Bourdon tube welding jig

Abstract

The utility model belongs to the technical field of welding jigs, and particularly relates to a bourdon tube welding jig which comprises a support, a workbench, a baffle and a filter box, the upper surface of the support is fixedly connected to the two sides of the bottom of the workbench, the baffle is fixedly connected to the rear portion of the upper surface of the workbench, and the front face of the filter box is fixedly connected to the back face of a fixing plate. A filtering structure is arranged in the filtering box, and a welding mechanism is arranged on the upper surface of the workbench. The welding mechanism comprises a fixing unit and a limiting unit; the fixing unit comprises a first sliding groove, a first sliding block, a fixing plate, a first connecting strip and a fixing block. According to the bourdon tube welding jig, the limiting plate connected to the first containing groove through the spring can automatically adapt to bourdon tubes of different sizes under the elastic force action of the spring and limit the bourdon tubes to the proper position, and the stability and stability of the limiting plate in the moving process are guaranteed through combination of the second sliding block and the moving groove; and reduction of welding precision caused by shaking or dislocation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs, in particular to a spring tube welding jig. Background Art

[0002] The spring tube is a special molded tube with one end closed. When the inside and outside of the tube are subjected to different pressures, it will deform within its elastic limit. The spring tube is a pressure detection element in pressure measuring instruments. It is a hollow tube made of elastic material and bent into a C-shape, spiral or coil spring shape. The earliest spring tube was bent into a C-shape. Because it was invented by the Frenchman E. Bourdon, it is also called the Bourdon tube. It is still widely used today. Its free end is movable and the open end is fixed. When a fluid is passed into the tube, the spring tube is deformed under the action of the fluid pressure, and the free end produces linear displacement or angular displacement. The measurement range of the spring tube can be from tens of kilopascals to more than one gigapascal.

[0003] The Chinese patent with publication number CN202517225U discloses a spring tube welding fixture, including a welding base, the welding base including a spring tube base and a pressure interface tube base, the welding base is fixed on a work surface, and the bottom surface of the welding base is connected to a motor through a rotating shaft. During welding, the driving motor drives the welding base to rotate according to a set angle.

[0004] The above-mentioned prior art solutions have the following defects: the existing limit design may not be able to fully adapt to spring tubes of different sizes and shapes, resulting in unstable position of the spring tube during welding, and may even be offset, thereby affecting the welding quality and efficiency. And a large amount of thick smoke will be generated during the welding process. Since welding involves high-temperature molten metal, this will cause thick smoke in the air, which contains various harmful gases and particulate matter. These thick fumes will not only cause potential harm to the health of operators, such as inhaling harmful gases may cause respiratory diseases, but also may affect the clarity of the working environment, and may even have an adverse effect on the welding quality.

[0005] Therefore, we proposed a spring tube welding jig to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a spring tube welding jig to solve the problem that the limit design proposed in the above background technology cannot fully adapt to spring tubes of different sizes and cannot handle the smoke generated by welding.

[0007] To achieve the above purpose, the utility model provides the following technical solutions: a spring tube welding fixture, comprising a bracket, a workbench, a baffle and a filter box, wherein the upper surface of the bracket is fixedly connected to both sides of the bottom of the workbench, the baffle is fixedly connected to the rear of the upper surface of the workbench, the front of the filter box is fixedly connected to the back of the fixed plate, a filtering structure is arranged inside the filter box, and a welding mechanism is arranged on the upper surface of the workbench;

[0008] The welding mechanism comprises a fixing unit and a limiting unit;

[0009] The fixing unit comprises a first slide groove, a first slider, a fixing plate, a first connecting strip and a fixing block, wherein the first slide groove is arranged on the upper surface of the workbench near the baffle plate, the first slider is slidably connected to the inside of the first slide groove, the bottom of the fixing plate is respectively fixedly connected to both sides of the upper surface of the first slider, and the bottom of the fixing block is movably connected to a side of the fixing plate near each other through the first connecting strip;

[0010] The limiting unit includes a first placement slot, a spring, a limiting plate, a movable slot and a second sliding block. The first placement slot is opened on the left side of the first sliding slot. One end of the spring is fixedly connected to the left wall inside the first placement slot. The other end of the spring is fixedly connected to the left side of the limiting plate. The second sliding block is fixedly connected to both ends of the limiting plate. The movable slots are respectively opened on the front and rear sides of the first placement slot. The second sliding block is slidably connected to the inside of the movable slot.

