CN216885755U - Screen printing machine - Google Patents

Abstract

The utility model provides a screen printing machine, which relates to the technical field of printing machines and comprises a machine table, wherein a feeding mechanism, a screen printing mechanism and a discharging mechanism are sequentially arranged on the machine table according to the process steps; the pan feeding mechanism includes first conveying assembly, first conveying assembly is provided with locating component and first centre gripping subassembly, silk screen printing mechanism includes second conveying assembly, second conveying assembly department is provided with lift supporting component and second centre gripping subassembly, the top of lift supporting component is provided with the fixed subassembly of screen frame, the top of the fixed subassembly of screen frame is provided with the printing module. The automatic feeding and clamping device has the advantages that related structures are arranged to position and clamp the printing stock in the feeding and printing processes, the structure is ingenious, the automation degree is high, and the printing quality is improved.

Description

Screen printing machine

Technical Field

The utility model relates to the technical field of printing equipment, in particular to a screen printing machine.

Background

The screen printing machine is also a screen printing machine, is a machine for printing by using screen printing plate, and belongs to one type of printing machines. A screen printer is a machine that prints characters and images, and is a generic name of a machine or apparatus for producing printed matters. The screen printing machine belongs to the representative printing equipment in the porous printing machine, and the material for manufacturing the screen can be nylon wire, copper wire, steel wire or stainless steel wire besides real silk. And can be classified into a flat screen printer, a curved screen printer, a rotary screen printer, and the like.

The screen printing machine is widely used and can meet the printing requirements of various products, so that the screen printing machine is popular with manufacturers. However, the current screen printer is generally simple in structure, lacks of positioning and fixing functions on a printing stock, and influences the printing effect.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects in the prior art, provides the screen printing machine, has the advantages that the related structures are arranged to position and clamp the printing stock in the feeding and printing processes, the structure is ingenious, the automation degree is high, and the printing quality is improved.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

a screen printing machine comprises a machine table, wherein a feeding mechanism, a screen printing mechanism and a discharging mechanism are sequentially arranged on the machine table according to the process steps; the pan feeding mechanism includes first conveyor components, first conveyor components is provided with locating component and first centre gripping subassembly, silk screen printing mechanism includes second conveyor components, second conveyor components department is provided with lift supporting component and second centre gripping subassembly, lift supporting component's top is provided with the fixed subassembly of screen frame, the top of the fixed subassembly of screen frame is provided with the printing assembly.

Furthermore, first conveying component includes a plurality of first conveyer belts, be provided with inductor and first cylinder seat between the first conveyer belt, inductor and first cylinder seat all with the setting of staggering of first conveyer belt, be provided with first cylinder on the first cylinder seat, first cylinder is articulated with the one end of connecting plate, the other end of connecting plate is articulated with the centre of pin, the lower extreme of pin with the piston rod of first cylinder is articulated.

Furthermore, the first clamping assembly is positioned on the left side and the right side of the first conveying belt, the first clamping assembly comprises a first connecting plate, a second connecting plate, a third connecting plate and a first guide rail, the upper end of the second connecting plate is connected with the first connecting plate, the lower end of the second connecting plate is connected with the third connecting plate, the first connecting plate and the third connecting plate are both perpendicular to the second connecting plate, a plurality of centering baffle wheels are rotatably arranged on the first connecting plate and are higher than the surface of the first conveying belt, the third connecting plate is slidably connected on the first guide rail, a slot for moving the second connecting plate is reserved on the machine table, the machine table comprises a sixth connecting plate, a sixth air cylinder is arranged on the sixth connecting plate, a piston rod of the sixth air cylinder is connected with a joint bearing, the joint bearing is connected on the sixth connecting plate, the sixth cylinder is electrically connected with the inductor.

Furthermore, the second conveying component comprises a plurality of second conveying belts, the second conveying belts are connected with the first conveying belts, the lifting support component comprises a horizontal bracket, the horizontal bracket is connected with a lifting component, a plurality of cutter supporting strips are arranged on the horizontal bracket, the lifting component comprises a first motor and a worm gear reducer, the first motor is connected with the worm gear reducer, the worm gear reducer is provided with a lifting crankshaft, the lifting crankshaft is connected with one end of a wave box connecting rod, the other end of the wave box connecting rod is connected with one end of a lifting swing block, the other end of the lifting swing block is connected with a lifting swing shaft, two ends of the lifting swing shaft are rotatably connected on the machine table and comprise a platform lifting clamp and a lifting support block, one end of the platform lifting clamp is connected and fixed on the lifting swing shaft, the other end of the lifting supporting block is hinged with the lower end of the lifting supporting block, and the upper end of the lifting supporting block is connected with the transverse bracket; the horizontal bracket is provided with a cutter supporting strip cross beam, a magnet is embedded in the cutter supporting strip cross beam, a fourth connecting plate made of magnetic substances is connected to the lower portion of the cutter supporting strip, and the fourth connecting plate is fixed to the magnet in an adsorption mode.

