Welding jig

Abstract

The embodiment of the utility model provides a welding jig, and relates to the technical field of welding, the welding jig comprises a base and two cover plates, the two cover plates are movably connected with the base, so that each cover plate has a first working position and a second working position which are mutually switched; when in the first working position, the cover plate is matched with the base to be used for clamping workpieces to be welded so as to limit the two workpieces to be welded to be away from each other; when in the second working position, the cover plate loosens the to-be-welded workpiece; a gap is formed between the two cover plates so that a welding space used for avoiding welding equipment can be defined. By means of the design of the jig, the positioning firmness and accuracy of the workpiece to be welded can be improved, the shifting risk does not exist easily in the welding process, and the welding quality can be improved; and meanwhile, positioning operation is convenient and fast, influence of artificial factors is small, needed time is short, welding efficiency can be improved, and welding cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field, specifically, relate to a kind of welding fixture. BACKGROUND

[0002] Welding process is the common machining process in the field of mechanical processing, generally utilizes welding equipment to fixedly connect at least two metal pieces, and the object of welding is various, for example, in the medical field, endoscope insertion tube can be welded and fixed by using welding process. Specifically, endoscope insertion tube usually includes distal tube segment and proximal tube segment, and the distal tube segment is generally a controllable bending segment of metal tube cut by laser engraving, and the bending direction thereof can be controlled by operating endoscope handle; the proximal tube segment is usually a passive bending segment or a metal tube over-segment or a rigid metal tube segment. The pipe diameters of adjacent tube segments are basically consistent, and in order to improve the firmness, the welding process is generally used to weld and fix the tube segments made of adjacent metal materials by using welding equipment.

[0003] The inventor found at least the following disadvantages of the welding process of the endoscope insertion tube in the prior art in the research:

[0004] The two tube segments are placed on the platform, and the two tube segments are manually aligned, and then welded by using welding equipment. Manual positioning of the tube segments has large error, and displacement may occur during the welding process, the positioning accuracy is poor, and the welding quality is low; and the positioning operation has large difference in time according to the proficiency of workers, the welding efficiency is generally low, and the welding cost is increased. UTILITY MODEL CONTENT

[0005] The purpose of the utility model includes, for example, to provide a welding fixture, which can improve the positioning firmness and accuracy of the workpiece to be welded, and the displacement risk is not easy to occur during the welding process, and the welding quality can be improved; at the same time, the positioning operation is convenient, the influence of artificial factors is small, the required time is short, the welding efficiency can be improved, and the welding cost is reduced.

[0006] The embodiment of the utility model can be realized as follows:

[0007] In a first aspect, the utility model provides a welding fixture suitable for welding and fixing endoscope insertion tube, which comprises:

[0008] The base and the two cover plates are movably connected with the base, so that each cover plate has a first working position and a second working position which can be switched with each other; when in the first working position, the cover plate cooperates with the base to clamp the workpiece to be welded, so as to limit the two workpieces to be welded from moving away from each other; when in the second working position, the cover plate releases the workpiece to be welded; the two cover plates have a spacing to define a welding space for avoiding welding equipment.

[0009] In an optional embodiment, at least one of the two cover plates is rotatably connected with the base, so that the cover plates have a first working position and a second working position which are switched with each other.

[0010] Based on the above scheme, the position of the cover plate relative to the base is adjusted by rotating the cover plate, which is convenient to operate. Moreover, the cover plate and the base are rotatably connected, the cover plate always rotates around a fixed axis, and the position adjustment of the cover plate relative to the base is more accurate.

[0011] In an optional embodiment, a mounting table is arranged on the base, a rotating shaft is arranged on the mounting table, and the cover plate is rotatably connected with the base through the rotating shaft.

[0012] Based on the above scheme, the cover plate and the base are rotatably connected through the rotating shaft, which has a simple connection structure, is convenient to assemble, and has a low manufacturing cost.

[0013] In an optional embodiment, a positioning groove for positioning the workpiece to be welded is arranged on the base.

[0014] Based on the above scheme, the workpiece to be welded is placed in the positioning groove, which can quickly position the workpiece to be welded, improve the accuracy of the position of the workpiece to be welded, reduce the positioning difficulty, and shorten the positioning time and improve the welding efficiency.

