Stainless steel pipe welding equipment

Abstract

The present invention discloses a stainless steel pipe welding device, which relates to the field of welding technology. The present invention includes an operating panel, a fixed clamping seat and a dynamic clamping seat. An arc-shaped slide rail is provided on the operating panel, and the dynamic clamping seat is slidably installed through a slide rail block. The angle with the fixed clamping seat can be flexibly adjusted to adapt to the welding of pipes with inclined end faces. The equipment fixes the pipe through a clamping cover and a nut, which is easy to operate and has a damping feel. The sliding conductive block cooperates with the arc-shaped resistor bar, combined with the NPN transistor and the relay circuit to control the power supply of the electromagnet to achieve precise position locking. The dust cover design protects the slide rail and improves durability. The present invention overcomes the shortcomings of traditional clamps that are limited to coaxial clamping, inaccurate positioning, susceptible to dust and cumbersome operation, and realizes flexible angle adjustment and efficient operation, which is suitable for diversified welding needs.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to stainless steel pipeline welding equipment. Background Art

[0002] Traditional stainless steel pipe welding equipment mainly relies on fixed fixtures to position and clamp the pipes. Its original design intention was to ensure the coaxial arrangement of the two pipes to be welded. This equipment usually consists of a fixed clamping seat and a simple mechanical fixing structure. The pipes are clamped by bolts or pressure plates before welding. However, this traditional fixture has significant shortcomings in actual application. First, its clamping angle is fixed and can only achieve 180° coaxial alignment. This is not suitable for pipes with uneven end faces or pipes that need to be welded at an angle (such as special requirements with an angle of less than 180°). Traditional equipment relies entirely on manual adjustment and fixation, lacks precise positioning control, and the operator needs to repeatedly adjust the clamping position based on experience. It is easy for human errors to cause the pipe to shift, affecting the welding accuracy. Summary of the Invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a stainless steel pipe welding equipment, including an operating panel, an upper surface of the operating panel is provided with an arc-shaped slide rail arranged concentrically with the operating panel, a slide rail block is slidably installed in the arc-shaped slide rail, a dynamic clamping seat is fixedly installed on the slide rail block, a fixed clamping seat is provided on the side of the dynamic clamping seat, and the fixed clamping seat is fixedly installed on the operating panel. When the slide rail block is located in the middle position of the arc-shaped slide rail, the dynamic clamping seat and the fixed clamping seat are symmetrically arranged; the upper surface of the operating panel is also provided with a dust cover for rotational sealing, and the dust cover is overlapped above the arc-shaped slide rail, wherein the dust cover is fixedly matched with the dynamic clamping seat, and the dust cover is rotationally and slidingly matched with the fixed clamping seat.

[0004] Preferably, support legs are fixedly provided at the edge of the lower surface of the operating panel, an electromagnet fixing plate drag is fixedly installed overhead at the center of the lower surface of the operating panel, and a gap is provided between the electromagnet fixing plate drag and the operating panel.

[0005] Preferably, a limiting swing arm is rotatably installed at the center position of the circle under the operating panel, and the end of the limiting swing arm is movably connected to the slide block. A guide slide rod is also fixedly installed at the end of the limiting swing arm, and a sliding conductive block is provided on the outer surface sliding sleeve of the guide slide rod, and a ventilation hole is opened on the sliding conductive block.

[0006] Preferably, a spring is arranged around the guide slide rod, and both ends of the spring are fixedly matched with the limiting swing arm and the sliding conductive block. The side of the sliding conductive block away from the limiting swing arm is slidingly insulated and equipped with an insulating isolation block, and the insulating isolation block is fixedly mounted on the operating panel.

[0007] Preferably, a first arc-shaped resistor bar and a second arc-shaped resistor bar are fixedly installed on the lower surface of the operating panel, wherein the first arc-shaped resistor bar and the second arc-shaped resistor bar are arranged concentrically with the arc-shaped slide rail, and the opposite ends of the first arc-shaped resistor bar and the second arc-shaped resistor bar are fixedly matched with the insulating isolation block.

[0008] Preferably, the first arc-shaped resistor bar, the second arc-shaped resistor bar and the insulating isolation block form a semicircular shape, and the first arc-shaped resistor bar and the second arc-shaped resistor bar are slidably and conductively matched with the sliding conductive block.