Furthermore, the second clamping assembly comprises a left clamping component and a right clamping component, the left clamping component and the right clamping component are identical in structure and are symmetrically located on two sides of the second conveying belt, the left clamping component and the right clamping component comprise sliding plates, the sliding plates are slidably connected to the second guide rail, nuts are arranged on the sliding plates, the nuts are in threaded connection with the screw rods, the end portions of the screw rods are connected with the second motor, the sliding plates are connected with support blocks, and support plates are arranged on one sides, close to the cutter supporting strips, of the support blocks; the support block is connected with an angle iron plate, a second cylinder is arranged on the angle iron plate, and a piston rod of the second cylinder is connected with the support plate.

Furthermore, the device comprises a front positioning bearing and a lifting guide groove, wherein the front positioning bearing is rotatably connected to a brick blocking strip, the brick blocking strip is positioned beside the second conveying belt, one end of the brick blocking strip is hinged to a brick blocking strip supporting frame, the other end of the brick blocking strip is connected with a brick blocking strip connecting plate, the lower end of the brick blocking strip connecting plate is connected with a second air cylinder seat, and the second air cylinder seat is hinged to a piston rod of a third air cylinder; the lift guide slot is connected on the horizontal bracket, the lift guide slot is located other, the direction that sets up of second conveyer belt with the transmission direction of second conveyer belt is the same, it is provided with the slide to slide on the lift guide slot, it is provided with back positioning bearing to rotate on the slide.

Furthermore, the screen frame fixing assembly comprises a third guide rail, a first fixing mechanism and a second fixing mechanism are arranged on the third guide rail in a sliding mode, the first fixing mechanism and the second fixing mechanism are identical in structure and symmetrically arranged, the first fixing mechanism and the second fixing mechanism comprise front screen frames, screen mounting frame plates are connected above the front screen frames, and the screen mounting frame plates are connected to the third guide rail in a sliding mode; the first fixing mechanism and/or the second fixing mechanism are/is connected with a screw rod adjusting assembly; the screw rod adjusting assembly comprises an adjusting handle, a screen rod and an adjusting guide rod, the adjusting handle is connected with the screen rod, the screen rod is rotatably connected with the adjusting guide rod, the adjusting guide rod is fixedly connected to the adjusting pressing block, the third guide rail is connected with a connecting beam, and the screen rod is in threaded connection with the connecting beam; the adjustable silk screen rod adjusting device comprises an adjusting threaded sleeve, wherein one end of the adjusting threaded sleeve is rotatably connected with the adjusting guide rod, and the other end of the adjusting threaded sleeve is in threaded connection with the silk screen rod.

Furthermore, the printing component comprises a machine head sliding rail, a scraper seat block is arranged on the machine head sliding rail in a sliding mode, a fourth cylinder is arranged on the scraper seat block, a piston rod of the fourth cylinder is connected with a scraper connecting plate, a scraper guide rod is arranged on the scraper connecting plate in a sliding mode, the upper end of the scraper guide rod is connected with the scraper connecting plate, and the lower end of the scraper guide rod is connected with a scraper.

Furthermore, the discharging mechanism comprises a third conveying assembly, the third conveying assembly is connected with the second conveying assembly, the machine table is provided with a channel, the third conveying assembly is located above the channel and comprises a bearing mounting seat and a lifting plate, the bearing mounting seat is connected to the machine table, a connecting shaft is connected to the bearing mounting seat, a fifth connecting plate is connected to the lifting plate and is connected with one end of a mounting plate, a bearing is arranged at the other end of the mounting plate and is connected to the connecting shaft, a cylinder head support is connected to the lower surface of the lifting plate, and the cylinder head support is connected with a cylinder head of a fifth cylinder.

Furthermore, sealing plates are arranged on two sides of the channel and detachably connected to the machine table.

Compared with the prior art, the utility model has the beneficial effects that:

in the feeding and printing processes, the related structures are arranged to position and clamp the printing stock, the structure is ingenious, the automation degree is high, and the printing quality is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, with the understanding that the present disclosure is to be considered as an exemplification of the utility model and is not intended to limit the utility model to the embodiments illustrated in the drawings, in which:

FIG. 1 is an overall view of a screen printing machine of the present invention;

FIG. 2 is a top view of the feed mechanism;

FIG. 3 is a first structural schematic view of the first clamping assembly;

FIG. 4 is a second structural schematic of the first clamping assembly;

FIG. 5 is a schematic structural view of the first cylinder, the connecting plate and the stop lever;

FIG. 6 is a schematic structural view of a silk-screen printing mechanism;

FIG. 7 is a top view of a screen printing mechanism;

FIG. 8 is a schematic structural view of a second clamping assembly;

FIG. 9 is a schematic view of the structure of the slide, the pallet and the pallet;

FIG. 10 is a schematic structural view of a second conveyor assembly;

FIG. 11 is a schematic view of the cross bracket and the lifting member;

FIG. 12 is a partial schematic view of the lifting member;

FIG. 13 is a schematic view of the construction of the lifting crankshaft;

FIG. 14 is a schematic view of the construction of the frame attachment assembly;

FIG. 15 is a schematic structural view of a printing element;

FIG. 16 is a schematic view of the discharge mechanism;

FIG. 17 is a first schematic structural view of a third conveyor assembly;

fig. 18 is a second structural schematic diagram of the third conveyor assembly.

