Stainless steel pipeline welding equipment

Abstract

The invention discloses stainless steel pipeline welding equipment, and relates to the technical field of welding. The clamping device comprises an operation board, a fixed clamping seat and a movable clamping seat. An arc-shaped sliding rail is arranged on the operation board, the movable clamping base is installed in a sliding mode through a sliding rail block, and the included angle between the movable clamping base and the fixed clamping base can be flexibly adjusted to adapt to pipeline welding with the inclined end face. The pipeline is fixed through the clamping cover plate and the nut, operation is easy and convenient, and the damping feeling is achieved. The sliding conductive block is matched with the arc-shaped resistor strip, an NPN triode and a relay circuit are combined, the electromagnet is controlled to be powered on, and accurate locking of the position is achieved. The dustproof cover is designed to protect the sliding rail, and durability is improved. The welding fixture overcomes the defects that a traditional fixture only limits coaxial clamping, is inaccurate in positioning, is easily influenced by dust and is tedious in operation, realizes flexible angle adjustment and efficient operation, and is suitable for diversified welding requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a stainless steel pipe welding device. Background Art

[0002] Traditional stainless steel pipe welding devices mainly rely on fixed fixtures to position and clamp pipes. Their original design intention is to ensure the coaxial arrangement of two pipes to be welded. Such devices usually consist of fixed clamping seats and simple mechanical fixing structures, and the pipes are clamped by bolts or pressure plates for welding. However, such traditional fixtures have significant drawbacks in practical applications. Firstly, their clamping angles are fixed, and they can only achieve 180° coaxial alignment. For pipes with uneven end faces or those requiring inclined welding (such as special requirements with an included angle less than 180°), traditional devices rely entirely on manual adjustment and fixation, lacking precise positioning control. Operators need to repeatedly adjust the clamping position based on experience, which is prone to causing pipe offset due to human error and affecting welding accuracy. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: A stainless steel pipe welding device includes an operation panel. An arc-shaped slide rail concentric with the operation panel is provided on the upper surface of the operation panel. A slide rail block is slidably installed in the arc-shaped slide rail. A movable clamping seat is fixedly installed on the slide rail block. A fixed clamping seat is arranged on the side of the movable clamping seat, and the fixed clamping seat is fixedly installed on the operation panel. When the slide rail block is located at the middle position of the arc-shaped slide rail, the movable clamping seat and the fixed clamping seat are symmetrically arranged; A dust-proof cover is rotatably and sealedly arranged on the upper surface of the operation panel. The dust-proof cover overlaps above the arc-shaped slide rail, wherein the dust-proof cover is fixedly matched with the movable clamping seat and rotatably and slidably matched with the fixed clamping seat.

[0004] Preferably, support legs are fixedly matched at the edge position of the lower surface of the operation panel. An electromagnet fixing plate drag plate is fixedly installed in the air at the center position of the lower surface of the operation panel, and a gap is provided between the electromagnet fixing plate drag plate and the operation panel.

[0005] Preferably, a limiting swing arm is rotatably installed at the center position of the lower surface of the operation panel. The end of the limiting swing arm is movably connected to the slide rail block. A guiding slide rod is fixedly installed at the end of the limiting swing arm. A sliding conductive block is slidably sleeved on the outer surface of the guiding slide rod, and air holes are provided on the sliding conductive block.

[0006] Preferably, a spring is wound around the guiding slide rod. The two ends of the spring are fixedly matched with the limiting swing arm and the sliding conductive block. An insulating isolation block is slidably and insulatively matched on the side of the sliding conductive block away from the limiting swing arm, and the insulating isolation block is fixedly installed on the operation panel.

[0007] Preferably, a symmetrically arranged first arc-shaped resistance strip and a second arc-shaped resistance strip are fixedly installed on the lower surface of the operation panel. The first arc-shaped resistance strip and the second arc-shaped resistance strip are concentrically arranged with the arc-shaped slide rail, and the opposite ends of the first arc-shaped resistance strip and the second arc-shaped resistance strip are fixedly fitted with an insulating isolation block.

