CN115229295A - Positioner and manual brush tin subassembly - Google Patents
Positioner and manual brush tin subassembly Download PDFInfo
- Publication number
- CN115229295A CN115229295A CN202210653626.7A CN202210653626A CN115229295A CN 115229295 A CN115229295 A CN 115229295A CN 202210653626 A CN202210653626 A CN 202210653626A CN 115229295 A CN115229295 A CN 115229295A
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- Prior art keywords
- positioning
- tin
- brushing
- base
- equipment
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 172
- 230000001680 brushing effect Effects 0.000 claims abstract description 112
- 238000003825 pressing Methods 0.000 claims abstract description 78
- 238000007790 scraping Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 23
- 229910000679 solder Inorganic materials 0.000 description 16
- 239000000463 material Substances 0.000 description 15
- 239000002131 composite material Substances 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 239000007769 metal material Substances 0.000 description 7
- 238000013519 translation Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 239000006071 cream Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/06—Solder feeding devices; Solder melting pans
- B23K3/0607—Solder feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
Abstract
The embodiment of the invention is applied to the field of circuit board processing, and relates to a positioning device and a manual tin brushing assembly, which comprise: the tin brushing device comprises a base, wherein a boss is arranged on the surface of the base, a groove is arranged on the surface of one side of the boss, which is far away from the base, and the groove is used for placing equipment to be brushed; the positioning seat is arranged above the base and located on the periphery of the boss, the positioning seat is provided with a first opening, the size of the first opening is the same as that of the boss, a clamping groove is formed in the inner periphery of the first opening and used for placing tin brushing positioning equipment, and the tin brushing positioning equipment is used for positioning a bonding pad on the tin brushing equipment; the pressing plate is arranged above the positioning seat and provided with a second opening, and the second opening is used for exposing the tin brushing positioning equipment; the surface of the pressing plate close to one side of the positioning seat is provided with a fixing part, and the fixing part is used for fixing tin brushing positioning equipment so as to improve the accuracy of manual tin brushing.
Description
Technical Field
The embodiment of the application relates to the field of circuit board processing, in particular to a positioning device and a manual tin brushing assembly.
Background
In the manufacturing process of the circuit board, it is usually necessary to solder electronic components onto the pads of the circuit board by using solder paste. In the process of brushing tin, a positioning plate needs to be covered on a circuit board to be brushed with tin, the positioning plate is provided with a positioning hole, the positioning hole can expose a bonding pad on the circuit board to be brushed with tin, and after tin paste is coated on the surface of the positioning plate, the tin paste penetrating through the positioning hole can be attached to the bonding pad.
When large-scale manufacturing is carried out, a professional tin paste coating machine can be adopted to carry out rapid flow production, but the positions of the circuit board to be subjected to tin brushing and the corresponding positioning plate in professional equipment are fixed, so that the special tin paste coating machine is not suitable for tin brushing of the circuit board to be subjected to tin brushing with an uncertain structure in the research and development process.
In the development process, the circuit board needs to be improved continuously, so that a manual tin paste brushing mode is adopted to be suitable for the circuit board to be brushed with tin, the structure of which is uncertain. And the mode of traditional manual brush tin cream is inefficient, and the location is inaccurate and leads to the yields not high, causes the problem because of the tin cream leads to the short circuit of circuit easily.
Disclosure of Invention
The embodiment of the application provides a positioning device and a manual tin brushing assembly to improve the problem of inaccurate positioning of a welding disc in the manual tin brushing process.
An embodiment of the present application provides a positioning device, including: the tin brushing device comprises a base, wherein a boss is arranged on the surface of the base, a groove is arranged on the surface of one side of the boss, which is far away from the base, and the groove is used for placing equipment to be brushed; the positioning seat is arranged above the base and positioned on the periphery of the boss, the positioning seat is provided with a first opening, the size of the first opening is the same as that of the boss, a clamping groove is formed in the inner periphery of the first opening, the clamping groove is used for placing tin brushing positioning equipment, and the tin brushing positioning equipment is used for positioning a welding disc on the equipment to be brushed with tin; the pressing plate is arranged above the positioning seat and provided with a second opening, and the second opening is used for exposing the tin brushing positioning equipment; the surface of the pressing plate close to one side of the positioning seat is provided with a fixing part, and the fixing part is used for fixing the tin brushing positioning equipment.
In some embodiments, the positioning device further comprises: the positioning chamfer is positioned on the inner periphery of the groove; the positioning notch is positioned on the periphery of the equipment to be brushed with tin; the positioning chamfer is the same as the positioning notch in shape and used for positioning and placing the equipment to be brushed with tin in the groove.
In some embodiments, the positioning device further comprises: the first positioning angle is positioned on the periphery of the boss; a second positioning angle located at an inner periphery of the first opening; the first locating angle is the same as the second locating angle in position and is used for locating and placing the locating seat on the periphery of the boss.
