CN113015350B

CN113015350B - Fixing device

Info

Publication number: CN113015350B
Application number: CN202110188069.1A
Authority: CN
Inventors: 王晓妮; 王雪君; 刘景龙; 谭本波; 眭敏; 杨玉丽
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2021-02-18
Filing date: 2021-02-18
Publication date: 2022-05-27
Anticipated expiration: 2041-02-18
Also published as: CN113015350A

Abstract

The invention provides a fixing device, which is used for positioning a part to be welded and comprises: the supporting plate is used for mounting the circuit board; the supporting component is arranged on the supporting plate, and a supporting column for supporting the component to be welded is arranged on the supporting component; the pressing plate is provided with a pressing block which is used for being abutted to the part to be welded; the pressing plate is rotatably connected with the supporting plate, so that the pressing block is in a pressing state abutting against the part to be welded, and the part to be welded is positioned between the supporting column and the pressing block. The fixing device solves the problem of high labor intensity of soldering operation in the prior art.

Description

Fixing device

Technical Field

The invention relates to the field of soldering operation, in particular to a fixing device.

Background

The power devices (IPM, rectifier bridge, IGBT, power diode and the like) of the control panel of the inverter air conditioner can generate a large amount of heat during the operation of the air conditioner, and in order to ensure the normal operation of the inverter air conditioner, the heat needs to be dissipated through a radiator, and if the heat dissipation is poor, the panel explosion can be caused. During production, a plurality of power devices are required to be tightly attached to the radiator, and a certain height is required to be kept with the PCB at the same time, and the height is high to the accuracy (plus or minus 0.3mm), so that the welding height of the power devices such as the module becomes the key of module welding.

The welding mode of the power device is generally wave welding. The wave soldering assembly process needs manual height setting and welding, and the operation flow is as follows:

(1) the height of a chock fixture positioning module (IGBT, a diode, a triode and a rectifier bridge) is used;

(2) manually pressing the element lightly, and performing manual soldering;

(3) and taking out the chock block tool for positioning.

The height fixing process needs more personnel, the assembly process is complex, and the labor intensity of the workers is high.

Disclosure of Invention

The invention mainly aims to provide a fixing device to solve the problem of high labor intensity of soldering operation in the prior art.

In order to achieve the above object, the present invention provides a fixing device for positioning a part to be welded, the fixing device including: the supporting plate is used for mounting the circuit board; the supporting component is arranged on the supporting plate, and a supporting column for supporting the component to be welded is arranged on the supporting component; the pressing plate is provided with a pressing block which is used for being abutted to the part to be welded; the pressing plate is rotatably connected with the supporting plate, so that the pressing block is in a pressing state in butt joint with the part to be welded, and the part to be welded is positioned between the supporting column and the pressing block.

Furthermore, a first connecting part is arranged on the supporting plate, and a second connecting part matched with the first connecting part is arranged on the pressing plate; when the pressing block is in a pressing state, the first connecting portion is connected with the second connecting portion, so that the pressing block and the supporting column clamp the parts to be welded.

Further, the pallet includes: the supporting part is arranged in the accommodating groove; the supporting part is arranged in the connecting hole in a penetrating way; the supporting component is provided with a first fixing hole, and the supporting plate is provided with a second fixing hole matched with the first fixing hole so as to connect the supporting plate and the supporting component through fixing pieces arranged in the second fixing hole and the first fixing hole in a penetrating manner.

Further, fixing device still includes the backing plate, and the backing plate setting is in the holding tank, and the backing plate is used for setting between layer board and circuit board, and the backing plate has the perforation that is used for supplying the support column to pass.

Further, the supporting component comprises a supporting part and a connecting part which is used for penetrating in the connecting hole; the support column sets up on the supporting part, is provided with spacing face between supporting part and the connecting portion.

Further, the supporting component is provided with a mounting part for mounting the supporting column, and at least part of the supporting column is telescopically arranged along the direction vertical to the surface of the circuit board close to the component to be welded.

Furthermore, the supporting column is a spring thimble, and the mounting part is provided with a mounting groove for mounting the spring thimble; the spring thimble is provided with an end face used for being abutted against a part to be welded; when the end face is not acted by external force, the longest distance between the end face and the upper surface of the supporting plate is H, wherein the value range of H is 0.5mm to 0.7 mm.