[0009] Preferably, two pin holes are provided on the limiting swing arm, and an insert pin is slidably inserted into each pin hole. An electromagnet fixing plate is fixedly installed on the two insert pins, and two electromagnets are symmetrically fixedly installed on the side of the electromagnet fixing plate facing the operating panel. The two electromagnets are arranged on both sides of the limiting swing arm, wherein the electromagnet fixing plate is in contact and sliding cooperation with the electromagnet fixing plate drag plate, and the electromagnet fixing plate drag plate is used to limit the insertion pin from being separated from the pin hole, wherein the electromagnet is magnetically cooperated with the operating panel.

[0010] Preferably, two clamping cover plate guide screws are symmetrically fixedly installed on the fixed clamping seat and the dynamic clamping seat, and the two clamping cover plate guide screws are slidingly sleeved with a clamping cover plate. The two clamping covers and the fixed clamping seat and the dynamic clamping seat clamp the stainless steel pipes to be welded, and each clamping cover plate guide screw is threadedly sleeved with a nut that contacts and cooperates with the clamping cover plate.

[0011] Preferably, the ends of the first arc-shaped resistor bar and the second arc-shaped resistor bar away from the insulating isolation block are commonly connected to the negative pole of the 1.5V DC power supply, and 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 bottom 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 is connected in series with the fixed resistor R1 and the relay coil to the negative pole of the 12V DC power supply, wherein the normally open contact of the relay is used to control the power-on state of the electromagnet.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) By providing an arc-shaped slide rail and a dynamic clamping seat, the present invention enables the dynamic clamping seat to slide flexibly and adjust its position on the operating panel, forming different angles with the fixed clamping seat, and being able to adapt to the situation where the end face of the stainless steel pipe is uneven or tilted during welding. Compared with the limitation of traditional equipment that can only achieve coaxial clamping, the present equipment ensures that the welding requirements of less than 180° angles are met by manually adjusting the position of the dynamic clamping seat and combining the clamping cover plate to fix the pipe, thereby significantly improving the applicability and operational flexibility of the equipment; (2) The present invention utilizes the sliding cooperation between the sliding conductive block and the first and second arc-shaped resistor bars to control the energized state of the electromagnet by changing the resistance value in the circuit. When the dynamic clamping seat slides to the set position, the electromagnet is energized to generate magnetic force, forming a friction fixation with the operating panel, thereby locking the position of the limiting swing arm and the slide rail block. This combination of electronic control and mechanical positioning avoids the positioning deviation caused by inaccurate human operation in traditional manual clamps, ensuring the stability of pipe clamping during welding. (3) The dust cover provided on the operating panel of the present invention is fixedly matched with the dynamic clamping seat and rotates and slides with the fixed clamping seat, effectively covering the arc-shaped slide rail and key components, preventing dust or debris generated during welding from entering the interior 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 and reduces maintenance frequency and cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a structural diagram of the electromagnet fixing plate and the drag plate of the present invention.

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

[0016] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0017] Figure 5 This is a structural diagram of the sliding conductive block of the present invention.

