Precise butt welding clamp

Abstract

The utility model discloses a precise butt welding clamp which comprises a supporting pedestal, a linear track, a welding gun, a pulley, a support seat, a first feeding positioning chuck, a first positioning chuck, a second positioning chuck and a second feeding positioning chuck. The two slender parts are subjected to multi-point positioning, initial positioning and stability of the slender parts in the welding process are remarkably improved, and accurate alignment of welding positions is guaranteed. In the welding process, the multi-point clamping mode effectively counteracts the influence of rotating twisting force, so that the slender part is always kept stable and is not easy to deviate or deform due to the twisting force, and the welding precision and quality are ensured. Through accurate positioning and stable clamping, the slender part cannot deviate and deform during welding, a welding gun can be accurately aligned with a welding point, the welding process is more controllable and accurate, and the overall welding quality is improved.

Description

Technical Field

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

[0002] Butt welding fixtures are key tools in the welding process, especially in the welding of slender parts. Slender parts are usually long and small in diameter, which are prone to deformation and position shift during welding, making it difficult to ensure welding quality. Existing welding fixtures often show shortcomings when facing such special-shaped parts and cannot provide the required precise positioning and stable clamping.

[0003] The quality of butt welding of slender parts directly affects the performance and reliability of the product. For example, in the fields of medical devices, aerospace, automobile manufacturing and precision instruments, the welding quality requirements of slender parts are extremely high, and any tiny welding defects may cause product failure or performance degradation. Traditional welding methods and fixtures can often only clamp a small part of the part, resulting in most areas being free. During the welding process, these free areas are prone to shaking or shifting, which in turn affects the welding accuracy and quality.

[0004] The existing fixture design is particularly inadequate for slender parts that are prone to deformation. Due to unstable clamping, the parts will deform due to thermal expansion and contraction during welding, affecting the final welding effect. Workers need to frequently adjust the position of parts during operation to ensure the accuracy and stability of welding. This not only consumes a lot of time and energy, reduces production efficiency, but also significantly increases production costs.

[0005] For example, in the fields of medical devices, optics, aerospace, automobile manufacturing, and precision instruments, the welding quality of slender parts such as catheters and support rods is directly related to the stability and safety of aircraft. Therefore, it is very important to ensure the welding accuracy and quality of slender parts.

[0006] However, existing welding fixture designs have not been able to fully solve these problems. Most fixtures can only provide local support and fixation, making the parts prone to shaking and shifting during the welding process, resulting in reduced welding accuracy.

[0007] Therefore, how to design a butt welding fixture that can effectively clamp and position slender parts to improve the accuracy and quality of welding has become a technical problem to be solved by the utility model. Summary of the invention

[0008] The technical problem solved by the utility model is to provide a precision butt welding fixture in view of the defects existing in the above-mentioned prior art, so as to solve the welding accuracy and quality problems caused by the lack of stable clamping of slender parts in the butt welding process proposed in the above-mentioned background technology.

[0009] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0010] A precision butt welding fixture comprises a support base, a linear track, a welding gun, a pulley, a bracket base, a first feeding positioning chuck, a first positioning chuck, a second positioning chuck and a second feeding positioning chuck;

[0011] A linear track and a welding gun are fixedly arranged on the support pedestal;

[0012] A pulley matched with the linear track is arranged on the linear track, the pulley and the linear track are slidably matched, the number of the pulleys is at least 2, and the at least 2 pulleys are respectively fixed with a bracket seat;

[0013] The first feeding positioning chuck, the first positioning chuck, the second positioning chuck and the second feeding positioning chuck are respectively fixedly arranged on the support seats of the pulley, the number of which is at least 2;

[0014] The first feeding positioning chuck and the first positioning chuck are arranged on the left side of the welding gun from left to right in sequence; the second positioning chuck and the second feeding positioning chuck are arranged on the right side of the welding gun in sequence from left to right.

