CN219769371U - Screen printing module - Google Patents

Abstract

The utility model discloses a screen printing module, which belongs to the technical field of screen printing and comprises a scraper component, a screen plate component, a scraper driving component and a screen plate fixing component, wherein the screen plate component is accurately adjusted in the XY theta direction by utilizing the corresponding arrangement of a fixing plate, an adjusting plate and a first displacement component between two plate bodies in a screen plate precision adjusting component and combining the design of each displacement unit structure in the first displacement component, so that the precision of the screen plate component in arrangement and use is ensured. The screen printing module is compact in structure and convenient to control, can realize screen printing of the battery piece, ensures reliability and precision of the screen assembly position in the printing process, ensures precision of the screen printing process of the battery piece, improves efficiency and quality of screen printing of the battery piece of the photovoltaic assembly, and has good practical value and application prospect.

Description

Screen printing module

Technical Field

The utility model belongs to the technical field of screen printing, and particularly relates to a screen printing module.

Background

Along with the continuous development of the photovoltaic industry in China, the demand for photovoltaic products is higher and higher, the types of photovoltaic module production are more and more, and the iteration period of the products is also continuously shortened.

In recent years, in order to reduce the cost of the battery assembly, the power generation and attenuation performance of the battery module are improved, so that half-cell technology is rapidly developed. The reduced series resistance and increased fill factor FF of the half-cell photovoltaic modules compared to conventional full-cell modules results in a half-cell photovoltaic module having the same efficiency with significantly higher output power than conventional full-cell modules. In addition, the internal resistance of the half-cell photovoltaic module is lower, so that the temperature in the power generation process is lower than that of a conventional full-cell module, and the power generation capacity of the module is further improved.

As such, more and more manufacturers are beginning to work on and develop half-cell photovoltaic modules. However, due to a certain difference between the structural form and the conventional full-cell module, the screen assembly designed for the full-cell module in the prior art is difficult to be suitable for printing and preparing the half-cell module, and the production and application of the half-cell photovoltaic module are limited to a certain extent.

Disclosure of Invention

Aiming at one or more of the defects or improvement demands of the prior art, the utility model provides a screen printing module which can realize screen printing of a half-cell photovoltaic module, ensure the accuracy of the screen position in the screen printing process and improve the efficiency and quality of screen printing of the half-cell photovoltaic module.

To achieve the above object, the present utility model provides a doctor assembly and a screen assembly; the scraper assembly is assembled and arranged on the scraper driving assembly, a screen fixing assembly is arranged corresponding to the screen assembly, the screen assembly is fixed below the scraper assembly by the screen fixing assembly, and the screen assembly further comprises a screen precision adjusting assembly;

the screen precision adjusting assembly comprises a fixed plate and an adjusting plate which are oppositely arranged in the Z direction, wherein the plate bodies of the fixed plate and the adjusting plate are connected through a first displacement assembly, and the plate bodies of the fixed plate and the adjusting plate are respectively provided with a clearance hole for the scraper assembly to pass through; and is also provided with

The first displacement assembly comprises a first displacement unit, a second displacement unit and a third displacement unit which are circumferentially arranged at intervals outside the avoidance hole, and the axes of the three displacement units are positioned on the same circle; the driving units are respectively arranged corresponding to the displacement units, wherein the driving directions of the two driving units are parallel and perpendicular to the driving direction of the other driving unit, and the two driving units with the parallel driving directions are respectively arranged at two sides of the scraper component;

the displacement unit comprises a top moving plate, a driving mounting plate and a bottom moving plate which are sequentially arranged in the Z direction; the top moving plate is fixedly connected with the fixed plate, and the bottom moving plate is rotationally connected with the adjusting plate; the driving mounting plate is connected with an output shaft of a corresponding driving unit, is assembled with a first guide rail of which the movement direction is parallel to the axial direction of the output shaft between the driving mounting plate and the top moving plate, and is assembled with a second guide rail of which the movement direction is perpendicular to the axial direction of the output shaft between the driving mounting plate and the bottom moving plate;

the driving unit is fixedly arranged on the fixing plate.

