CN217671678U - Scraper and solder paste printing machine thereof - Google Patents

Abstract

The utility model relates to the technical field of solder paste printing equipment, in particular to a scraper, which comprises a main body part and a scraping coating part, wherein the main body part comprises a scraping coating part, two opposite side walls connected with the scraping coating part and two opposite stopping parts connected with the scraping coating part and the side walls, and the stopping parts are used for stopping the solder paste scraped by the scraping coating part; the scraping coating piece is arranged at the two opposite ends of the scraping coating part close to the side wall and used for collecting the solder paste. The utility model also provides a solder paste printing machine. The utility model discloses a scraper and tin cream printing machine thereof has solved current scraper and has leaded to the technical problem that tin cream spilled over at the knife coating.

Description

Scraper and tin cream printing machine thereof

[ technical field ] A method for producing a semiconductor device

The utility model relates to a tin cream lithography apparatus technical field, in particular to scraper and tin cream printing machine thereof.

[ background ] A method for producing a semiconductor device

With the development of electronic technology, the requirements for the reliability and stability of components in electronic products are higher and higher. The components in the electronic products are mainly fixed by means of soldering tin, before the components are fixed, solder paste is required to be coated on a set position on a substrate, then the reciprocating scraper is used for coating the solder paste, and the stability of the components welded at the back is directly influenced by the quality of the solder paste coating. However, the existing scraper usually overflows from two sides of the solder paste during the scraping process, so that the overflowing solder paste remains on the template, the overflowing solder paste hardens after being dried, the template must be cleaned regularly by manpower, too much manpower and time are consumed, and the solder paste remaining on the template may not be recycled.

[ Utility model ] content

For solving current scraper and leading to the technical problem that the tin cream spills over at the knife coating, the utility model provides a scraper and tin cream printing machine thereof.

The utility model provides a scraper, which comprises a main body part and a scraper coating part, wherein the main body part comprises a scraper coating part, two opposite side walls connected with the scraper coating part and two opposite stopping parts connected with the scraper coating part and the side walls, and the stopping parts are used for stopping the solder paste scraped by the scraper coating part; the scraping coating piece is arranged at the two opposite ends of the scraping coating part close to the side wall and used for gathering the solder paste.

Preferably, the scraping and coating part comprises a first scraping and coating part and a second scraping and coating part, two ends of the first scraping and coating part and/or the second scraping and coating part are bent towards the stopping part and form a semi-surrounding space with the stopping part, and the semi-surrounding space is used for containing solder paste when the scraping and coating part scrapes the solder paste.

Preferably, the scraping and coating member is of integral construction or removably attached to the body member.

Preferably, the angle of the stop with one end of the first and/or second blade is in the range of 40 ° to 90 °.

Preferably, the first blade comprises a first bottom side and a first top side opposite to the first bottom side, and the second blade comprises a second bottom side and a second top side opposite to the second bottom side; the first bottom surface and/or the second bottom surface are parallel and level to the blade coating portion, the distance from the first bottom surface to the first top surface is 3-10 cm, and the distance from the second bottom surface to the second top surface is 3-15 cm.

Preferably, the main body piece further comprises a mounting part opposite to the scraping and coating part, and the distance from the scraping and coating part to the mounting part is 6-20 cm.

The utility model also provides a solder paste printing machine, which comprises a connecting arm, a template, a connecting seat, a control assembly and the scraper, wherein the scraper is arranged on one side of the template and connected with the connecting seat, and the connecting seat is connected with the connecting arm; the control component is electrically connected with the connecting arm to control the scraper.

Preferably, a space is reserved between the scraping coating part of the scraper and the template, and the distance between the scraping coating part and the template is 2-5 cm.

Preferably, the installation part of the scraper is provided with a positioning piece, and the connecting seat is provided with a fitting piece matched with the positioning piece so as to position the installation of the scraper.

Preferably, the connecting arm is rotatably connected with the connecting seat to adjust the angle between the scraper and the template.