[0015] As a further solution of the utility model, the first positioning chuck, the second positioning chuck, the first feeding positioning chuck and the second feeding positioning chuck respectively include clamping ends, the clamping ends of the first positioning chuck and the second positioning chuck are arranged in relative directions, the first feeding positioning chuck is facing the same direction as the clamping ends of the first positioning chuck, and the second feeding positioning chuck is facing the same direction as the clamping ends of the second positioning chuck.

[0016] As a further solution of the utility model, the clamping center lines of the first feeding positioning chuck, the first positioning chuck, the second positioning chuck and the second feeding positioning chuck are on the same straight line.

[0017] As a further solution of the utility model, the welding gun is located above the linear track.

[0018] As a further solution of the utility model, the welding gun is fixedly arranged above the middle part of the linear track through a mounting bracket.

[0019] As a further solution of the utility model, the welding point of the welding gun is oriented toward the extension line of the clamping center line of the chuck.

[0020] As a further solution of the utility model, the pulley is an electric pulley, and the chuck is a rotatable electric chuck.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The first positioning chuck and the first feeding positioning chuck, and the second positioning chuck and the second feeding positioning chuck are used in combination to respectively position the two slender parts at multiple points. In this way, during the welding process, both the initial positioning of the slender parts and the stability during welding are significantly improved, ensuring the precise alignment of the welding position.

[0023] 2. During the welding process, the torsional force generated by the rotational motion often causes the slender parts to deviate. The present invention effectively offsets the influence of the rotational torsional force through a multi-point clamping method, so that the two slender parts remain stable throughout the welding process, and are not easily deviated or deformed due to the torsional force, thereby ensuring the accuracy and quality of welding.

[0024] 3. Through precise positioning and stable clamping, slender parts will not be offset or deformed during welding, thus improving the overall quality of welding. The welding point is located on the extension line of the clamping center line of the chuck, and the welding gun can accurately align with the welding point, making the welding process more controllable and precise.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 for Figure 1 Rear view of the structure.

[0029] The reference numerals and names in the figures are as follows:

[0030] Supporting platform 1, linear rail 2, welding gun 3, pulley 4, bracket seat 5, first feeding positioning chuck 6, first positioning chuck 7, second positioning chuck 8, second feeding positioning chuck 9, slender part 10, welding point 11 and mounting bracket 12. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 —2, in the embodiment of the utility model, a precision butt welding fixture comprises a support base 1, a linear track 2, a welding gun 3, a pulley 4, a bracket base 5, a first feeding positioning chuck 6, a first positioning chuck 7, a second positioning chuck 8 and a second feeding positioning chuck 9; the linear track 2 and the welding gun 3 are fixedly arranged on the support base 1;

[0033] A pulley 4 matching the linear track 2 is arranged on the linear track 2, and the pulley 4 is slidably matched with the linear track 2. The number of pulleys 4 is at least 2. In a preferred embodiment, the number of pulleys 4 is 4, and the 4 pulleys 4 are respectively fixedly provided with a bracket seat 5; the first feeding positioning chuck 6, the first positioning chuck 7, the second positioning chuck 8 and the second feeding positioning chuck 9 are respectively fixedly provided on the bracket seat 5 of the at least 2 pulleys 4; the first feeding positioning chuck 6 and the first positioning chuck 7 are arranged on the left side of the welding gun 3 from left to right in sequence; the second positioning chuck 8 and the second feeding positioning chuck 9 are arranged on the right side of the welding gun 3 from left to right in sequence;

[0034] Among them, four pulleys 4 are respectively moved synchronously and accurately on the linear track 2 by movers known to ordinary technicians in this field, and each chuck is driven to rotate accurately and synchronously by a rotary motor (DDR) to meet the entire processing technology requirements of automatic movement and butt feeding during butt welding, which are all extended implementation methods known to ordinary technicians in this field.

[0035] The chuck can be synchronously and automatically rotated by a hollow direct drive motor (DDR) to control the welding speed of the welding weld point (track) to improve the weld quality, which is also an extended implementation method known to ordinary technicians in this field.