As a further improvement of the present utility model, two driving units with parallel driving directions are used for driving the first displacement unit and the second displacement unit, respectively, and the driving directions of the two driving units are along the Y direction and are arranged at intervals in the X direction.

As a further improvement of the utility model, the length of the clearance hole in the Y direction is longer than that in the X direction; the length of the fixing plate in the Y direction is greater than that of the adjusting plate in the X direction.

As a further improvement of the utility model, the fixing plate is a U-shaped plate, and the adjusting plate is a rectangular square frame plate;

the first displacement unit and the second displacement unit are respectively arranged between the supporting part of the U-shaped plate and the adjusting plate, and the third displacement unit is arranged between the connecting part of the U-shaped plate and the adjusting plate.

As a further improvement of the present utility model, the driving direction of the blade driving assembly is the Y direction.

As a further improvement of the utility model, the connection lines of the centers of the three displacement units form an isosceles triangle or an equilateral triangle.

As a further improvement of the utility model, a second displacement assembly is also included;

the second displacement assembly comprises at least one follow-up displacement unit; the structure of the follow-up displacement units is the same as that of the displacement units in the first displacement assembly, and the centers of the follow-up displacement units and the centers of the displacement units in the first displacement assembly are positioned on the same circle.

As a further improvement of the utility model, the follow-up displacement unit is arranged between the first displacement unit and the third displacement unit and/or between the second displacement unit and the third displacement unit.

As a further development of the utility model, a detection assembly is provided for at least one displacement unit of the first displacement assembly for detecting the movement displacement of the at least one displacement unit in the corresponding direction in real time.

As a further improvement of the utility model, the screen plate fixing assembly comprises a fixed clamping plate and a movable clamping plate which are arranged on one side of the adjusting plate, which is away from the fixed plate;

the fixed clamping plate and the movable clamping plate are oppositely arranged in the X direction, the fixed clamping plate is fixedly connected with the adjusting plate, and the movable clamping plate is movably connected with the adjusting plate; and a clamping assembly is arranged corresponding to the movable clamping plate and used for driving the movable clamping plate to be close to or far away from the fixed clamping plate.

The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.

In general, the above technical solutions conceived by the present utility model have the beneficial effects compared with the prior art including:

(1) The screen printing module comprises a scraper component, a screen plate component, a scraper driving component and a screen plate fixing component, and by utilizing the corresponding arrangement of a fixed plate, an adjusting plate and a first displacement component between two plate bodies in the screen plate precision adjusting component and combining the design of each displacement unit structure in the first displacement component, the displacement adjustment of the screen plate component in the XY theta direction can be accurately realized, the setting and use precision of the screen plate component is ensured, and the efficiency and quality of screen printing are improved.

(2) According to the screen printing module, through optimizing the setting positions of the displacement units in the first displacement assembly, the displacement assemblies with the same driving direction as the working direction of the scraper assembly are arranged on the two sides of the scraper assembly at the same time, so that the displacement of the screen assembly caused by the working of the scraper assembly can be compensated in time by the driving units of the two displacement units, and the setting and working precision of the screen assembly is further improved.

(3) According to the screen printing module, the second displacement assembly is arranged between the fixed plate and the adjusting plate, and the adjustment precision of the screen printing module is ensured, meanwhile, the connection rigidity of the fixed plate and the adjusting plate is further improved, and the displacement adjustment precision of the adjusting plate relative to the fixed plate is ensured by utilizing the optimization of the arrangement positions of each follow-up displacement unit in the second displacement assembly and each displacement unit in the first displacement assembly, namely, the centers of the displacement units are positioned on the same circle.

(4) According to the screen printing module, the screen in-place component and the screen positioning component are correspondingly arranged on the screen precision adjusting component, so that X-direction positioning and Y-direction positioning in the screen component arranging process can be realized, and the setting precision of the screen component is ensured; meanwhile, the detection assemblies are respectively arranged for the displacement units in the first displacement assembly, so that the displacement distance of each displacement unit can be accurately obtained by the detection assemblies, an accurate basis is provided for displacement compensation of the driving unit, and the setting and using precision of the screen assembly is further improved.

