CN116512739A

CN116512739A - Screen printing apparatus

Info

Publication number: CN116512739A
Application number: CN202310701199.XA
Authority: CN
Inventors: 蒋海龙; 蒋明勇
Original assignee: Shenzhen Tfd Automation Equipment Co ltd
Current assignee: Shenzhen Tfd Automation Equipment Co ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-08-01

Abstract

The invention discloses screen printing equipment which comprises a frame, a screen printing mechanism, a color code positioning mechanism, a feeding mechanism, a material conveying mechanism and a discharging mechanism, wherein the screen printing mechanism is arranged on the frame and used for carrying out position adjustment and screen printing on materials, the color code positioning mechanism is arranged on the screen printing mechanism and used for carrying out color code positioning on the materials, the feeding mechanism is arranged on the side part of the frame and used for feeding, the material conveying mechanism is arranged on the frame and used for taking down the materials from the feeding mechanism and conveying the materials to the screen printing mechanism, and the discharging mechanism is arranged on the frame and used for taking down and removing the materials subjected to screen printing from the screen printing mechanism. The invention has the advantages of convenient positioning, accurate positioning, high precision, convenient printing and the like.

Description

Screen printing apparatus

Technical Field

The invention belongs to the technical field of automatic printing equipment, and particularly relates to screen printing equipment.

Background

Screen printing, that is, screen printing, refers to the process of making screen printing plate with graphics and texts by using screen as a plate base and adopting a photosensitive plate making method. The screen printing is composed of five major elements, including a screen printing plate, a scraping plate, printing ink, a printing table and a printing stock, wherein the mesh of the image-text part of the screen printing is permeable to the printing ink, the mesh of the non-image-text part of the screen printing cannot be printed by the basic principle of the printing ink, the printing ink is poured into one end of the screen printing plate during printing, a certain pressure is applied to the printing ink part on the screen printing plate by the scraping plate, and meanwhile, the printing ink is uniformly moved towards the other end of the screen printing plate, and is extruded into the printing stock by the scraping plate in the moving process, as disclosed in patent application number 202122374414.6, the paper box rotary screen printing device comprises a base, a control part arranged on one side of the base, a printing chamber arranged at the upper end of the base, and a first hydraulic rod arranged at the upper end of the printing chamber, wherein the printing chamber comprises a printing chamber support frame, a servo motor arranged in the printing chamber support frame and positioned at the upper end of the base, a rotary disc combination arranged at the output end of the servo motor, a screen printing plate combination arranged above the rotary disc combination, and a printing brush body arranged on the screen printing plate combination, and the paper box rotary screen printing device capable of ensuring that each pattern can be printed consistently by the structure;

however, it is obvious that the above-mentioned rotary screen printing device for paper cassettes or other existing screen printing devices rely on the appearance of the object to be printed for positioning, and the positioning error is large.

Disclosure of Invention

The screen printing equipment is positioned by the color code and has high positioning precision.

In order to solve the technical problems, the invention adopts the following technical scheme:

screen printing apparatus comprising:

a frame;

the screen printing mechanism is arranged on the frame and is used for adjusting the position of the material and performing screen printing;

the color code positioning mechanism is arranged on the screen printing mechanism and is used for positioning color codes of materials;

the feeding mechanism is arranged at the side part of the frame and is used for feeding;

the material conveying mechanism is arranged on the frame and used for taking down materials from the material feeding mechanism and conveying the materials to the screen printing mechanism; and

and the blanking mechanism is arranged on the frame and used for taking down and removing the material which is subjected to screen printing from the screen printing mechanism.

Preferably, the feeding mechanism includes:

the first mounting rack is arranged at the side part of the rack;

the lifting plate is arranged on the first mounting frame in a sliding manner;

the first driving assembly is arranged on the first mounting frame and used for driving the lifting plate to lift.

