An intelligent welding positioner and its usage method

Abstract

The present invention relates to the technical field of welding, and particularly relates to an intelligent welding positioner and a using method thereof. It includes: a support frame, a rotating base is rotatably connected to the support frame, a fixed disk is fixedly connected to the rotating base, a rotating disk is rotatably connected to the fixed disk, and a clamping member is installed on the rotating disk; a reciprocating telescopic rod, which is rotatably connected to the rotating base, a connecting frame is slidably connected to the telescopic part of the reciprocating telescopic rod, and a welding head is arranged on the connecting frame; a sliding rod, which is slidably connected to the fixed disk, a pressing disk is rotatably connected to the sliding rod, a sliding block is slidably connected to the pressing disk, and a clamping block is slidably connected to the sliding block. In the present invention, the L-shaped pipe is pressed by the pressing disk, so that the resultant force in the clamping direction is directed towards the weld at the inclined cut, and the L-shaped pipe is clamped to reduce the phenomenon of deviation of the L-shaped pipe caused by thermal stress, thereby reducing the probability of deformation or breakage of the weld of the L-shaped pipe during the rotating welding process.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and particularly relates to an intelligent welding positioner and its usage method. Background Art

[0002] A welding positioner is a device used to assist welding. Generally, when circumferentially welding a circular pipe, it is necessary to continuously rotate the circular pipe or the welding torch during the welding process. The main function of the welding positioner is to rotate and tilt the workpiece to be welded, so that the weld of the workpiece to be welded is always in the best welding position, thereby improving the welding quality and efficiency through intelligent devices and methods. During the process of pipeline welding, affected by the welding thermal stress, the pre-spot welding position at the pipeline weld is prone to deformation or even breakage.

[0003] Pipeline welding not only includes circumferential welding in the same plane, but also includes circumferential welding of inclined cuts on L-shaped circular pipes. The existing welding positioners only clamp one end of the pipeline during use. However, the center of gravity of the L-shaped pipeline itself is offset, and during the rotation welding process of the L-shaped pipeline, the center of gravity of the L-shaped pipeline is offset and the center of gravity position changes at all times. Therefore, the existing clamping method is not suitable for fixing the L-shaped pipeline, which will make the pre-spot welding position at the weld of the L-shaped pipeline more prone to deformation or even breakage, resulting in the inability of the welding positioner to achieve the due effect when welding the L-shaped pipeline, thereby affecting the efficiency of pipeline welding. Summary of the Invention

[0004] In order to overcome the drawbacks pointed out in the above background, the present invention provides an intelligent welding positioner and its usage method.

[0005] The technical solution of the present invention is as follows: An intelligent welding positioner, comprising:

[0006] A support frame, the support frame is rotatably connected to a rotating base, the rotating base is fixedly connected with a fixed disk, the fixed disk is rotatably connected to a rotating disk, the rotating disk is provided with a clamping member, the support frame is provided with a regulator for driving the rotation of the rotating base, and an external motor for driving the rotation of the rotating disk is installed inside the rotating base;

[0007] A reciprocating telescopic rod, rotatably connected to the rotating base, the telescopic part of the reciprocating telescopic rod is slidably connected with a connecting frame, and the connecting frame is provided with a welding head;

[0008] A transmission assembly, arranged on the rotating base, for driving the reciprocating telescopic rod to reciprocate and rotate;

[0009] The sliding rod is slidably connected to the fixed disk. A first elastic member is fixedly connected between the sliding rod and the fixed disk. The sliding rod is rotatably connected to a pressing disk. The pressing disk is slidably connected to a sliding block. A second elastic member is fixedly connected between the pressing disk and the sliding block. The sliding block is slidably connected to a clamping block. A third elastic member is fixedly connected between the sliding block and the clamping block.

[0010] More preferably, the pressing disk is provided with a hole, the diameter of the hole is larger than the diameter of the pipeline to be welded, and the axis of the hole is collinear with the axis of the rotating disk.

[0011] More preferably, a first limit pin is fixedly connected inside the fixed part of the reciprocating telescopic rod. Symmetrically distributed arc-shaped grooves are provided on the telescopic part of the reciprocating telescopic rod, and the arc-shaped grooves are used to limit the first limit pin.

[0012] More preferably, the transmission assembly includes:

[0013] A bevel gear is rotatably connected to the rotating base, and the bevel gear is coaxially connected with a frustum.

[0014] A disk is fixedly connected to the fixed part of the reciprocating telescopic rod, and the frustum is used to drive the disk.

