An electric welder for stabilizing clamping of a welding workpiece

Abstract

The utility model relates to a kind of electric welding machine of stable clamping welding workpiece, by "threaded tube-screw rod-push rod-sliding block" angle adjusting mechanism, the stepless adjustment of side plate and middle plate is realized.When the included angle exists when two welding workpieces, operator can rotate threaded tube in advance or real-time, drive side plate to rotate around hinged point and accurately fit second workpiece surface, combined with the clamping of middle plate to first workpiece, the synchronous, stable, adaptive clamping of different space angle workpiece is completed.By "step on pressure vertical rod-upper wedge block moves down-slope drives lower wedge block transverse movement" transmission scheme.Operators only need to step on pressure once, can be converted to horizontal long stroke by slope Vertical short stroke is quickly driven, directly drive middle plate to approach workpiece.The transmission mode eliminates the repeated rotation operation of traditional screw rod, action response is quick, substantially shorten clamping preparation time, significantly improve operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electric welding machine technology, specifically to an electric welding machine that stably clamps and welds workpieces. Background Technology

[0002] In welding operations of metal components or other structural parts, it is usually necessary to accurately position and stably clamp the two workpieces to be welded to ensure the accuracy of the welding position and the stability of the welding process. When the two workpieces are not on a straight line due to their shape or previous machining errors, i.e., when there is a certain angle between them, traditional fixed-angle clamps cannot simultaneously and well fit with the surfaces of both workpieces. Forced clamping may lead to local stress concentration on the workpieces, unstable clamping, or even new deformation under the action of welding thermal stress, seriously affecting the welding quality.

[0003] Existing quick-release fixtures typically operate independently, requiring operators to manipulate two fixtures separately. This prevents the synchronous driving of single actions and continues to limit further improvements in overall efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a welding machine that can stably clamp welding workpieces, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding machine for stably clamping welding workpieces, comprising a welding machine body, and further comprising: Clamping assembly: includes a sliding sleeve hinged to the body of the welding machine, an inner support plate fixedly connected to one end of the sliding sleeve for clamping the inner surface of the workpiece, and a longitudinal rod slidably connected to the sliding sleeve and having an upper wedge block fixedly mounted thereon. The sliding sleeve has a sliding connection to a transverse rod. A lower wedge block that contacts the upper wedge block is fixedly mounted on the transverse rod. One end of the transverse rod is fixedly connected to a middle plate. A side plate is hinged to each side of the middle plate. Two screws with opposite thread directions are provided on one side surface of the middle plate. The two screws are threaded to both ends of a threaded tube that is rotatably mounted on one side surface of the middle plate. The ends of the two screws away from the threaded tube are hinged to one end of a push rod. The other end of the push rod is hinged to a slider that is slidably mounted on the side plate. A slide rail for the slider to slide is provided on the side plate.

[0006] Preferably, one end of the sliding sleeve is fixedly connected to one end of the first connecting rod, and the other end of the first connecting rod is fixedly connected to one side surface of the inner support plate, and the other side surface of the inner support plate can contact the inner surface of the workpiece.

[0007] Preferably, a mounting plate is fixedly connected to the surface of the longitudinal rod, one end of the first spring is fixedly connected to the mounting plate, the other end of the first spring is fixedly connected to the inner wall of the sliding sleeve, and the upper end of the longitudinal rod extends out of the sliding sleeve and is fixedly connected to a pedal.

[0008] Preferably, the lower surface of the upper wedge is an inclined surface, and the lower wedge has an inclined surface corresponding to the inclined surface of the upper wedge.

[0009] Preferably, a longitudinal plate is fixedly connected to one side surface of the middle plate, and a threaded tube is rotatably installed on the longitudinal plate.

[0010] Preferably, a base block is fixedly installed at one end of the transverse rod, one end of the second spring is fixedly connected to one side surface of the base block, and the other end of the second spring is fixedly connected to the inner wall of the sliding sleeve.

[0011] Preferably, one end of the screw is fixedly connected to the lifting lug, and one end of the push rod is hinged to the lifting lug.

