CN218558275U - Screen printing scraper and screen printing machine - Google Patents

Abstract

The utility model provides a screen printing scraper and a screen printing machine, wherein the screen printing scraper comprises a scraping head and a scraping plate, and the scraping plate is used for moving relative to a screen to push slurry to penetrate through meshes of the screen; the scraping head is provided with a first mounting surface used for mounting and fixing the scraping plate; the scraper is provided with a second mounting surface and a slurry pushing surface, the second mounting surface is abutted against the first mounting surface, and the slurry pushing surface is used for pushing slurry in the process that the scraper moves relative to the silk screen; a first mounting angle is formed between the first mounting surface and the printing direction, a second mounting angle is formed between the second mounting surface and the paste pushing surface, and the sum of the first mounting angle and the second mounting angle forms a paste pushing angle; the first mounting surfaces are at least two and are mutually inclined, and/or the second mounting surfaces are at least two and are mutually inclined. The utility model discloses a screen printing scraper can adjust at the different stages of printing and push away the thick liquid angle to reduce the thick liquids that see through the silk screen mesh, avoid thick liquids extravagant, practice thrift manufacturing cost.

Description

Screen printing scraper and screen printing machine

Technical Field

The utility model relates to a solar cell electroplates technical field, especially relates to a screen printing scraper and screen printing machine.

Background

The screen printing process is an important process in the production process of the solar cell, and the electroplating of the cell is realized by using the mesh of the screen to penetrate through the slurry, however, in the screen printing process, the consumption of the slurry penetrating through the mesh is not easy to control, so that the reduction of the consumption of the slurry on the premise of ensuring the printing quality becomes a great challenge of the screen printing process.

The scraper of screen printing comprises scraping head and scraper blade, scrapes the head and is used for fixed scraper blade, and the scraper blade is used for printing thick liquids, and printing process, printing angle and the mesh size of silk screen are directly influencing thick liquids consumption. The smaller the printing angle is, the larger the filling force of the paste is, and the more the paste penetrates through the meshes; the longer the screen printing time, the larger the mesh becomes under the filling stress, and the more the paste amount penetrates through the mesh.

In the existing screen printing process, the printing angle cannot be adjusted, the meshes of the screen gradually become larger along with the printing, the consumption of the slurry is increased, the waste of the slurry is caused, and the production cost is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a screen printing scraper and screen printing machine to solve current screen printing in-process thick liquids consumption great at least, cause the problem of wasting of resources.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model discloses a silk-screen printing scraper, which comprises a scraping head and a scraping plate; the scraping head is detachably connected with the scraping plate, and the scraping plate is used for moving relative to the silk screen so as to push the slurry to penetrate through meshes of the silk screen;

the scraping head is provided with a first mounting surface used for mounting and fixing the scraping plate;

the scraper is provided with a second mounting surface and a slurry pushing surface, the second mounting surface is abutted against the first mounting surface, and the slurry pushing surface is used for pushing the slurry in the process that the scraper moves relative to the silk screen;

a first mounting angle is formed between the first mounting surface and the printing direction, a second mounting angle is formed between the second mounting surface and the paste pushing surface, and the sum of the first mounting angle and the second mounting angle forms a paste pushing angle; the printing direction is the direction of the scraper moving relative to the silk screen;

the number of the first mounting surfaces is at least two, and at least two first mounting surfaces are mutually inclined, and/or the number of the second mounting surfaces is at least two, and at least two second mounting surfaces are mutually inclined.

Optionally, the squeegee comprises a mounting portion and a printing portion;

the installation department with printing portion set up relatively in the both ends of scraper blade, the second installation face set up in on the installation department, push away the starching face set up in on the printing portion.

Optionally, the thickness of the mounting portion is greater than the thickness of the printing portion.

Optionally, the number of the second mounting surfaces is two, and the two second mounting surfaces are disposed on the same side or opposite sides of the mounting portion.

Optionally, the included angle between the two second mounting surfaces is 5-20 °.

Optionally, one of the two second mounting surfaces is parallel to the pulp pushing surface.

Optionally, the first mount angle is 60 ° to 65 °.

Optionally, the squeegee further comprises an elastic pad; the elastic pad is arranged on the paste pushing surface and used for abutting against paste in the printing process.

