CN112222863A

CN112222863A - Intelligent welding production line of compressor robot

Info

Publication number: CN112222863A
Application number: CN202011468972.5A
Authority: CN
Inventors: 谢传海; 钟吉民; 李周; 陈炳旭; 张东红; 王贤成; 胡康
Original assignee: Foshan City Shunde District Kaishuo Precision Mould Automatic Technology Co ltd
Current assignee: Foshan City Shunde District Kaishuo Precision Mould Automatic Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-01-15
Anticipated expiration: 2040-12-15
Also published as: CN112222863B

Abstract

The invention relates to the technical field of compressor shell manufacturing, in particular to an intelligent welding production line of a compressor robot, which comprises a workpiece conveying line, and a pipe cutting machine, a primary pipe expanding machine, a pipe fitting lathe, a height detecting machine, a pipe body side punching machine, a support intermediate frequency spot welding machine, a guide pipe intermediate frequency spot welding machine, a brazing machine, a secondary pipe expanding machine, a gas shielded welding machine and a rack lathe which are sequentially arranged along the conveying direction of the workpiece conveying line. The intelligent welding production line of the compressor robot has higher automation degree, is more intelligent and has higher efficiency; the production line is provided with stations meeting the processing requirements of different products and corresponding equipment, so that different products can be processed by the same production line, the production line is more practical, and the production cost is lower.

Description

Intelligent welding production line of compressor robot

Technical Field

The invention relates to the technical field of compressor shell manufacturing, in particular to an intelligent welding production line of a compressor robot.

Background

The compressor housing is an important support for the motor and some components in the compressor, and requires a cylinder with good roundness, cylindricity and inner diameter dimensions. The former work of punching a hole, expanding pipe, welding support frame, welding pipe is all accomplished by the manual work one by one processing, and this kind of processing mode has laggard behind fairly, and not only machining efficiency is low, and intensity of labour is big, and the processing cost is high, and degree of automation is low, because the pure manual operation that leans on in addition, consequently is difficult to guarantee processingquality, and the very easy goes out defective products, and the processing uniformity is poor. With the continuous development of science and technology, a punching and welding production line special for producing a compressor shell appears, but the automation degree is low, and a lot of work needs manual operation, so that the efficiency is influenced; moreover, the production line is incomplete, the workpieces need to be transported by manpower between stations, and the production line needs to be additionally arranged or adjusted in a large quantity for producing different types of products; therefore, the existing compressor robot intelligent welding production line is low in automation degree, the produced products are single, and the compressor robot intelligent welding production line is not practical enough in practical application.

Disclosure of Invention

The invention aims to provide an intelligent welding production line of a compressor robot, and aims to solve the technical problems that the automation degree of the intelligent welding production line of the compressor robot is low and the produced products are single in the prior art.

In order to achieve the purpose, the invention provides an intelligent welding production line of a compressor robot, which comprises a workpiece conveying line, and a pipe cutting machine, a primary pipe expanding machine, a pipe fitting lathe, a height detecting machine, a pipe fitting side punching machine, a bracket intermediate frequency spot welding machine, a guide pipe intermediate frequency spot welding machine, a brazing machine, a secondary pipe expanding machine, a gas shielded welding machine and a frame lathe which are sequentially arranged along the conveying direction of the workpiece conveying line;

the pipe cutting machine is used for cutting the long-strip pipe material to form a pipe body;

the primary pipe expander is used for performing primary pipe expansion on a pipe body;

the pipe fitting lathe is used for turning the two ends of the pipe body;

the height detector is used for detecting whether the height of the turned pipe body is qualified or not;

the pipe body side punching machine is used for punching the side wall of the pipe body qualified in height detection;

the bracket intermediate frequency spot welding machine is used for welding the bracket on the punched pipe body;

the guide pipe intermediate frequency spot welding machine is used for welding the guide pipe on the side wall of the pipe body;

the brazing machine is used for welding the guide pipe on the side wall of the pipe body;

the secondary pipe expander is used for carrying out secondary pipe expansion on the pipe body;

the gas shielded welding machine is used for welding the rack on the inner wall of the pipe body;

the frame lathe is used for turning the end face of the frame extending out of the pipe body.

