CN210940945U

CN210940945U - Sheet material screen printing machine

Info

Publication number: CN210940945U
Application number: CN201920683889.6U
Authority: CN
Inventors: 谢武俊
Original assignee: Shenzhen Lingchuang Precision Machinery Co ltd
Current assignee: Shenzhen Lingchuang Precision Machinery Co ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-07-07
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses a sheet stock screen printing machine, which comprises a sheet stock bearing device, a feeding device, a printing device and a discharging device; the sheet material bearing device is arranged on one side of the printing device, the feeding device is arranged at the corresponding position of the sheet material bearing device, and the discharging device is arranged on the other side of the printing device; the feeding device comprises an adsorption conveying mechanism, a cleaning mechanism and a conveying driving mechanism; clean mechanism makes vertical motion's clean actuating mechanism including clean subassembly and drive clean subassembly, clean subassembly includes support, decontamination roller and cleaning roller all rotate the setting on the support, and the decontamination roller setting is in the below of cleaning roller, and the decontamination roller is tangent and contact the setting with the cleaning roller. The utility model discloses can carry out cleaning to the sheet stock before carrying out printing processing, detach sheet stock dust and other impurity on the surface, be favorable to improving the printing quality of sheet stock.

Description

Sheet material screen printing machine

Technical Field

The utility model relates to a screen printing equipment, concretely relates to sheet stock screen printing machine.

Background

In the printing process of the screen printing equipment, a printing material to be printed is conveyed to a printing table below a screen printing plate of the printing table, then a doctor blade moves downwards to press the screen printing plate, the pressing part of the screen printing plate is pressed on the printing material, then the doctor blade moves from one end of the screen printing plate to the other end of the screen printing plate, when ink on the screen printing plate is scraped to the other end of the screen printing plate, patterns on the screen printing plate are printed on the printing material through extrusion, so that printing processing is completed, and finally, the whole screen printing processing process can be completed through drying or other processing.

In the field of screen printing, the screen printing method generally comprises two raw material specifications of a sheet material and a coil material; for the screen printer taking the roll material as the processing raw material, the surface of the printing material released by the roll material can be cleaned by the cleaning roller in the process of conveying the roll material, so that the cleaning treatment is completed while conveying, and the dust and impurities on the surface of the roll material are cleaned, so that the printing quality is improved; however, in the screen printing machine using sheet materials as processing raw materials, the sheet materials to be processed are generally stacked on a carrying device, and the sheet materials are directly carried and transferred from the carrying device to a printing table by a carrying device during feeding, so that the sheet materials cannot be subjected to conventional cleaning treatment during feeding, and are easily affected by dust on the surface of the sheet materials during printing and processing, and the printing quality is reduced; therefore, there is a need for a sheet material screen printing machine capable of cleaning sheet materials.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's is not enough, provides a sheet stock screen printing machine, and this screen printing machine can carry out cleaning to the sheet stock before carrying out printing processing, detaches sheet stock dust and other impurity on the surface, is favorable to improving the printing quality of sheet stock.

The purpose of the utility model is realized through the following technical scheme:

a sheet stock screen printing machine is characterized by comprising a sheet stock bearing device, a feeding device, a printing device and a blanking device; the sheet material bearing device is arranged on one side of the printing device, the feeding device is arranged at the corresponding position of the sheet material bearing device, and the discharging device is arranged on the other side of the printing device; wherein the content of the first and second substances,

the sheet material bearing device comprises a storage table, wherein the sheet materials to be printed are stacked on the storage table; the feeding device comprises an adsorption carrying mechanism, a cleaning mechanism and a carrying driving mechanism for driving the adsorption carrying mechanism and the cleaning mechanism to move transversely; the adsorption carrying mechanism comprises a sucker and an adsorption driving mechanism for driving the sucker to move vertically, and the sucker is connected with a vacuum device; along the moving direction of the sheet materials, the cleaning mechanism is arranged in front of the adsorption conveying mechanism and comprises a cleaning assembly and a cleaning driving mechanism for driving the cleaning assembly to move vertically, the cleaning assembly comprises a support, a decontamination roller and a cleaning roller, the decontamination roller and the cleaning roller are both rotatably arranged on the support, the decontamination roller is arranged below the cleaning roller, and the decontamination roller is tangent to and in contact with the cleaning roller;

the printing device comprises a printing table and a wiping mechanism, wherein the wiping mechanism is arranged above the printing table;

the blanking device comprises a blanking moving plate, a blanking sucker assembly arranged on the blanking moving plate, a transverse carrying driving mechanism for driving the blanking moving plate to move transversely and a blanking driving mechanism for driving the blanking sucker assembly to move vertically; the blanking sucker assembly comprises a plurality of blanking suckers, and the plurality of blanking suckers are connected with a vacuum device.

The working principle of the sheet material screen printing machine is as follows:

the sheets to be printed are stacked one by one on the storage table to wait for conveyance by the conveyance mechanism.