(5) The screen printing module is compact in structure and convenient to control, can realize screen printing of the battery piece, ensures reliability and precision of the screen assembly position in the printing process, ensures precision of the screen printing process of the battery piece, improves efficiency and quality of screen printing of the battery piece of the photovoltaic assembly, and has good practical value and application prospect.

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, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the overall structure of a screen printing module according to an embodiment of the utility model;

FIG. 2 is a bottom view of a screen printing module according to an embodiment of the utility model;

FIG. 3 is a schematic diagram of a screen assembly of a screen printing module according to one embodiment of the utility model;

FIG. 4 is a schematic diagram of a screen assembly according to an embodiment of the present utility model when the screen assembly is disposed on the screen precision adjusting assembly;

FIG. 5 is a schematic view of an arrangement of a first displacement assembly and a second displacement assembly in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a displacement unit according to an embodiment of the present utility model;

like reference numerals denote like technical features throughout the drawings, in particular:

100. a screen plate fixing assembly; 200. a screen assembly; 300. a screen precision adjusting component; 400. a doctor blade drive assembly; 500. a scraper assembly; 600. a clearance hole;

101. a fixed clamping plate; 102. a movable clamping plate; 110. a screen to bit assembly; 120. a screen positioning assembly; 121. a positioning pin; 122. a clamping assembly; 130. a screen compacting assembly;

201. a screen printing plate; 202. a screen plate fixing plate;

301. a fixing plate; 302. an adjustment plate; 310. a first displacement assembly; 3101. a first displacement unit; 3102. a second displacement unit; 3103. a third displacement unit; 311. a top moving plate; 312. a first guide rail; 313. a drive mounting plate; 314. a bearing; 315. a bottom moving plate; 316. a second guide rail; 320. a drive assembly; 3201. a first driving unit; 3202. a second driving unit; 3203. a third driving unit; 330. a second displacement assembly; 340. and a detection assembly.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples:

as shown in fig. 1 to 6, the screen printing module according to the preferred embodiment of the utility model includes a screen fixing assembly 100, a screen assembly 200, a screen precision adjusting assembly 300, a doctor driving assembly 400, and a doctor assembly 500.

The screen assembly 200 is fixed by the screen fixing assembly 100, and a station (printing station) for placing the battery piece to be printed is arranged below the screen assembly 200. Meanwhile, during fixing and/or printing of the screen assembly 200, the screen precision adjusting assembly 300 can adjust the position of the screen assembly 200, so that the screen assembly 200 corresponds to the position of the battery piece on the printing station, specifically, the screen 201 corresponds to the position of the battery piece, and the position precision of the screen assembly 200 relative to the battery piece to be processed and the screen printing precision are ensured. In addition, the doctor assembly 500 in the preferred embodiment is disposed corresponding to the fixed screen assembly 200 and is driven by the doctor driving assembly 400 to move along the screen 201, and the paste on the screen 201 is scraped onto the battery to be printed, so as to complete the screen printing process of the corresponding product (battery to be printed).

In order to realize the adjustment of the position of the screen assembly 200 in the setting process and/or the working process, the screen precision adjusting assembly 300 is correspondingly arranged, and the screen assembly 200 is driven to adjust in the xyθ direction according to the position of the battery piece to be printed, namely, translational adjustment and rotational adjustment in the orthogonal direction in the horizontal plane are performed, so that the screen 201 corresponds to the position of the battery piece. The screen assembly 200 is fixed to the screen precision adjusting assembly 300 by the screen fixing assembly 100.

Correspondingly, the screen plate fixing assembly 100 and the screen plate precision adjusting assembly 300 are connected in a matched mode, so that after the screen plate assembly 200 is fixed by the screen plate fixing assembly 100, the screen plate precision adjusting assembly 300 can adjust the position, and the battery piece to be printed can be kept corresponding to a certain precision range.