Furthermore, the supporting plate is provided with a plurality of pressing parts, the plurality of pressing parts surround a positioning space for positioning the circuit board, and the positions of the pressing parts are adjustably arranged so as to clamp the circuit board between the plurality of pressing parts.

Further, the pressing plate comprises two third connecting portions, the two third connecting portions are rotatably connected with the supporting plate, and an avoiding groove used for avoiding the part to be welded is formed between the two third connecting portions.

Further, the fixing device further comprises: the handle is arranged at one end of the pressing plate, which is far away from the pressing block; and/or, the connecting block is provided with the pivot that is used for inserting and establishes in the third connecting portion on the connecting block, and the third connecting portion rotationally sets up for the connecting block through the pivot.

By applying the technical scheme of the invention, the fixing device is used for positioning the part to be welded and comprises: the supporting plate is used for mounting the circuit board; the supporting component is arranged on the supporting plate, and a supporting column for supporting the component to be welded is arranged on the supporting component; the pressing plate is provided with a pressing block which is used for being abutted to the part to be welded; the pressing plate is rotatably connected with the supporting plate, so that the pressing block is in a pressing state abutting against the part to be welded, and the part to be welded is positioned between the supporting column and the pressing block. By adopting the arrangement, when welding operation is carried out, an operator installs the circuit board on the supporting plate, the supporting part is positioned below the circuit board at the moment, the supporting columns of the supporting part after the parts to be welded are placed at corresponding welding positions penetrate through the mounting holes of the circuit board, and the parts to be welded are jacked to reach the preset height. Then, the rotary pressing plate presses the pressing block on the part to be welded from the other side, so that the purpose of positioning the part to be welded at a preset height is achieved, and finally, the welding leg of the part to be welded is welded on the circuit board. The whole process does not need manual height setting operation, saves manpower and solves the problem of high labor intensity of tin soldering operation in the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of a fixation device according to the present invention;

FIG. 2 shows a schematic structural view of the support member of the inventive fixture;

FIG. 3 shows a schematic view of the construction of the backing plate of the inventive fixture;

FIG. 4 is a schematic view showing the assembled relationship of the support member and the platform of the inventive fixture;

FIG. 5 shows a front view of the embodiment of the fixation device of the present invention of FIG. 1;

FIG. 6 shows a top view of the embodiment of the fixture of the present invention of FIG. 1; and

fig. 7 shows a right side view of the embodiment of the inventive fixture of fig. 1.

Wherein the figures include the following reference numerals:

1. a support plate; 11. a first connection portion; 12. a second fixing hole; 13. accommodating a tank; 14. connecting holes; 15. an extrusion member; 2. a support member; 21. a support pillar; 211. an end face; 22. a first fixing hole; 23. a support portion; 24. a connecting portion; 25. a limiting surface; 26. an installation part; 3. pressing a plate; 31. briquetting; 32. a second connecting portion; 33. a third connecting portion; 34. an avoidance groove; 4. a base plate; 42. perforating; 5. a handle; 6. and (4) connecting the blocks.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The fixing device of the present embodiment, referring to fig. 1 to 7, is used for positioning a part to be welded, and includes: the supporting plate 1 is used for mounting a circuit board; the supporting part 2 is arranged on the supporting plate 1, and a supporting column 21 for supporting a part to be welded is arranged on the supporting part 2; the pressing plate 3 is provided with a pressing block 31 which is used for being abutted with a part to be welded; wherein, the pressing plate 3 is rotatably connected with the supporting plate 1 so that the pressing block 31 has a pressing state abutting against the component to be welded to position the component to be welded between the supporting column 21 and the pressing block 31. By adopting the arrangement, when welding operation is carried out, an operator installs the circuit board on the supporting plate 1, the supporting part 2 is positioned below the circuit board, the supporting column 21 on the supporting part 2 after the part to be welded is placed at the corresponding welding position penetrates through the mounting hole of the circuit board, and the part to be welded is jacked up to reach the preset height. Then, the rotating pressing plate 3 presses the pressing block 31 on the component to be welded from the other side, so that the purpose of positioning the component to be welded at a preset height is achieved, and finally, the welding leg of the component to be welded is welded on the circuit board. The whole process does not need manual height setting operation, so that the labor is saved, and the problem of high labor intensity of soldering operation in the prior art is solved.

