Welding fixture

Abstract

The utility model belongs to the technical field of PCB welding, and discloses a welding fixture. The welding clamp comprises a first clamping rod, a second clamping rod and at least two corner clamps, wherein the second clamping rod is rotationally connected to the first clamping rod; the at least two corner clamps are movably arranged on the first clamping rod or the second clamping rod, when the at least two corner clamps are matched to clamp the PCB, the at least two corner clamps at least abut against two opposite corners of the PCB, and the at least two corner clamps can be locked. According to the welding clamp, the opposite corners of the PCB abut against each other through the at least two corner clamps so as to clamp and fix the PCB, and the relative positions of the corner clamps can be adjusted by adjusting the positions of the corner clamps on the first clamping rod or the second clamping rod and rotating the first clamping rod and the second clamping rod; and therefore, the PCBs with different shapes and sizes can be clamped and fixed, and the application range and the practicability of the welding fixture are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board welding, in particular to a welding fixture. Background Art

[0002] A printed circuit board (PCB), also known as a printed circuit board, is a crucial electronic component that supports and connects electronic components. In electronics manufacturing plants, PCBs undergo multiple production steps, including soldering electronic chips and wires.

[0003] Currently, when manually soldering PCBs, the PCB is usually placed directly on a work surface, and then components are soldered onto the PCB one by one. Because the PCB is not fixed, it is easy to move during the soldering process, resulting in soldering errors and reducing the product yield. Utility Model Content

[0004] The purpose of the utility model is to provide a welding fixture that can stably clamp PCB boards of various shapes, has a simple structure and is highly practical.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a welding fixture, comprising:

[0007] First clamping rod;

[0008] a second clamping rod, rotatably connected to the first clamping rod;

[0009] At least two corner clamps are movably provided on the first clamping rod or the second clamping rod. When the at least two corner clamps cooperate to clamp the PCB board, they at least rest against two opposite corners of the PCB board, and the at least two corner clamps can be locked.

[0010] Preferably, the corner clamp is provided with a passing channel and a locking hole connected to the passing channel, the first clamping rod or the second clamping rod is inserted and fitted with the passing channel, and an abutment bolt is screwed in the locking hole, and the abutment bolt can press the corner clamp against the corresponding first clamping rod or the second clamping rod.

[0011] Preferably, the corner clamp includes two mutually perpendicular limiting walls, which are arranged to form a slot for clamping the corner of the PCB board, and the two limiting walls can be respectively pressed against the adjacent two side edges of the PCB board.

[0012] Preferably, both of the limiting walls are provided with accommodating grooves, and the corners of the PCB board are clamped in the accommodating grooves.

[0013] Preferably, a flexible pad is provided on the limiting wall.

[0014] Preferably, the welding fixture further includes a carrier plate and an adjustment base, the adjustment base is arranged on the carrier plate, the first clamping rod and the second clamping rod are arranged on the carrier plate, and the adjustment base can drive the carrier plate to rotate relative to the horizontal plane to adjust the horizontality of the carrier plate.

[0015] Preferably, the adjustment base includes a fixing cylinder and an adjustment rod, the fixing cylinder or the adjustment rod is connected to the carrier plate, the fixing cylinder is provided with a first thread, and the adjustment rod is provided with a second thread matching the first thread.

[0016] Preferably, the fixing tube is connected to the carrier plate, and an anti-slip pad is provided at the end of the adjusting rod facing away from the fixing tube.

[0017] Preferably, the first clamping rod is provided with a first rotating shaft hole, the second clamping rod is provided with a second rotating shaft hole, the carrier plate is provided with a convex shaft, and the convex shaft is passed through the first rotating shaft hole and the second rotating shaft hole;

[0018] A locking piece is threadedly connected to the convex shaft, and the locking piece can press the first clamping rod or the second clamping rod.

[0019] Preferably, the first clamping rod and / or the second clamping rod are provided with a protrusion, and the carrier plate is provided with an arc groove that slides with the protrusion, and the arc groove is configured to limit the rotation range of the first clamping rod and / or the second clamping rod.