[0008] Preferably, the first arc-shaped resistance strip, the second arc-shaped resistance strip and the insulating isolation block form a semi-circular shape, and the first arc-shaped resistance strip and the second arc-shaped resistance strip are in sliding electrical contact with the sliding conductive block.

[0009] Preferably, two pin holes are formed in the limiting swing arm. An insertion pin is slidably inserted into each pin hole. An electromagnet fixing plate is fixedly installed on the two insertion pins. Two electromagnets are symmetrically and fixedly installed on one side of the electromagnet fixing plate facing the operation panel. The two electromagnets are arranged on both sides of the limiting swing arm. The electromagnet fixing plate is in sliding contact with the electromagnet fixing plate drag plate. The electromagnet fixing plate drag plate is used to prevent the insertion pin from separating from the pin hole. The electromagnet is in magnetic cooperation with the operation panel.

[0010] Preferably, two clamping cover guiding screws are symmetrically and fixedly installed on both the fixed clamping seat and the movable clamping seat. A clamping cover is slidably sleeved on the two clamping cover guiding screws. The two clamping covers, the fixed clamping seat and the movable clamping seat clamp the stainless steel pipe to be welded, and a nut in contact with the clamping cover is threadedly sleeved on each clamping cover guiding screw.

[0011] Preferably, the ends of the first arc-shaped resistance strip and the second arc-shaped resistance strip away from the insulating isolation block are jointly connected to the negative pole of a 1.5V DC power supply. The sliding conductive block and the variable resistor are connected in series to the positive pole of the 1.5V DC power supply; the high potential point of the variable resistor is electrically connected to the base of the NPN transistor, and the emitter of the NPN transistor is electrically connected to the low potential point of the variable resistor; the collector of the NPN transistor is connected to the positive pole of the 12V DC power supply, and the emitter of the NPN transistor, the fixed value resistor R1 and the relay coil are connected in series to the negative pole of the 12V DC power supply. The normally open contact of the relay is used to control the energization state of the electromagnet.

[0012] The present invention has the following beneficial effects compared with the prior art: (1) By providing an arc-shaped slide rail and a movable clamping seat, the movable clamping seat can slide flexibly on the operation panel and adjust its position, forming different angles with the fixed clamping seat, which can adapt to the situation of uneven or inclined end faces in the welding of stainless steel pipes. Compared with the limitation of traditional equipment that can only achieve coaxial clamping, this equipment manually adjusts the position of the movable clamping seat and combines with the clamping cover plate to fix the pipe, ensuring that the welding requirements with an angle less than 180° are met, significantly improving the applicability and operation flexibility of the equipment; (2) The present invention utilizes the sliding cooperation between the sliding conductive block and the first and second arc-shaped resistance strips to control the energized state of the electromagnet through the change of the resistance value in the circuit. When the movable clamping seat slides to the set position, the electromagnet is energized to generate magnetic force, forming friction fixation with the operation panel, thereby locking and restricting the positions of the swing arm and the slide rail block. This positioning method combining electronic control and machinery avoids the positioning deviation caused by inaccurate manual operation of traditional manual jigs, ensuring the stability of pipe clamping during the welding process; (3) The dust cover provided on the operation panel of the present invention is fixedly matched with the movable clamping seat and rotationally and slidably matched with the fixed clamping seat, effectively covering the arc-shaped slide rail and key components, preventing dust or debris generated during the welding process from entering the inside of the slide rail. This design not only protects the smooth operation of the sliding components, but also extends the service life of the equipment, reducing the maintenance frequency and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 is a schematic diagram of the structure at the drag plate of the electromagnet fixing plate of the present invention.

[0015] Figure 3 is a schematic diagram of the structure at the arc-shaped slide rail of the present invention.

[0016] Figure 4 is the present invention Figure 3 is a schematic diagram of the structure at position A in

[0017] Figure 5 is a schematic diagram of the structure at the sliding conductive block of the present invention.

[0018] Figure 6 is a control system diagram of the electromagnet of the present invention.