Preferably, the feeding mechanism comprises:

the first conveying belt is arranged at the right part of the frame and is adjacent to the first mounting frame;

the first conveying assembly is arranged on the frame and is positioned above the first conveying belt, and the first conveying assembly is used for taking down materials from the feeding mechanism and conveying the materials to the first conveying belt;

the second conveying assembly is arranged on the frame and positioned above the first conveying belt, and is used for conveying materials from the first conveying belt to the screen printing mechanism; and

the limiting assembly is arranged on the frame and located above the first conveying belt, and the limiting assembly is located between the first conveying assembly and the second conveying assembly and used for limiting materials.

Preferably, the screen printing mechanism includes:

the second mounting rack is arranged on the rack;

the printing plate is arranged above the frame and used for printing, and the second conveying assembly is used for conveying materials from the first conveying belt to the printing plate;

the position adjusting assembly is arranged on the frame and positioned below the printing plate, and is connected with the printing plate and used for adjusting the position of the printing plate;

the sliding frame is arranged on the second installation frame in a sliding manner;

the second driving assembly is arranged on the second mounting frame and used for driving the sliding frame to slide up and down; and

the screen printing assembly is arranged on the sliding frame and used for carrying out screen printing on materials on the printing plate, and the screen printing assembly and the printing plate are correspondingly arranged up and down.

Preferably, the color patch positioning mechanism includes:

the guide rail is arranged on the second mounting frame;

at least one group of displacement driving components are arranged on the guide rail in a sliding way;

the color code positioning assembly is arranged on the displacement driving assembly and connected with the displacement driving assembly, the displacement driving assembly is used for driving the color code positioning assembly connected with the displacement driving assembly to displace, and the color code positioning assembly is used for identifying and positioning the color of the material on the printing plate; and

the at least one group of fastening components are arranged below the displacement driving component and are connected with the displacement driving component, and the fastening components are used for fixing the displacement driving component connected with the fastening components.

Preferably, the displacement driving assembly includes:

the mounting seat is arranged on the guide rail in a sliding manner;

the sliding seat is arranged on the mounting seat in a sliding manner; and

the power source is arranged on the mounting seat and used for driving the sliding seat to slide.

Preferably, the color code positioning assembly comprises a color code sensor, and the color code sensor is connected with the sliding seat through a connecting frame.

Preferably, the blanking mechanism includes:

the second conveying belt is arranged on the frame and used for conveying the material subjected to screen printing;

and the third conveying assembly is arranged on the frame and positioned above the second conveying belt, and is used for conveying the material subjected to screen printing from the printing plate to the second conveying belt.

Preferably, the device further comprises a jacking component, wherein the jacking component is arranged in the position adjusting component and is used for jacking materials on the printing plate.

By adopting the technical scheme, the invention has the following beneficial effects:

the invention is provided with the position adjusting component, the color code positioning mechanism and other parts, when the invention is applied specifically, the color code positioning component can be used for identifying and positioning the color of the material on the printing plate, and when the position is deviated, the position adjusting component can adjust the printing plate so as to adjust the material on the printing plate, thereby ensuring accurate positioning and high precision and being convenient for printing;

in conclusion, the invention has the advantages of convenient positioning, accurate positioning, high precision, convenient printing and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is an exploded view of the positioning mechanism, loading mechanism, feeding mechanism, blanking mechanism and portions of the frame of FIG. 1 with color code removed;

FIG. 3 is a schematic view of the color patch positioning mechanism of the present invention;

fig. 4 is a schematic view of the structure of the printing plate and the position adjusting assembly of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.

The components of the embodiments of the present invention 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 invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 to 4, in one embodiment of the present invention, the screen printing apparatus of the present invention comprises a frame 1, a screen printing mechanism, a color patch positioning mechanism, a feeding mechanism and a discharging mechanism, wherein the screen printing mechanism, the feeding mechanism and the discharging mechanism are all arranged on the frame 1, the color patch positioning mechanism is arranged on the screen printing mechanism, the screen printing mechanism is mainly used for performing position adjustment and screen printing on materials, the materials are the products to be screen printed, the color patch positioning mechanism is mainly used for performing color patch positioning on the materials, the feeding mechanism is used for feeding, the feeding mechanism is used for removing and conveying the materials from the feeding mechanism to the screen printing mechanism, and the discharging mechanism is used for removing and removing the materials which are completed screen printing from the screen printing mechanism;

that is, in the present invention, the specific application steps should be that the material, that is, the product to be screen printed, is placed on the feeding mechanism, the feeding mechanism may perform feeding, the conveying mechanism may take down the material on the feeding mechanism and convey the material to the screen printing mechanism, then the color code positioning mechanism performs color code positioning on the material, when there is a deviation, the screen printing mechanism may adjust the position of the material, and when the position completely reaches the set position, the screen printing is performed, and after the screen printing is completed, the discharging mechanism may take down and remove the material that completes the screen printing.

