CN221043369U

CN221043369U - Positioning jig for PCBA production

Info

Publication number: CN221043369U
Application number: CN202322447448.5U
Authority: CN
Inventors: 王国锋
Original assignee: Shenzhen Wstianmao Technology Co ltd
Current assignee: Shenzhen Wstianmao Technology Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-05-28
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a positioning jig for PCBA production, which comprises a bearing plate, an adsorption device, an elastic clamping mechanism and a supporting base, wherein the bearing plate is arranged on the bearing plate; the bearing plate is provided with a containing groove for positioning and placing the PCBA, and the elastic clamping mechanism is arranged around the peripheral wall of the supporting base so as to clamp the PCBA in the containing groove laterally; the adsorption device adsorbs PCBA in the accommodating groove through negative pressure, the elastic clamping mechanism comprises a clamping column, a push block, an elastic piece and a positioning screw rod, the top of the push block is provided with the clamping column, and the elastic piece is used for applying elastic tension to the push block so as to enable the clamping column to be abutted against the side wall of the PCBA in the accommodating groove; when the PCBA needs to be fixed, the elastic clamping mechanism can stably clamp the peripheral wall of the PCBA through elastic tension, so that the PCBA is prevented from transversely shifting in the positioning processing process, and the welding precision between the electronic element and the PCBA is improved; has the advantages of convenient and accurate positioning, high stability and the like.

Description

Positioning jig for PCBA production

Technical Field

The utility model relates to the field of positioning jigs, in particular to a positioning jig for PCBA production.

Background

When the PCBA printed circuit board is produced and processed, the PCBA is usually placed on a carrier for positioning, then solder paste is printed on the PCBA at the place where the electronic element needs to be welded, the electronic element is placed at the corresponding position on the PCBA, and finally the PCBA in which the electronic element is placed is enabled to pass through a welding machine, so that the solder paste is fused and adhered at the positions of the pins of the electronic element and the connecting pads of the PCBA at high temperature, and the fixing effect of electric connection is achieved.

In the prior art, the traditional positioning carrier is often provided with a groove for placing the PCBA on the top surface of the positioning carrier, a vacuum chuck is arranged in the groove to adsorb the PCBA, the stability effect of the positioning mode is poor, the phenomenon of PCBA transverse offset easily occurs in the processing process, the problem of inaccurate positioning of an electronic element during welding is caused, and the production quality of the PCBA is influenced.

Accordingly, the prior art has drawbacks and needs improvement.

Disclosure of utility model

The technical problems to be solved by the utility model are as follows: the positioning jig for PCBA production is good in fixing effect and capable of improving machining quality.

To achieve the purpose, the utility model adopts the following technical scheme:

A positioning jig for PCBA production comprises a bearing plate, an adsorption device, an elastic clamping mechanism and a supporting base;

The bearing plate is provided with a containing groove for positioning and placing the PCBA;

The supporting base is positioned below the bearing plate, and the elastic clamping mechanism is arranged around the peripheral wall of the supporting base so as to clamp the PCBA in the accommodating groove laterally;

The adsorption device is arranged in the accommodating groove so as to adsorb PCBA in the accommodating groove through negative pressure;

the elastic clamping mechanism comprises a push block, an elastic piece and a positioning screw rod;

The push block is connected to the peripheral wall of the supporting base through the positioning screw rod, the positioning screw rod is perpendicular to the peripheral wall of the supporting base, the push block can slide along the length direction of the positioning screw rod, the top of the push block is provided with a clamping column, and the elastic piece is used for applying elastic tension to the push block so that the clamping column is abutted against the PCBA side wall in the accommodating groove.

By adopting the technical scheme, in the positioning jig for PCBA production, the elastic clamping mechanism further comprises an air cylinder and a thimble, and the movable end of the air cylinder is connected with the thimble;

The cylinder is arranged on the supporting base at the inner side of the push block and is used for driving the ejector pin to be abutted with the inner wall of the push block so as to overcome the elastic tension of the elastic piece and enable the clamping column to move in a direction away from the PCBA.