[0019] In the figure: 101 - operating panel; 102 - dust cover; 103 - support leg; 104 - fixed clamping seat; 105 - clamping cover plate; 106 - clamping cover plate guiding screw; 107 - nut; 108 - arc-shaped slide rail; 109 - first arc-shaped resistance bar; 110 - second arc-shaped resistance bar; 111 - limiting swing arm; 112 - electromagnet fixing plate; 113 - electromagnet; 114 - insertion pin; 115 - pin hole; 116 - movable clamping seat; 117 - slide rail block; 118 - insulating isolation block; 119 - sliding conductive block; 120 - electromagnet fixing plate drag plate; 121 - guiding slide bar; 122 - spring. Detailed implementation manners

[0020] The following combines the attached Figures 1-6 drawings, and further illustrates the technical solution of the present invention through specific implementation manners.

[0021] The present invention provides a stainless steel pipe welding device, which includes an operation panel 101. An arc-shaped slide rail 108 concentric with the operation panel 101 is provided on the upper surface of the operation panel 101. A slide rail block 117 is slidably installed in the arc-shaped slide rail 108. A movable clamping seat 116 is fixedly installed on the slide rail block 117. A fixed clamping seat 104 is arranged on the side of the movable clamping seat 116. The fixed clamping seat 104 is fixedly installed on the operation panel 101. When the slide rail block 117 is located at the middle position of the arc-shaped slide rail 108, the movable clamping seat 116 and the fixed clamping seat 104 are symmetrically arranged; a dust-proof cover 102 is rotatably and sealed on the upper surface of the operation panel 101. The dust-proof cover 102 overlaps above the arc-shaped slide rail 108. Among them, the dust-proof cover 102 is fixedly matched with the movable clamping seat 116, and the dust-proof cover 102 is rotatably and slidably matched with the fixed clamping seat 104. Support legs 103 are fixedly arranged at the edge position of the lower surface of the operation panel 101. An electromagnet fixing plate drag plate 120 is fixedly installed in the air at the center position of the lower surface of the operation panel 101. A gap is provided between the electromagnet fixing plate drag plate 120 and the operation panel 101. A limiting swing arm 111 is rotatably installed at the center of the lower surface of the operation panel 101. The end of the limiting swing arm 111 is movably connected to the slide rail block 117. A guiding slide rod 121 is fixedly installed at the end of the limiting swing arm 111. A sliding conductive block 119 is slidably sleeved on the outer surface of the guiding slide rod 121. Vent holes are provided on the sliding conductive block 119. A spring 122 is wound around the guiding slide rod 121. Both ends of the spring 122 are fixedly matched with the limiting swing arm 111 and the sliding conductive block 119. An insulating isolation block 118 is slidably and insulatively arranged on the side of the sliding conductive block 119 away from the limiting swing arm 111. The insulating isolation block 118 is fixedly installed on the operation panel 101. First arc-shaped resistance strips 109 and second arc-shaped resistance strips 110 are symmetrically fixedly installed on the lower surface of the operation panel 101. Among them, the first arc-shaped resistance strips 109 and the second arc-shaped resistance strips 110 are concentric with the arc-shaped slide rail 108. The opposite ends of the first arc-shaped resistance strips 109 and the second arc-shaped resistance strips 110 are fixedly matched with the insulating isolation block 118. The first arc-shaped resistance strips 109, the second arc-shaped resistance strips 110 and the insulating isolation block 118 form a semi-circular shape, and the first arc-shaped resistance strips 109 and the second arc-shaped resistance strips 110 are slidably and conductively matched with the sliding conductive block 119. Two pin holes 115 are provided on the limiting swing arm 111. Insertion pins 114 are slidably inserted into each pin hole 115. An electromagnet fixing plate 112 is fixedly installed on the two insertion pins 114. Two electromagnets 113 are symmetrically fixedly installed on the side of the electromagnet fixing plate 112 facing the operation panel 101. The two electromagnets 113 are arranged on both sides of the limiting swing arm 111. Among them, the electromagnet fixing plate 112 is in contact and sliding fit with the electromagnet fixing plate drag plate 120. The electromagnet fixing plate drag plate 120 is used to prevent the insertion pins 114 from separating from the pin holes 115. Among them, the electromagnets 113 are magnetically matched with the operation panel 101.On both the fixed clamping seat 104 and the movable clamping seat 116, two clamping cover guiding screws 106 are symmetrically and fixedly installed. A clamping cover 105 is slidably sleeved on the two clamping cover guiding screws 106. The two clamping covers 105, the fixed clamping seat 104 and the movable clamping seat 116 clamp the stainless steel pipe to be welded. And a nut 107 that is in contact and cooperation with the clamping cover 105 is threadedly sleeved on each clamping cover guiding screw 106. One end of the first arc-shaped resistance strip 109 and the second arc-shaped resistance strip 110 away from the insulating isolation block 118 are jointly connected to the negative pole of a 1.5V DC power supply. The sliding conductive block 119 and the variable resistor are connected in series to the positive pole of the 1.5V DC power supply; the high potential point of the variable resistor is electrically connected to the base of the NPN triode, and the emitter of the NPN triode is electrically connected to the low potential point of the variable resistor; the collector of the NPN triode is connected to the positive pole of a 12V DC power supply, and the emitter of the NPN triode, the fixed value resistor R1 and the relay coil are connected in series to the negative pole of the 12V DC power supply, wherein the normally open contact of the relay is used to control the energization state of the electromagnet 113.