At the moment, the suction driving mechanism drives the suction cup to move downwards and sucks up the sheet to be printed placed on the storage table under the action of the vacuum device, and then the suction driving mechanism drives the suction cup and the sucked sheet to move upwards and leave the storage table; then, the conveying driving mechanism drives the adsorption conveying mechanism and the cleaning mechanism to move forwards until the sucked sheet material moves above the printing table; next, the suction driving mechanism drives the suction disc to move downwards, and the sheet materials are loosened under the action of the vacuum device, so that the sheet materials are placed on the printing table; at the moment, the cleaning driving mechanism drives the cleaning assembly to move downwards, so that the lower decontamination roller is pressed on the sheet material, then the adsorption carrying mechanism and the cleaning mechanism return backwards and move under the driving of the carrying driving mechanism, and at the moment, the decontamination roller slides from the front side to the rear side of the sheet material all the time while the cleaning mechanism returns backwards and moves, so that the upper surface of the sheet material is decontaminated and cleaned; when the cleaning roller finishes cleaning the sheet stock positioned on the printing table and returns to the storage table, the cleaning driving mechanism drives the whole cleaning assembly to move upwards so as to avoid collision with the sheet stock on the storage table and wait for the return cleaning of the next sheet stock.

Then, a wiping mechanism of the printing device performs wiping printing processing on the sheet material on the printing table, and after the wiping printing processing is completed, the sheet material is carried away by a blanking mechanism and transferred to a subsequent collecting station or other processing devices.

The sheet stock bearing device of the utility model also comprises a transverse positioning mechanism and a longitudinal positioning mechanism; the transverse positioning mechanism comprises a transverse screw rod transmission mechanism and a transverse moving rod which is vertically arranged, the bottom of the transverse moving rod is fixedly arranged on a transverse nut of the transverse screw rod transmission mechanism, the transverse screw rod transmission mechanism is arranged below the storage table, a transverse groove for avoiding the transverse moving rod to move transversely is arranged on the storage table, and the top of the transverse moving rod penetrates through the transverse groove and is always positioned above the storage table; the longitudinal positioning mechanism comprises a longitudinal screw rod transmission mechanism, a front longitudinal moving rod and a rear longitudinal moving rod which are vertically arranged, a screw rod of the longitudinal screw rod transmission mechanism is composed of a bidirectional screw rod, a forward nut and a reverse nut are respectively arranged on a forward thread part and a reverse thread part of the bidirectional screw rod, the bottom of the front longitudinal moving rod is fixedly arranged on the forward nut, the bottom of the rear longitudinal moving rod is fixedly arranged on the reverse nut, a longitudinal groove for avoiding the front longitudinal moving rod and the rear longitudinal moving rod is arranged on the storage table, and the tops of the front longitudinal moving rod and the rear longitudinal moving rod penetrate through the longitudinal groove and are always positioned above the storage table; and a positioning assembly is arranged on one side of the storage table opposite to the transverse moving rod.

In a preferred scheme of the utility model, the printing device also comprises an anti-seepage device, and the anti-seepage device comprises a pad film and a pad film conveying mechanism arranged below the printing table; the cushion film conveying mechanism comprises a material discharging roll for releasing the cushion film, a material collecting roll for collecting waste materials and a rotation driving mechanism for driving the material collecting roll to rotate, and the material discharging roll and the material collecting roll are both rotatably connected to a rack below the printing table; the pad membrane on the blowing book is released from the blowing book, and after the upper surface of printing platform, retrieve to the receipts material and roll up, the top fixed connection of pad membrane is on the receipts material book.

Preferably, along the moving direction of the circuit board base material, a rear guide roller is arranged on the rear side of the printing table, and a front guide roller is arranged on the front side of the printing table; the pad film is released from the discharging roll, and is recovered into the collecting roll after sequentially passing through the rear guide roll, the printing table and the front guide roll.

The utility model discloses a preferred scheme, loading attachment's cleaning roller comprises the sticky dirt roller, is equipped with the multilayer on this sticky dirt roller and is used for the adhesion dust and other impurity's pasting membrane.

According to a preferred scheme of the utility model, the adsorption carrying mechanism of the feeding device further comprises a connecting frame and a moving frame, the moving frame is connected with a power output shaft of the carrying driving mechanism, and the adsorption driving mechanism is fixedly connected on the moving frame; the connecting frame is I-shaped, and the middle part of the connecting frame is connected with a power output shaft of the adsorption driving mechanism; and sucking discs are arranged at the two ends of the connecting frame.

The utility model discloses an optimal scheme, loading attachment's clean subassembly's support includes the main part board and sets up the connecting plate in main part board both sides, cleaning roller and decontamination roller pivoted both ends are all rotated on the connecting plate of connection, be equipped with the fixed plate of backward extension on the main part board, the fixed plate is connected with clean actuating mechanism's power take off.