Adopt above-mentioned each technical scheme, in the positioning jig for PCBA production, the perisporium of loading board is equipped with the spout, spout and holding tank intercommunication, for the clamp column removes along the spout and with the lateral wall looks butt of PCBA or keep away from.

Adopt above-mentioned each technical scheme, in the positioning jig for PCBA production, be equipped with first spliced pole on the support base, be equipped with the second spliced pole on the ejector pad, be connected through the elastic component between first spliced pole and the second spliced pole.

By adopting the technical schemes, in the positioning jig for PCBA production, the inner cavity groove for installing the adsorption device is arranged in the accommodating groove.

By adopting the technical schemes, in the positioning jig for PCBA production, the adsorption device is a suction nozzle.

By adopting the technical schemes, in the positioning jig for PCBA production, the clamping column sleeve is provided with the rubber sheath.

By adopting the technical schemes, in the positioning jig for PCBA production, the ejector pin is provided with an arc-shaped bulge towards one end of the push block.

By adopting the technical schemes, in the positioning jig for PCBA production, the elastic piece is an extension spring.

Adopt above-mentioned each technical scheme, still including buffer spring, buffer spring's one end is connected with the support base, buffer spring's the other end and loading board butt.

Compared with the prior art, the utility model has the following beneficial effects: the accommodating groove on the bearing plate can be used for accommodating the PCBA, and when the PCBA is required to be fixed, the elastic clamping mechanism can stably clamp the peripheral wall of the PCBA through elastic tension, so that the PCBA is prevented from transversely shifting in the positioning processing process, the welding precision between the electronic element and the PCBA is improved, and the production quality is improved; when the PCBA is required to be disassembled, the air cylinder of the elastic clamping mechanism drives the pushing block to push outwards, so that the clamping column and the PCBA are clamped and loosened, and the device is convenient and efficient; in addition, the adsorption device adsorbs PCBA in the accommodating groove through negative pressure, so that the PCBA is prevented from warping in the clamping process; has the advantages of simple structure, convenient and accurate positioning, high stability and the like.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the utility model, without affecting the effect or achievement of the objective.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of an exploded view of the elastic clamping mechanism of the present utility model;

fig. 3 is a schematic view of a carrier structure according to the present utility model.

Illustration of: 1. a carrying plate; 10. a receiving groove; 11. a chute; 100. an inner cavity groove; 2. an adsorption device; 3. an elastic clamping mechanism; 31. clamping the column; 311. a rubber sheath; 32. a pushing block; 321. a second connection post; 33. an elastic member; 34. positioning a screw; 35. a cylinder; 36. a thimble; 361. arc-shaped bulges; 4. a support base; 41. a first connection post; 5. and a buffer spring.

Detailed Description

In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions in the embodiments of the present utility model are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a positioning jig for PCBA production, which includes a carrier plate 1, an adsorption device 2, an elastic clamping mechanism 3, and a support base 4.

The bearing plate 1 is provided with a containing groove 10 for positioning and placing the PCBA, and the size of the containing groove 10 is matched with the size of the PCBA so that the PCBA can be placed in the containing groove 10 smoothly.

The supporting base 4 is located below the bearing plate 1, and the elastic clamping mechanism 3 is arranged around the peripheral wall of the supporting base 4 so as to clamp the PCBA in the accommodating groove 10 laterally. After the PCBA is placed into the accommodating groove 10, the elastic clamping mechanism 3 can stably clamp the peripheral wall of the PCBA through elastic tension, so that the PCBA is prevented from being transversely deviated in the positioning processing process, the welding precision between the electronic component and the PCBA is improved, and the production quality is improved.

The adsorption device 2 is arranged in the accommodating groove 10 to adsorb PCBA in the accommodating groove 10 by negative pressure. It should be noted that, the elastic clamping mechanism 3 can apply pressure to the peripheral wall of the PCBA to clamp, so as to avoid the PCBA from horizontal offset, and the adsorption device 2 adsorbs the PCBA in the accommodating groove 10 by negative pressure, so that the PCBA can be prevented from bending or warping during the clamping process.