The production line is provided with stations meeting the processing requirements of different products and corresponding equipment, so that different products can be processed by the same production line, the production line is more practical, and the production cost is lower.

Preferably, the pipe cutter comprises:

the cutting mechanism is used for cutting the pipe fitting;

the feeding mechanism is positioned on one side where the discharge end of the cutting mechanism is positioned, and a pipe fitting on the feeding mechanism is over against the discharge end of the cutting mechanism;

the feeding mechanism is positioned on one side of the feeding end of the cutting mechanism and is provided with a guide rod used for limiting the pipe fitting, and the guide rod enables the pipe fitting to be right opposite to the feeding end of the cutting mechanism;

and the limiting mechanism is positioned on one side where the discharge end of the cutting mechanism is positioned, and is used for limiting the pipe fitting extending out of the discharge end of the cutting mechanism.

The guide rod is arranged to ensure the stability of the pipe fitting in the cutting process; the coaxiality of the feeding mechanism, the cutting mechanism and the feeding mechanism is very high, the pipe fitting is more stable and more accurate in the feeding, feeding and cutting processes, the machining precision is higher, and the machining is more convenient.

Preferably, the cutting mechanism comprises:

the movable die is provided with a movable die cavity for the pipe fitting to penetrate through and is positioned on one side close to the discharge end of the cutting mechanism;

the fixed die is provided with a fixed die cavity communicated with the movable die cavity, and the fixed die and the movable die are attached and positioned on one side close to the feeding end of the cutting mechanism;

the movable mould can be attached and swung on the radial direction of the pipe fitting relative to the fixed mould.

The pipe fitting is cut by the aid of the dislocation of the movable die and the fixed die, cost is low, waste scraps are hardly generated in the cutting process, and cut cuts after cutting are smoother.

Preferably, the limiting mechanism comprises a mounting seat, an air cylinder, a connecting block and a stop rod; the mounting seat is mounted on the cutting mechanism through a connecting assembly; the cylinder is arranged on the mounting seat; the connecting block is arranged on the output end of the air cylinder and is hinged with the mounting seat; the stop rod is arranged on the connecting block and used for abutting against a pipe fitting extending out of the discharge end of the cutting mechanism.

The limiting mechanism is arranged, so that the length of the pipe fitting cut by the pipe cutting machine is more accurate, and the length of the cut pipe fitting is convenient to adjust; on the other hand, stop gear's structure not only conveniently supports the pipe fitting, but also does not influence the unloading after the pipe fitting cutting.

Preferably, the primary pipe expander comprises a feeding manipulator, an alignment positioning device and a pipe expanding device; the alignment positioning device is arranged on one side of the pipe expanding device, and the feeding manipulator is positioned above the alignment positioning device and the pipe expanding device.

Preferably, the height detection machine comprises a mounting frame, a detection positioning cylinder, a height detection plate, a measuring range cylinder and a position sensor; the measuring range cylinder and the plurality of detecting and positioning cylinders are arranged on the mounting frame; the height detection plate is arranged on the measuring range cylinder, and the measuring range cylinder can drive the height detection plate to lift; the position sensor is installed on the height detection plate, and the detection positioning cylinder is used for pushing the pipe body to align the position sensor.

