Clamping structure for valve casting welding

Abstract

The utility model belongs to the technical field of welding machining clamping, and particularly relates to a clamping structure for valve casting welding, which comprises a rack, a fixed seat, a first clamping disc, a movable seat, a second clamping disc and a limiting track, the fixed seat is arranged on the rack, and the first clamping disc for clamping a valve body is arranged on the fixed seat; the movable seat is arranged on the rack and located on one side of the fixed seat, the movable seat can be close to or away from the fixed seat on the rack, and a second clamping disc used for clamping the flange is arranged on the movable seat; the limiting rail is arranged on the rack, and the limiting rail can enable the movable seat to be always aligned with the fixed seat in the process of moving relative to the fixed seat; compared with the prior art, the clamping structure for welding the valve casting has the advantages that the valve body and the flange can be accurately positioned, the operation difficulty of workers is reduced, and meanwhile, the welding precision of the valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding processing clamping, in particular to a clamping structure for welding valve castings. Background Art

[0002] Valve castings refer to valve components produced through a casting process; valve casting welding refers to the use of welding technology to connect castings during the manufacture or repair of valves.

[0003] In existing valve casting welding operations, when welding the flange to the valve body, the valve body is first clamped and fixed by a fixture, and then the worker holds the flange and the valve body by hand to position them, and then welds the two together by hand. This positioning method requires workers to have rich work experience, and it is very difficult to ensure the positioning accuracy. The quality of the welded valve is difficult to guarantee, so there is an urgent need to improve this welding method. Utility Model Content

[0004] The purpose of the utility model is to provide a clamping structure for welding valve castings in order to solve the above-mentioned technical problems. The clamping structure for welding valve castings can accurately position the valve body and flange, reduce the difficulty of operation for workers, and improve the accuracy of valve welding.

[0005] In view of this, the utility model provides a clamping structure for welding valve castings, comprising:

[0006] A frame, wherein a fixing seat is provided on the frame, and a first clamping disc for clamping the valve body is provided on the fixing seat;

[0007] A movable seat is provided on the frame and is located on one side of the fixed seat. The movable seat can move closer to and farther from the fixed seat on the frame. The movable seat is provided with a second clamping plate for clamping the flange.

[0008] The limiting track is arranged on the frame. The limiting track can make the movable seat always aligned with the fixed seat during the movement relative to the fixed seat, so that the flange and the valve body remain coaxial.

[0009] In this technical solution, the valve body to be welded is clamped by the first clamping plate, the flange to be welded is clamped by the second clamping plate, and then the movable seat is moved horizontally on the limiting track close to the fixed seat. During this process, the movable seat carries the second clamping plate and the clamped flange coaxially close to the valve body clamped by the first clamping plate on the fixed seat. Finally, the flange is in contact with the valve body and positioned. At this time, the worker welds the valve body and the flange.

[0010] In the above technical solution, further, two mounting grooves are respectively provided on both sides of the upper surface of the frame, and the limiting track includes two limiting plates, which are respectively slidably arranged in the mounting grooves along the vertical direction, and a plurality of serrated bars are spaced apart on the limiting plates in a direction perpendicular to the moving direction of the movable seat, and the serrated bars extend from the bottom of the movable seat to the bottom of the fixed seat, and a first serrated groove adapted to the serrated bar is provided on the bottom surface of the fixed seat, and a second serrated groove adapted to the serrated bar is provided on the bottom surface of the movable seat.

[0011] In the above technical solution, further, an adjustment slot is provided at the bottom of the frame, the bottom surfaces of the two limit plates are connected to the same lifting plate, and an adjustment mechanism is provided on the frame for driving the lifting plate to slide vertically in the adjustment slot.

[0012] In the above technical solution, further, the regulating mechanism includes:

[0013] Threaded hole, the threaded hole is opened on the lifting plate;

[0014] The fixing plate is arranged on the frame and located above the threaded hole. An adjusting screw coaxial with the threaded hole is rotatably provided on the fixing plate, and the threaded end of the adjusting screw is threadedly connected with the threaded hole.