[0012] Compared with existing technologies, the advantages of this invention are as follows: This invention utilizes a unique "threaded tube-screw-push rod-slider" angle adjustment mechanism, allowing for stepless adjustment of the angle between the side plate and the middle plate. When two welding workpieces are at an angle, the operator can pre-rotate the threaded tube or rotate it in real-time, driving the side plate to rotate around the hinge point via the push rod mechanism, ensuring precise contact with the surface of the second workpiece. Combined with the middle plate's clamping of the first workpiece, this achieves the clamping of two workpieces at different spatial angles.

[0013] The core of this invention lies in its transmission scheme of "pressing the longitudinal rod - the upper wedge block moving downwards - the inclined plane driving the lower wedge block to move laterally." The operator only needs to press down once to quickly convert the short vertical stroke into a long horizontal stroke via the inclined plane, directly driving the center plate closer to the workpiece. This transmission method eliminates the need for repeated rotation operations required by traditional lead screws, resulting in rapid response, significantly reduced clamping preparation time, and greatly improved work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an electric welding machine for stably clamping welding workpieces according to the present invention; Figure 2 This is a schematic diagram of the sliding sleeve and transverse rod structure of a welding machine for stably clamping welding workpieces according to the present invention. Figure 3 This is a schematic diagram of the clamping assembly structure of a welding machine for stably clamping welding workpieces according to the present invention; Figure 4 for Figure 3 Enlarged view of point A; In the diagram: 1. Welding machine body; 2. Sliding sleeve; 201. First connecting rod; 202. Inner support plate; 301. Horizontal rod; 302. Lower wedge block; 304. Bottom block; 305. Second spring; 306. Middle plate; 307. Longitudinal plate; 308. Screw; 309. Threaded pipe; 310. Lifting lug; 311. Push rod; 312. Slider; 313. Slide rail; 314. Side plate; 401. Longitudinal rod; 402. Mounting plate; 403. First spring; 404. Pedal; 405. Upper wedge block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: like Figure 1 As shown, in order to achieve the clamping of the welding workpiece, a welding machine for stably clamping the welding workpiece is proposed, including a welding machine body 1. The welding machine body 1 adopts existing welding machine technology components, and a clamping component for clamping the workpiece is provided on one side of the welding machine body 1.

[0017] The clamping assembly includes a sliding sleeve 2 hinged to the welding machine body 1. The sliding sleeve 2 can rotate around the welding machine body 1. The position of the sliding sleeve 2 can be adjusted by manually rotating it. One end of the sliding sleeve 2 is fixedly connected to one end of the first connecting rod 201, and the other end of the first connecting rod 201 is fixedly connected to one side surface of the inner support plate 202. The other side surface of the inner support plate 202 can contact the inner surface of the workpiece.

[0018] The upper surface of the sliding sleeve 2 is longitudinally slidably connected to the longitudinal rod 401. The sliding direction of the longitudinal rod 401 is perpendicular to the sliding direction of the transverse rod 301. The lower surface of the longitudinal rod 401 is provided with an upper wedge block 405, the lower surface of which is set as an inclined surface. The lower surface of the upper wedge block 405 is in contact with the upper surface of the lower wedge block 302 mentioned below. Two mounting plates 402 are symmetrically fixedly connected to the surface of the longitudinal rod 401. A first spring for resetting the longitudinal rod 301 is fixedly connected to one side surface of the mounting plate 402. One end of the first spring 403 is fixedly connected to the inner wall of the sliding sleeve 2. The upper end of the longitudinal rod 401 extends out of the sliding sleeve 2 and is fixedly connected to a pedal 404. The pedal 404 is used for manually pressing the longitudinal rod 401. The upper surface of the pedal 404 is provided with anti-slip texture. When the longitudinal rod 401 is pressed manually, the longitudinal rod 401 is subjected to downward pressure and moves downward. The first spring 403 is stretched under force, and the upper wedge block 405 moves downward synchronously. This realizes the operation of manually pressing to make the upper wedge block 405 move downward.