Specifically, the screen precision adjusting assembly 300 in the preferred embodiment includes a fixed plate 301 and an adjusting plate 302 that are disposed at intervals in the Z-direction (vertical direction as shown in fig. 4). The relative position between the fixing plate 301 and the station to be printed is relatively fixed, specifically, it is fixed above the printing station. The doctor blade drive assembly 400 and the mating doctor blade assembly 500 are mounted to the mounting plate 301. Meanwhile, the adjusting plate 302 is connected with the fixing plate 301 by a displacement assembly, and displacement adjustment in the xyθ direction can be performed under the driving of the displacement assembly. The screen assembly 200 is fixed on the adjusting plate 302, and is driven by the adjusting plate to adjust displacement in the XY theta direction, so that alignment with the solar cell to be printed is realized.

In more detail, the middle portions of the fixing plate 301 and the adjusting plate 302 in the preferred embodiment are respectively provided with a clearance hole 600, and the clearance hole 600 is further preferably rectangular, and the adjusting plate 302 forms a rectangular block structure as shown in fig. 5. Accordingly, the fixing plate 301 in the preferred embodiment may be provided in the rectangular block structure described above, but it may be provided in other forms, such as a U-shaped plate structure shown in fig. 4, in which the U-shaped plate (fixing plate 301) and the block plate (adjusting plate 302) are disposed opposite to each other in the Z-direction, and are connected with a displacement assembly therebetween.

In order to accommodate the printing of half solar cells, the Y-direction length of the clearance hole 600 is greater than the X-direction length. Correspondingly, the lengths of the fixing plate 301 and the adjusting plate 302 in the Y direction are larger than those in the X direction.

Of course, those skilled in the art will appreciate that the size of the clearance hole 600 is set according to the size of the screen 201 and is generally slightly larger than the size of the screen 201.

In a preferred embodiment, the displacement assembly includes a plurality of first displacement assemblies 310 spaced circumferentially outside the clearance hole 600, such as the three shown in FIG. 5. Wherein the plurality of first displacement assemblies 310 include first displacement units 3101 and second displacement units 3102 that are disposed at intervals in the X direction, and the two displacement units are respectively connected to two branches of the fixed plate 301 that extend in the Y direction; correspondingly, the fixing plate 301 further comprises a third displacement unit 3103 on a connecting portion of the fixing plate 301 along the X direction, two ends of the connecting portion are respectively connected with one ends of the two branch portions, and the fixing plate 301 forms a U-shaped plate structure. In actual arrangement, the connection portion extends in the X direction, and the third displacement unit 3103 is preferably connected in the middle of the connection portion, as shown in fig. 5.

The above description is given taking the fixing plate 301 as an example of the U-shape, the present utility model is not limited thereto, and the fixing plate 301 may be a rectangular square frame plate, for example, where the first displacement unit 3101 and the second displacement unit 3202 are disposed on a long side of the rectangular square frame fixing plate 301 along the Y direction, and the third displacement unit 3103 is disposed on a short side along the X direction.

Further, the driving unit 320, that is, the first driving unit 3201 provided corresponding to the first displacement unit 3101, the second driving unit 3202 provided corresponding to the second displacement unit 3102, and the third driving unit 3203 provided corresponding to the third displacement unit 3103 are provided corresponding to each displacement unit, respectively. The driving directions of the first driving unit 3201 and the second driving unit 3202 are parallel, and both the driving directions are driven along the Y direction, and the driving direction of the third driving unit 3203 is perpendicular to the driving directions of the other two driving units, and the driving directions are driven along the X direction.

In the preferred embodiment, each displacement unit has the same structural form, as shown in fig. 6, and includes a top moving plate 311, a driving mounting plate 313 and a bottom moving plate 315 which are stacked, wherein a guide rail extending along a first direction, that is, a first guide rail 312 is provided between the top moving plate 311 and the driving mounting plate 313, and a guide rail extending along a second direction, that is, a second guide rail 316 is provided between the driving mounting plate 313 and the bottom moving plate 315, and the first direction is perpendicular to the second direction, so that the two moving plates of the displacement unit can perform relative movement in an orthogonal direction with respect to the driving mounting plate 313.

