CN218388135U

CN218388135U - Fixing jig for printed circuit board

Info

Publication number: CN218388135U
Application number: CN202222623368.6U
Authority: CN
Inventors: 张义平; 黄利声; 聂超华
Original assignee: United Automotive Electronic Systems Chongqing Co Ltd
Current assignee: United Automotive Electronic Systems Chongqing Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-24
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a fixed tool is used to printed circuit board, including the bottom surface have positioning mechanism the base, with the base can be dismantled the connection and locate the fixed plate of base top, locate be used for on the fixed plate with the fixed vacuum adsorption mechanism of printed circuit board and locate on the fixed plate in order to be used for dodging a plurality of aversion grooves of corresponding components and parts on the printed circuit board, will through positioning mechanism the base can be dismantled with tin cream printing machine and be connected, have on the base one with the suction mouth that vacuum adsorption mechanism connects, vacuum adsorption mechanism include with the vacuum generator of suction mouth intercommunication, locate on the base and with the vacuum groove that the suction mouth is linked together and with the vacuum groove is linked together and locates a plurality of absorption holes on the fixed plate need not to carry out the clamping of circuit board, simplifies the operation step and practices thrift the time of fixed circuit board, and fixed without the centre gripping, and adopt vacuum adsorption fixed, can also have the effect that the protection circuit board avoids warping.

Description

Fixing jig for printed circuit board

Technical Field

The utility model belongs to the technical field of the circuit board processing, concretely relates to fixed tool is used to printed circuit board.

Background

An Electronic Control Unit (ECU) is one of the cores of an automobile control system, is the same as a common computer, consists of a Microprocessor (MCU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (A/D), a shaping circuit, a driving circuit and other large-scale integrated circuits, and is simply called as the ECU which is the brain of the automobile. Because of the high precision and multifunctional manufacturing requirements of the circuit board, the solder paste printing of the circuit board by using a solder paste printer is an essential step, and the circuit board needs to be fixed in the printing process.

Traditional circuit board is fixed, fixes a position through some mechanical fixture usually, needs the manual clamping circuit board through the staff, and troublesome poeration, this kind of slim piece of circuit board still is out of shape by the anchor clamps centre gripping easily moreover, influences the circuit board quality.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems that in the prior art, a mechanical clamp is used for clamping a circuit board, on one hand, the operation is troublesome, and the processing efficiency is influenced; on the other hand is fixed by the anchor clamps centre gripping, causes the technical problem that slim circuit board warp easily, the utility model provides a fixed tool is used to printed circuit board.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a fixed tool for printed circuit board, including the bottom surface have positioning mechanism the base, with the base can be dismantled the connection and locate the fixed plate of base top, locate be used for on the fixed plate with the fixed vacuum adsorption mechanism of printed circuit board and locate on the fixed plate in order to be used for dodging a plurality of spacing grooves of keeping away of corresponding components and parts on the printed circuit board, through positioning mechanism will the base can be dismantled with the tin cream printing machine and be connected, have on the base one with the suction mouth that the vacuum adsorption mechanism is connected, the vacuum adsorption mechanism include with the vacuum generator of suction mouth intercommunication, locate on the base and with the vacuum tank that the suction mouth is linked together and with a plurality of absorption holes on the fixed plate are linked together and locate.

Furthermore, the top surface of the fixing plate is provided with a sunken groove sunken towards the direction of the base, a partition part is arranged in the sunken groove, and the inner space of the sunken groove is divided into two avoiding grooves with the same structure.

Furthermore, at least three adsorption holes are distributed outside the avoidance groove and are positioned on one longitudinal side of the avoidance groove, and the adsorption holes are distributed at intervals; an adsorption hole is also distributed outside the avoiding groove and is positioned on the other longitudinal side of the avoiding groove.

