Fixture for heating and ventilation pipe welding

Abstract

The utility model discloses a heating and ventilation pipe welding clamp, which comprises an adjusting mechanism and a clamping mechanism arranged on the top of the adjusting mechanism, the adjusting mechanism comprises a base, the clamping mechanism comprises moving seats, the moving seats are correspondingly arranged on the left side and the right side of the top of the base, the top of each moving seat is fixedly connected with a fixing plate, and the fixing plates are fixedly connected with the adjusting mechanism. The opposite sides of the fixing plates are fixedly connected with an inflation shell, and the opposite sides of the inflation shell are fixedly connected with a plurality of rubber suction heads. The equipment has the advantages of being convenient to adjust and stable in clamping effect, and solves the problems that part of clamps are designed in a fixed mode, the clamping effect on the heating and ventilation pipes is not ideal enough, adjustment is inconvenient to conduct according to the specifications of the heating and ventilation pipes, rapid adjustment is inconvenient to adapt to heating and ventilation pipelines of different specifications and diameters, and the clamping effect is poor. Therefore, the problems that different clamps are needed when a welding object is replaced every time, the cost is increased, and the working efficiency is reduced are possibly caused.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC pipe welding fixtures, in particular to a HVAC pipe welding fixture. Background Art

[0002] When welding HVAC pipes, the clamps are mainly used to fix and position the pipes to ensure precise docking and stability during the welding process. Pipe fixing clamps are one of the common HVAC pipe welding clamps. Pipe fixing clamps are used to stably fix the pipes in a predetermined position before welding to prevent deformation or movement due to heat during the welding process.

[0003] Some clamps are fixed in design, which not only have an unsatisfactory clamping effect on HVAC pipes, but are also inconvenient to adjust according to the specifications of the HVAC pipes. It is not easy to quickly adjust to adapt to HVAC pipes of different specifications and diameters. This may result in the need for a different clamp each time the welding object is changed, increasing costs and reducing work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a clamp for HVAC pipe welding, which has the advantages of easy adjustment and stable clamping effect, and solves the problem that some clamps are of fixed design, which not only has an unsatisfactory clamping effect on the HVAC pipe, but is also inconvenient to adjust according to the specifications of the HVAC pipe, and is not convenient to quickly adjust to adapt to HVAC pipes of different specifications and diameters. This may result in the need for a different clamp each time the welding object is changed, thereby increasing costs and reducing work efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a HVAC pipe welding fixture, comprising an adjustment mechanism and a clamping mechanism arranged on the top thereof, wherein the adjustment mechanism comprises a base:

[0006] The clamping mechanism includes a movable seat, which is correspondingly arranged on the left and right sides of the top of the base, a fixed plate is fixedly connected to the top of the movable seat, an inflatable shell is fixedly connected to the opposite side of the fixed plate, a plurality of rubber suction heads are fixedly connected to the opposite side of the inflatable shell, an air pump is fixedly connected to the opposite side of the fixed plate, an air outlet end of the air pump is fixedly connected to one side of the inflatable shell, and an air suction pipe is fixedly connected to the air suction end of the air pump.

[0007] As a preferred HVAC pipe welding clamp of the utility model, limiting grooves are provided on the front and rear sides of the top of the base, limiting blocks are fixedly connected to the front and rear sides of the bottom of the movable seat, the limiting blocks are slidably connected to the limiting grooves, and an installation groove is provided on the opposite side of the top of the movable seat.

[0008] As a preferred HVAC pipe welding clamp of the utility model, the left and right sides of the top of the base are fixedly connected with fixing frames, the top of the fixing frame is rotatably connected with a bidirectional threaded rod, one end of the bidirectional threaded rod is fixedly connected with a power motor, the power motor is fixedly connected to one side of the fixing frame, and the left and right sides of the surface of the bidirectional threaded rod are threadedly connected with fixing plates.

[0009] As a preferred HVAC pipe welding clamp of the utility model, an arc-shaped support plate is rotatably connected inside the installation groove, a telescopic member is rotatably connected to the front and rear sides of the bottom of the arc-shaped support plate, and a sliding sleeve is rotatably connected to the bottom of the telescopic member.

