阅读说明：本技术 一种改进型五金加工装置及其使用方法 (Improved hardware machining device and using method thereof ) 是由 周厚荣 江潮 于 2021-08-29 设计创作，主要内容包括：一种改进型五金加工装置及其使用方法,属于五金加工技术领域。包括：旋转机构,连接于机械手的输出端,包括旋转电机、旋转盘；钢管固定机构,包括上、下钢管固定机构,上钢管固定机构与旋转盘转动连接；焊接机构,与旋转盘固接；法兰置放机构,采用管状结构,下钢管固定机构位于该管状结构内部；上、下钢管固定机构分别从钢管的上、下端对其固定,法兰套设于钢管外并位于法兰置放机构的上端面,机械手调整焊接机构至合适位置,驱动旋转盘带动焊接机构旋转,对钢管与法兰接触处进行焊接。本发明将焊接机构、钢管固定机构集成于机械手输出端,配合可周向运动的焊缝打磨机构,实现法兰与钢管焊接的自动化,提高了生产效率。(An improved hardware processing device and a use method thereof belong to the technical field of hardware processing. The method comprises the following steps: the rotating mechanism is connected to the output end of the manipulator and comprises a rotating motor and a rotating disk; the steel pipe fixing mechanism comprises an upper steel pipe fixing mechanism and a lower steel pipe fixing mechanism, and the upper steel pipe fixing mechanism is rotationally connected with the rotating disc; the welding mechanism is fixedly connected with the rotating disc; the flange placing mechanism adopts a tubular structure, and the lower steel pipe fixing mechanism is positioned in the tubular structure; the upper steel pipe fixing mechanism and the lower steel pipe fixing mechanism are fixed to the steel pipes from the upper end and the lower end of the steel pipes respectively, the flanges are sleeved outside the steel pipes and located on the upper end face of the flange placing mechanism, the welding mechanism is adjusted to a proper position by the manipulator, the rotating disc is driven to drive the welding mechanism to rotate, and the contact position of the steel pipes and the flanges is welded. According to the invention, the welding mechanism and the steel pipe fixing mechanism are integrated at the output end of the manipulator, and the welding seam polishing mechanism capable of moving circumferentially is matched, so that the automation of welding the flange and the steel pipe is realized, and the production efficiency is improved.)

1. The utility model provides an improved generation hardware processing device, characterized by includes:

the manipulator is used for adjusting the position of the whole device;

the rotating mechanism is connected to the output end of the manipulator and comprises a rotating motor and a rotating disk; the rotating motor is in driving connection with the rotating disc;

the steel pipe fixing mechanism comprises an upper steel pipe fixing mechanism and a lower steel pipe fixing mechanism, and the upper steel pipe fixing mechanism is rotationally connected with the rotating disc and is positioned above the lower steel pipe fixing mechanism;

the welding mechanism is fixedly connected with the rotating disc and is positioned on one side of the upper steel pipe fixing mechanism;

the flange placing mechanism adopts a tubular structure, and the lower steel pipe fixing mechanism is positioned in the tubular structure;

the upper steel pipe fixing mechanism and the lower steel pipe fixing mechanism are fixed to the steel pipes from the upper end and the lower end of the steel pipes respectively, the flanges are sleeved outside the steel pipes and located on the upper end face of the flange placing mechanism, the welding mechanism is adjusted to a proper position through a manipulator and works, and meanwhile, the rotating disc is driven to drive the welding mechanism to rotate, so that the contact positions of the steel pipes and the flanges are welded.

2. The improved hardware machining device of claim 1, wherein the welding mechanism comprises:

the outer side wall of the welding mechanism frame body is fixedly connected with a connecting rod which is horizontally arranged, and the end part of the connecting rod is sleeved and fixedly connected with the outer wall of the rotating disc through an annular hoop;

the welding gun lifting cylinder is arranged on the welding mechanism frame body, and the output shaft of the welding gun lifting cylinder faces downwards and is connected with the welding gun frame body;

and the rotating cylinder is arranged inside the welding gun frame body, and an output shaft of the rotating cylinder is connected with the fixing frame of the welding gun.

3. The improved hardware processing device as claimed in claim 1 or 2, wherein the upper steel pipe fixing mechanism comprises:

the upper fixed shell is rotationally connected with the rotating disc through a switching structure;

the upper jacking cylinder is fixed in the upper fixed shell, and the output shaft of the upper jacking cylinder faces downwards and is connected with the upper vertebral body structure;

the upper cone structure consists of a cylindrical block at the upper part and a round table at the lower part, wherein the round table is big at the upper part and small at the lower part; the cylindrical block and the inner wall of the upper fixed shell form up-down sliding fit through a sliding block and a track;

each upper fixing claw is composed of an upper working head and an upper sliding arm, one end of the upper sliding arm is of an inclined surface structure matched with the outer wall of the circular truncated cone, the other end of the upper sliding arm extends out of the upper fixing shell and is connected with the upper working head, and the upper sliding arm is in sliding fit with the side wall of the upper fixing shell.