In more detail, the bottom moving plate 315 is in a preferred embodiment rotatably connected to the adjustment plate 302 at a side facing away from the drive mounting plate 313 to correspond to the rotational adjustment of the displacement unit. In a preferred embodiment, a bearing 314 is coaxially provided on the end surface of the bottom moving plate 315, and the rotational connection between the bottom moving plate 315 and the adjustment plate 302 is accomplished by the bearing 314.

In actual setting, the displacement unit is disposed between the fixing plate 301 and the adjusting plate 302, and its setting form is specifically: the top moving plate 311 is connected to the fixed plate 301, the bearing 314 is connected to the adjustment plate 302, and the drive mounting plate 313 is connected to the output shaft of the corresponding drive unit.

The first, second and third drive units 3201, 3202 and 3203 are fixedly connected to the fixed plate 301, and drive ends (output shafts) thereof are freely disposed between the fixed plate 301 and the adjustment plate 302, and the drive mounting plates 313 of the corresponding displacement units are fixed. Taking the first driving unit 3201 in fig. 5 as an example, the first displacement unit 3101 is driven.

The driving direction of the first driving unit 3201 extends along the Y direction, the end of the output shaft of the first driving unit 3201 is connected to the driving mounting plate 313 of the first displacement unit 3101, at this time, the first guide rail 312 of the first displacement unit 3101 extends along the Y direction, so that the first driving unit 3201 can drive the driving mounting plate 313 to reciprocate along the Y direction, and accordingly, the bottom moving plate 315 connected below the driving mounting plate 313 and the adjusting plate 302 connected with the bottom moving plate 315 through the bearing 314 reciprocate along the Y direction along with the driving mounting plate 313.

In actual control, the control process of the second driving unit 3202 is the same as that of the first driving unit 3201, and thus will not be described herein.

Accordingly, the driving direction of the third driving unit 3203 is the X direction, and at this time, the third displacement unit 3103 is rotated by 90 ° relative to the other two displacement units, that is, the moving direction of the first rail 312 is the X direction. At this time, when the other two displacement units are driven and reciprocate in the Y direction, the drive mounting plate 313 in the third displacement unit 3103 makes a following movement under the guidance of the second guide rail 316 thereof. Accordingly, when the third driving unit 3203 operates, it drives the driving mounting plate 313 of the third displacement unit 3103 to move in the X direction under the guidance of the first guide rail 312; correspondingly, the drive mounting plates 313 in the other two displacement units follow in the X direction under the guidance of the respective second guide rail 316.

In addition, when three driving units in the driving assembly 320 work simultaneously, the adjusting plate 302 can drive the screen assembly 200 fixed below the driving unit to rotate angularly.

It is further preferred that in order to increase the rigidity of the connection between the fixed plate 301 and the adjustment plate 302, a second displacement assembly 330 is also provided therebetween, which preferably comprises two follow-up displacement units, namely one provided on the side of the first drive unit 3201 facing away from the first displacement unit 3101 and one provided on the side of the second drive unit 3202 facing away from the second displacement unit 3102 as shown in fig. 5.

In actual setting, the structure of the follow-up displacement units is the same as that of each displacement unit in the first displacement assembly 330, except that the driving unit is not provided thereto.

In addition, in order to ensure the precision of the operation after each displacement unit in the first displacement unit 310 and the second displacement unit 330 is arranged, in the preferred embodiment, the axes of each displacement unit are arranged on the same circle or approximately on a circle, so as to ensure the interference caused by different strokes in the XY directions corresponding to the deflection of the same angle after each displacement unit is arranged. Accordingly, in the subsequent rotation control, the center of the circle is the rotation center of the adjustment plate 302.

In actual arrangement, the central lines of the three displacement units in the first displacement assembly 310 are isosceles triangles, and more preferably, equilateral triangles. By such arrangement, the adjustment center of the composition can be ensured to be approximately near the center of the screen plate, and better adjustment can be achieved.