[0036] After welding is completed, the four pulleys 4 can be synchronously moved to the set position (left end of the part) respectively. When a laser cutting device is provided at the left end, the welded part can be cut by this laser cutting device. During the cutting process, it can also be synchronously rotated to facilitate the cutting of the laser cutting device, thereby completing the cutting of the left end of the part. Similarly, after the left end is cut, the four pulleys 4 can be synchronously moved to the set position (right end of the part) respectively. When a laser cutting device is provided at the left end, it can be cut by this laser cutting device. During the cutting process, it can also be synchronously rotated to facilitate the cutting of the laser cutting device, thereby completing the cutting of the right end of the part.

[0037] The first positioning chuck 7, the second positioning chuck 8, the first feeding positioning chuck 6 and the second feeding positioning chuck 9 respectively include clamping ends, and the clamping ends of the first positioning chuck 7 and the second positioning chuck 8 are arranged in opposite directions, the clamping ends of the first feeding positioning chuck 6 and the first positioning chuck 7 face the same direction, and the clamping ends of the second feeding positioning chuck 9 and the second positioning chuck 8 face the same direction. The clamping center lines of the first feeding positioning chuck 6, the first positioning chuck 7, the second positioning chuck 8 and the second feeding positioning chuck 9 are on the same straight line.

[0038] The welding gun 3 is located above the middle of the linear track 2. The welding gun 3 is fixedly arranged above the middle of the linear track 2 by means of a mounting bracket 12. The welding point of the welding gun 3 is oriented toward the extension line of the clamping center line of the chuck. The pulley 4 is an electric pulley 4, and the first feeding positioning chuck 6, the first positioning chuck 7, the second positioning chuck 8, and the second feeding positioning chuck 9 are rotatable electric chucks.

[0039] In the embodiment of the utility model, in order to achieve precision butt welding, the first feeding and positioning chuck 6, the first positioning chuck 7, the second positioning chuck 8, and the second feeding and positioning chuck 9 are rotatable electric chucks. During the welding process, these four electric chucks rotate synchronously to ensure that the two slender parts 10 always remain centered and stable during welding. Through this multi-point synchronous rotation and positioning, the accuracy and quality of welding are significantly improved. Example

[0040] The present embodiment provides a precision butt welding fixture, the main components of which include a support base 1, a linear rail 2, a welding gun 3, an electric pulley 4, a bracket seat 5, and a first feeding positioning chuck 6, a first positioning chuck 7, a second positioning chuck 8 and a second feeding positioning chuck 9, all of which are equipped with electric chucks.

[0041] In actual operation, the elongated part 10 is first clamped by the chuck of the first feeding and positioning chuck 6 at its middle or rear end to ensure that the part maintains a stable straight state in the initial stage. Subsequently, the chuck of the first positioning chuck 7 clamps one end of the part, so that one end of the part is firmly positioned, while the first feeding and positioning chuck 6 continues to clamp to ensure the overall stability and straightness of the part.

[0042] Similarly, on the other side of the weld, the second feeding and positioning chuck 9 clamps the middle or rear end of the other end of the part, and the second positioning chuck 8 clamps this end of the part. This double clamping method not only ensures the stability and straightness of the part, but also makes the welding process more controllable and accurate.

[0043] The welding gun 3 is precisely located between the first positioning chuck 7 and the second positioning chuck 8, and its welding point is directly aligned with the clamping center line of the chucks to ensure the accuracy of welding.

[0044] Through this clamping and positioning method, the clamp of this embodiment improves the quality and efficiency of butt welding of the slender part 10. The stability and straightness of the part during welding are effectively guaranteed, and the accuracy and quality of welding are greatly improved. At the same time, due to the high degree of automation and easy operation of the clamp, the workload and production cost of the operator are greatly reduced, which helps to improve the precision of butt welding. Example

[0045] This embodiment provides a precision butt welding fixture, which is mainly used for butt welding of two slender parts 10 to achieve precise positioning and efficient welding.

[0046] In actual operation, the middle or rear end of the slender part 10 is first clamped by the first feeding and positioning chuck 6 to ensure that it maintains a stable straight state in the initial stage. Subsequently, the first positioning chuck 7 clamps the other end of the slender part 10 to provide additional positioning support. This combined clamping method ensures that the slender part 10 maintains high stability and straightness throughout the welding process.