4. The improved hardware machining device according to claim 3, wherein the lower steel pipe fixing mechanism comprises:

the lower fixed shell is fixedly connected to the base;

the lower jacking cylinder is fixed in the lower fixed shell, and the output shaft of the lower jacking cylinder faces upwards and is connected with the lower cone structure;

the lower cone structure consists of a cylindrical block at the lower part and a round platform with a small upper part and a large lower part at the upper part; the cylindrical block and the inner wall of the lower fixed shell form up-down sliding fit through a sliding block and a track;

and each lower fixed claw consists of a lower working head and a lower sliding movable arm, one end of each lower sliding movable arm is of an inclined surface structure matched with the outer wall of the corresponding circular truncated cone, the other end of each lower sliding movable arm extends out of the lower fixed shell and is connected with the lower working head, and the lower sliding movable arms are in sliding fit with the side walls of the lower fixed shell.

5. The improved hardware machining device as claimed in claim 4, wherein the switching structure is a connecting disc, a stepped hole formed by a large hole in the upper part and a small hole in the lower part is formed in the middle of the connecting disc, and the rotating disc is placed in the large hole in the upper part;

a driving shaft of the rotating motor extends into the stepped hole and is fixedly connected with the rotating disc positioned at the large hole and rotatably connected with the hole wall of the small hole respectively; the outer side wall of the rotating disc is rotatably connected with the wall of the large hole of the connecting disc, an annular groove is formed in the bottom of the rotating disc, an annular bulge matched with the step surface of the connecting disc is formed in the step surface of the connecting disc, and a gap is reserved between the annular groove and the annular bulge.

6. The improved hardware machining device of claim 5, further comprising a weld grinding mechanism comprising:

the flange placing mechanism is arranged on the inner side wall of the inverted T-shaped track, the synchronous belt is meshed with a synchronous belt wheel for transmission, the synchronous belt wheel is in driving connection with a driving motor, and the driving motor is arranged in a shell of the polishing mechanism;

the traveling mechanism comprises four bearing wheels and four guide wheels which are arranged at the bottom of a shell of the polishing mechanism; the four bearing wheels are symmetrically distributed pairwise and are respectively in rolling fit with the bottoms of the two sides of the inverted T-shaped track; the four guide wheels are symmetrically distributed pairwise, commonly clamp the side wall of the inverted T-shaped track and are in rolling fit with the side wall of the inverted T-shaped track;

the grinding driving motor is fixed on the grinding mechanism shell, and an output shaft of the grinding driving motor is connected with the grinding head.

7. The improved hardware machining device according to claim 6, wherein a layer plate and a displacement cylinder are arranged at the top of the grinding mechanism shell; the polishing device is characterized in that a mounting seat of the polishing driving motor is in sliding fit with the laminate, an output shaft of the displacement cylinder is connected with the mounting seat of the polishing driving motor, and the displacement cylinder drives the grinding head to be in contact with or far away from a welding seam.

8. An improved hardware processing device according to claim 7, wherein the upper end face of the flange plate placing mechanism is a stepped face.

9. The use method of the improved hardware machining device according to claim 8, characterized by comprising the following steps:

1) positioning

a. Sleeving the bottom end of the steel pipe to be welded outside a fixed shell of the lower steel pipe fixing mechanism;

b. the lower jacking cylinder drives the cylindrical block of the lower cone structure to move upwards, the corresponding round table moves upwards, the inclined plane structure at the end part of the lower sliding movable arm is matched with the inclined plane structure at the outer wall of the round table, so that the lower fixing claws move outwards, and the lower parts of the steel pipes are fixed by supporting the inner wall of the steel pipe together by the lower fixing claws;

c. sleeving the flange outside the steel pipe, and placing the flange on the upper end surface of the flange placement mechanism;

d. the upper steel pipe fixing mechanism is adjusted to be above the lower steel pipe fixing mechanism through a manipulator, the upper jacking air cylinder drives the cylindrical block of the upper cone structure to move downwards, the corresponding circular truncated cone structure moves downwards, the inclined plane structure at the end part of the upper sliding arm is matched with the inclined plane structure of the outer wall of the circular truncated cone, so that the upper fixing claws move outwards, the inner wall of the steel pipe is supported by the plurality of upper fixing claws together, and the upper part of the steel pipe is fixed;

