阅读说明：本技术 一种具有清洁功能的丝网印刷机 (Screen printing machine with clean function ) 是由 陆永添 于 2020-05-28 设计创作，主要内容包括：一种具有清洁功能的丝网印刷机,包括机架主体与安装于机架主体上方的丝网网框,机架主体包括上提装置与清洁装置；所述上提装置安装于所述机架主体并与所述丝网网框连接；所述上提装置用于升高所述丝网网框；所述清洁装置安装于所述机架主体；所述丝网网框被上升时,所述清洁装置于所述机架主体与所述丝网网框之间来回运动,所述清洁装置清洁所述丝网网框,本丝网印刷机能有效解决现有普通印花机采用人工擦网而出现的暂停等待现象,因机协动作来回擦网,其动作、力道、精准度能够很好的得到稳定的调整,还能使网框丝网的使用寿命有所延长。(A screen printer with a cleaning function comprises a rack main body and a screen frame arranged above the rack main body, wherein the rack main body comprises a lifting device and a cleaning device; the lifting device is arranged on the frame main body and connected with the silk screen frame; the lifting device is used for lifting the screen frame; the cleaning device is mounted on the frame main body; when the screen frame is lifted, the cleaning device moves back and forth between the frame main body and the screen frame, and the cleaning device cleans the screen frame.)

1. The utility model provides a screen printing machine with clean function, includes frame main part (1) and installs screen frame (2) in frame main part (1) top, its characterized in that: comprises a lifting device (3) and a cleaning device (4);

the lifting device (3) is arranged on the frame main body (1) and is connected with the silk screen frame (2); the lifting device (3) is used for lifting the screen frame (2);

the cleaning device (4) is mounted on the frame main body (1); when the screen frame (2) is lifted, the cleaning device (4) moves back and forth between the frame main body (1) and the screen frame (2), and the cleaning device (4) cleans the screen frame (2).

2. The screen printing machine with a cleaning function according to claim 1, wherein the cleaning device (4) comprises: the water spray device comprises a shell (4a), wherein the shell (4a) is provided with an upward opening, a water spray component (4b) and a suction assembly (4c) are arranged in the shell (4a), the bottom of the short end parts at two sides of the shell (4a) extends to a fixing part (4aa) in the direction away from the shell (4a), the fixing part (4aa) is parallel to the bottom edge of the shell (4a), and the fixing part (4aa) is provided with a first through hole (4 ab);

the suction assembly (4c) is transversely arranged on the shell (4a), a suction opening of the suction assembly (4c) is upward, two groups of water spraying assemblies (4b) are arranged on two sides of the suction assembly (4c), and the water spraying directions of the water spraying assemblies (4b) are upward and incline to one side far away from the suction assembly (4 c).

3. The screen printing machine with the cleaning function according to claim 2, wherein a mounting portion (4ca) is provided above both sides of the tube of the suction assembly (4c), the mounting portion (4ca) and the tube of the extraction assembly (4c) form a mounting groove (4cb), the mounting groove (4cb) is provided with a piece of extraction film (4cc) and a piece of film pressing strip (4cd), and the piece of extraction film (4cc) slightly protrudes from the suction port;

an air draft tube head (4ce) is arranged below one side of the tube body of the suction assembly (4c), and the air draft tube head (4ce) is communicated with the suction assembly (4 c);

and air separation groove pieces (4cf) are inserted in the pipe body of the suction assembly (4 c).

4. The screen printing machine with the cleaning function according to claim 2, wherein the water spraying assembly (4b) comprises a water pipe (4ba) and a spray head (4bb), a pipe body of the water pipe (4ba) is provided with a plurality of groups of the spray heads (4bb), the spray head (4bb) is an atomized spray head (4bb), and one end of the water pipe (4ba) is not provided with a seal.

5. The screen printing machine with a cleaning function according to claim 2, wherein the frame body (1) further includes a moving device (5), and the fixing portion (4aa) is connected to the moving device (5) by a connecting member (6).