In the figure: 1-machine table, 101-slotting, 102-channel, 2-feeding mechanism, 3-silk-screen mechanism, 4-discharging mechanism, 5-screen frame fixing component, 6-printing component, 7-first conveying belt, 8-inductor, 9-first cylinder seat, 10-first cylinder, 11-connecting plate, 12-stop lever, 13-first connecting plate, 14-second connecting plate, 15-third connecting plate, 16-first guide rail, 17-centering catch wheel, 18-second conveying belt, 19-cross bracket, 20-cutter bar, 21-first motor, 22-worm gear reducer, 23-lifting crankshaft, 24-bellows connecting rod, 25-lifting pendulum block, 26-lifting pendulum shaft, 27-platform lifting clamp, 28-lifting support block, 29-supporting blade bar beam, 30-magnet, 31-fourth linkage plate, 32-sliding plate, 33-second guide rail, 34-nut, 35-screw rod, 36-second motor, 37-support block, 38-support plate, 39-angle iron plate, 40-second cylinder, 41-front positioning bearing, 42-lifting guide groove, 43-supporting frame of brick blocking bar, 44-connecting plate of brick blocking bar, 45-third cylinder, 46-sliding seat, 47-rear positioning bearing, 48-third guide rail, 49-first fixing mechanism, 50-second fixing mechanism, 51-front silk screen frame, 52-silk screen mounting frame plate, 53-adjusting handle, 54-silk screen rod, 55-adjusting guide rod, 56-adjusting press block, 57-coupling beam, 58-adjusting screw sleeve, 59-machine head slide rail, 60-scraper seat block, 61-fourth air cylinder, 62-scraper coupling plate, 63-scraper guide rod, 64-scraper, 65-third conveying assembly, 66-bearing mounting seat, 67-lifting plate, 68-coupling shaft, 69-fifth coupling plate, 70-mounting plate, 71-air cylinder head support, 72-fifth air cylinder, 73-sealing plate, 74-sixth coupling plate, 75-sixth air cylinder, 76-joint bearing and 77-brick blocking strip.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

As shown in fig. 1 to 18, a screen printer, which is mainly used for printing printed materials with a certain thickness such as metal plates, plastic plates or ceramic plates, includes a machine table 1, a feeding mechanism 2, a screen printing mechanism 3 and a discharging mechanism 4 are sequentially arranged on the machine table 1 according to the process steps, after the printed materials enter from the feeding mechanism 2, the printed materials are printed in the screen printing mechanism 3 and then output from the discharging mechanism 4, wherein the feeding mechanism 2 includes a first conveying assembly, the first conveying assembly is provided with a positioning assembly and a first clamping assembly, the positioning assembly and the first clamping assembly are used for adjusting the position of the printed materials before entering the printing and then inputting the printed materials for printing, the screen printing mechanism 3 includes a second conveying assembly, a lifting support assembly and a second clamping assembly are arranged at the second conveying assembly, the lifting support assembly is used for supporting the printed materials, the second clamping assembly is used for clamping the printing stock and then printing by the printing assembly 6, a screen frame fixing assembly 5 is arranged above the lifting supporting assembly, the screen frame fixing assembly 5 is used for fixing a screen frame, the printing assembly 6 is arranged above the screen frame fixing assembly 5, the printing assembly 6 scrapes ink on the screen frame in the screen frame fixing assembly 5, and the ink is printed on the printing stock through the screen frame.

In this embodiment, the first conveying assembly, the second conveying assembly and the subsequent third conveying assembly are all conveyed in a belt transmission manner, that is, a driving roller, a driving wheel, a driven wheel and a conveying belt are arranged, the driving roller is connected with a driving motor, the driving wheel is connected to the driving roller, and the driving wheel is connected with the driven wheel through the conveying belt, so that the driving motor is started to finally drive the conveying belt to move, and a printing stock is conveyed; the belt transmission structure is prior art and will not be described herein.

The first conveying assembly comprises a plurality of first conveying belts 7, an inductor 8 and a first cylinder seat 9 are arranged between the first conveying belts 7, the inductor 9 and the first cylinder seat 9 are arranged in a staggered mode with the first conveying belts 7, so that the walking of the first conveying belts 7 is not affected, a first cylinder 10 is arranged on the first cylinder seat 9, the first cylinder 10 is hinged to one end of a connecting plate 11, the other end of the connecting plate 11 is hinged to the middle of a stop lever 12, and the lower end of the stop lever 12 is hinged to a piston rod of the first cylinder 11; as can be seen from fig. 2, the first cylinder seat 9, the first cylinder 10 and the fittings connected thereto are two in number, when the bar 12 is turned up, in order to block the advance of the printing material, the front end of the printing material is caused to swing flat, and when the bar 12 is in the blocking state, the upper end of the bar 12 is higher than the level of the first conveyor belt 7, so as to block the printing material conveyed on the first conveyor belt 7. As can be seen from the structure shown in fig. 5, when the piston rod of the first cylinder 10 retracts, the blocking rod 12 is pulled to rotate clockwise, and the upper end of the blocking rod 12 is lower than the first conveyor belt 7, so that the forward conveying of the printing stock is not affected, when the printing stock needs to be blocked and positioned, the piston rod of the first cylinder 10 extends, the blocking rod 12 is pushed to rotate counterclockwise to the state shown in fig. 5, and at this time, the upper end of the blocking rod 12 is higher than the first conveyor belt 7, so that the printing stock is blocked.

