阅读说明：本技术 一种纺织印染布料预处理设备 (Pretreatment equipment for textile printing and dyeing cloth ) 是由 王明辉 于 2021-09-27 设计创作，主要内容包括：本发明涉及纺织设备技术领域,尤其涉及一种纺织印染布料预处理设备,包括机架、进料组件、传送组件、喷涂组件、烘干组件和出料组件；进料组件设置在机架的进料端；传送组件设置在机架上；喷涂组件设置在机架上；由传送组件传送的物料设置在喷涂组件之间；烘干组件设置在机架上,且位于喷涂组件的出料端；出料组件设置在机架的出料端。本发明通过设置传送组件,使物料在机架内滑动,物料依次经过喷涂组件和烘干组件,以便完成相应的预处理,经过预处理的物料对染料的着色性能增高,有较强的分散和防返沾能力,可以有效减少纺织加工后处理的步骤和时间,提高了流水线的生产效率,减少次品的产生。(The invention relates to the technical field of textile equipment, in particular to textile printing and dyeing cloth pretreatment equipment which comprises a rack, a feeding assembly, a conveying assembly, a spraying assembly, a drying assembly and a discharging assembly, wherein the feeding assembly is arranged on the rack; the feeding assembly is arranged at the feeding end of the frame; the conveying assembly is arranged on the rack; the spraying component is arranged on the frame; the materials conveyed by the conveying assembly are arranged between the spraying assemblies; the drying component is arranged on the rack and is positioned at the discharge end of the spraying component; the discharging component is arranged at the discharging end of the frame. According to the invention, the conveying assembly is arranged, so that the material slides in the rack, and the material sequentially passes through the spraying assembly and the drying assembly so as to complete corresponding pretreatment, so that the coloring performance of the pretreated material on the dye is improved, the dye has strong dispersing and anti-adhesive-back capabilities, the steps and time of textile processing post-treatment can be effectively reduced, the production efficiency of a production line is improved, and the generation of defective products is reduced.)

1. A pretreatment device for textile printing and dyeing cloth is characterized by comprising a rack (1), a feeding assembly (2), a conveying assembly (3), a spraying assembly (4), a drying assembly (5) and a discharging assembly (6); the feeding assembly (2) is arranged at the feeding end of the rack (1); the conveying assembly (3) is arranged on the rack (1); the spraying component (4) is arranged on the frame (1); the materials (7) conveyed by the conveying assembly (3) are arranged between the spraying assemblies (4); the drying component (5) is arranged on the rack (1) and is positioned at the discharge end of the spraying component (4); the discharging component (6) is arranged at the discharging end of the rack (1);

the conveying assembly (3) comprises an X-axis direction driving piece (10), a Y-axis direction driving piece (11), a Z-axis direction driving piece (12) and a transmission piece (13); the X-axis direction driving piece (10) is arranged on the rack (1); a Y-axis direction driving piece (11) driven by the X-axis direction driving piece (10) is arranged on the rack (1) in a sliding manner; the Z-axis direction driving piece (12) is arranged on the Y-axis direction driving piece (11); the transmission piece (13) is arranged on the driving piece (12) in the Z-axis direction, and the transmission piece (13) is respectively positioned above the material (7) and below the material (7); the material (7) clamped and conveyed by the transmission piece (13) is arranged on the rack (1) in a sliding manner.

2. The textile printing and dyeing cloth pretreatment apparatus according to claim 1, characterized in that the feed assembly (2) comprises a feed frame (8) and a feed roller (9); the feeding frame (8) is arranged at the feeding end of the frame (1); the feeding roller (9) is rotatably arranged on the feeding frame (8).

3. The pretreatment apparatus for textile printing and dyeing cloth according to claim 1, characterized in that the X-axis direction driving member (10) comprises a cylinder one (14), a carriage (15) and a guide bar (16); the sliding frames (15) are arranged on the rack (1) and are positioned at two sides of the material (7); a Y-axis direction driving piece (11) driven by a first air cylinder (14) is arranged on the sliding frame (15) in a sliding mode; the guide rod (16) is arranged on the sliding frame (15) and is connected with the driving piece (11) in the Y-axis direction in a sliding mode.

