respectively, which has low work efficiency, and it is difficult to process or difficult to process the large-scale fabric. If it is integrated into the traditional printing machine, due to the large width of the fabric, if a single ultrasonic vibration source and a single printing mold are used, the required ultrasonic vibration source power and the printing mold scale will increase exponentially. And because of its large size, it is easy to cause mechanical vibration energy loss when the device is working, resulting in a decrease in printing quality and other problems, which need to be improved. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an ultrasonic printing machine and a printing method.

[0004] The present invention adopts the following technical solution: An ultrasonic printing machine comprises an upper printing mechanism, a transfer roller and an ultrasonic printing mechanism which are arranged in sequence from top to bottom, the upper printing mechanism comprises an upper printing roller and a scraper, an ink groove is formed between the upper printing roller and the scraper; the transfer roller is arranged parallel to the printing roller; the ultrasonic printing mechanism comprises a lower printing roller and an ultrasonic printing assembly, the lower printing roller is arranged parallel to the transfer roller, and the cloth is transported to between the lower printing roller and the ultrasonic printing assembly through the transfer roller after being printed by the upper printing roller; a plurality of ultrasonic printing assemblies are arranged, which are evenly distributed below the lower printing roller along the length direction of the lower printing roller, the ultrasonic printing assemblies are arranged obliquely and always face the axis direction of the lower printing roller, and the inclination directions of two adjacent ultrasonic printing assemblies are opposite.

[0005] Preferably, the ultrasonic printing assembly includes a telescopic cylinder, an ultrasonic generator and a printing mold. The telescopic cylinder is arranged below the lower printing roller, and the movable direction of its piston rod is inclined and always toward the axis of the lower printing roller, and the inclination directions of two adjacent telescopic cylinders are opposite; the ultrasonic generator is arranged at the end of the telescopic cylinder; the printing mold is connected to the ultrasonic generator, and can move with the telescopic cylinder in the direction approaching or away from the lower printing roller and print the cloth attached to the lower printing roller, and the two adjacent printing molds are arranged continuously and without intervals in the length direction of the lower printing roller to form a continuous printing pattern on the cloth.

[0006] Preferably, it also includes a control system, which includes a rotary encoder and a controller. The rotary encoder is connected to the lower printing roller to monitor the transport speed of the lower printing roller; the controller is connected to the telescopic cylinder to control the telescopic cylinder to alternately extend and retract according to the signal fed back by the rotary encoder to form a continuous and complete printing pattern.

[0007] Preferably, the printing mold comprises a base fixedly mounted on the ultrasonic generator and a printing mounting block detachably mounted on the base and capable of performing pattern printing on fabric, and a printing pattern is formed on the top surface of the printing mounting block.

[0008] Preferably, it also includes a multi-axis gearbox connected to the transfer roller, the other end of the multi-axis gearbox is connected to the motor, and a plurality of output shafts are arranged on the motor, and the transfer roller can be connected to different output shafts respectively to rotate at different speeds.

[0009] Preferably, the upper printing mechanism further comprises a lifting cylinder connected to the upper printing roller, and the lifting cylinder can drive the upper printing roller to move in a direction away from or close to the transfer roller.

[0010] Preferably, the transfer roller is a rubber roller with a certain elasticity.

