CN219214411U

CN219214411U - Printing unit

Info

Publication number: CN219214411U
Application number: CN202223550349.1U
Authority: CN
Inventors: 税刚; 李益; 常建平
Original assignee: Sichuan De Ai Xinma Machinery Co ltd
Current assignee: Sichuan De Ai Xinma Machinery Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-20
Anticipated expiration: 2032-12-29

Abstract

The utility model provides a printing unit which comprises a print head seat, a first sliding plate, a second sliding plate, a lifting cylinder and a main lifting mechanism, wherein the first sliding plate and the second sliding plate are arranged on the print head seat in a sliding manner along the vertical direction, and the first sliding plate is positioned above the second sliding plate; the two ends of the lifting cylinder are respectively connected with the first sliding plate and the second sliding plate; the main lifting mechanism is used for driving the second sliding plate to move on the print head seat; the first sliding plate is provided with a movable scraper; the second sliding plate is provided with a movable net frame. The screen printer fixing module solves the problems that a traditional screen printer fixing module is high in cost, poor in structural rigidity and sensitivity, high in reliability and high in moving speed and the like.

Description

Printing unit

Technical Field

The utility model relates to the technical field of printing, in particular to a printing unit.

Background

A screen printer is a machine that applies printing with a screen scraper, and belongs to one type of printer. Screen printers are machines that print text and images, and are a generic term for machines or equipment used to produce printed matter. The silk screen scraper must be fixed on the scraper device in the silk screen printing machine, and in the printing process, book uncovering type lifting or horizontal lifting is realized.

The traditional screen printer adopts a fixed module for the screen plate and the scraper, has high cost and poor structural rigidity, and simultaneously the scraper adopts an air cylinder to control the upper and lower work (pneumatic scraper), so that compared with an electric scraper, the screen plate and the scraper have the problems of high sensitivity, reliability, high movement speed and the like.

Disclosure of Invention

The utility model aims to provide a printing unit which solves the problems of high cost, poor sensitivity of structural rigidity, high reliability, high movement speed and the like of the traditional screen printer fixing module.

The embodiment of the utility model is realized by the following technical scheme: the printing unit comprises a print head seat, a first sliding plate, a second sliding plate, a lifting cylinder and a main lifting mechanism, wherein the first sliding plate and the second sliding plate are arranged on the print head seat in a sliding manner along the vertical direction, and the first sliding plate is positioned above the second sliding plate;

the two ends of the lifting cylinder are respectively connected with the first sliding plate and the second sliding plate; the main lifting mechanism is used for driving the second sliding plate to move on the print head seat;

the first sliding plate is provided with a movable scraper; the second sliding plate is provided with a movable net frame.

Further, the main lifting mechanism comprises a first mounting seat, a first ball screw, a nut sleeve and a first driving piece, wherein the first mounting seat is horizontally erected at the top of the print head seat, the first driving piece and the first ball screw are vertically arranged at two ends of the first mounting seat respectively, a screw rod of the first ball screw is rotationally connected with the first mounting seat, a nut of the first ball screw is coaxially connected with the nut sleeve, and one end of the nut sleeve, which is far away from the first mounting seat, is fixedly connected with the second sliding plate; the first driving piece is in transmission connection with the screw rod.

The net arm translation mechanism comprises a second ball screw, a second driving piece, a net arm sliding block, a net arm beam and two second linear guide rails;

the second ball screw and the two second linear guide rails are horizontally arranged on the second sliding plate, and the second driving piece is in transmission connection with the screw of the second ball screw; the two second linear guide rails are symmetrically arranged on the upper side and the lower side of the second ball screw; the middle part of the net arm sliding block is fixedly connected with the nut of the second ball screw, and the upper end and the lower end of the net arm sliding block are respectively connected with the two second linear guide rails in a sliding way; the net arm cross beam is arranged on the net arm sliding block, the net arm cross beam is parallel to the second ball screw, and the net frame is arranged on the net arm cross beam in a telescopic mode.

Further, the electric clamping arms are symmetrically arranged, one end of each electric clamping arm is connected with the net arm beam in a sliding manner, each electric clamping arm is fixed with the net arm beam through a fixing piece, and the electric clamping arms are perpendicular to the plate surface of the second sliding plate; the two electric clamping arms clamp the net frame;

the electric clamping arm comprises a connecting seat, a spreading arm, a third driving piece and a third ball screw, wherein the connecting seat is in sliding connection with the net arm cross beam, the third ball screw is vertically arranged on the connecting seat, the third driving piece is in transmission connection with a nut of the third ball screw through a sleeve, the nut of the third ball screw is in rotary connection with the connecting seat, the spreading arm is arranged on the connecting seat in a sliding manner along the vertical direction, one end, far away from the third driving piece, of the screw of the third ball screw is fixedly connected with the spreading arm, and the spreading arm is vertical to the second sliding plate;

the device also comprises a fourth driving piece, a fourth ball screw and a leveling seat, wherein the leveling seat is arranged on the unfolding arm in a sliding manner, and the leveling seat is connected with the screen frame; the fourth ball screw is arranged along the expanding arm, the fourth driving piece is in transmission connection with the screw rod of the fourth ball screw, and the screw rod of the fourth ball screw is in threaded connection with the leveling seat.