As shown in fig. 1 and 2, the elastic clamping mechanism 3 includes a push block 32, an elastic member 33 and a positioning screw 34, the push block 32 is connected to the peripheral wall of the support base 4 by the positioning screw 34, the positioning screw 34 is perpendicular to the peripheral wall of the support base 4, the push block 32 can slide along the length direction of the positioning screw 34, the top of the push block 32 is provided with a clamping column 31, and the elastic member 33 is used for applying elastic tension to the push block 32 so that the clamping column 31 abuts against the PCBA side wall in the accommodating groove 10. Specifically, the elastic member 33 applies a pulling force to the push block 32 toward the inner side of the accommodating groove 10, so that the clamping post 31 on the push block 32 is urged to abut against the side wall of the PCBA, thereby realizing the clamping of the PCBA.

Further, the elastic clamping mechanism 3 further includes an air cylinder 35 and an ejector pin 36, the movable end of the air cylinder 35 is connected with the ejector pin 36, the air cylinder 35 is disposed on the support base 4 inside the push block 32, and the air cylinder 35 is used for driving the ejector pin 36 to abut against the inner wall of the push block 32 so as to overcome the elastic tension of the elastic member 33 and move the clamping column 31 in a direction away from the PCBA. When the PCBA is required to be disassembled from the accommodating groove 10 after being machined, the air cylinder 35 of the elastic clamping mechanism 3 can drive the pushing block 32 to push outwards, so that the clamping column 31 and the PCBA are clamped and loosened, and the PCBA is convenient to take out quickly by a worker and convenient and efficient to operate.

As shown in fig. 1 and 3, further, a chute 11 is provided on the peripheral wall of the carrier plate 1, and the chute 11 is communicated with the accommodating groove 10, so that the clamping post 31 moves along the chute 11 and abuts against or is away from the sidewall of the PCBA. The chute 11 can limit the moving travel of the clamping column 31 so as to improve the stability of the clamping column 31 in abutting connection or moving away from the PCBA, and avoid shaking of the clamping column 31 in the moving process, thereby affecting the clamping effect on the PCBA.

As shown in fig. 1, further, the support base 4 is provided with a first connection post 41, the push block 32 is provided with a second connection post 321, and the first connection post 41 is connected with the second connection post 321 through an elastic member 33. In this embodiment, the first end of the elastic member 33 is connected to the first connecting post 41, and the second end of the elastic member 33 is connected to the second connecting post 321, and since the push block 32 is connected to the peripheral wall of the support base 4 through the positioning screw 34, and the push block 32 can slide along the length direction of the positioning screw 34, the arrangement is such that the push block 32 moves along the positioning screw 34 toward the side end of the first connecting post 41 under the elastic tension of the elastic member 33, so as to promote the clamping post 31 to clamp on the PCBA side wall.

As shown in fig. 1 and 3, further, an inner cavity groove 100 for installing the adsorption device 2 is provided in the accommodating groove 10. The inner cavity groove 100 may provide an assembling space for installing the adsorption device 2, and it should be noted that the accommodating groove 10 has a certain depth, and when the adsorption device 2 is installed in the inner cavity groove 100, a distance between a top surface of the adsorption device 2 and the accommodating groove 10 is smaller than the depth of the accommodating groove 10.

Further, the adsorption device 2 is a suction nozzle.

In this embodiment, the suction nozzle bottom is connected with external vacuum source, and when vacuum source produced the negative pressure, the suction nozzle was adsorbed PCBA bottom, prevented PCBA from accomplishing the warpage in clamping process.

Further, the clamping post 31 is sleeved with a rubber sheath 311. The rubber sheath 311 can prevent the clamping post 31 from damaging the PCBA side wall in the clamping process.

