CN214921957U - A machine of shifting for welding tubular product - Google Patents

Abstract

The utility model provides a machine of shifting for welding tubular product relates to machining equipment technical field. The positioner for welding the pipe comprises a base and a fixing assembly. The bottom of base is provided with removes the wheel, and the upside sets firmly first extension board and second extension board. The base is provided with a bearing plate, two ends of the bearing plate are respectively connected with the first support plate and the second support plate in a rotating mode, and the bearing plate is provided with a rotary table. The fixing assembly comprises a positive and negative screw rod, a second driving piece, a first sliding block, a second sliding block, a first movable plate, a second movable plate, a first clamping arm and a second clamping arm. The first sliding block and the second sliding block can move along the positive and negative screw rods, the first movable plate is fixed on the first sliding block, the second movable plate is fixed on the second sliding block, the first connecting block is hinged to the left end of the first clamping arm, and the second connecting block is hinged to the left end of the second clamping arm. The positioner for welding the pipes is simple in structure and convenient to operate, and can clamp and fix pipes of various specifications and sizes.

Description

A machine of shifting for welding tubular product

Technical Field

The utility model belongs to the technical field of machining equipment technique and specifically relates to a machine of shifting for welding tubular product is related to.

Background

The positioner is a special welding auxiliary device and is suitable for welding deflection of rotary work so as to obtain an ideal processing position and welding speed. The positioner can be used in combination with an operating machine and a welding machine to form an automatic welding center, and can also be used for workpiece deflection during manual operation.

When welding tubular product, current machine of shifting carries out the centre gripping through clamp class device to tubular product and fixes to firmly fix tubular product. However, the method has the problem that the pipe with various specifications and sizes is difficult to fix, so that the applicability of the existing positioner is low.

Disclosure of Invention

To the above situation, for overcoming prior art's defect, the utility model provides a machine of shifting for welding tubular product has solved current machine of shifting and when carrying out the centre gripping fixed to tubular product through clamp class device, has been difficult to fixed multiple specification, the tubular product of size, and makes the lower technical problem of suitability of current machine of shifting.

In order to achieve the above object, the utility model provides a following technical scheme:

a positioner for welding pipes mainly can include: base and fixed subassembly.

The base, its bottom is provided with removes the wheel, and the upside sets firmly first extension board and second extension board. The base is provided with a bearing plate, two ends of the bearing plate are respectively connected to the first support plate and the second support plate in a rotating mode, and the first support plate is provided with a first driving piece used for rotating the bearing plate. The bearing plate is provided with a rotary table which can rotate around the axis of the rotary table.

The fixing assembly comprises a positive and negative screw rod, a second driving piece, a first sliding block, a second sliding block, a first movable plate, a second movable plate, a first clamping arm and a second clamping arm. The positive and negative tooth lead screw is fixed in the center of revolving platform, and the second driving piece is used for rotating positive and negative tooth lead screw, and first slider and second slider homoenergetic are followed positive and negative tooth lead screw and are removed, and first fly leaf is fixed in first slider, and the second fly leaf is fixed in the second slider, has set firmly first connecting block on the first fly leaf, and first connecting block is articulated with the left end of first arm lock, has set firmly the second connecting block on the second fly leaf, and the second connecting block is articulated with the left end of second arm lock. The second clamping arm is provided with a notch for the first clamping arm to move, and the left part of the first clamping arm is rotatably connected in the notch. The right parts of the first clamping arm and the second clamping arm are both arc-shaped so as to conveniently clamp the pipe. A plurality of guide rods are fixed on the rotary table, and the first movable plate and the second movable plate are both sleeved on the guide rods.

The arrangement of the moving wheels, the bearing plate and the rotary table can flexibly adjust the position of the pipe, so that the operation of the welding robot is facilitated. The positive and negative tooth lead screw, the second driving piece, the first slider, the second slider, the first movable plate, the second movable plate, the first clamping arm and the second clamping arm are arranged, so that the positioner for welding the pipes can clamp and fix pipes of various specifications and sizes. The positioner for welding the pipes is simple in structure and convenient to operate, and can greatly improve the applicability of the positioner.

In some embodiments of the present invention, the second driving member includes a positive and negative motor, the output shaft of the positive and negative motor is connected to the speed reducer, the output shaft of the speed reducer is connected to the worm, the worm is engaged with the worm wheel, and the worm wheel is fixed to the lower portion of the positive and negative lead screw.

The utility model discloses an in some embodiments, be fixed with the dust cover that is used for protecting positive and negative motor on the above-mentioned revolving platform, seted up the louvre on the dust cover.