In a preferred embodiment of the present invention, the sheet material carrying device further comprises a toothed chain transmission mechanism, and the toothed chain transmission mechanism is disposed outside the positioning assembly; the longitudinal screw rod of the longitudinal screw rod transmission mechanism is arranged in the middle of the lower part of the storage table; the chain gear is including rotating dwang, driving gear, driven gear and the driving chain of connection in the frame, the fixed rear end that sets up at the dwang of driving gear, driven gear is fixed to be set up the rear end of vertical lead screw, the driving chain encircles and sets up between driving gear and driven gear.

Preferably, a transverse hand wheel is arranged at the outer end part of a transverse screw rod of the transverse screw rod transmission mechanism, and the center of the transverse hand wheel is fixedly connected with the outer end part of the transverse screw rod; and a longitudinal hand wheel is arranged on the front end part of the rotating rod, and the center of the longitudinal hand wheel is fixedly connected with the front end part of the rotating rod.

The utility model discloses a preferred scheme, the sheet stock bears the device and still deposits the platform and do vertical movement's vertical actuating mechanism including being used for the drive, and this vertical actuating mechanism sets up in the below of depositing the platform, and vertical actuating mechanism's power output shaft is connected with the bottom of depositing the platform.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model discloses can carry out cleaning to the sheet stock before carrying out printing processing, detach sheet stock dust and other impurity on the surface, be favorable to improving the printing quality of sheet stock.

2. The utility model discloses can fix a position the sheet stock of stacking together and clap just for the neat of all sheet stocks is placed, improves the transport transfer precision of sheet stock, thereby improves printing quality.

Drawings

Fig. 1-4 are schematic structural views of one embodiment of the present invention, in which fig. 1 is a front view, fig. 2 is a left view, fig. 3 is a top view, and fig. 4 is a perspective view.

Fig. 5-6 are schematic structural views of the carrying device, wherein fig. 5 is a perspective view, and fig. 6 is a top view.

Fig. 7-9 are schematic structural views of the feeding device, the storage table and the printing table, wherein fig. 7 is a front view, fig. 8 is a top view, and fig. 9 is a perspective view.

Fig. 10-11 are schematic structural views of the feeding device, wherein fig. 10 is a side view, and fig. 11 is a perspective view.

Fig. 12 is a schematic view of the structure of the feeding device.

Fig. 13-14 are schematic views showing the construction of the permeation prevention apparatus, wherein fig. 13 is a front view and fig. 14 is a perspective view.

Detailed Description

The present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Referring to fig. 1 to 14, the sheet material screen printing machine of the present embodiment includes a sheet material carrying device a, a feeding device B, a printing device C, and a discharging device D; the sheet material bearing device A is arranged on one side of the printing device C, the feeding device B is arranged at the corresponding position of the sheet material bearing device A, and the discharging device D is arranged on the other side of the printing device C. Wherein:

referring to fig. 5 and 6, the sheet material carrying device a includes a storage table 22, a transverse positioning mechanism, and a longitudinal positioning mechanism; the transverse positioning mechanism comprises a transverse screw rod transmission mechanism and a transverse moving rod 25 which is vertically arranged, and the transverse screw rod power transmission mechanism comprises a transverse screw rod 1 and a transverse nut 5 which is arranged on the transverse screw rod 1; the bottom of the transverse moving rod 25 is fixedly arranged on a transverse nut 5 of a transmission mechanism of the transverse screw rod 1, the transmission mechanism of the transverse screw rod 1 is arranged below the storage table 22, a transverse groove 26 for avoiding the transverse moving rod 25 to move transversely is arranged on the storage table 22, and the top of the transverse moving rod 25 penetrates through the transverse groove 26 and is always positioned above the storage table 22; the longitudinal positioning mechanism comprises a longitudinal screw rod transmission mechanism, a front longitudinal moving rod 24 and a rear longitudinal moving rod 23 which are vertically arranged, and the longitudinal screw rod transmission mechanism comprises a longitudinal screw rod 10 and a longitudinal nut; the longitudinal screw rod 10 of the longitudinal screw rod transmission mechanism is composed of a bidirectional screw rod, the longitudinal nut comprises a forward nut 18 and a reverse nut 19, the forward thread part and the reverse thread part of the bidirectional screw rod are respectively provided with the forward nut 18 and the reverse nut 19, the bottom of the front longitudinal moving rod 24 is fixedly arranged on the forward nut 18, the bottom of the rear longitudinal moving rod 23 is fixedly arranged on the reverse nut 19, the storage table 22 is provided with a longitudinal groove 27 for avoiding the front longitudinal moving rod 24 and the rear longitudinal moving rod 23, and the tops of the front longitudinal moving rod 24 and the rear longitudinal moving rod 23 penetrate through the longitudinal groove 27 and are always positioned above the storage table 22; the storage table 22 is provided with a positioning assembly 20 on the side opposite to the traverse rod 25.