4. The pretreatment apparatus for textile printing and dyeing cloth according to claim 1, characterized in that the Y-axis direction driving member (11) comprises a linear module (17) and a sliding seat (22); the linear module (17) is arranged on the driving piece (10) in the X-axis direction and is connected with the rack (1) in a sliding way; the sliding seat (22) is arranged on the linear module (17) in a sliding manner; the Z-axis direction driving member (12) is provided on the slide base (22).

5. The pretreatment apparatus for textile printing and dyeing cloth according to claim 1, characterized in that the Z-axis direction driving member (12) is provided as a second cylinder; the cylinder body end of the second cylinder is arranged on the driving piece (11) in the Y-axis direction; the transmission piece (13) is arranged at the piston end of the second cylinder.

6. The textile printing and dyeing cloth pretreatment apparatus according to claim 1, characterized in that the transmission member (13) comprises a rotating frame (18), a driving motor (19), a rotating shaft (20) and a rotating roller (21); the rotating frame (18) is arranged on the driving piece (12) in the Z-axis direction; a rotating shaft (20) driven by a driving motor (19) is rotationally arranged on the rotating frame (18); the rotating roller (21) is arranged on the rotating shaft (20); the material (7) is arranged on the rotating roller (21).

7. The pretreatment apparatus for textile printing and dyeing cloth according to claim 1, characterized in that the spray assembly (4) comprises a treatment liquid tank (23), a liquid inlet pipe (24), a spray member (25) and a water filter tank (26); the treatment liquid tank (23) is arranged on the frame (1); the liquid inlet end of the liquid inlet pipe (24) is arranged at the liquid outlet end of the treatment liquid tank (23), and the liquid outlet end of the liquid inlet pipe (24) is arranged at the liquid inlet end of the spraying piece (25); the spraying pieces (25) are arranged in multiple groups, and the multiple groups of spraying pieces (25) are respectively arranged above the material (7) and below the material (7); the water filtering tank (26) is arranged on the frame (1) and is positioned below the material (7).

8. The pretreatment apparatus for textile printing and dyeing cloth according to claim 1, characterized in that the drying assembly (5) comprises a dryer (27), a heat-insulating cover (28), an exhaust fan (29), an exhaust duct (30) and a purifier (31); the heat preservation cover (28) is arranged on the frame (1); the dryer (27) is arranged on the rack (1), and the dryer (27) is positioned in the heat-insulating cover (28); the exhaust fan (29) is arranged on the heat preservation cover (28); the exhaust pipe (30) is arranged at the air outlet of the exhaust device (29); the purifier (31) is arranged at the air outlet of the exhaust pipe (30).

9. The textile printing and dyeing cloth pretreatment apparatus according to claim 1, characterized in that the discharging assembly (6) comprises a discharging rack (32) and a discharging roller (33); the discharging frame (32) is arranged at the discharging end of the frame (1); the discharging roller (33) is rotatably arranged on the discharging frame (32).

10. A textile printing and dyeing cloth pretreatment apparatus according to any one of claims 1 to 9, characterized in that it is used as follows:

s1, enabling the material (7) to enter the rack (1) through the feeding assembly (2), and enabling the other end of the material (7) to be located on the discharging assembly (6), so that the material (7) slides in the rack (1);

s2, after the material (7) enters the rack (1), the Z-axis direction driving piece (12) controls the driving piece (13) to move in the Z-axis direction, the upper end and the lower end of the material (7) are clamped by the driving pieces (13) positioned on the upper side and the lower side of the rack (1), the X-axis direction driving piece (10) controls the Y-axis direction driving piece (11) to move in the X-axis direction, and the left end and the right end of the material (7) are leveled by the driving pieces (13) positioned on the left side and the right side of the rack (1); the transmission part (13) works and slides in the rack (1) under the drive of the driving part (11) in the Y-axis direction, so that the material (7) slides in the rack (1);

s3, the material (7) passes through the spraying component (4) under the transmission of the conveying component (3); the spraying piece (25) uniformly sprays the treatment liquid in the treatment liquid tank (23) to the upper surface and the lower surface of the material (7);

s4, the sprayed materials (7) reach the drying assembly (5), the drying machine (27) dries the materials (7), the exhaust fan (29) works in the drying process, and the processing liquid gas volatilized in the heat preservation cover (28) is exhausted out of the rack (1); the waste gas reaches a purifier (31) through an exhaust pipe (30), and the purifier (31) purifies the waste gas;

s5, the dried material (7) reaches the discharging assembly (6), pretreatment is completed, and next direct-injection printing is carried out.