[0015] More preferably, it further includes:

[0016] A transmission is installed on the rotating base. The input shaft of the transmission is driven by an external motor inside the rotating base. The output shaft of the transmission is fixedly connected with an incompletely conical pulley symmetrically distributed at the center. The incompletely conical pulley is used to drive the bevel gear.

[0017] A first hydraulic telescopic rod is fixedly connected to the rotating base, and the telescopic part of the first hydraulic telescopic rod is fixedly connected to the transmission shaft of the transmission.

[0018] More preferably, the angle covered by all the teeth of the incompletely conical pulley is A, and the contact angle between the incompletely conical pulley and the bevel gear is B, and A < 180° - B.

[0019] More preferably, it further includes:

[0020] A second hydraulic telescopic rod is fixedly connected to the rotating disk, and the telescopic part of the second hydraulic telescopic rod is fixedly connected to the clamping member.

[0021] A first housing is fixedly connected to the fixed disk. The first housing is hermetically and rotatably connected to a second housing communicated with its interior. The second hydraulic telescopic rod is communicated with the interior of the second housing through a first conduit. The first housing is communicated with the first hydraulic telescopic rod through a second conduit.

[0022] More preferably, it further includes: a rotating telescopic rod, rotatably connected to the fixed disk. The fixed part of the rotating telescopic rod is driven by a transmission member between the output shaft of an external motor. The telescopic part of the rotating telescopic rod is rotatably connected to the disk through a rotating ring. A second limit pin is fixedly connected inside the fixed part of the rotating telescopic rod, and an annular groove is provided on the telescopic part of the rotating telescopic rod for limiting the second limit pin.

[0023] More preferably, it further includes:

[0024] A third hydraulic telescopic rod, fixedly connected to the connecting frame. The welding head is slidably connected to the connecting frame. The telescopic part of the third hydraulic telescopic rod is fixedly connected to the welding head. The third hydraulic telescopic rod is communicated with the first housing through a third conduit.

[0025] A usage method of an intelligent welding positioner, based on the above-mentioned intelligent welding positioner, the specific steps are as follows:

[0026] Step 1: When it is necessary to use the device to weld an L-shaped pipe, clamp the L-shaped pipe through the clamping member, the sliding block and the clamping block, and adjust the position of the welding head to align the welding head with the weld of the L-shaped pipe;

[0027] Step 2: After the clamping member clamps the L-shaped pipe, according to the diameter of the L-shaped pipe, make the clamping member drive the telescopic part of the second hydraulic telescopic rod to move. The second hydraulic telescopic rod drives the telescopic part of the first hydraulic telescopic rod to move through hydraulic transmission. The telescopic part of the first hydraulic telescopic rod drives the transmission shaft of the transmission to move to adjust the transmission ratio of the transmission, and realizes the adjustment of the moving speed of the welding head through transmission;

[0028] Step 3: When the second hydraulic telescopic rod drives the telescopic part of the first hydraulic telescopic rod to move through hydraulic transmission, the second hydraulic telescopic rod synchronously drives the telescopic part of the third hydraulic telescopic rod to extend through hydraulic transmission and drives the welding head to move, so that the welding head fits tightly against L-shaped pipes with different diameters;

[0029] Step 4: Start the external motor. The external motor drives the rotating telescopic rod through a transmission member, so that the telescopic part of the rotating telescopic rod expands and contracts and drives the disk to move, and adjusts the transmission ratio between the frustum and the disk, so that the telescopic part of the reciprocating telescopic rod expands and contracts variably;

[0030] Step 5: After the external motor is turned on, the external motor drives the L-shaped pipe to rotate through the rotating disk. At the same time, the disk drives the reciprocating telescopic rod, and the telescopic part of the reciprocating telescopic rod drives the welding head to reciprocate through the connecting frame to weld the L-shaped pipe;

[0031] Step 6: After the L-shaped pipe is welded, turn off the power of the device, then remove and collect the welded L-shaped pipe, and finally clean the device for the next use.