Referring to fig. 5 and 6, the sheet material carrying device a further comprises a toothed chain transmission mechanism which is arranged outside the positioning assembly 20; the longitudinal screw rod 10 of the longitudinal screw rod transmission mechanism is arranged in the middle of the lower part of the storage table 22; the toothed chain drive mechanism is including rotating dwang 12, driving gear 13, driven gear 9 and the driving chain 11 of connection in the frame, driving gear 13 is fixed to be set up in the rear end of dwang 12, driven gear 9 is fixed to be set up the rear end of vertical lead screw 10, driving chain 11 encircles the setting between driving gear 13 and driven gear 9. Thus, the rotation of the longitudinal screw rod 10 can be realized through the power transmission of the toothed chain transmission mechanism by rotating the rotating rod 12, so that the front longitudinal moving rod 24 and the rear longitudinal moving rod 23 can move to beat the sheet material; in addition, because the sheet material bearing material is the initial station of the whole screen printing machine, a plurality of control switches and other auxiliary parts are generally arranged at the initial station, the rotating rod 12 of the toothed chain transmission mechanism is arranged outside the positioning assembly 20, the control of the longitudinal screw rod 10 is realized through the rotating rod 12, the space can be saved, and the sheet material bearing material is better matched with other parts of the screen printing machine.

Referring to fig. 5 and 6, a transverse hand wheel 2 is arranged at the outer end of a transverse screw rod 11 of the transverse screw rod transmission mechanism, and the center of the transverse hand wheel 2 is fixedly connected with the outer end of a transverse screw rod 1; a longitudinal hand wheel 14 is arranged on the front end part of the rotating rod 12, and the center of the longitudinal hand wheel 14 is fixedly connected with the front end part of the rotating rod 12. Through the arrangement of the transverse hand wheel 2 and the longitudinal hand wheel 14, a worker can conveniently rotate the transverse screw rod 1 and the longitudinal screw rod 10, so that the positions of the transverse moving rod 25, the front longitudinal moving rod 24 and the rear longitudinal moving rod 23 can be adjusted, and the sheet materials can be rightly beaten.

Referring to fig. 5 and 6, the transverse moving rods 25 are two, and the storage table 22 has two transverse slots 26, which are arranged to match the two transverse moving rods 25. Through setting up two horizontal travel bars 25 for when promoting the sheet stock and realizing clapping, ensure that all sheet stocks can the parallel and level, be favorable to improving the regularity of sheet stock.

Referring to fig. 5 and 6, a transverse guide rod 3 is arranged below the storage table 22, the transverse guide rod is arranged on one side of the transverse screw rod 11, and a transverse sliding block 21 is arranged on the transverse guide rod 3; a transverse connecting plate 6 is connected between the transverse nut 5 and the transverse sliding block 21, and the two transverse moving rods 25 are arranged on the transverse connecting plate 6 in a flush manner. Through the arrangement of the transverse guide rod 3 and the transverse sliding block 21, the two transverse moving rods 25 can move simultaneously, and the moving precision and stability are improved.

Referring to fig. 5 and 6, the front longitudinal moving bar 24 and the rear longitudinal moving bar 23 each have six, and the storage table 22 has six longitudinal grooves 27. The six front longitudinal moving rods 24 and the six rear longitudinal moving rods 23 are arranged, so that all the sheet materials can be leveled, and the uniformity of the sheet materials can be improved; and the storage space of the sheet materials can be enlarged to adapt to more sheet materials with different sizes.

Referring to fig. 5 and 6, two longitudinal guide rods 7 are arranged below the storage table 22, the two longitudinal guide rods 7 are respectively arranged at two sides of the longitudinal screw 10, and a forward slide block 17 and a reverse slide block 8 are respectively arranged on the two longitudinal guide rods 7; a forward connecting plate 16 is arranged between the forward nut 18 and the two forward sliders 17 on the two longitudinal guide rods 7, a reverse connecting plate 15 is arranged between the reverse nut 19 and the two reverse sliders 8 on the two longitudinal guide rods 7, the six front longitudinal moving rods 24 are arranged on the forward connecting plate 16 at equal intervals, and the six rear longitudinal moving plates are arranged on the reverse connecting plate 15 at equal intervals. The arrangement of the longitudinal guide rods 7 is beneficial to improving the movement stability of the front longitudinal moving rod 24 and the rear longitudinal moving rod 23.

Referring to fig. 5 and 6, the sheet material carrying device a further includes a vertical driving mechanism for driving the storage table 22 to move vertically, the vertical driving mechanism is disposed below the storage table 22, and a power output shaft of the vertical driving mechanism is connected to the bottom of the storage table 22. The storage table 22 is driven by the vertical driving mechanism to move vertically, so that the sheet stock positioned at the topmost layer can be always positioned at a set position, the sheet stock can be conveyed by the conveying mechanism, and the conveying precision of the sheet stock is improved.