[0015] In the above technical solution, further, a connecting groove is opened on the side of the frame away from the fixing seat, the connecting groove passes through the side wall of the frame, and a connecting block is provided at the bottom of the fixing seat that is horizontally slidably connected to the connecting groove.

[0016] In the above technical solution, further, there is a gap between the side wall of the connecting block and the side wall of the connecting groove in the width direction.

[0017] The beneficial effects of the utility model are:

[0018] 1. The valve body is clamped by the first clamping disc on the fixed seat, and the flange is clamped by the second clamping disc on the movable seat. Then, the movable seat is moved horizontally close to the fixed seat through the limiting track. During the horizontal movement of the movable seat, the flange and the valve body remain coaxial. This allows for precise positioning of the valve body and flange, reduces the difficulty of operation for workers, and improves the accuracy of valve welding.

[0019] 2. By designing the limiting track into two limiting plates and a plurality of serrated bars spaced apart on each limiting plate along a direction perpendicular to the moving direction of the movable seat, and providing a plurality of first serrated grooves on the fixed seat and a plurality of second serrated grooves on the movable seat, a fixed route of three points in a straight line is formed between the fixed seat, the movable seat and the limiting track, so that the flange and the valve body can approach each other in a coaxial manner, thereby ensuring the positioning accuracy of the valve body and the flange.

[0020] 3. By opening a connecting groove on the frame, the connecting groove runs through the side wall of the frame, and the movable seat is slidably connected to the connecting groove through a connecting block, and there is a gap between the connecting block and the connecting groove in the width direction, which makes it easy to disassemble and assemble the movable seat and the frame, and reduces the difficulty of connecting between the connecting block and the connecting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model in the first direction.

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model in the second direction.

[0024] Figure 3 It is a side view structural diagram of the utility model.

[0025] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the middle BB direction.

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model in the first direction of the workpiece clamping state.

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the utility model in the second direction of the workpiece clamping state.

[0028] Figure 7 for Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0029] The marks in the figure are:

[0030] 1. Frame; 2. Fixed seat; 201. First serrated groove; 3. First clamping plate; 4. Movable seat; 401. Second serrated groove; 5. Second clamping plate; 6. Limit rail; 601. Limit plate; 602. Sawtooth bar; 7. Mounting slot; 8. Adjustment slot; 9. Lifting plate; 10. Adjustment mechanism; 1001. Threaded hole; 1002. Fixed plate; 1003. Adjustment screw; 11. Connecting groove; 12. Connecting block; 100. Valve body; 200. Flange DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present utility model, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0033] Example 1

[0034] like Figures 1-6 As shown, this embodiment provides a clamping structure for welding valve castings, including: a frame 1, a fixed seat 2, a first clamping plate 3, a movable seat 4, a second clamping plate 5, a limiting rail 6,

[0035] See also Figure 1 , a fixing seat 2 is provided on the frame 1, the fixing seat 2 is fixed to the frame 1 by fasteners, and a first clamping disc 3 for clamping the valve body 100 is provided on the fixing seat 2;

[0036] The movable seat 4 is provided on the frame 1 and is located on one side of the fixed seat 2. The movable seat 4 can move closer to and away from the fixed seat 2 on the frame 1. The movable seat 4 is provided with a second clamping plate 5 for clamping the flange 200.

[0037] In this embodiment, please refer to Figure 3 The first clamping disc 3 and the second clamping disc 5 are coaxially distributed. The first clamping disc 3 and the second clamping disc 5 can both adopt the clamping structure in the prior art, such as a three-jaw chuck. The first clamping disc 3 and the second clamping disc 5 can be rotatably connected to the fixed seat 2 and the movable seat 4 respectively, so that the valve body 100 and the flange 200 can be driven to rotate during the welding process, thereby improving the welding efficiency. For a schematic diagram of the valve body 100 and the flange 200 being clamped, please refer to Figure 5 and Figure 6 ;

[0038] The limiting rail 6 is provided on the frame 1. The limiting rail 6 enables the movable seat 4 to always be aligned with the fixed seat 2 during the movement relative to the fixed seat 2, thereby keeping the flange 200 and the valve body 100 coaxial.