In some embodiments, the positioning device further comprises: the first positioning columns are positioned on the surface of one side, facing the positioning seat, of the pressing plate, and the number of the first positioning columns is more than or equal to 2; the first positioning holes are positioned on the surface of one side, facing the pressure plate, of the positioning seat, and the number of the first positioning holes is not less than that of the first positioning columns; the first positioning hole is matched with the first positioning column in position, and the size of the first positioning column is the same as that of the first positioning hole matched with the first positioning column in size.
In some embodiments, the size of one of the first positioning posts is larger than the size of the remaining first positioning posts.
In some embodiments, the positioning device further comprises: the second positioning columns are positioned on the surface of one side, facing the positioning seat, of the base, and the number of the second positioning columns is more than or equal to 2; the second positioning holes are positioned on the surface of one side, facing the base, of the positioning seat, and the number of the second positioning holes is not less than that of the second positioning columns; the second positioning holes are matched with the second positioning columns in position, and the sizes of the second positioning columns are the same as those of the matched second positioning holes.
In some embodiments, the second positioning column is configured as a positioning screw, and the second positioning hole is configured as a positioning screw hole; wherein, the screw thread of the positioning screw hole is matched with the screw thread of the positioning screw.
In some embodiments, the positioning device further comprises: the third positioning column is positioned on the surface of one side, facing the fixed part, of the clamping groove; the third positioning hole is positioned on the surface of one side, facing the clamping groove, of the fixing part; the through hole is positioned on the tin brushing positioning equipment and penetrates through the tin brushing positioning equipment; the third positioning column, the third positioning hole and the through hole are the same in size and position.
In some embodiments, the base further comprises: the movable pressing sheet is movably arranged in the base, one end of the movable pressing sheet can touch one side of the groove when the movable pressing sheet moves towards the groove, and the other end of the movable pressing sheet is exposed out of the side wall of the base; the spring is positioned between the movable pressing sheet and the base and used for moving one side of the movable pressing sheet far away from the groove; and the limiting block is positioned above the movable pressing sheet in the base and used for keeping the movable pressing sheet away from the groove.
The embodiment of this application still provides a manual brush tin subassembly, includes: according to the positioning device of the embodiment, the equipment to be brushed with tin and the tin brushing positioning equipment are fixed in the positioning device, and the tin brushing positioning equipment is used for positioning and exposing the welding disc on the equipment to be brushed with tin; and the scraping plate is used for conducting positioning tin brushing on the welding disc exposed by the tin brushing positioning equipment.
The technical scheme provided by the embodiment of the application has at least the following advantages: the embodiment of the application provides a positioner and manual brush tin subassembly includes: the top of the base is provided with a boss which can be matched with the first opening on the positioning seat so as to fix the relative position of the base and the positioning seat; the top of the boss is provided with a groove for fixing a device to be brushed with tin; a clamping groove is formed in the positioning seat, and tin brushing positioning equipment can be fixed by the clamping groove, so that the tin brushing positioning equipment is exposed out of a bonding pad on the equipment to be brushed; the clamp plate can be with treating the equipment of brushing tin and brush tin positioning device pressfitting for brush tin positioning device treats the pad on the equipment of brushing tin with accurate exposure, thereby the accuracy of the manual operation of brushing tin that improves.
In addition, can also include in the base: the tin brushing positioning device comprises a groove, a pressing sheet, a spring and a limiting block, wherein the pressing sheet is moved to one side of the groove, one end of the pressing sheet can touch one side of the groove, the other side of the groove and the pressing sheet can clamp a device to be brushed with tin in the groove, so that the device to be brushed with tin is prevented from moving in the process of taking out the tin brushing positioning device after tin brushing is finished, and the problem of short circuit of a circuit board caused by dislocation of tin paste is prevented by avoiding relative translation between the device to be brushed with tin and the tin brushing positioning device; the spring can push the movable pressing sheet to one side far away from the groove after the movable pressing sheet is used up, and then the equipment to be brushed with tin is taken out; the limiting block can keep the position of the movable pressing sheet pushed out by the spring, and the movable pressing sheet is prevented from being separated from the base.
Drawings
One or more embodiments are illustrated by corresponding figures in the drawings, which are not to be construed as limiting the embodiments, unless expressly stated otherwise, the drawings are not to scale; in order to more clearly illustrate the embodiments of the present application or technical solutions in the conventional technology, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a tin brushing positioning device and a device to be brushed with tin according to an embodiment of the present application;
fig. 2 is an external view of a positioning device according to an embodiment of the present disclosure;
FIG. 3 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural view illustrating an expanded internal structure of a positioning device according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a surface of the pressure plate facing a positioning seat according to an embodiment of the present application;
FIG. 6 is a top view structural diagram of an apparatus for placing solder to be brushed on an inner base according to an embodiment of the present application;
fig. 7 is a schematic partial structural view of a base and a positioning seat provided in the embodiment of the present application;
FIG. 8 is a schematic view of a partial structure of a positioning seat and a pressure plate provided in the embodiment of the present application;
fig. 9 is a schematic structural view of the positioning seat placement tin brushing positioning device provided in the embodiment of the present application.