The dust cover and the heat dissipation holes are arranged, so that the positive and negative motors can be effectively prevented from dust, and good heat dissipation can be achieved for the positive and negative motors.

In some embodiments of the present invention, the bearing plate has a first rotating shaft and a second rotating shaft fixed to the left and right ends respectively, the first rotating shaft is rotatably connected to the first supporting plate, and the second rotating shaft is rotatably connected to the second supporting plate. The first driving piece comprises a variable frequency motor, a first transmission gear is fixed on an output shaft of the variable frequency motor and meshed with a second transmission gear, and the second transmission gear is fixed on a first rotating shaft. The fixing component rotates along the vertical direction through the positive rotation and the negative rotation of the variable frequency motor.

In some embodiments of the present invention, a limiting plate is radially fixed outside the right end of the second rotating shaft, and a stop block for limiting the rotation of the limiting plate is fixed on the right side of the second supporting plate. The dog runs through and is provided with a movable rod, and the upside of dog is seted up flutedly, and the top of movable rod sets firmly the clamp plate that can pass in and out the recess, and the cover is equipped with the pressure spring on the movable rod, and the one end of pressure spring is fixed in the clamp plate, and the bottom at the recess is fixed to the other end.

The setting of pressure spring can enough be when the bearing plate anticlockwise rotation makes limiting plate contact clamp plate, and the impact of buffering limiting plate to the clamp plate can store partly kinetic energy again, and this helps when the bearing plate clockwise turning, makes the bearing plate reset fast through the limiting plate.

The utility model discloses an in some embodiments, a holding tank has been seted up to the bottom of above-mentioned base, and the bottom of holding tank is fixed with hydraulic cylinder, and hydraulic cylinder's piston rod end is fixed with the mounting bracket, installs a plurality of wheels that remove on the mounting bracket.

The accommodating groove is arranged, so that the movable wheel can be conveniently accommodated when the positioner for welding the pipe does not need to be moved; when the positioner for welding the pipe needs to be moved, the moving wheel is pushed out from the containing groove.

In some embodiments of the present invention, two sliding grooves are disposed on the upper side of the base, and the two sliding grooves are respectively disposed on the front and rear sides of the bearing plate. All sliding connection has the slide in two spouts, is fixed with first telescopic cylinder on the slide, and first telescopic cylinder's piston rod end is fixed with the delivery sheet, and the upside of delivery sheet is fixed with and is curved backup pad, is fixed with on the lateral wall of spout to be used for making the slide along the gliding second telescopic cylinder of spout.

Be curved backup pad for the operator can arrange the tubular product that treats the welding in the backup pad, and the setting of first telescopic cylinder and second telescopic cylinder is convenient for send tubular product into between first arm lock and the second arm lock, in order to alleviate operator's intensity of labour.

The utility model discloses an in some embodiments, the bottom of above-mentioned spout has set firmly a plurality of transversal triangle-shaped's of personally submitting slide rail, and the bottom of slide is provided with a plurality of movable pulleys, offers the spread groove that matches with the slide rail on the movable pulley.

The sliding rail, the sliding wheel and the connecting groove are arranged, so that the sliding plate can move along the sliding rail conveniently.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

1. the arrangement of the moving wheels, the bearing plate and the rotary table can flexibly adjust the position of the pipe, so that the operation of the welding robot is facilitated. The positive and negative tooth lead screw, the second driving piece, the first slider, the second slider, the first movable plate, the second movable plate, the first clamping arm and the second clamping arm are arranged, so that the positioner for welding the pipes can clamp and fix pipes of various specifications and sizes. The positioner for welding the pipes is simple in structure and convenient to operate, and can greatly improve the applicability of the positioner.

2. The setting of pressure spring can enough be when the bearing plate anticlockwise rotation makes limiting plate contact clamp plate, and the impact of buffering limiting plate to the clamp plate can store partly kinetic energy again, and this helps when the bearing plate clockwise turning, makes the bearing plate reset fast through the limiting plate.

3. Be curved backup pad for the operator can arrange the tubular product that treats the welding in the backup pad, and the setting of first telescopic cylinder and second telescopic cylinder is convenient for send tubular product into between first arm lock and the second arm lock, in order to alleviate operator's intensity of labour.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a positioner for welding pipes according to this embodiment;

fig. 2 is a schematic structural view illustrating that the first clamping arm and the second clamping arm clamp the fixed pipe according to this embodiment;

FIG. 3 is a schematic structural diagram of the limiting plate and the stopper along the right side in FIG. 1;

fig. 4 is a schematic structural diagram of a first transmission gear and a second transmission gear provided in the present embodiment;

fig. 5 is a schematic structural diagram of a sliding wheel and a sliding rail provided in this embodiment.

