CN210588890U - General centre gripping frock of printed circuit board - Google Patents
General centre gripping frock of printed circuit board Download PDFInfo
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- CN210588890U CN210588890U CN201921150844.9U CN201921150844U CN210588890U CN 210588890 U CN210588890 U CN 210588890U CN 201921150844 U CN201921150844 U CN 201921150844U CN 210588890 U CN210588890 U CN 210588890U
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- circuit board
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Abstract
The utility model relates to a general centre gripping frock for printed circuit board, including tray and the location fixture more than two sets of. Each group of positioning and clamping mechanisms comprises at least one supporting mechanism and at least two positioning mechanisms; the positioning mechanism comprises a positioning fixing plate and a positioning column, the supporting mechanism comprises a fixing plate and a supporting column, and the fixing plate and the positioning fixing plate are identical in structure. The tray is flat, screw holes are formed in the tray, and the screw holes are uniformly distributed in rows and columns; the positioning mechanism and the supporting mechanism can be screwed into the screw holes of the tray through the long waist-shaped holes on the positioning mechanism and the supporting mechanism by screws. When the positioning and clamping mechanism is used, each printed circuit board is fixed on the tray through a group of positioning and clamping mechanisms. The utility model discloses can be used for the circulation of all kinds of irregular appearance printing boards and the subsides of installing a computer, can improve printing board production efficiency, reduce the expense of preparation special tray and the quality problems that the printing board circulation in-process produced.
Description
Technical Field
The utility model belongs to Surface Mounting Technology (SMT) field, concretely relates to Printed Circuit Board (PCB) pastes a general centre gripping frock that uses in the dress process and application method thereof.
Background
With the development of electronic technology, printed circuit boards are developed toward multifunction, high integration, and miniaturization. In particular to a high-frequency printed circuit board used by a radar core module, which is irregular in shape in order to adapt to cavities with different shapes in the module. In addition, the cross section of the missile and other products is oval, and the printed circuit board is also made into a corresponding oval.
These printed circuit boards face a number of problems in the actual production process: 1. the surface-mounted equipment uses two parallel tracks to clamp the printed boards, the high-frequency printed circuit board lacks clamping edges, the printed boards with irregular edges lack parallel edges, and the printed boards can not use the surface-mounted equipment to mount components. 2. The high-frequency printed board is easy to collide in the circulation process to cause surface quality defects, such as filter deformation, micro-strip line scratch and the like.
The prior art means is to make special trays aiming at printed circuit boards with different shapes and sizes, but the method has the defects that: 1. in military scientific research and production, the products are various in types and small in batch, more than 300 special trays are manufactured every year, the production cost of each tray is 800 yuan, and 24 million yuan is spent for manufacturing the special trays one year. 2. The production period of the special tray is 1 month, and the delivery of scientific research products is seriously influenced.
In view of the above problems, it is desirable to design a tool that is versatile, highly flexible, and simple to operate.
SUMMERY OF THE UTILITY MODEL
In order to make various shape printed circuit board realize high-efficient clamping and paste dress components and parts to avoid the collision deformation, the microstrip line fish tail etc. of circulation in-process, the utility model provides a printed circuit board's general centre gripping frock.
A universal clamping tool for a printed circuit board comprises a tray 1 and more than two groups of positioning and clamping mechanisms;
the tray 1 is flat, screw holes 11 are uniformly distributed on the tray, and clamping edges 12 are respectively arranged on two symmetrical sides; the top surface of the tray 1 is a working surface, and more than two groups of positioning and clamping mechanisms are fixed on the working surface of the tray 1;
each group of positioning and clamping mechanisms comprises at least two positioning mechanisms; the positioning mechanism comprises a positioning fixing plate and a positioning column 3;
when in use, each printed circuit board is fixed on the tray 1 through a group of positioning and clamping mechanisms.
The technical scheme for further limiting is as follows:
the clamping edge 12 of the tray 1 is in an angle steel shape, one side of the clamping edge is a vertical edge, the other side of the clamping edge is a horizontal edge, the lower end of the vertical edge is fixedly connected with the tray 1, and the horizontal edge extends outwards to form a clamping end.