[0010] As a preferred HVAC pipe welding clamp of the utility model, the inner wall of the sliding sleeve is slidably connected with a positioning rod, the positioning rod is fixedly connected to the inner wall of the mounting groove, and movable sleeves on the front and rear sides of the positioning rod surface are provided with a second spring fixedly connected between the mounting groove and the sliding sleeve.

[0011] As a preferred HVAC pipe welding clamp of the utility model, the telescopic part includes a telescopic rod, one end of which is rotatably connected to the front and rear sides of the bottom of the arc-shaped support plate, a positioning sleeve is slidably connected to the surface of the telescopic rod, and the bottom of the telescopic rod is rotatably connected to the top of the sliding sleeve.

[0012] As a preferred embodiment of the HVAC pipe welding clamp of the utility model, a first spring is fixedly connected between the telescopic rod and the positioning sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. In order to effectively clamp the HVAC pipe, the operator can place one end of the HVAC pipe to be welded on the top of the arc-shaped support plate, and then drive the two fixing plates gradually close to the left and right ends of the HVAC pipe through the adjustment mechanism until the rubber suction head fits with the left and right ends of the HVAC pipe, and then start the air pump. When the air pump inflates the air into the inflatable shell, the pressure in the inflatable shell increases, causing the multiple rubber suction heads fixed to it to expand. Due to the good elasticity and sealing of the rubber material, it can be tightly adsorbed on the surface of the HVAC pipe to achieve flexible and stable clamping of the pipe. The clamping mechanism is designed using the pneumatic principle of the HVAC pipe welding clamp, which not only achieves efficient and flexible clamping of the pipe, but also avoids the stress concentration problem that may be caused by traditional hard clamps, which helps to improve welding quality and work efficiency.

[0015] 2. The left and right sides of the bidirectional threaded rod provided in the utility model have threads in opposite directions which are respectively threadedly connected to the two fixed plates. When the bidirectional threaded rod rotates, the fixed plates will make linear motion along the direction of the threads. Such a design can realize synchronous, precise and stable adjustment of the movable seat in the left and right directions to meet the welding requirements of HVAC pipes of different diameters or special positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3 It is a cross-sectional view of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the adjustment mechanism of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the clamping mechanism of the utility model;

[0021] Figure 6 It is a cross-sectional view of the telescopic member of the utility model.

[0022] In the figure: 1. adjusting mechanism; 101. base; 102. limiting groove; 103. fixing frame; 104. bidirectional threaded rod; 105. power motor; 2. clamping mechanism; 201. moving seat; 202. fixing plate; 203. inflatable shell; 204. rubber suction head; 205. air pump; 206. exhaust pipe; 207. limiting block; 208. mounting groove; 209. arc-shaped support plate; 210. telescopic member; 211. telescopic rod; 212. positioning sleeve; 213. first spring; 214. sliding sleeve; 215. positioning rod; 216. second spring. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 6 A clamp for HVAC pipe welding includes an adjusting mechanism 1 and a clamping mechanism 2 arranged on the top thereof, wherein the adjusting mechanism 1 includes a base 101:

[0024] Furthermore, the clamping mechanism 2 includes a movable seat 201, which is correspondingly arranged on the left and right sides of the top of the base 101. A fixed plate 202 is fixedly connected to the top of the movable seat 201, an inflatable shell 203 is fixedly connected to the opposite side of the fixed plate 202, a plurality of rubber suction heads 204 are fixedly connected to the opposite side of the inflatable shell 203, an air pump 205 is fixedly connected to the opposite side of the fixed plate 202, an air outlet end of the air pump 205 is fixedly connected to one side of the inflatable shell 203, and an air extraction pipe 206 is fixedly connected to the air extraction end of the air pump 205.

