CN214867861U

CN214867861U - Welding tool

Info

Publication number: CN214867861U
Application number: CN202120289114.8U
Authority: CN
Inventors: 曾松标
Original assignee: SHENZHEN RUIBIDA TECHNOLOGY CO LTD
Current assignee: SHENZHEN RUIBIDA TECHNOLOGY CO LTD
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-11-26
Anticipated expiration: 2031-02-01

Abstract

The application discloses a welding tool, which comprises a bottom plate, a frame body, a pressing plate and an elastic pressing arm, wherein the bottom plate is used for placing a circuit board; the bottom plate is provided with a positioning groove, and the bottom of the positioning groove is provided with at least one abdicating hole. The circuit board is placed in the positioning groove of the bottom plate, then the pressing plate is placed on the circuit board, so that components such as output terminals and overcurrent resistors on the circuit board, which are easy to raise in position, are pressed by the pressing plate, and then the pressing plate is pressed by the elastic pressing arm. In the reflow soldering process, even if soldering tin is melted, the output terminals, the overcurrent resistors and other components on the circuit board are not easy to float, the height can be kept relatively fixed, and after soldering is completed, the heights of the output terminals and the overcurrent resistors meet subsequent requirements.

Description

Welding tool

Technical Field

The application relates to the field of circuit board welding, in particular to a welding tool.

Background

When soldering a component on a circuit board, the component and the circuit board are fixed and electrically connected by means of reflow soldering, for example. During welding, high-temperature reflow soldering airflow passes through the components and the soldering tin, the soldering tin is in a molten state, and the output terminals, the over-current resistors and other components on the circuit board are easy to float, so that the output terminals, the over-current resistors and other components are too high to meet subsequent use requirements.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a welding frock, aims at solving among the prior art, when adopting modes such as reflow soldering to weld components and parts on the circuit board, parts such as output terminal and overcurrent resistance on the circuit board float high problem easily.

To achieve the purpose, the embodiment of the application adopts the following technical scheme:

the welding tool comprises a bottom plate for placing a circuit board, a frame body arranged on the bottom plate, a pressing plate arranged on the bottom plate, and an elastic pressing arm which is rotatably arranged on the frame body and used for pressing and holding the pressing plate; the bottom plate is provided with a positioning groove, and the bottom of the positioning groove is provided with at least one abdicating hole.

In one embodiment, the pressing plate is provided with a plurality of avoiding holes.

In one embodiment, the number of the yielding holes is multiple, and the yielding holes are sequentially arranged along the length direction of the bottom plate.

In one embodiment, the inner wall of the abdicating hole is provided with a positioning flap.

In one embodiment, the bottom plate is further provided with a taking and placing abdicating groove communicated with the positioning groove.

In one embodiment, the frame comprises a first side panel, a second side panel connected to and disposed from the first side panel, a third side panel connected to an end of the second side panel remote from the first side panel, and a fourth side panel connected between the first side panel and the third side panel; the fourth side plate is parallel to the second side plate, and the third side plate is parallel to the first side plate.

In one embodiment, the elastic pressing arm comprises a first arc-shaped plate rotatably mounted on the frame body, a second arc-shaped plate connected with the first arc-shaped plate, and a third arc-shaped plate connected with one end, far away from the first arc-shaped plate, of the second arc-shaped plate.

In one embodiment, the resilient pressure arm further comprises a fourth arcuate plate connected to the third arcuate plate; the fourth arc-shaped plate inclines towards the direction close to the second arc-shaped plate relative to the third arc-shaped plate.

In one embodiment, the welding tool further comprises a flattening piece rotatably mounted on the bottom plate.

In one embodiment, the bottom plate is provided with a screw, and the flattening piece is rotatably arranged on the screw.

In one embodiment, a spring is sleeved on the screw and abuts against the flattening piece.