Optionally, the elastic pad extends out of the end face of the printing portion in a direction away from the mounting portion.

The utility model also discloses a screen printing machine, screen printing machine includes aforementioned arbitrary the screen printing scraper.

Compared with the prior art, screen printing scraper and screen printing machine have following advantage:

the utility model discloses a screen printing scraper is including scraping head and scraper blade, scrapes the head and is provided with first installation face, through the fixed scraper blade of first installation face installation, the scraper blade is provided with second installation face, second installation face and first installation face butt, and the scraper blade is used for following the silk screen motion to promote thick liquids and make its mesh that sees through the silk screen. A first mounting angle is formed between the first mounting surface and the printing direction, a second mounting angle is formed between the second mounting surface and the paste pushing surface, a paste pushing angle is formed by the first mounting angle and the second mounting angle, and the paste pushing angle influences the consumption of paste. The scraping head is provided with at least two mutually-inclined first installation surfaces, and/or the scraping plate is provided with at least two mutually-inclined second installation surfaces, the different first installation surfaces are abutted with the second installation surfaces, and the finally-formed pulp pushing angles are different, so that different first installation surfaces and different second installation surfaces are abutted at different stages of printing, the size penetrating through screen holes can be reduced, the waste of the size is avoided, and the production cost is saved.

The utility model discloses a screen printing machine possesses the same advantage for prior art and aforementioned screen printing scraper, no longer gives details here.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a first screen printing squeegee in this embodiment;

fig. 2 is a schematic view of a second screen printing squeegee in the present embodiment;

FIG. 3 is a schematic view of a squeegee head according to the present embodiment;

FIG. 4 is a schematic view of a squeegee including resilient pads according to this embodiment;

fig. 5 is a schematic view of a third screen printing blade in the present embodiment;

fig. 6 is a schematic view of a pulp pushing angle in the present embodiment.

Description of reference numerals:

1-scraping head, 11-fastener, 101-first mounting surface, 2-scraping plate, 21-mounting portion, 201-second mounting surface, 22-printing portion, 221-pulp-pushing surface, 3-elastic pad and 4-silk screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The terms "first," "second," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that embodiments of the invention can be practiced in sequences other than those illustrated or described herein, and the terms "first," "second," and the like are generally used herein in a generic sense without limitation to the number of terms, e.g., the first term can be one, or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "in one embodiment" appearing in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The present invention provides a screen printing squeegee and a screen printing machine, which will be described in detail below by exemplifying specific embodiments.

Referring to fig. 1 to 6, the screen printing squeegee includes a squeegee head 1 and a squeegee 2; the scraping head 1 is detachably connected with the scraping plate 2, and the scraping plate 2 is used for moving relative to the silk screen 4 so as to push the slurry to penetrate through meshes of the silk screen 4; the scraping head 1 is provided with a first mounting surface 101, and the first mounting surface 101 is used for mounting and fixing the scraping plate 2; the scraper 2 is provided with a second mounting surface 201 and a slurry pushing surface 221, the second mounting surface 201 is abutted against the first mounting surface 101, and the slurry pushing surface 221 is used for pushing the slurry in the process that the scraper 2 moves relative to the screen 4; a first mounting angle is formed between the first mounting surface 101 and the printing direction, a second mounting angle is formed between the second mounting surface 201 and the paste pushing surface 221, and the sum of the first mounting angle and the second mounting angle forms a paste pushing angle; the printing direction is the direction of movement of the squeegee 2 relative to the screen 4; at least two first installation surfaces 101 are provided, at least two first installation surfaces 101 are mutually inclined, and/or at least two second installation surfaces 201 are provided, and at least two second installation surfaces 201 are mutually inclined.