[0032] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention presses the L-shaped pipe through the pressure plate, so that the resultant force in the clamping direction is directed towards the weld of the inclined cut, clamping the L-shaped pipe to reduce the phenomenon of the L-shaped pipe being offset due to thermal stress, thereby reducing the probability of deformation or breakage of the weld of the L-shaped pipe during the rotary welding process;

[0033] 2. By adjusting the telescopic speed of the telescopic part on the rotary telescopic rod, the welding head moves at a variable speed to adapt to the increase in the welding length caused by the upward offset of the pipe weld, thereby avoiding insufficient welding time caused by the increase in the welding length of the L-shaped pipe, and further preventing insufficient welding strength of the L-shaped pipe and affecting the welding quality of the L-shaped pipe;

[0034] 3. The telescopic part of the third hydraulic telescopic rod is moved through hydraulic transmission, and the telescopic part of the third hydraulic telescopic rod drives the welding head to move, changing the position of the welding head to adapt to the change of the welding point position of L-shaped pipes with different diameters, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0036] Figure 2 is a three-dimensional structural schematic diagram of the welding head of the present invention;

[0037] Figure 3 is a three-dimensional structural sectional view of the pressure plate of the present invention;

[0038] Figure 4 is a three-dimensional structural sectional view of the reciprocating telescopic rod of the present invention;

[0039] Figure 5 is an exploded three-dimensional structural diagram of the reciprocating telescopic rod of the present invention;

[0040] Figure 6 is a three-dimensional structural schematic diagram of the disc of the present invention;

[0041] Figure 7 is a three-dimensional structural schematic diagram of the incomplete cone pulley of the present invention;

[0042] Figure 8 is a three-dimensional structural sectional view of the first housing and the second housing of the present invention;

[0043] Figure 9 is a three-dimensional structural schematic diagram of the rotary telescopic rod of the present invention;

[0044] Figure 10 Exploded perspective view of the rotating telescopic rod of the present invention;

[0045] Figure 11 Schematic perspective view of the third hydraulic telescopic rod of the present invention;

[0046] Figure 12 Schematic perspective view of the welding head and the pipeline to be welded of the present invention.

[0047] Names and serial numbers of components in the figure: 1 - support frame, 11 - rotating base, 101 - fixed disk, 102 - rotating disk, 103 - clamping member, 104 - regulator, 2 - reciprocating telescopic rod, 201 - connecting frame, 202 - welding head, 203 - first limit pin, 204 - arc-shaped groove, 3 - transmission assembly, 301 - bevel gear, 302 - frustum, 303 - disk, 4 - sliding rod, 41 - pressing disk, 401 - sliding block, 402 - clamping block, 403 - hole, 501 - transmission, 502 - first hydraulic telescopic rod, 503 - incomplete cone pulley, 6 - second hydraulic telescopic rod, 601 - first housing, 602 - second housing, 7 - rotating telescopic rod, 701 - second limit pin, 702 - annular groove, 8 - third hydraulic telescopic rod. Detailed implementation mode

[0048] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention is further described below.

[0049] Example 1: As Figures 1 - 3 shown, the present invention provides an intelligent welding positioner, including: a support frame 1, a rotating base 11 is rotatably connected to the support frame 1, a fixed disk 101 is fixedly connected to the rotating base 11, a rotating disk 102 is rotatably connected to the fixed disk 101, a clamping member 103 is installed on the rotating disk 102, a regulator 104 is installed on the support frame 1, the regulator 104 is used to drive the rotation of the rotating base 11, and an external motor for driving the rotation of the rotating disk 102 is installed in the rotating base 11; a reciprocating telescopic rod 2, rotatably connected to the rotating base 11, a connecting frame 201 is slidably connected to the telescopic part of the reciprocating telescopic rod 2, and a welding head 202 is arranged on the connecting frame 201; a transmission assembly 3, arranged on the rotating base 11, for driving the reciprocating rotation of the reciprocating telescopic rod 2; a sliding rod 4, slidably connected to the fixed disk 101, a first elastic member is fixedly connected between the sliding rod 4 and the fixed disk 101, a pressing disk 41 is rotatably connected to the sliding rod 4, a sliding block 401 is slidably connected to the pressing disk 41, a second elastic member is fixedly connected between the pressing disk 41 and the sliding block 401, a clamping block 402 is slidably connected to the sliding block 401, a third elastic member is fixedly connected between the sliding block 401 and the clamping block 402, a hole 403 is arranged on the pressing disk 41, the diameter of the hole 403 is larger than the diameter of the pipeline to be welded, and the axis of the hole 403 is collinear with the axis of the rotating disk 102.

[0050] As Figure 4 shown in Figure 5 Fig. , a first limit pin 203 is fixedly connected inside the fixed part of the reciprocating telescopic rod 2, and symmetrically distributed arc-shaped grooves 204 are arranged inside the telescopic part of the reciprocating telescopic rod 2. The arc-shaped grooves 204 are used to limit the first limit pin 203.

[0051] As Figure 1 , Figure 6 shown in Figure 7 Fig. , the transmission assembly 3 includes: a bevel gear 301 rotatably connected to the rotating base 11, and a frustum 302 coaxially connected to the bevel gear 301; a disc 303 fixedly connected to the fixed part of the reciprocating telescopic rod 2, and the frustum 302 is used to drive the disc 303.