[0025] In order to effectively clamp the HVAC pipe, the operator can place one end of the HVAC pipe to be welded on the top of the arc-shaped support plate 209, and then drive the two fixing plates 202 to gradually approach the left and right ends of the HVAC pipe through the adjustment mechanism 1 until the rubber suction head 204 fits with the left and right ends of the HVAC pipe, and then start the air pump 205. When the air pump 205 inflates the air into the inflatable shell 203, the pressure in the inflatable shell 203 increases, causing the multiple rubber suction heads 204 fixed thereto to expand. Due to the good elasticity and sealing properties of the rubber material, it can be tightly adsorbed on the surface of the HVAC pipe, thereby achieving flexible and stable clamping of the pipe. The set clamping mechanism 2 is a HVAC pipe welding fixture designed using pneumatic principles, which not only achieves efficient and flexible clamping of the pipe, but also avoids the stress concentration problem that may be caused by traditional hard clamps, which helps to improve welding quality and work efficiency.

[0026] Furthermore, limiting grooves 102 are opened on the front and rear sides of the top of the base 101, and limiting blocks 207 are fixedly connected to the front and rear sides of the bottom of the movable seat 201. The limiting blocks 207 are slidably connected to the limiting grooves 102, and an installation groove 208 is opened on the opposite side of the top of the movable seat 201.

[0027] When the movable seat 201 moves on the base 101, the limit block 207 will slide in the limit groove 102, which not only ensures that the movable seat 201 can only move smoothly along the left and right directions of the base 101, but also effectively prevents the movable seat 201 from shifting during the clamping and welding process, thereby improving the clamping stability and the accuracy of the welding position.

[0028] Furthermore, a fixing frame 103 is fixedly connected to the left and right sides of the top of the base 101, a bidirectional threaded rod 104 is rotatably connected to the top of the fixing frame 103, one end of the bidirectional threaded rod 104 is fixedly connected to a power motor 105, the power motor 105 is fixedly connected to one side of the fixing frame 103, and a fixing plate 202 is threadedly connected to the left and right sides of the surface of the bidirectional threaded rod 104.

[0029] The bidirectional threaded rod 104 is provided with threads in opposite directions on the left and right sides of the surface, which are respectively threadedly connected to the two fixed plates 202. When the bidirectional threaded rod 104 rotates, the fixed plate 202 will move linearly along the direction of the thread. Such a design can realize synchronous, precise and stable adjustment of the movable seat 201 in the left and right directions to meet the welding requirements of HVAC pipes of different diameters or special positions.

[0030] Furthermore, an arc-shaped support plate 209 is rotatably connected inside the installation groove 208 , a telescopic member 210 is rotatably connected to the front and rear sides of the bottom of the arc-shaped support plate 209 , and a sliding sleeve 214 is rotatably connected to the bottom of the telescopic member 210 .

[0031] The front and rear sides of the bottom of the arc-shaped support plate 209 are rotatably connected with telescopic parts 210. The function of the telescopic parts 210 is to keep the arc-shaped support plate 209 in contact with the pipeline while being able to adjust the telescopic parts up and down according to the length of different pipelines or changes in welding positions, thereby ensuring that the pipeline is always in a stable state during the welding process.

[0032] Furthermore, a positioning rod 215 is slidably connected to the inner wall of the sliding sleeve 214 , and the positioning rod 215 is fixedly connected to the inner wall of the mounting groove 208 . A second spring 216 fixedly connected between the mounting groove 208 and the sliding sleeve 214 is movably sleeved on the front and rear sides of the surface of the positioning rod 215 .

[0033] The sleeve 214 can slide back and forth on the positioning rod 215 but will not separate from the positioning rod 215, thereby ensuring the stable sliding of the telescopic member 210 within the range of motion, and guiding and limiting the lateral movement of the sleeve 214 through the positioning rod 215. In actual work, when the pipeline expands due to heat or produces a slight displacement due to welding stress, the second spring 216 can play a good buffering role, reduce the impact force directly transmitted to the pipeline, and protect the pipeline from damage. At the same time, the second spring 216 can also assist in restoring the sleeve 214 to its initial position, ensuring the repeatable positioning accuracy of the clamp after multiple uses.