2) welding of

a. Fine adjustment of the upper position and the lower position of the welding gun is carried out through a welding gun lifting cylinder, and the inclination angle of the welding gun is adjusted through a rotating cylinder, so that the welding gun corresponds to the welding position of the flange and the steel pipe;

b. the welding gun works, and meanwhile, the rotating motor works to drive the welding gun to move annularly and weld along the welding position of the flange and the steel pipe;

c. after welding, the welding gun is moved upwards to the top limit position through the welding gun lifting cylinder;

3) weld grinding

a. Because the mounting seat of the polishing driving motor is in sliding fit with the laminate, the output shaft of the displacement cylinder is connected with the mounting seat of the polishing driving motor, and the polishing head is driven by the displacement cylinder to be tangent and contacted with the welding seam;

b. the grinding driving motor works, meanwhile, the driving motor of the synchronous belt wheel works, and due to the arrangement of the synchronous belt, the meshing transmission of the synchronous belt wheel and the bearing wheel and the guide wheel, the grinding driving motor moves along the annular inverted T-shaped track, so that the grinding head grinds the annular welding line;

c. after the welding seam is polished, the displacement cylinder drives the polishing driving motor to be far away from the welding seam;

d. the corresponding cone structure is driven to reset through the upper jacking cylinder and the lower jacking cylinder, the constraint on the inner wall of the steel pipe is removed, and the steel pipe welded with the flange is taken down.

Technical Field

The invention relates to an improved hardware machining device and a using method thereof, and belongs to the technical field of hardware machining.

Background

At present, in the technical field of hardware processing, a flange is welded on the outer side wall of a steel pipe to form the steel pipe with the flange, the application scenes of the structure are very many, for example, the flange is welded on the outer side wall of the bottom of the steel pipe to form a flange upright post, and the flange upright post can be used as a guardrail on a road. However, the flange is welded to the outer side wall of the steel pipe, manual welding is still adopted at present, and the following problems mainly exist in the process:

1. the steel pipe cannot be well fixed, and the outer wall of the steel pipe is easy to damage by the conventional steel pipe fixing device;

2. the welding mechanism and the steel pipe fixing device cannot be integrated into a whole, the space occupancy rate is high, and the use is inconvenient;

3. when the welding line is polished, a good fixing device is not provided, and the use is inconvenient;

4. the work efficiency is low, wastes time and energy.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an improved hardware processing device and a using method thereof.

The technical scheme of the invention is as follows:

a first object of the present invention is to provide an improved hardware processing apparatus, comprising:

the manipulator is used for adjusting the position of the whole device;

the rotating mechanism is connected to the output end of the manipulator and comprises a rotating motor and a rotating disk; the rotating motor is in driving connection with the rotating disc;

the steel pipe fixing mechanism comprises an upper steel pipe fixing mechanism and a lower steel pipe fixing mechanism, and the upper steel pipe fixing mechanism is rotationally connected with the rotating disc and is positioned above the lower steel pipe fixing mechanism;

the welding mechanism is fixedly connected with the rotating disc and is positioned on one side of the upper steel pipe fixing mechanism;

the flange placing mechanism adopts a tubular structure, and the lower steel pipe fixing mechanism is positioned in the tubular structure;

the upper steel pipe fixing mechanism and the lower steel pipe fixing mechanism are fixed to the steel pipes from the upper end and the lower end of the steel pipes respectively, the flanges are sleeved outside the steel pipes and located on the upper end face of the flange placing mechanism, the welding mechanism is adjusted to a proper position through a manipulator and works, meanwhile, the rotating disc is driven to drive the welding mechanism to rotate (at the moment, the upper steel pipe fixing mechanism does not rotate along with the rotating disc), and the contact positions of the steel pipes and the flanges are welded.

Further, the welding mechanism includes:

the outer side wall of the welding mechanism frame body is fixedly connected with a connecting rod which is horizontally arranged, and the end part of the connecting rod is sleeved and fixedly connected with the outer wall of the rotating disc through an annular hoop;

the welding gun lifting cylinder is arranged on the welding mechanism frame body, and the output shaft of the welding gun lifting cylinder faces downwards and is connected with the welding gun frame body;

and the rotating cylinder is arranged inside the welding gun frame body, and an output shaft of the rotating cylinder is connected with the fixing frame of the welding gun.

By adopting the scheme, the welding mechanism can rotate along with the rotating disk, the circumferential displacement of the welding gun is realized, meanwhile, the welding gun lifting cylinder can realize fine adjustment of the upper position and the lower position of the welding gun, and the rotating cylinder can realize adjustment of the angular position of the welding gun.

