Reinforcing steel bar submerged arc stud welding gun clamping mechanism

Abstract

The utility model discloses a steel bar submerged arc stud welding gun clamping mechanism, and relates to the technical field of welding equipment, the clamping mechanism comprises a rack, a sliding plate assembly, a clamp assembly and a jacking assembly, the sliding plate assembly is installed on the rack; the clamp assembly is mounted on the sliding plate assembly and is suitable for limiting and clamping a reinforcing steel bar in a first direction; the jacking and pressing assembly is installed on the side edge of the rack and suitable for jacking and pressing the outer surface of the reinforcing steel bar in the second direction, and the first direction is perpendicular to the second direction; when the sliding plate assembly works, the clamp assembly and the jacking assembly are suitable for jointly driving the steel bars to ascend and descend according to preset parameters, and welding of the steel bars is completed through a welding gun when the steel bars reach the designated position. By automatically clamping the reinforcing steel bar, the positioning reliability is improved, so that the stability of the welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a steel bar submerged arc stud welding gun clamping mechanism. Background Art

[0002] Traditional submerged arc stud welding guns require manual operation during welding, resulting in low welding efficiency and poor welding quality stability.

[0003] The welding of steel embedded parts is widely used in the nuclear power construction process. Compared with manual arc welding, the submerged arc stud welding process has the advantages of short welding time, less smoke during welding, and insensitivity to environmental wind speed. It is very suitable for the welding of steel embedded parts.

[0004] In the prior art, the welding gun for nuclear power steel bar stud welding is modified from the stud welding gun, and there are the following problems during use:

[0005] Firstly, the welding process requires people to hold the welding rod all the time, which may easily lead to the steel bar and steel plate being welded off-center, resulting in unqualified quality. Secondly, the studs are lifted and lowered by electromagnetic springs. As the use time increases, the spring contraction force decreases, affecting the stability of welding quality. Finally, the welding process requires people to participate all the time, and the welding tools must have certain operating experience.

[0006] For example, a submerged arc stud welding gun is disclosed in a Chinese utility model patent with publication number CN204339107U. Before welding, parameters such as the steel bar clamping force and the lifting height still need to be adjusted, and the use process is still relatively complicated. Utility Model Content

[0007] The utility model aims to provide a steel bar submerged arc stud welding gun clamping mechanism to solve the technical problem in the background technology that the existing submerged arc stud welding gun manually holds the steel bar, which affects the welding quality.

[0008] In order to solve the above problems, the utility model provides a clamping mechanism for a steel bar submerged arc stud welding gun, the clamping mechanism comprising:

[0009] frame;

[0010] A slide plate assembly is mounted on the frame;

[0011] A clamp assembly, mounted on the slide assembly, the clamp assembly being suitable for limiting and clamping the steel bar in a first direction;

[0012] A pressing component is installed on a side of the frame, and the pressing component is suitable for pressing the outer surface of the steel bar along a second direction, and the first direction is perpendicular to the second direction;

[0013] When the slide plate assembly is working, the clamp assembly and the top pressure assembly are suitable for jointly driving the steel bar to rise and fall according to preset parameters, and to complete the welding of the steel bar by a welding gun when the steel bar reaches a designated position.

[0014] Preferably, the slide plate assembly comprises a slide plate component, a coupling and a servo motor mounted on the frame, one end of the coupling is connected to the slide plate component, and the other end is connected to the servo motor.

[0015] Preferably, the clamp assembly comprises a clamp mounting plate mounted on the slide plate component and a steel bar clamp mounted on the surface of the clamp mounting plate, wherein the steel bar clamp is suitable for clamping the steel bar.

[0016] Preferably, the pressing assembly includes a rotary cylinder and a pneumatic switch and an arc-shaped push rod installed on the side of the frame, the arc-shaped push rod is connected to the output shaft of the rotary cylinder, and the rotary cylinder is electrically connected to the pneumatic switch to control the movement of the rotary cylinder and drive the arc-shaped push rod to press on the outer surface of the steel bar.

[0017] Preferably, the steel bar clamp comprises a V-shaped block mounted on the clamp mounting plate and a copper pad mounted on the inner surface of the V-shaped block, a mounting hole is provided on the inner side of the V-shaped block, and the copper pad is connected to the wire through the mounting hole.

[0018] Preferably, an insulating plate is further provided between the fixture mounting plate and the servo motor.

[0019] Preferably, a handle is also provided on the top of the frame.