Technical Field

The invention relates to the technical field of textile equipment, in particular to textile printing and dyeing cloth pretreatment equipment.

Background

The invention with the application number of CN202110191755.4 discloses an efficient and energy-saving auxiliary device for textile fabric pretreatment, which pushes a push disc and a roller sleeve to move upwards through the cooperation of an eccentric wheel, an arc-shaped rod, an arc-shaped base and a spring push rod, and cuts off the power of an electromagnetic push block to separate a clamping block from a clamping groove of the roller sleeve, so that the roller sleeve is convenient to disassemble, the continuous work of the device is convenient, and the efficiency of fabric pretreatment is further improved.

However, the above prior art has the following drawbacks: the equipment cannot spray printing direct-injection pretreatment liquid on cloth to be printed; the direct-injection printing pretreatment liquid can effectively improve the coloring performance of cotton fabrics to dyes, has strong dispersing and anti-rewetting capabilities, and can effectively reduce the steps and time of post-treatment; but the existing equipment can not carry out uniform spraying of the treatment liquid on the finished cloth; in the spraying process, the cloth has low absorption efficiency on the treatment liquid, and wrinkles on the cloth can obstruct the absorption of the treatment liquid, resulting in waste of the treatment liquid.

Disclosure of Invention

The invention provides a pretreatment device for textile printing and dyeing cloth, aiming at the technical problems in the background technology.

The technical scheme of the invention is as follows: a pretreatment device for textile printing and dyeing cloth comprises a rack, a feeding assembly, a conveying assembly, a spraying assembly, a drying assembly and a discharging assembly; the feeding assembly is arranged at the feeding end of the frame; the conveying assembly is arranged on the rack; the spraying component is arranged on the frame; the materials conveyed by the conveying assembly are arranged between the spraying assemblies; the drying component is arranged on the rack and is positioned at the discharge end of the spraying component; the discharging component is arranged at the discharging end of the frame.

The conveying assembly comprises an X-axis direction driving piece, a Y-axis direction driving piece, a Z-axis direction driving piece and a transmission piece; the X-axis direction driving piece is arranged on the rack; the Y-axis direction driving piece driven by the X-axis direction driving piece is arranged on the rack in a sliding manner; the Z-axis direction driving piece is arranged on the Y-axis direction driving piece; the transmission parts are arranged on the driving part in the Z-axis direction and are respectively positioned above the material and below the material; the materials clamped and conveyed by the transmission part are arranged on the rack in a sliding manner.

Preferably, the feeding assembly comprises a feeding frame and a feeding roller; the feeding frame is arranged at the feeding end of the frame; the feeding roller is rotatably arranged on the feeding frame.

Preferably, the X-axis direction driving piece comprises a first air cylinder, a sliding frame and a guide rod; the sliding frame is arranged on the rack and positioned on two sides of the material; a Y-axis direction driving piece driven by the first cylinder is arranged on the sliding frame in a sliding mode; the guide rod is arranged on the sliding frame and is in sliding connection with the driving piece in the Y-axis direction.

Preferably, the driving member in the Y-axis direction comprises a linear module and a sliding seat; the linear module is arranged on the driving piece in the X-axis direction and is connected with the rack in a sliding way; the sliding seat is arranged on the linear module in a sliding manner; the Z-axis driving piece is arranged on the sliding seat.

Preferably, the Z-axis direction driving piece is set to be a second air cylinder; the cylinder body end of the cylinder II is arranged on the driving piece in the Y-axis direction; the transmission part is arranged at the piston end of the cylinder II.

Preferably, the transmission part comprises a rotating frame, a driving motor, a rotating shaft and a rotating roller; the rotating frame is arranged on the driving piece in the Z-axis direction; a rotating shaft driven by a driving motor is rotationally arranged on the rotating frame; the rotating roller is arranged on the rotating shaft; the material is arranged on the rotating roller.

Preferably, the spraying assembly comprises a treatment liquid tank, a liquid inlet pipe, a spraying piece and a water filtering tank; the treatment liquid tank is arranged on the frame; the liquid inlet end of the liquid inlet pipe is arranged at the liquid outlet end of the treatment liquid tank, and the liquid outlet end of the liquid inlet pipe is arranged at the liquid inlet end of the spraying piece; the spraying parts are arranged in multiple groups, and the multiple groups of spraying parts are respectively arranged above the material and below the material; the water filter tank is arranged on the frame and is positioned below the material.