[0039] In this embodiment, the valve body 100 to be welded is clamped by the first clamping plate 3, and the flange 200 to be welded is clamped by the second clamping plate 5, and then the movable seat 4 is moved horizontally on the limiting track 6 close to the fixed seat 2. During this process, the movable seat 4 carries the second clamping plate 5 and the clamped flange 200 coaxially close to the valve body 100 clamped by the first clamping plate 3 on the fixed seat 2, and finally the flange 200 is contacted and positioned with the valve body 100. At this time, the worker welds the valve body 100 and the flange 200; during the horizontal movement of the movable seat 4, the flange 200 remains coaxial with the valve body 100, so that the valve body 100 and the flange 200 can be accurately positioned, which reduces the operating difficulty of the workers and improves the accuracy of valve welding.

[0040] Example 2

[0041] This embodiment provides a clamping structure for welding valve castings. In addition to the technical solutions of the above embodiments, it also discloses an arrangement of the limiting rail 6.

[0042] In this embodiment, please refer to Figure 4 Two mounting slots 7 are provided on both sides of the upper surface of the machine frame. The limiting track 6 includes two limiting plates 601. The two limiting plates 601 are respectively slidably arranged in the mounting slots 7 along the vertical direction. A plurality of sawtooth strips 602 are distributed on the limiting plates 601 at intervals perpendicular to the moving direction of the movable seat 4. The sawtooth strips 602 extend from the bottom of the movable seat 4 to the bottom of the fixed seat 2. Please refer to Figure 1 and Figure 7 The bottom surface of the fixing seat 2 is provided with a first sawtooth groove 201 adapted to the sawtooth bar 602, see Figure 4 The bottom surface of the movable seat 4 is provided with a second sawtooth groove 401 adapted to the sawtooth bar 602;

[0043] An adjustment slot 8 is provided at the bottom of the frame 1. The bottom surfaces of the two limit plates 601 are connected to the same lifting plate 9. An adjustment mechanism 10 is provided on the frame 1 for driving the lifting plate 9 to slide vertically in the adjustment slot 8.

[0044] For details, please refer to Figure 2 The adjustment mechanism 10 includes: a threaded hole 1001, a fixing plate 1002, and an adjustment screw 1003.

[0045] One end of the lifting plate 9 extends to the side of the frame 1, and a threaded hole 1001 is opened at this end of the lifting plate 9. The threaded hole 1001 passes through the upper and lower surfaces of the lifting plate 9;

[0046] A fixing plate 1002 is provided on the side wall of the frame 1 and is located above the threaded hole 1001. An adjusting screw 1003 coaxial with the threaded hole 1001 is rotatably provided on the fixing plate 1002. The threaded end of the adjusting screw 1003 is threadedly connected to the threaded hole 1001.

[0047] In this embodiment, rotating the adjusting screw 1003 can drive the lifting plate 9 to rise and fall in the adjusting slot 8. When the clamping structure of this embodiment is not in use, the two limit plates 601 can be hidden in the two mounting slots 7 respectively. At this time, the serrated bar 602 on the limit plate 601 will not limit the adjustment of the horizontal position and horizontal angle of the movable seat 4, and can also prevent the serrated bar 602 from being damaged by external objects. When the valve body 100 and the flange 200 need to be welded, the valve body 100 and the flange 200 are first clamped by the first clamping plate 3 and the second clamping plate 5 respectively, and then the adjusting screw 1003 is rotated to drive the lifting plate 9 to rise. During this process, the multiple serrated bars 602 on the two limit plates 601 are respectively inserted into the corresponding first serrated groove 201 and the second serrated groove 401, aligning the fixed seat 2 with the movable seat 4, so that the valve body 100 and the flange 200 remain coaxial.

[0048] In this embodiment, when fixing the fixing base 2 on the frame 1, the lifting plate 9 can also be raised to a predetermined position in the installation groove 7 before installing the fixing base 2. In this way, the installation of the fixing base 2 can be positioned, reducing the difficulty of installing the fixing base 2.