Detailed Description
Known from the background art, the problem of low tin brushing positioning accuracy exists in the manual tin brushing process.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a tin brushing positioning device and a device to be brushed, provided by an embodiment of the present application, in a manual tin brushing process, a pad 103 on the device to be brushed 102 needs to be aligned with a tin brushing positioning device 101, so that the pad 103 on the device to be brushed 102 is exposed by the tin brushing positioning device 101, and then a solder paste is applied to a surface of the tin brushing positioning device 101, so that the exposed pad 103 is attached with the solder paste. Due to the fact that viscosity of the solder paste is high, in the process of soldering, relative translation is easily caused between the soldering positioning device 101 and the device 102 to be soldered, so that the solder paste is attached to the outside of the soldering pad 103, and further a short circuit problem of a circuit board due to solder paste connection is caused.
An embodiment of the application provides a positioning device to improve the inaccurate problem of manual brush tin in-process to the welding disc location.
It will be appreciated by those of ordinary skill in the art that in the various embodiments of the present application, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present disclosure, and the embodiments may be combined with each other and referred to each other without contradiction.
Fig. 2 is an external schematic view of the positioning device provided in this embodiment, fig. 3 isbase:Sub>A schematic cross-sectional view of fig. 2 alongbase:Sub>A directionbase:Sub>A-base:Sub>A, fig. 4 isbase:Sub>A schematic structural view of an expanded internal structure of the positioning device provided in this embodiment, fig. 5 isbase:Sub>A schematic structural view ofbase:Sub>A side surface of the pressure plate facing the positioning seat provided in this embodiment, fig. 6 isbase:Sub>A structural view ofbase:Sub>A top of the positioning seat provided in this embodiment for placingbase:Sub>A device to be brushed with tin, fig. 7 isbase:Sub>A schematic structural view ofbase:Sub>A part of the base and the positioning seat provided in this embodiment, fig. 8 isbase:Sub>A schematic structural view ofbase:Sub>A part of the positioning seat and the pressure plate provided in this embodiment, and fig. 9 isbase:Sub>A schematic structural view of the positioning seat provided in this embodiment for placing the device to be brushed with tin. The following detailed description of the positioning device provided by the present invention is made with reference to the accompanying drawings, which specifically include the following:
referring to fig. 2 to 5, the positioning apparatus includes:
the tin brushing device comprises a base 200, wherein a boss 201 is arranged on the surface of the base 200, a groove 202 is arranged on the surface of one side, away from the base 200, of the boss 201, and the groove 202 is used for placing a device 102 to be brushed with tin; the positioning seat 300 is arranged above the base 200 and located at the periphery of the boss 201, the positioning seat 300 is provided with a first opening 301, the size of the first opening 301 is the same as that of the boss 201, a clamping groove 302 is formed in the inner periphery of the first opening 301, the clamping groove 302 is used for placing the tin brushing positioning device 101, and the tin brushing positioning device 101 is used for positioning a bonding pad 103 on the device 102 to be brushed with tin; the pressing plate 400 is arranged above the positioning seat 300, the pressing plate 400 is provided with a second opening 401, and the second opening 401 is used for exposing the tin brushing positioning equipment 101; the surface of the pressing plate 400 close to one side of the positioning seat 300 is provided with a fixing part 402, and the fixing part is used for fixing the tin brushing positioning device 101.
In the positioning device provided by the embodiment of the application, the base 200 can fix the device 102 to be brushed with tin, wherein the base 200 is further provided with the boss 201 which can be used for fixing the relative position between the base 200 and the positioning seat 300 so as to ensure that the base 200 and the positioning seat 300 are not dislocated in the process of brushing tin; the positioning seat 300 can fix the tin brushing positioning device 101, so that the tin brushing positioning device 101 can accurately expose the bonding pad 103 on the device to be brushed; the pressing plate 400 can be used for pressing the equipment 102 to be brushed with tin and the tin brushing positioning equipment 101, so that the distance between the equipment 102 to be brushed with tin and the tin brushing positioning equipment 101 is reduced, and the accuracy of tin brushing is improved through accurate positioning between the equipment 102 to be brushed with tin and the tin brushing positioning equipment 101.
With respect to the base 200, in some embodiments, the base 200 may be formed of a metal material, a plastic material, or a composite material, and the shape of the base 200 may be designed and adjusted according to a specific use environment.
In some embodiments, referring to fig. 3 and 4, the base 200 may further include: the movable pressing sheet 500 is movably arranged in the base 200, when the movable pressing sheet 500 moves towards the groove 202, one end of the movable pressing sheet can reach one side of the groove 202, and the other end of the movable pressing sheet is exposed out of the side wall of the base 200; a spring 501, which is located between the movable pressing sheet 500 and the base 200, and is used for moving one side of the movable pressing sheet 500 away from the groove 202; and a stopper 502 located above the movable pressing plate 500 in the base 200 for keeping the movable pressing plate 500 away from the groove 202.