Further, as shown in fig. 2, the screen fixing assembly 100 in the preferred embodiment includes two clamping plates disposed in pairs on a side of the adjusting plate 302 facing away from the fixing plate 301, the two clamping plates respectively extend along the Y direction and are disposed opposite to each other in the X direction, so that the screen assembly 200 can be clamped and fixed on both sides along the X direction.

In more detail, the two clamping plates of the screen fixing assembly 100 in the preferred embodiment include a fixed clamping plate 101 and a movable clamping plate 102, and a clamping assembly 122 is provided corresponding to the movable clamping plate 102. The output shaft of the clamping assembly 122 extends along the X direction, and drives the movable clamping plate 102 to reciprocate along the X direction, close to or far from the fixed clamping plate 101, so as to clamp the screen assembly 200 in the X direction.

In a preferred embodiment, the clamping assembly 122 is further preferably a cylinder.

In actual setting, one end face of each clamping plate is opposite to the end face of the adjusting plate 302, and the distance between the two end faces is larger than the thickness of the screen assembly 200, so that the screen assembly 200 can be correspondingly embedded between the clamping plate and the adjusting plate 302, and the setting of the screen assembly 200 on the screen precision adjusting assembly 300 is completed.

Further, a screen pressing assembly 130 is further disposed between the two clamping plates, and is disposed on a side of the adjusting plate 302 facing away from the fixing plate 301, and can reciprocate along the Z direction, so as to press the screen assembly 200 embedded between the two clamping plates on the end surfaces of the two clamping plates facing the adjusting plate 302.

More specifically, the screen assembly 200 is further provided with a screen-to-bit assembly 110 on the adjusting plate 302, so as to determine the accuracy of the screen assembly 200 set in the Y direction when the screen assembly 200 is inserted in place in the Y direction. In practice, halftone to bit location component 110 may signal the presence of halftone component 200 after it is in place. Meanwhile, a positioning pin 121 is correspondingly arranged on the fixed overtime 101, and is combined with the clamping assembly 122 to form a screen positioning assembly 120 for positioning the screen assembly 200 in the X direction.

With the arrangement of the screen-to-bit assembly 110 and the screen positioning assembly 120, the accuracy with which the screen assembly 200 is arranged on the adjustment plate 302 can be achieved. At the same time, with the clamping assembly 122 in operation, lateral clamping force can be provided to the screen assembly 200 to ensure that it does not shift during printing due to displacement of the doctor assembly 500, further ensuring accuracy of printing. Accordingly, the screen pressing assembly 130 is preferably a cylinder assembly that protrudes in the Z direction from above the screen assembly 200 to provide a pressing force to the screen assembly 200.

In more detail, in the actual setting, the screen assembly 200 includes the screen fixing plate 202 and the screen 201 disposed at one side of the screen fixing plate 202, and the positioning accuracy of the screen 201 and the screen assembly 200 can be ensured by positioning the screen fixing plate 202.

Further, the doctor driving assembly 400 in the preferred embodiment is disposed on a side of the fixing plate 301 away from the adjusting plate 302, and includes a sliding rail extending along the Y direction and a driving mechanism, where the doctor assembly 500 is assembled on the sliding rail through a sliding block, and the driving mechanism is connected with the sliding block in a matching manner, so as to drive the doctor assembly to reciprocate along the extending direction of the sliding rail. In a preferred embodiment, the drive mechanism is preferably a cylinder; of course, according to actual needs, the device can also be set as a linear motor or other driving mechanisms, and the combined setting form of the sliding block and the sliding rail can also be replaced by a lead screw transmission form according to needs, which is not described herein.

In a preferred embodiment, the first drive unit 3201 and the second drive unit 3202 are disposed on both sides of the doctor assembly 500 in the X direction, and the respective working directions are identical. Such a directional arrangement may enable the drive assembly 320 to provide a driving force on both sides of the printing direction, reducing the impact of the doctor assembly 500 on the positional accuracy of the screen assembly 200 during operation.