Compared with the prior art, the utility model discloses a scraper and tin cream printing machine thereof has following advantage:

1. the utility model provides a scraper, which comprises a main body part and a scraping coating part, wherein the main body part comprises a scraping coating part, two opposite side walls connected with the scraping coating part and two opposite stopping parts connected with the scraping coating part and the side walls, and the stopping parts are used for stopping tin paste scraped by the scraping coating part; scrape the coating and locate the relative both ends that knife coating portion is close to the lateral wall and be used for drawing in tin cream in, the scraper can carry out single direction movement, also can carry out repetitive motion or rotary motion, when the scraper carries out single direction movement, a crotch portion that ends on the main part spare is used for backstop knife coating portion knife coating accumulational tin cream, and tin cream that the tin cream was piled up the unnecessary back of spilling over is scraped by first knife coating and second and is painted the piece and draw in. When the scraper carries out reciprocating motion, another end crotch portion on the main part spare has the same beneficial effect with above-mentioned backstop portion, and simultaneously, first scraping scribbles the piece and the second is scraped and is scribbled the piece and still can draw in the unnecessary tin cream that overflows to another backstop portion backstop tin cream in-process, avoids tin cream to remain and causes the waste.

2. The utility model discloses a knife coating piece includes that first scraping is scribbled piece and second and is scraped and scribble the piece, first scraping is scribbled piece and/or second and is scraped the both ends of scribbling the piece and buckle towards backstop portion direction and form half encirclement space with backstop portion, during scraper blade coating tin cream, half encirclement space is used for holding tin cream, when blade coating tin cream, the scraper carries out reciprocating motion, double-phase right backstop portion of being connected with blade coating portion and lateral wall can both carry out the backstop to the tin cream of blade coating, and two tin creams that end blade coating crotch portion pile up to the scraper both ends, accumulational tin cream is accomodate in first both ends and backstop portion formation half encirclement space of scraping the piece. Through setting up first scraping and scribbling the piece promptly, scrape the excessive solder paste that scribbles the piece and the semi-enclosed space that backstop portion formed and led to the fact reciprocating motion's scraper effectively and accomodate, avoided the excessive waste that leads to the fact of solder paste.

3. The utility model discloses a blade coating spare and main part spare formula structure as an organic whole or detachable are connected, take shape through an organic whole, have greatly improved the production efficiency of scraper.

4. The angle range between the stopping part and one end of the first scraping coating part and/or the second scraping coating part of the utility model is 40-90 degrees. By respectively adjusting the angles of the stopping part and the first scraping piece and/or the second scraping piece, a user can freely select different angles according to solder pastes with different thicknesses, and the solder paste gathering effect is never controlled.

5. The first scraping coating piece of the utility model comprises a first bottom surface and a first top surface opposite to the first bottom surface, and the second scraping coating piece comprises a second bottom surface and a second top surface opposite to the second bottom surface; the first bottom surface and/or the second bottom surface are parallel and level to the scraping coating portion, the distance from the first bottom surface to the first top surface is 3-10 cm, the distance from the second bottom surface to the second top surface is 3-15 cm, and by setting the thickness range, under the condition that the first scraping coating piece and/or the second scraping coating piece are guaranteed to fold the solder paste, the scraper is further lightened, and materials are effectively saved.

6. The utility model discloses a main part still includes the installation department relative with knife coating portion, and the distance of knife coating portion to installation department is 6 centimetres-20 centimetres, through setting up this scope, under guaranteeing the knife coating effect, has further carried out the lightweight to the scraper.

7. The utility model also provides a solder paste printing machine has the same beneficial effect with the foretell scraper, consequently does not give unnecessary details here.

8. The utility model discloses a leave a space between the knife coating portion of scraper and the template, the distance of knife coating portion and template is 2-5 centimetres, and through setting up this scope, the thickness of tin cream knife coating is wide, and the knife coating is effectual.

9. The utility model discloses a be equipped with the setting element on the installation department of scraper, be provided with on the connecting seat with setting element matched with fitting piece to the installation of location main part spare cooperatees through setting element and fitting piece and installs with the location scraper, and the convenience is high.

10. The utility model discloses a linking arm with the connecting seat rotates to be connected, in order to adjust the scraper with the angle of template is through setting up the angle of linking arm adjustment scraper and template in order to realize different angle printing.

[ description of the drawings ]

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

Fig. 1 is a first schematic structural diagram of a scraper according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a scraper according to a first embodiment of the present invention.

Fig. 3 is an exploded view of another embodiment of the present invention.

Fig. 4 is a first plan view of a scraper according to a first embodiment of the present invention.

Fig. 5 is a second plan view of the scraper according to the first embodiment of the present invention.

Fig. 6 is a side wall view of another blade according to the first embodiment of the present invention.

Fig. 7 is a schematic structural view of a solder paste printing machine according to a second embodiment of the present invention.

