CN115195280A

CN115195280A - Substrate segmentation printing machine

Info

Publication number: CN115195280A
Application number: CN202211031558.7A
Authority: CN
Inventors: 邱国良; 刘云川; 宋先玖
Original assignee: Dongguan Kaige Precision Machinery Co ltd
Current assignee: Dongguan Kaige Precision Machinery Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-10-18

Abstract

The invention relates to the technical field of substrate printing, and discloses a substrate sectional printing machine, which comprises a rack, a screen plate, a driving mechanism, a scraper mechanism and a feeding mechanism, wherein the screen plate is arranged on the rack; the screen plate is positioned above the feeding mechanism, and a mesh area is arranged on the screen plate; the feeding mechanism is connected with the rack and is used for conveying the substrate, so that a printing area needing to be printed on the substrate in the length direction can be opposite to the screen; the driving mechanism is connected with the rack and the screen plate and is used for driving the screen plate to ascend or descend; the scraper mechanism is connected with the frame and located above the screen plate and used for scraping preset materials into the mesh area, so that the preset materials are printed on the substrate in a range contacting with the mesh area. The method mainly solves the technical problem that the printing requirement of the large-size hard substrate cannot be met due to the fact that the mesh precision of the large-size screen plate is difficult to ensure in the existing manufacturing process.

Description

Substrate segmentation printing machine

Technical Field

The invention relates to the technical field of substrate printing, in particular to a substrate segmentation printing machine.

Background

In the production process of a hard substrate (such as a circuit board), a preset material (such as solder paste) needs to be brushed on the substrate, in order to achieve the purpose and improve the production efficiency, different screen plates are designed according to the position of the solder paste required to be brushed on the substrate by the existing printing machine, the screen plates with meshes are firstly pasted on the substrate during printing, then a scraper is adopted to scrape the solder paste on the screen plates, and the solder pastes can be accurately printed on each printing position (such as a welding pad) of the substrate through the meshes on the screen plates.

Specifically, in the existing full-automatic solder paste printer, one screen can be matched with a bonding pad on one substrate. The method is suitable for scenes with small substrate sizes, such as substrates with the sizes below 500x500 mm. However, if the substrate with a length of more than 2m is printed by the above method, the size of the screen plate needs to be correspondingly large, and the screen plate with a large size cannot ensure the position accuracy of each screen hole under the existing manufacturing process, and further cannot meet the use requirement of the substrate for high printing accuracy, so that a rigid substrate printer capable of aiming at the substrate with an extremely long length is urgently needed.

Disclosure of Invention

The invention aims to provide a substrate sectional printing machine, which mainly solves the technical problem that the printing requirement of a large-size hard substrate cannot be met due to the fact that a large-size screen is difficult to ensure mesh accuracy in the existing manufacturing process.

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

a substrate segment printing machine comprises a frame, a screen plate, a driving mechanism, a scraper mechanism and a feeding mechanism;

the screen plate is positioned above the feeding mechanism, and a mesh area is arranged on the screen plate;

the feeding mechanism is connected with the rack and is used for transporting the substrate, so that a printing area needing to be printed on the substrate in the length direction can be over against the screen;

the driving mechanism is connected with the rack and the screen plate and is used for driving the screen plate to ascend or descend relative to the rack so that a mesh area on the screen plate can be in contact with the top surface of the substrate on the feeding mechanism;

the scraper mechanism is connected with the rack and located above the screen plate and used for scraping preset materials into the mesh area, so that the preset materials are printed on the substrate in a range contacting with the mesh area.

In one embodiment, the driving mechanism comprises a driving module, a mounting frame and four lifting execution pieces;

the mounting frame is connected with the screen plate, the four lifting executing pieces are all connected with the mounting frame and commonly surround the periphery of the feeding mechanism, and the lifting executing pieces are used for driving the mounting frame and the screen plate to ascend or descend together;

the driving module is connected with the four lifting executing pieces, is positioned below the feeding mechanism and is used for driving the four lifting executing pieces to synchronously execute.

In one embodiment, the lifting executing part comprises a rotating part and a lifting component which are screwed; the lifting member is connected with the mounting frame;

the driving module comprises a motor, a first coupler, two first rotating shafts and two linkage assemblies;

the linkage assembly comprises a second coupler, two third couplers and two second rotating shafts, one of the second rotating shafts is connected with the second coupler and the one of the third couplers, the other of the second rotating shafts is connected with the second coupler and the other of the third couplers, and the third coupler is connected with the rotating part;

the first coupler is connected with the motor and the two first rotating shafts;

one of the first rotating shafts is connected with the second coupler on one of the linkage assemblies, and the other first rotating shaft is connected with the second coupler on the other linkage assembly.