[0020] The beneficial effects of the present invention are:

[0021] The welding clamp provided by the present invention is provided with at least two corner clamps on the first clamp rod or the second clamp rod, and the at least two corner clamps can abut against two diagonal corners on the PCB board. Therefore, the first clamp rod or the second clamp rod can clamp and fix the PCB board through the corner clamps, thereby preventing the PCB board from moving during the welding process and affecting the welding quality; since the first clamp rod and the second clamp rod are rotatably connected, and the corner clamps are movably provided on the first clamp rod or the second clamp rod, the relative positions of the corner clamps can be adjusted by adjusting the positions of the corner clamps on the first clamp rod or the second clamp rod and rotating the first clamp rod and the second clamp rod, thereby clamping and fixing PCB boards of different shapes and sizes, greatly improving the scope of application and practicality of the welding clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of a welding fixture provided by a specific embodiment of the utility model;

[0023] Figure 2 It is a top view of a welding fixture provided in a specific embodiment of the present utility model;

[0024] Figure 3 It is a side view of a welding fixture provided in a specific embodiment of the present utility model.

[0025] In the picture:

[0026] 1- first clamping rod;

[0027] 2- second clamping rod;

[0028] 3-angle clamp; 31-butt bolt;

[0029] 4-carrier plate; 41-arc groove;

[0030] 5-adjusting base; 51-fixing cylinder; 52-adjusting rod;

[0031] 6- Locking piece. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0033] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "right," and "left" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0036] like Figure 1As shown, the utility model provides a welding clamp, which includes a first clamping rod 1, a second clamping rod 2 and at least two corner clamps 3. The second clamping rod 2 is rotatably connected to the first clamping rod 1; the at least two corner clamps 3 are movably arranged on the first clamping rod 1 or the second clamping rod 2. When the at least two corner clamps 3 cooperate to clamp the PCB board, they at least rest against two opposite corners of the PCB board, and the at least two corner clamps 3 can be locked. In this embodiment, at least two corner clamps 3 are provided on the first clamping rod 1 or the second clamping rod 2, and at least two corner clamps 3 can abut against two diagonal corners on the PCB board. Therefore, the first clamping rod 1 or the second clamping rod 2 can clamp and fix the PCB board through the corner clamps 3 to avoid movement of the PCB board during welding and affecting the welding quality; since the first clamping rod 1 and the second clamping rod 2 are rotatably connected, and the corner clamps 3 are movably provided on the first clamping rod 1 or the second clamping rod 2, the relative positions of the corner clamps 3 can be adjusted by adjusting the positions of the corner clamps 3 on the first clamping rod 1 or the second clamping rod 2 and rotating the first clamping rod 1 and the second clamping rod 2, thereby clamping and fixing PCB boards of different shapes and sizes, greatly improving the scope of application and practicality of the welding fixture. Specifically, the first clamping rod 1 and the second clamping rod 2 are two rod-shaped objects of the same shape. The first clamping rod 1 and the second clamping rod 2 are rotated together, and the rotational matching points of the first clamping rod 1 and the second clamping rod 2 are respectively located at the center positions of the first clamping rod 1 and the second clamping rod 2 along the length direction to ensure the stable rotation of the first clamping rod 1 and the second clamping rod 2; there are four corner clamps 3 in total, and two corner clamps 3 are respectively provided on the first clamping rod 1 and the second clamping rod 2. When the four corner clamps 3 cooperate to clamp the PCB board, they correspond one by one to the four corners of the PCB board, thereby firmly clamping and fixing the PCB board.

[0037] Furthermore, the angle clamp 3 is provided with a mounting channel and a locking hole connected to the mounting channel. The first clamping rod 1 or the second clamping rod 2 is inserted and matched with the mounting channel. An abutment bolt 31 is screwed into the locking hole. The abutment bolt 31 can press the angle clamp 3 against the corresponding first clamping rod 1 or the second clamping rod 2. In this embodiment, the mounting channel is horizontally opened on the angle clamp 3, and the locking hole is vertically opened on the angle clamp 3. The locking hole is connected to the mounting channel. The angle clamp 3 is inserted into the first clamping rod 1 and the second clamping rod 2 through the mounting channel. The abutment bolt 31 is screwed into the locking hole. Taking the abutment bolt 31 on the first clamping rod 1 as an example, when the abutment bolt 31 is screwed in the forward direction, the end of the abutment bolt 31 will approach the first clamping rod 1 and eventually abut against the first clamping rod 1, thereby locking the position of the angle clamp 3 on the first clamping rod 1. When the abutment bolt 31 is screwed in the reverse direction, the end of the abutment bolt 31 will be disengaged from the abutment with the first clamping rod 1, thereby allowing the angle clamp 3 to slide freely on the first clamping rod 1.