Further, the upper steel pipe fixing mechanism comprises:

the upper fixed shell is rotationally connected with the rotating disc through a switching structure;

the upper jacking cylinder is fixed in the upper fixed shell, and the output shaft of the upper jacking cylinder faces downwards and is connected with the upper vertebral body structure;

the upper cone structure consists of a cylindrical block at the upper part and a round table at the lower part, wherein the round table is big at the upper part and small at the lower part; the cylindrical block and the inner wall of the upper fixed shell form up-down sliding fit through a sliding block and a track;

each upper fixing claw is composed of an upper working head and an upper sliding arm, one end of the upper sliding arm is of an inclined surface structure matched with the outer wall of the circular truncated cone, the other end of the upper sliding arm extends out of the upper fixing shell and is connected with the upper working head, and the upper sliding arm is in sliding fit with the side wall of the upper fixing shell.

By adopting the scheme, the cylindrical block is in sliding fit with the inner wall of the upper fixed shell through the sliding block and the track, so that the circular truncated cone can be prevented from rotating circumferentially and running smoothly up and down; the upper jacking cylinder drives the upper cone structure to move downwards, the inclined plane structure of the sliding arm is matched with the inclined plane of the circular truncated cone, the sliding arm can be driven to slide outwards, and the upper fixing claws are jointly unfolded outwards to support and fix the inner wall of the steel pipe; by adopting the steel pipe fixing mechanism, the outer wall of the steel pipe is not damaged.

Further, lower steel pipe fixed establishment includes:

the lower fixed shell is fixedly connected to the base;

the lower jacking cylinder is fixed in the lower fixed shell, and the output shaft of the lower jacking cylinder faces upwards and is connected with the lower cone structure;

the lower cone structure consists of a cylindrical block at the lower part and a round platform with a small upper part and a large lower part at the upper part; the cylindrical block and the inner wall of the lower fixed shell form up-down sliding fit through a sliding block and a track;

and each lower fixed claw consists of a lower working head and a lower sliding movable arm, one end of each lower sliding movable arm is of an inclined surface structure matched with the outer wall of the corresponding circular truncated cone, the other end of each lower sliding movable arm extends out of the lower fixed shell and is connected with the lower working head, and the lower sliding movable arms are in sliding fit with the side walls of the lower fixed shell.

By adopting the technical scheme, the principle is the same as that of the steel pipe fixing mechanism.

Further, the switching structure is a connecting disc, a step hole formed by a large hole in the upper part and a small hole in the lower part is formed in the middle of the switching structure, and the rotating disc is arranged in the large hole in the upper part;

a driving shaft of the rotating motor extends into the stepped hole and is fixedly connected with the rotating disc positioned at the large hole and rotatably connected with the hole wall of the small hole respectively; the outer side wall of the rotating disc is rotatably connected with the wall of the large hole of the connecting disc, an annular groove is formed in the bottom of the rotating disc, an annular bulge matched with the step surface of the connecting disc is formed in the step surface of the connecting disc, and a gap is reserved between the annular groove and the annular bulge.

By adopting the technical scheme, the rotating motor can be ensured to drive the rotating disc to rotate so as to drive the welding gun to rotate along the circumferential direction of the steel pipe, and meanwhile, the connecting disc does not rotate along with the rotating disc, namely, the upper steel pipe fixing mechanism fixedly connected with the connecting disc does not rotate; the annular groove and the annular bulge are arranged between the connecting disc and the rotating disc, so that dislocation between the connecting disc and the rotating disc can be prevented, a gap is reserved between the connecting disc and the rotating disc, and independent movement without interference can be guaranteed.

Further, the device still includes welding seam grinding machanism, includes:

the flange placing mechanism is arranged on the inner side wall of the inverted T-shaped track, the synchronous belt is meshed with a synchronous belt wheel for transmission, the synchronous belt wheel is in driving connection with a driving motor, and the driving motor is arranged in a shell of the polishing mechanism;

the traveling mechanism comprises four bearing wheels and four guide wheels which are arranged at the bottom of a shell of the polishing mechanism; the four bearing wheels are symmetrically distributed pairwise and are respectively in rolling fit with the bottoms of the two sides of the inverted T-shaped track; the four guide wheels are symmetrically distributed pairwise, commonly clamp the side wall of the inverted T-shaped track and are in rolling fit with the side wall of the inverted T-shaped track;

the grinding driving motor is fixed on the grinding mechanism shell, and an output shaft of the grinding driving motor is connected with the grinding head.

By adopting the technical scheme, the grinding mechanism can move along the circumferential direction of the welding line by the inverted T-shaped track, the synchronous belt wheel and the driving motor; the setting of bearing wheel, leading wheel for grinding machanism operation is more stable, smooth.