[0022] The working principle of a stainless steel pipe welding device disclosed by the present invention is as follows: For traditional stainless steel pipe welding devices, during welding, it is necessary to position and clamp the pipes. However, it can only make the two welded and clamped pipes be coaxially arranged. If the welding end faces are not flush, for example, inclined end faces, resulting in an angle between the two pipes being less than 180°, at this time, traditional stainless steel pipe welding jigs cannot be adapted. Therefore, the present invention can be used to achieve this. Specifically, according to the shape of the pipe welding end face, control the position of the movable clamping seat 116 on the operation panel 101, so that the relative position between the fixed clamping seat 104 and the movable clamping seat 116 changes (simply manually move the movable clamping seat 116. It should be noted that there is a damping feeling when the movable clamping seat 116 moves, which is for easy operation). Only need to move the movable clamping seat 116 to an approximate position. Then use the nut 107 and the clamping cover 105 to clamp the two stainless steel pipes to the fixed clamping seat 104 and the movable clamping seat 116 respectively. At the beginning, the pipes cannot be completely clamped to the fixed clamping seat 104 and the movable clamping seat 116. A little play needs to be left for adjustment. Then adjust the welding end face, and then rotate the nut 107 to firmly fix the two ends of the pipe. Subsequently, welding can be started. After welding is completed, rotate the nut 107 to disassemble the clamping cover 105.