Preferably, the pipe body side punching machine comprises a main body frame, a pipe body feeding positioning conveyor, a welding seam detection positioning mechanism, a horizontal feeding mechanism, a pre-forming convex hull and side punching small hole mechanism, a convex hull forming and side punching large hole mechanism, a three-hole side punching mechanism and a pipe body discharging conveyor;

the welding seam detection and positioning mechanism is arranged on the main body frame and used for detecting the position of a welding seam on the pipe body and rotationally positioning the pipe body, so that the rear punching mechanism can avoid the welding seam and avoid punching the welding seam to cause the pipe body to crack;

the horizontal feeding mechanism is arranged at the upper part of the main body frame and is used for conveying the pipe body;

the preforming convex hull and side punching small hole mechanism is arranged on the main body frame, is positioned below the horizontal feeding mechanism, and is used for preforming a primary convex hull on the outer side wall of the pipe body and punching a small hole on the primary convex hull;

the convex hull forming and side punching large hole mechanism is arranged on the main body frame and positioned below the horizontal feeding mechanism, and is used for forming the initial convex hull into a formed convex hull and punching the small hole into a large hole;

the three-hole side punching mechanism is arranged on the main body frame, is positioned below the horizontal feeding mechanism and is used for punching three holes on the outer side wall of the pipe body along the circumferential direction of the pipe body;

the pipe body feeding positioning conveyor is used for conveying the pipe body to the welding seam detection positioning mechanism; and the pipe body discharging conveyor is used for conveying the punched pipe body out.

Preferably, the conduit medium frequency spot welding machine comprises a conduit vibration feeding disc, a material grabbing mechanical arm and a resistance welding gun which are sequentially arranged, wherein the conduit vibration feeding disc is used for outputting a conduit inside the conduit vibration feeding disc, the material grabbing mechanical arm is used for inserting the conduit into a hole in the pipe body, and the resistance welding gun is used for welding the conduit and the pipe body.

Preferably, a spray cleaning and drying device is arranged between the pipe cutting machine and the primary pipe expanding machine, a spray cleaning and drying device is also arranged between the brazing machine and the secondary pipe expanding machine, and an ultrasonic cleaning and drying device is arranged at the rear end of the rack lathe.

Preferably, a feeding robot is arranged between the pipe cutting machine and the primary pipe expanding machine.

The intelligent welding production line of the compressor robot at least has the following beneficial effects: the automatic punching and welding production of the compressor shell is higher in automation degree, more intelligent and higher in efficiency through the pipe cutting machine, the primary pipe expanding machine, the pipe fitting lathe, the height detecting machine, the pipe body side punching machine, the bracket intermediate frequency spot welding machine, the guide pipe intermediate frequency spot welding machine, the brazing machine, the secondary pipe expanding machine, the gas shield welding machine and the rack lathe which are sequentially arranged in the conveying direction of the workpiece conveying line; on the other hand, the production line is provided with stations meeting the processing requirements of different products and corresponding equipment, so that the same production line can process different products, the production line is more practical, and the production cost is lower.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a top view of an intelligent welding production line of a compressor robot according to the present invention;

FIG. 2 is a schematic diagram of an axial structure of the pipe cutter of the present invention;

FIG. 3 is a schematic axial view of a pipe cutting mechanism of the pipe cutting machine of the present invention;

FIG. 4 is a schematic cross-sectional view of a pipe cutting mechanism of the pipe cutting machine of the present invention;

FIG. 5 is a schematic view of an assembly structure of a limiting mechanism and a cutting mechanism in the pipe cutting machine according to the present invention;

FIG. 6 is a schematic axial view of the limiting mechanism of the pipe cutting machine of the present invention with the connecting assembly removed;

FIG. 7 is a schematic axial view of a coupling assembly of the present invention;

FIG. 8 is a front view of a coupling assembly of the present invention;

FIG. 9 is a schematic structural view of the spray cleaning and drying apparatus of the present invention;

FIG. 10 is a schematic view of the height measuring machine of the present invention;

FIG. 11 is a schematic view of a catheter intermediate frequency spot welder of the present invention;

FIG. 12 is a schematic view of the structure of the brazing machine of the present invention;

fig. 13 is a schematic structural view of the primary pipe expander of the present invention;

FIG. 14 is an enlarged view of the structure at A in FIG. 13;