6. The screen printing machine with cleaning function according to claim 5, wherein the moving device (5) comprises a fixed frame, a motor (5b), a transmission rod (5c), a first guide rod (5d) and a transmission belt (5 f);

the fixing frame comprises a long rod (5a), and fixing pieces (5aa) are arranged at two ends of the long rod (5 a); the fixing piece (5aa) is vertically connected with the long rod (5a) and protrudes out of the long rod (5a), and the tail end of the protruding end of the fixing piece (5aa) is provided with a first fixing surface (5 ab);

the motor (5b) is arranged on one side of the long rod (5a) relative to the first fixing surface (5ab), the output end of the motor (5b) is connected with a steering box (5e),

the transmission rod (5c) penetrates through the steering box (5e), the long rod (5a) is further provided with a fixing plate (5g), the fixing plate (5g) and the motor (5b) are located on the same side of the long rod (5a), the transmission rod (5c) penetrates through the fixing plate (5g), and the tail end of the transmission rod is provided with a first gear (5 ca);

the side, facing the first fixing surface (5ab), of the fixing plate (5g) is provided with the first guide rod (5d), the tail end of the first guide rod (5d) is provided with a second fixing surface (5da), and the second fixing surface (5da) is provided with a second gear (5 db);

the transmission belt (5f) is sleeved on the first gear (5ca) and the second gear (5 db);

the connecting piece (6) comprises a supporting plate (6a) and a shaft sleeve (6b), the supporting plate (6a) abuts against the bottom of the shell (4a), the supporting plate (6a) is provided with a second through hole (6aa), and the first through hole (4ab) corresponds to the second through hole (6 aa); the shaft sleeve (6b) is arranged at the tail end of the supporting plate (6a), the first guide rod (5d) is sleeved on the shaft sleeve (6b), and the shaft sleeve (6b) is provided with a clamping part (6 ba); the clamping portion (6ba) clamps the transmission belt (5 f).

7. The screen printing machine with a cleaning function according to claim 6, wherein the first fixing surface (5ab) and the second fixing surface (5da) are each provided with a mounting hole (1aa), the first fixing surface (5ab) is fixed to a side surface of the frame body (1), and the second fixing surface (5da) is fixed to another set of side surfaces of the frame body (1) opposite to the first fixing surface (5 ab).

8. The screen printing machine with a cleaning function according to claim 1, wherein the frame main body (1) includes a column (1a) and a fixing foot (1 b); the upright posts (1a) are fixedly arranged at four corners of the stand body (1), the fixing feet (1b) are fixedly connected to the lower end surfaces of the upright posts (1a), the stand body (1) is fixed on the ground through the fixing feet (1b), and the upper end surfaces of the upright posts (1a) are provided with mounting holes (1aa) for mounting the lifting device (3);

the lifting device (3) comprises: the device comprises a cylinder (3a), a second guide rod (3b) and a telescopic rod (3 c); the cylinder (3a) is arranged on the side edge of the upright post (1 a); the output end of the air cylinder (3a) is connected with the telescopic rod (3c), and the top of the telescopic rod (3c) is connected with the second guide rod (3 b);

the upper end face of the second guide rod (3b) is provided with a mounting surface (3 d); the mounting surface (3d) is used for connecting the silk screen frame (2), and the telescopic rod (3c) is connected with the second guide rod (3b) through the mounting surface (3 d); the bottom of the second guide rod (3b) is inserted into the mounting hole (1aa) and fixed to the upright post (1 a).

9. The screen printing machine with a cleaning function according to claim 7, wherein: the mounting surface (3d) is a plane, one end of the plane protrudes with a strip-shaped connecting strip (3da), the lower end surface of the connecting strip (3da) protrudes with a connecting block, and the connecting block is provided with a first connecting hole; a circular groove is formed in the middle of the plane, and four groups of screw holes are formed around the groove; the screw holes are used for connecting the silk screen frame (2);

the top of the telescopic rod (3c) is provided with a connecting part; the middle of the connecting part is sunken to form a connecting groove (3 ca); two opposite surfaces of the connecting groove (3ca) are provided with corresponding second connecting holes; the connecting block is placed into the connecting groove (3 ca); the first connecting hole and the second connecting hole correspond to each other.

10. The screen printing machine with a cleaning function according to claim 2, wherein mounting flanges (7) are provided at both ends of the suction assembly (4c), and the suction assembly (4c) is fixed to the inner wall of the housing (4a) by the mounting flanges (7);

the shell (4a) is located fixing flange's both sides are provided with depressed part (8), the both ends of water pipe (4ba) are provided with the gasket, depressed part (8) are put into to water pipe (4ba), will through nut and gasket water pipe (4ba) are fixed in depressed part (8).