The attached drawings indicate the following:

1. a scraper; 2. tin paste; 3. a solder paste printer;

10. scraping a coating piece; 11. a main body member; 12. a first doctoring element; 13. a second doctoring element; 14. a bolt; 31. a connecting arm; 32. a template; 33. a connecting seat; 34. a control component;

111. scraping a coating part; 112. a side wall; 113. a stopper portion; 114. an installation part; 115. a first threaded hole; 121. a first bottom surface; 122. a first top surface; 123. a second threaded hole; 131. a second bottom surface; 132. a second top surface; 331. a mating member;

1141. a positioning member; l1, length of the stop; l2, the length of the scraping and coating piece; d1, scraping the distance from the coating part to the mounting part; d2, the distance from the first bottom surface to the first top surface; d3, the distance from the second bottom surface to the second top surface.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 and 2, a first embodiment of the present invention provides a scraper 1, including a main body 11 and a scraper 10, where the main body 11 includes a scraper portion 111, two opposite sidewalls 112 connected to the scraper portion 111, and two opposite stopping portions 113 connected to the scraper portion 111 and the sidewalls 112, and the stopping portions 113 are used for stopping a solder paste 2 scraped by the scraper portion 111; the squeegee members 10 are respectively disposed at opposite ends of the squeegee portion 111 near the side wall 112 for gathering the solder paste 2. In this embodiment, for convenience of illustration, the blade coating member 10 includes a first blade coating member 12 and a second blade coating member 13. It is understood that the two squeegee members 10 can be the same or different, as long as the positions are provided at opposite ends of the squeegee portion 111 near the side walls 112 for gathering the solder paste 2. In the present embodiment, the first and second blade members 12 and 13 are the same, and the connection relationship and connection angle with the blade portion 111 are also the same.

It can be understood that, when blade coating portion 111 is at blade coating tin cream 2, the mode of blade coating portion 111 and the contact of tin cream 2 can be surface contact also can be line contact, scrape coating 13 through setting up first scraping coating 12 and second, when the user carries out blade coating tin cream 2, main part 11 blade coating in-process overflows unnecessary tin cream 2 can be drawn in by first scraping coating 12 and second scraping coating 13, prevented that tin cream 2 is excessive, avoided spending too much manpower and time, clearance remains tin cream 2 outside.

The scraping blade 1 can perform a unidirectional movement, or can perform a repeated movement or a rotational movement, when the scraping blade 1 performs the unidirectional movement, a stopper 113 on the main body 11 is used for stopping the scraping portion 111 from scraping the accumulated solder paste 2, and the excessive solder paste 2 overflowing after the solder paste 2 is accumulated is collected by the first scraping member 12 and the second scraping member 13. When the scraper 1 reciprocates, the other stopping portion 113 on the main body 11 has the same beneficial effect as the stopping portion 113, and meanwhile, the first scraping and coating member 12 and the second scraping and coating member 13 can still collect the excessive solder paste 2 overflowing during the process of stopping the solder paste 2 by the other stopping portion 113, so that waste caused by residual solder paste 2 is avoided.

With reference to fig. 1 and fig. 2, two ends of the first scraping member 12 and/or the second scraping member 13 are bent toward the stopping portion 113 and form a semi-enclosed space with the stopping portion 113, and when the solder paste 2 is scraped by the scraper 1, the semi-enclosed space is used for accommodating the solder paste 2.

As can be understood, the half-enclosed space formed by the two ends of the first scraping member 12 and/or the second scraping member 13 and the stopping portion 113 effectively accommodates the overflowing solder paste 2, and avoids the waste caused by the overflowing solder paste 2.

Preferably, when the solder paste 2 is applied, the doctor blade 1 reciprocates, the two opposing stopping portions 113 connected to the applying portion 111 and the side wall 112 can stop the applied solder paste 2, the solder paste 2 applied by the two stopping portions 113 is stacked toward two ends of the doctor blade 1, and the stacked solder paste 2 is accommodated in a semi-enclosed space formed by the two ends of the first and/or second scraping and coating members 12 and 13 and the stopping portions 113. That is, by arranging the first scraping member 12, the semi-surrounding space formed by the scraping member and the stopping portion 113 effectively accommodates the excessive solder paste 2 caused by the reciprocating scraper 1, thereby avoiding the waste caused by the excessive solder paste 2.