First centre gripping subassembly is located the left and right sides of first conveyer belt 7, and first centre gripping subassembly includes first connecting plate, second connecting plate, third connecting plate and first guide rail, and the upper end and the first connecting plate of second connecting plate are connected, the lower extreme is connected with the third connecting plate, and first connecting plate, third connecting plate all set up with the second connecting plate is perpendicular, rotate on the first connecting plate and are provided with a plurality of centering catch wheels, and centering catch wheel is higher than the surface of first conveyer belt, and third connecting plate sliding connection is on first guide rail, and the board is reserved has the fluting that supplies second connecting plate to move the usefulness, including the sixth connecting plate, be provided with the sixth cylinder on the sixth connecting plate, the piston rod and the joint bearing of sixth cylinder are connected, joint bearing connects on the sixth connecting plate, the sixth cylinder with inductor electric connection.

First connecting plate 13, second connecting plate 14, third connecting plate 15 and first guide rail 16, first guide rail 16 is fixed mounting in the inside of board 1, the upper end and the first connecting plate 13 of second connecting plate 14 are connected fixedly, the lower extreme is connected fixedly with third connecting plate 15, and first connecting plate 13, third connecting plate 15 all set up with second connecting plate 14 is perpendicular, it is provided with a plurality of centering backing wheels 17 to rotate on the first connecting plate 13, centering backing wheel 17 is higher than the surface of first conveyer belt 7, therefore when the first connecting plate 13 of the first conveyer belt 7 left and right sides carries out the relative motion, then can press from both sides tightly the stock through centering backing wheel 17, make the stock adjust. The third coupling plate 15 is connected to the first guide rail 16 in a sliding manner, and the machine table 1 is reserved with a slot 101 for moving the second coupling plate 14, and includes a sixth coupling plate 74, a sixth air cylinder 75 is arranged on the sixth coupling plate 74, a piston rod of the sixth air cylinder 75 is connected with a joint bearing 76, the joint bearing 76 is connected to the third coupling plate 15, therefore, the sixth air cylinder 75 is used for pushing and pulling the third connecting plate 15, clamping and loosening of the printing stock are carried out, the sixth air cylinder 75 and the first air cylinder 10 are both electrically connected with the inductor 8, one-time work is carried out after signals transmitted by the inductor 8 are received, the first air cylinder 10 can drive the gear rod 12 to rotate to block the printing stock, the sixth air cylinders 75 on the two sides can drive the corresponding centering stop wheels 17 to clamp the printing stock, so that the printing stock enters the post-process after being straightened, and the printing precision is improved; the spherical plain bearing 76 is a prior art bearing, and the plain bearing 76 can bear a large load, and since the sliding surface is spherical, it can also allow a tilting motion (i.e., a centering motion) within a certain viewpoint range, and can work normally when the bearing shaft is not concentric with the housing hole, thereby allowing smooth motion using the above structure.

The sensor 8 is a light sensor, also commonly called a photo eye, which can sensitively sense light energy from ultraviolet light to infrared light and convert the light energy into an electrical signal, and is a device in the prior art, and will not be described herein, and the sensor 8 is lower than the surface of the first conveyor belt 7, and does not affect the conveying of the printing stock.