Technical Field

The invention relates to the technical field of machinery, in particular to a screen printing machine with a cleaning function.

Background

The printing machine is widely used in various industries because different patterns can be made on a printing screen and then transferred on a printing stock. The ceramic tile decorating machine is no exception, and an automatic production line for automatic processing and butt joint of the equipment is realized, so that convenience is brought to large-scale production. However, the screen cleaning action is a fixed action which needs to be manually cleaned once every 3-15 minutes in the technology, although the screen cleaning action can effectively clean impurities on the screen, the screen cleaning action is manual operation, and the screen cleaning time is limited by various factors such as grid control, screen cleaning media, manual proficiency, action force and the like, so that the automatic production requirement cannot be met, especially wide-width large-plate bricks which are created in recent years are widened and enlarged by the aid of ceramic tile printing machine equipment, and the screen is cleaned manually, so that the phenomena of overlong consumed time and having to pause for other stations occur. Making an inherently intelligent production line less intelligent.

Disclosure of Invention

The invention aims to design a screen printing machine with a cleaning function aiming at the defects in the background technology, wherein a cleaning device is arranged on the screen printing machine, intelligent control cleaning is realized through the cleaning device, and the defects of low manual cleaning speed and nonuniform action force are overcome.

In order to achieve the purpose, the invention adopts the following technical scheme:

a screen printer with a cleaning function comprises a rack main body and a screen frame arranged above the rack main body, wherein the rack main body comprises a lifting device and a cleaning device;

the lifting device is arranged on the frame main body and connected with the silk screen frame; the lifting device is used for lifting the screen frame;

the cleaning device is mounted on the frame main body; when the screen frame is lifted, the cleaning device moves back and forth between the frame main body and the screen frame, and the cleaning device cleans the screen frame.

Preferably, the cleaning device includes: the water spraying device comprises a shell, a water spraying assembly and a suction assembly, wherein the shell is provided with an upward opening, the shell is internally provided with the water spraying assembly and the suction assembly, the bottoms of the short end parts at two sides of the shell extend to the direction far away from the shell to form a fixed part, the fixed part is parallel to the bottom edge of the shell, and the fixed part is provided with a first through hole;

the suction assembly is transversely arranged on the shell, a suction port of the suction assembly faces upwards, two groups of water spraying components are arranged on two sides of the suction assembly, and the water spraying direction of the water spraying components faces upwards and inclines to one side far away from the suction assembly.

Preferably, the upper parts of two sides of the tube body of the suction assembly are provided with mounting parts, the mounting parts and the tube body of the extraction assembly form a mounting groove, the mounting groove is provided with an extraction film and a film pressing strip, and the extraction film slightly protrudes out of the suction opening;

an air draft tube head is arranged below one side of the tube body of the suction assembly and is communicated with the suction assembly;

and air isolating groove pieces are inserted into the pipe body of the suction assembly.

Preferably, the water spray assembly comprises a water pipe and a spray head, a plurality of groups of spray heads are arranged on a pipe body of the water pipe, the spray heads are mist spray heads, and one end of the water pipe is not sealed.

Preferably, the rack main body further comprises a moving device, and the fixing part is connected with the moving device through a connecting piece.

Preferably, the moving device comprises a fixed frame, a motor, a transmission rod, a first guide rod and a transmission belt;

the fixing frame comprises a long rod, and fixing pieces are arranged at two ends of the long rod; the fixing piece is vertically connected with the long rod and protrudes out of the long rod, and a first fixing surface is arranged at the tail end of the protruding end of the fixing piece;

the motor is arranged on one side of the long rod opposite to the first fixing surface, the output end of the motor is connected with the steering box,

the transmission rod penetrates through the steering box, the long rod is further provided with a fixing plate, the fixing plate and the motor are located on the same side of the long rod, the transmission rod penetrates through the fixing plate, and a first gear is arranged at the tail end of the transmission rod;

the side, facing the first fixing surface, of the fixing plate is provided with the first guide rod, the tail end of the first guide rod is provided with a second fixing surface, and the second fixing surface is provided with a second gear;

the transmission belt is sleeved on the first gear and the second gear;

the connecting piece comprises a supporting plate and a shaft sleeve, the supporting plate abuts against the bottom of the shell, the supporting plate is provided with a second through hole, and the first through hole corresponds to the second through hole; the shaft sleeve is arranged at the tail end of the supporting plate, the first guide rod is sleeved with the shaft sleeve, and the shaft sleeve is provided with a clamping part; the clamping portion clamps the transmission belt.