The beneficial effects of the embodiment of the application are as follows: the circuit board is placed in the positioning groove of the bottom plate, then the pressing plate is placed on the circuit board, so that components such as output terminals and overcurrent resistors on the circuit board, which are easy to raise in position, are pressed by the pressing plate, and then the pressing plate is pressed by the elastic pressing arm. In the reflow soldering process, even if soldering tin is melted, the output terminals, the overcurrent resistors and other components on the circuit board are not easy to float, the height can be kept relatively fixed, and after soldering is completed, the heights of the output terminals and the overcurrent resistors meet subsequent requirements.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described 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 welding tool in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a welding fixture in an embodiment of the present application (when a pressure plate is not pressed against a bottom plate);

FIG. 3 is a partial view of a welding fixture in an embodiment of the present application;

in the figure:

1. a base plate; 101. positioning a groove; 1011. a hole of abdication; 1012. positioning the folded plate; 102. taking and placing the abdicating groove; 2. a frame body; 201. a first side plate; 202. a second side plate; 203. a third side plate; 204. a fourth side plate; 3. pressing a plate; 301. avoiding holes; 4. an elastic pressing arm; 401. a first arc-shaped plate; 402. a second arc-shaped plate; 403. a third arc-shaped plate; 404. a fourth arc-shaped plate; 5. flattening the workpiece; 6. a screw; 7. a spring.

Detailed Description

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

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The following detailed description of implementations of the present application is provided in conjunction with specific embodiments.

As shown in fig. 1-3, an embodiment of the present application provides a welding tool, which includes a bottom plate 1 for placing a circuit board, a frame 2 installed on the bottom plate 1, a pressing plate 3 placed on the bottom plate 1, and an elastic pressing arm 4 rotatably installed on the frame 2 and used for pressing and holding the pressing plate 3; the bottom plate 1 is provided with a positioning groove 101, and the bottom of the positioning groove 101 is provided with at least one abdicating hole 1011.

In the embodiment of the application, when the components are welded on the circuit board: the circuit board is placed in the positioning groove 101 of the bottom plate 1, then the pressing plate 3 is placed on the circuit board, so that components which are easy to raise in position, such as output terminals, overcurrent resistors and the like on the circuit board, are pressed by the pressing plate 3, and then the pressing plate 3 is pressed by the elastic pressing arm 4. In the reflow soldering process, even if soldering tin is melted, the output terminals, the overcurrent resistors and other components on the circuit board are not easy to float, the height can be kept relatively fixed, and after soldering is completed, the heights of the output terminals and the overcurrent resistors meet subsequent requirements (meet the requirements on the overall size of the circuit board).

The circuit board is placed in the positioning groove 101, so that the circuit board can be limited, and the circuit board is not easy to slide and further not easy to change the initial position.

The abdicating hole 1011 at the bottom of the positioning groove 101 can abdicate the sharp prick or the device on the surface of the circuit board, so that the circuit board can be flatly placed on the bottom plate 1. On the other hand, the area of the bottom of the circuit board can be covered by the base plate 1 through the abdicating holes 1011, so that high-temperature airflow of reflow soldering can be in good contact with the bottom of the circuit board, and the speed and quality of reflow soldering are improved.

Referring to fig. 1, as another embodiment of the welding tool provided in the present application, a plurality of avoiding holes 301 are formed in the pressing plate 3, and the avoiding holes 301 may be formed to accommodate components that are not required to be prevented from floating and are easily damaged, so as to avoid damage to the components.

Referring to fig. 1, as another embodiment of the welding tool provided in the present application, the number of the abdicating holes 1011 is multiple, and the abdicating holes 1011 are sequentially arranged along the length direction of the base plate 1. Every hole 1011 department of stepping down all can set up the circuit board of a size adaptation, and then sets up a plurality of circuit boards and weld simultaneously on bottom plate 1, promotes welded efficiency.

Referring to fig. 1, as another specific embodiment of the welding tool provided by the present application, a positioning folded plate 1012 is disposed on an inner wall of the abdicating hole 1011, and when a single circuit board is placed at one abdicating hole 1011, components on one circuit board can be respectively located at different positions of the abdicating hole 1011 and separated by the positioning folded plate 1012, so as to position the circuit board at one abdicating hole 1011.

Referring to fig. 1, as another embodiment of the welding tool provided in the present application, a taking and placing abdicating groove 102 communicated with the positioning groove 101 is further formed on the bottom plate 1, so that a hand can conveniently extend into and contact with a side surface of the circuit board, and the circuit board can be taken and placed smoothly.

Referring to fig. 1, as another embodiment of the welding tool provided in the present application, the frame body 2 includes a first side plate 201, a second side plate 202 connected to the first side plate 201 and disposed mutually, a third side plate 203 connected to one end of the second side plate 202 away from the first side plate 201, and a fourth side plate 204 connected between the first side plate 201 and the third side plate 203; the fourth side plate 204 and the second side plate 202 are parallel to each other, and the third side plate 203 and the first side plate 201 are parallel to each other. The rectangle enclosed by the first side plate 201, the second side plate 202, the third side plate 203 and the fourth side plate 204 can limit the circuit board placed on the bottom plate 1.

