A butt welding machine provided with a guide clamping structure

Abstract

The utility model discloses a kind of butt welding machines with guiding clamping structure, including bottom plate, the vertical fixed setting of bottom plate top side has support column, the drive cylinder is fixedly installed in the top end of support column, the driving rod of drive cylinder vertically extends downwards and is fixedly connected with moving column, the end of moving column away from drive cylinder is slidably penetrated support column and is slidably assembled with support column, the end of moving column away from drive cylinder is fixedly set with the mounting bracket of horizontal extension, the mounting bracket is fixedly installed with the butt needle for realizing butt welding operation, the position of bottom plate top corresponding butt needle directly below is fixedly set with shell, the fixed seat for placing the workpiece to be welded is slidably installed on the top surface of shell along length direction, only need to rotate adjusting wheel to complete fixed seat position adjustment, without multi-step operation, substantially improve batch production efficiency, and the self-locking characteristic of worm gear transmission avoids mis-touching displacement, cooperates the guiding effect of slide hole, and welding precision is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of spot welding processing machine technology, specifically a spot welding machine equipped with a guide clamping structure. Background Technology

[0002] A spot welding machine is a device used to weld metals. It was first used in the production of automobile bodies in the early 20th century. Specifically, the metals to be welded are heated to a molten state to form a weld pool, thereby fusing the metals together. During welding, the metals to be welded melt under the action of the current passing through the electrodes and generating heat. After the molten points between the metals cool down, they are joined together.

[0003] A search revealed a patent with publication number CN222221418U, which discloses a spot welding machine with a guide clamping structure. The machine includes a welding frame, with an electric push rod fixedly mounted on one end. A guide sliding mechanism is provided on the outer surface of the welding frame away from the positioning push rod. This mechanism allows the parts to move stably forward, backward, left, and right in the same direction during spot welding. During processing, the position of the intermediate transfer seat needs to be adjusted first. This is done by pulling up and rotating the lifting gear, causing the rack meshing with it to move, thus moving the intermediate transfer seat. By observing the pointer and longitudinal gauge on one side of the intermediate transfer seat, the distance between the intermediate transfer seat and the bottom welding platform can be precisely adjusted. After adjustment, releasing the lifting gear allows the second spring to push it back to its original position, engaging the positioning gear with the positioning base and fixing the position of the intermediate transfer seat. This prevents workers from accidentally pushing the intermediate transfer seat forward during processing.

[0004] In the aforementioned prior art, each time the position of the transfer connector is adjusted, four steps must be completed in sequence: "lifting the gear → rotating the gear → observing the pointer calibration → loosening the gear fixation". The operation is cumbersome, time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] In view of the problems existing in the above and / or existing spot welding machines with guide clamping structures, this utility model is proposed.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A spot welding machine with a guide clamping structure includes a base plate. A support column is vertically fixed on one side of the top of the base plate. A drive cylinder is fixedly installed at the top of the support column. The drive rod of the drive cylinder extends vertically downward and is fixedly connected to a movable column. The end of the movable column away from the drive cylinder slides through the support column and is slidably assembled with the support column. A horizontally extending mounting frame is fixedly installed on the end of the movable column away from the drive cylinder. A spot welding pin for spot welding is fixedly installed on the mounting frame. A housing is fixedly installed on the top of the base plate at a position directly below the spot welding pin. A fixed seat for placing the workpiece to be welded is slidably installed on the top surface of the housing along its length.

[0009] As a preferred embodiment of the spot welding machine with a guide clamping structure described in this utility model, the outer shell is configured as a hollow cavity structure with two parallel sliding holes symmetrically opened along the length direction on the top surface of the outer shell. A slider is vertically fixed at the center of the bottom of the fixed seat. The slider is inserted into the sliding hole and slidably assembled with the sliding hole. The slider is located between the bottom surface of the fixed seat and the cavity of the outer shell. A pressure plate for pressing the workpiece to be welded is inserted and slidably installed on the top surface of the fixed seat along the vertical direction. A threaded rod is rotatably installed along the length direction of the outer shell cavity through a bearing. The threaded rod horizontally passes through the slider and is threadedly connected to the slider. A worm gear is fixedly sleeved on the outer wall of the threaded rod near the middle. A rotating rod is also rotatably installed along the transverse direction of the outer shell cavity through a bearing. One end of the rotating rod horizontally passes through the side wall of the outer shell and extends to the outside of the outer shell. An adjusting wheel is fixedly sleeved on the end of the rotating rod extending to the outside. A worm gear is fixedly sleeved on the outer wall of the rotating rod inside the outer shell, and the worm gear meshes with the worm wheel.