[0023] During the movement of the moving clamping seat 116, the slide rail block 117 will move accordingly. The slide rail block 117 slides within the arc-shaped slide rail 108. At the same time, the slide rail block 117 drives the limiting swing arm 111 to rotate. Meanwhile, the limiting swing arm 111 drives the sliding conductive block 119 to move synchronously through the guiding slide rod 121. Then, the sliding conductive block 119 slides on the first arc-shaped resistance strip 109, the insulating isolation block 118, and the second arc-shaped resistance strip 110, changing its position on the first arc-shaped resistance strip 109, the insulating isolation block 118, and the second arc-shaped resistance strip 110 (where the spring 122 is used to provide the contact pressure of the sliding conductive block 119 on the insulating isolation block 118, the first arc-shaped resistance strip 109, and the second arc-shaped resistance strip 110). Initially, the moving clamping seat 116 is located at the middle position of the arc-shaped slide rail 108, that is, the position where the sliding conductive block 119 contacts the insulating isolation block 118. When the moving clamping seat 116 starts to slide on the operation panel 101, the sliding conductive block 119 will contact the first arc-shaped resistance strip 109 or the second arc-shaped resistance strip 110 (depending on the sliding direction of the moving clamping seat 116), and then energize the control circuit (controlling the electromagnets 113, the 1.5V and 12V power supplies). When the sliding conductive block 119 slides on the insulating isolation block 118 towards the first arc-shaped resistance strip 109 or the second arc-shaped resistance strip 110, the resistance value of the first arc-shaped resistance strip 109 or the second arc-shaped resistance strip 110 connected in series to the 1.5V DC circuit will decrease (because the sliding conductive block 119 is moving away from the insulating isolation block 118). That is to say, initially, the resistance value of the first arc-shaped resistance strip 109 or the second arc-shaped resistance strip 110 connected in series to the 1.5V DC circuit is the largest, and at this time, the voltage divided across the variable resistor is the lowest (less than 0.7V). At this time, the base of the NPN transistor cannot be triggered. As the resistance value of the first arc-shaped resistance strip 109 or the second arc-shaped resistance strip 110 connected in series to the 1.5V DC circuit gradually decreases (this process indicates the sliding process of the moving clamping seat 116 on the operation panel 101), the voltage across the variable resistor gradually increases. When the voltage across the variable resistor reaches 0.7V, the base of the NPN transistor can be triggered. Therefore, by adjusting the resistance value of the variable resistor itself, it can be controlled at what value the resistance of the first arc-shaped resistance strip 109 or the second arc-shaped resistance strip 110 connected in series to the 1.5V DC circuit reaches, the voltage across the variable resistor can reach 0.7V, that is, to determine the displacement of the moving clamping seat 116 sliding on the operation panel 101. The purpose of the variable resistor is to control the ratio of the resistance value of the variable resistor connected in series with the first arc-shaped resistance strip 109 or the second arc-shaped resistance strip 110 to the 1.5V DC circuit, that is, to control how many degrees the moving clamping seat 116 moves (in fact, the moving clamping seat 116 rotates on the operation panel 101) before the base of the NPN transistor can obtain a 0.7V voltage.When the base of the NPN transistor reaches 0.7V, the collector and emitter of the NPN transistor conduct, and at this time, the relay coil is energized, and the normally open contact of the relay is attracted. At this time, the electromagnet 113 is energized. After the electromagnet 113 is energized, it generates a magnetic force and then attracts the operation panel 101, so that a friction-fixed relationship is formed between the electromagnet 113 and the operation panel 101 (in this process, the electromagnet 113 will drive the electromagnet fixing plate 112 to move, and the electromagnet fixing plate 112 drives the two insertion pins 114 to slide in the two pin holes 115). A fixed relationship will be formed between the electromagnet 113, the electromagnet fixing plate 112, the insertion pins 114, the pin holes 115, the limiting swing arm 111 and the operation panel 101, and the slide rail block 117 on the limiting swing arm 111 will no longer be able to move in the arc-shaped slide rail 108, and the position of the movable clamping seat 116 is also determined. At this time, the stainless steel pipe can be welded. After the welding is completed, the power supply of the whole can be cut off.

Claims

1. A stainless steel pipe welding device, characterized in that: It includes an operation panel (101). An arc-shaped slide rail (108) concentric with the operation panel (101) is provided on the upper surface of the operation panel (101). A slide rail block (117) is slidably installed in the arc-shaped slide rail (108). A movable clamping seat (116) is fixedly installed on the slide rail block (117). A fixed clamping seat (104) is arranged on the side of the movable clamping seat (116). The fixed clamping seat (104) is fixedly installed on the operation panel (101). When the slide rail block (117) is located at the middle position of the arc-shaped slide rail (108), the movable clamping seat (116) and the fixed clamping seat (104) are symmetrically arranged. A dust-proof cover (102) is also rotatably and sealingly arranged on the upper surface of the operation panel (101). The dust-proof cover (102) overlaps above the arc-shaped slide rail (108). Among them, the dust-proof cover (102) is fixedly matched with the movable clamping seat (116), and the dust-proof cover (102) is rotatably and slidably matched with the fixed clamping seat (104).