Further, the leveling seat comprises a positioning screw, a U-shaped sliding seat and two adjusting screws, wherein the U-shaped sliding seat is provided with an opening downwards, and the positioning screw is connected with two side walls of the U-shaped sliding seat; the extending arm is horizontally provided with a long sliding hole in a penetrating mode, the positioning screw is arranged in the long sliding hole in a sliding mode, and the screw rod of the fourth ball screw is in threaded connection with the positioning screw;

the U-shaped sliding seat comprises two L-shaped connecting pieces, the two L-shaped connecting pieces are symmetrically arranged relative to the expanding arm, right-angle edges of the two L-shaped connecting pieces are partially overlapped, one end of the positioning screw is vertically connected with the inner wall of one L-shaped connecting piece, and the other end of the positioning screw penetrates out of the other L-shaped connecting piece and is in threaded connection with an adjusting nut; one L-shaped connecting piece is connected with the net frame;

the two adjusting screws are vertically arranged at the overlapping parts of the two L-shaped connecting pieces, the two adjusting screws are in threaded connection with the L-shaped connecting piece positioned at the top and are abutted with the other L-shaped connecting piece, and the two adjusting screws are distributed at the two sides of the positioning screw along the sliding direction of the U-shaped sliding seat.

Further, the scraper moving assembly comprises a first mounting plate, a fifth driving piece, a fifth ball screw and two third linear guide rails, wherein the first mounting plate is horizontally arranged on the first sliding plate, the fifth ball screw and the two third linear guide rails are mutually parallel and arranged at the bottom of the first mounting plate, the fifth ball screw is positioned between the two third linear guide rails, and the third linear guide rails are parallel to the first sliding plate;

the device comprises a first mounting plate, a first linear guide rail, a second linear guide rail, a scraper slide seat and a first adjusting screw, wherein one end of the first mounting plate is simultaneously connected with the first linear guide rail in a sliding way; the scraper slide is arranged on the fourth linear guide rail in a sliding mode, one end of the first adjusting screw is rotationally connected with the second mounting plate, and the other end of the first adjusting screw is in threaded connection with the scraper slide.

Further, still include second mount pad, third mount pad, gas spring, cam link mechanism, actuating lever and sixth driving piece, the second mount pad is in along vertical direction slip setting is in scraper slide bottom, the gas spring sets up downwards the second mount pad bottom, the actuating lever is in along vertical direction slip setting is in on the second mount pad, cam link mechanism is used for driving the actuating lever reciprocates, sixth driving piece with cam link mechanism's cam transmission is connected, the lower extreme of actuating lever with gas spring's piston rod all with third mount pad is connected, third mount pad bottom activity is provided with the scraper.

Further, the scraper fixing device further comprises a scraper adjusting seat, a trapezoidal guide rail, a first fixing bolt, a second fixing bolt, a scraper mounting seat and a third fixing bolt, wherein the trapezoidal guide rail is fixedly arranged at the bottom of the third mounting seat, and the trapezoidal guide rail is parallel to the third linear guide rail;

the scraper adjusting seat is arranged on the trapezoid guide rail in a sliding manner, and the first fixing bolt is used for fixing the scraper adjusting seat and the trapezoid guide rail; the bottom of the scraper adjusting seat is provided with a first U-shaped clamping connector with a downward opening, the second fixing bolt penetrates through one side wall of the first U-shaped clamping connector and is in threaded connection with the other side wall of the first U-shaped clamping connector, and the part of the second fixing bolt, which is positioned in the groove of the first U-shaped clamping connector, is rotationally connected with an angle adjusting plate;

the top of the scraper mounting seat is provided with a second U-shaped clamping connector with an upward opening, the third fixing bolt penetrates through one side wall of the second U-shaped clamping connector and is in threaded connection with the other side wall of the second U-shaped clamping connector, the angle adjusting plate is in rotary connection with the part, located in the groove of the second U-shaped clamping connector, of the third fixing bolt, and the third fixing bolt is mutually perpendicular to the second fixing bolt; the scraper is detachably connected with the scraper mounting seat.

Further, the scraper slide seat is rotatably provided with a second adjusting screw, the second adjusting screw is vertically arranged, and the lower end of the second adjusting screw is in threaded connection with the second installation seat.