Referring to fig. 5 and 6, a connecting table 28 is arranged below the storage table 22, the transverse positioning mechanism and the longitudinal positioning mechanism are both arranged on the connecting table 28, the storage table 22 is fixedly connected with the connecting table 28, and a power output shaft of the vertical driving mechanism is fixedly connected with the connecting table; the arrangement of the transverse positioning mechanism and the longitudinal positioning mechanism is facilitated through the arrangement of the connecting table 28, and the connection with the vertical driving mechanism is facilitated. The vertical guide mechanism 4 is arranged between the connecting table 28 and the rack, which is beneficial to improving the stability of the vertical movement of the storage table 22. The vertical driving mechanism consists of a linear motor, a lead screw transmission mechanism or an electric push rod.

Referring to fig. 5 and 6, a detection sensor 28 for detecting the height of the sheet is arranged on the positioning assembly 20, and the detection sensor 28 is electrically connected with the vertical driving mechanism. The height of the sheet materials is detected through the arrangement of the detection sensor 28, and the height information of the sheet materials is transmitted to the vertical driving mechanism, so that the vertical driving control of the storage table of the sheet materials is realized, and the first sheet material is ensured to be positioned at the designated height before the transportation, so that the subsequent transportation transfer is realized. The detection sensor 28 is constituted by a photoelectric sensor.

Referring to fig. 5 and 6, the sheet material carrying device a of the present embodiment operates on the principle that:

the sheets to be printed are stacked on the storage table 22 one by one, at the same time, by rotating the transverse screw rod 1 of the transmission mechanism of the transverse screw rod 1, the transverse nut 5 moves towards the direction close to the positioning component 20, so that the transverse moving rod 25 moves forwards in the transverse groove 26, the stacked sheets are pushed towards one side of the positioning component 20 until being contacted with the positioning component 20, and the clamping of the sheets by the positioning component 20 and the transverse moving rod 25 is positive, so that the alignment of the sheets on the two sides is realized; then, by rotating the longitudinal screw 10 of the longitudinal screw transmission mechanism, the forward nut 18 and the reverse nut 19 move close to each other, namely, both move to the center of the storage table 22, so that the front longitudinal moving rod 24 and the rear longitudinal moving rod 23 push the protruded sheet materials to the center of the storage table 22, so as to realize the alignment of the two sides of the stacked sheet materials, and finally, all the sheet materials are neatly stacked on the storage table 22 to wait for the transportation of the transportation mechanism; in addition, when processing the sheet materials with different sizes, the rectangular space enclosed by the positioning assembly 20, the transverse moving rod 25, the front longitudinal moving rod 24 and the rear longitudinal moving rod 23 can be changed by adjusting the longitudinal screw rod 10 and the transverse screw rod 1, and the sheet materials with different sizes can be stacked.

The feeding device B comprises an adsorption conveying mechanism 2B, a cleaning mechanism 3B and a conveying driving mechanism 1B for driving the adsorption conveying mechanism 2B and the cleaning mechanism 3B to move between the storage table 22 and the printing table 4 simultaneously; the adsorption conveying mechanism 2b comprises a sucker 8b and an adsorption driving mechanism 7b for driving the sucker 8b to move vertically, and the sucker 8b is connected with a vacuum device; the cleaning mechanism 3b is arranged in front of the adsorption conveying mechanism 2 along the moving direction of the sheet materials, the cleaning mechanism 3b comprises a cleaning assembly and a cleaning driving mechanism 14b for driving the cleaning assembly to move vertically, the cleaning assembly comprises a bracket, a decontamination roller 10b and a cleaning roller 9b, the decontamination roller 10b and the cleaning roller 9b are both rotatably arranged on the bracket, the decontamination roller 10b is arranged below the cleaning roller 9b, and the decontamination roller 10b is tangent to and in contact with the cleaning roller 9 b.

Referring to fig. 7 to 12, the cleaning roller 9b is composed of a dust-sticking roller provided with a plurality of sticking films for sticking dust and other foreign substances. When more dust is stuck on the cleaning roller 9b, the cleaning roller 10b can be kept clean by directly tearing off the sticking film on the surface, so that the cleaning quality of the sheet material can be ensured.

Referring to fig. 7-12, the adsorption conveying mechanism 2b further includes a connecting frame 15b and a moving frame 6b, the moving frame 6b is connected to the power output shaft of the conveying driving mechanism 1b, and the adsorption driving mechanism 7 is fixedly connected to the moving frame 6 b; the connecting frame 15b is I-shaped, and the middle part of the connecting frame 15b is connected with a power output shaft of the adsorption driving mechanism 7 b; and two ends of the connecting frame 15b are provided with suckers 8 b. By arranging the adsorption conveying mechanism 2b, the up-and-down movement and the front-and-back movement of the sucker 8b are realized, so that the sheet materials are conveyed; in addition, the suction cups 8b are provided at both ends of the connecting frame 15b, so that the sheet can be better sucked, and the sheet can be smoothly conveyed.

