Adjustable MPM welding fixture

Abstract

The utility model discloses an adjustable MPM welding clamp, and relates to the field of tube panel machining in boiler manufacturing. The pipe and flat steel welding fixture solves the problems that an existing pipe and flat steel welding fixture is a fixture of a fixed size, welding efficiency is low, universality of the fixture is poor, and cost is high. An upper fixing plate is arranged right above a lower fixing plate in parallel, the head end of the upper fixing plate and the head end of the lower fixing plate are movably connected through a fixing plate connecting piece, the tail end of the upper fixing plate and the tail end of the lower fixing plate are detachably connected through a closed locking device, and a plurality of upper positioning clamping blocks are arranged below the upper fixing plate. A plurality of lower positioning clamping blocks corresponding to the upper positioning clamping blocks one to one are arranged above the lower fixing plate, and the upper positioning clamping blocks and the lower positioning clamping blocks are detachably connected with the upper fixing plate and the lower fixing plate through a plurality of lower fixing plate positioning clamping block connecting pieces respectively. The fixture is used for fixing the pipe and the flat steel, the welding efficiency and the universality of the fixture are improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tube panel processing in boiler manufacturing, especially relates to a welding fixture for fixing the size of pipe diameter and non-fixed flat steel specification, and particularly relates to an adjustable MPM welding fixture. BACKGROUND

[0002] In the manufacturing process of the tube panel, the tube material and the flat steel need to be electrically welded and fixed before the tube panel enters the MPM welding machine. The traditional method is to use a fixed-size clamp to clamp the tube material and the flat steel for welding, which leads to low efficiency. Moreover, because the width and thickness of the flat steel are different, multiple molds need to be made, which consumes financial resources and manpower. Therefore, an adjustable MPM welding fixture is urgently needed. SUMMARY

[0003] The utility model aims at solving the problems of the existing tube material and flat steel welding fixture, such as low welding efficiency, poor generalization of the fixture, and high cost, and further provides an adjustable MPM welding fixture.

[0004] The technical scheme of the utility model is as follows:

[0005] An adjustable MPM welding fixture, the welding fixture comprises a main frame and a clamping device, the main frame comprises a fixed plate connecting piece 1, an upper fixed plate 2, and a lower fixed plate 7, the lower fixed plate 7 is horizontally arranged on an operation table, an upper fixed plate 2 is arranged in parallel above the lower fixed plate 7, the upper fixed plate 2 and the lower fixed plate 7 are movably connected through the fixed plate connecting piece 1 at the first end, and the upper fixed plate 2 and the lower fixed plate 7 are detachably connected through a closing locking device at the tail end, the clamping device comprises the closing locking device, a plurality of upper positioning clamping blocks 3, a plurality of lower positioning clamping blocks 6, and a plurality of positioning clamping block connecting pieces 9, a plurality of upper positioning clamping blocks 3 are evenly arranged from left to right along the length direction of the plate body below the upper fixed plate 2, a plurality of lower positioning clamping blocks 6 corresponding to the plurality of upper positioning clamping blocks 3 are arranged above the lower fixed plate 7, the upper positioning clamping blocks 3 and the lower positioning clamping blocks 6 are respectively detachably connected with the upper fixed plate 2 and the lower fixed plate 7 through the plurality of lower fixed plate 7 positioning clamping block connecting pieces 9, two pipe limiting grooves are respectively arranged on the middle part of the lower end of the upper fixed plate 2 and the middle part of the upper end of the lower fixed plate 7, a tube material is coaxially arranged in the two pipe limiting grooves, a flat steel mounting space is arranged between the lower surface of the upper fixed plate 2 and the upper surface of the lower fixed plate 7, and two flat steels are horizontally arranged on the left and right sides of the tube material, and the two flat steels are located in the flat steel mounting space.

[0006] Further, the welding fixture further comprises a plurality of gaskets 10, and a plurality of gaskets 10 are arranged between the flat steel and the upper fixed plate 2 and / or the lower fixed plate 7.

[0007] Further, the cross section of the pipe limiting groove of the upper positioning clamp block 3 is circular arc-shaped, and the cross section of the pipe limiting groove of the lower positioning clamp block 6 is rectangular.