[0011] Preferably, an air intake pipe is fixedly connected to the upper front side of the baffle, and the back side of the baffle is connected to the filter box, so that the smoke generated during welding can be sucked into the filter box through the air intake pipe and discharged after filtering, thereby effectively purifying the working environment and protecting the health of the operators.

[0012] Preferably, the filter structure includes an exhaust port, a box door, a second chute, a third chute, a filter plate, a through hole and an air suction pump. The box door is hingedly connected to the back of the filter box. The second chute and the third chute are respectively opened on the left and right sides of the filter box. Both ends of the filter plate are slidably connected to the inside of the second chute and the third chute. The through hole is opened on the filter plate. The air suction pump is arranged on the bottom surface of the filter box. The exhaust port is opened at the lower left side of the filter box. The filter plate can slide in the second chute and the third chute for easy cleaning and replacement. The air suction pump can suck smoke into the filter box. After being filtered by the filter plate, the clean air is discharged through the exhaust port.

[0013] Preferably, a filter element is provided inside the filter plate, and the filter element is a polytetrafluoroethylene (PTFE) polyester filter material. The polytetrafluoroethylene (PTFE) polyester filter material has a high efficiency filtering effect, can effectively intercept tiny particles in welding smoke, improve filtering quality, and extend the service life of the filter plate.

[0014] Preferably, a second placement groove is opened on the right side of the movable groove, and the hook is connected to the inside of the second placement groove through a second connecting strip. The design of the second placement groove and the hook enables the spring tube to be fixed to prevent movement.

[0015] Preferably, there are multiple suction pipes, which are equidistantly arranged above the front side of the baffle. Multiple equidistantly arranged suction pipes can more comprehensively capture the smoke generated by welding, improve the purification efficiency, and ensure the cleanliness of the working environment.

[0016] Preferably, there are multiple springs, which are equidistantly fixed to one side of the limit plate. Multiple equidistant springs can support the limit plate more evenly, ensure its stability and stability during movement, and improve welding accuracy and efficiency.

[0017] Preferably, the fixing block is C-shaped, and a thread is provided on the lower surface of the fixing block to increase the friction area and prevent the spring tube from moving.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The spring tube welding fixture is connected to the limit plate of the first placement slot through a spring, and can automatically adapt to spring tubes of different sizes under the elastic force of the spring and limit them to a suitable position. The combination of the second slider and the moving slot ensures the stability and stability of the limit plate during movement, preventing the reduction of welding accuracy due to shaking or misalignment.

[0020] 2. The combination of the first slide groove and the first slider of the spring tube welding jig allows the fixing plate to slide horizontally within a certain range, so that the distance between the fixing plates can be adjusted according to the length of the spring tube. At the same time, the fixing block is movably connected to the fixing plate through the first connecting strip, so that the fixing block can adjust the angle and position as needed to better fix the spring tube.

[0021] 3. The spring tube welding fixture has multiple equally spaced suction pipes installed on the baffle above the workbench, which can effectively capture the smoke generated during welding. The back of the baffle is connected to the side of the filter box, so that the inhaled smoke can smoothly enter the filter box for filtering. The filter plate can efficiently filter and purify the smoke, ensuring the cleanliness of the working environment and the health of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall left side structure of the utility model;

[0024] Figure 3It is a cross-sectional view of the overall right side structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the filter box of the utility model;

[0026] Figure 5 It is a partial structural schematic diagram of the utility model.