In one embodiment, the mounting frame comprises a frame, a moving frame and a driving assembly;

the frame is connected with the four lifting executing pieces, and the moving frame is connected with the screen plate;

the driving assembly is connected with the frame and the moving frame and is positioned on the periphery of the screen plate and used for driving the moving frame to move in a plane relative to the frame, so that a mesh area on the screen plate connected to the moving frame can be aligned with a pad area on a substrate positioned on the feeding mechanism and needing to be printed with a preset material.

In one embodiment, the driving assembly includes three drivers, the drivers connect the frame and the moving frame, the drivers have a telescopic deformation characteristic, the three drivers respectively abut against the outer side wall of the moving frame, and three positions of the three drivers abutting against the moving frame are not collinear.

In one embodiment, the substrate printing machine further includes a driving member and a detection module connected to each other, the driving member is configured to drive the detection module to move between the screen and the feeding mechanism, the detection module is configured to obtain position information of the mesh area and position information of a printing area on the substrate on the feeding mechanism, and the detection module is in signal connection with the driving assembly.

In one embodiment, the scraper mechanism comprises a power module, a fixed seat and at least one scraper unit connected to the fixed seat;

the scraper unit is connected with the fixed seat and used for scraping preset materials into the mesh hole area, the fixed seat is connected with the rack in a sliding mode along the second direction, and the power module is connected with the rack and the fixed seat and used for driving the fixed frame and the scraper unit to slide relative to the rack.

In one embodiment, the scraper unit comprises a first lifting module, a second lifting module, a third lifting module and a scraper which are connected in sequence;

the first lifting module is connected with the fixed seat and is used for driving the second lifting module, the third lifting module and the scraper to ascend or descend together;

the second lifting module is used for driving the third lifting module and the scraper to ascend or descend together;

the third lifting module is used for driving the scraper to ascend or descend.

In one embodiment, the substrate printing machine further comprises a power part and a cleaning mechanism which are connected, the power part is used for driving the cleaning mechanism to transversely move between the screen plate and the feeding mechanism, and the cleaning mechanism is used for cleaning preset materials at the bottom of the screen plate.

Compared with the prior art, the substrate segmentation printing machine provided by the invention at least has the following beneficial effects:

when the printing machine works, the feeding mechanism conveys a hard substrate, a first section of printing area of the hard substrate in the length direction can be vertically aligned with a mesh area on a screen plate, then the driving mechanism drives the screen plate to descend, the mesh area on the screen plate is enabled to be contacted with the top surface of the first section of printing area on the hard substrate, then the scraper mechanism scrapes a preset material into the mesh area, the preset material (such as tin paste) can be enabled to fall on the printing position (such as a welding pad) of the top surface of the substrate through the mesh area, after the printing operation of the first section of printing area is completed, the screen plate moves upwards under the driving of the driving mechanism, then the feeding mechanism drives the substrate to continue to move forwards, a second section of printing area of the substrate in the length direction can be vertically aligned with the mesh area on the screen plate, then the screen plate descends again under the driving of the driving mechanism, the mesh area on the screen plate is enabled to be contacted with the top surface of the second section of printing area of the substrate, the scraper mechanism scrapes the preset material into the mesh area again, the second section of printing area on the substrate is enabled to print the preset material, the second section of the substrate, the preset material can be printed on the substrate, the preset material can be sequentially circulated, and all the hard substrate in the length direction can be printed by the hard substrate under the driving of the feeding mechanism.

To sum up, adopt the technical scheme of this application, when realizing the printing function of the base plate of jumbo size and stereoplasm, the mesh size need not accomplish very big to be convenient for guarantee that the mesh region on the mesh has higher manufacturing accuracy, and then can satisfy the printing demand of jumbo size stereoplasm base plate with high printing accuracy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a substrate printer provided in this embodiment;

fig. 2 is a schematic structural diagram of the feeding mechanism provided in this embodiment;

fig. 3 is a schematic structural diagram of a mesh plate provided in this embodiment;

FIG. 4 is a schematic view of the structure of the net panel shown in FIG. 3 at another angle;

fig. 5 is a schematic structural diagram of the driving mechanism provided in this embodiment;

fig. 6 is a schematic structural diagram of the mounting frame and the net plate provided in this embodiment after being assembled;

FIG. 7 is an exploded view of the structure shown in FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 6 at A;

FIG. 9 is a partial enlarged view of FIG. 6 at B;

FIG. 10 is a schematic structural diagram of the scraper mechanism, the detection module and the cleaning mechanism provided in this embodiment mounted on a frame;

fig. 11 is an assembly structure diagram of the fixing base and two sets of scraper units provided by the embodiment;

fig. 12 is a front view of the structure shown in fig. 11.