[0008] Further, the upper fixed plate 2 comprises an upper fixed plate head end connecting part, an upper fixed plate body and an upper fixed plate tail end connecting part, the upper fixed plate body is a rectangular plate structure, the upper fixed plate body head end is provided with an integrally formed upper fixed plate head end connecting part, the upper fixed plate head end connecting part is a N-shaped structure, the upper fixed plate body tail end is provided with an integrally formed upper fixed plate tail end connecting part, and the upper fixed plate tail end connecting part comprises two upper rectangular blocks arranged oppositely.

[0009] Further, the lower fixed plate 7 comprises a lower fixed plate head end connecting part, a lower fixed plate body and a lower fixed plate tail end connecting part, the lower fixed plate body is a rectangular plate structure, the lower fixed plate body head end is provided with an integrally formed lower fixed plate head end connecting part, the lower fixed plate head end connecting part is an inverted T-shaped structure, the lower fixed plate head end connecting part upper end is movably inserted between the two side plates of the upper fixed plate head end connecting part, the lower fixed plate body tail end is provided with an integrally formed lower fixed plate tail end connecting part, and the lower fixed plate tail end connecting part comprises two lower rectangular blocks arranged oppositely.

[0010] Further, the positioning clamp block connecting part 9 is a bolt, the upper fixed plate body and the lower fixed plate body are both provided with a strip-shaped hole penetrating the upper and lower surfaces of the plate body along the length direction of the plate body, the upper surface of the upper fixed plate 2 and the lower surface of the lower fixed plate 7 are both provided with a vertically arranged threaded hole, and the screw rod part of the bolt is connected with the threaded hole of the corresponding upper fixed plate 2 and / or lower fixed plate 7 through the strip-shaped hole.

[0011] Further, the fixed plate connecting part 1 is a pin shaft, the two side plates of the upper fixed plate head end connecting part are provided with coaxially arranged upper pin holes, the longitudinal plate segment of the lower fixed plate head end connecting part is provided with coaxially arranged lower pin holes with the upper pin holes, and the upper fixed plate head end connecting part is rotationally connected with the lower fixed plate head end connecting part through the pin shaft.

[0012] Further, the closing locking device comprises a hinge bolt 4 and a star-shaped handle 5, two third pin holes are coaxially arranged on the two lower rectangular blocks of the lower fixed plate tail end connecting part, the hinge bolt 4 comprises a connecting pin part and a connecting bolt part, the two ends of the connecting pin part are rotatably inserted in the third pin holes of the two lower rectangular blocks, the connecting bolt part is movably inserted between the two upper rectangular blocks, the connecting bolt part head end is provided with a connecting ring, the connecting ring is sleeved on the middle position of the connecting pin part, and the connecting bolt part tail end is screw-connected with the star-shaped handle 5.

[0013] Further, the welding fixture further comprises a positioning device, the positioning device comprises two slide rails 8, the upper fixed plate body is provided with the slide rails 8 arranged in parallel below, the slide rails 8 are fixedly connected with the upper fixed plate first end connecting part and the upper fixed plate last end connecting part at two ends respectively, the upper positioning clamp block 3 is provided with the guide hole matched with the slide rail 8, and the upper positioning clamp block 3 is slidably sleeved on the upper slide rail 8; the lower fixed plate body is provided with the slide rails 8 arranged in parallel above, the slide rails 8 are fixedly connected with the lower fixed plate first end connecting part and the lower fixed plate last end connecting part at two ends respectively, the lower positioning clamp block 6 is provided with the guide hole matched with the slide rail 8, and the lower positioning clamp block 6 is slidably sleeved on the lower slide rail 8.

[0014] Compared with the prior art, the adjustable MPM welding fixture has the following effects:

[0015] The adjustable MPM welding fixture of the utility model is a welding fixture for welding flat steels of the same pipe diameter and different specifications, so that the use efficiency of the same pipe diameter welding fixture is improved, and the manpower and financial resources are effectively reduced.

[0016] 1. Efficiency is improved: the adjustable MPM welding fixture of the utility model can be used for welding flat steels of the same pipe diameter and different specifications at the same time, and the mold does not need to be frequently replaced.