Referring to fig. 7 to 12, there are two sets of three suction cups 8b, and the suction cups 8b of each set are respectively disposed at both ends of the connecting frame 15 b.

Referring to fig. 7-11, each suction cup 8b is connected to the connecting frame 15b through an adjusting plate 16b, and the adjusting plate 16b is provided with an oblong adjusting hole 17 b. By the arrangement of the adjustment plate 16b, the position of each suction cup 8b can be adjusted, which is advantageous in that each suction cup 8b is arranged at an optimum position for better suction of the sheet.

Referring to fig. 7 to 12, the adsorption driving mechanism 7b is composed of a first cylinder, a cylinder body of which is fixedly connected to the moving frame 6b through a connecting member, and a telescopic member of which is connected to a middle portion of the connecting frame 15 b.

Referring to fig. 7 to 12, the carrying driving mechanism 1b is composed of a motor and a screw rod transmission mechanism, a screw rod of the screw rod transmission mechanism is connected with a power shaft of the motor, and a screw rod nut of the screw rod transmission mechanism is fixedly connected with the movable frame 6 b. The sheet stock is conveyed and moved by adopting the lead screw transmission mechanism and the motor, the precision is high, and the position precision of the sheet stock is favorably improved, so that the printing precision is improved.

Referring to fig. 7-12, the bracket of the cleaning assembly includes a main body plate 13b and connecting plates 11b arranged on both sides of the main body plate 13b, the cleaning roller 9b and the cleaning roller 10b are rotatably connected on the connecting plates 11b, a fixing plate 12b extending backwards is arranged on the main body plate 13b, and the fixing plate 12b is connected with a power output shaft of a cleaning driving mechanism 14 b. Such a bracket is provided to facilitate the provision of the cleaning drive mechanism 14 b.

Referring to fig. 7 to 12, the cleaning driving mechanism 14b is composed of a second cylinder, the cylinder body of which is fixedly connected with the movable frame 6b through a joint plate, and the telescopic shaft of which is connected with the fixed plate 12 b.

Referring to fig. 7 to 12, the working principle of the feeding device B of the present embodiment is as follows:

in operation, the suction driving mechanism 7b drives the suction cup 8b to move downwards and suck up the sheet to be printed placed on the storage table 22 of the carrying device under the action of the vacuum device, and then the suction driving mechanism 7b drives the suction cup 8b and the sucked sheet to move upwards to leave the storage table 22; subsequently, the conveyance drive mechanism 1b drives the suction conveyance mechanism 2b and the cleaning mechanism 3b to move forward until the sucked sheet moves above the printing table 4; next, the suction driving mechanism 7b drives the suction cup 8b to move downward and releases the sheet under the action of the vacuum device, so that the sheet is placed on the printing table 4; at this time, the cleaning driving mechanism 14b drives the cleaning assembly to move downwards, so that the lower decontamination roller 10b is pressed on the sheet material, then the adsorption conveying mechanism 2b and the cleaning mechanism 3b move backwards and backwards under the driving of the conveying driving mechanism 1, at this time, the decontamination roller 10b slides from the front side of the sheet material to the rear side all the way while the cleaning mechanism 3 moves backwards and backwards, so as to realize the decontamination cleaning of the upper surface of the sheet material, and meanwhile, when the decontamination roller 10b rolls on the upper surface of the sheet material for cleaning, the cleaning roller 9b which is tangent to and in contact with the decontamination roller 10b also rolls, and cleans impurities and dust on the surface of the decontamination roller 10b, so as to ensure the cleanliness of the decontamination roller 10b, and further improve the cleaning effect of the decontamination roller 10b on the sheet material; when the cleaning roller 10b finishes cleaning the sheet located at the printing station 4 and returns to the storage station 22, the cleaning driving mechanism 14b drives the entire cleaning assembly to move upward, avoiding collision with the sheet on the storage station 22, waiting for the return cleaning of the next sheet.

The printing apparatus C includes a printing table 4 and a wiping mechanism provided above the printing table 4. The printing device C of the present embodiment can be referred to in the utility model patent "screen printer" with the publication number CN207388566U or other related prior art documents.

Referring to fig. 13 to 14, the permeation prevention apparatus E of the present embodiment includes a pad film, and a pad film conveying mechanism disposed below the printing table 4; the cushion film conveying mechanism comprises a material discharging roll 1c for releasing the cushion film 3c, a material receiving roll 2c for winding waste materials and a rotation driving mechanism for driving the material receiving roll 2c to rotate, and the material discharging roll 1c and the material receiving roll 2c are both rotatably connected to a rack below the printing table 4; the pad film 3c on the stock roll 1c is released from the stock roll 1c, passes over the upper surface of the printing table 4, and is collected on the stock roll 2c, and the leading end of the pad film 3c is fixedly connected to the stock roll 2 c.