Specifically, as shown in fig. 1, the screen printing squeegee includes a squeegee head 1 and a squeegee 2, the squeegee head 1 being detachably attached to the squeegee 2, and the squeegee 2 being adapted to be moved relative to a screen 4 to push a paste through meshes of the screen 4. As shown in fig. 3, the scraping head 1 is provided with a first mounting surface 101, the scraper 2 is mounted and fixed through the first mounting surface 101, and the scraping head 1 and the scraper 2 can be mounted and fixed through the first mounting surface 101 by a fastener 11 such as a bolt, a screw or the like, so as to facilitate replacement of the scraping head 1 or the scraper 2. As shown in fig. 4, the scraper 2 is provided with a second mounting surface 201 and a slurry pushing surface 221, after the scraper head 1 and the scraper 2 are mounted and fixed, the second mounting surface 201 of the scraper 2 is abutted against the first mounting surface 101 of the scraper head 1, and in the process that the scraper 2 moves relative to the screen 4, the slurry pushing surface 221 pushes the slurry to move along the surface of the screen 4, so that the slurry gradually penetrates through the meshes of the screen 4, and the slurry falls onto the battery pieces after penetrating through the meshes of the screen 4, and then the electrodes are formed on the battery pieces in a gathering manner. Since the scraper 2 needs to continuously scrape and coat slurry and is easy to wear and fail, the scraper 2 needs to be periodically checked or replaced, and the scraper head 1 is only used for installing and fixing the scraper 2, does not contact the slurry and is not easy to wear and fail, so that the scraper does not need to be frequently replaced.

A first mounting angle is formed between the first mounting surface 101 of the squeegee head 1 and the printing direction, the printing direction is the direction in which the squeegee 2 moves relative to the screen 4, as shown by arrows in fig. 1 and 2, a second mounting angle is formed between the second mounting surface 201 of the squeegee 2 and the paste pushing surface 221, the sum of the first mounting angle and the second mounting angle forms a paste pushing angle, the paste pushing angle is the angle formed between the paste pushing surface 221 and the screen 4, the paste is accumulated in the range of the paste pushing angle in the process of pushing the paste along the surface of the screen 4, the size of the paste pushing angle directly affects the consumption of the paste in the printing process of the screen 4, the smaller the paste pushing angle is, the larger the filling force of the paste is, the larger the consumption of the paste is, the more the paste is likely to be wasted, the paste pushing angle is, the filling force of the paste is smaller, the smaller the amount of the paste is, the consumption of the paste is smaller, the paste is saved, the larger the consumption of the paste is, the paste is increased in the printing process, the paste cannot be used for avoiding the unqualified printing quality caused by the paste, and the waste of the paste cannot be caused by the excessive pushing force. For easy understanding, after geometric relationship analysis, as shown in fig. 6, the size of a first mounting angle formed between the first mounting surface 101 on the squeegee 1 and the printing direction may be equal to the illustrated central angle a, the size of a second mounting angle formed between the second mounting surface 201 on the squeegee 2 and the paste pushing surface 221 may be equal to the illustrated central angle B, and the paste pushing angle C is formed by overlapping the angle a and the angle B, and normally, the paste pushing angle is set to 60 ° to 75 °.

When the first mounting surfaces 101 are at least two, and the at least two first mounting surfaces 101 are mutually inclined, the first mounting angles formed between the different first mounting surfaces 101 and the printing direction are different, and/or when the at least two second mounting surfaces 201 are at least two, and the at least two second mounting surfaces 201 are mutually inclined, the second mounting angles formed between the different second mounting surfaces 201 and the paste pushing surfaces 221 are different, and when any one of the first mounting angles and the second mounting angles is changed, the angle of the finally formed paste pushing angle is also changed. It should be noted that, in general, the angle of the first mounting angle is larger than the angle of the second mounting angle, which facilitates the pre-estimation of the thrust angle range. Illustratively, in the first embodiment, the first mounting surface 101 includes two, one of which is 60 ° and the other of which is 70 °, and the second mounting surface 201 is one, and is parallel to the paste pushing surface 221, that is, the second mounting angle is 0 °, so that paste pushing angles of 60 ° and 70 ° are formed, respectively, and since meshes of the screen 4 are continuously enlarged by the filling force of the paste during the printing process, the more the paste is penetrated, a printing angle of 60 ° may be selected for printing in the early stage of printing, and a printing angle of 70 ° may be selected for printing in the later stage of printing, so as to save the amount of the paste penetrated in the later stage. In the second embodiment, the first mounting surface 101 is one, and has a size of 60 °, and the second mounting surface 201 is two, one of which is parallel to the paste pushing surface 221, that is, the second mounting angle is 0 °, and the other is inclined with respect to the paste pushing surface 221, and the inclination angle is 10 °, that is, the second mounting angle is 10 °, so that the paste pushing angles formed are 60 ° and 70 °, respectively, and similarly, a printing angle of 60 ° may be selected for printing in the early stage of printing, and a printing angle of 70 ° may be selected for printing in the later stage of printing, so as to save the amount of paste penetrating in the later stage. In the third embodiment, the first mounting surface 101 comprises two mounting surfaces, one of which is 60 °, the other of which is 65 °, and the second mounting surface 201 comprises two mounting surfaces, one of which is parallel to the paste pushing surface 221, namely 0 °, the other of which is inclined relative to the paste pushing surface 221, and the size of the formed second mounting angle is 5 °, then, based on different mounting conditions of the first mounting surface 101 and the second mounting surface 201, paste pushing angles of 60 °, 65 °, and 70 ° can be formed, similarly, a printing angle of 60 ° can be selected for printing in the early stage of printing, a printing angle of 65 ° can be selected for printing in the middle stage of printing, and a printing angle of 70 ° can be selected for printing in the later stage of printing, so as to further save the amount of penetrating paste.