Wherein, in the figures, the respective reference numerals:

1. a substrate printer; 11. a frame;

12. a screen plate; 121. an installation part; 122. a boss portion; 1221. a mesh area;

13. a drive mechanism;

131. a drive module; 1311. a motor; 1312. a first coupling; 1313. a first rotating shaft; 1314. a linkage assembly; 13141. a second coupling; 13142. a third coupling; 13143. a second rotating shaft;

132. a mounting frame; 1321. a frame; 1322. a movable frame; 1323. a drive assembly; 13231. a driver; 132311, a body; 132312, a telescoping member; 132313, rollers; 132314, a tension spring; 13232. a lock; 1324. tightly pushing the air cylinder;

133. a lifting executive component;

14. a scraper mechanism; 141. a power module; 142. a fixed seat; 143. a scraper unit; 1431. a first lifting module; 1432. a second lifting module; 1433. a third lifting module; 1434. a scraper;

15. a feeding mechanism; 151. a feeding device; 16. a detection module; 17. and (5) cleaning the mechanism.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be considered limiting to the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

In the following embodiments, the length direction of the substrate is represented by X-axis, and the width direction of the substrate is represented by Y-axis.

Referring to fig. 1, the present embodiment provides a substrate segment printing machine, which includes a frame 11, a screen 12, a driving mechanism 13, a scraper mechanism 14, and a feeding mechanism 15.

Referring to fig. 1 and fig. 2, the feeding mechanism 15 is mounted on the frame 11, and the feeding mechanism 15 is used for guiding the substrate to transport the substrate along the X-axis direction, and of course, the feeding mechanism 15 can also drive the substrate to transport along the X-axis direction. In the present embodiment, since the substrate span is long, the feeding mechanism 15 preferably includes two feeding devices 151 arranged in parallel, and each feeding device 151 can transport the substrate along the X-axis direction. Since the feeding device 151 for feeding the material is too conventional, it will not be described herein too much. The feeding device 151 may be an existing belt conveyor or an existing roller conveyor.

Referring again to fig. 1, the mesh plate 12 is positioned above the feeding mechanism 15. Referring to fig. 3, the screen 12 is provided with a mesh area 1221, the mesh area 1221 is provided with meshes (not shown), when the mesh area 1221 faces one of the printing areas on the substrate, each mesh in the mesh area 1221 is aligned with each printing position (e.g., pad) of the printing area to be printed on the substrate.

Specifically, referring to fig. 1 and 5, the driving mechanism 13 is connected to the frame 11 and the screen 12, the driving mechanism 13 is used for driving the screen 12 to ascend or descend relative to the frame 11, so that the mesh area 1221 on the screen 12 can contact with the top surface of the substrate on the feeding mechanism 15, and when the screen 12 contacts with the substrate on the feeding mechanism 15, the mesh area 1221 on the screen 12 is just opposite to the printing area to be printed on the substrate.

More specifically, referring to fig. 1, a squeegee mechanism 14 is connected to the frame 11, and the squeegee mechanism 14 is located above the screen 12, and the squeegee mechanism 14 is used to scrape the predetermined material into the mesh area 1221, so that the predetermined material can drop onto each printing position (e.g., pad) of the desired printing area on the circuit along the mesh in the mesh area 1221.