[0020] Preferably, it also includes an electromagnet arranged at the bottom of the frame, and the electromagnet is suitable for being adsorbed on the embedded steel plate.

[0021] Preferably, the slide plate component includes a threaded screw and a slide plate threadably connected to the threaded screw.

[0022] Preferably, the frame is made of high-strength aluminum alloy material.

[0023] Compared with the prior art, the utility model has at least the following beneficial effects:

[0024] The steel bar submerged arc stud welding gun clamping mechanism of the utility model is composed of a frame, a slide plate assembly, a clamp assembly and a top pressure assembly. The frame is used as the frame structure of the steel bar submerged arc stud welding gun, which is placed at the position to be welded, and the position of the welding gun is adjusted to ensure that the steel bar welding position meets the requirements, so that the steel bar submerged arc stud welding gun can be adsorbed on the steel plate by itself; the slide plate assembly is installed on the frame, and is used to limit the freedom degree of the vertically arranged steel bar in the first direction. After the steel bar is limited in the first direction, the clamp assembly on one side of the frame is started to work, so as to limit the steel bar in the second direction, so that the freedom degree of the steel bar in the three directions of XYZ is limited, that is, the steel bar is vertically fixed at the position to be welded, so as to facilitate the next step of welding the steel bar at the position to be welded. Compared with traditional submerged arc stud welding guns, the steel bar submerged arc stud welding gun in this embodiment of the present invention adopts a slide plate assembly drive method, which can achieve fine control of the lifting and pressing down of the steel bar. The welding operator does not need to manually set it before welding, which can effectively avoid the situation where the welding operator's welding quality is unqualified due to welding operation experience; in addition, the clamping mechanism has a compact structure, which is convenient for the welding operator to carry and transport; the welding process is controlled by a program, and the welding efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of the clamping mechanism of the steel bar submerged arc stud welding gun in the embodiment of the utility model;

[0026] Figure 2 It is a side structural schematic diagram of a steel bar submerged arc stud welding gun clamping mechanism in an embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the steel bar clamp in the embodiment of the utility model;

[0028] Figure 4 It is a schematic diagram of the connection structure between the clamping mechanism of the steel bar submerged arc stud welding gun and the welding gun in the embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1-frame; 11-handle;

[0031] 2-slide plate assembly; 21-slide plate component; 22-coupling; 23-servo motor;

[0032] 3-clamp assembly; 31-clamp mounting plate; 311-insulating plate; 312-bottom line connection hole; 32-rebar clamp; 321-V-block; 322-copper pad;

[0033] 4-top pressure assembly; 41-rotating cylinder; 42-pneumatic switch; 43-arc top rod;

[0034] 5-electromagnet; 6-rebar; 7-embedded steel plate; 8-control system; 9-welding power supply. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0039] See also Figure 1-4 As shown, the embodiment of the utility model provides a steel bar submerged arc stud welding gun clamping mechanism, the clamping mechanism includes a frame 1, a slide plate assembly 2, a clamp assembly 3 and a top pressure assembly 4, wherein:

[0040] The frame 1 serves as an integral supporting frame for carrying and installing the slide plate assembly 2, the clamp assembly 3 and the top pressing assembly 4, thereby facilitating the welding of the embedded steel bar parts.

[0041] The slide plate assembly 2 is mounted on the frame 1 and can move relative to the frame 1 to reach a desired welding position.

[0042] The clamp assembly 3 is installed on the slide assembly 2, and is used to limit the position of the steel bar 6 on the clamp assembly 3. Driven by the slide assembly 2, the slide assembly 2 drives the clamp assembly 3 to move, and the clamp assembly 3 limits the position of the steel bar 6 in a first direction;

[0043] The pressing assembly 4 is installed on the side of the frame 1, and the pressing assembly 4 is suitable for pressing on the outer surface of the steel bar 6 along the second direction, and the first direction is perpendicular to the second direction;

[0044] When the slide plate assembly 2 is working, the clamp assembly 3 and the top pressure assembly 4 are suitable for jointly driving the steel bar 6 to rise and fall according to preset parameters, and to complete the welding of the steel bar 6 through the welding gun when it reaches the designated position.