[0017] 2. Accuracy is ensured: the adjustable MPM welding fixture of the utility model can determine the positions of the upper and lower positioning clamp blocks through the positioning device, and the clamping device can stably clamp the pipe and the flat steel.

[0018] 3. Operation is simple: the overall structure of the adjustable MPM welding fixture of the utility model is reasonably designed, each component is simple and easy to understand, workers can master the use method after simple training, and the labor intensity and operation difficulty are reduced.

[0019] 4. Cost is reduced: the adjustable MPM welding fixture of the utility model does not need to design multiple molds due to different specifications of the flat steel, and the same mold can be used for welding various pipe screens as long as the pipe diameters are the same. DRAWINGS

[0020] Figure 1 is the front view of the adjustable MPM welding fixture of the utility model;

[0021] Figure 2 is the top view of the adjustable MPM welding fixture of the utility model.

[0022] In the drawing: 1, fixed plate connecting piece; 2, upper fixed plate; 3, upper positioning clamp block; 4, knuckle bolt; 5, star-shaped handle; 6, lower positioning clamp block; 7, lower fixed plate; 8, slide rail; 9, positioning clamp block connecting piece; 10, gasket. DETAILED DESCRIPTION

[0023] Specific implementation one: combined Figure 1 and Figure 2 To illustrate this embodiment, the adjustable MPM welding fixture of this embodiment includes a main frame and a clamping device. The main frame includes a fixed plate connector 1, an upper fixed plate 2, and a lower fixed plate 7. The lower fixed plate 7 is horizontally arranged on an operating table. An upper fixed plate 2 is arranged in parallel above the lower fixed plate 7. The upper fixed plate 2 and the lower fixed plate 7 are movably connected through the fixed plate connector 1 at the front ends. The upper fixed plate 2 and the lower fixed plate 7 are detachably connected at the ends through a closing locking device. The clamping device includes the closing locking device, a plurality of upper positioning clamping blocks 3, a plurality of lower positioning clamping blocks 6, and a plurality of positioning clamping block connectors 9. A plurality of upper positioning clamping blocks 3 are evenly arranged from left to right below the upper fixed plate 2 along the length direction of the plate body. A plurality of lower positioning clamping blocks 6 are arranged in one-to-one correspondence with the plurality of upper positioning clamping blocks 3 above the lower fixed plate 7. The upper positioning clamping blocks 3 and the lower positioning clamping blocks 6 are respectively detachably connected with the upper fixed plate 2 and the lower fixed plate 7 through the plurality of lower fixed plate 7 positioning clamping block connectors 9. Two pipe limiting grooves are respectively arranged on the middle part of the lower end of the upper fixed plate 2 and the middle part of the upper end of the lower fixed plate 7. A pipe is coaxially arranged in the two pipe limiting grooves. A flat steel installation space is arranged between the lower surface of the upper fixed plate 2 and the upper surface of the lower fixed plate 7. Two flat steels are respectively arranged on the left and right sides of the pipe and are horizontally arranged. The two flat steels are located in the flat steel installation space.

[0024] In this embodiment, the main frame mainly plays a fixing role. The upper positioning clamping blocks 3 and the lower positioning clamping blocks 6 are used to clamp the pipe and the flat steel.

[0025] Specific implementation two: combined Figure 1 and Figure 2 To illustrate this embodiment, the welding fixture of this embodiment further includes a plurality of gaskets 10. A plurality of gaskets 10 are arranged between the flat steel and the upper fixed plate 2 and / or the lower fixed plate 7. In this way, the gaskets 10 are designed in multiple specifications to cooperate with the upper positioning clamping blocks 3 and the lower positioning clamping blocks 6 to clamp flat steels of different thicknesses. The other components and connection relationships are the same as those of specific implementation one.

[0026] Specific implementation three: combined Figure 1 and Figure 2 To illustrate this embodiment, the pipe limiting groove of the upper positioning clamping block 3 of this embodiment is in a circular arc shape, and the pipe limiting groove of the lower positioning clamping block 6 is in a rectangular shape. The other components and connection relationships are the same as those of specific implementation one or two.