Further, referring to fig. 1, 3 and 4, the net plate 12 is designed in a step shape. Specifically, the step-shaped screen 12 specifically includes a mounting portion 121 and a protruding portion 122 connected to each other, where the mounting portion 121 is connected to the driving mechanism 13, the protruding portion 122 protrudes downward relative to the mounting portion 121, and the mesh area 1221 is disposed on the protruding portion 122, so that, when the screen 12 is driven by the driving mechanism 13 to contact with the top surface of the substrate on the feeding mechanism 15, only the protruding portion 122 provided with the mesh area 1221 contacts with the top surface of the substrate, neither the driving mechanism 13 nor the mounting portion 121 on the screen 12 contacts with the top surface of the substrate, and further, the driving mechanism 13 and the mounting portion 121 on the screen 12 do not contact with the printing area on which the substrate has been printed with the preset material, that is, by adopting the step-shaped screen 12 structure, it is possible to ensure that the printing area on the substrate printed with the preset material is not damaged, and reliability of the step-wise printing operation is improved.

The remaining mechanisms of the substrate printer 1 in the present embodiment will be described in detail below with reference to the drawings.

Referring to fig. 1, 5 and 6, the driving mechanism 13 includes a driving module 131, a mounting frame 132 and four lifting actuators 133. Wherein, the mounting frame 132 is used for mounting the mesh plate 12. The four lifting actuators 133 are connected to the mounting frame 132 and are used for driving the mounting frame 132 and the screen plate 12 to move up or down together, and the four lifting actuators 133 surround the periphery of the feeding mechanism 15 together, so that the mounting frame 132 and the screen plate 12 with a large span in the Y-axis direction can reliably move up or down. The driving module 131 is connected with the four lifting executing parts 133 and located below the feeding mechanism 15, and the driving module 131 is used for driving the four lifting executing parts 133 to execute synchronously, so that the problem of jamming of the mounting frame 132 and the screen plate 12 with large span in the Y-axis direction during ascending or descending can be avoided, and the reliability of the lifting movement of the mounting frame 132 and the screen plate 12 is further improved.

Referring again to fig. 5, the driving module 131 includes a motor 1311, a first shaft coupling 1312, two first rotating shafts 1313 and two linkage assemblies 1314. The two linkage assemblies 1314 further include a second coupling 13141, two third couplings 13142, and two second shafts 13143.

The specific connection relationship of the upper section is as follows: the motor 1311 is fixed on the frame 11, the first coupling 1312 is connected with an output shaft of the motor 1311, the first coupling 1312 is further connected with two first rotating shafts 1313, the second coupling 13141 in each linkage assembly 1314 is connected with two second rotating shafts 13143, one third coupling 13142 in each linkage assembly 1314 is connected with one second rotating shaft 13143, and the other third coupling 13142 in each linkage assembly 1314 is connected with the other second rotating shaft 13143. One of the first shafts 1313 connects to the second coupling 13141 in one of the linkage assemblies 1314 and the other of the first shafts 1313 connects to the second coupling 13141 in the other linkage assembly 1314.

Specifically, the first coupling 1312, the second coupling 13141 and the third coupling 13142 are all related art, the internal structures of the first coupling 1312, the second coupling 13141 and the third coupling 13142 are gear structures, and the first coupling 1312, the second coupling 13141 and the third coupling 13142 are used for changing the rotation direction of the main power or decomposing the main power into a plurality of powers. When the conveying shaft of the motor 1311 rotates, the first coupling 1312 can drive two first rotating shafts 1313 to rotate, and the rotation of the first rotating shafts 1313 drives a plurality of second rotating shafts 13143 to rotate through the second coupling 13141.

The lifting actuator 133 includes a rotating member (not shown) and a lifting member (not shown) that are screwed to each other, the lifting actuator 133 is the same as the internal structure of the conventional electric cylinder, the internal structure of the lifting actuator 133 can be understood as a lead screw module, and one of the rotating member and the lifting member is a lead screw and the other is a nut. When the screw rod rotates, the screw rod drives the nut to do lifting motion in the vertical direction; when the nut rotates, the nut drives the screw rod to do lifting motion in the vertical direction. The lifting member for lifting is connected to the mounting frame 132 to drive the mounting frame 132 and the screen plate 12 to lift in the vertical direction, and the rotating member in each lifting actuator 133 is connected to a corresponding third shaft coupler 13142, and the third shaft coupler 13142 is used to change the power direction of the second rotating shaft 13143, so that the power that rotates around the horizontal line is changed into the power that rotates around the vertical direction, and the lifting member can lift in the vertical direction. By adopting the driving module 131 of this embodiment, the lifting members in the four lifting actuators 133 can be lifted and lowered synchronously in the vertical direction.

Referring to fig. 6 to 9, the mounting frame 132 is further designed to include a frame 1321, a moving frame 1322 and a driving assembly 1323, in consideration that the mesh area 1221 of the screen 12 is not necessarily aligned with each printing position (e.g., pad) of the printing area on the substrate.