[0052] The purpose is to reduce the probability of deformation or even breakage at the weld of the L-shaped pipe. Specifically, the support frame 1 is provided with a control terminal not shown in the figure. The clamping member 103 is composed of a plurality of clamping blocks distributed circumferentially. The clamping blocks are electrically connected to the control terminal. The clamping blocks are controlled by the control terminal to slide for clamping and fixing the welded part. The regulator 104 is composed of a motor, a spur gear and a sector gear. The motor is electrically connected to the control terminal. The output shaft of the motor is fixedly connected to the spur gear. The sector gear is fixedly connected to the rotating base 11. The operator can control the output shaft of the motor to rotate and drive the spur gear to rotate through the control terminal, so that the sector gear rotates and drives the rotating base 11 to rotate, thereby adjusting the orientation of the upper surface of the rotating base 11 to facilitate the operator to operate the device. The operator can adjust the position of the welding head 202 by adjusting the position of the connecting frame 201 on the telescopic part of the reciprocating telescopic rod 2. In this embodiment, the welding head 202 is fixedly connected to the connecting frame 201. The external motor and the welding head 202 are both electrically connected to the control terminal. The arc-shaped grooves 204 are symmetrically distributed front and back. The telescopic part of the reciprocating telescopic rod 2 is initially in a contracted state. Through the front and back two arc-shaped grooves 204, no matter the rotating disc 102 rotates clockwise or counterclockwise, the telescopic part of the reciprocating telescopic rod 2 gradually extends after the rotating disc 102 starts to rotate, so as to be suitable for operators with different usage habits and increase the applicability of the device. The diameter of the frustum 302 gradually increases from top to bottom, so that the rotation speed of the disc 303 gradually increases when it moves downward. The first elastic member between the sliding rod 4 and the fixed disc 101 is a spring, the second elastic member between the pressing disc 41 and the sliding block 401 is a compression spring, and the third elastic member between the sliding block 401 and the clamping block 402 is a compression spring. The pressing disc 41 is made of a light material. The pressing disc 41 can be made of plastic material to reduce the resistance when the L-shaped pipe drives the pressing disc 41 to rotate through the sliding block 401 and the clamping block 402, so as to prevent the breakage of the spot welding part of the L-shaped pipe.

[0053] In this embodiment, the operator drives the bevel gear 301 to rotate through an external power source.

[0054] Specific working principle:

[0055] When the operator needs to use the device to weld the L-shaped pipe, the operator first pulls up the sliding rod 4 and the pressure plate 41, so that the first elastic member of the sliding rod 4 is compressed and contracted, and the L-shaped pipe that has been spot-welded in advance is fixed on the rotating disk 102 by the clamping member 103, and then the position of the connecting frame 201 is manually adjusted to align the welding head 202 with the pipe weld. The operator releases the sliding rod 4 and the pressure plate 41, and the first elastic member between the sliding rod 4 and the fixed disk 101 is stretched and driven to move, and the pressure plate 41 presses the L-shaped pipe, and the operator clamps the L-shaped pipe between the sliding block 401 and the clamping block 402 according to the size of the L-shaped pipe. The position of the sliding block 401 is adjusted so that the second elastic member between the pressure plate 41 and the sliding block 401 is compressed, and the third elastic member between the sliding block 401 and the clamping block 402 is compressed to accumulate force and clamp the inner wall of the pipe. The L-shaped pipe is pressed by the pressure plate 41 so that the resultant force in the clamping direction is toward the weld of the inclined incision, and the L-shaped pipe is clamped to reduce the phenomenon of the L-shaped pipe being offset due to thermal stress, thereby reducing the probability of the weld of the L-shaped pipe being deformed or broken during the rotational welding process, and the hole 403 is used to prevent the welding point of the L-shaped pipe from contacting the pressure plate 41 to prevent the welding head 202 from contacting and being affected by the pressure plate 41 during use.