[0034] Furthermore, the telescopic member 210 includes a telescopic rod 211 , one end of which is rotatably connected to the front and rear sides of the bottom of the arc-shaped support plate 209 , a positioning sleeve 212 is slidably connected to the surface of the telescopic rod 211 , and the bottom of the telescopic rod 211 is rotatably connected to the top of the sliding sleeve 214 .

[0035] Through the careful design of the telescopic member 210, the equipment successfully realizes adaptive adjustment of the height, angle and local deformation of the pipeline, which greatly improves the applicability of the clamp and the convenience of the welding operation.

[0036] Furthermore, a first spring 213 is fixedly connected between the telescopic rod 211 and the positioning sleeve 212 .

[0037] The first spring 213 is fixedly connected between the telescopic rod 211 and the positioning sleeve 212. When the telescopic rod 211 is in the process of extension and retraction, the first spring 213 can provide necessary elastic supporting force, so that the telescopic rod 211 can automatically reset after being stressed, thereby maintaining the stable clamping force and position of the clamp on the pipe.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamp for HVAC pipe welding, comprising an adjusting mechanism (1) and a clamping mechanism (2) arranged on the top thereof, wherein the adjusting mechanism (1) comprises a base (101), and is characterized in that: The clamping mechanism (2) comprises a movable seat (201), wherein the movable seat (201) is correspondingly arranged on the left and right sides of the top of the base (101), the top of the movable seat (201) is fixedly connected to a fixed plate (202), an opposite side of the fixed plate (202) is fixedly connected to an inflatable shell (203), an opposite side of the inflatable shell (203) is fixedly connected to a plurality of rubber suction heads (204), an opposite side of the fixed plate (202) is fixedly connected to an air pump (205), an air outlet end of the air pump (205) is fixedly connected to one side of the inflatable shell (203), and an air extraction pipe (206) is fixedly connected to an air extraction end of the air pump (205).

2. A HVAC pipe welding fixture according to claim 1, characterized in that: The base (101) has limit slots (102) on both front and rear sides of the top, and the movable seat (201) has limit blocks (207) fixedly connected to both front and rear sides of the bottom, the limit blocks (207) are slidably connected to the limit slots (102), and an installation slot (208) is provided on the opposite side of the top of the movable seat (201).

3. A HVAC pipe welding fixture according to claim 2, characterized in that: A fixing frame (103) is fixedly connected to the left and right sides of the top of the base (101); a bidirectional threaded rod (104) is rotatably connected to the top of the fixing frame (103); a power motor (105) is fixedly connected to one end of the bidirectional threaded rod (104); the power motor (105) is fixedly connected to one side of the fixing frame (103); and a fixing plate (202) is threadedly connected to the left and right sides of the surface of the bidirectional threaded rod (104).

4. The HVAC pipe welding fixture according to claim 2, characterized in that: An arc-shaped support plate (209) is rotatably connected inside the mounting groove (208), a telescopic member (210) is rotatably connected at the front and rear sides of the bottom of the arc-shaped support plate (209), and a sliding sleeve (214) is rotatably connected at the bottom of the telescopic member (210).

5. The HVAC pipe welding fixture according to claim 4, characterized in that: The inner wall of the sliding sleeve (214) is slidably connected to a positioning rod (215), and the positioning rod (215) is fixedly connected to the inner wall of the installation groove (208). The front and rear sides of the surface of the positioning rod (215) are movable sleeves provided with a second spring (216) fixedly connected between the installation groove (208) and the sliding sleeve (214).

6. The HVAC pipe welding fixture according to claim 4, characterized in that: The telescopic member (210) comprises a telescopic rod (211), one end of the telescopic rod (211) is rotatably connected to the front and rear sides of the bottom of the arc-shaped support plate (209), a positioning sleeve (212) is slidably connected to the surface of the telescopic rod (211), and the bottom of the telescopic rod (211) is rotatably connected to the top of the sliding sleeve (214).

7. A HVAC pipe welding fixture according to claim 6, characterized in that: A first spring (213) is fixedly connected between the telescopic rod (211) and the positioning sleeve (212).

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