Furthermore, a first bulge with a top surface flush with the top surface of the fixing plate is fixedly arranged in each of the two avoiding grooves, the first bulge is arranged on one lateral side of the avoiding groove, two adsorption holes are distributed on the first bulge at intervals, and the avoiding groove is also provided with a second bulge which is distributed adjacent to the first bulge; keep away the horizontal opposite side rigid coupling of position groove have the top surface with the third arch and the fourth arch of fixed plate top surface parallel and level, be equipped with at least two absorption holes that the interval was arranged in the third arch, the fourth arch is close to the protruding distribution of third.

Further, the third arch with fourth bellied one side is equipped with the fifth arch, two at least absorption holes have been arranged at the interval in the fifth arch, fifth bellied one side is equipped with the sixth arch, the horizontal one side of sixth arch is equipped with the seventh arch, the vertical one side of sixth arch is equipped with the eighth arch, keep away the position groove and still the rigid coupling have the protruding neighbouring of round platform the vertical opposite side of sixth arch distributes.

Further, fifth protruding fore-and-aft one side be equipped with the top surface with the L type of fixed plate parallel and level is protruding, the protruding horizontal one side of L type is equipped with the square platform arch, be equipped with an absorption hole in the square platform arch.

Furthermore, a guide mark is arranged in one of the avoiding grooves.

Furthermore, the top surface of the fixing plate is fixedly connected with two side bosses which are respectively arranged on two transverse sides of the fixing plate, and the side bosses are adjacent to the edge of the avoiding groove.

Furthermore, the vacuum groove is a cavity formed from the top surface to the bottom surface of the base, the base is provided with a plurality of screw holes distributed around the vacuum groove, the corresponding position of the fixing plate is also provided with screw holes, and the base is connected with the fixing plate by bolts and the screw holes in threaded connection.

Furthermore, the positioning mechanism comprises two positioning holes respectively arranged at two sides of the suction opening and a positioning pin, one end of the positioning pin is clamped with the positioning holes, and the other end of the positioning pin is exposed out of the outer surfaces of the positioning holes.

To sum up, the beneficial effects of the utility model are that: this fixed tool, one of them, the electric elements who corresponds on the circuit board is arranged in and keeps away the inslot protection back, has the absorption hole in keeping away the inslot, has the absorption hole around keeping away the inslot periphery also, from the evacuation of suction port department, utilizes the vacuum adsorption mode fixed circuit board, no longer carries out the clamping circuit board with anchor clamps, practices thrift process time, simplifies operation steps, can also protect slim circuit board like this, avoids being held the deformation. And secondly, the distribution of a plurality of adsorption holes is inside and outside the avoidance groove, and the adsorption circuit board can be more comprehensive and has better fixing effect by arranging along the transverse and longitudinal directions of the circuit board. Thirdly, keep away the interior distribution of position groove and have a plurality of components and parts positions of can keeping away, but can give the arch that the circuit board contact supported again, when avoiding adsorbing, the suction is too big, and the too spacious position groove of keeping away causes slim circuit board to warp easily.

Drawings

Fig. 1 is a schematic structural view of a fixing jig for a printed circuit board according to the present invention.

Fig. 2 is a schematic structural diagram of the top surface of the base of the present invention.

Fig. 3 is a schematic structural view of the bottom surface of the base of the present invention.

In the figure, 100-base, 110-suction port, 120-screw hole, 130-weight-reducing groove, 200-fixing plate, 210-separating part, 220-avoiding groove, 221-first protrusion, 222-second protrusion, 223-third protrusion, 224-fourth protrusion, 225-fifth protrusion, 226-sixth protrusion, 227-seventh protrusion, 228-eighth protrusion, 229-circular table protrusion, 230-L-shaped protrusion, 240-square table protrusion, 250-guide mark, 260-side protrusion, 310-vacuum groove, 320-adsorption hole, 400-positioning pin and 500-first auxiliary protrusion.

Detailed Description

The present invention will be further described with reference to the following specific drawings.