[0056] After the L-shaped pipe is clamped, in this embodiment, the operator can drive the bevel gear 301 to rotate through an external power source, and the bevel gear 301 drives the round table 302 to rotate. The round table 302 drives the fixed part of the reciprocating telescopic rod 2 to rotate through the disc 303, and the fixed part of the reciprocating telescopic rod 2 drives the first limit pin 203 thereon to rotate, so that the first limit pin 203 moves along the adjacent arc groove 204, and the telescopic part of the reciprocating telescopic rod 2 gradually extends. When the rotating disk 102 starts to drive the L-shaped pipe on it to rotate, the reciprocating telescopic rod 2 The telescopic portion gradually extends out and drives the welding head 202 to move through the connecting frame 201, so that the welding head 202 moves along the inclined direction of the oblique incision of the L-shaped pipe, and welds the oblique incision of the L-shaped pipe as the L-shaped pipe rotates. After the rotating disk 102 drives the L-shaped pipe thereon to rotate 180°, the transmission assembly 3 drives the reciprocating telescopic rod 2 to rotate in the opposite direction, and the telescopic portion of the reciprocating telescopic rod 2 gradually contracts and drives the welding head 202 to move through the connecting frame 201, so that the welding head 202 completes the circumferential welding of the oblique incision of the L-shaped pipe.

[0057] When the L-shaped pipe is welded, the operator turns off the external motor and the external power source through the control terminal, then removes and collects the welded L-shaped pipe, and finally cleans the device for next use.

[0058] Example 2:Figures 6 - 9 As shown in the figure, the present invention further includes: a transmission 501 installed on a rotating base 11. The input shaft of the transmission 501 is driven by an external motor within the rotating base 11. The output shaft of the transmission 501 is fixedly connected with an incomplete cone pulley 503 symmetrically distributed in a central manner. The incomplete cone pulley 503 is used to drive a bevel gear 301; a first hydraulic telescopic rod 502 fixedly connected to the rotating base 11. The telescopic part of the first hydraulic telescopic rod 502 is fixedly connected to the speed-changing shaft of the transmission 501. The transmission 501 changes the meshing state of the internal gear set therein by the up-and-down sliding of its speed-changing shaft to achieve the speed-changing effect of the transmission 501. The angle covered by all the teeth of the incomplete cone pulley 503 is A, and the contact angle between the incomplete cone pulley 503 and the bevel gear 301 is B, where A < 180° - B.

[0059] As Figure 6 , Figure 8 and Figure 9 shown in the figure, it further includes: a second hydraulic telescopic rod 6 fixedly connected to the rotating disk 102. The telescopic part of the second hydraulic telescopic rod 6 is fixedly connected to a clamping member 103; a first housing 601 fixedly connected to the fixed disk 101. The first housing 601 is hermetically and rotationally connected to a second housing 602 communicating with its interior. The second hydraulic telescopic rod 6 is communicated with the interior of the second housing 602 through a first conduit. The first housing 601 is communicated with the first hydraulic telescopic rod 502 through a second conduit.

[0060] Aiming to adapt to the welding of L-shaped pipes of different sizes. Specifically, the two incomplete cone pulleys 503 rotate unidirectionally. When one incomplete cone pulley 503 meshes with the bevel gear 301, this incomplete cone pulley 503 drives the bevel gear 301 to rotate. When the other incomplete cone pulley 503 meshes with the bevel gear 301, this incomplete cone pulley 503 drives the bevel gear 301 to rotate in the opposite direction. The reciprocating rotation of the bevel gear 301 is controlled by the unidirectional rotation of the two incomplete cone pulleys 503. And after one incomplete cone pulley 503 starts to mesh with the bevel gear 301, every time the output shaft of the external motor rotates 180°, this incomplete cone pulley 503 loses meshing with the bevel gear 301. Since A < 180° - B, at this time both incomplete cone pulleys 503 lose meshing with the bevel gear 301 to prevent the incomplete cone pulley 503 from jamming with the bevel gear 301. The first conduit of the second hydraulic telescopic rod 6 and the second conduit of the first housing 601 are both made of hard materials. For example, the first conduit and the second conduit can be hard plastic pipes or metal pipes to reduce the probability of damage to the first conduit and the second conduit during the rotation of the rotating disk 102.

[0061] Specific working principle:

[0062] In this embodiment, when the output shaft of the external motor drives the rotating disc 102 to rotate, the external motor drives the bevel gear 301 through the transmission 501 and two incomplete cone pulleys 503 in sequence, and the bevel gear 301 drives the frustum 302 through the above steps.