In order to achieve the purpose of firmly fixing the parts to be welded, referring to fig. 1 to 7, in the fixing device of the present embodiment, a first connecting portion 11 is provided on the supporting plate 1, and a second connecting portion 32 matching with the first connecting portion 11 is provided on the pressing plate 3; when pressing block 31 is in the pressed state, first connecting portion 11 is connected to second connecting portion 32 so that pressing block 31 and support column 21 clamp the parts to be welded. Therefore, when welding operation is carried out, the problem that the position of the part to be welded is changed due to the fact that the part to be welded is touched can be avoided, and therefore welding quality is guaranteed.

In order to support a circuit board mounted on the pallet 1, in the fixing device of the present embodiment, referring to fig. 1 to 7, the pallet 1 includes: a housing groove 13 in which the support member 2 is disposed; a connecting hole 14, through which the support member 2 is inserted; the supporting member 2 is provided with a first fixing hole 22, the supporting plate 1 is provided with a second fixing hole 12 matched with the first fixing hole 22, and the supporting plate 1 is connected with the supporting member 2 through a fixing piece arranged in the second fixing hole 12 and the first fixing hole 22 in a penetrating manner. Thus, the supporting member 2 is disposed below the circuit board, and the height of the entire fixing device does not need to be increased, simplifying the overall structure of the fixing device.

Specifically, the supporting member 2 and the supporting posts 21 on the supporting member 2 in this embodiment can be configured differently according to the requirements of different circuit boards, and by adopting the above arrangement, the supporting member 2 can be replaced conveniently, so as to meet the requirements of different welding operations.

Referring to fig. 1 to 7, in the fixing device of the present embodiment, the fixing device further includes a pad 4, the pad 4 is disposed in the receiving groove 13, the pad 4 is configured to be disposed between the supporting plate 1 and the circuit board, and the pad 4 has a through hole 42 for the supporting column 21 to pass through.

In order to ensure the welding quality, in the fixing device of the present embodiment, the fixing device further includes a backing plate 4, the backing plate 4 is disposed in the accommodating groove 13, and the backing plate 4 is disposed between the supporting plate 1 and the circuit board. Thus, when welding operation is carried out, the backing plate 4 can play a role in protecting and supporting the circuit board, and the circuit board is prevented from being deformed by heat. The backing plate 4 has perforations 42 for the support columns 21 to pass through. Thus, the support column can pass through the backing plate 4 to support the parts to be welded.

Specifically, the backing plate 4 and the through holes 42 on the backing plate 4 in this embodiment can be configured differently according to different circuit board requirements, and by adopting the above arrangement, the backing plate 4 can be replaced conveniently, so as to meet different welding operation requirements.

In the fixing device of the present embodiment, referring to fig. 1 to 7, the support member 2 includes a support portion 23 and a connecting portion 24 for being inserted into the connecting hole 14; the support column 21 is disposed on the support portion 23, and a limit surface 25 is disposed between the support portion 23 and the connecting portion 24. Thus, when the supporting component 2 is installed on the supporting plate 1, the limiting surface 25 can play a role in positioning, thereby facilitating the operation of operators and saving the operation time.

Referring to fig. 1 to 7, in the fixing device of the present embodiment, a mounting portion 26 for mounting a support column 21 is provided on a support member 2, and at least a portion of the support column 21 is telescopically arranged in a direction perpendicular to a surface of a circuit board near a member to be soldered. During production operation, the positions of the parts to be welded are required to be on the same horizontal plane, the complicated operation environment often causes the positions of the parts to be welded to be out of the requirements, the pressing block 31 is arranged according to the preset position through the arrangement, and when the pressing block 31 presses the parts to be welded, the supporting column 21 can be adjusted in a telescopic mode according to the position of the pressing block 31, so that the parts to be welded can be fixed according to the preset position, and the quality of welding operation is guaranteed.