[0011] It can be seen from the above description of the present invention that, compared with the prior art, the present invention has the following beneficial effects: the present invention can simultaneously perform pigment printing and ultrasonic printing, and can realize ultrasonic printing of large-width fabrics by arranging a plurality of ultrasonic printing components arranged along the length direction of the lower printing roller and arranged toward the axis direction of the lower printing roller, and the inclination directions of two adjacent ultrasonic printing components are opposite, so that there is a certain misalignment between the two adjacent ultrasonic printing components, which can avoid mutual interference between the two adjacent ultrasonic printing components during printing, improve the printing quality, and have high practicality; The printing molds are arranged continuously and without intervals in the length direction of the lower printing roller, so that the printed pattern remains continuous in the width direction of the fabric, which can be used to print more complex patterns and further improve the printing effect; The controller controls the adjacent cylinders to extend and retract alternately at a certain frequency according to the rotation speed of the lower printing roller detected by the rotary encoder, thereby further avoiding interference between adjacent ultrasonic printing components and keeping the printed pattern continuous in the length direction of the fabric to form a continuous pattern in the length direction of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 for Figure 1 A partial enlarged view of the middle A; Figure 3 The structure of the present invention is schematically shown Figure 2 ; Figure 4 It is a front view of the present invention; Figure 5 is a cross-sectional view of the present invention; Figure 6 This is a schematic diagram of the cloth printing conveying of the present invention; In the figure: 1-upper printing mechanism; 11-upper printing roller; 12-scraper; 13-lifting cylinder; 14-ink tank; 2-transfer roller; 21-multi-axis gearbox; 22-output shaft; 3-ultrasonic printing mechanism; 31-lower printing roller; 32-ultrasonic printing assembly; 321-telescopic cylinder; 322-ultrasonic generator; 323-printing mold; 3231-base; 3232-printing mounting block; 4-rotary encoder. DETAILED DESCRIPTION

[0013] The present invention is further described below through specific implementation modes.

[0014] Reference Figures 1 to 6 As shown, an ultrasonic printing machine and a printing method include an upper printing mechanism 1, a transfer roller 2, an ultrasonic printing mechanism 3, and a control system.

[0015] The upper printing mechanism 1 , the transfer roller 2 , and the ultrasonic printing mechanism 3 are arranged in sequence from top to bottom. The cloth passes between the upper printing mechanism 1 and the transfer roller 2 , and passes through the ultrasonic printing mechanism 3 after going back under the transfer roller 2 .

[0016] The upper printing mechanism 1 includes an upper printing roller 11, a scraper 12 and a lifting cylinder 13. The scraper 12 is pressed against the upper printing roller 11 at a certain angle. An ink groove 14 for accommodating pigment is formed between the upper printing roller 11 and the scraper 12. When the upper printing roller 11 rotates, the pigment is printed on the cloth; the lifting cylinder 13 is connected to the upper printing roller 11, and can drive the upper printing roller 11 to move in a direction away from or close to the transfer roller 2.

[0017] The transfer roller 2 is arranged parallel to the printing roller. The transfer roller 2 is a rubber roller with a certain elasticity and is used to transport the cloth in a changing direction. A multi-axis gearbox 21 connected to the transfer roller 2 is also included. The other end of the multi-axis gearbox 21 is connected to the motor, and multiple output shafts 22 are arranged on it. The transfer roller 2 can be connected to different output shafts 22 to rotate at different speeds.

[0018] The ultrasonic printing mechanism 3 includes a lower printing roller 31 and an ultrasonic printing assembly 32. The lower printing roller 31 is arranged parallel to the transfer roller 2. After the cloth is printed by the upper printing roller 11, it is transported to between the lower printing roller 31 and the ultrasonic printing assembly 32 through the transfer roller 2. There are several ultrasonic printing assemblies 32, which are evenly distributed below the lower printing roller 31 along the length direction of the lower printing roller 31. The ultrasonic printing assemblies 32 are arranged obliquely and always face the axis direction of the lower printing roller 31. The inclination directions of two adjacent ultrasonic printing assemblies 32 are opposite. By arranging several ultrasonic printing assemblies 32 along the length direction of the lower printing roller 31 and facing the axis direction of the lower printing roller 31, ultrasonic printing of large-width cloth can be achieved, and the inclination directions of two adjacent ultrasonic printing assemblies 32 are opposite, resulting in a certain angle of misalignment between the two, which can avoid mutual interference between the two adjacent ultrasonic printing assemblies 32 during printing, improve the printing quality, and have high practicality.

[0019] Specifically, the ultrasonic printing assembly 32 includes a telescopic cylinder 321, an ultrasonic generator 322 and a printing mold 323. The telescopic cylinder 321 is arranged below the lower printing roller 31, and the movable direction of its piston rod is inclined and always faces the axis of the lower printing roller 31. The inclination directions of the two adjacent telescopic cylinders 321 are opposite; the ultrasonic generator 322 is arranged at the end of the telescopic cylinder 321; the printing mold 323 is connected to the ultrasonic generator 322, and can move along the direction of approaching or moving away from the lower printing roller 31 with the telescopic cylinder 321 and print the cloth attached to the lower printing roller 31. The two adjacent printing molds 323 are arranged continuously and without intervals in the length direction of the lower printing roller 31 to form a continuous printing pattern on the cloth. The printing mold 323 is arranged continuously and without intervals in the length direction of the lower printing roller 31, so that the printed pattern remains continuous in the width direction of the cloth, and can be used to print more complex patterns, further improving the printing effect.