[0063] When the diameter of the L-shaped pipe to be welded increases, the position of the clamping block of the clamping member 103 changes, causing the telescopic part of the second hydraulic telescopic rod 6 to contract. The hydraulic oil in the second hydraulic telescopic rod 6 is squeezed through its first conduit into the first housing 601 and the second housing 602. Then, the hydraulic oil in the first housing 601 is squeezed into the first hydraulic telescopic rod 502, causing the telescopic part of the first hydraulic telescopic rod 502 to extend. The telescopic part of the first hydraulic telescopic rod 502 drives the transmission shaft of the transmission 501 to move, reducing the transmission ratio of the transmission 501 and slowing down the rotation speed of the two incomplete cone pulleys 503. The incomplete cone pulleys 503 drive the reciprocating telescopic rod 2 to rotate through the bevel gear 301, the frustum 302, and the disc 303 in sequence through the above steps. The speed of the telescopic part of the reciprocating telescopic rod 2 driving the welding head 202 to move through the connecting frame 201 becomes slower, increasing the welding duration of the L-shaped pipe with a larger diameter to adapt to the welding distance of the large-diameter pipe, thereby increasing the applicability of the device.

[0064] Embodiment 3: As Figure 7 、 Figure 8 And Figure 12 As shown, the present invention further includes: a rotating telescopic rod 7, rotatably connected to the fixed disc 101. The fixed part of the rotating telescopic rod 7 is driven by a transmission member with the output shaft of the external motor. The telescopic part of the rotating telescopic rod 7 is rotatably connected to the disc 303 through a rotating ring. A second limit pin 701 is fixedly connected inside the fixed part of the rotating telescopic rod 7, and an annular groove 702 is provided on the telescopic part of the rotating telescopic rod 7 for limiting the second limit pin 701.

[0065] The aim is to make the welding degree evenly distributed at different positions of the oblique cut on the L-shaped pipe. Specifically, the transmission member between the fixed part of the rotating telescopic rod 7 and the output shaft of the external motor consists of two belt pulleys and a belt. The operator can adjust the transmission ratio of the transmission member by presetting the diameters of the two belt pulleys. When the output shaft of the external motor drives the rotating disc 102 to rotate, the output shaft of the external motor drives the rotating telescopic rod 7 to rotate through the transmission member, causing the rotating telescopic rod 7 to drive the second limit pin 701 to rotate. The second limit pin 701 moves along the annular groove 702, and the telescopic part of the rotating telescopic rod 7 reciprocates telescopically. The telescopic part of the rotating telescopic rod 7 first drives the disc 303 to move upward through the rotating ring. The disc 303 first moves upward along the frustum 302, and the rotation speed of the disc 303 gradually slows down to adapt to the upward offset of the weld of the L-shaped pipe, resulting in an increase in the welding length required per unit radian of the L-shaped pipe (i.e.,Figure 12 (the welding length shown in [the figure]), after the rotating disk 102 rotates 180°, the rotating telescopic rod 7 also rotates 180°. At this time, the telescopic part of the rotating telescopic rod 7 starts to drive the disk 303 to move downward through the rotating ring, so that the disk 303 moves downward along the frustum 302 and gradually accelerates to rotate, so that the disk 303 drives the reciprocating telescopic rod 2 to rotate at a variable speed. The reciprocating telescopic rod 2 drives the welding head 202 to expand and contract at a variable speed through the connecting frame 201 to adapt to the upward offset of the weld of the L-shaped pipe, resulting in an increase in the welding length required per unit radian of the L-shaped pipe, avoiding insufficient welding time at the longer welding distance of the L-shaped pipe, and further preventing insufficient welding strength at the longer welding distance of the L-shaped pipe, which affects the welding quality of the L-shaped pipe.

[0066] Example 4: As Figure 11 shown, the present invention further includes: a third hydraulic telescopic rod 8, fixedly connected to the connecting frame 201. The welding head 202 is slidably connected to the connecting frame 201. The telescopic part of the third hydraulic telescopic rod 8 is fixedly connected to the welding head 202. The third hydraulic telescopic rod 8 is communicated with the first housing 601 through a third conduit.

[0067] It is designed to adapt to the welding of L-shaped pipes with different diameters. Specifically, in the above embodiment, the welding head 202 is fixedly connected to the connecting frame 201. In this embodiment, the welding head 202 is slidably connected to the connecting frame 201. When the diameter of the L-shaped pipe to be welded changes, taking the increase in the diameter of the L-shaped pipe as an example, the position of the clamping block of the clamping member 103 changes, so that the telescopic part of the second hydraulic telescopic rod 6 contracts. The hydraulic oil in the second hydraulic telescopic rod 6 is squeezed through its first conduit into the first housing 601 and the second housing 602. The hydraulic oil in the first housing 601 is squeezed into the third hydraulic telescopic rod 8. The telescopic part of the third hydraulic telescopic rod 8 drives the welding head 202 to move to the right, changing the position of the welding head 202 to adapt to the change of the welding point position of L-shaped pipes with different diameters, thereby improving the applicability of the device.