Preferably, the first fixing surface and the second fixing surface are provided with mounting holes, the first fixing surface is fixed on the side surface of the rack main body, and the second fixing surface is fixed on the other group of side surfaces of the rack main body opposite to the first fixing surface.

Preferably, the rack main body comprises a stand column and a fixing foot; the upright posts are fixedly arranged at four corners of the stand main body, the fixing feet are fixedly connected to the lower end faces of the upright posts, the stand main body is fixed on the ground through the fixing feet, and the upper end faces of the upright posts are provided with mounting holes for mounting the lifting device;

the lifting device comprises: the cylinder, the second guide rod and the telescopic rod; the cylinder is arranged on the side edge of the upright post; the output end of the air cylinder is connected with the telescopic rod, and the top of the telescopic rod is connected with the second guide rod;

the upper end face of the second guide rod is provided with a mounting surface; the mounting surface is used for connecting the screen frame, and the telescopic rod is connected with the second guide rod through the mounting surface; the bottom of the second guide rod is inserted into the mounting hole and fixed to the upright post.

Preferably, the mounting surface is a plane, one end of the plane protrudes with a strip-shaped connecting strip, the lower end surface of the connecting strip protrudes with a connecting block, and the connecting block is provided with a first connecting hole; a circular groove is formed in the middle of the plane, and four groups of screw holes are formed around the groove; the screw holes are used for connecting the silk screen frame;

the top of the telescopic rod is provided with a connecting part; the middle of the connecting part is sunken to form a connecting groove; two opposite surfaces of the connecting groove are provided with corresponding second connecting holes; the connecting block is arranged in the connecting groove; the first connecting hole and the second connecting hole correspond to each other.

Preferably, mounting flanges are arranged at two ends of the suction assembly, and the suction assembly is fixed on the inner wall of the shell through the mounting flanges;

the shell is located the both sides of mounting flange are provided with the depressed part, the both ends of water pipe are provided with the gasket, the depressed part is put into to the water pipe, will through nut and gasket the water pipe is fixed in the depressed part.

Has the advantages that: the screen printing machine can effectively solve the problem of pause waiting caused by manual screen wiping of the existing common printing machine, and the screen wiping machine can wipe the screen back and forth under the action of the machine, so that the action, the strength and the precision of the screen can be well and stably adjusted, and the service life of a screen frame screen can be prolonged.

Drawings

The drawings are further illustrative of the invention and the content of the drawings does not constitute any limitation of the invention.

FIG. 1 is a schematic view of an assembly structure of a screen printing machine;

FIG. 2 is a schematic structural diagram of a main body of the rack;

FIG. 3 is a schematic view of the lifting device;

FIG. 4 is an exploded view of the pumping assembly configuration;

FIG. 5 is a front view of the pumping assembly;

FIG. 6 is a structural analysis view of FIG. 5 at A-A with the slit film and the film strip removed;

FIG. 7 is a structural profile at B-B in bitmap 5;

FIG. 8 is an assembly view of the cleaning apparatus;

FIG. 9 is an enlarged view taken at a point a in FIG. 8;

FIG. 10 is a schematic view of a mobile device

Fig. 11 is an enlarged view of 6 in fig. 10.

Wherein: the screen frame comprises a frame main body 1, an upright post 1a, a mounting hole 1aa, a fixing pin 1b, a screen frame 2, a lifting device 3, a cylinder 3a, a second guide rod 3b, an expansion rod 3c, a connecting groove 3ca, a mounting surface 3d, a connecting strip 3da, a cleaning device 4, a shell 4a, a fixing part 4aa, a first through hole 4ab, a water spraying component 4b, a water pipe 4ba, a spray head 4bb, a suction assembly 4c, a mounting part 4ca, a mounting groove 4cb, a suction rubber sheet 4cc, a layering rubber sheet 4cd, a suction pipe head 4ce, an air isolating groove sheet 4cf, a moving device 5, a long rod 5a, a fixing part 5aa, a first fixing surface 5ab, a motor 5b, a transmission rod 5c, a first gear 5ca, a first guide rod 5d, a second fixing surface 5da, a second gear 5db, a steering box 5e, a fixing plate 5f, a transmission belt connecting part 6, a supporting plate 6a and a second through hole 6aa, The shaft sleeve 6b, the clamping part 6ba, the mounting flange 7 and the concave part 8.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode with reference to the attached drawings 1-11.