Referring to fig. 3 and 4, the main body 11 is a one-piece structure; alternatively, the first squeegee member 12 and the second squeegee member 13 can be removably attached to the body member 11. By the integral forming, the production efficiency of the scraper 1 is greatly improved. As a modification, the first squeegee member 12 and the second squeegee member 13 are detachably attached to the main body member 11. Specifically, the first scraping and coating piece 12 and the second scraping and coating piece 13 are connected with the main body piece 11 in a threaded manner, the main body piece 11 is provided with a first threaded hole 115, the first scraping and coating piece 12 and the second scraping and coating piece 13 are provided with a second threaded hole 123 corresponding to the first threaded hole 115, and the bolt 14 sequentially penetrates through the first threaded hole 115 and the second threaded hole 123, so that the main body piece 11 is connected with the first scraping and coating piece 12 or the second scraping and coating piece 13 in a threaded manner. The user can adjust the angle of the first scraping and coating piece 12 or the second scraping and coating piece 13 and the main body piece 11 through the tight degree of connection of the adjusting bolt 14 and the second threaded hole 123, and the convenience is high.

Optionally, referring to fig. 1, 4 and 5, the first scraping member 12 and the second scraping member 13 are symmetrically disposed on two opposite stopping portions 113 of the main body member 11, respectively, and the angle between the stopping portions 113 and one end of the first scraping member 12 and/or the second scraping member 13 ranges from 40 ° to 90 °. Preferably, the stop 113 is at an angle in the range of 40-60 ° to one end of the first 12 and/or second 13 squeegee members.

It will be appreciated that by adjusting the angles of the stop 113 and the first and/or second squeegee members 12, 13, respectively, the user can freely select different angles for different solder pastes 2 to control the wicking action of the solder paste 2. It will also be appreciated that by selecting different lengths of the first and/or second doctoring elements 12, 13, different semi-enclosed spaces may be formed. Preferably, the length of the stopping portion 113 is L1, i.e. the distance between the two side walls 112 of the main body 11. The length of the scraping member is L2, that is, the distance from one end of the first scraping member 12 and/or the second scraping member 13 to the stopping portion 113 is L2, and referring to fig. 5 together with L1 and L2, the ratio between the length L1 and the length L2 ranges from 1.4 to 35, and by limiting the ratio between the length L1 and the length L2, the best receiving effect for the solder paste 2 is ensured. Specifically, the length of the squeegee member 10 is preferably 3-7 cm, and the length of the stopper portion 113 is preferably 10-100 cm. When a user scrapes the solder paste 2 which is easy to overflow, the angle between the stopping portion 113 and the first scraping member 12 and the angle between the stopping portion 113 and the second scraping member 13 only need to be adjusted to 45 °, and at this time, the first scraping member 12 and the second scraping member 13 have the strongest drawing capability on the solder paste 2. When a user scrapes the solder paste 2 which is not easy to overflow, the stopping portion 113 and the first scraping and coating piece 12 and the second scraping and coating piece 13 are adjusted to 90 degrees, the range of the scraper 1 for collecting the solder paste 2 is the largest, and the utilization rate of the scraper 1 is the highest.

Referring to fig. 2 and 6, the main body 11 further includes a mounting portion 114 opposite to the coating portion 111, and the stopper portion 113 connects the coating portion 111 and the mounting portion 114. The distance D1 from the doctor blade portion 111 to the mounting portion 114 is 6 cm to 20 cm, and by setting this range, the doctor blade 1 is further lightened while the doctor effect is ensured.

As a modification, referring to fig. 6, the distance D1 from the coating portion 111 to the mounting portion 114 gradually increases from the end near the first coating member 12 to the end near the second coating member 13, so that the cross section of the main body member 11 is substantially wedge-shaped. It can be understood that, the user can use the scraper 1 to scrape the solder paste 2, and the thickness of the scraped solder paste 2 is continuously gradually changed so as to be suitable for the special use scene of the solder paste 2, and the application range of the scraper 1 is increased.

Further, referring to fig. 1, 2 and 6, the first scraping member 12 includes a first bottom surface 121 and a first top surface 122 opposite to the first bottom surface 121, the second scraping member 13 includes a second bottom surface 131 and a second top surface 132 opposite to the second bottom surface 131, the first bottom surface 121 and/or the second bottom surface 131 is flush with the scraping section 111, a distance D2 from the first bottom surface 121 to the first top surface 122 is 3 cm to 10 cm, and a distance D3 from the second bottom surface 131 to the second top surface 132 is 34 cm to 15 cm. By setting the thickness range, under the condition that the furling effect of the first scraping and coating piece 12 and/or the second scraping and coating piece 13 on the solder paste 2 is ensured, the scraper 1 is further lightened, and materials are effectively saved. The values of the distance D2 and the distance D3 are preferably the same. When the distance from the scraping section 111 of the main body 11 to the mounting section 114 is changed in a gradient manner, the distance from the bottom surface to the top surface of the first scraping member 12 and/or the second scraping member 13 is also changed in a gradient manner, so that the tin paste 2 is more uniformly scraped.