FIG. 15 is a front view of FIG. 13;

fig. 16 is a schematic structural view of an alignment positioning device of the primary pipe expander of the present invention;

FIG. 17 is a front view of FIG. 16;

fig. 18 is a schematic structural view of a pipe expanding device of the primary pipe expander of the present invention;

FIG. 19 is a top view of FIG. 18;

FIG. 20 is a side view of FIG. 18;

fig. 21 is a structural schematic view of an expanding die of the primary pipe expander of the present invention;

fig. 22 is a schematic structural view of an auxiliary pipe expanding mechanism of the primary pipe expander of the present invention;

FIG. 23 is a front view of FIG. 22;

FIG. 24 is a schematic illustration of the feed station robot of the primary pipe expander of the present invention;

FIG. 25 is a front view of FIG. 24;

fig. 26 is a schematic structural view of an alignment station robot of the primary pipe expander of the present invention;

FIG. 27 is a schematic structural view of a tube side punch of the present invention;

FIG. 28 is a front view of FIG. 27;

FIG. 29 is a side view of FIG. 27;

FIG. 30 is a schematic view of the structure of FIG. 27 with the hydraulic system, tube infeed positioning conveyor, electrical cabinet, base, and tube outfeed conveyor omitted;

FIG. 31 is a schematic view of the weld detecting and positioning mechanism of the tube side punching machine of the present invention;

FIG. 32 is a front view of FIG. 31;

FIG. 33 is a schematic cross-sectional view taken at A-A in FIG. 32;

FIG. 34 is a schematic structural view of the preformed convex hull and side punch aperture mechanism of the tube body side punch of the present invention;

FIG. 35 is a top view of FIG. 34;

FIG. 36 is a schematic cross-sectional view at B-B in FIG. 35;

FIG. 37 is an enlarged schematic view of the structure at B in FIG. 36;

FIG. 38 is a schematic structural view of a convex hull forming and side-punching large hole mechanism of the tube body side punching machine of the present invention;

FIG. 39 is a front view of FIG. 38;

FIG. 40 is a schematic cross-sectional view at C-C in FIG. 39;

FIG. 41 is an enlarged schematic view of FIG. 40 at C;

FIG. 42 is a schematic structural view of a three-hole side-punching mechanism of the tube side-punching machine of the present invention;

FIG. 43 is a front view of FIG. 42;

FIG. 44 is a schematic cross-sectional view taken at D-D in FIG. 43;

FIG. 45 is an enlarged schematic view of FIG. 44 at D;

FIG. 46 is an enlarged schematic view of FIG. 43 at E;

FIG. 47 is a top view of FIG. 42;

fig. 48 is an enlarged schematic view of fig. 47 at F.