Icon: 1-a position changing machine for welding pipes, 11-a base, 111-a moving wheel, 112-a first support plate, 113-a second support plate, 114-a bearing plate, 115-a first driving piece, 116-a rotary table, 117-a first rotating shaft, 118-a second rotating shaft, 119-a first transmission gear, 121-a second transmission gear, 123-a limiting plate, 124-a stop block, 125-a movable rod, 126-a groove, 127-a pressing plate, 128-a pressure spring, 129-an accommodating groove, 131-a hydraulic oil cylinder, 132-an installation frame, 134-a sliding chute, 135-a sliding plate, 136-a first telescopic cylinder, 137-a feeding plate, 138-a supporting plate, 139-a second telescopic cylinder, 141-a sliding rail, 142-a sliding wheel and 143-a connecting groove, 15-a fixed component, 151-a positive and negative tooth screw rod, 152-a second driving piece, 153-a first sliding block, 154-a second sliding block, 155-a first movable plate, 156-a second movable plate, 157-a first clamping arm, 158-a second clamping arm, 159-a first connecting block, 161-a second connecting block, 162-a speed reducer, 163-a worm, 164-a worm wheel and 17-a dust cover.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the embodiments of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features through another feature not in direct contact. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1 to 5, the embodiment provides a positioner 1 for welding a pipe, which mainly includes: a base 11 and a fixing assembly 15.

The base 11 has a moving wheel 111 at the bottom and a first support plate 112 and a second support plate 113 fixed at the top. The base 11 is provided with a bearing plate 114, two ends of the bearing plate 114 are respectively connected to the first supporting plate 112 and the second supporting plate 113 in a rotating manner, and the first supporting plate 112 is provided with a first driving member 115 for rotating the bearing plate 114. The bearing plate 114 is provided with a turntable 116, and the turntable 116 can rotate around the axis of the turntable 116.

The fixed assembly 15 includes a positive and negative screw 151, a second driving member 152, a first slider 153, a second slider 154, a first movable plate 155, a second movable plate 156, a first clamping arm 157 and a second clamping arm 158. The front and back threaded rods 151 have threads of opposite rotation directions symmetrically disposed at both ends. The positive and negative thread lead screw 151 is fixed at the center of the rotary table 116, the second driving member 152 is used for rotating the positive and negative thread lead screw 151, the first slider 153 and the second slider 154 can both move along the positive and negative thread lead screw 151, the first movable plate 155 is fixed on the first slider 153, the second movable plate 156 is fixed on the second slider 154, the first movable plate 155 is fixedly provided with a first connecting block 159, the first connecting block 159 is hinged with the left end of the first clamping arm 157, the second movable plate 156 is fixedly provided with a second connecting block 161, and the second connecting block 161 is hinged with the left end of the second clamping arm 158. The second clipping arm 158 is provided with a notch (not shown) for the first clipping arm 157 to move, and the left portion of the first clipping arm 157 is rotatably connected in the notch. The right parts of the first clamping arm 157 and the second clamping arm 158 are both arc-shaped so as to conveniently clamp the pipe. A plurality of guide rods are fixed on the turntable 116, and the first movable plate 155 and the second movable plate 156 are sleeved on the plurality of guide rods.

The arrangement of the moving wheel 111, the bearing plate 114 and the rotary table 116 can flexibly adjust the position of the pipe, so as to facilitate the operation of the welding robot. The positive and negative thread lead screw 151, the second driving member 152, the first slider 153, the second slider 154, the first movable plate 155, the second movable plate 156, the first clamping arm 157 and the second clamping arm 158 are arranged, so that the positioner 1 for welding pipes can clamp and fix pipes of various specifications and sizes. The positioner 1 for welding the pipes is simple in structure and convenient to operate, and can greatly improve the applicability of the positioner.

The second driving member 152 includes a positive and negative motor, an output shaft of the positive and negative motor is connected to a reducer 162, an output shaft of the reducer 162 is connected to a worm 163, the worm 163 is engaged with a worm wheel 164, and the worm wheel 164 is fixed to a lower portion of the positive and negative lead screw 151.

A dust cover 17 for protecting the forward and reverse motors is fixed on the rotary table 116, and a heat dissipation hole (not shown in the figure) is formed in the dust cover 17. The dust cover 17 and the heat dissipation holes are arranged, so that the positive and negative motors can be effectively prevented from dust, and good heat dissipation can be achieved for the positive and negative motors.