The second conveying assembly comprises a plurality of second conveying belts 18, the second conveying belts 18 are connected with the first conveying belts 7 and used for receiving the printing stock conveyed from the first conveying belts 7 and straightened, the lifting supporting assembly comprises transverse brackets 19, the transverse brackets 19 are connected with a lifting part, a plurality of cutter supporting strips 20 are arranged on the transverse brackets 19, the cutter supporting strips 20 are used for supporting the printing stock, a space for placing the second conveying assembly is reserved between the cutter supporting strips 20, the lifting part comprises a first motor and a worm and gear reducer, the first motor 21 and the worm and gear reducer 22 are arranged on the lifting part, the first motor 21 is connected with the worm and gear reducer 22, the worm and gear reducer 22 is provided with a lifting crankshaft 23, the lifting crankshaft 23 is connected with one end of a wave box connecting rod 24, the other end of the wave box connecting rod 24 is hinged with one end of a lifting swinging block 25, and the other end of the lifting swinging block 25 is fixedly connected with a lifting swinging shaft 26, the two ends of the lifting pendulum shaft 26 are rotatably connected to the machine table 1 through bearing seats, and comprise a platform lifting clamp 27 and a lifting support block 28, one end of the platform lifting clamp 27 is fixedly connected to the lifting pendulum shaft 26, the other end of the platform lifting clamp is hinged to the lower end of the lifting support block 28, and the upper end of the lifting support block 28 is connected with the transverse bracket 19; from the above structure, it can be seen that the first motor 21 is started, the lifting crankshaft 23 is driven to rotate by the worm gear reducer 22, the rotation of the lifting crankshaft 23 drives the wave box connecting rod 24 to move, the movement of the wave box connecting rod 24 drives the lifting pendulum block 25 to rotate, the lifting crankshaft 23 belongs to the prior art, as can be seen from fig. 13, since the connecting hole between the lifting crankshaft 23 and the wave box connecting rod 24 is eccentric, a moving space is formed when the wave box connecting rod 24 and the lifting pendulum block 25 rotate, the other end of the lifting pendulum block 25 is clamped and fixed on the lifting pendulum shaft 26, the rotation of the lifting pendulum block 25 drives the lifting pendulum shaft 26 to rotate, one end of the platform lifting clamp 27 is clamped and fixed on the lifting pendulum shaft 26, so as to drive the platform lifting clamp 27 to rotate, thereby drive the lifting support block 28 to push the transverse bracket 19 to perform lifting movement, and by the forward rotation or reverse rotation of the first motor 21, the lifting of the cross bracket 19 can be finally driven. As can be seen from fig. 11, the lifting swing block 25, the lifting swing shaft 26, the platform lifting clamp 27, the lifting support block 28 and the lifting link rod (not shown) are respectively disposed on both sides of the cross bracket 19, and both ends of the lifting link rod are hinged to the lifting swing blocks 25 on both sides of the cross bracket 19, so that only one first motor 21 is needed to drive the components on both sides to lift up and down the cross bracket 19, and the structure is ingenious.

The transverse bracket 19 is provided with a cutter supporting strip beam 29, a magnet 30 is embedded in the cutter supporting strip beam 29, a fourth connecting plate 31 made of magnetic substances is connected below the cutter supporting strip 20, for example, the fourth connecting plate 31 made of aluminum alloy is adopted, and the fourth connecting plate 31 is fixedly adsorbed on the magnet 30, so that the cutter supporting strip 20 is detachably installed and fixed on the cutter supporting strip beam 29 in an adsorption mode, the replacement and maintenance of the cutter supporting strip 20 are facilitated, the number of the cutter supporting strips 20 can be increased or decreased according to actual production requirements, and the adaptability is good.

The lifting of the cutter supporting strip 20 can be controlled through the lifting component, when the cutter supporting strip 20 is higher than the surface of the second conveyor belt 18, the printing stock is lifted, and when the cutter supporting strip is lower than the surface of the second conveyor belt 18, the conveying of the printing stock is not influenced.

The second clamping assembly comprises a left clamping component and a right clamping component, the left clamping component and the right clamping component have the same structure and are symmetrically positioned at two sides of the second conveying belt 18 and are mainly used for clamping a printing stock for printing by the printing assembly 6, the left clamping component and the right clamping component comprise sliding plates 32, the sliding plates 32 are slidably connected on a second guide rail 33, nuts 34 are arranged on the sliding plates 32, the nuts 34 are in threaded connection with screw rods 35, the end parts of the screw rods 35 are connected with a second motor 36, supporting blocks 37 are connected on the sliding plates 32, and supporting plates 38 are arranged on one sides, close to the cutter supporting strips 20, of the supporting blocks 37, so that the working modes of the nuts 34 and the screw rods 35 are known, the second motor 36 drives the screw rods 35 to rotate and can drive the sliding plates 32 to slide on the guide rail, so that the supporting plates 38 clamp the printing stock, and when the screw rods 35 are designed, the left and right textures are opposite, when the screw 35 rotates in one direction, the left clamping assembly and the right clamping assembly can be synchronously controlled to move oppositely or reversely to clamp or loosen the printing stock; the supporting block 37 is connected with an angle iron plate 39, a second air cylinder 40 is arranged on the angle iron plate 39, and a piston rod of the second air cylinder 40 is connected with the supporting plate 37.

The height of the supporting plate 38 can be controlled through the extension and contraction of the piston rod of the second air cylinder 40, so that the device can be suitable for printing materials with different thicknesses or heights, the supporting block 37 and the supporting plate 38 are not fixed with each other, but the gap between the supporting block and the supporting plate 38 is small, and when the supporting plate 38 clamps the printing materials, the supporting block 38 provides a reclining force for the supporting plate 38, so that the clamping effect is enhanced.

The device comprises a front positioning bearing 41 and a lifting guide groove 42, wherein the front positioning bearing 41 is rotatably connected to a brick blocking strip 77, the brick blocking strip 77 is positioned beside a second conveying belt 18, one end of the brick blocking strip 77 is hinged to a brick blocking strip supporting frame 43, the other end of the brick blocking strip is connected with a brick blocking strip connecting plate 44, the lower end of the brick blocking strip connecting plate 44 is connected with a second air cylinder seat (not shown), the second air cylinder seat is hinged to a piston rod of a third air cylinder 45, in the conventional conveying process, the front positioning bearing 41 is lower than the second conveying belt 18, when a printing stock needs to be blocked, the piston rod of the third air cylinder 45 is lifted, the brick blocking strip connecting plate 44 is driven to be lifted, so that the brick blocking strip 77 and the front positioning bearing 41 are lifted, and the front positioning bearing 41 is higher than the surface of the second conveying belt 18, namely, the forward printing stock can be blocked.