Screw holes 11 on the tray 1 are uniformly arranged in rows and columns.
The working surface of the tray 1 is a hard anodic oxidation treatment surface, so that the insulativity of the tray is ensured.
The positioning fixing plate is a strip-shaped short plate, a long waist-shaped hole is formed in the length direction of the positioning fixing plate, and two screws are arranged in the long waist-shaped hole; a stud 22 is fixedly arranged on the positioning fixing plate corresponding to one end of the long waist-shaped hole, and the positioning column 3 or the supporting column 4 is arranged on the positioning fixing plate through the threaded connection with the stud 22; the positioning fixing plate is fixedly arranged on the tray 1 through the screw connection of the screw and the screw hole 11 on the tray 1.
The positioning column 3 is a cylinder with three-stage ladder shape, the diameters of the positioning column are sequentially reduced from bottom to top and respectively comprise an upper-layer cylinder 33, a middle cylinder 32 and a bottom-layer cylinder 31, the lower end of the bottom-layer cylinder 31 is provided with a threaded hole, and during use, the upper end of the upper-layer cylinder 33 is matched with a positioning hole in a processed printed circuit board.
Each group of positioning and clamping mechanisms further comprises at least one supporting mechanism, and each supporting mechanism comprises a fixing plate and a supporting column 4; the fixing plate and the positioning fixing plate are identical in structure.
The support column 4 is a cylinder with a secondary ladder shape, the upper part is an upper support column 42 with a small diameter, the lower part is a lower support column 41 with a large diameter, the lower end of the lower support column 41 is provided with a threaded hole, and during use, the upper end of the upper support column 42 is in contact with the bottom surface of a processed printed circuit board.
The universal clamping tool is made of aluminum alloy.
The beneficial technical effects of the utility model are embodied in the following aspects:
1. the utility model discloses a general centre gripping frock, general, nimble, easy operation; the printed circuit boards with different thicknesses and widths can be effectively fixed. The tool is simple to operate, 16 pieces can be placed on the small printed board, and the formed jointed board can be suitable for surface mounting equipment. The tool is also suitable for the printed circuit board with the conventional shape.
2. The utility model discloses general centre gripping frock is with low costs, and the cost of making one set of general type printed circuit board centre gripping frock is about 1 ten thousand yuan, and 2 sets of preparation can satisfy a SMT production line production, reduce the expense and the time of making special tray repeatedly, have promoted the equipment mobility about 20%.
3. The utility model discloses general centre gripping frock makes things convenient for the circulation, reduces the mass loss, and general type printed circuit board centre gripping frock can be used to the circulation of the irregular printing board of appearance, can reduce the collision of circulation in-process product to the fixed of printing board, prevents product surface deformation, fish tail.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a tray structure.
Fig. 3 is a schematic view of the fixing plate structure.
Fig. 4 is a schematic view of a positioning post structure.
Fig. 5 is a schematic view of a support column structure.
Fig. 6 is a schematic view of the positioning mechanism.
Fig. 7 is a schematic view of the support mechanism.
Fig. 8 is a schematic view of a printed circuit board mounting.
Fig. 9 is a schematic view of a circular printed circuit board held 1/4.
Fig. 10 is a schematic view of holding a small high-frequency printed circuit board.
FIG. 11 is a schematic view of the tooling in the equipment track.
Sequence numbers in the upper figure: tray 1, fixed plate 2, reference column 3, support column 4, printed board 5, 1/4 circular printed circuit board 6, small-size high frequency printed circuit board 7, equipment track 8, screw hole 11, centre gripping limit 12, fixed plate major structure 21, double-screw bolt 22, bottom cylinder 31, intermediate level cylinder 32, upper cylinder 33, lower support column 41, upper support column 42.
Detailed Description
The invention will now be further described by way of example with reference to the accompanying drawings.
Example 1
Referring to fig. 1 and 8, a general clamping tool for a printed circuit board includes a tray 1 and more than two sets of positioning and clamping mechanisms.