The moving frame 1322 is used for fixing the screen plate 12, the moving frame 1322 is movably connected to the frame 1321, the driving assembly 1323 is connected to the frame 1321 and the moving frame 1322, and the driving assembly 1323 is used for driving the moving frame 1322 to move in a plane relative to the frame 1321, so that the screen plate 12 can move in a plane, and thus the mesh area 1221 on the screen plate 12 can be aligned with each pad of the printing area on the substrate. The frame 1321 is connected to the four lifting actuators 133, and when the lifting actuators 133 drive the frame 1321 to move up and down, the screen 12 also moves up and down along with the frame 1321. In addition, in order to facilitate the replacement of different screen plates 12, a plurality of jacking cylinders 1324 are further arranged on the moving frame 1322, the plurality of jacking cylinders 1324 are used for jacking the edges of the screen plates 12, so that the screen plates 12 can be fastened with the moving frame 1322 into a whole, when the screen plates 12 need to be replaced, the jacking cylinders 1324 can be in a contraction state, and at the moment, the screen plates 12 can be easily taken out from the moving frame 1322.

Since the scraper mechanism 14 is provided above the screen plate 12, and no shielding object is provided below the screen plate 12, so that the screen plate 12 can abut against the top surface of the substrate on the feeding mechanism 15 after being lowered, the driving assembly 1323 cannot be arranged above the screen plate 12, the driving assembly 1323 cannot be arranged below the screen plate 12, the driving assembly 1323 can be arranged only on the periphery of the moving frame 1322, and meanwhile, the driving assembly 1323 is also arranged on the periphery of the screen plate 12. Specifically, the driving assembly 1323 includes three drivers 13231 and a plurality of latches 13232, which are respectively mounted on the frame 1321. The three drivers 13231 are respectively abutted on the outer side wall of the moving frame 1322, three position points of the three drivers 13231 abutted on the moving frame 1322 are not collinear, according to the principle that three points determine a plane, the three drivers 13231 can drive the moving frame 1322 to move to any position in the plane, and can drive the moving frame 1322 to perform posture adjustment, and after the position of the moving frame 1322 is adjusted to a certain position, the moving frame 1322 is locked by the locking device 13232 to limit the moving frame 1322 to move relative to the frame 1321, so that the moving frame 1322 is ensured not to be deviated relative to the frame 1321 in a subsequent printing process.

Each driver 13231, in turn, comprises a body 132311, a telescopic element 132312, a roller 132313 and two tension springs 132314. The main body 132311 is installed on the frame 1321, the telescopic component 132312 is connected to the main body 132311, the main body 132311 is used for driving the telescopic component 132312 to make reciprocating linear motion, the structure that the main body 132311 and the telescopic component 132312 jointly form is the same as the internal structure of the existing electric cylinder, the roller 132313 is installed on one end of the telescopic component 132312 far away from the main body 132311, the roller 132313 can rotate freely relative to the telescopic component 132312, one end of each of two tension springs 132314 is hooked on the shifting frame 1322 and is fixed relative to the shifting frame 1322, the other end of each of two tension springs 132314 is hooked on the main body 132311 and is fixed relative to the main body 132311, and due to the acting force of the tension springs 132314, the outer side surface of the shifting frame is always abutted against the roller 132313. In this embodiment, the extending and retracting directions of two of the telescopic members 132312 are preferably the same as the X-axis direction, and the extending and retracting direction of the other telescopic member 132312 is preferably the same as the Y-axis direction.

Wherein the latch 13232 comprises a preferably air bag. When the gas is injected into the locker 13232, the locker 13232 is expanded, thereby fixing the frame 1321 and the moving frame 1322 as one body. When the latch 13232 is released, the driving assembly 1323 can drive the moving frame 1322 to move relative to the frame 1321.