Referring to fig. 13-14, along the moving direction of the circuit board substrate, the rear side of the printing table 4c is provided with a rear guide roller 5c, and the front side of the printing table 4c is provided with a front guide roller 6 c; the backing film 3c is discharged from the supply roll 1c, passes through the rear guide roller 5c, the printing table 4, and the front guide roller 6c in this order, and is collected in the collection roll 2 c. Through the arrangement of the front guide roller 6c and the rear guide roller 5c, the pad film 3 can be conveyed better, and the updating after the printing processing of the previous circuit board substrate is finished is facilitated.

The top surface of the front guide roller 6c, the top surface of the rear guide roller 5c, and the upper surface of the printing table 4 are located at the same height. This further facilitates the transfer of the underlay film and ensures that the underlay film is laid flat on the printing table 4.

Referring to fig. 13 to 14, the stock roll 2c is disposed in front of the stock roll 1c in the moving direction of the circuit board base material. Therefore, the moving direction of the pad film 3c is consistent with that of the circuit board base material, interference between the movement of the circuit board base material and the movement of the pad film 3c is avoided, and smooth conveying of the pad film 3c is ensured.

Referring to fig. 13 to 14, a damping device is attached to the discharge roll 1 c. Through the setting of damping device, can avoid the material roll of unreeling 1c to continue to rotate along with inertia after accomplishing release pad membrane 3c and fill up membrane 3c, ensure to fill up membrane 3c and can take up the taut setting at the upper surface of printing platform 4.

Referring to fig. 13 to 14, the rotation driving mechanism is composed of a motor and a toothed chain transmission mechanism, the motor is fixedly arranged on the rack, the toothed chain transmission mechanism includes a driving gear, a driven gear and a transmission chain, the driving gear is connected with a power shaft of the motor, the driven gear is connected with an end portion of a rotation shaft of the material receiving roll 2c, and the transmission chain is arranged between the driving gear and the driven gear in a surrounding manner. The rotation of the material collecting coil 2c is realized through the motor and the gear chain transmission mechanism, and the structure is simple.

Referring to fig. 13 to 14, the anti-infiltration apparatus E of the present embodiment operates on the following principle:

before the circuit board base material sheet to be processed is conveyed to the printing table 4 to be printed, the rotation driving mechanism drives the material receiving roll 2c to rotate, so that the material discharging roll 1c is pulled to rotate to release the pad film 3c, the clean pad film 3c covers the upper surface of the printing table 4, then the circuit board base material sheet to be processed is conveyed to the printing table 4, the bottom of the circuit board is separated from the printing table 4 and is padded with the pad film 3c, and during printing processing, the permeated ink remains on the pad film 3c and cannot be directly attached to the printing table 4; after the printed circuit board substrate sheet is processed and conveyed away from the printing table 4, the rotation driving mechanism drives the material receiving roll 2c to rotate and pulls the material discharging roll 1c to rotate, so that the polluted padding film 3 on the printing table 4 is recovered on the material receiving roll 2c, the material discharging roll 1c continuously releases the clean padding film 3c again and moves to the upper surface of the printing table 4 to wait for the printed processing of the next circuit board substrate sheet, and the like, and the clean padding film 3c is padded on the upper surface of the printing table 4 before each circuit board substrate is conveyed to the printing table 4. Because the pad film 3c is arranged between the circuit board base material sheet and the printing table 4 during printing processing, and the pad film 3c which is cleaned up is updated on the printing table 4 before each circuit board base material sheet is printed, the bottom of each circuit board base material sheet is prevented from being polluted by residual ink before processing, the residual ink is prevented from being communicated with other unrelated circuits on the bottom surface of the circuit board base material sheet, the flatness of the printing table 4 can be ensured, and the printing quality of the circuit board base material sheet is improved. Through the arrangement of the anti-seepage device E, the sheet stock screen printing machine of the embodiment has better quality and good adaptability when printing processing is carried out on the circuit board base material sheet stocks.