Furthermore, a laminate and a displacement cylinder are arranged at the top of the shell of the polishing mechanism; the polishing device is characterized in that a mounting seat of the polishing driving motor is in sliding fit with the laminate, an output shaft of the displacement cylinder is connected with the mounting seat of the polishing driving motor, and the displacement cylinder drives the grinding head to be in contact with or far away from a welding seam.

By adopting the technical scheme, when a steel pipe is fixed and a welding procedure is carried out, the grinding head is far away from a welding seam and does not interfere with a welding gun.

Furthermore, the upper end surface of the flange plate placing mechanism is a step surface. The flange is arranged on the step surface, and the step surface can limit and position the flange to a certain extent.

The invention aims to provide a use method of an improved hardware processing device, which is characterized by comprising the following steps:

1) positioning

a. Sleeving the bottom end of the steel pipe to be welded outside a fixed shell of the lower steel pipe fixing mechanism;

b. the lower jacking cylinder drives the cylindrical block of the lower cone structure to move upwards, the corresponding round table moves upwards, the inclined plane structure at the end part of the lower sliding movable arm is matched with the inclined plane structure at the outer wall of the round table, so that the lower fixing claws move outwards, and the lower parts of the steel pipes are fixed by supporting the inner wall of the steel pipe together by the lower fixing claws;

c. sleeving the flange outside the steel pipe, and placing the flange on the upper end surface of the flange placement mechanism;

d. the upper steel pipe fixing mechanism is adjusted to be above the lower steel pipe fixing mechanism through a manipulator, the upper jacking air cylinder drives the cylindrical block of the upper cone structure to move downwards, the corresponding circular truncated cone structure moves downwards, the inclined plane structure at the end part of the upper sliding arm is matched with the inclined plane structure of the outer wall of the circular truncated cone, so that the upper fixing claws move outwards, the inner wall of the steel pipe is supported by the plurality of upper fixing claws together, and the upper part of the steel pipe is fixed;

2) welding of

a. Fine adjustment of the upper position and the lower position of the welding gun is carried out through a welding gun lifting cylinder, and the inclination angle of the welding gun is adjusted through a rotating cylinder, so that the welding gun corresponds to the welding position of the flange and the steel pipe;

b. the welding gun works, and meanwhile, the rotating motor works to drive the welding gun to move annularly and weld along the welding position of the flange and the steel pipe;

c. after welding, the welding gun is moved upwards to the top limit position through the welding gun lifting cylinder;

3) weld grinding

a. Because the mounting seat of the polishing driving motor is in sliding fit with the laminate, the output shaft of the displacement cylinder is connected with the mounting seat of the polishing driving motor, and the polishing head is driven by the displacement cylinder to be tangent and contacted with the welding seam;

b. the grinding driving motor works, meanwhile, the driving motor of the synchronous belt wheel works, and due to the arrangement of the synchronous belt, the meshing transmission of the synchronous belt wheel and the bearing wheel and the guide wheel, the grinding driving motor moves along the annular inverted T-shaped track, so that the grinding head grinds the annular welding line;

c. after the welding seam is polished, the displacement cylinder drives the polishing driving motor to be far away from the welding seam;

d. the corresponding cone structure is driven to reset through the upper jacking cylinder and the lower jacking cylinder, the constraint on the inner wall of the steel pipe is removed, and the steel pipe welded with the flange is taken down.

The welding mechanism and the steel pipe fixing mechanism are integrated at the output end of the manipulator, and the welding mechanism and the steel pipe fixing mechanism are matched with the weld joint polishing mechanism capable of moving circumferentially, so that the automation of welding the flange and the steel pipe is realized, the welding mechanism can be used for preparing the flange upright post of the highway guardrail, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of a processing apparatus in example 1;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1;

FIG. 4 is a schematic view of the structure of a processing apparatus in example 4;

FIG. 5 is a schematic structural view of a weld grinding mechanism according to embodiment 4;

FIG. 6 is a schematic view showing the operation of the weld grinding mechanism in embodiment 5;