[0038] Further, if Figure 1 and Figure 2As shown, corner clamp 3 comprises two mutually perpendicular retaining walls that form a slot for securing the corner of a PCB. The retaining walls are able to abut against adjacent sides of the PCB in a one-to-one correspondence. In this embodiment, corner clamp 3 is an L-shaped structure consisting of two retaining walls, each of which abuts against two adjacent sides of the PCB, thereby ensuring the stability of the PCB.

[0039] Specifically, both limiting walls are provided with recessed receiving grooves, into which the corners of the PCB are clamped. In this embodiment, the receiving grooves are used to accommodate the corners of the PCB, and the corners of the PCB are clamped in the receiving grooves, thereby further improving the fixing effect of the corner clamp 3 on the PCB.

[0040] Specifically, a flexible pad is provided on the limiting wall. In this embodiment, a flexible pad made of rubber or sponge is provided on one side of the limiting wall facing the PCB board to prevent the PCB board from being worn when clamping the PCB board.

[0041] Furthermore, if Figure 1 As shown, the welding fixture further includes a carrier plate 4 and an adjustment base 5. The adjustment base 5 is disposed on the carrier plate 4, and the first clamping rod 1 and the second clamping rod 2 are disposed on the carrier plate 4. The adjustment base 5 can drive the carrier plate 4 to rotate relative to the horizontal plane to adjust the levelness of the carrier plate 4. In this embodiment, the carrier plate 4 is a rectangular flat plate structure, and the first clamping rod 1 and the second clamping rod 2 are both rotatably disposed on the carrier plate 4. The adjustment base 5 is disposed on the carrier plate 4 opposite the first clamping rod 1 and the second clamping rod 2. Specifically, the adjustment base 5 is disposed on the carrier plate 4 near a side edge. The adjustment base 5 can lift and lower the carrier plate 4 by its own extension and contraction, so that the carrier plate 4 rotates relative to the horizontal plane, thereby adjusting the levelness of the PCB board on the carrier plate 4. This facilitates workers to perform soldering operations on the PCB board at a suitable angle, reducing worker fatigue.

[0042] Specifically, if Figure 3 As shown, the adjustable base 5 includes a fixed cylinder 51 and an adjusting rod 52. The fixed cylinder 51 or the adjusting rod 52 is connected to the carrier plate 4. The fixed cylinder 51 is provided with a first thread, and the adjusting rod 52 is provided with a second thread that matches the first thread. In this embodiment, the fixed cylinder 51 and the adjusting rod 52 are threadedly engaged. By turning the adjusting rod 52 or the fixed cylinder 51, the distance between them can be adjusted, thereby achieving the extension and retraction of the adjustable base 5 and adjusting the levelness of the carrier plate 4.

[0043] Specifically, if Figure 3As shown, the fixing cylinder 51 is connected to the carrier plate 4, and the end of the adjustment rod 52 facing away from the fixing cylinder 51 is provided with a non-slip pad. In this embodiment, the fixing cylinder 51 is fixedly connected to the carrier plate 4, and the bottom of the adjustment rod 52 is placed on the work surface. By turning the adjustment rod 52, the operator can adjust the angle between the carrier plate 4 and the work surface, thereby adjusting the levelness of the PCB board. Specifically, the bottom of the adjustment rod 52 is provided with a rubber non-slip pad, which can increase the friction between the adjustment rod 52 and the work surface, preventing the welding fixture from moving during the welding process, thereby ensuring welding quality.

[0044] Specifically, a first pivot hole is provided on the first clamping rod 1, a second pivot hole is provided on the second clamping rod 2, and a protrusion is provided on the carrier plate 4. The protrusion is inserted into the first pivot hole and the second pivot hole. A locking member 6 is threadedly connected to the protrusion, and the locking member 6 can press against the first clamping rod 1 or the second clamping rod 2. In this embodiment, the carrier plate 4 is provided with a protrusion perpendicular to the surface of the carrier plate 4. The first clamping rod 1 is inserted into the protrusion through the first pivot hole, and the second clamping rod 2 is also inserted into the protrusion through the second pivot hole. The first clamping rod 1 and the second clamping rod 2 are stacked together, and the upper and lower stacking positions of the first clamping rod 1 and the second clamping rod 2 can be reversed. The locking member 6 is threadedly connected to the protrusion. The locking member 6 is a bolt. The head of the locking member 6 abuts against the first clamping rod 1 or the second clamping rod 2. Tightening the locking member 6 can press the first clamping rod 1 and the second clamping rod 2 against the carrier plate 4, thereby locking the first clamping rod 1 and the second clamping rod 2 in position, thereby fixing the position of the PCB board and facilitating subsequent soldering operations.