2. The stainless steel pipe welding equipment according to claim 1, characterized in that: Support legs (103) are fixedly arranged at the edge position of the lower surface of the operation panel (101). An electromagnet fixing plate drag plate (120) is fixedly installed in the air at the center position of the lower surface of the operation panel (101). A gap is provided between the electromagnet fixing plate drag plate (120) and the operation panel (101).

3. A stainless steel pipe welding device according to claim 2, characterized in that: A limiting swing arm (111) is rotatably installed at the center position of the lower surface of the operation panel (101). The end of the limiting swing arm (111) is movably connected to the slide rail block (117). A guiding slide rod (121) is also fixedly installed at the end of the limiting swing arm (111). A sliding conductive block (119) is slidably sleeved on the outer surface of the guiding slide rod (121). Vent holes are provided on the sliding conductive block (119).

4. A stainless steel pipe welding device according to claim 3, characterized in that: A spring (122) is wound around the guiding slide rod (121). The two ends of the spring (122) are fixedly matched with the limiting swing arm (111) and the sliding conductive block (119). An insulating isolation block (118) is slidably and insulatingly arranged on the side of the sliding conductive block (119) away from the limiting swing arm (111). The insulating isolation block (118) is fixedly installed on the operation panel (101).

5. The stainless steel pipe welding equipment according to claim 4, characterized in that: Symmetrically arranged first arc-shaped resistance strips (109) and second arc-shaped resistance strips (110) are fixedly installed on the lower surface of the operation panel (101). Among them, the first arc-shaped resistance strips (109) and the second arc-shaped resistance strips (110) are concentric with the arc-shaped slide rail (108). The opposite ends of the first arc-shaped resistance strips (109) and the second arc-shaped resistance strips (110) are fixedly matched with the insulating isolation block (118).

6. The stainless steel pipe welding equipment according to claim 5, characterized in that: The first arc-shaped resistance strips (109), the second arc-shaped resistance strips (110) and the insulating isolation block (118) form a semi-circular shape, and the first arc-shaped resistance strips (109) and the second arc-shaped resistance strips (110) are slidably and conductively matched with the sliding conductive block (119).

7. The stainless steel pipe welding equipment according to claim 6, characterized in that: Two pin holes (115) are provided on the limiting swing arm (111). An insertion pin (114) is slidably inserted into each pin hole (115). An electromagnet fixing plate (112) is fixedly installed on the two insertion pins (114). Two electromagnets (113) are symmetrically and fixedly installed on one side of the electromagnet fixing plate (112) facing the operation panel (101). The two electromagnets (113) are arranged on both sides of the limiting swing arm (111). The electromagnet fixing plate (112) is in sliding contact with the electromagnet fixing plate drag plate (120), and the electromagnet fixing plate drag plate (120) is used to prevent the insertion pin (114) from separating from the pin hole (115). The electromagnet (113) is magnetically coupled with the operation panel (101).

8. A stainless steel pipe welding device according to claim 7, characterized in that: Two clamping cover guiding screws (106) are symmetrically and fixedly installed on both the fixed clamping seat (104) and the movable clamping seat (116). A clamping cover (105) is slidably sleeved on the two clamping cover guiding screws (106). The two clamping covers (105), the fixed clamping seat (104), and the movable clamping seat (116) clamp the stainless steel pipe to be welded. A nut (107) in contact with the clamping cover (105) is threadedly sleeved on each clamping cover guiding screw (106).

9. The stainless steel pipe welding device according to claim 8, characterized in that: One end of the first arc-shaped resistance bar (109) and the second arc-shaped resistance bar (110) far from the insulating isolation block (118) are commonly connected to the negative pole of the 1.5V DC power supply. The sliding conductive block (119) and the variable resistor are connected in series to the positive pole of the 1.5V DC power supply; the high potential point of the variable resistor is electrically connected to the base of the NPN transistor, and the emitter of the NPN transistor is electrically connected to the low potential point of the variable resistor; the collector of the NPN transistor is connected to the positive pole of the 12V DC power supply, and the emitter of the NPN transistor, the fixed value resistor R1, and the relay coil are connected in series to the negative pole of the 12V DC power supply. The relay normally open contact is used to control the energization state of the electromagnet (113).

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