Further, the first driving piece, the second driving piece, the third driving piece, the fourth driving piece, the fifth driving piece and the sixth driving piece are all servo motors.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

1. the net frame and the scraper are controlled by the ball screw and the linear guide rail, so that the motion resistance is small, the structural rigidity is good, and meanwhile, the scraper and the net frame are controlled by the servo motor to move, so that the self-adaptive printing in a certain space is completed, and the self-adaptive printing device is high in sensitivity, high in reliability and high in motion speed.

2. The driving rod is driven by the servo motor and the cam connecting rod mechanism, when the driving rod moves to the lowest end, the force of the scraper and the screen frame in abutting connection can be enhanced by matching with the gas spring, and a better scraping effect is achieved

3. Through rotatory second adjusting screw, adjust scraper slide and second mount pad's position, and then control the vertical height of scraper, cooperate the cam connecting rod again, realize the accurate control of scraper height position.

4. The first sliding plate is connected with the second sliding plate through the air cylinder, and then the distance between the first sliding plate and the second sliding plate is controlled through the air cylinder, so that the scraper is convenient to replace and the maintenance of the parts connected with the scraper is convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a printing unit according to the present disclosure;

FIG. 2 is an assembly view of a translation mechanism for a web arm and an electric gripper arm in a printing unit according to the present utility model;

FIG. 3 is a diagram showing the assembly of an electric gripper arm and a U-shaped slider in a printing unit according to the present utility model;

FIG. 4 is an assembly view of a doctor blade moving assembly in a printing unit according to the present utility model;

FIG. 5 is an enlarged schematic view of FIG. 4A;

icon: 1. a head holder, 2, a first slide plate, 3, a second slide plate, 4, a lifting cylinder, 5, a main lifting mechanism, 51, a first mount, 52, a first ball screw, 53, a nut sleeve, 54, a first driving member, 6, a doctor blade, 7, a net frame, 8, a net arm translation mechanism, 81, a second ball screw, 83, a second driving member, 84, a net arm slider, 85, a net arm beam, 86, a second linear guide rail, 9, an electric clamp arm, 91, a connection holder, 92, a spreading arm, 921, a long slide hole, 93, a third driving member, 94, a third ball screw, 95, a fourth driving member, 96, a fourth ball screw, 97, a leveling holder, 971, a set screw, 972, a U-shaped slide, 9721, an L-shaped connecting member, 973, an adjusting screw, 974, an adjusting screw, 10, fixing parts, 11, scraper moving assemblies, 111, first mounting plates, 112, fifth driving parts, 113, fifth ball screws, 114, third linear guide rails, 115, second mounting plates, 116, fourth linear guide rails, 117, scraper sliding seats, 118, first adjusting screws, 119, second mounting seats, 120, third mounting seats, 121, gas springs, 122, cam link mechanisms, 123, driving rods, 124, sixth driving parts, 13, scraper adjusting seats, 131, trapezoid guide rails, 132, first fixing bolts, 133, second fixing bolts, 134, scraper mounting seats, 135, third fixing bolts, 136, first U-shaped clamping joints, 137, angle adjusting plates, 138, second U-shaped clamping joints, 14 and second adjusting screws.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, the present embodiment provides a printing unit including a head holder 1, a first slide plate 2, a second slide plate 3, a lifting cylinder 4, and a main lifting mechanism 5, the first slide plate 2 and the second slide plate 3 being both slidably disposed on a panel on the front side of the head holder 1 in the vertical direction, the first slide plate 2 being located above the second slide plate 3;

two ends of the lifting cylinder 4 are respectively connected with the first sliding plate 2 and the second sliding plate 3; the main lifting mechanism 5 is used for driving the second sliding plate 3 to move on the printing head seat 1, and indirectly controlling the height of the screen frame 7 by directly controlling the height of the second sliding plate 3, so as to greatly control the height of the screen frame 7, and aim at the to-be-printed parts with different sizes; meanwhile, the first sliding plate 2 and the second sliding plate 3 are connected through the air cylinder 4, and the distance between the first sliding plate 2 and the second sliding plate 3 is controlled through the air cylinder 4, so that the scraper 6 is convenient to replace and the parts connected with the scraper are convenient to maintain.

In the implementation, a movable scraper 6 is arranged on the first sliding plate 2, and the scraper 6 can move back and forth, left and right and up and down on the first sliding plate 2; meanwhile, the second sliding plate 3 is provided with a movable screen frame 7, and the screen frame 7 is horizontally arranged and can move back and forth, left and right and up and down like a scraper. When the piece to be printed enters a preset position at the bottom of the screen frame 7, the screen frame 7 is controlled to move downwards until the bottom of the screen frame 7 is abutted against the piece to be printed, and when the printing part of the piece to be printed is a plane, the printing ink is scraped and coated at the corresponding position by the scraper 6; when the printing part of the piece to be printed is a curved surface, the translational screen frame 7 needs to be matched, the piece to be printed is driven to rotate, the screen frame 7 moves downwards, the screen frame 7 is covered on the piece to be printed to a large extent, at the moment, the screen part can arch slightly, and the coating is completed by being matched with the scraper 7 to be used for coating. Finally, the screen frame 7 is separated from the tape printing.