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

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

[0020] The following is combined with Figures 1-6 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0021] The present invention provides a stainless steel pipe welding device, including an operating panel 101, wherein an arc-shaped slide rail 108 concentrically arranged with the operating panel 101 is provided on the upper surface of the operating panel 101, a slide rail block 117 is slidably installed in the arc-shaped slide rail 108, a dynamic clamping seat 116 is fixedly installed on the slide rail block 117, a fixed clamping seat 104 is provided on the side of the dynamic clamping seat 116, and the fixed clamping seat 104 is fixedly installed on the operating panel 101. When the slide rail block 117 is located in the middle of the arc-shaped slide rail 108, the dynamic clamping seat 116 and the fixed clamping seat 104 are symmetrically arranged; the upper surface of the operating panel 101 is also provided with a dust cover 102 for rotational sealing, and the dust cover 102 is overlapped above the arc-shaped slide rail 108, wherein the dust cover 102 is fixedly matched with the dynamic clamping seat 116, and the dust cover 102 is rotationally and slidingly matched with the fixed clamping seat 104. The edge of the lower surface of the operating panel 101 is fixedly provided with a support leg 103. The center of the lower surface of the operating panel 101 is fixedly installed with an electromagnet fixing plate drag plate 120. A gap is provided between the electromagnet fixing plate drag plate 120 and the operating panel 101. A limiting swing arm 111 is rotatably installed at the center of the circle of the lower surface of the operating panel 101. The end of the limiting swing arm 111 is movably connected to the slide block 117. The end of the limiting swing arm 111 is also fixedly installed with a guide slide 121. The outer surface of the guide slide 121 is slidably covered with a sliding conductive block 119. The sliding conductive block 119 is provided with a ventilation hole. A spring 122 is arranged around the guide slide 121. The two ends of the spring 122 are fixedly matched with the limiting swing arm 111 and the sliding conductive block 119. The side of the sliding conductive block 119 away from the limiting swing arm 111 is slidably insulated and provided with an insulating isolation block 118. The insulating isolation block 118 is fixedly installed on the operating panel 101. A symmetrically arranged first arc-shaped resistor bar 109 and second arc-shaped resistor bar 110 are fixedly mounted on the lower surface of the operating panel 101. The first arc-shaped resistor bar 109 and the second arc-shaped resistor bar 110 are arranged concentrically with the arc-shaped slide rail 108, and the opposing ends of the first arc-shaped resistor bar 109 and the second arc-shaped resistor bar 110 are fixedly engaged with an insulating isolation block 118. The first arc-shaped resistor bar 109, the second arc-shaped resistor bar 110, and the insulating isolation block 118 form a semicircular shape, and the first arc-shaped resistor bar 109 and the second arc-shaped resistor bar 110 slide and conduct with the sliding conductive block 119. Two pin holes 115 are provided on the limiting swing arm 111, and an insertion pin 114 is slidably inserted in 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 operating panel 101. The two electromagnets 113 are arranged on both sides of the limiting swing arm 111, wherein the electromagnet fixing plate 112 is in contact and sliding cooperation with the electromagnet fixing plate drag plate 120, and the electromagnet fixing plate drag plate 120 is used to limit the insertion pin 114 from separating from the pin hole 115, wherein the electromagnet 113 is magnetically cooperated with the operating panel 101.Two clamping cover plate guide screws 106 are symmetrically fixedly installed on the fixed clamping seat 104 and the dynamic clamping seat 116. The two clamping cover plate guide screws 106 are slidably sleeved with a clamping cover plate 105. The two clamping covers 105 and the fixed clamping seat 104 and the dynamic clamping seat 116 clamp the stainless steel pipes to be welded, and each clamping cover plate guide screw 106 is threadedly sleeved with a nut 107 that contacts and cooperates with the clamping cover plate 105. The ends of the first arc-shaped resistor bar 109 and the second arc-shaped resistor bar 110 away from the insulating isolation block 118 are commonly connected to the negative pole of the 1.5V DC power supply, and 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 bottom 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 is connected in series with the fixed resistor R1 and the relay coil to the negative pole of the 12V DC power supply, where the normally open contact of the relay is used to control the power-on state of the electromagnet 113.

[0022] The working principle of a stainless steel pipe welding device disclosed in the present invention is as follows: Traditional stainless steel pipe welding equipment needs to position and clamp the pipe during welding, but can only make the two welded clamped pipes coaxially arranged. If the welding end faces are not flush, for example, the end faces are tilted, so that the angle between the two pipes is less than 180 degrees, the traditional stainless steel pipe welding fixture cannot be adapted at this time. Therefore, the present invention can be used to achieve this. Specifically, according to the shape of the pipe welding end face, the position of the dynamic clamping seat 116 on the operating panel 101 is controlled so that the fixed clamping seat 104 and the dynamic clamping seat 116 are aligned. The relative position between them changes (just manually move the dynamic clamping seat 116. It should be noted that there is a damping feeling when the dynamic clamping seat 116 moves, which is for the purpose of easy operation). You only need to move the dynamic clamping seat 116 to the approximate position, and 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 dynamic clamping seat 116 respectively. At the beginning, the pipes cannot be completely clamped to the fixed clamping seat 104 and the dynamic clamping seat 116. You need to leave a little movement for easy adjustment. Then adjust the welding end face and rotate the nut 107 to securely fix the pipes at both ends. Then start welding. After welding is completed, rotate the nut 107 and remove the clamping cover 105.