[0015] In an optional embodiment, the positioning groove is a gradually changing groove, and the groove width of the positioning groove gradually increases from the groove bottom wall to the groove opening.

[0016] Based on the above scheme, the groove width of the gradually changing positioning groove is inconsistent, which can position workpieces to be welded of different sizes and has a wide range of use.

[0017] In an optional embodiment, an avoiding groove is arranged on the base, the number of the positioning grooves is two and they extend on the same straight line, and the avoiding groove is located between the two positioning grooves and simultaneously communicates with the two positioning grooves.

[0018] Based on the above scheme, when the two workpieces to be welded are butted, the joint position is located at the avoiding groove, and the joint position is not blocked around, which is beneficial to the welding and fixing of the workpieces to be welded by the welding equipment.

[0019] In an optional embodiment, the cover plate comprises a plate body and an anti-skid body, the plate body is movably connected with the base, the anti-skid body is mounted on the plate body, and the anti-skid body is used to contact the workpiece to be welded when the plate body is in the first working position.

[0020] Based on the above scheme, the anti-skid body is in contact with the workpiece to be welded, so that the workpiece to be welded is not easy to slip and has good fixing effect when being pressed on the base.

[0021] In an optional embodiment, the anti-skid body is a silica gel anti-skid pad.

[0022] Based on the above scheme, the silica gel anti-skid pad has simple structure, is easy to process and form, and has low cost.

[0023] In an optional embodiment, the welding jig further comprises a fixing mechanism mounted on one of the base and the cover plate, and the fixing mechanism is used to connect with the other of the base and the cover plate when the cover plate is in the first working position, so as to limit the cover plate from switching from the first working position to the second working position.

[0024] Based on the above scheme, when the cover plate is in the first working position, the cover plate is locked with the base by the fixing mechanism, so that the position of the cover plate relative to the base is firm and reliable, and the workpiece to be welded is not easy to loosen during welding, which does not easily affect the welding quality.

[0025] In an optional embodiment, the fixing mechanism is a magnetic attraction mechanism.

[0026] Based on the above scheme, the cover plate and the base are locked by the magnetic attraction mechanism, which is convenient to operate, and the cover plate is also easy to release after welding or when adjusting the welding position.

[0027] The beneficial effects of the embodiments of the utility model include, for example:

[0028] In summary, the welding jig provided by the embodiment allows the two cover plates to be in the second working position before welding, and the two workpieces to be welded can be placed on the base in any order, i.e., simultaneously or sequentially, and the end portions of the two workpieces to be welded are aligned. Then, the positions of the two cover plates are adjusted so that both of them are switched from the second working position to the first working position, and the two workpieces to be welded are pressed on the base by the two cover plates. At this time, the two workpieces to be welded are always in the state of end portion alignment by the cooperation of the cover plates and the base, and the joint at the aligned position is the welding position, so that the joint position can be welded by the welding equipment. During welding, the cover plates position the workpieces to be welded on the base, so that the positions of the workpieces to be welded are not easy to change, the welding quality is high, repeated positioning before welding is not required, the welding efficiency is high, and the welding cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0030] Figure 1 It is a schematic view of the welding jig of the embodiments of the present application.

[0031] Figure 2 It is a schematic view of the base of the embodiments of the present application.

[0032] Figure 3 It is a schematic view of the cover plate of the embodiments of the present application.

[0033] Figure 4 It is a schematic view of the application of the welding jig of the embodiments of the present application.

[0034] Icon:

[0035] 001-welding workpiece; 100-base; 101-avoidance groove; 102-positioning groove; 110-mounting lug; 120-rotary shaft; 200-cover plate; 210-plate body; 211-clamping groove; 220-anti-skid body; 300-fixing mechanism; 310-first magnetic attraction piece; 320-second magnetic attraction piece. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product is used, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0040] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0042] In the prior art, when the pipe sections of the endoscope insertion tube are welded and fixed, two pipe sections are generally pressed on a platform by hand, and the positioning of the pipe sections is continuously maintained by manual force. In this way, the labor intensity is high, time-consuming and laborious, and there are situations such as pipe section displacement, poor butt joint, etc., which affect the welding efficiency. Since the positioning needs to be repeated after displacement, the positioning time is increased, the welding efficiency is reduced, and the welding cost is increased.