[0019] A transverse rod 301 is slidably disposed inside the sliding sleeve 2 along its extension direction. The direction of the transverse rod 301 is perpendicular to the longitudinal rod 401. The transverse rod 301 can slide inside the sliding sleeve 2. A lower wedge block 302 is fixedly disposed on the surface of the transverse rod 301. The upper surface of the lower wedge block 302 is an inclined surface. The inclined surface of the lower wedge block 302 contacts the lower surface of the upper wedge block 405 mentioned above. When the upper wedge block 405 moves downward, its inclined surface will apply a downward squeezing force to the lower wedge block 302, thereby pushing the lower wedge block 302 to move away from the inner support plate 202. The lower wedge block 302 is fixedly connected to the transverse rod 301, so the transverse rod 301 will also move synchronously and in the same direction.

[0020] A base block 304 is fixedly installed at one end of the transverse rod 301. One end of the second spring 305 is fixedly connected to one side surface of the base block 304. The other end of the second spring 305 is fixedly connected to the inner wall of the sliding sleeve 2. When the transverse rod 301 moves away from the inner support plate 202, the second spring 305 will be compressed synchronously.

[0021] The other end of the transverse rod 301 is fixedly connected to the middle plate 306. One side surface of the middle plate 306 can contact the outer surface of the workpiece. The middle plate 306 and the inner support plate 202 cooperate to achieve stable clamping of the welded workpiece. A side plate 314 is hinged to each side of the middle plate 306. Two longitudinal plates 307 are fixedly connected to one side surface of the middle plate 306. A threaded tube 309 is rotatably installed on the longitudinal plate 307. Two screws 308 with opposite thread directions are threaded to both ends of the threaded tube 309. A lifting lug 310 is fixedly installed at the end of the two screws 308 outside the threaded tube 309. One end of the push rod 311 is hinged to the lifting lug 310. The other end of the push rod 311 is hinged to the slider 312 that is slidably installed on the side plate 314. A slide rail 313 for the slider 312 to slide is provided on the side plate 314.

[0022] When the two workpieces being welded are no longer on the same straight line, when the threaded tube 309 is manually turned clockwise or counterclockwise, the rotation of the threaded tube 309 will cause the two screws 308 to move closer to or further away from the threaded tube 309. When the screws 308 move, they will pull or push the lifting lug 310 to move synchronously. When the lifting lug 310 moves, it will apply a pulling or pushing force to one end of the push rod 311 that is hinged to it. Since the length of the push rod 311 remains unchanged, when the push rod 311 applies a pulling or pushing force, it will apply a pulling or pushing force to the slider 312 that is hinged to it and pull it to slide on the slide rail 313. When the slider 312 moves on the slide rail 313, it will apply a pushing or pulling force to the side plate 314 where it is located, thereby causing the side plate 314 to rotate around the hinge point between it and the middle plate 306, thereby realizing the angle adjustment between the side plate 314 and the middle plate 306.

[0023] Working principle: To clamp the two welding workpieces, when the longitudinal rod 401 is manually pressed, it moves downward under downward pressure. The first spring 403 is stretched under force, and the upper wedge block 405 moves downward synchronously. When the upper wedge block 405 moves downward, its inclined surface applies downward squeezing force to the lower wedge block 302, thereby pushing the lower wedge block 302 to move away from the inner support plate 202. The lower wedge block 302 is fixedly connected to the transverse rod 301, so the transverse rod 301 also moves synchronously in the same direction. The transverse rod 301 drives the middle plate 306, which is fixedly connected to it, to move in the same direction until one side surface of the middle plate 306 contacts the outer surface of the workpiece. The middle plate 306 and the side plate 314 on the middle plate 306 cooperate with the inner support plate 202 to achieve stable clamping of the welding workpiece.

[0024] When the manual stops pressing the longitudinal bar 401, the first spring 403 will reset and push the upper wedge block 405 upward until it returns to the initial state. When the upper wedge block 405 moves upward, it no longer contacts the lower wedge block 302, the force on the lower wedge block 302 is removed, the second spring 305 resets synchronously, and pushes the transverse bar 301 to move in the opposite direction and return to the initial position.