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A screen printer with a cleaning function comprises a frame main body 1 and a screen frame 2 arranged above the frame main body 1, wherein the frame main body 1 comprises a lifting device 3 and a cleaning device 4;

the lifting device 3 is arranged on the frame main body 1 and connected with the silk screen frame 2; the lifting device 3 is used for lifting the screen frame 2;

the cleaning device 4 is mounted on the frame body 1; when the screen frame 2 is lifted, the cleaning device 4 moves back and forth between the frame body 1 and the screen frame 2, and the cleaning device 4 cleans the screen frame 2.

When the screen needs to be cleaned, the lifting device 3 will lift the screen frame 2 above the frame body 1 smoothly, so that a movable space is left between the frame body 1 and the screen frame 2. When the screen frame 2 is lifted to a certain distance, the cleaning device 4 is driven, the cleaning device 4 moves back and forth between the frame main body 1 and the screen frame 2, the cleaning device 4 rubs the screen back and forth in cooperation, the action, the power and the precision of the cleaning device can be well and stably adjusted, the service life of the screen frame screen can be prolonged, in addition, the screen frame 2 does not need to be taken down during cleaning, the screen in the screen frame 2 is prevented from being damaged, and when the screen frame is reset, the lifting device 3 only needs to be reset, and the full-automatic screen cleaning is completely realized.

Preferably, the cleaning device 4 comprises: the water spraying device comprises a shell 4a, wherein the shell 4a is provided with an upward opening, a water spraying component 4b and a suction assembly 4c are arranged in the shell 4a, the bottom of the short end parts at two sides of the shell 4a extends to a direction far away from the shell 4a to form a fixing part 4aa, the fixing part 4aa is parallel to the bottom edge of the shell 4a, and the fixing part 4aa is provided with a first through hole 4 ab;

the suction assembly 4c is transversely arranged on the shell 4a, a suction port of the suction assembly 4c faces upwards, two groups of water spraying components 4b are arranged on two sides of the suction assembly 4c, and the water spraying direction of the water spraying components 4b faces upwards and inclines to one side far away from the suction assembly 4 c.

When the cleaning device 4 is operated and moved, the water spraying assembly 4b sprays water in the moving direction, so that water films are formed on meshes on the silk screen, and a suction port of the suction assembly 4c is tightly attached to the silk screen, so that a closed space is formed at a contact part of the suction port and the silk screen. When the suction assembly 4c is activated, a negative pressure will be created in the suction opening and a water film will be sucked away by the suction assembly 4 c. The water film in the mesh is broken and rapidly absorbed, impurities attached to the screen can be diluted or fall off along with the breaking of the water film and are rapidly absorbed by the suction assembly 4c, and the screen can be effectively cleaned by the cleaning device 4 circulating back and forth for multiple times. The spraying direction of the water spraying component 4b inclines to one side far away from the suction assembly 4c, so that water can be sprayed, suction can be carried out, and the overall cleaning efficiency is improved.

Preferably, an installation part 4ca is arranged above two sides of the tube body of the suction assembly 4c, the installation part 4ca and the tube body of the extraction assembly 4c form an installation groove 4cb, the installation groove 4cb is provided with an extraction film 4cc and a film pressing strip 4cd, and the extraction film 4cc slightly protrudes out of the suction opening;

an air draft tube head 4ce is arranged below one side of the tube body of the suction assembly 4c, and the air draft tube head 4ce is communicated with the suction assembly 4 c;

and air separation groove pieces 4cf are inserted in the pipe body of the suction assembly 4 c.

The suction rubber sheet 4cc is soft rubber and protrudes out of the suction opening, when the suction assembly 4c is in contact with a silk screen, the silk screen can be protected, the silk screen is prevented from being scratched by the suction assembly 4c, meanwhile, the suction rubber sheet 4cc protrudes out of the suction opening and can be in full contact with the silk screen, and during suction, the contact part of the suction opening and the silk screen is guaranteed to be a closed space. The rubber strip pressing strip 4cd is a steel sheet, the rubber strip pressing strip 4cd is placed between the installation groove 4cb and the drawing film 4cc, and the rubber strip pressing strip 4cd is locked through a tooth hole in the installation part 4ca, so that the drawing film 4cc can be firmly fixed in the installation groove 4cb and is attached to the silk screen for adjustment.