[0043] Therefore, the designer provides a welding fixture which can realize automatic positioning of the pipe section, has low degree of human participation during positioning, low labor intensity, high firmness of pipe section positioning, low displacement of pipe section during welding, high welding quality and low welding cost.

[0044] Please refer to Figure 1 , which shows a schematic view of the cover plate 200 in the first working position. The embodiment provides a welding fixture which includes a base 100 and two cover plates 200, both of which are movably connected with the base 100, so that each cover plate 200 has a first working position and a second working position which can be switched with each other; when in the first working position, the cover plate 200 cooperates with the base 100 to clamp the workpiece to be welded 001, so as to limit the two workpieces to be welded 001 from moving away from each other; when in the second working position, the cover plate 200 releases the workpiece to be welded 001; the two cover plates 200 have a spacing to define a welding space for avoiding welding equipment.

[0045] It should be understood that the welding fixture is not only suitable for welding and fixing of the endoscope insertion tube, but also can be applied to welding and fixing of other workpieces. In the embodiment, the workpiece to be welded 001 is taken as an example of the pipe section of the endoscope insertion tube.

[0046] As described above, the working mode of the welding fixture provided by the embodiment is as follows:

[0047] Please combineFigure 1 and Figure 4 Before welding, first place the two cover plates 200 in the second working position, and place the two workpieces 001 to be welded on the base 100. The two workpieces 001 to be welded can be placed on the base 100 separately, in any order, or placed on the base 100 at the same time for positioning, and the ends of the two workpieces 001 to be welded are aligned. Then, adjust the positions of the two cover plates 200 so that both cover plates 200 are switched from the second working position to the first working position, and use the two cover plates 200 to press the two workpieces 001 to be welded onto the base 100 respectively. At this time, the cover plates 200 and the base 100 cooperate to keep the two workpieces 001 to be welded in a state of end alignment. The seam at the aligned position is the welding position, and the welding equipment can be used to weld the seam position. During the welding process, the cover plates 200 always position the workpieces 001 to be welded on the base 100. The position of the workpieces 001 to be welded is not easily changed, the welding quality is high, and repeated positioning is not required. The welding efficiency is high and the welding cost is low.

[0048] The following embodiments illustrate the detailed structure of the welding fixture of the present application by way of examples.

[0049] Please combine Figure 1 In this embodiment, the welding jig optionally includes a base 100, two cover plates 200, and two fixing mechanisms 300. The two cover plates 200 and the two fixing mechanisms 300 are all mounted on the base 100. Each cover plate 200 is used to cooperate with the base 100 to clamp a workpiece 001 to be welded. The two cover plates 200 cooperate with the base 100 to clamp and position two workpieces 001 to be welded. The two fixing mechanisms 300 cooperate with the two cover plates 200, respectively, to fix the cover plates 200 to the base 100, ensuring that the cover plates 200 will not loosen when the cover plates 200 cooperate with the base 100 to clamp the workpiece 001 to be welded, thereby ensuring the stability and reliability of the clamping.

[0050] It should be understood that before welding, the two workpieces 001 to be welded are connected to the base 100 through the cooperation of the two cover plates 200 and the base 100, and the ends to be welded of the two workpieces 001 to be welded are butted. Since the pressure cover and the base 100 are fixed by the fixing mechanism 300, the pressure cover and the base 100 can press the workpieces 001 to be welded tightly, ensuring the position stability of the workpieces 001 to be welded during the welding process, not easy to loosen, and high welding quality.

[0051] Please combine Figure 1 and Figure 2In the embodiment, the base 100 can be provided as a rectangular plate structure, and the top plate surface of the base 100 is provided with an avoiding groove 101 and two positioning grooves 102. The avoiding groove 101 can be a rectangular groove, and the avoiding groove 101 extends in the width direction of the base 100 and can be provided as a through groove to facilitate processing. Meanwhile, the positioning groove 102 can be a gradually changing groove, that is, the groove width of the positioning groove 102 gradually increases in the direction from the groove bottom of the positioning groove 102 to the groove opening of the positioning groove 102. For example, the positioning groove 102 can be a groove with a cross section in the shape of a "V" or an isosceles trapezoid. The two positioning grooves 102 extend in the length direction of the base 100, and the two positioning grooves 102 are located on the same straight line, and the avoiding groove 101 is located between the two positioning grooves 102, and each positioning groove 102 is communicated with the avoiding groove 101.