As shown in fig. 1, the main lifting mechanism 5 includes a first mounting seat 51, a first ball screw 52, a nut sleeve 53 and a first driving member 54, wherein the first mounting seat 51 is horizontally erected on the top of the print head seat 1 and extends out of the print head seat 1, the first driving member 54 and the first ball screw 52 are vertically arranged at two ends of the first mounting seat 51 respectively, a screw rod of the first ball screw 52 is rotationally connected with the first mounting seat 51 and penetrates through the first mounting seat 51, a nut of the first ball screw 52 is coaxially connected with the nut sleeve 53, the screw rod can move in the nut sleeve 53, and one end of the nut sleeve 53 far away from the first mounting seat 51 is fixedly connected with the second sliding plate 3; the first driving member 54 is in driving connection with the screw through a belt pulley, and then drives the nut sleeve 53 to move up and down in the forward and reverse rotation process of the screw.

As shown in fig. 2, the net arm translation mechanism 8 further comprises a second ball screw 81, a second driving piece 83, a net arm sliding block 84, a net arm beam 85 and two second linear guide rails 86;

the second ball screw 81 and the two second linear guide rails 86 are horizontally arranged on the second sliding plate 3, and the second driving piece 83 is in transmission connection with the screw of the second ball screw 81 through a belt pulley; the two second linear guide rails 86 are symmetrically arranged on the upper side and the lower side of the second ball screw 81; the middle part of the net arm sliding block 84 is fixedly connected with a nut of the second ball screw 81, the upper end and the lower end of the net arm sliding block 84 are respectively in sliding connection with two second linear guide rails 86, the two second linear guide rails 86 are positioned on two sides of the second ball screw 81 and used for balancing lever force of the net frame 7 and the electric clamping arm 9, normal rotation of the second ball screw 81 is guaranteed, accurate adjustment of the net arm sliding block 84 is further achieved, and the net arm sliding block 84 moves parallel to the second sliding plate 3 and further drives the net frame 7 to move greatly according to the direction.

More specifically, the web arm beam 85 is disposed on the web arm slider 84, and further can move along the second linear guide rail 86, where the web arm beam 85 is parallel to the second ball screw 81, and the web frame 7 is telescopically disposed on the web arm beam 85, and can move perpendicular to the second sliding plate 3, and also can move downward.

As shown in fig. 2 and 3, the electric clamp arm device further comprises two electric clamp arms 9 which are symmetrically arranged, one end of each electric clamp arm 9 is in sliding connection with the net arm beam 85, each electric clamp arm 9 is fixed with the net arm beam 85 through a fixing piece 10, and each electric clamp arm 9 is perpendicular to the plate surface of the second sliding plate 3; two electric clamping arms 9 clamp the net frame 7; the distance between the free ends of the two electric clamping arms 9 is the length of the net frame 7, the distance between the two electric clamping arms 9 can be adjusted, the net frames 7 with different sizes can be used according to practical situations, after the two electric clamping arms 9 are approximately adjusted, the two electric clamping arms 9 are respectively fixed with the net arm beam 85 by the two fixing pieces 10, and meanwhile, the two electric clamping arms are fixed by practical screws and are adjusted at the later stage.

As shown in fig. 2 and 3, the electric clamp arm 9 includes a connection seat 91, a deployment arm 92, a third driving member 93, and a third ball screw 94, the connection seat 91 is slidably connected to the web arm cross member 85, and after the two electric clamp arms 9 are adjusted, the connection seat 91 is fixed to the web arm cross member 85 by the fixing member 10.

More specifically, the third ball screw 94 is vertically arranged on the connecting seat 91, the third driving piece 93 is in transmission connection with a nut of the third ball screw 94 through a sleeve, the nut of the third ball screw 94 is in rotation connection with the connecting seat 91, the expanding arm 92 is arranged on the connecting seat 91 in a sliding manner along the vertical direction, one end, far away from the third driving piece 93, of the screw of the third ball screw 94 is fixedly connected with the expanding arm 92, the screw of the third ball screw 94 can move in the sleeve, and then the net frame 7 is driven to move up and down in a small amplitude through the third ball screw, so that the defect of the movement of the main lifting mechanism 5 in the vertical direction is compensated, and the precision is higher; while the spreading arm 92 is arranged perpendicular to the second slide 3.