[0068] Example 5: As Figures 1 - 12 shown, a method for using an intelligent welding positioner, based on the above-mentioned intelligent welding positioner, the specific steps are as follows:

[0069] Step 1: When it is necessary to use the device to weld the L-shaped pipe, clamp the L-shaped pipe through the clamping member 103, the sliding block 401 and the clamping block 402, and adjust the position of the welding head 202 to align the welding head 202 with the weld of the L-shaped pipe;

[0070] Step 2: After the clamping member 103 clamps the L-shaped pipe, according to the diameter of the L-shaped pipe, the clamping member 103 drives the telescopic part of the second hydraulic telescopic rod 6 to move. The second hydraulic telescopic rod 6 drives the telescopic part of the first hydraulic telescopic rod 502 to move through hydraulic transmission. The telescopic part of the first hydraulic telescopic rod 502 drives the transmission shaft of the transmission 501 to move, so as to adjust the transmission ratio of the transmission 501, and realize the adjustment of the moving speed of the welding head 202 through transmission;

[0071] Step 3: When the second hydraulic telescopic rod 6 drives the telescopic part of the first hydraulic telescopic rod 502 to move through hydraulic transmission, the second hydraulic telescopic rod 6 drives the telescopic part of the third hydraulic telescopic rod 8 to extend and drive the welding head 202 to move synchronously through hydraulic transmission, so that the welding head 202 is close to L-shaped pipes with different diameters;

[0072] Step 4: Start the external motor. The external motor drives the rotating telescopic rod 7 to rotate through the transmission member, so that the telescopic part of the rotating telescopic rod 7 extends and retracts and drives the disc 303 to move, and adjusts the transmission ratio between the frustum 302 and the disc 303, so that the telescopic part of the reciprocating telescopic rod 2 extends and retracts at a variable speed;

[0073] Step 5: After the external motor is started, the external motor drives the L-shaped pipe to rotate through the rotating disc 102. At the same time, the disc 303 drives the reciprocating telescopic rod 2. The telescopic part of the reciprocating telescopic rod 2 drives the welding head 202 to reciprocate through the connecting frame 201 to weld the L-shaped pipe;

[0074] Step 6: When the welding of the L-shaped pipe is completed, turn off the power supply of the device, then remove and collect the welded L-shaped pipe, and finally clean the device for the next use.

[0075] In summary, the above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent welding positioner, characterized in that: include: A support frame (1), the support frame (1) being rotatably connected to a rotating base (11), the rotating base (11) being fixedly connected to a fixed disk (101), the fixed disk (101) being rotatably connected to a rotating disk (102), the rotating disk (102) being provided with a clamping member (103), the support frame (1) being provided with an adjuster (104), the adjuster (104) being used to drive the rotating base (11) to rotate, and an external motor being provided inside the rotating base (11) for driving the rotating disk (102) to rotate; A reciprocating telescopic rod (2) is rotatably connected to the rotating base (11); the telescopic portion of the reciprocating telescopic rod (2) is slidably connected to a connecting frame (201); and the connecting frame (201) is provided with a welding head (202); A transmission assembly (3) is arranged on the rotating base (11) and is used to drive the reciprocating telescopic rod (2) to rotate reciprocatingly; A sliding rod (4) is slidably connected to the fixed plate (101), a first elastic member is fixedly connected between the sliding rod (4) and the fixed plate (101), the sliding rod (4) is rotatably connected to a pressure plate (41), the pressure plate (41) is slidably connected to a sliding block (401), a second elastic member is fixedly connected between the pressure plate (41) and the sliding block (401), the sliding block (401) is slidably connected to a clamping block (402), and a third elastic member is fixedly connected between the sliding block (401) and the clamping block (402); The transmission assembly (3) comprises: A bevel gear (301) is rotatably connected to the rotating base (11), and the bevel gear (301) is coaxially connected to a frustum (302); A circular disc (303) is fixedly connected to a fixed portion of the reciprocating telescopic rod (2), and the circular table (302) is used to drive the circular disc (303); Also includes: A transmission (501) is mounted on the rotating base (11); an input shaft of the transmission (501) is driven by an external motor in the rotating base (11); an output shaft of the transmission (501) is fixedly connected to an incomplete bevel gear (503) that is centrally symmetrically distributed; the incomplete bevel gear (503) is used to drive the bevel gear (301); A first hydraulic telescopic rod (502) is fixedly connected to the rotating base (11), and a telescopic portion of the first hydraulic telescopic rod (502) is fixedly connected to a transmission shaft of the transmission (501); Also includes: A second hydraulic telescopic rod (6) is fixedly connected to the rotating disk (102), and a telescopic portion of the second hydraulic telescopic rod (6) is fixedly connected to the clamping member (103); The first shell (601) is fixedly connected to the fixed plate (101); the first shell (601) is sealingly rotatably connected to a second shell (602) which is in communication with the interior thereof; the second hydraulic telescopic rod (6) is in communication with the interior of the second shell (602) via a first conduit; and the first shell (601) is in communication with the first hydraulic telescopic rod (502) via a second conduit.