Convulsions tube head 4ce is connected with outside air exhauster, the water that suction assembly 4c was taken out can pass through 4ce of convulsions tube head discharges, has alternate wind groove piece 4cf in suction assembly 4c body moreover, it is even that air intake pressure can be guaranteed to separate wind groove piece 4cf, and the amount of wind is unanimous. Because suction assembly 4c is a longer body, if do not set up 4cf of wind separation groove piece do not divide inside the suction assembly 4c, with it is close to convulsions tube head 4ce the suction opening will be windy, keep away from 4ce of convulsions tube head the suction opening will not have windy.

Preferably, the water spraying assembly 4b comprises a water pipe 4ba and a spray head 4bb, a plurality of groups of spray heads 4bb are arranged on a pipe body of the water pipe 4ba, the spray heads 4bb are mist spray heads 4bb, and one end of the water pipe 4ba is not sealed.

The spray head 4bb is a mist spray head 4bb, and a water film can be more easily formed on the screen during water spraying. One section of the water pipe 4ba is not provided with a seal, and one end which is not sealed can be externally connected with a water source.

Preferably, the rack body 1 further includes a moving device 5, and the fixing portion 4aa is connected to the moving device 5 through a connecting member 6.

The moving device 5 is installed on the frame body 1, and the moving device 5 drives the cleaning device 4 to move. The overall cleaning of the screen by the cleaning device 4 is achieved.

Preferably, the moving device 5 comprises a fixed frame, a motor 5b, a transmission rod 5c, a first guide rod 5d and a transmission belt 5 f;

the fixing frame comprises a long rod 5a, and fixing pieces 5aa are arranged at two ends of the long rod 5 a; the fixing piece 5aa is vertically connected with the long rod 5a and protrudes out of the long rod 5a, and the tail end of the protruding end of the fixing piece 5aa is provided with a first fixing surface 5 ab;

the motor 5b is arranged on one side of the long rod 5a relative to the first fixing surface 5ab, the output end of the motor 5b is connected with a steering box 5e,

the transmission rod 5c penetrates through the steering box 5e, the long rod 5a is further provided with a fixing plate 5g, the fixing plate 5g and the motor 5b are located on the same side of the long rod 5a, the transmission rod 5c penetrates through the fixing plate 5g, and the tail end of the transmission rod is provided with a first gear 5 ca;

the side of the fixing plate 5g facing the first fixing surface 5ab is provided with the first guide rod 5d, the tail end of the first guide rod 5d is provided with a second fixing surface 5da, and the second fixing surface 5da is provided with a second gear 5 db;

the transmission belt 5f is sleeved on the first gear 5ca and the second gear 5 db;

the connecting piece 6 comprises a supporting plate 6a and a shaft sleeve 6b, the supporting plate 6a abuts against the bottom of the shell 4a, the supporting plate 6a is provided with a second through hole 6aa, and the first through hole 4ab corresponds to the second through hole 6 aa; the shaft sleeve 6b is arranged at the tail end of the supporting plate 6a, the first guide rod 5d is sleeved on the shaft sleeve 6b, and the shaft sleeve 6b is provided with a clamping part 6 ba; the clamping portion 6ba clamps the belt 5 f.

The fixed frame is fixed on the side surface of the machine frame main body 1, the direction of the output force of the output shaft of the motor 5b can be changed by the steering box 5e, the transmission rod 5c is transmitted, the first gear 5ca is arranged at the tail ends of the two sides of the transmission rod 5c, the second gear 5db is arranged on the first guide rod 5d, the transmission belt 5f is sleeved on the first gear 5ca and the second gear 5db, when the transmission rod 5c rotates, the first gear 5ca rotates along with the transmission belt 5f to move, as the shell 4a clamps the transmission belt 5f through the clamping part 6ba, the transmission belt 5f moves to drive the cleaning device 4 to move, in addition, the shell 4a sleeves the first guide rod 5d through the shaft sleeve 6b, the first guide rod 5d can assist the cleaning device 4 to move and support a part of the weight of the cleaning device 4 during the movement of the cleaning device 4, so that the cleaning device 4 can be moved smoothly.