The lifting guide groove 42 is connected on the transverse bracket 19, follow the rising of the transverse bracket 19, the lifting guide groove 42 is positioned beside the second conveying belt 18, the setting direction is the same as the transmission direction of the second conveying belt 18, a slide seat 46 is arranged on the lifting guide groove 42 in a sliding manner, a rear positioning bearing 47 is arranged on the slide seat 46 in a rotating manner, the slide seat 46 can be driven by a cylinder or a screw rod structure to slide in the lifting guide groove 42, the position is not limited, the rear positioning bearing 47 is driven to move forwards, the front side and the rear side of a printing stock are clamped by the positioning bearing 41 before matching, the brick blocking strip 77 and the lifting guide groove 42 are arranged in a staggered manner, and the interference is not caused between the two.

The working principle of the structure is that when the printing stock enters the printing position through the second conveying belt 18, the piston rod of the third air cylinder 45 extends out at the moment to drive the front positioning bearing 41 to rise so as to block the advance of the printing stock; meanwhile, the first motor 21 of the lifting assembly rotates to drive the transverse bracket 19 to ascend, so that the cutter supporting strip 20 ascends to be higher than the surface of the second conveying belt 18 to support the printed materials, and the situation that the supported printed materials are not completely higher than the front positioning bearing 41 is set, namely the front positioning bearing 41 still blocks the front end of the printed materials, and the ascending of the transverse bracket 19 also drives the ascending of the lifting guide groove 42 (when the transverse bracket 19 does not ascend, the rear positioning bearing 47 is lower than the second conveying belt 18 and does not influence the input of the printed materials), at the moment, the sliding seat 46 drives the rear positioning bearing 47 to move forwards in the lifting guide groove 42, and is matched with the front positioning bearing 41 to clamp the front side and the rear side of the printed materials together; in addition, left clamping member and right clamping member also carry out work in step, and second motor 36 starts, can drive left clamping member and right clamping member and carry out the relative motion to the tray 37 and the layer board 38 that make both sides press from both sides the left and right sides of stock jointly and press from both sides tightly, and finally press from both sides tightly fixedly four directions of stock, supply the silk screen printing subassembly to print, are favorable to improving printing quality.

The screen frame fixing assembly 5 comprises a third guide rail 48, a first fixing mechanism 49 and a second fixing mechanism 50 are arranged on the third guide rail 48 in a sliding manner, the first fixing mechanism 49 and the second fixing mechanism 50 are identical in structure and symmetrically arranged, the first fixing mechanism 49 and the second fixing mechanism 50 comprise a front screen frame 51, a screen mounting frame plate 52 is connected above the front screen frame 51, and the screen mounting frame plate 52 is connected to the third guide rail 48 in a sliding manner; the first fixing mechanism 49 and/or the second fixing mechanism 50 are/is connected with a screw rod adjusting assembly; the screw rod adjusting assembly comprises an adjusting handle 53, a screen rod 54 and an adjusting guide rod 55, the adjusting handle 53 is connected with the screen rod 54, the screen rod 54 is rotatably connected with the adjusting guide rod 55, the adjusting guide rod 55 is fixedly connected to an adjusting press block 56, a connecting beam 57 is connected to the third guide rail 48, the screen rod 54 is in threaded connection with the connecting beam 57, and the screen frame is fixed between the front screen frames 51 corresponding to the first fixing mechanism 49 and the second fixing mechanism 50; the adjusting device comprises an adjusting threaded sleeve 58, one end of the adjusting threaded sleeve 58 is rotatably connected with the adjusting guide rod 55, the other end of the adjusting threaded sleeve 58 is in threaded connection with the screen rod 54, specifically, an internal thread is arranged at a joint of the inner wall of the adjusting threaded sleeve 58 and the screen rod 54, and is matched with the thread on the screen rod 54 for use, in the process of quick adjustment, namely the rotating process of the adjusting handle 53, the adjusting threaded sleeve 58 and the screen rod 54 move synchronously without moving mutually, and when further fine adjustment is needed (for example, after a screen frame is clamped, when the screen frame needs to be further clamped), the adjusting threaded sleeve 58 and the screen rod 54 move mutually by rotating the adjusting threaded sleeve 58, so that the adjusting threaded sleeve 58 can push the adjusting guide rod 55, the first fixing mechanism 49 can perform fine adjustment movement, the fine adjustment effect is achieved, and the clamping precision is enhanced.