In the fixing device of the present embodiment, referring to fig. 1 to 7, the supporting column 21 is a pogo pin, and the mounting portion 26 has a mounting groove for mounting the pogo pin; the spring thimble is provided with an end surface 211 used for being abutted with a part to be welded; when the end surface 211 is not affected by external force, the longest distance between the end surface 211 and the upper surface of the supporting plate 1 is H, wherein the value range of H is 0.5mm to 0.7 mm. In the present embodiment, the longest distance between the end surface 211 and the upper surface of the pallet 1 is the longest distance between the end surface 211 and the upper surface of the pallet 1 in a direction perpendicular to the upper surface of the pallet 1.

Further, when the end surface 211 of the pogo pin is pressed to a position flush with the upper end surface of the mounting portion 26, the pushing force of the pogo pin against the member to be welded is F, and in this embodiment, F is in a range of 1N to 2N.

With the arrangement, the spring thimble 8 does not damage the part to be welded while ensuring the height requirement of the part to be welded, and provides a certain supporting and maintaining force for the part to be welded. Thereby ensuring that the circuit board in the automatic welding process can not deform.

Referring to fig. 1 to 7, in the fixing device of the present embodiment, a plurality of pressing members 15 are provided on the supporting plate 1, the plurality of pressing members 15 surround a positioning space for positioning the circuit board, and the pressing members 15 are adjustably positioned to clamp the circuit board between the plurality of pressing members 15.

Specifically, the pressing member 15 is inserted through the connecting shaft on the supporting plate 1, the pressing member 15 is rotatably connected with respect to the connecting shaft, and the pressing member 15 has a cam structure, so that the pressure of the pressing member 15 on the circuit board can be adjusted by rotating the position of the pressing member 15, thereby performing the mounting and dismounting work of the circuit board. The arrangement is simple in structure, and the operation time of an operator is saved.

In the fixing device of the present embodiment, referring to fig. 1 to 7, the pressing plate 3 includes two third connecting portions 33, the two third connecting portions 33 are both rotatably connected to the pallet 1, and an avoiding groove 34 for avoiding the component to be welded is provided between the two third connecting portions 33. Therefore, when the pressing plate 3 rotates, the pressing plate does not interfere with a part to be welded, the rotating angle of the pressing plate 3 is increased, and the performance of a fixed structure is improved.

Referring to fig. 1 to 7, in the fixing device of the present embodiment, the fixing device further includes: and the handle 5 is arranged at one end of the pressing plate 3 far away from the pressing block 31. Thus, the handle 5 can be used to conveniently rotate the pressing plate 3. In addition, an operator can move the fixing device through the handle 5, so that the operation is more convenient.

In order to realize the rotatable connection of the pressure plate 3 relative to the supporting plate 1, in the embodiment, the fixing device is connected with the block 6, the connecting block 6 is provided with a rotating shaft which is inserted into the third connecting part 33, and the third connecting part 33 is rotatably arranged relative to the connecting block 6 through the rotating shaft. The above arrangement simplifies the structure of the fixing device.

The fixing device of the present embodiment is used as follows:

firstly, a handle 5 is held to open a pressure plate 3 upwards, a variable frequency air conditioner control panel assembled with parts to be welded (an IGBT, a diode, a triode and a rectifier bridge) is placed on a supporting plate, the positions of the parts to be welded and spring thimbles are adjusted, the parts to be welded are effectively supported, and the supporting columns 21 are used for supporting and ensuring the heights of the parts to be welded to be consistent.

Then, the pressing plate 3 is closed downward by holding the handle 5, and the pressing blocks 31 are respectively and uniformly pressed on the upper surfaces of the parts to be welded, so that the positions of the parts to be welded are fixed.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the fixing device of the invention is used for positioning the part to be welded, and comprises: the supporting plate 1 is used for mounting a circuit board; the supporting part 2 is arranged on the supporting plate 1, and a supporting column 21 for supporting a part to be welded is arranged on the supporting part 2; the pressing plate 3 is provided with a pressing block 31 which is used for being abutted to a part to be welded; wherein, the pressing plate 3 is rotatably connected with the supporting plate 1 so that the pressing block 31 has a pressing state abutting against the component to be welded to position the component to be welded between the supporting column 21 and the pressing block 31. By adopting the arrangement, when welding operation is carried out, an operator installs the circuit board on the supporting plate 1, the supporting part 2 is positioned below the circuit board, the supporting column 21 on the supporting part 2 after the part to be welded is placed at the corresponding welding position penetrates through the mounting hole of the circuit board, and the part to be welded is jacked up to reach the preset height. Then, the rotating pressing plate 3 presses the pressing block 31 on the component to be welded from the other side, so that the purpose of positioning the component to be welded at a preset height is achieved, and finally, the welding leg of the component to be welded is welded on the circuit board. The whole process does not need manual height setting operation, so that the labor is saved, and the problem of high labor intensity of soldering operation in the prior art is solved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixture for locating a part to be welded, the fixture comprising:

the supporting plate (1), the said supporting plate (1) is used for installing the circuit board;

the supporting part (2), the supporting part (2) is installed on the supporting plate (1), and a supporting column (21) for supporting the part to be welded is arranged on the supporting part (2); the pressing plate (3) is provided with a pressing block (31) which is used for being abutted with the part to be welded;

wherein the pressure plate (3) is rotatably connected with the supporting plate (1) so that the pressing block (31) has a pressing state abutting against the component to be welded to position the component to be welded between the supporting column (21) and the pressing block (31); the pallet (1) comprises: a receiving groove (13) in which the support member (2) is disposed; connecting holes (14) are formed in the frame on the periphery of the supporting plate (1), and two ends of the supporting part (2) penetrate through the connecting holes (14).

2. A fixing device according to claim 1, characterized in that the supporting plate (1) is provided with a first connecting portion (11), and the pressure plate (3) is provided with a second connecting portion (32) which is matched with the first connecting portion (11); when the pressing block (31) is in a pressing state, the first connecting part (11) is connected with the second connecting part (32) so that the pressing block (31) and the supporting column (21) clamp the parts to be welded.

3. The fixing device according to claim 1, wherein the supporting member (2) is provided with a first fixing hole (22), and the supporting plate (1) is provided with a second fixing hole (12) matching with the first fixing hole (22), so that the supporting plate (1) and the supporting member (2) are connected by a fixing member penetrating through the second fixing hole (12) and the first fixing hole (22).

4. A fixture according to claim 3, characterised in that it further comprises a backing plate (4), said backing plate (4) being arranged in said receiving groove (13), said backing plate (4) being intended to be arranged between said carrier plate (1) and said circuit board, said backing plate (4) having perforations (42) for the passage of said supporting columns (21).

5. A fixing device according to claim 3, characterized in that said support member (2) comprises a support portion (23) and a connecting portion (24) for passing inside said connection hole (14); the supporting column (21) is arranged on the supporting portion (23), and a limiting surface (25) is arranged between the supporting portion (23) and the connecting portion (24).

6. A fixing device according to claim 1, characterized in that the support member (2) is provided with a mounting portion (26) for mounting the supporting column (21), at least part of the supporting column (21) being telescopically arranged in a direction perpendicular to the surface of the circuit board near the member to be soldered.

7. A fixing device according to claim 6, wherein the supporting post (21) is a pogo pin, the mounting portion (26) having a mounting groove for mounting the pogo pin; the spring thimble is provided with an end surface (211) used for being abutted with the component to be welded; when the end face (211) is free from external force, the longest distance between the end face (211) and the upper surface of the supporting plate (1) is H, wherein the value range of H is 0.5mm to 0.7 mm.

8. The fixing device according to claim 1, wherein a plurality of pressing members (15) are provided on the support plate (1), the plurality of pressing members (15) enclose a positioning space for positioning the circuit board, and the pressing members (15) are adjustably positioned to clamp the circuit board between the plurality of pressing members (15).

9. A fixture according to claim 1, characterised in that the pressure plate (3) comprises two third connecting portions (33), both third connecting portions (33) being rotatably connected with the carrier plate (1), an avoidance groove (34) being provided between the two third connecting portions (33) for avoiding the parts to be welded.

10. The fixture according to claim 9, further comprising:

the handle (5) is arranged at one end, far away from the pressing block (31), of the pressing plate (3); and/or the presence of a gas in the gas,

the connecting block (6), be provided with on connecting block (6) and be used for inserting and establish the pivot in third connecting portion (33), third connecting portion (33) pass through the pivot for connecting block (6) rotationally sets up.