[0027] Specific implementation four: combined Figure 1 and Figure 2In this embodiment, the upper fixing plate 2 comprises an upper fixing plate head end connecting part, an upper fixing plate body and an upper fixing plate tail end connecting part. The upper fixing plate body is in the shape of a rectangular plate. The upper fixing plate body head end is provided with an integrally formed upper fixing plate head end connecting part in the shape of a Chinese character "n". The upper fixing plate body tail end is provided with an integrally formed upper fixing plate tail end connecting part comprising two upper rectangular blocks arranged opposite to each other. The other components and connecting relationships are the same as those in Embodiment 1, 2 or 3.

[0028] Embodiment 5: Combination Figure 1 and Figure 2 In this embodiment, the lower fixing plate 7 comprises a lower fixing plate head end connecting part, a lower fixing plate body and a lower fixing plate tail end connecting part. The lower fixing plate body is in the shape of a rectangular plate. The lower fixing plate body head end is provided with an integrally formed lower fixing plate head end connecting part in the shape of an inverted T. The upper end of the lower fixing plate head end connecting part is movably inserted between the two side plates of the upper fixing plate head end connecting part. The lower fixing plate body tail end is provided with an integrally formed lower fixing plate tail end connecting part comprising two lower rectangular blocks arranged opposite to each other. The other components and connecting relationships are the same as those in Embodiment 1, 2, 3 or 4.

[0029] Embodiment 6: Combination Figure 1 and Figure 2 In this embodiment, the positioning clamp block connecting part 9 is a bolt. The upper fixing plate body and the lower fixing plate body are both provided with a strip-shaped hole penetrating the upper and lower surfaces of the plate body and arranged along the length direction of the plate body. The upper surface of the upper fixing plate 2 and the lower surface of the lower fixing plate 7 are both provided with a vertically arranged threaded hole. The screw rod of the bolt is connected with the threaded hole of the corresponding upper fixing plate 2 and / or lower fixing plate 7 through the strip-shaped hole. In this way, the position of the pipe and the flat steel is determined by moving the positions of the upper positioning clamp block 3 and the lower positioning clamp block 6, and then locked by the positioning clamp block connecting part 9. The other components and connecting relationships are the same as those in Embodiment 1, 2, 3, 4 or 5.

[0030] Embodiment 7: Combination Figure 1 and Figure 2 In this embodiment, the fixing plate connecting part 1 is a pin shaft. The two side plates of the upper fixing plate head end connecting part are provided with coaxially arranged upper pin holes. The longitudinal plate segment of the lower fixing plate head end connecting part is provided with a lower pin hole coaxially arranged with the upper pin hole. The upper fixing plate head end connecting part is rotationally connected with the lower fixing plate head end connecting part through the pin shaft. The other components and connecting relationships are the same as those in Embodiment 1, 2, 3, 4, 5 or 6.

[0031] Embodiment 8: Combination Figure 1 andFigure 2 The embodiment is described, the closure locking device of the embodiment comprises a hinge bolt 4 and a star-shaped handle 5, two third pin holes coaxially arranged are opened on the two lower rectangular blocks of the lower fixed plate end connecting part, the hinge bolt 4 comprises a connecting pin portion and a connecting bolt portion, the connecting pin portion is rotatably inserted in the third pin holes of the two lower rectangular blocks at both ends respectively, the connecting bolt portion is movably inserted between the two upper rectangular blocks, the connecting bolt portion is provided with a connecting ring at the first end, the connecting ring is sleeved in the middle position of the connecting pin portion, and the star-shaped handle 5 is screw-connected at the tail end of the connecting bolt portion.Such arrangement, the hinge bolt 4 and the star-shaped handle 5 are used to lock the whole device.The other components and connection relations are the same as those of the first, second, third, fourth, fifth, sixth or seventh specific embodiments.