[0047] Similarly, the second feeding and positioning chuck 9 clamps the middle or rear end of the elongated part 102 to provide preliminary positioning and stability. Then, the second positioning chuck 8 clamps the other end of the elongated part 102 to further ensure its stability and straightness.

[0048] The welding gun 3 is located above the middle of the linear track 2, and is precisely aligned with the butt joint of the two slender parts 10 to ensure the accuracy of welding. The welding point 11 is located on the extension line of the clamping center line of the chuck, and through multi-point positioning, the two slender parts 10 can be precisely aligned during rotation welding.

[0049] During the welding process, a certain torsional force may be generated due to the rotational motion, but through the multi-point positioning clamping method, the slender part 10 can effectively offset this torsional force during the entire welding process. The combination of the first positioning chuck 7 and the first feeding positioning chuck 6, and the combination of the second positioning chuck 8 and the second feeding positioning chuck 9, respectively perform multi-point clamping on the two slender parts 10, so that they always remain stable during welding, and will not be offset or deformed due to torsional force, thereby ensuring welding accuracy and quality.

[0050] Before the slender part 10 is loaded, the spacing of the positioning fit can be adjusted by the electric pulley 4. The electric chuck is loosened during feeding, and the slender part 10 is clamped after the feeding is completed to ensure that the welding point is aligned and the welding point is in the best welding position of the welding gun 3. The above positioning and welding methods, as well as the combined use of the electric chuck and the electric pulley 4, are all extended implementation methods known to ordinary technicians in this field. Through these common technical means, the welding accuracy and efficiency can be further optimized, providing reliable technical guarantees for precision butt welding.

[0051] In the present utility model, unless otherwise clearly stipulated and limited, the terms "installation", "setting", "connection", "fixation", "screw-on" and the like 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 an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0052] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A precision butt welding fixture, characterized in that: It includes a support base, a linear track, a welding gun, a pulley, a bracket base, a first feeding positioning chuck, a first positioning chuck, a second positioning chuck and a second feeding positioning chuck; A linear track and a welding gun are fixedly arranged on the support pedestal; A pulley matched with the linear track is arranged on the linear track, the pulley and the linear track are slidably matched, the number of the pulleys is at least 2, and the at least 2 pulleys are respectively fixed with a bracket seat; The first feeding positioning chuck, the first positioning chuck, the second positioning chuck and the second feeding positioning chuck are respectively fixedly arranged on the support seats of the pulley, the number of which is at least 2; The first feeding positioning chuck and the first positioning chuck are arranged on the left side of the welding gun from left to right in sequence; the second positioning chuck and the second feeding positioning chuck are arranged on the right side of the welding gun in sequence from left to right.

2. A precision butt welding fixture according to claim 1, characterized in that: The first positioning chuck, the second positioning chuck, the first feeding positioning chuck and the second feeding positioning chuck respectively include clamping ends, the clamping ends of the first positioning chuck and the second positioning chuck are arranged in opposite directions, the first feeding positioning chuck is facing the same direction as the clamping ends of the first positioning chuck, and the second feeding positioning chuck is facing the same direction as the clamping ends of the second positioning chuck.

3. A precision butt welding fixture according to claim 1, characterized in that: The clamping center lines of the first feeding positioning chuck, the first positioning chuck, the second positioning chuck and the second feeding positioning chuck are on the same straight line.

4. A precision butt welding fixture according to claim 1, characterized in that: The welding gun is located above the linear track.

5. A precision butt welding fixture according to claim 4, characterized in that: The welding gun is fixedly arranged above the linear track through a mounting bracket.

6. A precision butt welding fixture according to claim 5, characterized in that: The welding point of the welding gun is oriented toward the extension line of the clamping center line of the chuck.

7. The precision butt welding fixture according to claim 1, characterized in that: The pulley is an electric pulley, and the chuck is a rotatable electric chuck.

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