Referring to fig. 1, the feeding mechanism of the present invention includes a first mounting frame 2, a lifting plate 3 and a first driving component 4, where the first mounting frame 2 is disposed at a side portion of the frame 1, specifically in the present invention, the first mounting frame 2 is disposed on a right side of the frame 1 and adjacent to a right end of the frame 1, a height of the first mounting frame 2 is adapted to a height of the frame 1, the lifting plate 3 is slidably disposed on the first mounting frame 2, the lifting plate 3 is mainly used for lifting materials, a height of the lifting plate 3 is adapted to a height of a first conveying belt 5 and a height of a first conveying component 6 on the frame 1 when the lifting plate 3 is at a highest point, so that the first conveying component 6 is convenient for conveying the materials on the lifting plate 3 to the first conveying belt 5, and the first driving component 4 is disposed on the first mounting frame 2 and is used for driving the lifting plate 3 to lift, and the first driving component 4 may be a first driving motor and a first driving member, that is the first driving motor and the first driving member are both mounted on the first mounting frame 2, and the first driving member may be driven to lift by the first driving member 3.

With continued reference to fig. 1, the feeding mechanism of the present invention includes a first conveyor belt 5, a first conveyor assembly 6, a second conveyor assembly 7 and a limiting assembly 8, wherein the first conveyor belt 5 is disposed at the upper right portion of the frame 1, the first conveyor assembly 6, the second conveyor assembly 7 and the limiting assembly 8 are disposed on the frame 1 and are disposed above the first conveyor belt 5, the first conveyor belt 5 is disposed adjacent to the first mounting frame 2, the first conveyor assembly 6 and the second conveyor assembly 7 are disposed above the first conveyor belt 5 and the second conveyor assembly 7 is disposed at the left side of the first conveyor assembly 6, the first conveyor assembly 6 is used for removing material from the feeding mechanism and conveying the material to the first conveyor belt 5, the second conveyor assembly 7 is used for conveying the material from the first conveyor belt 5 to the screen printing mechanism, in particular the first conveyor assembly 6 includes a driving motor and a suction nozzle, the driving motor and the suction nozzle are both positioned above the first conveyor belt 5, the driving motor is used for driving the suction nozzle to move left and right, a lifting control component is also arranged between the driving motor and the suction nozzle, the lifting control component can control the suction nozzle to lift, the specific application flow is that the driving motor drives the suction nozzle to move right to the upper part of the lifting plate, the lifting control component controls the suction nozzle to move downwards and suck materials, then the lifting control component controls the suction nozzle to lift and reset, then the driving motor drives the suction nozzle to move leftwards until being positioned above the right part of the first conveyor belt 5, then the lifting control component is started again to enable the materials to be placed on the first conveyor belt 5, then the suction nozzle loosens and resets, the structure of the second conveyor component 7 is the same as that of the first conveyor component 6 and is used for conveying the materials on the first conveyor belt 5 from the first conveyor belt 5 to the screen printing mechanism, the first conveyer belt 5 also can be to left motion conveying material more be close to the second conveying component 7 at this in-process, spacing subassembly 8 is located between first conveying component 6 and the second conveying component 7 and spacing subassembly 8 is used for spacing material, specific spacing subassembly 8 includes a installing support and spacing roller, the installing support is installed on frame 1 and vertical upwards sets up, spacing roller sets up on the installing support along the fore-and-aft direction and is located the top of first conveyer belt 5, spacing roller is mainly in order to spacing material, thereby prevent that the material from warping, still can adjust position and interconnect between first conveying component 6 and the second conveying component 7 during specific application so that first conveying component 6 just adsorbs the material from lifting board 3 and when transporting, second conveying component 7 just adsorbs the material from first conveyer belt 5 and transports also that first conveying component 6 and second conveying component 7 can synchronous operation, lifting efficiency, or first conveying component 6 and second conveying component 7 separately work.