[0032] Specific embodiment nine: in combination Figure 1 And Figure 2 The embodiment is described, the welding fixture further comprises a positioning device, the positioning device comprises two slide rails 8, the slide rails 8 are arranged in parallel below the upper fixed plate body, and the slide rails 8 are fixedly connected with the upper fixed plate first end connecting part and the upper fixed plate end connecting part at both ends respectively, guide holes matched with the slide rails 8 are opened on the upper positioning clamp block 3, and the upper positioning clamp block 3 is slidably sleeved on the upper slide rail 8;the slide rails 8 are arranged in parallel above the lower fixed plate body, and the slide rails 8 are fixedly connected with the lower fixed plate first end connecting part and the lower fixed plate end connecting part at both ends respectively, guide holes matched with the slide rails 8 are opened on the lower positioning clamp block 6, and the lower positioning clamp block 6 is slidably sleeved on the lower slide rail 8.Such arrangement, the slide rails 8 are used to realize the upper positioning clamp block 3 and the lower positioning clamp block 6, in addition to being used for positioning, also play a certain anti-deformation role.The other components and connection relations are the same as those of the first, second, third, fourth, fifth, sixth, seventh or eighth specific embodiments.

[0033] Working principle

[0034] In combination Figure 1 And Figure 2 The working principle of the adjustable MPM welding fixture is described: according to the outer diameter size of the pipe and the width of the flat steel, the upper positioning clamp block 3 and the lower positioning clamp block 6 are moved, after successful positioning, the appropriate gasket 10 is selected according to the thickness of the flat steel to ensure that the flat steel is in the center position of the pipe and is clamped, and then the star-shaped handle 5 and the hinge bolt 4 are tightened to close and lock the whole device.

[0035] The working process of the adjustable MPM welding fixture is as follows:

[0036] I, preparation work: first, place the tooling on a stable operation table, check whether each part is connected firmly, whether the bolt of the clamping device can rotate smoothly, whether the adjustment of the upper positioning clamp block 3 and the lower positioning clamp block 6 is flexible and accurate, etc.

[0037] II. Place the pipe and flat steel: according to the arrangement of the pipe and flat steel adjust the upper positioning block 3 and the lower positioning block 6 to the appropriate position and tighten the positioning block connector 9, the upper positioning block 3 and the lower positioning block 6 are firmly fixed on the upper fixed plate 2 and the lower fixed plate 7, after fixing, according to the gap between the flat steel and the upper positioning block 3 and the lower positioning block 6, place appropriate gaskets 10 to ensure that the pipe and flat steel are firmly fixed.

[0038] III. Lock the to-be-welded: after checking and confirming that the flat steel and the pipe are firmly fixed, lock the knuckle bolt 4 and the star-shaped handle 5, and lock the entire device to be welded.

[0039] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An adjustable MPM welding fixture, characterized by: The welding fixture comprises a main frame and a clamping device, the main frame comprises a fixed plate connector (1), an upper fixed plate (2) and a lower fixed plate (7), the lower fixed plate (7) is horizontally arranged on an operation table, an upper fixed plate (2) is arranged in parallel above the lower fixed plate (7), the upper fixed plate (2) and the lower fixed plate (7) are movably connected through the fixed plate connector (1) at the first ends, and the upper fixed plate (2) and the lower fixed plate (7) are detachably connected at the ends through a closing locking device, the clamping device comprises the closing locking device, a plurality of upper positioning clamping blocks (3), a plurality of lower positioning clamping blocks (6) and a plurality of positioning clamping block connectors (9), a plurality of upper positioning clamping blocks (3) are evenly arranged from left to right along the length direction of the plate body below the upper fixed plate (2), a plurality of lower positioning clamping blocks (6) are arranged in one-to-one correspondence with the plurality of upper positioning clamping blocks (3) above the lower fixed plate (7), the upper positioning clamping blocks (3) and the lower positioning clamping blocks (6) are respectively detachably connected with the upper fixed plate (2) and the lower fixed plate (7) through the plurality of lower fixed plate (7) positioning clamping block connectors (9), two pipe limiting grooves are respectively arranged in the middle of the lower end of the upper fixed plate (2) and the middle of the upper end of the lower fixed plate (7), a pipe is coaxially arranged in the two pipe limiting grooves, a flat steel mounting space is arranged between the lower surface of the upper fixed plate (2) and the upper surface of the lower fixed plate (7), and two flat steels are horizontally arranged on the left and right sides of the pipe.

2. The adjustable MPM welding fixture of claim 1, wherein: The welding fixture further comprises a plurality of gaskets (10), and a plurality of gaskets (10) are arranged between the flat steels and the upper fixed plate (2) and / or the lower fixed plate (7).