[0010] As a preferred embodiment of the spot welding machine with a guide clamping structure described in this utility model, several horizontally extending extension plates are symmetrically fixed on the outer walls of both sides of the pressure plate.

[0011] As a preferred embodiment of the spot welding machine with a guide clamping structure described in this utility model, a pair of spring rods are symmetrically inserted and slidably assembled on the top of the pressure plate along the vertical direction, and the bottom end of the spring rods is vertically fixedly installed on the top surface of the fixed base.

[0012] As a preferred embodiment of the spot welding machine with a guide clamping structure described in this utility model, an L-shaped support frame is fixedly installed on the outer wall of the mounting frame away from the contact pin, and a second line laser emitter is fixedly installed on the outer wall of the support frame away from the mounting frame, wherein the laser emission direction of the second line laser emitter is perpendicular to the surface of the workpiece to be welded.

[0013] As a preferred embodiment of the spot welding machine with a guide clamping structure described in this utility model, a first line laser generator is fixedly installed on the outer wall of the mounting frame near the spot needle, and the laser emission direction of the first line laser generator is perpendicular to the laser emission direction of the second line laser generator.

[0014] As a preferred embodiment of the spot welding machine with a guide clamping structure described in this utility model, the laser projection areas of the first line laser generator and the second line laser emitter are both corresponding to the area of ​​the workpiece to be welded above the pressure plate, and the two laser beams converge on the surface of the workpiece to be welded with the bottom end of the spot needle as the center to form a cross-shaped beam.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this solution, the position of the fixed seat can be adjusted simply by rotating the adjusting wheel, without the need for multiple steps, which greatly improves the efficiency of mass production. In addition, the self-locking characteristic of the worm gear drive prevents accidental displacement, and the guiding effect of the sliding hole significantly improves the welding accuracy.

[0017] In this solution, workers can quickly determine workpiece position deviations by using a visual baseline formed by a cross laser. The adjustment process does not require repeated start-stop of equipment or close-range observation, further shortening the calibration time. At the same time, it avoids visual errors caused by manual observation of pointers. It is especially suitable for positioning small workpieces or complex welds, such as multi-segment continuous welds, ensuring the consistency of the position of each welding point, reducing the defect rate. Even novice workers can quickly master the calibration method through the cross laser, reducing training time and improving the adaptability of personnel on the production line. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of a spot welding machine with a guide clamping structure according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of the middle section structure;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the mounting frame of a spot welding machine equipped with a guide clamping structure according to the present invention;

[0022] Figure 4This is a schematic diagram of the internal structure of the outer shell of a spot welding machine with a guide clamping structure according to the present invention.