In the drawings: 10-workpiece conveying line, 20-pipe cutting machine, 201-cutting mechanism, 2011-moving die, 20111-moving die cavity, 2012-fixed die, 20121-fixed die cavity, 2013-moving die core, 2014-fixed die core, 2015-hydraulic oil cylinder, 202-feeding mechanism, 203-feeding mechanism, 2031-guide rod, 204-limiting mechanism, 2041-mounting seat, 2042-air cylinder, 2043-connecting block, 2044-stop rod, 205-connecting assembly, 2051-transverse sliding block, 2052-screw rod nut, 2053-transverse screw rod, 2054-supporting block, 2055-vertical sliding block, 2056-vertical screw rod, 30-primary pipe expanding machine, 301-feeding mechanical arm, 3011-fixing frame and 3012-first horizontal movement servo motor, 3013-feeding station manipulator, 30131-first base, 301311-first lifting guide block, 30132-first lifting cylinder, 30133-first lifting seat, 301331-first guide shaft, 30134-first clamping cylinder, 3014-aligning station manipulator, 30141-second base, 301411-second lifting guide block, 30142-second lifting cylinder, 301421-second guide shaft, 30143-second lifting seat, 30144-second clamping cylinder, 301441-first left clamping jaw, 301442-first right clamping jaw, 3015-pipe expanding station manipulator, 3016-discharging station manipulator, 3017-first horizontal guide rail, 3018-pull rod, 302-aligning and positioning device, 3021-first fixing seat, 3022-aligning and lifting cylinder, 3023-rotating platform, 3024-aligning and positioning device, 3025-alignment rotating motor, 303-pipe expanding device, 3031-base, 30311-first pipe expanding workbench, 30312-second pipe expanding workbench, 3032-oil cylinder, 3033-auxiliary pipe expanding mechanism, 30331-pipe body rotating cylinder, 303311-pivot, 30332-rotating plate, 303321-sliding slot hole, 30333-pipe body rotating ring, 3034-pipe expanding die, 30341-pipe expanding base, 303411-pipe expanding abdicating cavity, 303412-through hole, 303413-shaft hole, 30342-conical mandrel, 303421-connector, 303422-limit guide groove, 303423-limit head, 30343-pipe expanding arc plate, 303431-guide inclined plate, 30344-upper elastic hoop, 30345-lower elastic hoop, 304-oil pressure system, 305-feeding conveying line, 3051-material blocking cylinder, feed cylinder, 3052-material detection sensor, 3053-tube body positioning mechanism, 30531-tube body positioning cylinder, 30532-left positioning claw, 30533-right positioning claw, 307-discharge conveying line, 40-tube lathe, 50-height detector, 501-mounting rack, 502-detection positioning cylinder, 503-height detection plate, 504-range cylinder, 60-tube body side punching machine, 601-main body rack, 6011-upper machine frame, 60111-second horizontal guide rail, 6012-lower base, 602-tube body feeding positioning conveyor, 603-welding seam detection positioning mechanism, 6031-second fixing seat, 6032-rotary positioning motor, 6033-fixing shaft, 6034-rotary main shaft, 6035-tube body positioning sleeve, 6036-supporting step, 6037-color mark sensor, 6038-driving gear, 6039-synchronous belt, 60310-driven gear, 604-horizontal feeding mechanism, 6041-horizontal feeding arm, 60411-sliding block, 60412-lifting cylinder, 60413-clamping cylinder, 60414-second left clamping jaw, 60415-second right clamping jaw, 6042-horizontal moving servo motor, 6043-screw rod transmission pair, 605-preformed convex hull and side punching small hole mechanism, 6051-side punching small hole oil cylinder, 60511-convex hull preformed concave die, 60512-first punch, 60513-concave die cavity, 6052-convex hull preformed oil cylinder, 6053-first side punch die holder, 60541-convex hull preformed convex die, 606-convex hull forming and side punching large hole mechanism, 6061-second push rod oil cylinder, 6062-second side punch die holder, 6063-convex hull forming oil cylinder, 60631-convex hull forming female die, 606311-second abdicating hole, 6064-second push rod, 60641-second driving inclined plane, 6065-second punch slide block, 60651-second passive inclined plane, 60652-convex hull forming male die, 60653-second punch, 6067-second slide rail, 6068-second push rod position sensor, 607-three-hole side punching mechanism, 6071-third side punching die seat, 6072-third push rod oil cylinder, 60721-third push rod position detection sensor, 6074-side punching oil cylinder, 60741-punching female die, 60742-third abdicating hole, 6075-third punch slide block, 60751-third passive inclined plane, 6076-pipe body position positioning component, 6077-third push rod, 60771-third driving inclined plane, 6078-third punch, 6079-third slide rail, 608-pipe discharging conveyor, 609-control device, 6091-oil pressure system, 6092-electric cabinet, 70-bracket intermediate frequency spot welding machine, 80-conduit intermediate frequency spot welding machine, 801-conduit vibration feeding disc, 802-material grabbing mechanical arm, 803-resistance welding gun, 90-brazing machine, 100-secondary pipe expander, 110-gas shielded welding machine, 120-rack lathe, 130-spray cleaning and drying equipment, 140-ultrasonic cleaning and drying equipment and 150-feeding robot.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 48, the compressor robot intelligent welding production line includes a workpiece conveying line 10, and a pipe cutting machine 20, a primary pipe expanding machine 30, a pipe lathe 40, a height detecting machine 50, a pipe body side punching machine 60, a bracket intermediate frequency spot welding machine 70, a conduit intermediate frequency spot welding machine 80, a brazing machine 90, a secondary pipe expanding machine 100, a gas shielded welding machine 110, and a frame lathe 120, which are sequentially arranged along a conveying direction of the workpiece conveying line 10;