Further specifically, a Z-direction driving mechanism capable of reciprocating along a Z-direction (vertical direction shown in fig. 1) is further disposed between the slider and the doctor assembly 500, so as to drive the doctor assembly 500 in the Z-direction, and control that the doctor approaches or departs from the screen assembly 200 along the Z-direction is implemented, which is a relatively mature technology, and will not be described herein.

In addition, in order to accommodate printing of half-cell batteries, the doctor blade driving assembly 400 in the preferred embodiment is disposed in the Y direction of the fixing plate 301 of the screen precision adjusting assembly 300 for driving the doctor blade assembly 500 to move in the Y direction to achieve paste printing.

More specifically, for each drive unit in the preferred embodiment, it is further preferred that it is a linear motor, which is further preferred that it is fixed on the fixed plate 301.

Preferably, in a preferred embodiment, a detection assembly 340 is provided corresponding to at least one displacement unit in the first displacement assemblies 310, for detecting the movement displacement of the displacement unit in the corresponding direction in real time, so as to ensure the accuracy of the displacement of each first displacement assembly 310.

In practice, the detection assembly 340 is further preferably a grating scale assembly, the reading heads of which are arranged on the corresponding drive mounting plates 313, and the scales are fixed on the fixing plates 301, so that accurate detection of the movement displacement can be realized. Additionally, in the preferred embodiment, the detection assemblies 340 are preferably electrically connected to the corresponding drive assemblies 320, such that the drive assemblies 320 can provide a compensating driving force based on the detection results of the detection assemblies 340, thereby ensuring that the screen assembly 200 is always in an accurate working position.

Preferably, the first displacement assemblies 310 and the driving assemblies 320 are in one-to-one correspondence and the center lines are coincident, so that the first displacement assemblies 310 cannot be timely adjusted when external force is applied due to inconsistent force arms of the driving assemblies 320 and inconsistent distances from the driving assemblies 320 to the detecting assemblies 340 in actual working, and the final precision is changed.

It is further preferred that the two second displacement assemblies 330 and the three first displacement assemblies 310 are concentrically arranged, which are arranged substantially at the connection locations of the two legs of the U-shaped board with the connection portions. With the above arrangement of the second displacement assembly 330, not only does not affect the movement of the screen precision adjusting assembly 300, but also more stable support can be provided for the fixing plate 301 and the adjusting plate 302, and the screen precision adjusting assembly 300 can be made more stable.

In addition, in actual setting, the size of the clearance hole 600 is preferably larger than the size of the screen printing pattern on the screen 201 of the screen assembly 200, and the position of the screen 201 is set corresponding to the size of the clearance hole, so that the doctor blade of the doctor blade assembly 500 can extend into the clearance hole and move along the length or width direction of the groove, and paste on the screen is scraped onto a battery piece to be printed, which is arranged below the clearance hole according to the screen pattern.

As a further improvement of the technical scheme in the utility model, during actual setting, a Z-axis module can be preferably set for the screen precision adjusting assembly 300, so that the screen precision adjusting assembly 300 is arranged on the Z-axis module and can reciprocate in the Z-direction under the drive of the Z-axis module.

As a specific embodiment, the Z-axis module preferably includes a vertically disposed support plate, on which one or two parallel slide rails are vertically disposed, the slide blocks move up and down along the slide rails through a driving mechanism, two sides of the Y-direction of the fixing plate 301 of the screen precision adjusting assembly 300 are respectively fixed on the slide blocks, and the slide blocks drive the screen precision adjusting assembly 300 to move along the Z-direction when moving up and down along the slide rails through the driving mechanism.