Preferably, the drying component comprises a dryer, a heat preservation cover, an exhaust fan, an exhaust pipe and a purifier; the heat insulation cover is arranged on the frame; the dryer is arranged on the rack and is positioned in the heat-insulating cover; the exhaust fan is arranged on the heat insulation cover; the exhaust pipe is arranged at the air outlet of the exhaust device; the purifier is arranged at the air outlet of the exhaust pipe.

Preferably, the discharging assembly comprises a discharging rack and a discharging roller; the discharging frame is arranged at the discharging end of the frame; the discharging roller is rotatably arranged on the discharging frame.

The invention provides a pretreatment device for textile printing and dyeing cloth, which comprises the following use methods:

and S1, enabling the material to enter the rack through the feeding assembly, and enabling the other end of the material to be located on the discharging assembly, so that the material slides in the rack.

S2, after the material enters the rack, the driving piece in the Z-axis direction controls the driving piece to move in the Z-axis direction, the upper end and the lower end of the material are clamped by the driving pieces located on the upper side and the lower side of the rack, the driving piece in the X-axis direction controls the driving piece in the Y-axis direction to move in the X-axis direction, and the left end and the right end of the material are leveled by the driving pieces located on the left side and the right side of the rack; the transmission part works and slides in the rack under the drive of the driving part in the Y-axis direction, so that the material slides in the rack.

S3, the material passes through the spraying component under the transmission of the conveying component; the spraying piece evenly sprays the treatment liquid in the treatment liquid tank to the upper surface and the lower surface of the material.

S4, after the spraying is finished, the material reaches a drying assembly, a dryer dries the material, an exhaust fan works in the drying process, and the processing liquid gas volatilized in the heat preservation cover is exhausted out of the rack; the exhaust gas reaches the purifier through the exhaust pipe, and the purifier purifies the exhaust gas.

S5, finishing pretreatment when the dried material reaches a discharging assembly, and performing direct injection printing.

Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects: through setting up the conveying subassembly, after the material got into the frame, Z axle direction driving piece control driving medium removed in the Z axle direction, and the upper and lower both ends of material are located the driving medium centre gripping of both sides about the frame, have realized the fixed of material, are convenient for carry out the preliminary treatment to the material.

X axle direction driving piece control Y axle direction driving piece removes in the X axle direction, and both ends are located the driving medium centre gripping of the frame left and right sides about the material, and the driving medium at both ends slides in the frame to make the material stretched in the frame and levelly and smoothly, thereby improve the material and to treatment fluid absorption efficiency among the spraying process, reduce the fold of material.

The driving medium work to slide in the frame under the drive of Y axle direction driving piece, make the material slide in the frame, make the material pass through spraying subassembly and stoving subassembly in proper order, so that accomplish corresponding preliminary treatment, the material through preliminary treatment increases to the tinctorial property of dyestuff, has stronger dispersion and prevents returning and be stained with the ability, can effectively reduce the step and the time of textile processing aftertreatment, has improved the production efficiency of assembly line, reduces the production of substandard product.

Drawings

FIG. 1 is a front cross-sectional view of one embodiment of the present invention.

FIG. 2 is a top view of one embodiment of the present invention.

FIG. 3 is a cross-sectional view of one embodiment of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 5 is a partially enlarged structural view at B in fig. 2.

Fig. 6 is a partially enlarged structural view at C in fig. 3.

Reference numerals: 1. a frame; 2. a feed assembly; 3. a transfer assembly; 4. a spray assembly; 5. a drying assembly; 6. a discharge assembly; 7. material preparation; 8. a feeding frame; 9. a feed roll; 10. an X-axis direction driving member; 11. a Y-axis direction driving member; 12. a Z-axis direction driving member; 13. a transmission member; 14. a first cylinder; 15. a carriage; 16. a guide bar; 17. a linear module; 18. a rotating frame; 19. a drive motor; 20. a rotating shaft; 21. a rotating roller; 22. a sliding seat; 23. a treatment liquid tank; 24. a liquid inlet pipe; 25. spraying a piece; 26. a water filtering tank; 27. a dryer; 28. a heat-preserving cover; 29. an air exhauster; 30. an exhaust duct; 31. a purifier; 32. a discharging frame; 33. and a discharging roller.