As shown in fig. 2 and 3, the device further comprises a fourth driving piece 95, a fourth ball screw 96 and a leveling seat 97, wherein the leveling seat 97 is slidably arranged on the spreading arm 92, and the leveling seat 97 is connected with the screen frame 7; the fourth ball 96 sets up along the exhibition arm 92, and the screw drive of fourth driving piece 95 and fourth ball 96 is connected, and the screw rod of fourth ball 96 and leveling seat 97 threaded connection, and during the concrete implementation, fourth driving piece 95 sets up the one end of keeping away from connecting seat 91 at exhibition arm 92, and it is connected with fourth ball 96 transmission, drives leveling seat 97 and moves on exhibition arm 92, and then accurate control screen frame 7 moves along the face of perpendicular to second slide 3.

As shown in fig. 3, in the implementation, the leveling seat 97 includes a positioning screw 971, a u-shaped slide 972 and two adjusting screws 973, the opening of the u-shaped slide 972 is downward, the u-shaped slide 972 is covered on the spreading arm 92, and the positioning screw 971 is connected with two side walls of the u-shaped slide 972; the extending arm 92 is horizontally provided with a long sliding hole 921 in a penetrating way, the positioning screw 971 is arranged in the long sliding hole 921 in a sliding way, and the screw rod of the fourth ball screw 96 is in threaded connection with the positioning screw 971;

more specifically, the U-shaped slide 972 includes two L-shaped connectors 9721, the two L-shaped connectors 9721 are symmetrically arranged about the spreading arm 92, right-angle edges of the two L-shaped connectors 9721 partially overlap, one end of a positioning screw 971 is vertically connected with an inner wall of one L-shaped connector 9721, and the other end of the positioning screw 971 is threaded through the other L-shaped connector 9721 and is connected with an adjusting nut 974 for adjusting the positioning screw 971; wherein an L-shaped connecting piece 9721 at one side of the principle adjusting nut 974 is connected with the net frame 7;

more specifically, two adjusting screws 973 are vertically disposed at the overlapping portion of two L-shaped connectors 9721, two adjusting screws 973 are in threaded connection with one L-shaped connector 9721 located at the top and are abutted against the other L-shaped connector 9721, two adjusting screws 973 are distributed on two sides of the positioning screw 971 along the sliding direction of the u-shaped sliding seat 972, the L-shaped connector 9721 located at the bottom is difficult to rotate around the positioning screw 971 due to tight fit with the spreading arm 92, the L-shaped connector 9721 located at the top and the other L-shaped connector 9721 located at the bottom have a larger gap, and the L-shaped connector 9721 can rotate around the positioning screw 971, so that the inclination angle of the L-shaped connector 9721 located at the top is adjusted by adjusting the length between the two L-shaped connectors 9721 of the adjusting screws 973 located on two sides of the positioning screw 971, and the inclination angle of the net frame 7 is adjusted.

And scale marks are also provided on the spreader arm 92 for a worker to check the accuracy and correction of the fourth ball screw 96, etc.

The scraper moving assembly 11 is further included as shown in fig. 1 and 4, and the scraper moving assembly 11 includes a first mounting plate 111, a fifth driving member 112, a fifth ball screw 113 and two third linear guide rails 114, wherein the first mounting plate 111 is horizontally arranged on the first sliding plate 2 and forms a triangular stable structure through stiffening structures; the fifth ball screw 113 and the two third linear guide rails 114 are arranged at the bottom of the first mounting plate 111 in parallel with each other, the fifth ball screw 113 is positioned between the two third linear guide rails 114, and the third linear guide rails 114 are parallel with the first sliding plate 2;

more specifically, the device further comprises a second mounting plate 115, a fourth linear guide 116, a scraper slide 117 and a first adjusting screw 118, one end of the second mounting plate 115 is simultaneously in sliding connection with the two third linear guide 114, a stable sliding connection is formed, a stable adjusting environment is formed for the fifth ball screw 113, a nut of the fifth ball screw 113 is fixed with the second mounting plate 115, a fifth driving piece 112 is in transmission connection with a screw of the fifth ball screw 113 through a belt pulley, and the fifth ball screw 113 drives the second mounting plate 115 to move parallel to the first slide plate 2 in the horizontal direction, and is a main driving source of the scraper 6 to drive the scraper 6 to scrape ink reciprocally.

More specifically, the fourth linear guide 116 is disposed at the bottom of the second mounting plate 115, the fourth linear guide 116 is perpendicular to the third linear guide 114, the scraper slide 117 is slidably disposed on the fourth linear guide 116, one end of the first adjusting screw 118 is rotatably connected to the second mounting plate 115, and the other end of the first adjusting screw 118 is in threaded connection with the scraper slide 117. The doctor blade slide 117 is controlled to move perpendicularly to the first slide plate 2 by the first dispensing screw 118, mainly for adjusting the position of the doctor blade 6 on the screen frame 7, and limiting the range of the reciprocating doctor blade 6 on the screen frame 7.