the pipe cutting machine 20 is used for cutting a long-strip pipe material to form a pipe body;

the primary pipe expander 30 is configured to perform primary pipe expansion on a pipe body;

the pipe fitting lathe 40 is used for turning the two ends of the pipe body;

the height detector 50 is used for detecting whether the height of the turned pipe body is qualified or not;

the pipe body side punching machine 60 is used for punching the side wall of the pipe body qualified in height detection;

the bracket intermediate frequency spot welding machine 70 is used for welding the bracket on the punched pipe body;

the guide pipe intermediate frequency spot welding machine 80 is used for welding the guide pipe on the side wall of the pipe body;

the brazing machine 90 is used for welding the guide pipe on the side wall of the pipe body;

the secondary pipe expander 100 is used for performing secondary pipe expansion on a pipe body;

the gas shielded welding machine 110 is used for welding the rack on the inner wall of the pipe body;

the frame lathe 120 is used to turn the end surface of the frame extending from the tube.

The workpiece conveying line 10 is a bearing device for moving workpieces on a production line, and specifically adopts a roller conveying mode, the conveying direction of the workpiece conveying line 10 is the flowing direction of the workpieces, the workpieces move on the workpiece conveying line 10 and sequentially pass through different processing stations of the production line, and are further processed by different devices, and finally complete products are formed. The pipe cutting machine 20, the primary pipe expanding machine 30, the pipe fitting lathe 40, the height detecting machine 50, the pipe body side punching machine 60, the support intermediate frequency spot welding machine 70, the guide intermediate frequency spot welding machine 80, the brazing machine 90, the secondary pipe expanding machine 100, the gas shielded welding machine 110 and the rack lathe 120 are sequentially arranged along the transmission direction of the workpiece conveying line 10, each device corresponds to one station, and some devices are arranged above the workpiece conveying line 10 and some devices are arranged on one side of the workpiece conveying line 10. The production line roughly comprises the following processing processes: the long-strip pipe fitting raw material is cut into short pipe bodies by the pipe cutting machine 20 at a cutting station, each pipe body is correspondingly processed into a compressor shell, and the length of each pipe body can be flexibly set according to requirements; conveying the cut pipe body to a primary pipe expanding station, and performing primary pipe expanding on the pipe fitting by using a primary pipe expander 30; the pipe body after the initial pipe expansion is moved to a pipe fitting turning station through the workpiece conveying line 10, and a pipe fitting lathe 40 turns two ends of the pipe body after the pipe expansion so as to enable the two ends of the pipe body to be flat; then the pipe fitting is conveyed to a height detection station, the height of the turned pipe body is detected by a height detection machine 50 to judge whether the pipe body is qualified or not, and if the pipe body is not qualified, a corresponding alarm prompt is sent out and taken away from the production line; the qualified pipe body detected by the height detector 50 is conveyed to a pipe body side punching station, the pipe body side punching machine 60 punches a hole on the side wall of the pipe body, a large hole (for installing a conduit) and a small hole (for positioning) are generally punched, and a hydraulic press for punching a boss can be arranged at the station according to the requirements of different types of products; conveying the punched pipe body to a bracket welding station, and welding a bracket on the punched pipe body by a bracket intermediate frequency electric welding machine on the station; the pipe intermediate frequency electric welding machine and the brazing machine 90 are arranged behind the support welding station, the two devices are used for welding the pipe on the pipe body, the pipe can be selectively welded by the pipe intermediate frequency electric welding machine or the brazing machine 90 aiming at different products, if a certain pipe body needs to be welded by the pipe intermediate frequency electric welding machine, the pipe intermediate frequency electric welding machine is used for welding when the certain pipe body flows to the station corresponding to the pipe intermediate frequency electric welding machine, the brazing machine 90 is not needed to be welded again after welding, and the pipe intermediate frequency electric welding machine can directly flow through the station corresponding to the brazing machine 90 and flow to the next station; if a certain pipe body needs to be welded by the brazing machine 90, the pipe body directly flows through a station corresponding to the guide pipe intermediate frequency electric welding machine, flows to a station corresponding to the brazing machine 90 and is welded by the brazing machine 90; the pipe body continues to move, when the pipe body moves to the secondary pipe expanding station, the secondary pipe expander 100 is used for carrying out secondary pipe expansion on the pipe body, and the secondary pipe expander 100 and the primary pipe expander 30 are identical in structure; a gas shielded welding machine 110 and a frame lathe 120 are arranged behind the secondary pipe expanding station, and for products of different models, if a frame (generally an annular workpiece) needs to be welded inside the pipe body, the frame is welded inside the pipe body by the gas shielded welding machine 110 when the pipe body flows to the station of the gas shielded welding machine 110; the welded frame tube is continuously transferred to a station corresponding to the frame lathe 120, and the frame lathe 120 turns the end face of the frame extending out of the tube; conveying the turned pipe body to the following stations for manual detection, packaging and the like; if the pipe produced by the production line does not need to be welded with a frame, the pipe directly flows to a manual detection and packaging station after secondary pipe expansion, and does not need to be processed when passing through the stations of the gas shielded welding machine 110 and the frame lathe 120.