[0027] In the figure: 1 bracket, 2 workbench, 201 first placement slot, 202 first slide slot, 203 second placement slot, 3 baffle, 301 suction pipe, 401 first slider, 402 fixed plate, 403 first connecting strip, 404 fixed block, 5 filter box, 501 exhaust port, 502 box door, 503 second slide slot, 504 third slide slot, 505 filter plate, 506 through hole, 507 suction pump, 601 spring, 602 limit plate, 603 movable slot, 604 second slider, 701 second connecting strip, 702 hook. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 5 The utility model provides a technical solution: a spring tube welding fixture, including a bracket 1, a workbench 2, a baffle 3 and a filter box 5. The upper surface of the bracket 1 is fixedly connected to the two sides of the bottom of the workbench 2. The bracket 1 firmly supports the workbench 2, provides a stable working environment, and ensures that the welding fixture is not easy to shake or move during use, thereby improving the accuracy and stability of welding. The baffle 3 is fixedly connected to the rear of the upper surface of the workbench 2, and mainly plays a protective and guiding role. It can prevent spatter or exhaust gas generated during welding from directly escaping to the operating area, protecting the safety of operators. At the same time, the air intake pipe 301 on the baffle 3 can absorb the exhaust gas generated by welding, and purify it through the filter box 5 to reduce environmental pollution. An air intake pipe 301 is fixedly connected to the upper front of the baffle 3, and there are multiple air intake pipes 301, which are equidistantly arranged above the front of the baffle 3. The back of the baffle 3 is connected to the side of the filter box 5. The front of the filter box 5 is fixedly connected to the back of the fixed plate 402, and a filtering structure is arranged inside the filter box 5. A welding mechanism is arranged on the upper surface of the workbench 2;

[0030] The welding mechanism includes a fixing unit and a limiting unit;

[0031] The fixing unit includes a first slide 202, a first slider 401, a fixing plate 402, a first connecting strip 403 and a fixing block 404. The first slide 202 is provided on the upper surface of the workbench 2 near the baffle 3. The first slider 401 is slidably connected to the inside of the first slide 202. The bottom of the fixing plate 402 is respectively fixedly connected to both sides of the upper surface of the first slider 401. The bottom of the fixing block 404 is movably connected to the side of the fixing plate 402 close to each other through the first connecting strip 403. The fixing block 404 is C-shaped, and a thread is provided on the lower surface of the fixing block 404. Through the combination of the first slide 202, the first slider 401, the fixing plate 402, the first connecting strip 403 and the fixing block 404, the position and angle of the fixing block 404 can be flexibly adjusted to adapt to spring tubes of different sizes and shapes. The C-shaped design and the threaded lower surface of the fixing block 404 enhance the stability and friction of the fixation, ensuring that the spring tube will not move or deform during the welding process.

[0032] The limiting unit includes a first placement slot 201, a spring 601, a limiting plate 602, a moving slot 603 and a second slider 604. The first placement slot 201 is opened on the left side of the first slide slot 202. One end of the spring 601 is fixedly connected to the left wall inside the first placement slot 201, and the other end of the spring 601 is fixedly connected to the left side of the limiting plate 602. There are multiple springs 601, which are fixedly connected to one side of the limiting plate 602 at equal intervals. The elastic effect of the spring 601 allows the limiting plate 602 to automatically adjust its position as needed to adapt to spring tubes of different sizes. The second slider 604 is fixedly connected to both ends of the limiting plate 602. The moving slots 603 are opened on the front and rear sides of the first placement slot 201 respectively. The second slider 604 is slidably connected to the inside of the moving slot 603. The design of the moving slot 603 and the second slider 604 ensures the smooth movement of the limiting plate 602 and improves the accuracy and stability of the limiting. A second placement slot 203 is provided on the right side of the movable slot 603 , and the hook 702 is connected to the inside of the second placement slot 203 via a second connecting strip 701 .

[0033] The filter structure includes an exhaust port 501, a box door 502, a second chute 503, a third chute 504, a filter plate 505, a through hole 506 and an air pump 507. The box door 502 is hinged to the back of the filter box 5. The second chute 503 and the third chute 504 are respectively opened on the left and right sides of the filter box 5. The two ends of the filter plate 505 are slidably connected to the second chute 503 and the third chute 504. The through hole 506 is opened on the filter plate 505. The air pump 507 is set on the bottom surface of the filter box 5. The exhaust port 501 is opened at the lower left side of the filter box 5. The air pump 507 is responsible for sucking the exhaust gas into the filter box 5. The filter plate 505 is connected to the second chute 503 and the third chute 504 by sliding, and can be easily replaced or cleaned to ensure the filtering effect. The design of the through hole 506 allows the exhaust gas to pass through the filter plate 505 evenly, thereby improving the filtering efficiency. The exhaust port 501 discharges the purified gas to reduce pollution to the environment.