The blanking device D comprises a blanking moving plate, a blanking sucker assembly arranged on the blanking moving plate, a transverse carrying driving mechanism for driving the blanking moving plate to transversely move and a blanking driving mechanism for driving the blanking sucker assembly to vertically move; the blanking sucker assembly comprises a plurality of blanking suckers, and the plurality of blanking suckers are connected with a vacuum device. The specific implementation of the blanking device D can be referred to as the loading device B in this embodiment.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A sheet stock screen printing machine is characterized by comprising a sheet stock bearing device, a feeding device, a printing device and a blanking device; the sheet material bearing device is arranged on one side of the printing device, the feeding device is arranged at the corresponding position of the sheet material bearing device, and the discharging device is arranged on the other side of the printing device; wherein the content of the first and second substances,

2. The sheet material screen printing machine according to claim 1, wherein the sheet material carrier further comprises a transverse positioning mechanism and a longitudinal positioning mechanism; the transverse positioning mechanism comprises a transverse screw rod transmission mechanism and a transverse moving rod which is vertically arranged, the bottom of the transverse moving rod is fixedly arranged on a transverse nut of the transverse screw rod transmission mechanism, the transverse screw rod transmission mechanism is arranged below the storage table, a transverse groove for avoiding the transverse moving rod to move transversely is arranged on the storage table, and the top of the transverse moving rod penetrates through the transverse groove and is always positioned above the storage table; the longitudinal positioning mechanism comprises a longitudinal screw rod transmission mechanism, a front longitudinal moving rod and a rear longitudinal moving rod which are vertically arranged, a screw rod of the longitudinal screw rod transmission mechanism is composed of a bidirectional screw rod, a forward nut and a reverse nut are respectively arranged on a forward thread part and a reverse thread part of the bidirectional screw rod, the bottom of the front longitudinal moving rod is fixedly arranged on the forward nut, the bottom of the rear longitudinal moving rod is fixedly arranged on the reverse nut, a longitudinal groove for avoiding the front longitudinal moving rod and the rear longitudinal moving rod is arranged on the storage table, and the tops of the front longitudinal moving rod and the rear longitudinal moving rod penetrate through the longitudinal groove and are always positioned above the storage table; and a positioning assembly is arranged on one side of the storage table opposite to the transverse moving rod.

3. The sheet fed screen printing machine of claim 1, wherein the printing device further comprises an anti-infiltration device comprising a blanket and a blanket conveying mechanism disposed below the printing station; the cushion film conveying mechanism comprises a material discharging roll for releasing the cushion film, a material collecting roll for collecting waste materials and a rotation driving mechanism for driving the material collecting roll to rotate, and the material discharging roll and the material collecting roll are both rotatably connected to a rack below the printing table; the pad membrane on the blowing book is released from the blowing book, and after the upper surface of printing platform, retrieve to the receipts material and roll up, the top fixed connection of pad membrane is on the receipts material book.

4. The sheet fed screen printing machine of claim 3, wherein, in the direction of movement of the circuit board substrate, the rear side of the printing table is provided with a rear guide roller and the front side of the printing table is provided with a front guide roller; the pad film is released from the discharging roll, and is recovered into the collecting roll after sequentially passing through the rear guide roll, the printing table and the front guide roll.

5. The sheet-fed screen printing machine of claim 1, wherein the cleaning roller of the feeding device is constituted by a dust-binding roller provided with a plurality of layers of adhesive films for adhering dust and foreign matter.

6. The sheet material screen printing machine as recited in claim 1, wherein the adsorption carrying mechanism of the feeding device further includes a connecting frame and a moving frame, the moving frame is connected with a power output shaft of a carrying driving mechanism, and the adsorption driving mechanism is fixedly connected to the moving frame; the connecting frame is I-shaped, and the middle part of the connecting frame is connected with a power output shaft of the adsorption driving mechanism; and sucking discs are arranged at the two ends of the connecting frame.

7. The sheet material screen printing machine according to claim 1, wherein the bracket of the cleaning assembly of the feeding device comprises a main body plate and connecting plates arranged on two sides of the main body plate, the cleaning roller and the cleaning roller are rotatably connected on the connecting plates at two rotating ends, a fixing plate extending backwards is arranged on the main body plate, and the fixing plate is connected with a power output shaft of the cleaning driving mechanism.

8. The sheet stock screen printing machine of claim 2, wherein the sheet stock carrier further comprises a toothed chain drive mechanism disposed outside the positioning assembly; the longitudinal screw rod of the longitudinal screw rod transmission mechanism is arranged in the middle of the lower part of the storage table; the chain gear is including rotating dwang, driving gear, driven gear and the driving chain of connection in the frame, the fixed rear end that sets up at the dwang of driving gear, driven gear is fixed to be set up the rear end of vertical lead screw, the driving chain encircles and sets up between driving gear and driven gear.

9. The sheet material screen printing machine as claimed in claim 8, wherein a transverse hand wheel is arranged on the outer end portion of the transverse screw rod transmission mechanism, and the center of the transverse hand wheel is fixedly connected with the outer end portion of the transverse screw rod; and a longitudinal hand wheel is arranged on the front end part of the rotating rod, and the center of the longitudinal hand wheel is fixedly connected with the front end part of the rotating rod.

10. The sheet stock screen printing machine of claim 2, wherein the sheet stock carrier further comprises a vertical driving mechanism for driving the storage table to move vertically, the vertical driving mechanism being disposed below the storage table, and a power output shaft of the vertical driving mechanism being connected to a bottom of the storage table.