Detailed Description

Example one

As shown in fig. 1-6, the pretreatment device for textile printing and dyeing cloth provided by the invention comprises a frame 1, a feeding assembly 2, a conveying assembly 3, a spraying assembly 4, a drying assembly 5 and a discharging assembly 6; the feeding assembly 2 is arranged at the feeding end of the frame 1; the conveying assembly 3 is arranged on the frame 1; the spraying component 4 is arranged on the frame 1; the material 7 conveyed by the conveyor assembly 3 is arranged between the spray assemblies 4; the drying component 5 is arranged on the rack 1 and is positioned at the discharge end of the spraying component 4; the discharging component 6 is arranged at the discharging end of the frame 1.

The conveying assembly 3 comprises an X-axis direction driving piece 10, a Y-axis direction driving piece 11, a Z-axis direction driving piece 12 and a transmission piece 13; the X-axis direction driving piece 10 is arranged on the frame 1; a Y-axis direction driving piece 11 driven by the X-axis direction driving piece 10 is arranged on the frame 1 in a sliding way; the Z-axis direction driving piece 12 is arranged on the Y-axis direction driving piece 11; the transmission piece 13 is arranged on the driving piece 12 in the Z-axis direction, and the transmission piece 13 is respectively positioned above the material 7 and below the material 7; the material 7 held and conveyed by the driving member 13 is slidably disposed on the frame 1.

In this embodiment, the X-axis driving component 10 is used to control the position of the Y-axis driving component 11 on the rack 1, so as to drive the Z-axis driving component 12 to slide on the rack 1, thereby stretching the material 7; the driving piece 12 in the Z-axis direction drives the transmission piece 13 to clamp the material 7; the driving piece 11 in the Y-axis direction drives the driving piece 13 to slide on the frame 1, so that the material 7 slides in the frame 1.

Example two

As shown in fig. 1 to 6, the pre-treatment device for textile printing and dyeing cloth according to the present invention comprises a feeding assembly 2, which comprises a feeding frame 8 and a feeding roller 9; the feeding frame 8 is arranged at the feeding end of the frame 1; the feeding roller 9 is rotatably arranged on the feeding frame 8.

In this embodiment a feed carriage 8 is provided, the position of the feed rollers 9 being adjusted, the feed rollers 9 guiding the material 7 entering the frame 1.

EXAMPLE III

Referring to fig. 1 to 6, the apparatus for pretreating textile printing and dyeing cloth according to the present invention comprises a first cylinder 14, a carriage 15 and a guide bar 16, as compared to the first embodiment; the sliding frame 15 is arranged on the rack 1 and is positioned at two sides of the material 7; a Y-axis direction driving piece 11 driven by a first air cylinder 14 is arranged on the sliding frame 15 in a sliding mode; the guide bar 16 is provided on the carriage 15 and slidably connected to the Y-axis driver 11.

In this embodiment, the first air cylinder 14 drives the Y-axis driving member 11 to slide on the sliding frame 15, and the guiding rod 16 provides stable protection for the Y-axis driving member 11 sliding on the sliding frame 15.

Example four

As shown in fig. 1-6, the pretreatment apparatus for textile printing and dyeing cloth according to the present invention comprises a linear module 17 and a sliding seat 22 as the driving member 11 in the Y-axis direction; the linear module 17 is arranged on the driving piece 10 in the X-axis direction and is connected with the rack 1 in a sliding way; the sliding seat 22 is arranged on the linear module 17 in a sliding manner; the Z-axis driver 12 is provided on the slide base 22.

In the present embodiment, the sliding seat 22 slides on the linear module 17, so as to drive the X-axis driving member 10 to slide on the linear module 10.

EXAMPLE five

As shown in fig. 1 to 6, the pretreatment apparatus for textile printing and dyeing cloth according to the present invention is configured with a second cylinder as the driving member 12 in the Z-axis direction, compared to the first embodiment; the cylinder body end of the second air cylinder is arranged on the driving piece 11 in the Y-axis direction; the transmission piece 13 is arranged at the piston end of the second cylinder.

In this embodiment, the second cylinder is extended to make the transmission member 13 above the frame 1 and the transmission member 13 below the frame 1 approach each other, so as to clamp the material 7.