Referring to fig. 2, the tray 1 is flat, screw holes 11 are uniformly distributed on the tray, and the screw holes 11 are uniformly arranged in rows and columns; the two symmetrical sides are respectively connected with a clamping edge 12, the clamping edge 12 is in an angle steel shape, one side is an upright edge, the other side is a horizontal edge, the lower end of the upright edge is fixedly connected with the tray 1, and the horizontal edge extends outwards to form a clamping end. The top surface of the tray 1 is a working surface, and more than two groups of positioning and clamping mechanisms are fixed on the working surface of the tray 1.
The tray 1 is made of aluminum alloy, and the working surface is a hard anodic oxidation treatment surface, so that the insulativity of the tray is ensured. The bottom surface of the tray 1 is 480mm long, 500mm wide and 6mm high, and the clamping edge 12 is 13mm wide and 3mm thick; screw holes 11 on the tray 1 are arranged in 20 rows and 20 columns according to rows and columns, the screw holes 11 are M4, the distance between two adjacent holes is 20mm, and the overall height of the tray 1 is 33 mm.
Referring to fig. 1, each group of positioning and clamping mechanisms comprises a supporting mechanism and four positioning mechanisms; referring to fig. 7, the supporting mechanism includes a fixed plate 2 and a supporting column 4; referring to fig. 6, the positioning mechanism includes a positioning fixing plate and a positioning post 3; wherein the fixing plate 2 and the positioning fixing plate have the same structure.
Referring to fig. 3, the fixing plate 2 is a strip-shaped short plate, a long waist-shaped hole is formed in the fixing plate 2 in the length direction, and two screws are arranged in the long waist-shaped hole; a stud 22 is fixedly mounted on the fixing plate corresponding to one end of the elongated hole. The fixing plate 2 is fixedly mounted on the tray 1 by screw connection of screws and screw holes 11 on the tray 1.
The fixing plate 2 is made of aluminum alloy, the fixing plate 2 is 40mm long, 8mm wide and 5mm high, the long waist-shaped hole is 30mm long and 4.5mm wide, and the fillet radius is 2.25 mm. The stud 22 is of M3 type and 8mm high.
Referring to fig. 6 and 7, the positioning column 3 is disposed on the fixing plate through the threaded connection with the stud 22, and the supporting column 4 is disposed on the fixing plate through the threaded connection with the stud 22.
Referring to fig. 4, the positioning column 3 is a three-stage step-shaped cylinder, the diameters of which are sequentially reduced from bottom to top, and the positioning column is an upper-layer cylinder 33, a middle cylinder 32 and a bottom-layer cylinder 31, the lower end of the bottom-layer cylinder 31 is provided with a threaded hole, and when the positioning column is used, the upper end of the upper-layer cylinder 33 is matched with a positioning hole in a printed circuit board to be processed.
The positioning column 3 is made of aluminum alloy and is manufactured into three specifications according to the inner diameter of a screw hole of a printed circuit board in actual production:
the first method comprises the following steps: the height of the bottom layer cylinder 31 is 11mm, the diameter of the bottom layer cylinder is 6mm, the threaded hole is M3 type, and the hole depth is 8 mm; the height of the middle cylinder 32 is 5mm, and the diameter is 4 mm; the upper layer cylinder 33 is 5mm high, 2mm in diameter and 0.5mm in radius of the arc chamfer.
And the second method comprises the following steps: the height of the bottom layer cylinder 31 is 11mm, the diameter of the bottom layer cylinder is 6mm, the threaded hole is M3 type, and the hole depth is 8 mm; the height of the middle cylinder 32 is 5mm, and the diameter is 4 mm; the upper layer cylinder 33 is 7mm high, 2.5mm in diameter and 1mm in radius of the arc chamfer.
And the third is that: the height of the bottom layer cylinder 31 is 11mm, the diameter of the bottom layer cylinder is 6mm, the threaded hole is M3 type, and the hole depth is 8 mm; the height of the middle cylinder 32 is 5mm, and the diameter is 5 mm; the upper layer cylinder 33 is 8mm high, 3mm in diameter and 1mm in radius of the arc chamfer.