[0034] Working principle: First, place the spring tube to be welded on the workbench 2 of the welding mechanism, and adjust the positions of the fixing unit and the limiting unit according to the size and shape of the spring tube. The fixing unit moves the first slider 401 in the first slide groove 202, cooperates with the fixing plate 402 and the fixing block 404, and realizes flexible adjustment and stable fixation of the position of the spring tube. At the same time, the limiting unit, through the action of the spring 601, enables the limiting plate 602 to automatically adjust the position in the moving groove 603 through the second slider 604 according to the size of the spring tube, and can fix the spring tube through the hook 702, further ensuring the stability of the spring tube during the welding process. During the welding process, the suction pump 507 starts to work, and the suction pump 507 generates suction, and the exhaust gas generated by welding is sucked into the filter box 5 through the suction pipe 301. The filter plate 505 can effectively remove harmful substances in the exhaust gas to ensure that the exhausted gas meets environmental protection standards. After the welding is completed, turn off the welding equipment, wait for the welding part to cool down, and then remove the welded spring tube.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A spring tube welding jig, comprising a bracket (1), a workbench (2), a baffle (3) and a filter box (5), characterized in that: The upper surface of the bracket (1) is fixedly connected to the two sides of the bottom of the workbench (2), the baffle (3) is fixedly connected to the rear of the upper surface of the workbench (2), the front of the filter box (5) is fixedly connected to the back of the fixed plate (402), a filter structure is arranged inside the filter box (5), and a welding mechanism is arranged on the upper surface of the workbench (2); The welding mechanism comprises a fixing unit and a limiting unit; The fixing unit comprises a first slide groove (202), a first slider (401), a fixing plate (402), a first connecting strip (403) and a fixing block (404); the first slide groove (202) is arranged on the upper surface of the workbench (2) near the baffle (3); the first slider (401) is slidably connected to the inside of the first slide groove (202); the bottom of the fixing plate (402) is respectively fixedly connected to both sides of the upper surface of the first slider (401); the bottom of the fixing block (404) is movably connected to a side of the fixing plate (402) close to each other through the first connecting strip (403); The limiting unit comprises a first placement slot (201), a spring (601), a limiting plate (602), a movable slot (603) and a second sliding block (604); the first placement slot (201) is arranged on the left side of the first sliding slot (202); one end of the spring (601) is fixedly connected to the left wall inside the first placement slot (201); the other end of the spring (601) is fixedly connected to the left side of the limiting plate (602); the second sliding block (604) is fixedly connected to both ends of the limiting plate (602); the movable slot (603) is respectively arranged on the front and rear sides of the first placement slot (201); and the second sliding block (604) is slidably connected to the inside of the movable slot (603).

2. The spring tube welding jig according to claim 1, characterized in that: An air intake pipe (301) is fixedly connected to the upper front of the baffle plate (3), and the back of the baffle plate (3) is in communication with a side connected to the filter box (5).

3. The spring tube welding jig according to claim 1, characterized in that: The filtering structure comprises an exhaust port (501), a box door (502), a second slide groove (503), a third slide groove (504), a filter plate (505), a through hole (506) and an air suction pump (507); the box door (502) is hingedly connected to the back of the filter box (5); the second slide groove (503) and the third slide groove (504) are respectively opened on the left and right sides of the inside of the filter box (5); the two ends of the filter plate (505) are slidably connected to the inside of the second slide groove (503) and the third slide groove (504); the through hole (506) is opened on the filter plate (505); the air suction pump (507) is arranged on the bottom surface of the inside of the filter box (5); and the exhaust port (501) is opened at the lower left side of the filter box (5).

4. The spring tube welding jig according to claim 3, characterized in that: A filter element is arranged inside the filter plate (505), and the filter element is a polytetrafluoroethylene polyester filter material.

5. The spring tube welding jig according to claim 1, characterized in that: A second placement groove (203) is provided on the right side of the movable groove (603), and the hook (702) is connected to the inside of the second placement groove (203) via a second connecting strip (701).

6. The spring tube welding jig according to claim 2, characterized in that: There are a plurality of air intake pipes (301), which are arranged equidistantly above the front surface of the baffle (3).

7. The spring tube welding jig according to claim 1, characterized in that: There are a plurality of springs (601) which are fixedly connected to one side of the limiting plate (602) at equal intervals.

8. The spring tube welding jig according to claim 1, characterized in that: The fixing block (404) is C-shaped, and a thread is formed on the lower surface of the fixing block (404).

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