Referring to fig. 3, after the end of the movable pressing plate 500 outside the sidewall of the base 200 is pushed toward the groove 202, the movable pressing plate 500 can move toward the groove 202; referring to fig. 6, the other end of the movable pressing sheet 500 and the inner wall of the groove 202 can clamp the device 102 to be brushed in the groove 202, so that after the brushing of the solder is completed, the device 102 to be brushed is moved or taken out when the tin brushing positioning device 101 is taken down due to excessive viscosity of the solder paste, which causes the solder paste to be misplaced or covered outside the solder pad 103, thereby preventing the accuracy of the brushing of the solder from being reduced. With continued reference to fig. 3, the spring 501 is located between the movable pressing piece 500 and the base 200, and when the movable pressing piece 500 is no longer pushed toward the groove 202 or the pushing force toward the groove 202 is smaller than the elastic force generated by the spring 501, the spring 501 can push the movable pressing piece 500 out of the side away from the groove 202, so as to take out the device 102 to be brushed. The stop 502 is located above the moving blade 500 to prevent the spring 501 from pushing the moving blade 500 out of the base 200.
It should be noted that, in the present embodiment, the spring 501 is used to push the movable pressing plate 500 to the side away from the groove 202, and other materials with better elasticity can be used for the spring 501 instead to achieve the same purpose, for example, materials with higher elasticity such as rubber can be used. The spring 501 provided in this embodiment is a compression spring; in some embodiments, spring 501 may also be an extension spring.
For example, two ends of a tension spring are fixed on the base 200 and the movable pressing piece 500 respectively, the tension spring can keep one end of the movable pressing piece 500 touching one side of the groove 202, and when the device 102 to be brushed needs to be taken out, one end of the movable pressing piece 500 outside the base 200 can be pulled to be away from one side of the groove 202, so that the device 102 to be brushed is released for taking out.
For the moving blade 500, in some embodiments, the moving blade 500 may be formed of a metal material, a plastic material, or a composite material; for the stop block 502, in some embodiments, the stop block 502 may be formed from a metal material, a plastic material, or a composite material; for spring 501, in some embodiments, the material of spring 501 may be brass wire, white copper wire, hard steel wire, or stainless steel wire, among others.
In this embodiment, the movable pressing sheet 500 functions as: after the movable pressing sheet 500 moves towards the groove 202, the movable pressing sheet 500 and the groove 202 clamp the device 102 to be brushed together, so that after brushing tin is finished, the device 102 to be brushed moves or is taken out to cause the tin paste to be misplaced or cover the bonding pad 103 when the tin brushing positioning device 101 is taken down due to the fact that viscosity of the tin paste is too high, and as long as the characteristics of the effect are met, whether the specific structure is the same as that of the movable pressing sheet 500 provided by the embodiment or not belongs to the protection range of the invention; the stopper 502 functions as: it is within the scope of the present invention to prevent the spring 501 from pushing the moving blade 500 out of the base 200 and to keep the moving blade 500 away from the groove 202, as long as the characteristics of the above effects are satisfied, and whether the specific structure is the same as the limiting block 502 provided in the present embodiment or not.
Referring to fig. 7, a boss 201 is disposed on the surface of the base 200, and a positioning seat 300 is disposed on the top of the base 200 on the side where the boss 201 is disposed, wherein the positioning seat 300 has a first opening 301, the size of the first opening 301 is the same as that of the boss 201, and the boss 201 is used for positioning the positioning seat on the surface of the base 200.
It can be understood that when the positioning seat 300 is located right above the base 200 and the projection of the first opening 301 just covers the periphery of the boss 201, the positioning seat 300 can just be placed on the periphery of the boss 201 of the base 200.
Specifically, the material of the boss 201 may be the same as or different from that of the base 200, and specifically, the boss 201 may be formed using a metal material, a plastic material, or a composite material. The boss 201 may be integrated with the base 200, or may be fixed to the base 200 by a process.
Specifically, the positioning socket 300 may be formed of a metal material, a plastic material, or a composite material.
It can be understood that the positioning seat 300 can be placed on the boss 201 in various orientations, specifically, taking a face with the clamping groove 302 as an upper surface as an example, when the boss 201 is square, four ways of placing the positioning seat 300 on the periphery of the boss 201 are provided, taking one side of the boss 201 as a bottom side as a first orientation, taking a vertical upper surface as an axis, rotating the first orientation axis by 90 degrees, 180 degrees and 270 degrees, and there can also be a placement method in three orientations. When the length and width of the boss 201 have a small deviation, the positioning seat 300 and the boss 201 may be worn by a wrong placing mode different from the first direction, and then the positioning seat 300 and the base 200 are horizontally moved and dislocated in the tin brushing process, which causes the problem of inaccurate tin brushing.