[0023] In the diagram: 1. Base plate; 2. Support column; 3. Drive cylinder; 4. Moving column; 5. Mounting bracket; 6. Housing; 7. Fixed base; 8. Contact pin; 9. Pressure plate; 10. Extension plate; 11. Spring insert rod; 12. Sliding hole; 13. First-line laser generator; 14. Second-line laser emitter; 15. Support frame; 16. Slider; 17. Threaded rod; 18. Rotating rod; 19. Adjusting wheel; 20. Worm gear; 21. Worm wheel. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Please see Figures 1-4 This utility model provides a technical solution: a spot welding machine with a guide clamping structure. The spot welding machine uses a base plate 1 as a basic support platform. A support column 2 is vertically fixed on one side of the top of the base plate 1 to provide stable support for the driving and welding structure above. A drive cylinder 3 is fixedly installed at the top of the support column 2. The drive rod of the drive cylinder 3 extends vertically downward and is fixedly connected to a moving column 4. The end of the moving column 4 away from the drive cylinder 3 slides through the support column 2 and is slidably assembled with the support column 2. The drive cylinder 3 serves as the power source for the welding action. It can drive the moving column 4 to slide vertically along the support column 2 through the extension and retraction of the drive rod, thereby controlling the lifting and lowering of the welding component below. A horizontally extending mounting frame 5 is fixedly installed on the end of the moving column 4 away from the drive cylinder 3. A spot welding pin 8 for spot welding is fixedly installed on the mounting frame 5. The horizontal extension design of the mounting frame 5 ensures that the spot welding pin 8 can be accurately aligned with the workpiece to be welded below. The spot welding pin 8 is the core component of the electrode. When energized, it can generate heat to heat the workpiece to be welded to a molten state, thus completing the welding.

[0029] A housing 6 is fixedly installed on the top of the base plate 1, directly below the contact pin 8. The housing 6 is a hollow cavity structure to house the internal position adjustment components and protect them from external dust and impacts. A fixing seat 7 is slidably mounted on the top surface of the housing 6 along its length. The fixing seat 7 is used to place the workpiece to be welded, and its sliding direction is consistent with the length direction of the housing 6. The relative position of the workpiece and the contact pin 8 can be adjusted according to welding requirements. Two parallel sliding holes 12 are symmetrically opened on the top surface of the housing 6 along its length. A slider 16 is vertically fixed at the center of the bottom of the fixing seat 7. The slider 16 is inserted into the sliding hole 12 and slidably assembled with the sliding hole 12. The sliding hole 12 provides guidance for the slider 16, ensuring that the fixing seat 7 can only move along the direction of the sliding hole 12. (i.e., along the length of the outer shell 6) the slider 16 moves to avoid lateral deviation and ensure the stability of the adjustment direction. At the same time, the slider 16 is located between the bottom surface of the fixed seat 7 and the cavity of the outer shell 6. This "bridging" design allows the slider 16 to connect to the fixed seat 7 and cooperate with the adjustment components inside the outer shell to achieve power transmission. Inside the cavity of the outer shell 6, a threaded rod 17 is rotatably installed along the length direction via a bearing. The threaded rod 17 horizontally passes through the slider 16 and is threadedly connected to the slider 16. The threaded rod 17 and the slider 16 form a "threaded transmission pair". When the threaded rod 17 rotates, it can drive the slider 16 to move along the axis of the threaded rod 17 (i.e., along the length of the outer shell 6) through thread engagement, thereby driving the fixed seat 7 to move synchronously and realize the adjustment of the position of the workpiece to be welded.

[0030] To achieve convenient driving and self-locking of the threaded rod 17, a rotating rod 18 is also installed laterally inside the cavity of the outer shell 6 via a bearing. One end of the rotating rod 18 horizontally penetrates the side wall of the outer shell 6 and extends to the outside of the outer shell 6. An adjusting wheel 19 is fixedly sleeved on the end extending to the outside. The adjusting wheel 19 is a manually operated component. The worker only needs to rotate the adjusting wheel 19 to drive the internal components to move via the rotating rod 18, without the need for complicated lifting and resetting actions. A worm gear 20 is fixedly sleeved on the outer wall of the rotating rod 18 inside the outer shell 6. A worm wheel 21 is fixedly sleeved on the outer wall of the threaded rod 17 near the middle. The worm 20 meshes with the worm wheel 21, forming a "worm gear transmission pair". Its advantages are: first, it reduces speed and increases torque. When the worker rotates the adjusting wheel 19, only a small amount of force is needed to drive the threaded rod 17 to rotate stably, reducing the intensity of operation. Second, it has strong self-locking properties. The worm gear transmission has a unidirectional transmission characteristic. Only the worm 20 drives the worm wheel 21 to rotate. The worm wheel 21 cannot drive the worm 20 in the opposite direction. Therefore, even if the fixed seat 7 is hit by an external force without rotating the adjusting wheel 19, it will not shift, avoiding welding deviations caused by accidental contact and improving operational safety.