The left end and the right end of the bearing plate 114 are respectively and fixedly provided with a first rotating shaft 117 and a second rotating shaft 118, the first rotating shaft 117 is rotatably connected with the first support plate 112, and the second rotating shaft 118 is rotatably connected with the second support plate 113. The first driving member 115 comprises a variable frequency motor, a first transmission gear 119 is fixed on an output shaft of the variable frequency motor, the first transmission gear 119 is engaged with a second transmission gear 121, and the second transmission gear 121 is fixed on the first rotating shaft 117. The fixed component 15 is rotated in the vertical direction by the forward rotation and the reverse rotation of the variable frequency motor.

A limiting plate 123 is radially fixed on the outer side of the right end of the second rotating shaft 118, and a stop 124 for limiting the rotation of the limiting plate 123 is fixedly arranged on the right side of the second support plate 113. The stopper 124 is provided with a movable rod 125 in a penetrating manner, a groove 126 is formed in the upper side of the stopper 124, a pressing plate 127 capable of entering and exiting the groove 126 is fixedly arranged at the top of the movable rod 125, a pressing spring 128 is sleeved on the movable rod 125, one end of the pressing spring 128 is fixed to the pressing plate 127, and the other end of the pressing spring is fixed to the bottom of the groove 126. The compression spring 128 is configured to buffer the impact of the position-limiting plate 123 on the pressure plate 127 when the bearing plate 114 rotates counterclockwise (counterclockwise in fig. 3) so that the position-limiting plate 123 contacts the pressure plate 127, and to store a part of kinetic energy, which helps to quickly restore the bearing plate 114 through the position-limiting plate 123 when the bearing plate 114 rotates clockwise (clockwise in fig. 3).

An accommodating groove 129 is formed in the bottom of the base 11, a hydraulic oil cylinder 131 is fixed to the bottom of the accommodating groove 129, an installation frame 132 is fixed to a piston rod end of the hydraulic oil cylinder 131, and a plurality of moving wheels 111 are installed on the installation frame 132. The accommodating groove 129 is arranged to facilitate the accommodating of the moving wheel 111 when the positioner 1 for welding the pipe does not need to be moved; when the positioner 1 for welding a pipe needs to be moved, the moving wheel 111 is pushed out from the accommodating groove 129.

Two sliding grooves 134 are formed in the upper side of the base 11, and the two sliding grooves 134 are located on the front side and the rear side of the bearing plate 114 respectively. All sliding connection has slide 135 in two spout 134, is fixed with first telescopic cylinder 136 on the slide 135, and the piston rod end of first telescopic cylinder 136 is fixed with feed plate 137, and the upside of feed plate 137 is fixed with and is curved backup pad 138, is fixed with on the lateral wall of spout 134 to be used for making slide 135 along the gliding telescopic cylinder 139 of spout 134. The arc-shaped supporting plate 138 enables an operator to place a pipe to be welded on the supporting plate 138, and the arrangement of the first telescopic cylinder 136 and the second telescopic cylinder 139 facilitates the pipe to be fed between the first clamping arm 157 and the second clamping arm 158, so that the labor intensity of the operator is reduced.

The bottom of the sliding chute 134 is fixedly provided with a plurality of sliding rails 141 with triangular cross sections, the bottom of the sliding plate 135 is provided with a plurality of sliding wheels 142, and the sliding wheels 142 are provided with connecting grooves 143 matched with the sliding rails 141. The sliding rail 141, the sliding wheel 142 and the connecting slot 143 are provided to facilitate the movement of the sliding plate 135 along the sliding rail 141.

The working principle of the positioner 1 for welding the pipe is as follows:

when a pipe is fixed, the positive and negative screw 151 rotates in the forward direction, so that the first slider 153 and the second slider 154 are close to each other, and the right ends of the first clamping arm 157 and the second clamping arm 158 are far away from each other, so that the pipe can be conveniently placed between the first clamping arm 157 and the second clamping arm 158. After the pipes to be welded are placed on the two supporting plates 138, the pipes are moved upwards, the pipes are moved to the left between the first clamping arm 157 and the second clamping arm 158, the positive and negative screw 151 rotates reversely, the first sliding block 153 and the second sliding block 154 are far away from each other, and then the right ends of the first clamping arm 157 and the second clamping arm 158 are close to each other, so that the purpose of clamping the pipes with various specifications and sizes is achieved.