As shown in fig. 15, the printing assembly 6 includes a head slide rail 59, the head slide rail 59 is fixed on the machine platform 1, a scraper seat block 60 is slidably disposed on the head slide rail 59, a fourth cylinder 61 is disposed on the scraper seat block 60, a piston rod of the fourth cylinder 61 is connected to a scraper connecting plate 62, a scraper guide rod 63 is slidably disposed on the scraper connecting plate 62, an upper end of the scraper guide rod 63 is connected to the scraper connecting plate 62, and a lower end is connected to a scraper 65, as can be seen from the above structure, the scraper seat block 60 moves back and forth on the head slide rail 59 in the transverse direction to drive the scraper 65 to move back and forth to perform ink scraping printing, and in addition, by extension and retraction of the piston rod of the fourth cylinder 61, the scraper connecting plate 62 can be driven to move up and down, so that the scraper guide rod 63 drives the scraper 65 to perform lifting adjustment, thereby being suitable for printing stocks with different thicknesses.

The discharging mechanism 4 includes a third conveying assembly 65, the third conveying assembly 65 is connected with the second conveying assembly, the machine table 1 is provided with a channel 102, the third conveying assembly is located above the channel 102, in the design, the third conveying assembly 65 is rotatably arranged on the machine table 1, the third conveying assembly 65 includes a bearing mounting seat 66 and a lifting plate 67, the bearing mounting seat 66 is connected on the machine table 1, the bearing mounting seat 66 is connected with a connecting shaft 68, the lifting plate 67 is connected with a fifth connecting plate 69, the fifth connecting plate 69 is connected with one end of a mounting plate 70, the other end of the mounting plate 70 is provided with a bearing (not shown), the mounting plate 70 is connected with the connecting shaft 68 through the bearing, in the design, as can be seen from fig. 17 and 18, a driving wheel in the third conveying assembly 65 is fixedly connected on the connecting shaft 68, the fifth connecting plate 69 is connected with a supporting frame, a driven wheel is rotatably connected on the supporting frame, the rotation of the coupling shaft 68 drives the driving wheel to rotate, so that the conveyer belt in the third conveyer assembly 65 moves for transportation, and the rotation of the coupling shaft 68 does not affect the mounting plate 70 because the mounting plate 70 is connected to the coupling shaft 68 through a bearing; the lower surface of the lifting plate 67 is connected with a cylinder head support 71, the cylinder head support 71 is connected with a cylinder head of a fifth cylinder 72, and when a piston rod in the fifth cylinder 72 is telescopic, the lifting plate 67 is driven to rotate by taking the connecting shaft 68 as a circle center; passageway 102's both sides are provided with shrouding 73, shrouding 73 can dismantle the connection on board 1, shrouding 73 can adopt joint formula or suspension type to connect on board 1, do not do the restriction this time, the intention of above-mentioned structure is, when the operation staff need go to the opposite side from one side of board 1, pull down shrouding 73 of one side, then make the piston rod stretch out in the fifth cylinder 72, thereby drive lifter plate 67 and third conveying component up toward turning up, thereby operating personnel can be through going to the opposite side of board 1 from passageway 102, need not to go to the opposite side around head end or the tail end side of board 1, and time is saved, and work efficiency is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims (10)

1. A screen printing machine is characterized by comprising a machine table, wherein a feeding mechanism, a screen printing mechanism and a discharging mechanism are sequentially arranged on the machine table according to the process steps; the pan feeding mechanism includes first conveying assembly, first conveying assembly is provided with locating component and first centre gripping subassembly, silk screen printing mechanism includes second conveying assembly, second conveying assembly department is provided with lift supporting component and second centre gripping subassembly, the top of lift supporting component is provided with the fixed subassembly of screen frame, the top of the fixed subassembly of screen frame is provided with the printing module.

2. The screen printing machine according to claim 1, wherein the first conveying assembly comprises a plurality of first conveying belts, a sensor and a first cylinder seat are arranged between the first conveying belts, the sensor and the first cylinder seat are arranged in a staggered manner with the first conveying belts, a first cylinder is arranged on the first cylinder seat, the first cylinder is hinged to one end of a connecting plate, the other end of the connecting plate is hinged to the middle of a stop lever, and the lower end of the stop lever is hinged to a piston rod of the first cylinder.

3. The screen printing machine according to claim 2, wherein the first clamping assemblies are positioned on the left side and the right side of the first conveying belt, the first clamping assemblies comprise a first connecting plate, a second connecting plate, a third connecting plate and a first guide rail, the upper end of the second connecting plate is connected with the first connecting plate, the lower end of the second connecting plate is connected with the third connecting plate, the first connecting plate and the third connecting plate are both arranged vertically to the second connecting plate, a plurality of centering catch wheels are rotatably arranged on the first connecting plate, the centering catch wheels are higher than the surface of the first conveying belt, the third connecting plate is slidably connected to the first guide rail, and a groove for moving the second connecting plate is reserved on the machine table; the device comprises a sixth connecting plate, wherein a sixth air cylinder is arranged on the sixth connecting plate, a piston rod of the sixth air cylinder is connected with a joint bearing, the joint bearing is connected onto the sixth connecting plate, and the sixth air cylinder is electrically connected with the inductor.