Referring to fig. 3, as another embodiment of the welding tool provided in the present application, the elastic pressing arm 4 includes a first arc-shaped plate 401 rotatably mounted on the frame 2, a second arc-shaped plate 402 connected to the first arc-shaped plate 401, and a third arc-shaped plate 403 connected to an end of the second arc-shaped plate 402 far away from the first arc-shaped plate 401. The third arc plate 403 is directly pressed on the surface of the circuit board, so as to press the circuit board tightly. The first arc-shaped plate 401, the second arc-shaped plate 402 and the third arc-shaped plate 403 all have certain deformation capacity, can apply certain pressure to the circuit board, and adapt to the circuit boards with different thicknesses through deformation.

Referring to fig. 3, as another embodiment of the welding tool provided in the present application, the elastic pressing arm 4 further includes a fourth arc-shaped plate 404 connected to the third arc-shaped plate 403; the fourth arc-shaped plate 404 is inclined towards the direction close to the second arc-shaped plate 402 relative to the third arc-shaped plate 403, so that the elastic pressing and holding arm 4 can be conveniently applied by a hand, the elastic pressing and holding arm 4 can be easily pulled up through the fourth arc-shaped plate 404, and the pressing and holding state of the circuit board by the elastic pressing and holding arm 4 is contacted.

Referring to fig. 3, as another embodiment of the welding tool provided in the present application, the welding tool further includes a pressing member 5 rotatably mounted on the bottom plate 1. The edge of the circuit board can be pressed and held by the flattening piece 5 and is in direct contact with the surface of the circuit board, so that the circuit board can be stably placed on the bottom plate 1, and the circuit board is not easy to loosen.

Referring to fig. 3, as another embodiment of the welding fixture provided in the present application, a screw 6 is disposed on the bottom plate 1, the pressing member 5 is rotatably mounted on the screw 6, and the screw 6 can be rapidly disassembled and assembled, so as to mount different pressing members 5.

Referring to fig. 3, as another specific embodiment of the welding fixture provided in the present application, a spring 7 is sleeved on the screw 6, the spring 7 abuts against the pressing member 5, and the spring 7 can apply a force to the pressing member 5, so that the pressing member 5 applies a pressure to the circuit board to press and fix the circuit board, and the circuit board is not easily loosened.

It is to be understood that aspects of the present invention may be practiced otherwise than as specifically described.

It should be understood that the above examples are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. The welding tool is characterized by comprising a bottom plate for placing a circuit board, a frame body arranged on the bottom plate, a pressing plate arranged on the bottom plate, and an elastic pressing arm which is rotatably arranged on the frame body and is used for pressing and holding the pressing plate; the bottom plate is provided with a positioning groove, and the bottom of the positioning groove is provided with at least one abdicating hole.

2. The welding tooling of claim 1, wherein the pressure plate is provided with a plurality of relief holes.

3. The welding frock of claim 1, wherein the number of the hole of stepping down is a plurality of, and a plurality of the hole of stepping down sets gradually along the length direction of bottom plate.

4. The welding tooling of claim 3, wherein the inner wall of the abdicating hole is provided with a positioning flap.

5. The welding tooling of claim 1, wherein the bottom plate is further provided with a pick-and-place abdicating groove communicated with the positioning groove.

6. The welding tool of claim 1, wherein the frame comprises a first side plate, a second side plate connected to the first side plate and disposed with respect to each other, a third side plate connected to an end of the second side plate remote from the first side plate, and a fourth side plate connected between the first side plate and the third side plate; the fourth side plate is parallel to the second side plate, and the third side plate is parallel to the first side plate.

7. The welding tool of claim 1, wherein the elastic pressing arm comprises a first arc-shaped plate rotatably mounted on the frame, a second arc-shaped plate connected with the first arc-shaped plate, and a third arc-shaped plate connected with one end, away from the first arc-shaped plate, of the second arc-shaped plate.

8. The welding tooling of claim 7, wherein the resilient hold down arm further comprises a fourth arcuate plate connected to the third arcuate plate; the fourth arc-shaped plate inclines towards the direction close to the second arc-shaped plate relative to the third arc-shaped plate.

9. The welding tool of claim 1, further comprising a flattening member rotatably mounted to the base plate.

10. The welding tooling of claim 9, wherein the bottom plate is provided with a screw, and the flattening member is rotatably mounted on the screw.