The screen printing module is compact in structure and convenient to control, can realize screen printing of the battery piece, ensures reliability and precision of the screen assembly position in the printing process, ensures precision of the screen printing process of the battery piece, improves efficiency and quality of screen printing of the battery piece of the photovoltaic assembly, and has good practical value and application prospect.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. A screen printing module comprises a scraper component and a screen plate component; the scraper assembly is assembled and arranged on the scraper driving assembly, a screen fixing assembly is arranged corresponding to the screen assembly, and the screen assembly is fixed below the scraper assembly by the screen fixing assembly, and the device is characterized by further comprising a screen precision adjusting assembly;

the screen precision adjusting assembly comprises a fixed plate and an adjusting plate which are oppositely arranged in the Z direction, wherein the plate bodies of the fixed plate and the adjusting plate are connected through a first displacement assembly, and the plate bodies of the fixed plate and the adjusting plate are respectively provided with a clearance hole for the scraper assembly to pass through; and is also provided with

The first displacement assembly comprises a first displacement unit, a second displacement unit and a third displacement unit which are circumferentially arranged at intervals outside the avoidance hole, and the axes of the three displacement units are positioned on the same circle; the driving units are respectively arranged corresponding to the displacement units, wherein the driving directions of the two driving units are parallel and perpendicular to the driving direction of the other driving unit, and the two driving units with the parallel driving directions are respectively arranged at two sides of the scraper component;

the displacement unit comprises a top moving plate, a driving mounting plate and a bottom moving plate which are sequentially arranged in the Z direction; the top moving plate is fixedly connected with the fixed plate, the bottom moving plate is rotationally connected with the adjusting plate, the driving mounting plate is connected with an output shaft of a corresponding driving unit, the driving mounting plate and the top moving plate are assembled through a first guide rail with a moving direction parallel to the axial direction of the output shaft, and the driving mounting plate and the bottom moving plate are assembled through a second guide rail with a moving direction perpendicular to the axial direction of the output shaft;

the driving unit is fixedly arranged on the fixing plate.

2. The screen printing module according to claim 1, wherein two driving units with parallel driving directions are used for driving the first displacement unit and the second displacement unit respectively, and the driving directions of the two driving units are along the Y direction respectively and are arranged at intervals in the X direction.

3. The screen printing module according to claim 2, wherein the length of the clearance hole in the Y direction is greater than the length of the clearance hole in the X direction; the length of the fixing plate in the Y direction is greater than that of the adjusting plate in the X direction.

4. The screen printing module of claim 3, wherein the fixing plate is a U-shaped plate and the adjusting plate is a rectangular square frame plate;

the first displacement unit and the second displacement unit are respectively arranged between the supporting part of the U-shaped plate and the adjusting plate, and the third displacement unit is arranged between the connecting part of the U-shaped plate and the adjusting plate.

5. The screen printing module of claim 2, wherein the drive direction of the squeegee drive assembly is the Y direction.

6. The screen printing module according to any one of claims 1 to 5, wherein the line connecting the centers of the three displacement units forms an isosceles triangle or an equilateral triangle.

7. The screen printing module of any of claims 1 to 5, further comprising a second displacement assembly;

the second displacement assembly comprises at least one follow-up displacement unit; the structure of the follow-up displacement units is the same as that of the displacement units in the first displacement assembly, and the centers of the follow-up displacement units and the centers of the displacement units in the first displacement assembly are positioned on the same circle.

8. The screen printing module according to claim 7, wherein the follow-up displacement unit is provided between the first displacement unit and the third displacement unit and/or between the second displacement unit and the third displacement unit.

9. The screen printing module according to any one of claims 1 to 5, wherein a detection assembly is provided corresponding to at least one displacement unit in the first displacement assembly, for detecting the movement displacement of the at least one displacement unit in the corresponding direction in real time.

10. The screen printing module according to any one of claims 1 to 5 and 8, wherein the screen fixing assembly comprises a fixed clamping plate and a movable clamping plate which are arranged on one side of the adjusting plate away from the fixed plate;

the fixed clamping plate and the movable clamping plate are oppositely arranged in the X direction, the fixed clamping plate is fixedly connected with the adjusting plate, and the movable clamping plate is movably connected with the adjusting plate; and a clamping assembly is arranged corresponding to the movable clamping plate and used for driving the movable clamping plate to be close to or far away from the fixed clamping plate.