As shown in fig. 1, the utility model provides a fixed tool for printed circuit board, including the bottom surface have positioning mechanism the base 100, with the base 100 can be dismantled the connection and locate the fixed plate 200 of base 100 top, locate be used for on the fixed plate 200 with the fixed vacuum adsorption mechanism of printed circuit board and locate on the fixed plate 200 in order to be used for dodging a plurality of groove 220 of keeping away of corresponding components and parts on the printed circuit board. The base 100 is detachably connected with the solder paste printing machine through the positioning mechanism, the base 100 is provided with a suction port 110 connected with the vacuum adsorption mechanism, and the vacuum adsorption mechanism comprises a vacuum generator communicated with the suction port 110, a vacuum groove 310 arranged on the base 100 and communicated with the suction port 110, and a plurality of adsorption holes 320 communicated with the vacuum groove 310 and arranged on the fixing plate 200. When the circuit board is printed with solder paste, the circuit board to be printed is placed on the surface of the fixing plate 200, and the circuit board is fixed by using the adsorption holes 320 in a vacuum adsorption mode without clamping the circuit board, so that the operation steps are simplified, and the time for fixing the circuit board is saved. After the avoiding groove 220 is used for protecting the corresponding electronic component on the circuit board, the electronic component is not clamped and fixed, but is fixed by vacuum adsorption, and the avoiding groove can also have the function of protecting the circuit board from deformation.

In order to avoid the deformation of the base 100 and prolong the service life of the jig, the base 100 and the fixing plate 200 are preferably made of metal, such as aluminum. As shown in fig. 3, two weight-reducing grooves 130 are formed on the bottom surface of the base 100 and are recessed toward the top surface of the base 100, and the two weight-reducing grooves 130 are respectively located at two sides of the suction opening 110. Therefore, the weight of the base 100 can be reduced, and the fixing jig is convenient to move or transport.

As shown in fig. 2, the vacuum groove 310 is a cavity formed from the top surface to the bottom surface of the base 100, and the vacuum generator may be a vacuum pump (not shown) which is communicated with the suction port 110, and then the vacuum groove 310 is communicated with the plurality of suction holes 320, so that the negative pressure can be more rapidly transmitted to the suction holes 320 when the vacuum is sucked, thereby firmly sucking and fixing the circuit board.

The base 100 is provided with a plurality of screw holes 120 distributed around the vacuum groove 310, and the fixing plate 200 is also provided with screw holes 120 at positions corresponding thereto, and the base 100 is connected to the fixing plate 200 by screwing the screw holes 120 with bolts. If one of the two is damaged, the screw joint can be conveniently disassembled, and the parts can be conveniently replaced.

The positioning mechanism includes two positioning holes respectively disposed at two sides of the suction opening 110 and a positioning pin 400 having one end engaged with the positioning holes and the other end exposed to the outer surfaces of the positioning holes. The corresponding position on the workbench of the solder paste printer is also provided with a positioning hole, and the base 100 and the solder paste printer can insert the positioning pin 400 into the positioning hole on the workbench, so that the assembly and disassembly are convenient.

The top surface of the fixing plate 200 has a concave groove recessed toward the base 100, and a partition 210 is provided in the concave groove to divide the inner space of the concave groove into two avoiding grooves 220 having the same structure. At least three adsorption holes 320 are distributed outside the avoiding groove 220 and located on one longitudinal side of the avoiding groove 220, and the adsorption holes 320 are arranged at intervals. An adsorption hole 320 is further distributed outside the avoiding groove 220, and the adsorption hole 320 is located on the other longitudinal side of the avoiding groove 220. When the circuit board is placed on the fixing plate 200, the circuit board is fixed by the suction holes 320 at both longitudinal sides.

The two avoiding grooves 220 are respectively and fixedly provided with a first bulge 221, the top surface of each first bulge 221 is flush with the top surface of the fixing plate 200, the first bulges 221 are arranged on one lateral side of the avoiding grooves 220, two adsorption holes 320 are distributed on the first bulges 221 at intervals, and the avoiding grooves 220 are also provided with second bulges 222 which are distributed near the first bulges 221. Keep away the horizontal opposite side rigid coupling of position groove 220 have the top surface with third arch 223 and fourth arch 224 of fixed plate 200 top surface parallel and level, be equipped with two at least absorption holes 320 of arranging at interval on the third arch 223, fourth arch 224 is close to third arch 223 distributes. And the horizontal both sides of circuit board have the absorption hole 320 on first arch 221 and the absorption hole 320 on third arch 223 to fix, all locate absorption hole 320 and adsorb the circuit board in horizontal vertical direction, firm stable fixing needs the printed circuit board.