The existing compressor robot intelligent welding production line has low automation degree, and a lot of work needs manual operation, thereby affecting the efficiency; moreover, the production line is incomplete, the workpieces need to be transported by manpower between stations, and the production line needs to be additionally arranged or adjusted in a large quantity for producing different types of products; therefore, the existing compressor robot intelligent welding production line is low in automation degree, the produced products are single, and the compressor robot intelligent welding production line is not practical enough in practical application. According to the technical scheme, the pipe cutting machine 20, the primary pipe expanding machine 30, the pipe fitting lathe 40, the height detection machine 50, the pipe body side punching machine 60, the support intermediate frequency spot welding machine 70, the guide pipe intermediate frequency spot welding machine 80, the brazing machine 90, the secondary pipe expanding machine 100, the gas shielded welding machine 110 and the frame lathe 120 are sequentially arranged in the conveying direction of the workpiece conveying line 10, so that the automation degree of the punching and welding production of the compressor shell is higher, the compressor shell is more intelligent, and the efficiency is higher; on the other hand, the production line is provided with stations meeting the processing requirements of different products and corresponding equipment, so that the same production line can process different products, the production line is more practical, and the production cost is lower.

Further, the pipe cutter 20 includes:

a cutting mechanism 201 for cutting the pipe;

the feeding mechanism 202 is positioned on one side where the discharging end of the cutting mechanism 201 is positioned, and a pipe fitting on the feeding mechanism 202 is over against the discharging end of the cutting mechanism 201;

the feeding mechanism 203 is positioned on one side of the feeding end of the cutting mechanism 201, the feeding mechanism 203 is provided with a guide rod 2031 for limiting the pipe fittings, and the guide rod 2031 enables the pipe fittings to be right opposite to the feeding end of the cutting mechanism 201;

and the limiting mechanism 204 is positioned on one side where the discharge end of the cutting mechanism 201 is positioned, and the limiting mechanism 204 is used for limiting the pipe fitting extending out of the discharge end of the cutting mechanism 201.