FIG. 7 is an enlarged view of a portion of FIG. 2;

in the figure: the welding device comprises a manipulator 1, a rotating motor 2, a rotating disk 3, a bevel gear 4, a driving shaft 5, an upper steel pipe fixing mechanism 6, a lower steel pipe fixing mechanism 7, a welding mechanism 8, a flange placing mechanism 9, a steel pipe 10, a flange 11, a rotating motor frame body 12, a connecting rod 13, an annular clamp 14, a welding gun lifting cylinder 15, a welding mechanism frame body 16, a welding gun frame body 17, a rotating cylinder 18, a welding gun 19, an upper fixing shell 20, an upper jacking cylinder 21, a cylindrical block 22, a circular table 23, a sliding block 24, a rail 25, an upper fixing claw 26, a lower fixing shell 27, a base 28, a lower jacking cylinder 29, a cylindrical block 30, a circular table 31, a lower fixing claw 32, a connecting disc 33, a bearing 34, a bearing 35, an annular bulge 36, a sliding cavity channel 37, a resetting cavity channel 38, a resetting spring 39, a stop block 40, a tray 41, a ball 42, a spring 43, a step surface 44, an inverted T-shaped rail 45, a synchronous belt 46, a synchronous pulley 47, a synchronous belt, The grinding machine comprises a driving motor 48, a bearing wheel 49, a guide wheel 50, a grinding driving motor 51, a grinding mechanism shell 52, a grinding head 53, a layer plate 54, a displacement cylinder 55, a box body 56, a poking block 57, a spring 58, a slide rail 59 and a mounting seat 60 of the grinding driving motor.

Detailed Description

Example 1

An improved hardware machining device, comprising:

the manipulator 1 is used for adjusting the position of the whole device and can adopt a five-axis manipulator;

the rotating mechanism is connected with the output end of the manipulator and comprises a rotating motor 2 and a rotating disk 3; the rotating motor is connected with a driving shaft 5 through a pair of bevel gears 4, the driving shaft is fixedly connected with the rotating disc, and the rotating motor is positioned in a rotating motor frame body 12.

The steel pipe fixing mechanism comprises an upper steel pipe fixing mechanism 6 and a lower steel pipe fixing mechanism 7, and the upper steel pipe fixing mechanism is rotatably connected with the rotating disc and is positioned above the lower steel pipe fixing mechanism;

the welding mechanism 8 is fixedly connected with the rotating disc and is positioned on one side of the upper steel pipe fixing mechanism;

the flange placing mechanism 9 is of a tubular structure, and the lower steel pipe fixing mechanism is positioned in the tubular structure; the flange placing mechanism selects a square pipe or a round pipe according to the outer contour of the flange, and selects a tubular structure with a corresponding height according to an actual welding point. The upper end surface of the flange plate placing mechanism is a step surface 44, the flange is placed on the step surface, and the step surface can limit and position the flange to a certain extent.

The upper steel pipe fixing mechanism and the lower steel pipe fixing mechanism are fixed to the steel pipes 10 from the upper end and the lower end of the steel pipes respectively, the flanges 11 are sleeved outside the steel pipes and are arranged on the upper end faces of the flange placing mechanisms, the welding mechanisms are adjusted to proper positions through the mechanical arms, the rotating disc is driven to drive the welding mechanisms to rotate, and the contact positions of the steel pipes and the flanges are welded.

Specifically, the method comprises the following steps:

1. the welding mechanism includes:

the welding mechanism comprises a welding mechanism frame body 12, wherein the outer side wall of the welding mechanism frame body is fixedly connected with a connecting rod 13 which is horizontally arranged, and the end part of the connecting rod is sleeved and fixedly connected with the outer wall of the rotating disc through an annular hoop 14; the welding mechanism can rotate along with the rotating disk, and circumferential displacement of the welding gun is achieved.

The welding gun lifting cylinder 15 is arranged on the welding mechanism frame body 16, and the output shaft of the welding gun lifting cylinder is downward and is connected with the welding gun frame body 17, so that the fine adjustment of the vertical position of a welding gun can be realized;

and the rotary cylinder 18 is arranged in the welding gun frame body, an output shaft of the rotary cylinder is connected with a fixing frame of the welding gun 19, and the rotary cylinder can realize the adjustment of the angle position of the welding gun.

2. Go up steel pipe fixed establishment includes:

the upper fixed shell 20 is rotationally connected with the rotating disc through a switching structure;

the upper jacking cylinder 21 is fixed in the upper fixed shell, and the output shaft of the upper jacking cylinder faces downwards and is connected with the upper vertebral body structure;

the upper cone structure is composed of a cylindrical block 22 at the upper part and a round table 23 with a large upper part and a small lower part at the lower part; the cylindrical block and the inner wall of the upper fixed shell form up-down sliding fit through the sliding block 24 and the track 25, so that the circular truncated cone can be prevented from rotating circumferentially and running up and down smoothly;

and each upper fixing claw 26 is composed of an upper working head and an upper sliding arm, one end of the upper sliding arm is of an inclined plane structure matched with the outer wall of the circular truncated cone, the other end of the upper sliding arm extends out of the upper fixing shell and is connected with the upper working head, and the upper sliding arm is in sliding fit with the side wall of the upper fixing shell.