EXAMPLE six

As shown in fig. 1-6, the pre-treatment device for textile printing and dyeing cloth according to the present invention comprises, in comparison with the first embodiment, a transmission member 13 comprising a rotating frame 18, a driving motor 19, a rotating shaft 20 and a rotating roller 21; the rotating frame 18 is arranged on the Z-axis direction driving piece 12; a rotating shaft 20 driven by a driving motor 19 is rotatably provided on the rotating frame 18; the rotating roller 21 is provided on the rotating shaft 20; the material 7 is arranged on a rotating roller 21.

EXAMPLE seven

As shown in fig. 1-6, the pretreatment apparatus for textile printing and dyeing cloth according to the present invention comprises, in comparison with the first embodiment, a spraying assembly 4 including a treatment liquid tank 23, a liquid inlet pipe 24, a spraying member 25, and a water filtering tank 26; the treatment liquid tank 23 is arranged on the frame 1; the liquid inlet end of the liquid inlet pipe 24 is arranged at the liquid outlet end of the treatment liquid tank 23, and the liquid outlet end of the liquid inlet pipe 24 is arranged at the liquid inlet end of the spraying piece 25; the spraying parts 25 are arranged in multiple groups, and the multiple groups of spraying parts 25 are respectively arranged above the materials 7 and below the materials 7; the water filter tank 26 is arranged on the frame 1 and is positioned below the material 7.

In the present embodiment, the material 7 passes through the spraying assembly 4 under the drive of the conveying assembly 3; the spray member 25 uniformly sprays the treatment liquid in the treatment liquid tank 23 to the upper and lower surfaces of the material 7.

Example eight

As shown in fig. 1-6, the drying assembly 5 of the pretreatment apparatus for textile printing and dyeing cloth according to the present invention comprises a dryer 27, a heat insulation cover 28, an exhaust fan 29, an exhaust duct 30 and a purifier 31; the heat preservation cover 28 is arranged on the frame 1; the dryer 27 is arranged on the frame 1, and the dryer 27 is positioned in the heat-insulating cover 28; the exhaust fan 29 is arranged on the heat preservation cover 28; the exhaust duct 30 is arranged at the air outlet of the exhaust fan 29; the purifier 31 is disposed at an outlet of the exhaust duct 30.

In the embodiment, the material 7 after being sprayed reaches the drying component 5, the dryer 27 dries the material 7, the exhaust fan 29 works in the drying process, and the processing liquid gas volatilized in the heat-insulating cover 28 is exhausted out of the rack 1; the exhaust gas reaches the purifier 31 through the exhaust duct 30, and the purifier 31 purifies the exhaust gas.

Example nine

As shown in fig. 1-6, the pre-treatment device for textile printing and dyeing cloth according to the present invention comprises, with respect to the first embodiment, a discharging assembly 6 comprising a discharging frame 32 and a discharging roller 33; the discharging frame 32 is arranged at the discharging end of the frame 1; the discharging roller 33 is rotatably provided on the discharging frame 32.

The invention provides a pretreatment device for textile printing and dyeing cloth, which comprises the following use methods:

s1, the material 7 enters the frame 1 through the feeding assembly 2, and the other end of the material 7 is positioned on the discharging assembly 6, so that the material 7 slides in the frame 1.

S2, after the material 7 enters the rack 1, the driving piece 13 is controlled to move in the Z axis direction by the driving piece 12 in the Z axis direction, the upper end and the lower end of the material 7 are clamped by the driving pieces 13 positioned on the upper side and the lower side of the rack 1, the driving piece 11 in the Y axis direction is controlled to move in the X axis direction by the driving piece 10 in the X axis direction, and the left end and the right end of the material 7 are leveled by the driving pieces 13 positioned on the left side and the right side of the rack 1; the transmission member 13 is operated and slides in the frame 1 under the drive of the Y-axis direction driving member 11, so that the material 7 slides in the frame 1.

S3, the material 7 passes through the spraying component 4 under the transmission of the conveying component 3; the spray member 25 uniformly sprays the treatment liquid in the treatment liquid tank 23 to the upper and lower surfaces of the material 7.

S4, after the sprayed materials 7 reach the drying component 5, the drying machine 27 dries the materials 7, the exhaust fan 29 works in the drying process, and the processing liquid gas volatilized in the heat preservation cover 28 is exhausted out of the rack 1; the exhaust gas reaches the purifier 31 through the exhaust duct 30, and the purifier 31 purifies the exhaust gas.

S5, the dried material 7 reaches the discharging assembly 6, the pretreatment is completed, and the subsequent direct-injection printing is carried out.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.