One side of the third protrusion 223 and the fourth protrusion 224 is provided with a fifth protrusion 225, at least two adsorption holes 320 are arranged on the fifth protrusion 225 at intervals, one side of the fifth protrusion 225 is provided with a sixth protrusion 226, and the sixth protrusion 226 is similar to an inverted 'F' -shaped structure. A seventh protrusion 227 is disposed on one lateral side of the sixth protrusion 226, an eighth protrusion 228 is disposed on one longitudinal side of the sixth protrusion 226, and the avoiding groove 220 is further fixedly connected with a circular truncated cone protrusion 229 which is distributed adjacent to the other longitudinal side of the sixth protrusion 226. Fifth arch 225 longitudinal one side be equipped with the top surface with the fixed plate 200 parallel and level LL type is protruding 230, the protruding 230 horizontal one side of LL type is equipped with square platform arch 240, be equipped with an absorption hole 320 on the square platform arch 240. The adsorption holes 320 on the square platform protrusions 240 play a role in adsorption and reinforcement, and the second protrusions 222, the fourth protrusions 224, the sixth protrusions 226, the seventh protrusions 227, the eighth protrusions 228, the circular platform protrusions 229, the L-shaped protrusions 230 and the square platform protrusions 240 which are flush with the top surface of the fixing plate 200 can stably support the circuit board after avoiding electronic components, so that the stability of the circuit board can be improved during adsorption. A first auxiliary bump 500 with the same shape as the second bump 222 is arranged near the L-shaped bump 230, a second auxiliary bump is arranged near the square platform bump 240 near the edge of the clearance groove 220, the structure is also the same as the second bump 222, and the circuit board is supported near the square platform bump 240.

The top surface of the fixing plate 200 is fixedly connected with two side bosses 260, the side bosses 260 are respectively arranged at two transverse sides of the fixing plate 200, and the side bosses 260 are adjacent to the edge of the avoiding groove 220. When the circuit board is placed on the fixing plate 200 during processing, the side bosses 260 higher than the top surface of the fixing plate 200 form limit positions at the two transverse ends of the circuit board, so that the circuit board is prevented from moving transversely when placed, and the circuit board is primarily positioned before adsorption and fixation.

One of them keep away and be equipped with direction sign 250 in the groove 220, through the direction of direction sign 250, the staff of being convenient for that can be quick confirms the circuit board fast and puts the direction to and when installation base 100, also can directly perceivedly distinguish positioning mechanism's the position that sets up through observing direction sign 250.

In the fixing jig, after the corresponding electric elements on the circuit board are arranged in the avoiding groove 220 for protection, the adsorbing holes 320 are arranged in the avoiding groove 220, the adsorbing holes 320 are also arranged around the periphery of the avoiding groove 220, the vacuum is pumped from the suction port 110, the circuit board is fixed by using a vacuum adsorbing mode, the circuit board is not clamped by using a clamp, the processing time is saved, the operation steps are simplified, and in addition, the thin circuit board can be protected to avoid being clamped and deformed. Secondly, the distribution of a plurality of absorption holes 320 keeps away the groove 220 and all has inside and outside, is all having the setting along the horizontal and vertical direction of circuit board moreover, and absorption circuit board that can be more comprehensive, fixed effect is better. Thirdly, a plurality of protrusions which can avoid the positions of the components and parts and can support the circuit board in a contact manner are distributed in the avoiding groove 220, so that when the circuit board is prevented from being adsorbed, the attractive force is too large, and the thin circuit board is easily deformed due to the excessively empty avoiding groove.