[0023] During the movement of the dynamic clamping seat 116, the slide block 117 will follow the movement, and the slide block 117 will slide in the arc-shaped slide rail 108. At the same time, the slide block 117 drives the limiting swing arm 111 to rotate. At the same time, the limiting swing arm 111 will drive the sliding conductive block 119 to move synchronously through the guide slide rod 121. Then the sliding conductive block 119 slides on the first arc-shaped resistor bar 109, the insulating isolation block 118 and the second arc-shaped resistor bar 110, changing the position of the sliding conductive block 119 on the first arc-shaped resistor bar 109, the insulating isolation block 118 and the second arc-shaped resistor bar 110 (wherein the spring 122 is used to provide contact pressure of the sliding conductive block 119 on the insulating isolation block 118, the first arc-shaped resistor bar 109 and the second arc-shaped resistor bar 110). At the beginning, the dynamic clamping seat 116 is located in 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 dynamic clamping seat 116 starts to slide on the operating panel 101, the sliding conductive block 119 will contact the first arc-shaped resistor bar 109 or the second arc-shaped resistor bar 110 (depending on the sliding direction of the dynamic clamping seat 116). Then, the control circuit is energized (controlling the electromagnet 113, 1.5V and 12V power supplies). When the sliding conductive block 119 slides on the insulating isolation block 118 toward the first arc-shaped resistor bar 109 or the second arc-shaped resistor bar 110, the resistance value of the first arc-shaped resistor bar 109 or the second arc-shaped resistor bar 110 connected in series to the 1.5V DC circuit will decrease (because the sliding conductive block 119 moves in the direction away from the insulating isolation block 118). That is to say, at the beginning, the first arc-shaped resistor bar 109 or the second arc-shaped resistor bar 110 The resistance of the resistor bar 110 connected in series to the 1.5V DC circuit is the largest. At this time, the voltage across the variable resistor is the lowest (lower than 0.7V), and the base of the NPN transistor cannot be triggered. As the resistance of the first arc-shaped resistor bar 109 or the second arc-shaped resistor bar 110 connected in series to the 1.5V DC circuit gradually decreases (this process indicates the process of the dynamic clamping seat 116 sliding on the operating 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 of the variable resistor itself, it is possible to control the resistance value of the first arc-shaped resistor bar 109 or the second arc-shaped resistor bar 110 connected in series to the 1.5V DC circuit to reach a certain value, when the voltage across the variable resistor can reach 0.7V, that is, to determine the displacement of the dynamic clamping seat 116 sliding on the operating panel 101. The purpose of the variable resistor is to control the ratio of the resistance value of the variable resistor and the first arc-shaped resistor bar 109 or the second arc-shaped resistor bar 110 connected in series to the 1.5V DC circuit, that is, to control the angle at which the movable clamping seat 116 moves (the movable clamping seat 116 actually rotates on the operating panel 101) before the base of the NPN transistor can obtain a voltage of 0.7V.When the base of the NPN transistor reaches 0.7V, the collector and emitter of the NPN transistor are conducting, the relay coil is energized, and the normally open contacts of the relay are closed. At this time, the electromagnet 113 is energized, generating a magnetic force, which then attracts the operating panel 101, forming a frictional fixed relationship between the electromagnet 113 and the operating panel 101 (during this process, the electromagnet 113 drives the electromagnet fixing plate 112 to move, and the electromagnet fixing plate 112 drives the two insertion pins 114 to slide within the two pin holes 115). The electromagnet 113, the electromagnet fixing plate 112, the insertion pins 114, the pin holes 115, the limiting swing arm 111, and the operating panel 101 form a fixed relationship, and the slide block 117 on the limiting swing arm 111 will no longer be able to move within the arc-shaped slide rail 108, and the position of the dynamic clamping seat 116 is also determined. At this point, the stainless steel pipe can be welded. After welding is completed, the entire system can be powered off.