[0025] When the two workpieces being welded are no longer on the same straight line, the threaded tube 309 can be manually turned clockwise or counterclockwise as needed. When the threaded tube 309 rotates, the two screws 308 will move closer to or further away from the threaded tube 309. When the screws 308 move, they will pull or push the lifting lug 310 to move synchronously. When the lifting lug 310 moves, it will apply a pulling or pushing force to one end of the push rod 311 that is hinged to it. Since the length of the push rod 311 remains unchanged, when the push rod 311 applies a pulling or pushing force, it will apply a pulling or pushing force to the slider 312 that is hinged to it and pull it to slide on the slide rail 313. When the slider 312 moves on the slide rail 313, it will apply a pushing or pulling force to the side plate 314 where it is located, thereby causing the side plate 314 to rotate around the hinge point between it and the middle plate 306, thereby realizing the angle adjustment between the side plate 314 and the middle plate 306.

[0026] After completing the side plate 314 and the middle plate 306, the operator manually presses the longitudinal rod 401 to move the middle plate 306 closer to the inner support plate 202, clamping one of the workpieces. The operator then holds the other workpiece so that it contacts the side plate 314. At this time, the two sides of the workpiece held in the hand are restricted by the side plate 314 and the operator, respectively, and the direction is not easy to change. At this time, the stability of both welding workpieces is clamped, and the welding stability is improved.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding machine for stably clamping welding workpieces, comprising a welding machine body (1), characterized in that: Also includes: Clamping assembly: includes a sliding sleeve (2) hinged to the body (1) of the welding machine, an inner support plate (202) fixedly connected to one end of the sliding sleeve (2) for clamping the inner surface of the workpiece, and a longitudinal rod (401) slidably connected to the sliding sleeve (2) and fixedly mounted with an upper wedge block (405). The sliding sleeve (2) is internally connected to a transverse rod (301). A lower wedge block (302) is fixedly installed on the transverse rod (301) and contacts the upper wedge block (405). One end of the transverse rod (301) is fixedly connected to a middle plate (306). A side plate (314) is hinged to each side of the middle plate (306). Two screws (308) with opposite thread directions are provided on one side surface of the middle plate (306). The two screws (308) are threaded to both ends of a threaded tube (309) that is rotatably installed on one side surface of the middle plate (306). One end of the two screws (308) away from the threaded tube (309) is hinged to one end of a push rod (311). The other end of the push rod (311) is hinged to a slider (312) that is slidably installed on the side plate (314). A slide rail (313) for the slider (312) to slide is provided on the side plate (314).

2. The welding machine for stably clamping and welding workpieces according to claim 1, characterized in that: One end of the sliding sleeve (2) is fixedly connected to one end of the first connecting rod (201), and the other end of the first connecting rod (201) is fixedly connected to one side surface of the inner support plate (202). The other side surface of the inner support plate (202) can contact the inner surface of the workpiece.

3. The welding machine for stably clamping and welding workpieces according to claim 1, characterized in that: The surface of the longitudinal rod (401) is fixedly connected to the mounting plate (402), one end of the first spring (403) is fixedly connected to the mounting plate (402), the other end of the first spring (403) is fixedly connected to the inner wall of the sliding sleeve (2), and the upper end of the longitudinal rod (401) extends out of the sliding sleeve (2) and is fixedly connected to the pedal (404).

4. The welding machine for stably clamping and welding workpieces according to claim 1, characterized in that: The lower surface of the upper wedge block (405) is an inclined surface, and the lower wedge block (302) is provided with an inclined surface corresponding to the inclined surface of the upper wedge block (405).

5. The welding machine for stably clamping and welding workpieces according to claim 1, characterized in that: A longitudinal plate (307) is fixedly connected to one side surface of the middle plate (306), and a threaded tube (309) is rotatably installed on the longitudinal plate (307).

6. The welding machine for stably clamping and welding workpieces according to claim 1, characterized in that: A base block (304) is fixedly installed at one end of the horizontal rod (301), and one end of the second spring (305) is fixedly connected to one side surface of the base block (304). The other end of the second spring (305) is fixedly connected to the inner wall of the sliding sleeve (2).

7. The welding machine for stably clamping and welding workpieces according to claim 1, characterized in that: One end of the screw (308) is fixedly connected to the lug (310), and one end of the push rod (311) is hinged to the lug (310).

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