As shown in fig. 4 and 5, the scraper device further comprises a second mounting seat 119, a third mounting seat 120, a gas spring 121, a cam connecting rod mechanism 122, a driving rod 123 and a sixth driving piece 124, wherein the second mounting seat 119 is arranged at the bottom of the scraper slide seat 117 in a sliding manner along the vertical direction, the gas spring 121 is arranged at the bottom of the second mounting seat 119 downwards, the driving rod 123 is arranged on the second mounting seat 119 in a sliding manner along the vertical direction, the cam connecting rod mechanism 122 is used for driving the driving rod 123 to move up and down, the sixth driving piece 124 is connected with a cam of the cam connecting rod mechanism 122 through a gear box in a transmission manner, the lower end of the driving rod 123 and a piston rod of the gas spring 121 are connected with the third mounting seat 120, and the scraper 6 is movably arranged at the bottom of the third mounting seat 120. In specific implementation, the cam link mechanism 122 drives the driving rod 123 to move up and down, so as to control the scraping and lifting reset of the scraper 6, and the whole scraping process of the scraper 6 is realized by matching with the reciprocating movement of the fifth ball screw 113.

Meanwhile, when the driving rod 123 moves to the lowest end, the force of the scraper 6 abutting against the screen frame 7 can be enhanced by matching with the gas spring 121, so that a better scraping effect is achieved; the scraper adopts a servo motor to control the scraper to work up and down and scrape materials left and right, and has high sensitivity, strong reliability and high movement speed.

As shown in fig. 4 and 5, the scraper adjusting seat 13, a trapezoidal guide rail 131, a first fixing bolt 132, a second fixing bolt 133, a scraper mounting seat 134 and a third fixing bolt 135 are further included, the trapezoidal guide rail 131 is fixedly arranged at the bottom of the third mounting seat 120, and the trapezoidal guide rail 131 is parallel to the third linear guide rail 114;

the scraper adjusting seat 13 is arranged on the trapezoid guide rail 131 in a sliding manner, the trapezoid guide rail 131 is matched with the guide rail, a better guiding effect can be provided, meanwhile, the first fixing bolt 132 is in threaded connection with the scraper adjusting seat and is abutted to the trapezoid guide rail 131, the scraper adjusting seat 13 is fixed with the trapezoid guide rail 131, the position of the scraper 6 can be finely adjusted, and the scraping range of the scraper 6 is controlled.

More specifically, the bottom of the scraper adjusting seat 13 is provided with a first U-shaped clamping connector 136 with a downward opening, the second fixing bolt 133 passes through one side wall of the first U-shaped clamping connector 136 and is in threaded connection with the other side wall of the first U-shaped clamping connector, the part of the second fixing bolt 133 located in the groove of the first U-shaped clamping connector 136 is rotationally connected with an angle adjusting plate 137, and the second fixing bolt 133 can lock the first U-shaped clamping connector 136 and the angle adjusting plate 137.

The top of the scraper mounting seat 134 is provided with a second U-shaped clamping connector 138 with an upward opening, a third fixing bolt 135 penetrates through one side wall of the second U-shaped clamping connector 138 and is in threaded connection with the other side wall of the second U-shaped clamping connector, the angle adjusting plate 137 is in rotary connection with the part of the third fixing bolt 135 located in the groove of the second U-shaped clamping connector 138, the third fixing bolt 135 is mutually perpendicular to the second fixing bolt 133, the first U-shaped clamping connector 136 and the second U-shaped clamping connector 138 form a universal joint adjusting piece, a certain angle can be kept by mutual self-locking, and then the scraper 6 is controlled to keep the optimal scraping angle.

The doctor blade 6 is detachably connected to the doctor blade mounting base 134, and is conveniently replaced, usually by screw fixation.

As shown in fig. 4, the second adjusting screw 14 is rotatably disposed on the scraper slide 117, the second adjusting screw 14 is vertically disposed, the lower end of the second adjusting screw 14 is in threaded connection with the second mounting seat 119, and the positions of the scraper slide 117 and the second mounting seat 119 are adjusted by rotating the second adjusting screw 14, so as to further control the vertical height of the scraper 6, and then the accurate control of the height position of the scraper is realized by matching with the cam connecting rod.