In some embodiments, referring to fig. 7, the positioning device may further include: a first orientation angle 203 located at the periphery of the boss 201; a second positioning angle 303 located at the inner periphery of the first opening 301; the first positioning angle 203 and the second positioning angle 303 are located at the same position, and are used for positioning and placing the positioning seat 300 on the periphery of the boss 201.
The first positioning corner 203 and the second positioning corner 303 can be shaped and sized in various ways, such as a straight line or an arc, and particularly, the positioning seat 300 and the boss 201 can be fixed in the placement direction.
Specifically, referring to fig. 7, the first positioning corner 203 is disposed at the upper left corner of the boss 201, the second positioning corner 303 is disposed at the upper left corner of the inner circumference of the first opening 301, and the first positioning corner 203 and the second positioning corner 303 are the same in size and shape and are both linear. When the positioning seat 300 is located directly above the boss 201 and the projection of the first positioning angle 203 and the projection of the second positioning angle 303 are complementary, the positioning seat 300 can be just placed on the boss 201.
Based on the above discussion, it can be seen that when having the first orientation angle 203 and the second orientation angle 303, the positioning socket 300 can be placed on the periphery of the boss 201 only if the first orientation angle 203 and the second orientation angle 303 are azimuthally aligned. Therefore, when the difference between the length and the width of the positioning seat 300 and the boss 201 is small, the abrasion of the positioning seat 300 and the boss 201 caused by the error of the placing mode can be avoided, and the alignment of the positioning seat 300 and the boss 201 is prevented from deviating.
Referring to fig. 6, a groove 202 is provided on a surface of the boss 201 on a side away from the base 200, the groove 202 is used for placing the device 102 to be brushed, and a shape of the groove 202 may be designed and adjusted according to a shape of the device 102 to be brushed so that the pad 103 can be exposed. In some embodiments, an opening may be further provided on one side of the groove 202 to facilitate removal of the device 102 to be brushed.
It can be understood that, in the process of actually using tin brushing, the device to be brushed 102 has two surfaces, the first surface has the pad 103 to be brushed, and the back surface of the first surface is a smooth plane. Taking the device 102 to be brushed as a rectangle as an example, the first surface is the upper surface, and the device is placed in the groove 202 in two ways, the direction when one short side of the rectangle is used as the bottom side is taken as the first direction, and the axis perpendicular to the first surface is rotated by 180 degrees to be taken as the second direction. In the case that the hole positions of the bonding pad 103 corresponding to the first orientation and the second orientation are different, the wrong placement method can cause that the solder paste can not cover the bonding pad 103.
In some embodiments, referring to fig. 6, the positioning device may further include: a positioning chamfer 204, the positioning chamfer 204 being located at the inner periphery of the groove 202; the positioning notch 105, the positioning notch 105 is positioned on the periphery of the device 102 to be brushed with tin; the positioning chamfer 204 has the same shape as the positioning notch 105 and is used for positioning the device 102 to be brushed in the groove 202.
Specifically, referring to fig. 6, for a square device 102 to be brushed, when the positioning chamfer 204 is disposed at the upper left corner of the inner circumference of the groove 202, the positioning notch 105 is disposed at the upper left corner of the outer circumference of the device 102 to be brushed, and the positioning chamfer 204 and the positioning notch 105 have the same size and shape and are all linear. When the device 102 to be brushed is located right above the groove 202 and the projection of the positioning notch 105 is complementary to the projection of the positioning chamfer 204, the device 102 to be brushed can be placed right in the groove 202.
Based on the above discussion, when the positioning chamfer 204 and the positioning notch 105 are present, the device to be brushed 102 may be completely sunk into the groove 202 only when the positioning chamfer 204 and the positioning notch 105 are in the same orientation, so that there is only one placement manner for the device to be brushed 102. Therefore, the error of manual operation can be prevented, the position of the device 102 to be brushed is put in a wrong position, and the alignment error of the device 102 to be brushed and the tin brushing positioning device 101 is avoided.
In some embodiments, referring to fig. 8, the positioning device may further include: the second positioning columns 205 are located on a side surface of the base 200 facing the positioning seat 300, and the number of the second positioning columns 205 is greater than or equal to 2; second positioning holes 305 are located on a surface of one side of the positioning base 300 facing the base 200, and the number of the second positioning holes 305 is not less than the number of the second positioning pillars 205; the positions of the second positioning hole 305 and the second positioning column 205 are matched, and the size of the second positioning column 205 is the same as that of the matched second positioning hole 305.
It can be understood that, in order to maintain the stable use of the positioning device, the second positioning column 205 and the second positioning hole 305 can further fix the relative position between the positioning seat 300 and the base 200.
Specifically, the second positioning column 205 may be formed by a metal material, a plastic material, or a composite material. The second positioning column 205 may be a cylinder, a quadrangular prism, or other shapes, and the shape may be designed and adjusted. The second positioning column 205 may be formed integrally with the positioning base 300, or may be fixed on a side surface of the positioning base 300 facing the base 200 by using other processes.