Claims

1. A stainless steel pipe welding device, characterized by: The invention comprises an operating panel (101), wherein the upper surface of the operating panel (101) is provided with an arc-shaped slide rail (108) arranged concentrically with the operating panel (101), a slide rail block (117) is slidably installed in the arc-shaped slide rail (108), a dynamic clamping seat (116) is fixedly installed on the slide rail block (117), a fixed clamping seat (104) is arranged on the side of the dynamic clamping seat (116), and the fixed clamping seat (104) is fixedly installed on the operating panel (101), and when the slide rail block (117) is located in the middle position of the arc-shaped slide rail (108), the dynamic clamping seat (116) and the fixed clamping seat (104) are symmetrically arranged; the center position of the lower surface of the operating panel (101) is overhead An electromagnet fixing plate drag plate (120) is fixedly installed; a limiting swing arm (111) is rotatably installed at the center position of the circle below the operating panel (101); the end of the limiting swing arm (111) is movably connected to the slide rail block (117); the end of the limiting swing arm (111) is also fixedly installed with a guide slide rod (121); the outer surface sliding sleeve of the guide slide rod (121) is provided with a sliding conductive block (119), and a vent hole is opened on the sliding conductive block (119); the side of the sliding conductive block (119) away from the limiting swing arm (111) is slidingly insulated and equipped with an insulating isolation block (118), and the insulating isolation block (118) is fixedly installed on the operating panel (101); A symmetrically arranged first arc-shaped resistor bar (109) and a second arc-shaped resistor bar (110) are fixedly mounted on the lower surface of the operating panel (101), wherein the first arc-shaped resistor bar (109) and the second arc-shaped resistor bar (110) are concentrically arranged with the arc-shaped slide rail (108), and opposite ends of the first arc-shaped resistor bar (109) and the second arc-shaped resistor bar (110) are fixedly matched with the insulating isolation block (118); one end of the first arc-shaped resistor bar (109) and the second arc-shaped resistor bar (110) away from the insulating isolation block (118) is commonly connected to the negative electrode of a 1.5V DC power supply, and the sliding conductive block (119) and the variable resistor are connected in series to the positive electrode of the 1.5V DC power supply; The upper surface of the operating panel (101) is also provided with a dust cover (102) in a rotary seal. The dust cover (102) is overlapped above the arc-shaped slide rail (108), wherein the dust cover (102) is fixedly matched with the dynamic clamping seat (116), and the dust cover (102) is rotationally and slidingly matched with the fixed clamping seat (104).

2. The stainless steel pipe welding equipment according to claim 1, characterized in that: A support leg (103) is fixedly provided at the edge of the lower surface of the operating panel (101), and a gap is provided between the electromagnet fixing plate drag plate (120) and the operating panel (101).

3. The stainless steel pipe welding equipment according to claim 2, characterized in that: A spring (122) is provided around the guide slide bar (121), and both ends of the spring (122) are fixedly matched with the limiting swing arm (111) and the sliding conductive block (119).

4. The stainless steel pipe welding equipment according to claim 3, characterized in that: The first arc-shaped resistor bar (109), the second arc-shaped resistor bar (110) and the insulating isolation block (118) form a semicircular shape, and the first arc-shaped resistor bar (109) and the second arc-shaped resistor bar (110) are slidably conductively matched with the sliding conductive block (119).

5. The stainless steel pipe welding equipment according to claim 4, characterized in that: Two pin holes (115) are provided on the limiting swing arm (111), and an insertion pin (114) is slidably inserted in 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 operating panel (101). The two electromagnets (113) are arranged on both sides of the limiting swing arm (111), wherein the electromagnet fixing plate (112) is in contact and sliding cooperation with the electromagnet fixing plate drag plate (120), and the electromagnet fixing plate drag plate (120) is used to limit the insertion pin (114) from being separated from the pin hole (115), wherein the electromagnet (113) is magnetically cooperated with the operating panel (101).

6. The stainless steel pipe welding equipment according to claim 5, characterized in that: Two clamping cover plate guide screws (106) are symmetrically fixedly installed on the fixed clamping seat (104) and the dynamic clamping seat (116), and the two clamping cover plate guide screws (106) are slidingly sleeved with a clamping cover plate (105). The two clamping cover plates (105) and the fixed clamping seat (104) and the dynamic clamping seat (116) clamp the stainless steel pipe to be welded, and each clamping cover plate guide screw (106) is threadedly sleeved with a nut (107) that contacts and cooperates with the clamping cover plate (105).

7. The stainless steel pipe welding equipment according to claim 6, characterized in that: 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 bottom potential point of the variable resistor; the collector of the NPN transistor is connected to the positive electrode of the 12V DC power supply, and the emitter of the NPN transistor is connected in series with the fixed resistor R1 and the relay coil to the negative electrode of the 12V DC power supply, wherein the normally open contact of the relay is used to control the power-on state of the electromagnet (113).

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