Referring to fig. 1, 2 and 4, the screen printing mechanism of the present invention specifically includes a second mounting frame 9, a printing plate 10, a position adjusting assembly, a carriage 11, a second driving assembly 12 and a screen printing assembly, wherein the second mounting frame 9 and the position adjusting assembly are disposed on the frame 1, the printing plate 10 is disposed above the frame 1 and is used for printing, the carriage 11 and the second driving assembly 12 are disposed on the second mounting frame 9, the screen printing assembly is disposed on the carriage 11, the second conveying assembly 7 is used for conveying materials from the first conveying belt 5 to the screen printing mechanism, that is, conveying the materials from the first conveying belt 5 to the printing plate 10, the position adjusting assembly is disposed below the printing plate 10 and is connected with the printing plate 10, the position adjusting assembly is mainly used for adjusting the position of the printing plate 10, the carriage 11 is slidably disposed on the second mounting frame 9, the second driving assembly 12 is mainly used for driving the carriage 11 to slide up and down, the screen printing assembly is used for carrying out screen printing on the materials on the printing plate 10, and the screen printing assembly is disposed correspondingly up and down to the printing plate 10;

referring to fig. 4 specifically, the position adjusting assembly is located above the middle of the frame 1, that is, the position adjusting assembly is located between the first conveyor belt 5 and the discharging mechanism, and the height of the position adjusting assembly is lower than the height of the first conveyor belt 5 and the height of the second conveyor belt of the discharging mechanism, the printing plate 10 is disposed on the position adjusting assembly and is matched with the heights of the first conveyor belt 5 and the second conveyor belt so as to be convenient for conveying materials, the position adjusting assembly comprises an adjusting support plate 13, a group of transverse adjusting assemblies 14 and two groups of longitudinal adjusting assemblies 15, the printing plate 10 is disposed on the adjusting support plate 13, a group of transverse adjusting assemblies 14 and two groups of longitudinal adjusting assemblies 15 are disposed on the middle of the frame 1, the left, middle and right parts of the adjusting support plate 13 are respectively located in the cavities of the middle and the front part of the adjusting support plate 13, the group of transverse adjusting assemblies 14 are respectively located in the cavities of the middle and the front part of the adjusting support plate 13, the two groups of longitudinal adjusting components 15 are arranged in the cavities at the left part and the right part of the adjusting supporting plate 13, a first sliding rail 16 in the front-back direction is arranged at the left position in the middle-front part cavity of the adjusting supporting plate 13, the transverse adjusting component 14 comprises a driving air cylinder, the output end of the driving air cylinder is arranged towards the left, a sliding block is slid on the first sliding rail 16 in the front-back direction, the driving air cylinder is movably connected with the sliding block, a second sliding rail 17 in the left-right direction is arranged at the rear position in the left part and the right part cavity of the adjusting supporting plate 13, the two groups of longitudinal adjusting components 15 also comprise driving air cylinders, the output end of the driving air cylinder is arranged towards the rear, the sliding block is also slid on the second sliding rail 17 and is movably connected with the output shaft of the driving air cylinder of the longitudinal adjusting component 15, the other groups of longitudinal adjusting components 15 have the same structure and are not repeated, the transverse adjusting component 14 can drive the adjusting supporting plate 13 and the printing support plate 10 on the adjusting supporting plate 13 to move transversely, namely move left and right, when moving left and right, the driving air cylinder of the longitudinal adjusting component 15 can slide on the second sliding rail 17 through the sliding block, the two groups of longitudinal adjusting components 15 can simultaneously start to drive the adjusting supporting plate 13 and the printing support plate 10 on the adjusting supporting plate 13 to move longitudinally, namely move back and forth, when moving back and forth, the driving air cylinder of the transverse adjusting component 14 can slide on the first sliding rail 16 through the sliding block, it can be understood that the feeding back of the color mark positioning mechanism is based on the feeding back of the color mark positioning mechanism when the position of the printing support plate 10 is adjusted, the control system can be connected with the color mark positioning mechanism, the transverse adjusting component 14 and the longitudinal adjusting component 15, the color mark positioning mechanism can feed back to the control system after the color mark positioning mechanism finds that the material is deviated, the control system can start to drive the transverse adjusting component 14 and the longitudinal adjusting component 15 to start to displace specifically until the material reaches the set position;