Referring to fig. 7, a solder paste printer 3 according to a second embodiment of the present invention includes a connecting arm 31, a stencil 32, a connecting seat 33, a control unit 34, and the scraper 1 of the first embodiment, wherein the scraper 1 is disposed on one side of the stencil 32 and connected to the connecting seat 33, and the connecting seat 33 is connected to the connecting arm 31; the control component 34 is electrically connected to the connecting arm 31 to control the connecting arm 31 to operate the scraper 1.

Furthermore, a space is reserved between the scraping part 111 of the scraper 1 and the template 32, the distance between the scraping part 111 and the template 32 is 2-5 cm, and by setting the range, the scraping of the solder paste 2 is uniform, the application range of the thickness of the solder paste is wide, and the scraping effect is good.

Further, a positioning member 1141 is disposed on the mounting portion 114 of the scraper 1, and a fitting member 331 engaged with the positioning member 1141 is disposed on the connecting seat 33 to position the mounting of the main body member 11, so that when the scraper 1 is mounted, a user can position the scraper 1 to complete the mounting of the scraper 1 by screwing the positioning member 1141 and the fitting member 331, and the convenience is high.

Further, referring to fig. 7, the connecting arm 31 is rotatably connected to the connecting seat 33 to adjust the angle between the scraper 1 and the template 32, and the user controls the movement path of the connecting arm 31 through the control component 34.

It can be understood that, the user can adjust the angle between the scraper 1 and the stencil 32 by adjusting the angle between the connecting arm 31 and the connecting base 33, and the control unit 34 can be operated, so that the solder paste 2 printing machine can print at different angles.

Compared with the prior art, the utility model discloses a scraper and tin cream printing machine thereof has following advantage:

1. the utility model provides a scraper, which comprises a main body part and a scraping coating part, wherein the main body part comprises a scraping coating part, two opposite side walls connected with the scraping coating part and two opposite stopping parts connected with the scraping coating part and the side walls, and the stopping parts are used for stopping tin paste scraped by the scraping coating part; scrape the coating and locate that the relative both ends that knife coating portion is close to the lateral wall are used for drawing in tin cream in, and the scraper can carry out single motion, also can carry out repetitive movement or rotary motion, and when the scraper carried out single motion, a crotch portion that ends on the main part was used for backstop knife coating portion knife coating accumulational tin cream, and the tin cream that unnecessary spills over after tin cream was piled up is scraped by first knife coating and second and is drawn in. When the scraper carries out reciprocating motion, another end crotch portion on the main part spare has the same beneficial effect with above-mentioned backstop portion, and simultaneously, first scraping scribbles the piece and the second is scraped and is scribbled the piece and still can draw in the unnecessary tin cream that overflows to another backstop portion backstop tin cream in-process, avoids tin cream to remain and causes the waste.

2. The utility model discloses a knife coating piece includes that first scraping is scribbled piece and second and is scraped and scribble the piece, first scrape scribble piece and/or second scrape the both ends of scribbling the piece buckle towards backstop portion direction and form half enclosure space with backstop portion, during scraper knife coating tin cream, half enclosure space is used for holding tin cream, when knife coating tin cream, the scraper carries out reciprocating motion, double-phase right backstop portion of being connected with knife coating portion and lateral wall can both carry out the backstop to knife coating's tin cream, and two tin creams that end crotch portion knife coating pile up to the scraper both ends, accumulational tin cream is accomodate at first both ends of scraping and scribble the piece and in backstop portion forms half enclosure space. Through setting up first scraping and scribbling the piece promptly, scrape the excessive solder paste that scribbles the piece and the semi-enclosed space that backstop portion formed and led to the fact reciprocating motion's scraper effectively and accomodate, avoided the excessive waste that leads to the fact of solder paste.

3. The utility model discloses a blade coating spare and main part spare formula structure as an organic whole or detachable are connected, take shape through an organic whole, have greatly improved the production efficiency of scraper.