The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings are directly or indirectly applied to other related technical fields, all the same principle is within the patent protection scope of the present invention.

Claims

1. The utility model provides a fixed tool is used to printed circuit board which characterized in that: have positioning mechanism's base, with the base can be dismantled to be connected and locate the fixed plate of base top, locate be used for on the fixed plate with the fixed vacuum adsorption mechanism of printed circuit board and locate in order to be used for dodging a plurality of groove of keeping away that correspond components and parts on the printed circuit board on the fixed plate, through positioning mechanism will the base can be dismantled with the tin cream printing machine and be connected, have on the base one with the suction mouth that vacuum adsorption mechanism connects, vacuum adsorption mechanism include with the vacuum generator of suction mouth intercommunication, locate on the base and with the vacuum tank that the suction mouth is linked together and with the vacuum tank is linked together and locates a plurality of absorption holes on the fixed plate.

2. The fixing jig for the printed circuit board according to claim 1, wherein: the top surface of the fixing plate is provided with a sunken groove sunken towards the direction of the base, a partition part is arranged in the sunken groove, and the inner space of the sunken groove is divided into two avoiding grooves with the same structure.

3. The fixing jig for the printed circuit board according to claim 2, wherein: the at least three adsorption holes are distributed outside the avoiding groove and are positioned on one longitudinal side of the avoiding groove, and the adsorption holes are distributed at intervals; an adsorption hole is also distributed outside the avoiding groove and is positioned on the other longitudinal side of the avoiding groove.

4. The fixing jig for the printed circuit board according to claim 2, wherein: the two avoiding grooves are respectively and fixedly provided with a first bulge, the top surface of each first bulge is flush with the top surface of the fixing plate, the first bulge is arranged on one transverse side of each avoiding groove, two adsorption holes which are distributed at intervals are distributed on the first bulge, and the avoiding grooves are also provided with second bulges which are distributed adjacent to the first bulges; keep away horizontal opposite side rigid coupling of position groove have the top surface with the third arch and the fourth arch of fixed plate top surface parallel and level, be equipped with two at least absorption holes of arranging at interval in the third arch, the fourth arch is close to the protruding distribution of third.

5. The fixing jig for the printed circuit board according to claim 4, wherein: the third protruding with the bellied one side of fourth is equipped with the fifth arch, two at least absorption holes of interval arrangement in the fifth arch, the bellied one side of fifth is equipped with the sixth arch, the horizontal one side of sixth arch is equipped with the seventh arch, the vertical one side of sixth arch is equipped with the eighth arch, keep away the position groove still the rigid coupling have the protruding neighbouring of round platform the vertical opposite side of sixth arch distributes.

6. The fixing jig for the printed circuit board according to claim 5, wherein: fifth protruding fore-and-aft one side be equipped with the top surface with the L type of fixed plate parallel and level is protruding, the protruding horizontal one side of L type is equipped with the square platform arch, be equipped with an absorption hole in the square platform arch.

7. The fixing jig for the printed circuit board according to claim 2, wherein: and a guide mark is arranged in one of the avoiding grooves.

8. The fixing jig for the printed circuit board according to claim 2, wherein: the top surface of the fixed plate is fixedly connected with two side bosses which are respectively arranged at two transverse sides of the fixed plate, and the side bosses are adjacent to the edge of the avoidance groove.

9. The fixing jig for the printed circuit board according to any one of claims 1 to 8, wherein: the vacuum groove is a cavity formed from the top surface to the bottom surface of the base, the base is provided with a plurality of screw holes distributed around the vacuum groove, the corresponding position of the fixing plate is also provided with screw holes, and the base is connected with the fixing plate by bolts and the screw holes in threaded connection.

10. The fixing jig for the printed circuit board according to claim 9, wherein: the positioning mechanism comprises two positioning holes respectively arranged at two sides of the suction opening and a positioning pin, one end of the positioning pin is clamped with the positioning holes, and the other end of the positioning pin is exposed out of the outer surfaces of the positioning holes.