After the pipe is fixed, the position of the pipe is flexibly adjusted through the bearing plate 114 and the rotary table 116, so that the pipe can be conveniently welded. When the bearing plate 114 rotates counterclockwise, the limiting plate 123 pushes the pressing plate 127 downward, the pressing plate 127 compresses the pressing spring 128 to convert part of the kinetic energy of the limiting plate 123 into potential energy of the pressing spring 128, and after the bearing plate 114 rotates counterclockwise by 90 degrees, the bearing plate 114 rotates clockwise again to reset.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a machine of shifting for welding tubular product which characterized in that includes:

the bottom of the base is provided with a moving wheel, and the upper side of the base is fixedly provided with a first support plate and a second support plate; the base is provided with a bearing plate, two ends of the bearing plate are respectively and rotatably connected with the first support plate and the second support plate, and the first support plate is provided with a first driving piece for rotating the bearing plate; the bearing plate is provided with a rotary table which can rotate around the axis of the rotary table;

the fixing assembly comprises a positive and negative screw rod, a second driving piece, a first sliding block, a second sliding block, a first movable plate, a second movable plate, a first clamping arm and a second clamping arm; the positive and negative tooth lead screw is fixed at the center of the rotary table, the second driving piece is used for rotating the positive and negative tooth lead screw, the first sliding block and the second sliding block can move along the positive and negative tooth lead screw, the first movable plate is fixed on the first sliding block, the second movable plate is fixed on the second sliding block, a first connecting block is fixedly arranged on the first movable plate, the first connecting block is hinged with the left end of the first clamping arm, a second connecting block is fixedly arranged on the second movable plate, and the second connecting block is hinged with the left end of the second clamping arm; a notch which can be used for the first clamping arm to move is formed in the second clamping arm, and the left part of the first clamping arm is rotatably connected in the notch; the right parts of the first clamping arm and the second clamping arm are both arc-shaped, so that a pipe can be conveniently clamped; the rotary table is fixedly provided with a plurality of guide rods, and the first movable plate and the second movable plate are sleeved on the plurality of guide rods.

2. The positioner for welding pipes according to claim 1, wherein the second driving part comprises a positive and negative motor, an output shaft of the positive and negative motor is connected with a speed reducer in a transmission manner, an output shaft of the speed reducer is connected with a worm in a transmission manner, the worm is meshed with a worm wheel, and the worm wheel is fixed on the lower part of the positive and negative threaded screw.

3. The positioner for welding the pipes according to claim 2, wherein a dust cover for protecting the positive and negative motors is fixed on the rotary table, and the dust cover is provided with heat dissipation holes.

4. The positioner for welding the pipes according to claim 1, wherein a first rotating shaft and a second rotating shaft are fixedly arranged at the left end and the right end of the bearing plate respectively, the first rotating shaft is rotatably connected with the first supporting plate, and the second rotating shaft is rotatably connected with the second supporting plate; the first driving piece comprises a variable frequency motor, a first transmission gear is fixed on an output shaft of the variable frequency motor, a second transmission gear is meshed with the first transmission gear, and the second transmission gear is fixed on the first rotating shaft; the fixing assembly is enabled to rotate along the vertical direction through the forward rotation and the reverse rotation of the variable frequency motor.

5. The positioner for welding the pipes according to claim 4, wherein a limiting plate is radially fixed on the outer side of the right end of the second rotating shaft, and a stop block for limiting the rotation of the limiting plate is fixedly arranged on the right side of the second support plate; the dog runs through and is provided with a movable rod, the upside of dog is seted up flutedly, the top of movable rod sets firmly can pass in and out the clamp plate of recess, the cover is equipped with the pressure spring on the movable rod, the one end of pressure spring is fixed in the clamp plate, and the other end is fixed the bottom of recess.

6. The positioner for welding the pipes according to claim 1, wherein a containing groove is formed in the bottom of the base, a hydraulic oil cylinder is fixed to the bottom of the containing groove, a mounting frame is fixed to a piston rod end of the hydraulic oil cylinder, and a plurality of moving wheels are mounted on the mounting frame.

7. The positioner for welding the pipes according to any one of claims 1 to 6, wherein two sliding grooves are formed in the upper side of the base, and the two sliding grooves are respectively positioned on the front side and the rear side of the bearing plate; all sliding connections have the slide in two the spout, be fixed with first telescopic cylinder on the slide, the piston rod end of first telescopic cylinder is fixed with the delivery sheet, the upside of delivery sheet is fixed with and is the curved backup pad, be fixed with on the lateral wall of spout and be used for making the slide follows the gliding second telescopic cylinder of spout.

8. The positioner for welding the pipes according to claim 7, wherein a plurality of sliding rails with triangular cross sections are fixedly arranged at the bottom of the sliding groove, a plurality of sliding wheels are arranged at the bottom of the sliding plate, and connecting grooves matched with the sliding rails are formed in the sliding wheels.

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