The screen printing scraper provided by the embodiment comprises a scraping head 1 and a scraping plate 2, wherein the scraping head 1 is detachably connected with the scraping plate 2, and the scraping plate 2 is used for moving relative to a screen 4 so as to push slurry to penetrate through meshes of the screen 4. The scraper head 1 is provided with a first mounting surface 101, the scraper 2 is mounted and fixed through the first mounting surface 101, the scraper 2 is provided with a second mounting surface 201 and a slurry pushing surface 221, the second mounting surface 201 is abutted against the first mounting surface 101, and the slurry pushing surface 21 is used for pushing slurry in the process of the movement of the scraper 2 relative to the screen 4. A first installation angle is formed between the first installation surface 101 and the printing direction, a second installation angle is formed between the second installation surface 201 and the paste pushing surface 221, a paste pushing angle is formed by the sum of the first installation angle and the second installation angle, and the paste pushing angle influences the consumption of paste. The scraping head 1 is provided with at least two mutually inclined first mounting surfaces 101, and/or the scraping plate 2 is provided with at least two mutually inclined second mounting surfaces 201, different first mounting surfaces 101 and second mounting surfaces 201 are abutted, and finally formed pulp pushing angles are different, so that different first mounting surfaces 101 and second mounting surfaces 201 are selected to be abutted in different stages of printing, pulp penetrating through meshes of the screen 4 can be reduced, waste of the pulp is avoided, and production cost is saved.

Alternatively, referring to fig. 2 and 4, the blade 2 includes a mounting portion 21 and a printing portion 22; the installation department 21 with printing portion 22 set up relatively in the both ends of scraper blade 2, second installation face 201 set up in on the installation department 21, push away the starching face 221 set up in on the printing portion 22.

Specifically, the scraper blade 2 is a hard plate such as a metal plate, a plastic plate, a wood plate, and the like, the scraper blade 2 comprises an installation part 21 and a printing part 22, the installation part 21 is mainly used for installing and fixing the scraper blade 2, a second installation surface 201 is arranged on the installation part 21 and detachably connected with the scraper head 1 through the second installation surface 201, a paste pushing surface 221 is arranged on the printing part 22, in the printing process, the paste pushing surface 221 pushes paste to move along the surface of the screen 4, in the moving process, the paste gradually penetrates through meshes of the screen 4, and the paste is collected on the battery piece to form an electrode. The mounting portion 21 and the printing portion 22 are oppositely arranged at two ends of the scraper 2, so that interference between a mounting area and a printing area is avoided, and good printing can be guaranteed after the scraper 2 is replaced every time.

Alternatively, referring to fig. 2, the thickness of the mounting portion 21 is greater than the thickness of the printing portion 22.

Specifically, the thickness of installation department 21 is greater than the thickness of printing portion 22 to strengthen the installation reliability of scraper blade 2 and scraping head 1, avoid printing in-process scraper blade 2 to appear rocking, influence printing quality.

Optionally, referring to fig. 4, there are two second mounting surfaces 201, and the two second mounting surfaces 201 are disposed on the same side or opposite sides of the mounting portion 21.