Referring to fig. 5, the supporting column 4 is a two-stage stepped cylinder, the upper portion is an upper supporting column 42 with a small diameter, the lower portion is a lower supporting column 41 with a large diameter, and the lower end of the lower supporting column 41 is provided with a threaded hole.
The material of the support column 4 is aluminum alloy. The height of the lower support column 41 is 11mm, the diameter of the lower support column is 6mm, the threaded hole is of an M3 model, and the hole depth is 8 mm. The height of the upper supporting column 42 is 6mm, the diameter is 3mm, and the radius of the arc chamfer is 1 mm.
The specific operational specifications for a certain 1/4 circular printed circuit board are as follows:
1. the thickness of the circular printed circuit board 6 and the inner diameter of the screw hole were measured 1/4, the thickness of the 1/4 circular printed circuit board 6 was 4mm, and the inner diameter of the screw hole was 2.5 mm. The positioning column 3 of the second specification is selected, 2 gaskets with the diameter of 1mm are added under the positioning column 3, and 1 gasket with the diameter of 1mm is added under the supporting column 4 in order to keep the 1/4 circular printed circuit board 6 on the same horizontal plane with the equipment for mounting.
2. 1/4 circular printed circuit boards 6 are pre-placed, and 2 pieces are evenly distributed.
3. Referring to fig. 6, the positioning mechanism is assembled; referring to fig. 7, the support mechanism is assembled.
4. Referring to fig. 8, four positioning mechanisms are used to fix the periphery of the pcb, a supporting mechanism is used to support the lower part of the pcb, and the upper ends of the upper supporting pillars 42 contact the bottom surface of the pcb to be processed, so as to avoid contacting components on the back surface of the pcb.
5. The M4 pan head screw is screwed into the tray screw hole 11 through the long kidney-shaped hole on the positioning fixing plate of the positioning mechanism and the fixing plate of the supporting mechanism, namely the positioning mechanism and the supporting mechanism are fixed on the tray 1, as shown in figure 8.
6. And finishing the clamping tool aiming at a certain 1/4 circular printed circuit board 6. A fixture may be used to hold a certain 1/4 circular pcb 6 for circulation, see fig. 9.
Example 2
The structure of the universal clamping tool for the printed circuit board is the same as that of embodiment 1.
The specific operation for a small high frequency printed circuit board is as follows:
1. the thickness and the screw hole inner diameter of the small high-frequency printed circuit board 7 were measured, the thickness of the small high-frequency printed circuit board 7 was 2mm, and the screw hole inner diameter was 2 mm. The positioning columns 3 with the first specification are selected and used, and 4 gaskets with the diameter of 1mm are additionally arranged below the positioning columns 3 so that the printed circuit board is kept on the same horizontal plane with the equipment for mounting.
2. The small high-frequency printed circuit boards 7 are placed in advance, and 4 small high-frequency printed circuit boards 7 are uniformly distributed to form a spliced board.
3. Referring to fig. 6, five positioning mechanisms are assembled.
4. Referring to fig. 7, five positioning mechanisms are used to fix the periphery of one small high-frequency printed circuit board 7, and the small high-frequency printed circuit board 7 has a small area, so that a support mechanism is not used.
5. Referring to fig. 8, the M4 pan head screw is screwed into the tray screw hole 11 through the long kidney hole on the positioning fixing plate, i.e. the positioning mechanism is fixed on the tray 1.
6. The clamping assembly of the small high-frequency printed circuit boards 7 is completed, and the tool can clamp 4 small high-frequency printed circuit boards 7 at a time, as shown in figure 10. The small high-frequency printed circuit board 7 can be clamped by a tool for mounting on a machine, as shown in fig. 11.