In addition, the number of the second positioning pillars 205 may be multiple, specifically, 2, 4, or 8. The number of the second positioning holes 305 may be greater than or equal to the number of the second positioning pillars 205, that is, when all the second positioning pillars 205 can sink into the corresponding second positioning holes 305, the positioning seat 300 may be matched with the base 200, and the number of the second positioning holes 302 may be greater than the number of the second positioning pillars 205.
It should be noted that different sizes of the second positioning pillars 205 may be the same or different, but the sizes of the second positioning pillars 205 and the corresponding second positioning holes 305 are the same.
In some embodiments, referring to fig. 8, the second positioning post 205 may be configured as a positioning screw, and the second positioning hole 305 may be configured as a positioning screw hole; wherein, the screw thread of the positioning screw hole is matched with the screw thread of the positioning screw. That is to say, when the size of first trompil 301 on the locating seat 300 can realize waiting to brush putting into and taking out of tin equipment 102, positioning screw thread and positioning screw hole can be fixed in the locating seat 300 on base 200, and then reduce the position deviation between locating seat 300 and the base 200 that the frequent assembly of locating seat 300 leads to prevent positioner's location inaccurate.
The purpose of the clamping groove 302 is to fix the tin-brushing positioning device 101 to be aligned and expose the pad 103, and the shape of the clamping groove 302 can be designed and adjusted according to the tin-brushing positioning device 101, so that the tin-brushing positioning device 101 can be aligned with the device 102 to be brushed to expose the pad 103.
In some embodiments, referring to fig. 5, 7 and 9, the positioning device may further include: a third positioning column 304 located on a side surface of the card slot 302 facing the fixing part 402; a third positioning hole 404 located on a side surface of the fixing member 402 facing the card slot 302; the through hole 106 is positioned on the tin brushing positioning equipment 101 and penetrates through the tin brushing positioning equipment 101; the third positioning column 304, the third positioning hole 404 and the through hole 106 have the same size and position.
Referring to fig. 9, when the through hole 106 of the tin-brushing positioning device 101 is aligned with the third positioning column 304 in the card slot 302, the third positioning column 304 can pass through the through hole 106, and at this time, the tin-brushing positioning device 101 can be completely sunk into the card slot 302, and meanwhile, the third positioning hole 404 is provided on the fixing part 402 of the pressing plate 400, which can also keep the pressing plate 400 and the positioning base 300 in a matching and fixing manner. Third reference column 304 can be used for confirming the position of brushing tin positioning device 101, refer to the above-mentioned mode of placing of waiting to brush tin equipment 102, the position that brush tin positioning device 101 was placed can have the multiple, for reducing the degree of difficulty of manual operation, improve the efficiency of brushing tin work, set up the position that third reference column 304 can convenient and fast definite brush tin positioning device 101 placed in draw-in groove 302, and then improve the efficiency of brushing tin process, avoid brushing tin and aim at the mistake and lead to the yields to descend.
Specifically, the material of the pressing plate 400 and the fixing member 402 may be the same or different, and the pressing plate 400 and the fixing member 402 may be formed of a metal material, a plastic material, or a composite material. The fixing member 402 may be integrated with the pressure plate 400, or may be fixed to the pressure plate 400 by using another process. The second opening 401 of the pressing plate 400 may be the same size as or different from the first opening 301, so as to expose the pad 103 of the device 102 to be brushed.
The pressing plate 400 is used for pressing the device 102 to be brushed with tin and the positioning device 101 to be brushed with tin, and the pressing plate 400 may translate in the operation process to cause relative translation between the positioning device 101 to be brushed with tin and the device 102 to be brushed with tin, so that deviation occurs in the tin brushing point position.
In some embodiments, referring to fig. 5 and 9, the positioning device may further include: the first positioning columns 403 are positioned on one side surface of the pressure plate 400 facing the positioning seat 300, and the number of the first positioning columns 403 is greater than or equal to 2; the first positioning holes 306 are positioned on the surface of one side of the positioning seat 300 facing the pressure plate 400, and the number of the first positioning holes 306 is not less than that of the first positioning posts 403; the positions of the first positioning hole 306 and the first positioning post 403 are matched, and the size of the first positioning post 403 is the same as the size of the matched first positioning hole 306.
Referring to fig. 5 and 9, the pressing plate 400 is turned over to make the first positioning column 403 face one side of the positioning seat 300, the pressing plate 400 is located right above the positioning seat 300, when the projection of the first positioning column 403 is just located in the first positioning hole 306, the first positioning column 403 can sink into the first positioning hole 306, and the pressing plate 400 and the positioning seat 300 can be pressed together. The first positioning column 403 is matched with the first positioning hole 306, so that relative translation between the pressing plate 400 and the positioning seat 300 can be avoided, and further, the tin brushing process is prevented from being performed due to the movement of the pressing plate 400, the tin brushing positioning equipment 103 is driven to move, and therefore the relative translation between the tin brushing equipment 102 and the tin brushing positioning equipment 101 is avoided.