Referring to fig. 1 and 10 together, the substrate printing machine 1 further includes a detection module 16 and a driving member (not shown), wherein the driving member is preferably mounted on the frame 11, the detection module 16 is preferably slidably connected to the frame 11 in the Y-axis direction, the detection module 16 is located at a position higher than the height position of the feeding mechanism 15 but lower than the height position of the screen 12, the driving member is used for driving the detection module 16 to move in the area between the screen 12 and the feeding mechanism 15, the detection module 16 is a conventional art, the detection module 16 is used for taking a picture upwards to obtain the position information of the mesh area 1221 on the screen 12, the detection module 16 is also used for taking a picture downwards to obtain the position information of the printing area on the substrate located on the feeding mechanism 15, the position information of the screen 12 required to move is calculated by the background system, the background system feeds the position information of the screen 12 required to move back to the driving assembly 1323, and the driving assembly 1323 drives the moving frame and the screen 12 to move together, so that the mesh area 1221 on the substrate 12 can be aligned with the printing area required to be printed on the substrate, thereby reliably printing area on each screen.

In other embodiments, the driving member may not be connected to the frame 11, and the detecting module 16 may be slidably connected to the frame 11 in the Y-axis direction, for example: the driving component is a robot hand arranged on the ground, and the driving component drives the detection module 16 to extend between the screen plate 12 and the feeding mechanism 15, so that the position information of the screen plate 12 and the position information of a printing area required by the substrate can be obtained.

In the prior art, the scraper mechanism 14 moves up and down synchronously with the screen plate 12, but in this embodiment, because the spans of the screen plate 12 and the driving mechanism 13 are large, the weights of the screen plate 12 and the driving mechanism 13 are large, and if the scraper mechanism 14 is set to move up and down together with the screen plate 12, the driving mechanism 13 will bear the weights of the screen plate 12 and the scraper mechanism 14, and the reliability of the driving mechanism 13 will be poor. Accordingly, new improvements to the doctor mechanism 14 are needed in this embodiment.

Referring to fig. 1 and fig. 10 to 12, the scraper mechanism 14 includes a power module 141, a fixing base 142, and at least one scraper unit 143. Since the present embodiment requires that the screen plate 12 be respectively scraped with the predetermined material in the left and right directions, the number of the scraper units 143 is two. Specifically, the scraper units 143 are mounted on the fixing base 142, the power module 141 is connected to the frame 11 and the fixing base 142, the power module 141 is configured to drive the fixing base 142 and the two scraper units 143 to integrally reciprocate in the Y-axis direction, one of the scraper units 143 is configured to scrape solder paste to the left, and the other scraper unit 143 is configured to scrape solder paste to the right. With the scraper mechanism 14 of this structure, the driving mechanism 13 is no longer subjected to the weight of the scraper mechanism 14, so that the driving mechanism 13 can reliably drive the screen plate 12 to move up and down. In this embodiment, the power module 141 is preferably a timing belt module with a long transmission stroke, and in other embodiments, the power module 141 may also be a screw module or a linear motor.

More specifically, referring to fig. 1 and fig. 10 to 12 again, each of the scraper units 143 includes a first lifting module 1431, a second lifting module 1432, a third lifting module 1433, and a scraper 1434, which are connected in sequence. Wherein, first lift module 1431 is installed on fixing base 142, first lift module 1431 is used for driving second lift module 1432, third lift module 1433 and scraper 1434 are whole to make quick elevating movement in vertical direction, make scraper 1434 be close to otter board 12 downwards rapidly, second lift module 1432 is used for driving third lift module 1433 and scraper 1434 are whole to make slow elevating movement in vertical direction, make scraper 1434 be close to otter board 12 gradually with slow mode, and then avoid scraper 1434 to take place because the phenomenon that the descending speed is too fast and puncture otter board 12. The third lifting module 1433 is used to drive the scraper 1434 to move up and down in a vertical direction, so that the scraper 1434 can move downward and contact with the top surface of the screen plate 12, and when the scraper 1434 moves in a positive direction or a negative direction of the Y-axis under the driving of the power module 141, the scraper 1434 can scrape the solder paste into the mesh area 1221 of the screen plate 12.

The first lifting module 1431 and the second lifting module 1432 are preferably screw modules with high motion precision, and of course, the first lifting module 1431 and the second lifting module 1432 may be a synchronous belt module or a linear motor. The third lifting module 1433 is preferably a cylinder.

Referring to fig. 1 and 10 together, the substrate printing machine 1 further includes a cleaning mechanism 17 and a power member (not shown in the figures), the power member is connected to the cleaning mechanism 17, the cleaning mechanism 17 is slidably connected to the frame 11 in the Y-axis direction, the cleaning mechanism 17 is located at a height position lower than the position of the screen 12 but higher than the position of the feeding mechanism 15, the power member is used for driving the cleaning mechanism 17 to move transversely between the screen 12 and the feeding mechanism 15, so that the cleaning mechanism 17 can clean the solder paste at the bottom of the screen 12, the cleaning mechanism 17 is a prior art in the field, and has a pressing plate and a cleaning paper, the pressing plate drives the cleaning paper to be attached to the bottom of the screen 12, and the power member drives the cleaning mechanism 17 to move linearly in the Y-axis direction, so that the screen 12 can be used for the next cycle of printing operation.