[0049] Example 3

[0050] This embodiment provides a clamping structure for welding valve castings, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0051] See also Figure 2 A connecting groove 11 is provided on the side of the frame 1 away from the fixed seat 2. The connecting groove 11 passes through the side wall of the frame 1. A connecting block 12 is provided at the bottom of the fixed seat 2 and is horizontally slidably connected to the connecting groove 11. The movable seat 4 can be removed from the frame 1 by pulling the connecting block 12 out from the end of the connecting groove 11. The movable seat 4 can be installed on the frame 1 by inserting the connecting block 12 into the end of the connecting groove 11. In this way, the movable seat 4 and the frame 1 can be quickly disassembled and connected by cooperating with the connecting block 12 and the connecting groove 11, thereby reducing the weight of the clamping structure of this embodiment during transportation.

[0052] Preferably, there is a gap between the side wall of the connecting block 12 and the side wall of the connecting groove 11 in the width direction. In this way, in the process of inserting the connecting block 12 into the connecting groove 11, due to the gap between the two, the connecting block 12 can be easily inserted into the connecting groove 11, reducing the difficulty of installing the movable seat 4 on the frame 1. At the same time, the serrated bar 602 on the limiting plate 601 cooperates with the second serrated groove 401 on the movable seat 4 to ensure that the trajectory of the movable seat 4 moving on the frame 1 is a straight line and will not be affected by this gap.

[0053] The embodiments of the present invention are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A clamping structure for welding valve castings, characterized in that: include: A frame (1), wherein a fixing seat (2) is provided on the frame (1), and a first clamping disc (3) for clamping a valve body (100) is provided on the fixing seat (2); a movable seat (4), the movable seat (4) being arranged on the frame (1) and located on one side of the fixed seat (2), the movable seat (4) being capable of moving closer to and farther from the fixed seat (2) on the frame (1), and the movable seat (4) being provided with a second clamping plate (5) for clamping the flange (200); A limiting rail (6) is provided on the frame (1), and the limiting rail (6) enables the movable seat (4) to always be aligned with the fixed seat (2) during the process of moving relative to the fixed seat (2), thereby keeping the flange (200) and the valve body (100) coaxial.

2. The valve casting welding clamping structure according to claim 1, characterized in that: Two mounting grooves (7) are respectively provided on both sides of the upper surface of the frame (1); the limiting track (6) includes two limiting plates (601); the two limiting plates (601) are respectively slidably arranged in the mounting grooves (7) along the vertical direction; a plurality of sawtooth bars (602) are spaced apart on the limiting plates (601) along a direction perpendicular to the moving direction of the movable seat (4); the sawtooth bars (602) extend from the bottom of the movable seat (4) to the bottom of the fixed seat (2); a first sawtooth groove (201) adapted to the sawtooth bar (602) is provided on the bottom surface of the fixed seat (2); and a second sawtooth groove (401) adapted to the sawtooth bar (602) is provided on the bottom surface of the movable seat (4).

3. The valve casting welding clamping structure according to claim 2, characterized in that: An adjustment slot (8) is provided at the bottom of the frame (1); the bottom surfaces of the two limit plates (601) are connected to the same lifting plate (9); and an adjustment mechanism (10) is provided on the frame (1) for driving the lifting plate (9) to slide vertically in the adjustment slot (8).

4. A valve casting welding clamping structure according to claim 3, characterized in that: The regulating mechanism (10) comprises: a threaded hole (1001), the threaded hole (1001) being provided on the lifting plate (9); A fixing plate (1002) is provided on the frame (1) and is located above the threaded hole (1001); an adjusting screw (1003) coaxial with the threaded hole (1001) is rotatably provided on the fixing plate (1002); a threaded end of the adjusting screw (1003) is threadedly connected to the threaded hole (1001).

5. The valve casting welding clamping structure according to claim 3, characterized in that: A connecting groove (11) is provided on a side of the frame (1) away from the fixing seat (2), and the connecting groove (11) passes through the side wall of the frame (1). A connecting block (12) is provided at the bottom of the fixing seat (2) and is horizontally slidably connected to the connecting groove (11).

6. The valve casting welding clamping structure according to claim 5, characterized in that: There is a gap between the side wall of the connecting block (12) and the side wall of the connecting groove (11) in the width direction.

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