4. The screen printing machine according to claim 1, wherein the second conveying assembly comprises a plurality of second conveying belts, the second conveying belts are connected with the first conveying belts, the lifting support assembly comprises a horizontal bracket, the horizontal bracket is connected with a lifting component, a plurality of cutter supporting strips are arranged on the horizontal bracket, the lifting component comprises a first motor and a worm gear reducer, the first motor is connected with the worm gear reducer, the worm gear reducer is provided with a lifting crankshaft, the lifting crankshaft is connected with one end of a bellows connecting rod, the other end of the bellows connecting rod is connected with one end of a lifting pendulum block, the other end of the lifting pendulum block is connected with a lifting pendulum shaft, the two ends of the lifting pendulum shaft are rotatably connected to the machine platform and comprise a platform lifting clamp and a lifting support block, one end of the platform lifting clamp is connected and fixed to the lifting pendulum shaft, the other end of the lifting supporting block is hinged with the lower end of the lifting supporting block, and the upper end of the lifting supporting block is connected with the transverse bracket; the horizontal bracket is provided with a cutter supporting strip cross beam, a magnet is embedded in the cutter supporting strip cross beam, a fourth connecting plate made of magnetic substances is connected to the lower portion of the cutter supporting strip, and the fourth connecting plate is fixed to the magnet in an adsorption mode.

5. The screen printing machine according to claim 4, wherein the second clamping assembly comprises a left clamping member and a right clamping member, the left clamping member and the right clamping member are identical in structure and symmetrically located on two sides of the second conveyor belt, the left clamping member and the right clamping member comprise sliding plates, the sliding plates are slidably connected to the second guide rails, nuts are arranged on the sliding plates and are in threaded connection with screw rods, the end portions of the screw rods are connected with the second motor, supporting blocks are connected to the sliding plates, and supporting plates are arranged on one sides, close to the knife supporting strips, of the supporting blocks; the support block is connected with an angle iron plate, a second cylinder is arranged on the angle iron plate, and a piston rod of the second cylinder is connected with the support plate.

6. The screen printing machine according to claim 5, comprising a front positioning bearing and a lifting guide groove, wherein the front positioning bearing is rotatably connected to a brick blocking strip, the brick blocking strip is positioned beside the second conveying belt, one end of the brick blocking strip is hinged to a brick blocking strip supporting frame, the other end of the brick blocking strip is connected to a brick blocking strip connecting plate, the lower end of the brick blocking strip connecting plate is connected to a second cylinder block, and the second cylinder block is hinged to a piston rod of a third cylinder; the lift guide slot is connected on the horizontal bracket, the lift guide slot is located other, the direction that sets up of second conveyer belt with the transmission direction of second conveyer belt is the same, it is provided with the slide to slide on the lift guide slot, it is provided with back positioning bearing to rotate on the slide.

7. The screen printing machine according to claim 1, wherein the screen frame fixing assembly comprises a third guide rail, a first fixing mechanism and a second fixing mechanism are slidably disposed on the third guide rail, the first fixing mechanism and the second fixing mechanism are identical in structure and symmetrically arranged, the first fixing mechanism and the second fixing mechanism comprise a front screen frame, a screen mounting frame plate is connected above the front screen frame, and the screen mounting frame plate is slidably connected to the third guide rail; the first fixing mechanism and/or the second fixing mechanism are/is connected with a screw rod adjusting assembly; the screw rod adjusting assembly comprises an adjusting handle, a screen rod and an adjusting guide rod, the adjusting handle is connected with the screen rod, the screen rod is rotatably connected with the adjusting guide rod, the adjusting guide rod is fixedly connected to the adjusting pressing block, the third guide rail is connected with a connecting beam, and the screen rod is in threaded connection with the connecting beam; the adjustable silk screen rod adjusting device comprises an adjusting threaded sleeve, wherein one end of the adjusting threaded sleeve is rotatably connected with the adjusting guide rod, and the other end of the adjusting threaded sleeve is in threaded connection with the silk screen rod.

8. The screen printing machine according to any one of claims 1 to 7, wherein the printing assembly comprises a machine head slide rail, a scraper seat block is slidably disposed on the machine head slide rail, a fourth cylinder is disposed on the scraper seat block, a piston rod of the fourth cylinder is connected with a scraper connecting plate, a scraper guide rod is slidably disposed on the scraper connecting plate, an upper end of the scraper guide rod is connected with the scraper connecting plate, and a lower end of the scraper guide rod is connected with a scraper.

9. The screen printing machine according to claim 1, wherein the discharging mechanism comprises a third conveying assembly, the third conveying assembly is connected with the second conveying assembly, the machine table is provided with a channel, the third conveying assembly is located above the channel, the third conveying assembly comprises a bearing mounting seat and a lifting plate, the bearing mounting seat is connected to the machine table, a connecting shaft is connected to the bearing mounting seat, a fifth connecting plate is connected to the lifting plate and is connected with one end of a mounting plate, a bearing is arranged at the other end of the mounting plate, the bearing is connected to the connecting shaft, a cylinder head support is connected to the lower surface of the lifting plate, and the cylinder head support is connected with a cylinder head of a fifth cylinder.

10. The screen printing machine of claim 9, wherein sealing plates are arranged on two sides of the channel, and the sealing plates are detachably connected to the machine table.

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