To sum up, by adopting the technical scheme of the application, while realizing the printing function of the hard substrate with large length, the size of the screen 12 does not need to be very large, thereby being convenient for ensuring that the mesh area 1221 on the screen 12 has higher manufacturing precision, and further being capable of meeting the printing requirement of the hard substrate with large size with high printing precision.

The foregoing is considered as illustrative only of the preferred embodiments of the invention, and is presented merely for purposes of illustration and description of the principles of the invention and is not intended to limit the scope of the invention in any way. Any modifications, equivalents and improvements made within the spirit and principles of the invention and other embodiments of the invention without the exercise of inventive faculty will be appreciated by those skilled in the art and are intended to be included within the scope of the invention.

Claims

1. A substrate segment printing machine is characterized by comprising a rack, a screen plate, a driving mechanism, a scraper mechanism and a feeding mechanism;

the feeding mechanism is connected with the rack and is used for conveying the substrate, so that a printing area needing to be printed on the substrate in the length direction can be opposite to the screen;

the scraper mechanism is connected with the frame and located above the screen plate and used for scraping preset materials into the mesh area, so that the preset materials are printed on the substrate in a range contacting with the mesh area.

2. The substrate segment printing press of claim 1, wherein the stencil includes a mounting portion and a raised portion connected thereto, the mesh region being disposed on the raised portion, the mounting portion being connected to the drive mechanism, the raised portion being downwardly raised relative to the mounting portion.

3. The substrate segment printing press of claim 1, wherein the drive mechanism includes a drive module, a mounting frame, and four lift actuators;

the mounting frame is connected with the screen plate, the four lifting executing pieces are connected with the mounting frame and are arranged around the feeding mechanism in a surrounding mode, and the lifting executing pieces are used for driving the mounting frame and the screen plate to ascend or descend together;

4. The substrate segmentation printer of claim 3, wherein the lift actuator comprises a threaded rotating member and a lifting member; the lifting member is connected with the mounting frame;

the linkage assembly comprises a second coupler, two third couplers and two second rotating shafts, one of the second rotating shafts is connected with the second coupler and one of the third couplers, the other of the second rotating shafts is connected with the second coupler and the other of the third couplers, and the third coupler is connected with the rotating piece;

5. The substrate segmentation printer of claim 3, wherein the mounting frame comprises a frame, a moving frame, and a drive assembly;

the driving assembly is connected with the frame and the moving frame and is positioned on the periphery of the screen plate and used for driving the moving frame to move in a plane relative to the frame, so that a mesh area on the screen plate connected to the moving frame can be aligned with a pad area on a substrate positioned on the feeding mechanism, wherein the pad area needs to be printed with a preset material.

6. The substrate segment printing machine of claim 5, wherein the driving assembly comprises three drivers, the drivers are connected with the frame and the movable frame, the drivers have a telescopic deformation characteristic, the three drivers respectively abut against the outer side wall of the movable frame, and three positions of the three drivers abutting against the movable frame are not collinear.

7. The substrate segment printing press of claim 5, further comprising a driving member and a detection module connected to the driving member, wherein the driving member is configured to drive the detection module to move between the screen and the feeding mechanism, the detection module is configured to obtain position information of the mesh area and position information of a printing area on the substrate on the feeding mechanism, and the detection module is in signal connection with the driving assembly.

8. The substrate segment printing press of claim 1, wherein the squeegee mechanism includes a power module, a holder, and at least one squeegee unit coupled to the holder;

9. The substrate segment printing machine of claim 8, wherein the squeegee unit comprises a first lift module, a second lift module, a third lift module, and a squeegee connected in series;

the third lifting module is used for driving the scraper to ascend or descend.

10. The substrate web-fed segment printing press of any one of claims 1 to 9, further comprising a power member and a cleaning mechanism coupled thereto, the power member for driving the cleaning mechanism to move laterally between the screen and the feeding mechanism, the cleaning mechanism for cleaning a predetermined material located at a bottom of the mesh zone.