Based on the above discussion, the matching between the first positioning column 403 and the first positioning hole 306 can prevent the relative translation between the positioning seat 300 and the pressing plate 400, and avoid the accuracy of tin brushing reduced due to the translation dislocation in the tin brushing process. The number of the first positioning holes 306 may be greater than or equal to that of the first positioning posts 403, that is, when all the first positioning posts 403 can be matched with the corresponding first positioning holes 306, the pressure plate 400 may sink onto the positioning seat 300, that is, the relative position between the pressure plate 400 and the positioning seat 300 may be determined.
Specifically, the number of the first positioning pillars 403 may be plural, and specifically, may be 2, 4, or 8. The different first positioning posts 403 may be the same size or different sizes, but the first positioning posts 403 are the same size as the corresponding first positioning holes 306.
Further, in some embodiments, the size of one of the first positioning posts 403 may be larger than the size of the remaining first positioning posts 403. That is, when the size of the No. 1 first positioning post 403 is different from the size of the first positioning post 403, the pressing plate 400 can be placed on the positioning socket 300 only when the No. 1 first positioning post 403 is matched with the corresponding first positioning hole 306. When the size of the first positioning column 403 No. 1 is larger than the sizes of the other first positioning columns 403, only one condition exists in the orientations of the pressing plate 400 and the positioning seat 300, so that the uniqueness of the pressing plate 400 placed on the positioning seat 300 is realized. Therefore, the working efficiency of brushing tin can be improved, and the simplicity and accuracy of manual operation can be improved.
In the present embodiment, referring to fig. 5, 8 and 9, the first positioning posts 403 and the second positioning posts 205 have the same number, and the first positioning holes 306 and the second positioning holes 305 have the same number and the same position; in other embodiments, the first positioning holes 306 and the second positioning holes 305 may be arranged in different positions and/or different numbers, and accordingly, the first positioning posts 403 and the second positioning posts 205 may also be arranged in different positions and/or different numbers.
Specifically, the material of the first positioning column 403 may be metal, plastic or composite material, and the shape of the first positioning column 403 may be a cylinder, a quadrangular prism or other shapes. The first positioning column 403 may be integrally formed with the pressure plate 400, or may be fixed to a side surface of the pressure plate 400 facing the positioning seat 300 in other manners.
To sum up, in the positioning device provided in the embodiment of the present application, the base 200 may fix the device 102 to be brushed with tin, wherein the base 200 is further provided with the boss 201, which may be used to fix a relative position between the base 200 and the positioning seat 300, so as to ensure that the base 200 and the positioning seat 300 are not dislocated in the process of brushing with tin; the positioning seat 300 can fix the tin brushing positioning equipment 101, so that the tin brushing positioning equipment 101 can accurately expose the bonding pad 103 on the equipment to be brushed; the pressing plate 400 can be used for pressing the equipment 102 to be brushed with tin and the tin brushing positioning equipment 101, so that the distance between the equipment 102 to be brushed with tin and the tin brushing positioning equipment 101 is reduced, and the accuracy of tin brushing is improved through accurate positioning between the equipment 102 to be brushed with tin and the tin brushing positioning equipment 101.
It should be noted that the features disclosed in the positioning device provided in the above embodiments can be arbitrarily combined without conflict, and a new positioning device embodiment can be obtained.
Another embodiment of the present application further provides a manual tin brushing assembly, including: according to the positioning device provided by the above embodiment, the device 102 to be brushed and the positioning device 101 to be brushed are fixed in the positioning device, and the positioning device 101 to be brushed is used for positioning and exposing the bonding pad 103 on the device 102 to be brushed; and the scraping plate is used for conducting positioning tin brushing on the welding pad 103 exposed by the tin brushing positioning equipment. Can make the accurate location of brushing tin positioning device 101 and expose the pad 103 of waiting to brush on the tin equipment 102 through positioner, the scraper blade can coat the tin cream in the surface of brushing tin positioning device 102, and the tin cream can cover on the pad 103 that brushes tin positioning device 102 and expose to improve the accuracy and the efficiency of manual tin of brushing, reduce the degree of difficulty of manual tin of brushing.
The device to be brushed with tin 102 can be a circuit board, and the material of the brushing positioning device 101 can be metal, plastic or composite material.
The purpose of the device 102 to be brushed is to accurately expose all the pads 103 of the pads 103, and in a specific setting, the shape of the device 102 to be brushed and the shape of the positioning device 101 to be brushed may be the same or different. In addition, the thicknesses of the device to be brushed 102 and the positioning device for brushing tin 101 can be adjusted according to different requirements.
The material of the scraper can be metal, plastic or composite material, and the scraper is used for applying solder paste to the surface of the tin brushing positioning device 101 exposed by the second opening 401, so as to attach the solder paste to the pad 103 exposed by the tin brushing positioning device 101.