The first driving piece 54, the second driving piece 83, the third driving piece 93, the fourth driving piece 95, the fifth driving piece 112 and the sixth driving piece 124 are all servo motors, and all actions are controlled and regulated by the servo motors, so that the precision is high, the efficiency is high, and the reliability is high.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A printing unit, characterized in that: the automatic printing machine comprises a printing head seat (1), a first sliding plate (2), a second sliding plate (3), a lifting cylinder (4) and a main lifting mechanism (5), wherein the first sliding plate (2) and the second sliding plate (3) are arranged on the printing head seat (1) in a sliding manner along the vertical direction, and the first sliding plate (2) is positioned above the second sliding plate (3);

two ends of the lifting cylinder (4) are respectively connected with the first sliding plate (2) and the second sliding plate (3); the main lifting mechanism (5) is used for driving the second sliding plate (3) to move on the print head seat (1);

the first sliding plate (2) is provided with a movable scraper (6); the second sliding plate (3) is provided with a movable net frame (7).

2. A printing unit according to claim 1, wherein the main lifting mechanism (5) comprises a first mounting base (51), a first ball screw (52), a nut sleeve (53) and a first driving member (54), the first mounting base (51) being horizontally mounted on top of the printing head base (1),

the first driving piece (54) and the first ball screw (52) are vertically arranged at two ends of the first mounting seat (51) respectively, and the screw rod of the first ball screw (52) and the first mounting seat (51) are vertically arranged at two ends of the first mounting seat (51)

The nut of the first ball screw (52) is coaxially connected with the nut sleeve (53), and one end, far away from the first mounting seat (51), of the nut sleeve (53) is fixedly connected with the second sliding plate (3); the first drive element (54) is in driving connection with the screw.

3. A printing unit according to claim 2, further comprising a web arm translation mechanism (8), the web arm translation mechanism (8) comprising a second ball screw (81), a second drive (83), a web arm slider (84), a web arm cross beam (85) and two second linear guides (86);

the second ball screw (81) and the two second linear guide rails (86) are horizontally arranged on the second sliding plate (3), and the second driving piece (83) is in transmission connection with the screw of the second ball screw (81); the two second linear guide rails (86) are symmetrically arranged on the upper side and the lower side of the second ball screw (81); the middle part of the net arm sliding block (84) is fixedly connected with a nut of the second ball screw (81), and the upper end and the lower end of the net arm sliding block (84) are respectively connected with two second linear guide rails (86) in a sliding manner; the net arm cross beam (85) is arranged on the net arm sliding block (84), the net arm cross beam (85) is parallel to the second ball screw (81), and the net frame (7) is arranged on the net arm cross beam (85) in a telescopic mode.

4. A printing unit according to claim 3, further comprising two electric clamp arms (9) symmetrically arranged with each other, wherein one end of each electric clamp arm (9) is slidably connected to the web arm beam (85), the electric clamp arms (9) are fixed to the web arm beam (85) by fixing members (10), and the electric clamp arms (9) are perpendicular to the plate surface of the second slide plate (3); two electric clamping arms (9) clamp the net frame (7);

the electric clamping arm (9) comprises a connecting seat (91), a spreading arm (92), a third driving piece (93) and a third ball screw (94), wherein the connecting seat (91) is in sliding connection with the net arm cross beam (85), the third ball screw (94) is vertically arranged on the connecting seat (91), the third driving piece (93) is in transmission connection with a nut of the third ball screw (94) through a sleeve, the nut of the third ball screw (94) is in rotary connection with the connecting seat (91), the spreading arm (92) is arranged on the connecting seat (91) in a sliding manner along the vertical direction, one end, far away from the third driving piece (93), of the screw of the third ball screw (94) is fixedly connected with the spreading arm (92), and the spreading arm (92) is vertical to the second sliding plate (3).

The device further comprises a fourth driving piece (95), a fourth ball screw (96) and a leveling seat (97), wherein the leveling seat (97) is arranged on the expanding arm (92) in a sliding manner, and the leveling seat (97) is connected with the net frame (7); the fourth ball screw (96) is arranged along the expanding arm (92), the fourth driving piece (95) is in transmission connection with a screw rod of the fourth ball screw (96), and the screw rod of the fourth ball screw (96) is in threaded connection with the leveling seat (97).

5. A printing unit according to claim 4, wherein the levelling seat (97) comprises a set screw (971), a u-shaped slide (972) and two adjusting screws (973), the opening of the u-shaped slide (972) being arranged downwards, the set screw (971) being connected to both side walls of the u-shaped slide (972); a long sliding hole (921) is horizontally formed in the extending arm (92) in a penetrating mode, the positioning screw (971) is arranged in the long sliding hole (921) in a sliding mode, and a screw rod of the fourth ball screw (96) is in threaded connection with the positioning screw (971);