[0045] Furthermore, a protrusion is provided on the first clamping rod 1 and / or the second clamping rod 2, and an arc groove 41 is provided on the carrier plate 4 to slide with the protrusion. The arc groove 41 is configured to limit the rotation range of the first clamping rod 1 and / or the second clamping rod 2. In this embodiment, the arc groove 41 relies on its own length to limit the rotation range of the first clamping rod 1 and / or the second clamping rod 2; specifically, either one or both of the first clamping rod 1 and the second clamping rod 2 are provided with a protrusion, the protrusion faces the carrier plate 4, and the carrier plate 4 is provided with an arc groove 41 that matches the protrusion. The protrusion is clamped in the arc groove 41, and when the first clamping rod 1 and / or the second clamping rod 2 rotates, it can drive the protrusion to slide along the arc groove 41. When the protrusion abuts against the end of the arc groove 41, the first clamping rod 1 and / or the second clamping rod 2 stops rotating. Therefore, the arc groove 41 can limit the rotation range of the first clamping rod 1 and / or the second clamping rod 2 through the protrusion, so that when loading the PCB board, there is no need to rotate the first clamping rod 1 and / or the second clamping rod 2 significantly, and the PCB board can be clamped by fine-tuning within a small range, thereby simplifying the operation and improving practicality.

[0046] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Welding fixture, characterized in that, include: a first clamping rod (1); A second clamping rod (2) rotatably connected to the first clamping rod (1); At least two corner clamps (3), at least two of the corner clamps (3) are movably arranged on the first clamping rod (1) or the second clamping rod (2), and when the at least two corner clamps (3) cooperate to clamp the PCB board, they at least abut against two opposite corners of the PCB board, and at least two of the corner clamps (3) can be locked.

2. The welding fixture according to claim 1, characterized in that The corner clamp (3) is provided with a mounting channel and a locking hole connected to the mounting channel. The first clamp rod (1) or the second clamp rod (2) is inserted and matched with the mounting channel. An abutment bolt (31) is screwed into the locking hole. The abutment bolt (31) can press the corner clamp (3) against the corresponding first clamp rod (1) or the second clamp rod (2).

3. The welding fixture according to claim 1, characterized in that The corner clamp (3) comprises two mutually perpendicular limiting walls, the two limiting walls are arranged to form a slot, the slot is used to clamp the corner of the PCB board, and the two limiting walls can be respectively pressed against the adjacent two side edges of the PCB board.

4. The welding fixture according to claim 3, characterized in that Both of the limiting walls are provided with accommodating grooves, and the corners of the PCB board are clamped in the accommodating grooves.

5. The welding fixture according to claim 3, characterized in that: A flexible pad is provided on the limiting wall.

6. The welding fixture according to claim 1, characterized in that The welding fixture further comprises a carrier plate (4) and an adjustment base (5), wherein the adjustment base (5) is arranged on the carrier plate (4), the first clamping rod (1) and the second clamping rod (2) are arranged on the carrier plate (4), and the adjustment base (5) can drive the carrier plate (4) to rotate relative to a horizontal plane to adjust the horizontality of the carrier plate (4).

7. The welding fixture according to claim 6, characterized in that: The adjustment base (5) comprises a fixed cylinder (51) and an adjustment rod (52); the fixed cylinder (51) or the adjustment rod (52) is connected to the carrier plate (4); the fixed cylinder (51) is provided with a first thread; and the adjustment rod (52) is provided with a second thread matching the first thread.

8. The welding fixture according to claim 7, characterized in that: The fixing tube (51) is connected to the carrier plate (4), and an anti-slip pad is provided at the end of the adjusting rod (52) facing away from the fixing tube (51).

9. The welding fixture according to claim 6, characterized in that: The first clamping rod (1) is provided with a first rotating shaft hole, the second clamping rod (2) is provided with a second rotating shaft hole, the carrier plate (4) has a convex shaft, and the convex shaft is inserted into the first rotating shaft hole and the second rotating shaft hole; A locking piece (6) is threadedly connected to the convex shaft, and the locking piece (6) is capable of pressing the first clamping rod (1) or the second clamping rod (2).

10. The welding fixture according to claim 6, characterized in that The first clamping rod (1) and / or the second clamping rod (2) are provided with a protrusion, and the carrier plate (4) is provided with an arc groove (41) that slides with the protrusion, and the arc groove (41) is configured to limit the rotation range of the first clamping rod (1) and / or the second clamping rod (2).

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