[0045] In the traditional technology, manual operation is required when welding with a submerged arc stud welding gun, and the welding efficiency is low and the welding quality stability is poor. Specifically in this embodiment, the clamping mechanism of the steel bar submerged arc stud welding gun is composed of a frame 1, a slide assembly 2, a clamp assembly 3 and a top pressure assembly 4. The frame 1 is used as the frame structure of the steel bar submerged arc stud welding gun, which is placed at the position to be welded, and the position of the welding gun is adjusted to ensure that the steel bar welding position meets the requirements, so that the steel bar submerged arc stud welding gun can be adsorbed on the steel plate by itself; the slide assembly 2 is installed on the frame 1, and is used to limit the freedom of the vertically arranged steel bar 6 on the vertical plane (first direction). After the steel bar 6 is limited in the first direction, the clamp assembly 3 on one side of the frame 1 is started to work, so as to limit the steel bar 6 in the horizontal direction (second direction), so that the freedom of the steel bar 6 in the three directions of XYZ is limited, that is, the steel bar 6 is vertically fixed at the position to be welded, so as to facilitate the next step of welding the steel bar 6 at the position to be welded.

[0046] Compared with traditional submerged arc stud welding guns, on the whole, the steel bar submerged arc stud welding gun in this embodiment of the present invention is driven by the slide plate assembly 2, which can achieve fine control of the lifting and pressing down of the steel bar. The welding operator does not need to manually set it before welding, which can effectively avoid the situation where the welding operator's welding quality is unqualified due to welding operation experience; in addition, the clamping mechanism has a compact structure, which is convenient for the welding operator to carry and transport; the welding process is controlled by the program, and the welding efficiency is high.

[0047] As an alternative to the present embodiment, the steel bar submerged arc stud welding gun clamping mechanism in the present embodiment can also be placed on the X-axis and Y-axis platform to realize arbitrary movement of the submerged arc stud welding gun on the X-axis and Y-axis, thereby reducing the situation where the welding operator repeatedly moves the steel bar submerged arc stud welding gun clamping mechanism when welding multiple steel bars 6, thereby further improving welding efficiency and automation.

[0048] Similarly, the steel bar submerged arc stud welding gun clamping mechanism is not only suitable for welding steel bars, but also suitable for welding other cylindrical components and steel plates.

[0049] Furthermore, the slide plate assembly 2 includes a slide plate component 21 , a coupling 22 and a servo motor 23 installed on the frame 1 , one end of the coupling 22 is connected to the slide plate component 21 , and the other end is connected to the servo motor 23 .

[0050] See also Figure 1 As shown, specifically in this embodiment, the skateboard assembly 2 is composed of a skateboard component 21, a coupling 22 and a servo motor 23, wherein the skateboard component 21 is installed on the frame 1 and can move relative to the frame 1, one end of the servo motor 23 is fixed to the top inner side of the frame 1, and the output shaft of the servo motor 23 is vertically downward and connected to the skateboard component 21 through the coupling 22, so that when the servo motor 23 is working, the torque of the servo motor 23 will be transmitted to the skateboard component 21, so that the skateboard component 21 moves relative to the frame 1.

[0051] Furthermore, the clamp assembly 3 includes a clamp mounting plate 31 and a steel bar clamp 32 , wherein the clamp mounting plate 31 is mounted on the slide plate component 21 , and the steel bar clamp 32 is mounted on the surface of the clamp mounting plate 31 , and the steel bar clamp 32 is suitable for clamping the steel bar 6 .

[0052] Specifically, see Figure 1 As shown, in the embodiment of the utility model, the clamp assembly 3 is composed of a clamp mounting plate 31 and a steel bar clamp 32, wherein the slide plate component 21 drives the clamp mounting plate 31 to move together, and the steel bar clamp 32 is installed on the clamp mounting plate 31, thereby realizing the restriction of the freedom of the steel bar 6 in a certain plane.

[0053] In particular, the overall structure of the steel bar clamp 32 is a V-shaped structure, which, together with the arc-shaped push rod 43 on the top-pressing assembly 4, can better contact the surface of the steel bar 6 to adapt to the clamping of different steel bar diameters.

[0054] In addition, a bottom thread connection hole 312 is provided on the right side of the fixture mounting plate 31, and the bottom thread can be connected by bolts during welding.

[0055] Furthermore, the pressing assembly 4 includes a rotating cylinder 41, a pneumatic switch 42 and an arc-shaped push rod 43 installed on the side of the frame 1. The arc-shaped push rod 43 is connected to the output shaft of the rotating cylinder 41, and the rotating cylinder 41 is electrically connected to the pneumatic switch 42 to control the movement of the rotating cylinder 41, thereby driving the arc-shaped push rod 43 to press on the outer surface of the steel bar 6.