[0020] Furthermore, the printing mold 323 includes a base 3231 fixedly mounted on the ultrasonic generator 322 and a printing mounting block 3232 detachably mounted on the base 3231 for printing patterns on fabrics, and a printing pattern is formed on the top surface of the printing mounting block 3232. It is convenient to change the printing pattern without removing the device.

[0021] The control system includes a rotary encoder 4 and a controller. The rotary encoder 4 is connected to the lower printing roller 31 to monitor the transport speed of the lower printing roller 31. The controller is connected to the telescopic cylinder 321 to control the telescopic cylinder 321 to alternately telescope according to the signal fed back by the rotary encoder 4 to form a continuous and complete printing pattern. The controller controls the adjacent cylinders to staggeredly telescope at a certain frequency according to the rotation speed of the lower printing roller 31 detected by the rotary encoder 4, thereby further avoiding interference between adjacent ultrasonic printing components 32 and keeping the printed pattern continuous in the length direction of the fabric to form a continuous pattern in the length direction of the fabric.

[0022] During printing, the cloth first passes under the upper printing mechanism 1, and then is subjected to pigment printing by the upper printing mechanism 1. The cloth is driven by the transfer roller 2 to be transported to the ultrasonic printing mechanism 3. The lower printing roller 31 drives the cloth to be transported under the friction transmission of the transfer roller 2. At this time, the controller controls the telescopic cylinder 321 to staggeredly telescope at a suitable frequency according to the signal fed back by the rotary encoder 4, so as to form a continuous and complete printing pattern in the width and length directions on the cloth. The present application can simultaneously perform pigment printing and ultrasonic printing. By arranging a plurality of ultrasonic printing components 32 arranged along the length direction of the lower printing roller 31 and facing the axis direction of the lower printing roller 31, ultrasonic printing of large-width cloth can be achieved, and the printing pattern is continuous and complete, which greatly improves the quality of the finished product and has high practicality.

[0023] An ultrasonic printing method, the steps are as follows: (1) Before printing, guide the fabric to pass under the upper printing mechanism, go around the transfer roller, and then pass through the ultrasonic printing mechanism. After adding pigment to the ink tank, start the device to control the rotation of the upper printing roller and the transfer roller. (2) Pigment printing: the pigment is coated on the surface of the upper printing roller by a scraper, and the fabric obtains the first printing pattern after passing through the upper printing roller; (3) Ultrasonic printing: The rotating roller drives the fabric to continue moving, and the friction drives the lower printing roller to rotate. When the fabric passes through the lower printing roller and the ultrasonic printing component, the controller controls the telescopic cylinder to extend at the corresponding frequency according to the signal fed back by the rotary encoder. The ultrasonic generator transmits the ultrasonic wave to the printing mold, and the printing mold continuously prints ultrasonic patterns on the fabric at the corresponding frequency.

[0024] Specifically, the telescopic frequency of the telescopic cylinder in step (3) (the interval between two full extensions of the telescopic cylinder) is in: It is the interval time between two full extensions of the telescopic cylinder; is the width of the printing abrasive; is the angular velocity of the lower printing roller detected by the rotary encoder; r is the radius of the lower printing roller.

[0025] Preferably, the interval time between two full extensions of two adjacent telescopic cylinders is T, but when one telescopic cylinder is fully extended, the other telescopic cylinder is in a fully retracted state.