Specifically, the squeegee 2 is provided with two second attachment surfaces 201, and after the two second attachment surfaces 201 are brought into contact with the first attachment surface 101 of the squeegee head 1, two squeegee angles are formed, and printing is performed at different squeegee angles, which results in different amounts of paste consumption. The two second mounting surfaces 201 may be disposed on the same side of the mounting portion 21 and distributed in a step shape on the mounting portion 21, or may be disposed on two opposite sides of the mounting portion 21, as shown in fig. 4, two side walls of the mounting portion 21 are formed, and the two side walls are inclined to each other, so that the mounting portion 21 has an irregular structure. The present embodiment is not limited to a specific arrangement of the second mounting surface 201.

Optionally, an included angle between the two second mounting surfaces 201 is 5 ° to 20 °.

Particularly, no matter two second installation faces 201 on scraper blade 2 set up in the same one side of installation department 21 or relative both sides, the contained angle between two second installation faces 201 should not be too big, set up to 5 ~ 20 usually can, can realize pushing away the effective adjustment of thick liquid angle, can avoid scraper blade 2 supporting part excessively to incline again, cause scraper blade 2 installation unstability.

Alternatively, referring to fig. 4, one of the two second mounting surfaces 201 is parallel to the pulp pushing surface 221.

Specifically, one of the two second mounting surfaces 201 is parallel to the slurry pushing surface 221, and the other is inclined to the slurry pushing surface 221, that is, the second mounting angle formed by one second mounting surface 201 is 0 °, and the second mounting angle formed by the other second mounting surface 201 is not 0 °, when the squeegee 2 is mounted on the squeegee head 1, if the first mounting angle on the squeegee head 1 is appropriate, the second mounting surface 201 corresponding to 0 ° can be directly selected for mounting, and the selection is not calculated by a person. During installation, the second installation surface 201 parallel to the slurry pushing surface 221 can be used as a reference surface for installing the scraper 2, so that operation and analysis of personnel are facilitated.

Optionally, the first mount angle is 60 ° to 65 °.

Particularly, because the silk screen 4 printing in-process, push away the thick liquid angle and be 60 ~ 75 usually, because scrape the manufacturing cost of head 1 higher, difficult frequent change, consequently the setting is scraped first contained angle on 1 and is in 60 ~ 65 scope, reserve 0 ~ 15 adjustment space for the second contained angle, can directly utilize 60 to push away the thick liquid angle and print in earlier stage, the printing later stage can be according to actual need self-adjusting scrapes the installation angle of head 1 or scraper blade 2, can avoid scraping head 1 and scraper blade 2 to change frequently to a certain extent from this.

Optionally, with reference to fig. 4 and 5, the blade 2 further comprises an elastic pad 3; the elastic pad 3 is disposed on a surface of the printing portion 22 for abutting against the paste during the printing process.

Specifically, the squeegee 2 further includes an elastic pad 3, the elastic pad 3 is made of a material having elastic properties such as rubber, silicone, resin, or the like, and can be bonded to the paste pushing surface 221, and can abut against the paste during printing, and it should be noted that, on the basis of a paste pushing angle formed between the paste pushing surface 221 and the screen 4, after the elastic pad 3 is bonded to the surface of the paste pushing surface 221, a printing angle is further formed between the surface of the elastic pad 3 and the screen 4, when the surface of the elastic pad 3 is parallel to the surface of the paste pushing surface 221, the formed printing angle is equal to the paste pushing angle, and when the surface of the elastic pad 3 is not parallel to the surface of the paste pushing surface 221, the formed printing angle is not equal to the paste pushing angle. Since the surface of the elastic pad 3 may deform during the process of pushing the paste, the size of the formed printing angle may change accordingly, for example, when the paste is accumulated more, the paste presses the surface of the elastic pad 3 to make the depression depth deeper, so that the filling force of the paste to the screen 4 is smaller, and the amount of the paste passing through the mesh is smaller, and thus the surface of the elastic pad 3 deforms adaptively during the process of pushing the paste, and the consumption of the paste is adjusted accordingly, thereby further reducing the consumption of the paste. Simultaneously the elastic characteristic of cushion 3 can absorb and slow down the clearance between thick liquids and the silk screen 4, makes thick liquids and the abundant butt of silk screen 4, makes the more even mesh that sees through silk screen 4 of thick liquids, promotes the printing quality. The elastic pad 3 can also play a role in protecting the pulp pushing surface 221 of the scraper blade 2, so that the pulp pushing surface 221 is prevented from being excessively worn, and the service life of the scraper blade 2 is prolonged. The thickness of cushion 3 sets up to 1mm ~ 3mm can, and thickness is too thick can increase the whole weight of scraper blade 2, is unfavorable for scraper blade 2 to move along 4 surface of silk screen, and thickness is too thin then can't realize the effect of homogenization thick liquids, consequently, with the thickness setting of cushion 3 can in above-mentioned within range.