[0056] Specifically, see Figure 1 As shown, in the embodiment of the utility model, the pressing assembly 4 is composed of a rotary cylinder 41, a pneumatic switch 42 and an arc-shaped push rod 43, wherein the rotary cylinder 41 and the pneumatic switch 42 are respectively installed on one side of the frame 1, and the arc-shaped push rod 43 is connected to the output shaft of the rotary cylinder 41. In this way, the control of the rotary cylinder 41 is controlled by the pneumatic switch 42 installed on the side of the frame 1, so as to manually control the clamping and loosening of the rotary cylinder 41.

[0057] It is understandable that when the pneumatic switch 42 is turned, the rotary cylinder 41 is put into operation, and the rotation of the rotary cylinder 41 drives the arc-shaped push rod 43 to move, thereby pressing the arc-shaped push rod 43 against the outer surface of the steel bar 6.

[0058] In addition, considering that the outer surface of the steel bar 6 is arc-shaped, the end of the arc-shaped top rod 43 that contacts the steel bar 6 is designed to be in a shape that matches the outer surface of the steel bar 6 .

[0059] Furthermore, the steel bar clamp 32 includes a V-block 321 and a copper pad 322. The V-block 321 is installed on the clamp mounting plate 31, and the copper pad 322 is installed on the inner surface of the V-block 321. A mounting hole is provided on the inner side of the V-block 321, and the copper pad 322 is connected to the wire through the mounting hole.

[0060] Specifically, see Figure 3 As shown, in the embodiment of the utility model, a copper pad 322 is provided on the inner side of the V-shaped block 321 through the mounting hole, so as to ensure that when the steel bar 6 is clamped, it can be in close contact with the surface of the steel bar 6, and the conductive performance is better.

[0061] Furthermore, an insulating plate 311 is provided between the fixture mounting plate 31 and the servo motor 23 .

[0062] Specifically, see Figure 2 As shown, in the embodiment of the present utility model, an insulating plate 311 is provided below the clamp mounting plate 31 to ensure that the current during welding will not be conducted to the servo motor 23 through the steel bar clamp 32 .

[0063] Furthermore, a handle 11 is provided on the top of the frame 1 .

[0064] See also Figure 1 , 2 As shown, specifically in this embodiment, the frame 1 serves as an overall frame, and a rectangular handle 11 is connected to the top to facilitate the carrying of the device.

[0065] Specifically, see Figure 1 , 2 As shown, in the embodiment of the utility model, the steel bar submerged arc stud welding gun clamping mechanism also includes an electromagnet 5 arranged at the bottom of the frame 1, and the electromagnet 5 is suitable for being adsorbed on the embedded steel plate 7.

[0066] Therefore, by installing an electromagnet 5 on the base of the frame 1, its function is to ensure that the entire steel bar submerged arc stud welding gun clamping mechanism can be stably adsorbed on the embedded steel plate 7 during welding, and can be demagnetized after welding is completed to cancel the adsorption with the steel plate.

[0067] In addition, the clamping mechanism of the steel bar submerged arc stud welding gun is fixed on the embedded steel plate 7 by means of adsorption and fixation of the electromagnet 5, which can ensure that the steel bar 6 to be welded is in a vertical state with the embedded steel plate 7, and no deformation occurs during the welding process, while reducing the labor intensity of the welding operator.

[0068] Specifically, see Figure 1 As shown, in the embodiment of the present utility model, the slide plate component 21 includes a threaded screw and a slide plate threadedly connected to the threaded screw.

[0069] Therefore, the slide plate component 21 and the servo motor 23 are fixedly mounted on the frame 1 . The slide plate component 21 is a threaded screw structure and is connected to the servo motor 23 through a coupling 22 .

[0070] Furthermore, in the embodiment of the present utility model, the frame 1 is made of high-strength aluminum alloy material.

[0071] Therefore, the frame 1, as the frame structure of the steel bar submerged arc stud welding gun, adopts high-strength and lightweight materials (such as high-strength aluminum alloy), so that the entire welding gun is easy to operate, carry and transport.

[0072] Specific working process: through the control system 8, set the welding parameters on the welding machine power supply 9 in advance, such as welding current, welding time, lifting speed, lifting distance, descending speed, descending distance, etc., and pay attention to whether the steel bar clamp 32 is in the reset state at this time.