As shown in fig. 2, further, an end of the ejector pin 36 facing the push block 32 is provided with an arc-shaped protrusion 361. Because the push block 32 can incline around the positioning screw 34 by a certain angle under the elastic tension, the arrangement of the arc-shaped protrusion 361 can ensure that the thimble 36 can be fully contacted with the inclined surface of the push block 32, thereby the air cylinder 35 can smoothly drive the push block 32 to move towards the direction away from the PCBA side.

Further, the elastic member 33 is an extension spring.

As shown in fig. 1, further, the positioning fixture further comprises a buffer spring 5, one end of the buffer spring 5 is connected with the support base 4, and the other end of the buffer spring 5 is abutted to the bearing plate 1. Because PCBA can bear certain pressure in the course of working, buffer spring 5's setting for PCBA accessible elastic deformation absorbs and disperses energy when receiving the impact effort, with the transmission of reduction impact force, reaches the effect of protection PCBA.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The positioning jig for PCBA production is characterized by comprising a bearing plate (1), an adsorption device (2), an elastic clamping mechanism (3) and a supporting base (4);

The bearing plate (1) is provided with a containing groove (10) for positioning and placing PCBA;

The supporting base (4) is positioned below the bearing plate (1), and the elastic clamping mechanism (3) is arranged around the peripheral wall of the supporting base (4) so as to clamp the PCBA in the accommodating groove (10) laterally;

The adsorption device (2) is arranged in the accommodating groove (10) so as to adsorb PCBA in the accommodating groove (10) through negative pressure;

the elastic clamping mechanism (3) comprises a push block (32), an elastic piece (33) and a positioning screw rod (34);

The push block (32) is connected to the peripheral wall of the supporting base (4) through the positioning screw (34), the positioning screw (34) is perpendicular to the peripheral wall of the supporting base (4), the push block (32) can slide along the length direction of the positioning screw (34), the top of the push block (32) is provided with the clamping column (31), and the elastic piece (33) is used for applying elastic tension to the push block (32) so that the clamping column (31) is abutted against the PCBA side wall in the accommodating groove (10).

2. The positioning jig for PCBA production according to claim 1, characterized in that the elastic clamping mechanism (3) further comprises a cylinder (35) and a thimble (36), the movable end of the cylinder (35) is connected with the thimble (36);

The cylinder (35) is arranged on the supporting base (4) at the inner side of the push block (32), and the cylinder (35) is used for driving the thimble (36) to be abutted with the inner wall of the push block (32) so as to overcome the elastic tension of the elastic piece (33) and enable the clamping column (31) to move in a direction away from the PCBA.

3. Positioning jig for PCBA production according to claim 2, characterized in that the peripheral wall of the carrier plate (1) is provided with a chute (11), the chute (11) being in communication with the containing groove (10) for the clamping column (31) to move along the chute (11) and to abut against or be distanced from the side wall of the PCBA.

4. A positioning jig for PCBA production according to claim 1, characterized in that the support base (4) is provided with a first connecting post (41), the push block (32) is provided with a second connecting post (321), and the first connecting post (41) and the second connecting post (321) are connected by an elastic member (33).

5. Positioning jig for PCBA production according to claim 1, characterized in that the containing groove (10) is provided with an inner cavity groove (100) for installing the adsorption device (2).

6. The positioning jig for PCBA production according to claim 5, characterized in that the suction device (2) is a suction nozzle.

7. A positioning jig for PCBA production according to claim 1, characterized in that the clamping post (31) is sleeved with a rubber sheath (311).

8. The positioning jig for PCBA production according to claim 2, characterized in that the one end of the ejector pin (36) facing the push block (32) is provided with an arc-shaped protrusion (361).

9. A positioning jig for PCBA production according to claim 4, characterized in that the elastic member (33) is an extension spring.

10. The positioning jig for producing PCBA as in claim 1, further comprising a buffer spring (5), wherein one end of the buffer spring (5) is connected with the supporting base (4), and the other end of the buffer spring (5) is abutted with the bearing plate (1).