The inclined surface structure of the sliding arm is matched with the inclined surface of the circular truncated cone, the sliding arm can be driven to slide outwards, and the upper fixing claws are jointly unfolded outwards to support and fix the inner wall of the steel pipe; by adopting the steel pipe fixing mechanism, the outer wall of the steel pipe is not damaged.

3. Lower steel pipe fixed establishment includes:

a lower stationary case 27 fixedly attached to the base 28;

the lower jacking cylinder 29 is fixed in the lower fixed shell, and the output shaft of the lower jacking cylinder faces upwards and is connected with the lower centrum structure;

the lower cone structure is composed of a cylindrical block 30 at the lower part and a round table 31 with a small upper part and a big lower part at the upper part; the cylindrical block and the inner wall of the lower fixed shell form up-down sliding fit through a sliding block and a track;

and each lower fixed claw 32 is composed of a lower working head and a lower sliding movable arm, one end of each lower sliding movable arm is of an inclined surface structure matched with the outer wall of the corresponding circular truncated cone, the other end of each lower sliding movable arm extends out of the lower fixed shell and is connected with the lower working head, and the lower sliding movable arms are in sliding fit with the side walls of the lower fixed shell.

4. The switching structure is a connecting disc 33

The middle part of the rotary disc is provided with a step hole consisting of a big hole at the upper part and a small hole at the lower part, and the rotary disc is arranged in the big hole at the upper part; a driving shaft of the rotating motor extends into the stepped hole, and is fixedly connected with the rotating disc positioned at the large hole and rotatably connected with the hole wall of the small hole through a bearing 34; the outer side wall of the rotating disc is rotatably connected with the large hole wall of the connecting disc through a bearing 35. Therefore, the rotating motor can drive the rotating disc to rotate to drive the welding gun to rotate along the circumferential direction of the steel pipe, and the connecting disc does not rotate along with the rotating disc, namely, the upper steel pipe fixing mechanism fixedly connected with the connecting disc does not rotate.

The bottom of the rotating disk is provided with an annular groove, the step surface of the connecting disk is provided with an annular bulge 36 matched with the step surface, the annular groove and the annular bulge are arranged between the connecting disk and the rotating disk, dislocation between the connecting disk and the rotating disk can be prevented, a gap is reserved between the connecting disk and the rotating disk, and independent movement without interference can be guaranteed.

Example 2

On the basis of embodiment 1, the upper or lower fixed claw of the device is provided with a reset structure, which comprises:

a sliding channel 37, which is positioned on the inner wall of the upper or lower fixed shell and is used for the corresponding sliding arm to pass through and slide;

the reset cavities 38 are arranged in pairs at the upper and lower sides of the corresponding sliding cavities, the reset cavities are internally provided with reset springs 39, and the reset cavities are provided with sliding chutes communicated with the sliding cavities for the sliding of the stop blocks;

the stoppers 40 appear in pairs, are fixed on the upper side and the lower side of the corresponding sliding arm, the circular truncated cone displaces, and under the action of external force, the stoppers of the sliding arm overcome the reset spring force to slide outwards along the sliding groove, and the fixed claws are spread to fix the steel pipe; if the circular truncated cone resets, the sliding arm also resets under the action of spring force, and the constraint on the steel pipe is removed.

Example 3

On the basis of embodiment 1 or 2, a tray 41 is fixedly connected to the tail part of the driving shaft, and is positioned at the bottom of the connecting disc; the upper surface of the tray is provided with a plurality of balls 42 which are distributed in an annular shape, the tray is provided with spring mounting holes at positions corresponding to the balls, springs 43 are arranged in the spring mounting holes, the balls are clamped at the hole openings of the spring mounting holes in a manner of overcoming spring force, and annular grooves matched with the balls are formed in the bottom of the connecting disc. But the setting of tray bearing connection pad improves the stability of device, and the setting of ball, spring and annular groove can make tray, connection pad mutually noninterfere, and rotary disk, connection pad, last steel pipe fixed establishment, welding mechanism support body, welder support body etc. can adopt light alloy material, alleviate the dead weight.

Example 4

On the basis of embodiment 1 or 2 or 3, the device further comprises a weld grinding structure comprising:

the inverted T-shaped track 45 is arranged outside the flange placement mechanism and forms an annular shape, a synchronous belt 46 is arranged on the inner side wall of the inverted T-shaped track, the synchronous belt is in meshing transmission with a synchronous belt wheel 47, and the synchronous belt wheel is in driving connection with a driving motor 48;

the traveling mechanism comprises four bearing wheels 49 and four guide wheels 50 which are arranged at the bottom of the grinding mechanism shell; the four bearing wheels are symmetrically distributed pairwise and are respectively in rolling fit with the bottoms of the two sides of the inverted T-shaped track; the four guide wheels are symmetrically distributed in pairs, jointly clamp the side wall of the inverted T-shaped track and are in rolling fit with the side wall of the inverted T-shaped track. The grinding mechanism can move along the circumferential direction of the welding line by the inverted T-shaped track, the synchronous belt wheel and the driving motor.