the transverse adjusting assembly 14 and the longitudinal adjusting assembly 15 can also be specifically structures such as a driving motor and a screw rod assembly, wherein the driving motor of the transverse adjusting assembly 14 is connected with the adjusting support plate 13 and the first sliding rail 16 through the screw rod assembly, the driving motor of the transverse adjusting assembly 14 can drive the adjusting support plate 13 to transversely move through the screw rod assembly, the driving motors of the two groups of longitudinal adjusting assemblies 15 can be connected with the adjusting support plate 13 and the second sliding rail 17 through the screw rod assembly, so that the adjusting support plate 13 can be driven to longitudinally move, and the driving motor and the screw rod assembly are connected to drive the sliding structure of the adjusting support plate 13 to be of the prior art, and specific and more detailed structures are not repeated.

Referring specifically to fig. 2, the second driving assembly 12 includes a driving motor, a guiding structure, a screw slider, and other parts, where the driving motor, the guiding structure, the screw slider, and other parts are all disposed on the second mounting frame 9, it can be understood that the driving motor is connected to the screw to drive the screw to rotate, in this process, the guiding structure can support and guide the screw, the screw is slidably mounted on the screw, the screw is connected to the sliding frame 11, the driving motor drives the screw to rotate so as to drive the screw slider to move up and down to drive the sliding frame 11 to move up and down, which is a mature technology, and the screen printing assembly specifically includes a left screen fixing member 18, a right screen fixing member 19, a screen (in the mature technology, not shown in the drawing), a scraping member, and other parts, where the left screen fixing member 18 and the right screen fixing member 19 are disposed on the left and right sides of the sliding frame 11 respectively, the screen plate is clamped between the left screen plate fixing part 18 and the right screen plate fixing part 19, the left screen plate fixing part 18 and the right screen plate fixing part 19 are provided with micro-adjusting parts which can be used for adjusting the upper frame of the screen plate and the positions in the front-rear direction, the oil scraping part comprises two driving air cylinders, a first scraper 20, a second scraper 21 and a left-right driving assembly 22, the left-right driving assembly 22 is arranged above the middle part of the front side of the sliding frame 11, the oil scraping part is arranged on the left-right driving assembly 22, the left-right driving assembly 22 can drive the oil scraping part to move left and right, the two driving air cylinders of the oil scraping part are respectively connected with the first scraper 20 and the second scraper 21, the upper side part of the screen plate is provided with ink, when the ink scraping part is particularly used, the left-right driving assembly 22 and the driving air cylinders can drive the first scraper 20 to move left and right and up and down so as to spread the ink on the screen plate, the left-right driving component 22 and the other driving cylinder can also drive the second scraper 21 to carry out screen printing, the invention further comprises a jacking component, the jacking component is arranged in the position adjusting component and is used for jacking materials on the printing plate, the printing plate 10 is provided with a through hole 23, the jacking component is positioned below the printing plate 10 and is arranged towards the through hole 23, the jacking component is used for jacking the materials which are subjected to screen printing on the printing plate 10 through the through hole 23, and when the screen printing is finished by the materials, the jacking component starts jacking the left end part of the materials so as to facilitate the blanking mechanism to clamp and take down the materials, namely, the jacking component is positioned at the left part below the printing plate 10.