[0052] In this way, each positioning groove 102 can position one to-be-welded workpiece 001. For example, when positioning a pipe segment, the length direction of the pipe segment is consistent with the length direction of the positioning groove 102, and the pipe segment is directly placed in the positioning groove 102. Since the positioning groove 102 is a gradually changing groove, it can adaptively position pipe segments with different diameters and has a wide range of use. After two pipe segments are positioned in the two positioning grooves 102 respectively, the joint position of the two pipe segments, that is, the joint, can correspond to the avoiding groove 101, and the joint is exposed around the joint, so that the joint is not blocked and welding is facilitated. After the pipe segment is placed in the positioning groove 102, the pipe segment partially extends out of the groove opening of the positioning groove 102, and the cover plate 200 can press the pipe segment in the positioning groove 102, so that the pipe segment is positioned firmly and reliably.

[0053] Optionally, two mounting lugs 110 are also mounted on the top plate surface of the base 100, and one rotating shaft 120 is mounted on each mounting lug 110. The two cover plates 200 are rotatably connected with the two mounting lugs 110 through the two rotating shafts 120, so as to realize the rotatable connection between the cover plate 200 and the base 100. During the rotation of each cover plate 200 relative to the base 100, the cover plate 200 has a first working position and a second working position which are switched with each other. When the cover plate 200 is rotated to the first working position, the cover plate 200 can clamp the to-be-welded workpiece 001 together with the base 100. When the cover plate 200 is rotated to the second working position, the cover plate 200 releases the to-be-welded workpiece 001. The connection structure of the cover plate 200 and the base 100 is simple, and the position adjustment operation is convenient. Before positioning the to-be-welded workpiece 001, the cover plate 200 is rotated to a position where the positioning groove 102 is exposed, and the space above the positioning groove 102 is not blocked, so that the to-be-welded workpiece 001 can be placed into the positioning groove 102 from above, and the operation is convenient.

[0054] Obviously, in other embodiments, the cover plate 200 can also be movably connected with the base 100 in other ways to achieve adjustment of the working position. For example, the cover plate 200 and the base 100 can be movably connected in a reciprocating sliding manner in the thickness direction of the base 100 to achieve adjustment of the position. In addition, the two cover plates 200 and the base 100 can be connected in the same or different ways.

[0055] Please refer to Figure 1 and Figure 3 Optionally, each cover plate 200 can include a plate body 210 and an anti-skid body 220. The plate body 210 can be an L-shaped plate, and the plate body 210 is rotatably connected with the base 100 through the rotating shaft 120. The anti-skid body 220 is installed on the plate body 210, and the anti-skid body 220 is used to contact the workpiece 001 to be welded when the plate body 210 is in the first working position.

[0056] Optionally, a clamping groove 211 can be provided on the plate body 210, and part of the anti-skid body 220 is inserted and fixed in the clamping groove 211. The anti-skid body 220 can be adhesively fixed with the plate body 210. In addition, the anti-skid body 220 can be a silica gel anti-skid pad or the like. When the anti-skid body 220 contacts the workpiece 001 to be welded and presses the workpiece 001 to be welded on the base 100, the workpiece 001 to be welded is not easy to slip, and the fixing effect is good.