[0031] A pressure plate 9 is inserted and slidably installed on the top surface of the fixed base 7 in the vertical direction. The pressure plate 9 is used to press the workpiece to be welded to prevent the workpiece from deforming due to heat or shifting due to vibration during the welding process. Several horizontally extending extension plates 10 are symmetrically fixed on the outer walls on both sides of the pressure plate 9. The extension plates 10 can reduce the contact area with the metal sheet and facilitate welding.

[0032] A pair of spring rods 11 are symmetrically inserted and slidably mounted on the top of the pressure plate 9 along the vertical direction. The bottom end of the spring rod 11 is vertically fixed on the top surface of the fixed base 7. The spring rod 11 consists of a rod and a spring. The spring is sleeved on the outside of the rod, and its two ends abut against the bottom surface of the pressure plate 9 and the top surface of the fixed base 7, respectively. Its working principle is as follows: when the worker pulls the pressure plate 9 upward, the pressure plate 9 compresses the spring, and the spring stores elastic potential energy. After the workpiece to be welded is placed on the fixed base 7, the pressure plate 9 is released, and the spring releases elastic potential energy, pushing the pressure plate 9 downward until the bottom surface of the pressure plate 9 is in contact with the surface of the workpiece, realizing automatic clamping of the workpiece. This "spring automatic reset" clamping method eliminates the need for manual tightening of bolts or operation of clamps, greatly simplifying the workpiece fixing steps. Moreover, the elastic force of the spring can adapt to workpieces of different thicknesses, avoiding damage to the workpiece due to over-clamping.

[0033] Compared to existing technologies, this embodiment only requires rotating the adjusting wheel 19 to adjust the position of the fixed seat, eliminating the need for multiple steps and significantly improving the efficiency of mass production. Furthermore, the self-locking characteristic of the worm gear 20 and worm 21 transmission prevents accidental displacement, and the guiding effect of the sliding hole 12 significantly improves the welding accuracy.

[0034] Example 2

[0035] Please see Figures 1-4This utility model provides a technical solution: an L-shaped support frame 15 is fixedly installed on the outer wall of the mounting frame 5 away from the contact pin 8. A second line laser emitter 14 is fixedly installed on the outer wall of the support frame 15 away from the mounting frame 5. The function of the L-shaped support frame 15 is to fix the second line laser emitter 14 at a suitable height and angle, ensuring that its laser emission direction is perpendicular to the surface of the workpiece to be welded. The second line laser emitter 14 can emit a line laser, which is projected onto the surface of the workpiece to be welded to form a clear reference line. A first line laser generator 13 is fixedly installed on the outer wall of the mounting frame 5 near the contact pin 8. The laser emission direction of the first line laser generator 13 is opposite to the laser emission direction of the second line laser emitter 14. Vertically, the linear laser emitted by the first line laser generator 13 and the laser emitted by the second line laser generator 14 intersect on the surface of the workpiece to be welded, forming a cross-shaped beam. The projection areas of the two laser beams correspond to the area of ​​the workpiece to be welded above the pressure plate 9. The intersection point of the cross-shaped beam is exactly on the same vertical line as the bottom end (welding contact point) of the contact pin 8. In the "position calibration stage" of Embodiment 1, when the worker rotates the adjusting wheel 19 to adjust the position of the fixed seat 7, he can directly observe the relative position of the workpiece to be welded and the intersection point of the cross laser. By simply aligning the workpiece to be welded (such as the weld marking line) with the intersection point of the cross, it can be ensured that the workpiece to be welded is accurately located directly below the contact pin 8, without relying on vague visual judgment or additional pointer calibration tools.

[0036] The visual baseline formed by the cross laser is intuitive and clear, allowing workers to quickly judge the workpiece position deviation. The adjustment process does not require repeated start-stop of the equipment or close observation, further shortening the calibration time. At the same time, it avoids the visual error of manually observing the pointer. It is especially suitable for positioning small workpieces or complex welds (such as multi-segment continuous welds), ensuring the positional consistency of each welding point, reducing the defect rate. Even novice workers can quickly master the calibration method through the cross laser, reducing training time and improving the adaptability of personnel on the production line.