[0026] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. An ultrasonic printing machine, characterized in that: It includes an upper printing mechanism, a transfer roller and an ultrasonic printing mechanism which are arranged in sequence from top to bottom. The upper printing mechanism includes an upper printing roller and a scraper, and an ink groove is formed between the upper printing roller and the scraper; the transfer roller is arranged parallel to the printing roller; the ultrasonic printing mechanism includes a lower printing roller and an ultrasonic printing component, and the lower printing roller is arranged parallel to the transfer roller. After the cloth is printed by the upper printing roller, it is transported to between the lower printing roller and the ultrasonic printing component through the transfer roller; there are a number of ultrasonic printing components, which are evenly distributed below the lower printing roller along the length direction of the lower printing roller, the ultrasonic printing components are arranged obliquely and always face the axis direction of the lower printing roller, and the inclination directions of two adjacent ultrasonic printing components are opposite.

2. The ultrasonic printing machine according to claim 1, characterized in that: The ultrasonic printing component includes a telescopic cylinder, an ultrasonic generator and a printing mold. The telescopic cylinder is arranged below the lower printing roller, and the movable direction of the piston rod of the telescopic cylinder is inclined and always faces the axis of the lower printing roller. The inclination directions of two adjacent telescopic cylinders are opposite; the ultrasonic generator is arranged at the end of the telescopic cylinder; the printing mold is connected to the ultrasonic generator, and can move along with the telescopic cylinder in the direction close to or away from the lower printing roller to print the cloth attached to the lower printing roller. The two adjacent printing molds are arranged continuously and without intervals in the length direction of the lower printing roller to form a continuous printing pattern on the cloth.

3. An ultrasonic printing machine according to claim 2, characterized in that: It also includes a control system, which includes a rotary encoder and a controller. The rotary encoder is connected to the lower printing roller to monitor the transport speed of the lower printing roller; the controller is connected to the telescopic cylinder to control the telescopic cylinder to alternately extend and retract according to the signal fed back by the rotary encoder to form a continuous and complete printing pattern.

4. The ultrasonic printing machine according to claim 1, characterized in that: The printing mold comprises a base fixedly arranged on the ultrasonic generator and a printing installation block detachably arranged on the base for printing patterns on cloth, and a printing pattern is formed on the top surface of the printing installation block.

5. The ultrasonic printing machine according to claim 1, characterized in that: It also includes a multi-axis gearbox connected to the transfer roller, the other end of the multi-axis gearbox is connected to the motor, and a plurality of output shafts are arranged on the motor. The transfer roller can be connected to different output shafts respectively to rotate at different speeds.

6. The ultrasonic printing machine according to claim 1, characterized in that: The upper printing mechanism also includes a lifting cylinder connected to the upper printing roller, and the lifting cylinder can drive the upper printing roller to move in a direction away from or close to the transfer roller.

7. The ultrasonic printing machine according to claim 1, characterized in that: The transfer roller is a rubber roller with certain elasticity.

8. An ultrasonic printing method, characterized in that: The ultrasonic printing machine according to claim 3 comprises the following steps: Before printing, the fabric is guided to pass under the upper printing mechanism, and then passed through the ultrasonic printing mechanism after being returned by the transfer roller. After adding pigment to the ink tank, the device is started to control the rotation of the upper printing roller and the transfer roller. Pigment printing, the pigment is coated on the surface of the upper printing roller by a scraper, and the cloth obtains the first printing pattern after passing through the upper printing roller; In ultrasonic printing, the rotating roller drives the fabric to continue moving, and friction drives the lower printing roller to rotate. When the fabric passes through the lower printing roller and the ultrasonic printing assembly, the controller controls the telescopic cylinder to extend at the corresponding frequency according to the signal fed back by the rotary encoder, and the ultrasonic generator transmits the ultrasonic wave to the printing mold, which then prints continuous ultrasonic printing patterns on the fabric at the corresponding frequency.

9. An ultrasonic printing method according to claim 8, characterized in that: The extension frequency of the telescopic cylinder in step (3) (the interval between two full extensions of the telescopic cylinder) is in: It is the interval time between two full extensions of the telescopic cylinder; is the width of the printing abrasive; is the angular velocity of the lower printing roller detected by the rotary encoder; r is the radius of the lower printing roller.

10. An ultrasonic printing method according to claim 9, characterized in that: The interval time between two extensions of two adjacent telescopic cylinders is T, but when one telescopic cylinder is fully extended, the other telescopic cylinder is in a fully retracted state.

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