[0073] The welding operator places the submerged arc stud welding gun at the position to be welded on the embedded steel plate 7 through the handle 11, and adjusts the position of the welding gun to ensure that the welding position of the steel bar 6 meets the requirements; turns on the switch of the electromagnet, and at this time the clamping mechanism of the steel bar submerged arc stud welding gun automatically adsorbs on the embedded steel plate 7.

[0074] Take out the prepared steel bar 6, place it on the steel bar clamp 32, turn on the pneumatic switch 42, rotate the cylinder 41 to move, and tighten the steel bar 6 through the arc-shaped push rod 43.

[0075] The welding is started, and the servo motor 23 drives the steel bar 6 to be lifted and lowered according to preset parameters until the welding process of the steel bar 6 is completed.

[0076] The pneumatic switch 42 is turned on again, the rotary cylinder 41 is retracted, and the servo motor 23 is reset to the initial position before welding. The electromagnet 5 is turned off, and the welding operator moves the steel bar submerged arc stud welding gun clamping mechanism to the next welding position through the handle 11, and repeats this to weld the steel bars at the remaining positions on the steel plate.

[0077] For steel bars 6 of different diameters, different steel bar lifting parameters can be set according to the welding process regulations.

[0078] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A steel bar submerged arc stud welding gun clamping mechanism, characterized in that: include: Rack (1); A slide plate assembly (2) mounted on the frame (1); A clamp assembly (3) is mounted on the slide assembly (2), and the clamp assembly (3) is suitable for limiting the position of the steel bar (6) in a first direction; A pressing component (4) is mounted on a side of the frame (1), the pressing component (4) being suitable for pressing the outer surface of the steel bar (6) along a second direction, wherein the first direction is perpendicular to the second direction; When the slide plate assembly (2) is working, the clamp assembly (3) and the top pressure assembly (4) are suitable for jointly driving the steel bar (6) to rise and fall according to preset parameters, and to complete the welding of the steel bar (6) by using a welding gun when the steel bar (6) reaches a designated position.

2. The steel bar submerged arc stud welding gun clamping mechanism according to claim 1, characterized in that: The slide plate assembly (2) comprises a slide plate component (21), a coupling (22) and a servo motor (23) mounted on the frame (1); one end of the coupling (22) is connected to the slide plate component (21), and the other end is connected to the servo motor (23).

3. The steel bar submerged arc stud welding gun clamping mechanism according to claim 2, characterized in that: The clamp assembly (3) comprises a clamp mounting plate (31) mounted on the slide plate component (21) and a steel bar clamp (32) mounted on the surface of the clamp mounting plate (31), wherein the steel bar clamp (32) is suitable for clamping the steel bar (6).

4. The steel bar submerged arc stud welding gun clamping mechanism according to any one of claims 1 to 3, characterized in that: The pressing assembly (4) comprises a rotating cylinder (41), a pneumatic switch (42) and an arc-shaped push rod (43) installed on the side of the frame (1); the arc-shaped push rod (43) is connected to the output shaft of the rotating cylinder (41), and the rotating cylinder (41) is electrically connected to the pneumatic switch (42) to control the movement of the rotating cylinder (41) and drive the arc-shaped push rod (43) to press on the outer surface of the steel bar (6).

5. The steel bar submerged arc stud welding gun clamping mechanism according to claim 3, characterized in that: The steel bar clamp (32) comprises a V-shaped block (321) mounted on the clamp mounting plate (31) and a copper pad (322) mounted on the inner surface of the V-shaped block (321); a mounting hole is provided on the inner side of the V-shaped block (321); and the copper pad (322) is connected to a wire through the mounting hole.

6. The steel bar submerged arc stud welding gun clamping mechanism according to claim 3, characterized in that: An insulating plate (311) is also provided between the fixture mounting plate (31) and the servo motor (23).

7. The steel bar submerged arc stud welding gun clamping mechanism according to any one of claims 5 to 6, characterized in that: A handle (11) is also provided on the top of the frame (1).

8. The steel bar submerged arc stud welding gun clamping mechanism according to claim 7, characterized in that: It also includes an electromagnet (5) arranged at the bottom of the frame (1), and the electromagnet (5) is suitable for being adsorbed on the embedded steel plate (7).

9. The steel bar submerged arc stud welding gun clamping mechanism according to claim 2, characterized in that: The slide plate component (21) comprises a threaded screw and a slide plate threadedly connected to the threaded screw.

10. The steel bar submerged arc stud welding gun clamping mechanism according to claim 4, characterized in that: The frame (1) is made of high-strength aluminum alloy material.

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