Preferably, the first fixing surface 5ab and the second fixing surface 5da are both provided with mounting holes 1aa, the first fixing surface 5ab is fixed to a side surface of the rack body 1, and the second fixing surface 5da is fixed to another group of side surfaces of the rack body 1 opposite to the first fixing surface 5 ab.

The first fixing surface 5ab is fixed on the side surface of the rack main body 1, and since the first fixing surface 5ab protrudes from the fixing piece 5aa, a protruding space is reserved when the cleaning device is installed on the rack main body 1, and when the cleaning device does not need to clean the silk screen, the cleaning device 4 can be placed in the protruding space, so that subsequent production is not affected.

Preferably, the frame body 1 comprises a vertical column 1a and a fixed foot 1 b; the upright posts 1a are fixedly installed at four corners of the rack main body 1, the fixing feet 1b are fixedly connected to the lower end surfaces of the upright posts 1a, the rack main body 1 is fixed on the ground through the fixing feet 1b, and the upper end surfaces of the upright posts 1a are provided with installation holes 1aa for installing the lifting devices 3;

the lifting device 3 comprises: the cylinder 3a, the second guide rod 3b and the telescopic rod 3 c; the cylinder 3a is arranged on the side edge of the upright post 1 a; the output end of the cylinder 3a is connected with the telescopic rod 3c, and the top of the telescopic rod 3c is connected with the second guide rod 3 b;

the upper end face of the second guide rod 3b is provided with a mounting surface 3 d; the mounting surface 3d is used for connecting the silk screen frame 2, and the telescopic rod 3c is connected with the second guide rod 3b through the mounting surface 3 d; the bottom of the second guide bar 3b is inserted into the mounting hole 1aa and fixed to the pillar 1 a.

When the screen frame needs to be lifted up, the air cylinder 3a is driven to drive the telescopic rod 3c to extend upwards, the telescopic rod 3c is connected with the second guide rod 3b through the mounting surface 3d, and when the telescopic rod 3c extends upwards, the second guide rod 3b is pulled up from the upright post 1a by the mounting surface 3 d. The mounting surface 3d is connected to the screen frame 2, and the screen frame 2 is also lifted up. The second guide bars 3b are able to support a portion of the weight of the screen frame 2. Reduce the heavy burden of telescopic link 3c, improve telescopic link 3c life.

Preferably, the mounting surface 3d is a plane, one end of the plane protrudes with a strip-shaped connecting strip 3da, the lower end surface of the connecting strip 3da protrudes with a connecting block, and the connecting block is provided with a first connecting hole; a circular groove is formed in the middle of the plane, and four groups of screw holes are formed around the groove; the screw holes are used for connecting the silk screen frame 2;

the top of the telescopic rod 3c is provided with a connecting part; the middle of the connecting part is sunken to form a connecting groove 3 ca; two opposite surfaces of the connecting groove 3ca are provided with corresponding second connecting holes; the connecting block is arranged in the connecting groove 3 ca; the first connecting hole and the second connecting hole correspond to each other.

The telescopic rod 3c is inserted into and wrapped by the connecting block through the connecting part, and is fixedly connected with the first connecting hole and the second connecting hole through the matching of a screw and a nut. When the telescopic rod 3c needs to be replaced, a screw connected with the first connecting hole can be detached, the mounting surface 3d and the telescopic rod 3c are detached, and the connection mode is convenient and rapid to detach and install. In addition, the connection requirement of the screw and the nut can be met by fixing the screw and the nut, and the production cost is reduced.

Preferably, mounting flanges 7 are arranged at two ends of the suction assembly 4c, and the suction assembly 4c is fixed on the inner wall of the shell 4a through the mounting flanges 7;

the shell 4a is located the both sides of mounting flange are provided with depressed part 8, the both ends of water pipe 4ba are provided with the gasket, depressed part 8 is put into to water pipe 4ba, will through nut and gasket water pipe 4ba is fixed in depressed part 8.

Through mounting flange 7 can with suction assembly 4c is firm fixes in shell 4a, prevents to remove in-process and takes place the skew for can not form airtight space between suction opening and the silk screen, can't extract the water film on the silk screen.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.