It can be understood that, because the tin brushing positioning device 101 and the device 102 to be brushed during the development process are updated and iterated frequently, the tin brushing positioning device 101 and the device 102 to be brushed can be replaced according to actual conditions, and the groove 202 and the clamping groove 302 in the positioning device can be adjusted and designed according to actual needs, so that the tin brushing positioning device 101 and the device 102 to be brushed can be accurately positioned, and all the pads 103 on the device 102 to be brushed can be exposed accurately.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementations of the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application.
Claims (10)
1. A positioning device, comprising:
the tin brushing device comprises a base, wherein a boss is arranged on the surface of the base, a groove is arranged on the surface of one side of the boss, which is far away from the base, and the groove is used for placing equipment to be brushed with tin;
the positioning seat is arranged above the base and located on the periphery of the boss, the positioning seat is provided with a first opening, the size of the first opening is the same as that of the boss, a clamping groove is formed in the inner periphery of the first opening, the clamping groove is used for placing tin brushing positioning equipment, and the tin brushing positioning equipment is used for positioning a bonding pad on the equipment to be brushed with tin;
the pressing plate is arranged above the positioning seat and provided with a second opening, and the second opening is used for exposing the tin brushing positioning equipment;
and a fixing part is arranged on the surface of one side of the pressing plate, which is close to the positioning seat, and the fixing part is used for fixing the tin brushing positioning equipment.
2. The positioning device of claim 1, further comprising:
a positioning chamfer located at an inner periphery of the groove;
the positioning notch is positioned on the periphery of the equipment to be brushed with tin;
the positioning chamfer is the same as the positioning notch in shape and used for positioning and placing the equipment to be brushed with tin in the groove.
3. The positioning device of claim 1, further comprising:
the first positioning angle is positioned on the periphery of the boss;
a second positioning angle located at an inner periphery of the first opening;
the first positioning angle and the second positioning angle are in the same position and used for positioning and placing the positioning seat on the periphery of the boss.
4. The positioning apparatus of claim 1, further comprising:
the first positioning columns are positioned on the surface of one side, facing the positioning seat, of the pressing plate, and the number of the first positioning columns is more than or equal to 2;
the first positioning holes are positioned on the surface of one side, facing the pressure plate, of the positioning seat, and the number of the first positioning holes is not less than that of the first positioning columns;
the first positioning hole is matched with the first positioning column in position, and the size of the first positioning column is the same as that of the first positioning hole matched with the first positioning hole in size.
5. The positioning device of claim 4, wherein one of said first positioning posts is larger in size than the remaining ones of said first positioning posts.
6. The positioning device of claim 1, further comprising:
the second positioning columns are positioned on the surface of one side, facing the positioning seat, of the base, and the number of the second positioning columns is more than or equal to 2;
the second positioning holes are positioned on the surface of one side, facing the base, of the positioning seat, and the number of the second positioning holes is not less than that of the second positioning columns;
the second positioning hole is matched with the second positioning column in position, and the size of the second positioning column is the same as that of the matched second positioning hole.
7. The positioning device as claimed in claim 6, wherein the second positioning posts are configured as positioning screws, and the second positioning holes are configured as positioning screw holes;
and the threads of the positioning screw holes are matched with the threads of the positioning screws.
8. The positioning device of claim 1, further comprising:
the third positioning column is positioned on the surface of one side, facing the fixed part, of the clamping groove;
the third positioning hole is positioned on the surface of one side, facing the clamping groove, of the fixing part;
the through hole is positioned on the tin brushing positioning equipment and penetrates through the tin brushing positioning equipment;
the third positioning column, the third positioning hole and the through hole are the same in size and position.
9. The positioning apparatus of claim 1, wherein the base further comprises:
the movable pressing sheet is movably arranged in the base, when the movable pressing sheet moves towards the groove, one end of the movable pressing sheet can reach one side of the groove, and the other end of the movable pressing sheet is exposed out of the side wall of the base;
the spring is positioned between the movable pressing sheet and the base and used for moving one side of the movable pressing sheet far away from the groove;
and the limiting block is positioned above the movable pressing sheet in the base and is used for keeping the movable pressing sheet away from the groove.
10. A manual brush tin subassembly which characterized in that includes:
the positioning device according to any one of claims 1 to 9, wherein a device to be brushed with tin and a positioning device for brushing with tin are fixed in the positioning device, and the positioning device for brushing with tin is used for positioning and exposing a bonding pad on the device to be brushed with tin;
and the scraping plate is used for conducting positioning tin brushing on the bonding pad exposed by the tin brushing positioning equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210653626.7A CN115229295A (en) | 2022-06-09 | 2022-06-09 | Positioner and manual brush tin subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210653626.7A CN115229295A (en) | 2022-06-09 | 2022-06-09 | Positioner and manual brush tin subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115229295A true CN115229295A (en) | 2022-10-25 |
Family
ID=83669751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210653626.7A Pending CN115229295A (en) | 2022-06-09 | 2022-06-09 | Positioner and manual brush tin subassembly |
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| Country | Link |
|---|---|
| CN (1) | CN115229295A (en) |
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