4. The angle range between the stopping part and one end of the first scraping coating part and/or the second scraping coating part of the utility model is 40-90 degrees. By respectively adjusting the angles of the stopping part and the first scraping piece and/or the second scraping piece, a user can freely select different angles according to solder pastes with different thicknesses, and the solder paste gathering effect is never controlled.

5. The first scraping coating piece of the utility model comprises a first bottom surface and a first top surface opposite to the first bottom surface, and the second scraping coating piece comprises a second bottom surface and a second top surface opposite to the second bottom surface; the first bottom surface and/or the second bottom surface are parallel and level to the scraping coating portion, the distance from the first bottom surface to the first top surface is 3-10 cm, the distance from the second bottom surface to the second top surface is 3-15 cm, and by setting the thickness range, under the condition that the first scraping coating piece and/or the second scraping coating piece are guaranteed to fold the solder paste, the scraper is further lightened, and materials are effectively saved.

6. The utility model discloses a main part still includes the installation department relative with knife coating portion, and knife coating portion is 6 centimetres-20 centimetres to the distance of installation department, through setting up this scope, under guaranteeing the knife coating effect, has further carried out the lightweight to the scraper.

7. The utility model also provides a solder paste printing machine has the same beneficial effect with the foretell scraper, consequently does not give unnecessary details here.

8. The utility model discloses a leave a space between the knife coating portion of scraper and the template, the distance of knife coating portion and template is 2-5 centimetres, and through setting up this scope, the thickness of tin cream knife coating is wide, and the effect of knife coating is good.

9. The utility model discloses a be equipped with the setting element on the installation department of scraper, be provided with on the connecting seat with setting element matched with fitting piece to the installation of location main part piece cooperatees through setting element and fitting piece and installs with the location scraper, and the convenience is high.

10. The utility model discloses a linking arm with the connecting seat rotates to be connected, with the adjustment the scraper with the angle of template is through setting up the angle of linking arm adjustment scraper and template in order to realize different angle printing.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement and improvement made within the principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A scraper blade, characterized by: the tin paste scraping device comprises a main body piece and a scraping piece, wherein the main body piece comprises a scraping part, two opposite side walls connected with the scraping part and two opposite stopping parts connected with the scraping part and the side walls, and the stopping parts are used for stopping tin paste scraped by the scraping part; the scraping coating piece is arranged at the two opposite ends of the scraping coating part close to the side wall and used for gathering the solder paste.

2. A doctor blade as claimed in claim 1, wherein: the scraping coating piece comprises a first scraping coating piece and a second scraping coating piece, two ends of the first scraping coating piece and/or the second scraping coating piece bend towards the stopping part direction and form a semi-surrounding space with the stopping part, and the semi-surrounding space is used for containing solder paste when the scraper scrapes the solder paste.

3. A doctor blade as claimed in claim 1, characterized in that: the scraping and coating piece and the main body piece are of an integrated structure or can be detachably connected.

4. A doctor blade as claimed in claim 2, wherein: the angle between the stopping part and one end of the first scraping coating piece and/or the second scraping coating piece ranges from 40 degrees to 90 degrees.

5. A doctor blade as claimed in claim 2, characterized in that: the first blade coating piece comprises a first bottom surface and a first top surface opposite to the first bottom surface, and the second blade coating piece comprises a second bottom surface and a second top surface opposite to the second bottom surface; the first bottom surface and/or the second bottom surface are parallel and level to the blade coating portion, the distance from the first bottom surface to the first top surface is 3-10 cm, and the distance from the second bottom surface to the second top surface is 3-15 cm.

6. A doctor blade as claimed in claim 1, characterized in that: the main part still include with the installation department that blade coating portion is relative, blade coating portion to the distance of installation department is 6 centimetres-20 centimetres.

7. A solder paste printer is characterized in that: comprising a connecting arm, a template, a connecting seat, a control assembly and a scraper blade according to any one of claims 1-6, said scraper blade being arranged on one side of said template and connected to said connecting seat, said connecting seat being connected to said connecting arm; the control component is electrically connected with the connecting arm to control the scraper.

8. The solder paste printer of claim 7, wherein: a space is reserved between the scraping coating part of the scraper and the template, and the distance between the scraping coating part and the template is 2-5 cm.

9. The solder paste printer of claim 7, wherein: be equipped with the setting element on the installation department of scraper, be provided with on the connecting seat with setting element matched with fitting piece, in order to fix a position the installation of scraper.

10. The solder paste printer of claim 9, wherein: the connecting arm is rotatably connected with the connecting seat so as to adjust the angle between the scraper and the template.

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