the U-shaped sliding seat (972) comprises two L-shaped connecting pieces (9721), the two L-shaped connecting pieces (9721) are symmetrically arranged relative to the expanding arm (92), right-angle edges of the two L-shaped connecting pieces (9721) are partially overlapped, one end of the positioning screw (971) is vertically connected with the inner wall of one L-shaped connecting piece (9721), and the other end of the positioning screw (971) is penetrated out of the other L-shaped connecting piece (9721) and is in threaded connection with an adjusting nut (974); -one of said L-shaped connectors (9721) is connected to said frame (7);

the two adjusting screws (973) are vertically arranged at the overlapping parts of the two L-shaped connecting pieces (9721), the two adjusting screws (973) are in threaded connection with the L-shaped connecting pieces (9721) at the top and are abutted with the other L-shaped connecting piece (9721), and the two adjusting screws (973) are distributed on two sides of the positioning screw (971) along the sliding direction of the U-shaped sliding seat (972).

6. A printing unit according to claim 2, further comprising a doctor moving assembly (11), the doctor moving assembly (11) comprising a first mounting plate (111), a fifth driving member (112), a fifth ball screw (113) and two third linear guides (114), the first mounting plate (111) being horizontally arranged on the first slide (2), the fifth ball screw (113) and the two third linear guides (114) being arranged parallel to each other at the bottom of the first mounting plate (111), the fifth ball screw (113) being located between the two third linear guides (114), the third linear guides (114) being parallel to the first slide (2);

the device further comprises a second mounting plate (115), a fourth linear guide rail (116), a scraper slide seat (117) and a first adjusting screw (118), wherein one end of the second mounting plate (115) is simultaneously connected with the two third linear guide rails (114) in a sliding manner, a nut of a fifth ball screw (113) is fixed with the second mounting plate (115), and a fifth driving piece (112) is connected with the screw of the fifth ball screw (113) in a transmission manner; the scraper sliding seat (117) is arranged on the fourth linear guide rail (116) in a sliding mode, one end of the first adjusting screw (118) is rotatably connected with the second mounting plate (115), and the other end of the first adjusting screw (118) is in threaded connection with the scraper sliding seat (117).

7. The printing unit according to claim 6, further comprising a second mounting seat (119), a third mounting seat (120), a gas spring (121), a cam link mechanism (122), a driving rod (123) and a sixth driving member (124), wherein the second mounting seat (119) is slidably arranged at the bottom of the doctor sliding seat (117) along the vertical direction, the gas spring (121) is downwardly arranged at the bottom of the second mounting seat (119), the driving rod (123) is slidably arranged on the second mounting seat (119) along the vertical direction, the cam link mechanism (122) is used for driving the driving rod (123) to move up and down, the sixth driving member (124) is in cam transmission connection with the cam link mechanism (122), the lower end of the driving rod (123) and a piston rod of the gas spring (121) are both connected with the third mounting seat (120), and the doctor (6) is movably arranged at the bottom of the third mounting seat (120).

8. The printing unit according to claim 7, further comprising a doctor blade adjustment seat (13), a trapezoidal guide rail (131), a first fixing bolt (132), a second fixing bolt (133), a doctor blade mounting seat (134) and a third fixing bolt (135), wherein the trapezoidal guide rail (131) is fixedly arranged at the bottom of the third mounting seat (120), and the trapezoidal guide rail (131) is aligned with the third straight line

The guide rails (114) are parallel;

the scraper adjusting seat (13) is arranged on the trapezoid guide rail (131) in a sliding manner, and the first fixing bolt (132) is used for fixing the scraper adjusting seat (13) and the trapezoid guide rail (131); the bottom of the scraper adjusting seat (13) is provided with a first U-shaped clamping connector (136) with a downward opening, the second fixing bolt (133) penetrates through one side wall of the first U-shaped clamping connector (136) and is in threaded connection with the other side wall of the first U-shaped clamping connector, and an angle adjusting plate (137) is rotatably connected to the part of the second fixing bolt (133) located in the groove of the first U-shaped clamping connector (136);

the top of the scraper mounting seat (134) is provided with a second U-shaped clamping connector (138) with an upward opening, the third fixing bolt (135) penetrates through one side wall of the second U-shaped clamping connector (138) and is in threaded connection with the other side wall of the second U-shaped clamping connector, the angle adjusting plate (137) is in rotary connection with the part, located in the groove of the second U-shaped clamping connector (138), of the third fixing bolt (135), and the third fixing bolt (135) is perpendicular to the second fixing bolt (133); the scraper (6) is detachably connected with the scraper mounting seat (134).

9. A printing unit according to claim 7, wherein a second adjusting screw (14) is rotatably arranged on the doctor slide (117), the second adjusting screw (14) is vertically arranged, and the lower end of the second adjusting screw (14) is in threaded connection with the second mounting seat (119).

10. A printing unit according to claim 5 or 9, wherein the first (54), second (83), third (93), fourth (95), fifth (112) and sixth (124) drive members are servo motors.