A grinding driving motor 51 fixed on the grinding mechanism shell 52, and the output shaft of the grinding driving motor is connected with a grinding head 53; the top of the shell of the polishing mechanism is provided with a laminate 54 and a displacement cylinder 55; the polishing device is characterized in that a mounting seat of the polishing driving motor is in sliding fit with the laminate, an output shaft of the displacement cylinder is connected with the mounting seat of the polishing driving motor, the displacement cylinder drives the grinding head to be in contact with or far away from a welding seam, and the grinding head is far away from the welding seam and does not interfere with a welding gun when a steel pipe is fixed and a welding procedure is performed.

Example 5

On the basis of embodiment 4, be equipped with buffer gear between grinding driving motor's mount pad and the plywood, buffer gear includes open-topped box 56, and grinding driving motor's mount pad 60 bottom is equipped with dials movable block 57, dial movable block and insert in the box, and set up spring 58 in the box of dialling movable block both sides respectively, the box lateral wall is equipped with slide rail 59 along its length direction, mount pad and slide rail sliding fit. If meet steel pipe excircle welding seam profile when irregular, the spring of stirring piece both sides guarantees that the bistrique can self-adaptively polish according to the excircle profile of welding seam (when bistrique self-adaptation was adjusted, the mount pad took place the displacement along slide rail 59), and when bistrique stop work, this structure also enabled the bistrique to reset fast.

Example 6

The use method of the improved hardware machining device comprises the following steps:

1) positioning

a. Sleeving the bottom end of the steel pipe 10 to be welded outside the lower fixing shell 27 of the lower steel pipe fixing mechanism 7;

b. the lower jacking cylinder 29 drives the cylindrical block 30 of the lower cone structure to move upwards, the corresponding circular truncated cone 31 moves upwards, and the inclined plane structure at the end part of the lower sliding movable arm is matched with the inclined plane structure of the outer wall of the circular truncated cone, so that the lower fixing claws 32 move outwards, and a plurality of lower fixing claws jointly support the inner wall of the steel pipe to fix the lower part of the steel pipe;

c. sleeving the flange 11 outside the steel pipe 10, and placing the flange on the upper end face of the flange placement mechanism 9 (if the upper end face is provided with the step face 44, the flange is placed in the step face);

d. the upper steel pipe fixing mechanism 6 is adjusted to be above the lower steel pipe fixing mechanism 7 through the manipulator 1, the upper jacking cylinder 21 drives the cylindrical block 22 of the upper cone structure to move downwards, the corresponding circular truncated cone 23 moves downwards, the upper fixing claws 26 move outwards due to the fact that the inclined plane structure of the end portion of the upper sliding arm is matched with the inclined plane structure of the outer wall of the circular truncated cone, and the upper portions of the steel pipes are fixed by the aid of the upper fixing claws which support the inner wall of the steel pipe together;

2) welding of

a. Fine adjustment of the up-down position of the welding gun 19 is carried out through the welding gun lifting cylinder 15, and the inclination angle of the welding gun is adjusted through the rotating cylinder 18, so that the welding gun corresponds to the welding position of the flange and the steel pipe;

b. the welding gun works, and meanwhile, the rotating motor 2 works to drive the welding gun to move circularly and weld along the welding position of the flange and the steel pipe;

c. after welding, the welding gun is moved upwards to the top limit position through the welding gun lifting cylinder;

3) weld grinding

a. Because the mounting seat 60 of the polishing driving motor is in sliding fit with the layer plate 54, the output shaft of the displacement cylinder 55 is connected with the mounting seat of the polishing driving motor, and the polishing head is driven by the displacement cylinder to be tangent and contacted with a welding seam;

b. the grinding driving motor works, meanwhile, the driving motor 48 of the synchronous pulley 47 works, and due to the arrangement of the synchronous belt, the synchronous pulley meshing transmission, the bearing wheel 49 and the guide wheel 50, the grinding driving motor moves along the annular inverted T-shaped track 45, so that the grinding head grinds the annular welding line;

c. after the welding seam is polished, the displacement cylinder drives the polishing driving motor to be far away from the welding seam;

d. the corresponding cone structure is driven to reset through the upper jacking cylinder and the lower jacking cylinder, the constraint on the inner wall of the steel pipe is removed, and the steel pipe welded with the flange is taken down.