The above description is not intended to limit the present invention in any way on its structure or shape. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all still fall within the scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a general centre gripping frock of printed circuit board which characterized in that: comprises a tray (1) and more than two groups of positioning and clamping mechanisms; the tray (1) is flat, screw holes (11) are uniformly distributed on the tray, and clamping edges (12) are respectively arranged on two symmetrical sides of the tray; the top surface of the tray (1) is a working surface, and more than two groups of positioning and clamping mechanisms are fixed on the working surface of the tray (1); each group of positioning and clamping mechanisms comprises at least two positioning mechanisms; the positioning mechanism comprises a positioning fixing plate and a positioning column (3);
when the positioning and clamping device is used, each printed circuit board is fixed on the tray (1) through a group of positioning and clamping mechanisms.
2. The universal clamping tool for the printed circuit board according to claim 1, wherein the universal clamping tool comprises: the clamping edge (12) of the tray (1) is in an angle steel shape, one side of the clamping edge is an upright edge, the other side of the clamping edge is a horizontal edge, the lower end of the upright edge is fixedly connected with the tray (1), and the horizontal edge extends outwards to form a clamping end.
3. The universal clamping tool for the printed circuit board according to claim 1, wherein the universal clamping tool comprises: screw holes (11) on the tray (1) are uniformly arranged in rows and columns.
4. The universal clamping tool for the printed circuit board according to claim 1, wherein the universal clamping tool comprises: the working surface of the tray (1) is a hard anodic oxidation treatment surface.
5. The universal clamping tool for the printed circuit board according to claim 1, wherein the universal clamping tool comprises: the positioning fixing plate is a strip-shaped short plate, a long waist-shaped hole is formed in the length direction of the positioning fixing plate, and two screws are arranged in the long waist-shaped hole; a stud (22) is fixedly arranged on the positioning fixing plate corresponding to one end of the long waist-shaped hole, and the positioning column (3) or the supporting column (4) is arranged on the positioning fixing plate through the threaded connection with the stud (22); the positioning fixing plate is fixedly arranged on the tray (1) through the threaded connection of the screw and the screw hole (11) on the tray (1).
6. The universal clamping tool for the printed circuit board according to claim 1 or 5, wherein the universal clamping tool comprises: the positioning column (3) is a cylinder with three-stage ladder shape, the diameters of the positioning column are sequentially reduced from bottom to top and respectively comprise an upper-layer cylinder (33), a middle cylinder (32) and a bottom-layer cylinder (31), the lower end of the bottom-layer cylinder (31) is provided with a threaded hole, and during use, the upper end of the upper-layer cylinder (33) is matched with a positioning hole in a processed printed circuit board.
7. The universal clamping tool for the printed circuit board according to claim 1, wherein the universal clamping tool comprises: each group of positioning and clamping mechanisms also comprises at least one supporting mechanism, and each supporting mechanism comprises a fixed plate and a supporting column (4); the fixing plate and the positioning fixing plate are identical in structure.
8. The universal clamping tool for the printed circuit board according to claim 7, wherein: the support column (4) is a cylinder with a secondary ladder shape, the upper portion is an upper support column (42) with a small diameter, the lower portion is a lower support column (41) with a large diameter, a threaded hole is formed in the lower end of the lower support column (41), and during use, the upper end of the upper support column (42) is in contact with the bottom surface of a processed printed circuit board.
9. The universal clamping tool for the printed circuit board according to claim 1, wherein the universal clamping tool comprises: the universal clamping tool is made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921150844.9U CN210588890U (en) | 2019-07-22 | 2019-07-22 | General centre gripping frock of printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921150844.9U CN210588890U (en) | 2019-07-22 | 2019-07-22 | General centre gripping frock of printed circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN210588890U true CN210588890U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921150844.9U Active CN210588890U (en) | 2019-07-22 | 2019-07-22 | General centre gripping frock of printed circuit board |
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| CN (1) | CN210588890U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328627A (en) * | 2019-07-22 | 2019-10-15 | 中国电子科技集团公司第三十八研究所 | A kind of universal clipping tooling of printed circuit board |
-
2019
- 2019-07-22 CN CN201921150844.9U patent/CN210588890U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328627A (en) * | 2019-07-22 | 2019-10-15 | 中国电子科技集团公司第三十八研究所 | A kind of universal clipping tooling of printed circuit board |
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