2. The intelligent welding positioner according to claim 1, characterized in that: The pressure plate (41) is provided with a hole (403), the diameter of the hole (403) is larger than the diameter of the pipe to be welded, and the axis of the hole (403) is colinear with the axis of the rotating plate (102).

3. The intelligent welding positioner according to claim 2, characterized in that: A first limiting pin (203) is fixedly connected to the fixed portion of the reciprocating telescopic rod (2), and the telescopic portion of the reciprocating telescopic rod (2) is provided with symmetrically distributed arc grooves (204), and the arc grooves (204) are used to limit the first limiting pin (203).

4. The intelligent welding positioner according to claim 3, characterized in that: The angle covered by all teeth of the incomplete bevel wheel (503) is A, the contact angle between the incomplete bevel wheel (503) and the bevel gear (301) is B, and A<180°-B.

5. The intelligent welding positioner according to claim 4, characterized in that: Also includes: The rotating telescopic rod (7) is rotatably connected to the fixed disk (101); the fixed portion of the rotating telescopic rod (7) and the output shaft of the external motor are transmitted via a transmission member; the telescopic portion of the rotating telescopic rod (7) is rotatably connected to the disk (303) via a rotating ring; a second limiting pin (701) is fixedly connected to the fixed portion of the rotating telescopic rod (7); the telescopic portion of the rotating telescopic rod (7) is provided with an annular groove (702); the annular groove (702) is used to limit the second limiting pin (701).

6. The intelligent welding positioner according to claim 5, characterized in that: Also includes: A third hydraulic telescopic rod (8) is fixedly connected to the connecting frame (201), the welding head (202) is slidably connected to the connecting frame (201), the telescopic portion of the third hydraulic telescopic rod (8) is fixedly connected to the welding head (202), and the third hydraulic telescopic rod (8) is connected to the first housing (601) via a third conduit.

7. A method for using an intelligent welding positioner, characterized in that: According to the intelligent welding positioner of claim 6, the specific method of use is as follows: Step 1: When the device is required to be used to weld an L-shaped pipe, the L-shaped pipe is clamped by the clamping member (103), the sliding block (401) and the clamping block (402), and the position of the welding head (202) is adjusted so that the welding head (202) is aligned with the weld of the L-shaped pipe; Step 2: After the clamping member (103) clamps the L-shaped pipe, the clamping member (103) drives the telescopic portion of the second hydraulic telescopic rod (6) to move according to the diameter of the L-shaped pipe. The second hydraulic telescopic rod (6) drives the telescopic portion of the first hydraulic telescopic rod (502) to move through hydraulic transmission. The telescopic portion of the first hydraulic telescopic rod (502) drives the speed change shaft of the transmission (501) to move, so as to adjust the transmission ratio of the transmission (501). The movement speed of the welding head (202) is adjusted through transmission. Step 3: When the second hydraulic telescopic rod (6) moves the telescopic portion of the first hydraulic telescopic rod (502) through hydraulic transmission, the second hydraulic telescopic rod (6) synchronously extends the telescopic portion of the third hydraulic telescopic rod (8) through hydraulic transmission and drives the welding head (202) to move, so that the welding head (202) is closely attached to L-shaped pipes of different diameters; Step 4: starting the external motor, which drives the rotating telescopic rod (7) through the transmission member, so that the telescopic portion of the rotating telescopic rod (7) is extended and retracted and drives the disc (303) to move, and adjusting the transmission ratio between the round table (302) and the disc (303) so that the telescopic portion of the reciprocating telescopic rod (2) is retracted and retracted at a variable speed; Step 5: After the external motor is turned on, the external motor drives the L-shaped pipe to rotate through the rotating disk (102), and at the same time the disc (303) drives the reciprocating telescopic rod (2), and the telescopic portion of the reciprocating telescopic rod (2) drives the welding head (202) to move back and forth through the connecting frame (201), thereby welding the L-shaped pipe; Step 6: When the L-shaped pipe is welded, turn off the power of the device, then remove and collect the welded L-shaped pipe, and finally clean the device for the next use.

Images