[0037] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A spot welding machine equipped with a guide clamping structure, characterized in that: The base plate (1) is vertically fixed to one side of the top of the base plate (1). A drive cylinder (3) is fixedly installed at the top of the support column (2). The drive rod of the drive cylinder (3) extends vertically downward and is fixedly connected to a moving column (4). The end of the moving column (4) away from the drive cylinder (3) slides through the support column (2) and is slidably assembled with the support column (2). A horizontally extending mounting bracket (5) is fixedly installed on the end of the moving column (4) away from the drive cylinder (3). A contact pin (8) for spot welding is fixedly installed on the mounting bracket (5). A housing (6) is fixedly installed on the top of the base plate (1) at the position directly below the contact pin (8). A fixed seat (7) for placing the workpiece to be welded is slidably installed on the top surface of the housing (6) along the length direction.

2. A spot welding machine with a guide clamping structure according to claim 1, characterized in that: The outer shell (6) is configured as a hollow cavity structure. Two parallel sliding holes (12) are symmetrically opened on the top surface of the outer shell (6) along the length direction. A slider (16) is vertically fixed at the center of the bottom of the fixed seat (7). The slider (16) is inserted into the sliding hole (12) and slidably assembled with the sliding hole (12). The slider (16) is located between the bottom surface of the fixed seat (7) and the cavity of the outer shell (6). A pressure plate (9) for pressing the workpiece to be welded is inserted and slidably installed on the top surface of the fixed seat (7) along the vertical direction. A threaded rod is rotatably installed in the cavity of the outer shell (6) along the length direction through a bearing. (17) The threaded rod (17) passes horizontally through the slider (16) and is threadedly connected to the slider (16). A worm wheel (21) is fixedly sleeved on the outer wall of the threaded rod (17) near the middle. A rotating rod (18) is also installed in the cavity of the outer shell (6) in a transverse direction through a bearing. One end of the rotating rod (18) passes horizontally through the side wall of the outer shell (6) and extends to the outside of the outer shell (6). An adjusting wheel (19) is fixedly sleeved on the end of the rotating rod (18) extending to the outside. A worm (20) is fixedly sleeved on the outer wall of the rotating rod (18) inside the outer shell (6). The worm (20) meshes with the worm wheel (21).

3. A spot welding machine with a guide clamping structure according to claim 2, characterized in that: Several horizontally extending extension plates (10) are symmetrically fixed on the outer walls of both sides of the pressure plate (9).

4. A spot welding machine with a guide clamping structure according to claim 2, characterized in that: A pair of spring rods (11) are symmetrically inserted and slidably mounted on the top of the pressure plate (9) in the vertical direction, and the bottom end of the spring rods (11) is vertically fixed on the top surface of the fixed base (7).

5. A spot welding machine with a guide clamping structure according to claim 1, characterized in that: An L-shaped support frame (15) is fixedly installed on the outer wall of the mounting frame (5) away from the contact pin (8). A second line laser emitter (14) is fixedly installed on the outer wall of the support frame (15) away from the mounting frame (5). The laser emission direction of the second line laser emitter (14) is perpendicular to the surface of the workpiece to be welded.

6. A spot welding machine with a guide clamping structure according to claim 5, characterized in that: A first line laser generator (13) is fixedly installed on the outer wall of the mounting bracket (5) near the contact pin (8). The laser emission direction of the first line laser generator (13) is perpendicular to the laser emission direction of the second line laser generator (14).

7. A spot welding machine with a guide clamping structure according to claim 6, characterized in that: The laser projection areas of the first line laser generator (13) and the second line laser emitter (14) correspond to the area of ​​the workpiece to be welded above the pressure plate (9), and the two laser beams converge on the surface of the workpiece to be welded with the bottom end of the contact pin (8) as the center to form a cross-shaped beam.

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