3. An adjustable MPM welding fixture according to claim 1 or 2, characterized in that: The pipe limiting groove of the upper positioning clamping block (3) is in circular arc shape in cross section, and the pipe limiting groove of the lower positioning clamping block (6) is in rectangular shape in cross section.

4. An adjustable MPM welding fixture according to claim 3, characterized in that: The upper fixed plate (2) comprises an upper fixed plate first end connecting portion, an upper fixed plate body and an upper fixed plate end connecting portion, the upper fixed plate body is in rectangular plate structure, the upper fixed plate body is provided with an integrally formed upper fixed plate first end connecting portion at the first end, the upper fixed plate first end connecting portion is in the shape of a Chinese character, the upper fixed plate body is provided with an integrally formed upper fixed plate end connecting portion at the end, and the upper fixed plate end connecting portion comprises two upper rectangular blocks arranged in front and back.

5. An adjustable MPM welding fixture according to claim 4, characterized in that: The lower fixed plate (7) comprises a lower fixed plate first end connecting portion, a lower fixed plate body and a lower fixed plate end connecting portion, the lower fixed plate body is in rectangular plate structure, the lower fixed plate body is provided with an integrally formed lower fixed plate first end connecting portion at the first end, the lower fixed plate first end connecting portion is in inverted T-shaped structure, the lower fixed plate first end connecting portion is movably inserted between the two side plates of the upper fixed plate first end connecting portion at the upper end, the lower fixed plate body is provided with an integrally formed lower fixed plate end connecting portion at the end, and the lower fixed plate end connecting portion comprises two lower rectangular blocks arranged in front and back.

6. An adjustable MPM welding fixture according to claim 5, characterized in that: The positioning clamp block connecting piece (9) is a bolt, and strip-shaped holes penetrating through the upper and lower surfaces of the plate body are arranged along the length direction of the plate body on the upper fixed plate body and the lower fixed plate body. Threaded holes are arranged vertically on the upper surface of the upper fixed plate (2) and the lower surface of the lower fixed plate (7), and the screw rod part of the bolt is connected with the threaded holes of the corresponding upper fixed plate (2) and / or lower fixed plate (7) through the strip-shaped holes.

7. An adjustable MPM welding fixture according to claim 6, characterized in that: The fixed plate connecting piece (1) is a pin shaft, coaxially arranged upper pin holes are arranged on the two side wings of the upper fixed plate first end connecting part, and coaxially arranged lower pin holes are arranged on the longitudinal plate segment of the lower fixed plate first end connecting part. The upper fixed plate first end connecting part is rotationally connected with the lower fixed plate first end connecting part through the pin shaft.

8. An adjustable MPM welding fixture according to claim 7, characterized in that: The closing locking device comprises a hinge bolt (4) and a star-shaped handle (5), and coaxially arranged third pin holes are arranged on the two lower rectangular blocks of the lower fixed plate last end connecting part. The hinge bolt (4) comprises a connecting pin part and a connecting bolt part. The connecting pin part is rotatably inserted into the third pin holes of the two lower rectangular blocks at both ends, and the connecting bolt part is movably inserted between the two upper rectangular blocks. The connecting bolt part is provided with a connecting ring at the first end, the connecting ring is sleeved on the middle position of the connecting pin part, and the star-shaped handle (5) is screw-connected at the end of the connecting bolt part.

9. An adjustable MPM welding fixture according to claim 8, characterized in that: The welding clamp further comprises a positioning device, the positioning device comprises two slide rails (8), the upper fixed plate body is provided with parallelly arranged slide rails (8) below, the slide rails (8) are fixedly connected with the upper fixed plate first end connecting part and the upper fixed plate last end connecting part at both ends, respectively, guide holes matched with the slide rails (8) are arranged on the upper positioning clamp block (3), and the upper positioning clamp block (3) is slidably sleeved on the upper slide rail (8); the lower fixed plate body is provided with parallelly arranged slide rails (8) above, the slide rails (8) are fixedly connected with the lower fixed plate first end connecting part and the lower fixed plate last end connecting part at both ends, respectively, guide holes matched with the slide rails (8) are arranged on the lower positioning clamp block (6), and the lower positioning clamp block (6) is slidably sleeved on the lower slide rail (8).

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