Alternatively, referring to fig. 4 and 5, the elastic pad 3 extends out of the end surface of the printed portion 22 in a direction away from the mounting portion 21.

Particularly, the terminal surface of printing portion 22 is extended along the direction of keeping away from installation department 21 to cushion 3 to further avoid the excessive wearing and tearing of terminal surface of scraper blade 2, realized the more comprehensive protection of scraper blade 2, at the in-process of scraper blade 2 along the motion of silk screen 4, cushion 3 and the contact of silk screen 4 of 2 tip of scraper blade promote thick liquids along the motion of silk screen 4, when the printing yields descends, direct change cushion 3 can, need not frequently change scraper blade 2, prolonged the life of scraper blade 2.

The embodiment of the utility model provides a screen printing machine is still provided, screen printing machine includes any preceding screen printing scraper.

Particularly, the screen printing machine of this embodiment is equipped with aforementioned screen printing scraper, and the thick liquid angle of pushing away of screen printing scraper is adjustable, can push away the thick liquid angle according to the long adjustment of printing in-process, avoids causing the excessive waste of thick liquids, effectively practices thrift manufacturing cost.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal device that comprises the element.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A screen printing scraper is characterized by comprising a scraping head and a scraper blade, wherein the scraping head is detachably connected with the scraper blade, and the scraper blade is used for moving relative to a screen to push slurry to penetrate through meshes of the screen;

the scraping head is provided with a first mounting surface, and the first mounting surface is used for mounting and fixing the scraping plate;

the scraper is provided with a second mounting surface and a slurry pushing surface, the second mounting surface is abutted against the first mounting surface, and the slurry pushing surface is used for pushing the slurry in the process that the scraper moves relative to the silk screen;

a first mounting angle is formed between the first mounting surface and the printing direction, a second mounting angle is formed between the second mounting surface and the paste pushing surface, and the sum of the first mounting angle and the second mounting angle forms a paste pushing angle; the printing direction is the direction of the movement of the scraper relative to the silk screen;

the number of the first mounting surfaces is at least two, and at least two first mounting surfaces are mutually inclined, and/or the number of the second mounting surfaces is at least two, and at least two second mounting surfaces are mutually inclined.

2. The screen printing squeegee according to claim 1, wherein the squeegee includes a mounting portion and a printing portion;

the installation department with printing portion set up relatively in the both ends of scraper blade, the second installation face set up in on the installation department, push away the starching face set up in on the printing portion.

3. A screen printing squeegee according to claim 2, wherein the thickness of the mounting portion is larger than the thickness of the printing portion.

4. A screen printing squeegee according to claim 2 wherein the second mounting surfaces are two, the two second mounting surfaces being provided on the same side or on opposite sides of the mounting portion.

5. A screen printing squeegee according to claim 4 wherein the angle between the two second mounting faces is between 5 ° and 20 °.

6. A screen printing squeegee according to claim 4, wherein one of the two second mounting faces is parallel to the paste ejection face.

7. A screen printing doctor blade as claimed in claim 1, characterized in that the first setting angle is 60 ° to 65 °.

8. The screen printing squeegee of claim 2, wherein the squeegee further comprises an elastic pad;

the elastic pad is arranged on the paste pushing surface and used for abutting against paste in the printing process.

9. A screen printing squeegee according to claim 8, wherein the resilient pad extends beyond the end face of the printing portion in a direction away from the mounting portion.

10. A screen printing machine, characterized in that it comprises a screen printing doctor blade according to any one of claims 1 to 9.

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