With continued reference to fig. 3, the color mark positioning mechanism of the present invention includes a guide rail 24, at least one set of displacement driving components 25, at least one set of color mark positioning components and at least one set of fastening components 26, the guide rail 24 is disposed in the middle of the rear part of the second mounting frame 9, the displacement driving components 25 are slidably disposed on the guide rail 24, the color mark positioning components are disposed on the displacement driving components 25 and connected with the displacement driving components 25, the displacement driving components 25 are used for driving the color mark positioning components connected with the displacement driving components 25 to displace, the color mark positioning components are used for recognizing and positioning the color of the material on the printing support 10, the fastening components 26 are disposed below the displacement driving components 25 and connected with the displacement driving components 25, the fastening components 26 are used for fixing the displacement driving components 25 connected with the fastening components 26, the displacement driving components 25 specifically include a mounting seat, a sliding seat and a power source, the mounting seat is slidably disposed on the guide rail 24, the sliding seat is slidably disposed on the mounting seat, the power source is disposed on the mounting seat and is used for driving the sliding seat, the displacement positioning components include a sensor 27, the color mark sensor 27 is disposed below the displacement driving components, and is connected with the color mark positioning components 27 through the color mark positioning components, and can be controlled by the color mark sensor 27, and the color mark positioning components can be accurately positioned by the color mark positioning system, and the color mark sensor 27 can be controlled by the color mark positioning system;

in particular, the number of the displacement driving components 25, the color code positioning components and the fastening components 26 is equal to three, the guide rail 24 comprises two guide rails 24 which are arranged at intervals in the left-right direction, the fastening components 26 comprise a fastening frame and a fastening cylinder, the fastening frame is connected with a mounting seat, the fastening cylinder is arranged in the fastening frame, the fastening cylinder can fix the fastening frame, the mounting seat and the like on the second mounting frame 9 so that the color code positioning mechanism can not be displaced, the color code positioning components can move forwards and backwards under the action of the displacement driving components 25 when in use, can be positioned above the printing plate 10 when moving forwards so as to perform color code positioning, and can move backwards when the color code positioning is finished so as to prevent obstruction.

Referring to fig. 1 again, the blanking mechanism of the present invention includes a second conveying belt 28 and a third conveying assembly 29, the second conveying belt 28 is disposed on the frame 1 and is used for conveying the material that completes the screen printing, the third conveying assembly 29 is disposed on the frame 1 and is located above the second conveying belt 28, the third conveying assembly 29 is used for conveying the material that completes the screen printing from the printing plate 10 to the second conveying belt 28, the third conveying assembly 29 includes a clamp and a driving assembly that drives the clamp to move left and right, when the material on the printing plate 10 completes the screen printing and is lifted by the lifting assembly, the clamp can clamp the material right and clamp and shift left until the material is placed on the second conveying belt 28, the lifting assembly of the present invention includes a lifting driving cylinder and a thimble, the lifting driving cylinder is disposed below the left side of the support plate, the thimble is connected with an output shaft of the lifting driving cylinder, the thimble is disposed upward, and the thimble is used for lifting up the left end of the material on the printing plate upward, and the lifting assembly can be disposed in multiple groups according to requirements.

The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.

Claims

1. Screen printing apparatus, comprising:

a frame;

2. The screen printing apparatus according to claim 1, wherein: the feed mechanism includes:

the first mounting rack is arranged at the side part of the rack;

the lifting plate is arranged on the first mounting frame in a sliding manner;

3. The screen printing apparatus according to claim 2, wherein: the material conveying mechanism comprises:

4. A screen printing apparatus according to claim 3, wherein: the screen printing mechanism includes:

the second mounting rack is arranged on the rack;

5. The screen printing apparatus according to claim 4, wherein: the color code positioning mechanism comprises:

the guide rail is arranged on the second mounting frame;

6. The screen printing apparatus according to claim 5, wherein: the displacement drive assembly includes:

the mounting seat is arranged on the guide rail in a sliding manner;

the sliding seat is arranged on the mounting seat in a sliding manner; and

7. The screen printing apparatus according to claim 6, wherein: the color code positioning assembly comprises a color code sensor, and the color code sensor is connected with the sliding seat through a connecting frame.

8. The screen printing apparatus according to claim 4, wherein: the unloading mechanism includes:

9. The screen printing apparatus according to claim 4, wherein: still include the jacking subassembly, the jacking subassembly sets up in position control subassembly and jacking subassembly is used for the material on the jacking printing plate.