[0057] In the embodiment, optionally, each fixing mechanism 300 can be provided as a magnetic attraction mechanism. For example, each fixing mechanism 300 includes a first magnetic attraction member 310 and a second magnetic attraction member 320. One of the first magnetic attraction member 310 and the second magnetic attraction member 320 is provided as a magnet, and the other is provided as a magnet or a metal member. The first magnetic attraction member 310 can be installed on the top surface of the base 100, and the second magnetic attraction member 320 can be installed on the plate body 210. The second magnetic attraction member 320 is located on the same side of the plate body 210 as the anti-skid body 220. When the cover plate 200 is rotated to the first working position, the first magnetic attraction member 310 and the second magnetic attraction member 320 are magnetically attracted and connected, which serves to fix the cover plate 200, so that the cover plate 200 can continuously provide pressure, thereby enabling the cover plate 200 and the base 100 to clamp the workpiece 001 to be welded. Since the anti-skid body 220 having elastic deformation capability contacts the workpiece 001 to be welded, the anti-skid body 220 generates clamping force through its elastic deformation, so that the anti-skid body 220 can also adapt to the clamping positioning of workpieces 001 to be welded of different sizes.

[0058] It should be understood that in other embodiments, one of the first magnetic attraction member 310 and the second magnetic attraction member 320 can be an electromagnet. When powered on, the electromagnet generates magnetism, and when powered off, the magnetism disappears, which facilitates adjustment of the position of the cover plate.

[0059] The welding jig provided by the embodiment is used for pressing two to-be-welded workpieces 001 on the base 100 by the two cover plates 200 before welding, and the two to-be-welded workpieces 001 are always in an end alignment state, the joint at the alignment position is the welding position, and the joint position is welded by using a welding device, so that the operation is convenient. During the welding process, the cover plate 200 always positions the to-be-welded workpiece 001 on the base 100, the position of the to-be-welded workpiece 001 is not easy to change, the welding quality is high, the to-be-welded workpiece 001 does not need to be repeatedly positioned before welding, the labor intensity is reduced, the welding efficiency is improved, and the welding cost is reduced.

[0060] The above merely describes the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, and all the changes or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A welding jig suitable for welding fixation of an endoscope insertion tube, characterized by, The welding jig comprises a base (100) and two cover plates (200), each of which is movably connected with the base (100) so that each of the cover plates (200) has a first working position and a second working position which are switched with each other; when in the first working position, the cover plate (200) cooperates with the base (100) to clamp a workpiece (001) to be welded so as to limit the two workpieces (001) to be welded away from each other; when in the second working position, the cover plate (200) releases the workpiece (001) to be welded; the two cover plates (200) have a spacing therebetween to define a welding space for avoiding welding equipment.

2. The welding jig according to claim 1, characterized in that: at least one of the two cover plates (200) is rotatably connected with the base (100) so that the cover plate (200) has a first working position and a second working position which are switched with each other.

3. The welding jig according to claim 2, characterized in that: the base (100) is provided with a mounting table, and the mounting table is provided with a rotating shaft (120), and the cover plate (200) is rotatably connected with the base (100) through the rotating shaft (120).

4. The welding jig according to claim 1, characterized in that: the base (100) is provided with a positioning groove (102) for positioning the workpiece (001) to be welded.

5. The welding jig according to claim 4, characterized in that: the positioning groove (102) is a gradually changing groove, and the groove width of the positioning groove (102) gradually increases in the direction from the groove bottom wall of the positioning groove (102) to the groove opening of the positioning groove (102).

6. The welding jig according to claim 4, characterized in that: the base (100) is provided with an avoiding groove (101); the number of the positioning grooves (102) is two and they extend on the same straight line, and the avoiding groove (101) is located between the two positioning grooves (102) and simultaneously communicates with the two positioning grooves (102).

7. The welding jig according to any one of claims 1-6, characterized in that: the cover plate (200) comprises a plate body (210) and an anti-skid body (220), the plate body (210) is movably connected with the base (100), and the anti-skid body (220) is mounted on the plate body (210) and is used to contact the workpiece (001) to be welded when the plate body (210) is in the first working position.

8. The welding jig according to claim 7, characterized in that: the anti-skid body (220) is a silica gel anti-skid pad.

9. The welding jig according to any one of claims 1-6, characterized in that: ​ The welding jig further comprises a fixing mechanism (300) mounted on one of the base (100) and the cover plate (200), the fixing mechanism (300) being used to connect with the other of the base (100) and the cover plate (200) when the cover plate (200) is in the first working position, so as to limit the cover plate (200) from switching from the first working position to the second working position.

10. The welding jig according to claim 9, characterized in that: The fixing mechanism (300) is provided as a magnetic attraction mechanism.

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