The cutting mechanism 201 is used for cutting the pipe, specifically, the pipe to be cut is inserted into the cutting mechanism 201 from the feeding end of the cutting mechanism 201 and extends out from the discharging end of the cutting mechanism 201, then the cutting mechanism 201 cuts off the pipe inserted inside the cutting mechanism 201, and the cut pipe is discharged from the discharging end of the cutting mechanism 201. The feeding mechanism 202 is used for feeding the pipe to be cut to the feeding mechanism 203, the feeding mechanism 202 is located on one side where the discharge end of the cutting mechanism 201 is located, when the pipe is loaded on the feeding mechanism 202, the pipe is right opposite to the discharge end of the cutting mechanism 201, namely, the pipe on the feeding mechanism 202 can be inserted into the cutting mechanism 201 from the discharge end of the cutting mechanism 201 and fed to the feeding mechanism 203 through cutting. The feeding mechanism 203 is located at one side where the feeding end of the cutting mechanism 201 is located, that is, the feeding mechanism 202 and the feeding mechanism are respectively located at two sides of the cutting mechanism 201; the feeding mechanism 203 is used for carrying the pipe fittings fed from the feeding mechanism 202 and conveying the pipe fittings from the feeding end of the cutting mechanism 201 to the cutting mechanism 201 for cutting by the cutting mechanism 201. The feeding mechanism 203 is provided with a guide rod 2031, the outer diameter of the guide rod 2031 is equal to or smaller than the inner diameter of the pipe fitting, and when the feeding mechanism 202 conveys the pipe fitting to the feeding mechanism 203, the pipe fitting is sleeved on the guide rod 2031. Specifically, one end of the guide rod 2031, which is far away from the cutting mechanism 201, is fixed on the feeding mechanism 203, so that other parts of the guide rod 2031, except for the end connected with the feeding mechanism 203, are not contacted by other parts, and thus the pipe fitting can be sleeved on the guide rod 2031. The limiting mechanism 204 is applied to the pipe cutting machine 20 for limiting the pipe extending from the cutting mechanism 201 so as to make the length of the cut pipe conform to the required length, and therefore the limiting mechanism 204 is disposed on the side of the discharge end of the cutting mechanism 201.

In the general pipe cutting machine 20, generally, the feeding mechanism 202 directly feeds the pipe fitting into the cutting mechanism 201, then the cutting mechanism 201 cuts the pipe fitting, and then the pipe fitting is cut and then discharged; the feeding mechanism 202 feeds the pipe fitting into the cutting mechanism 201, and a manipulator mode is often adopted for feeding, and the manipulator in the mode is complex and high in cost; or the pipe fitting is directly pushed to move into the cutting mechanism 201, and the mode has no structure for limiting the pipe fitting, so that the pipe fitting is not stable enough in the feeding process; especially for long-strip pipe fittings with the length of several meters, the stability of the existing pipe cutting machine 20 in the feeding process and the cutting process is difficult to guarantee. According to the technical scheme, the feeding mechanism 203 and the feeding mechanism 202 are respectively arranged on one side where the feeding end and the discharging end of the cutting mechanism 201 are located, the pipe fitting to be cut penetrates through the cutting mechanism 201 through the feeding mechanism 202 and is conveyed into the feeding mechanism 203, and the feeding mechanism 203 is provided with the guide rod 2031, so that the pipe fitting can be sleeved on the guide rod 2031 to limit the pipe fitting; because the guide rod 2031 is arranged on the feeding mechanism 203, and one end of the guide rod 2031, which is far away from the cutting mechanism 201, is fixed on the feeding mechanism 203, the pipe fitting cannot be fed from the side of the feeding mechanism 203 or one end of the pipe fitting, which is far away from the cutting mechanism 201, in the technical scheme, the feeding mechanism 202 is arranged at one side where the discharge end of the cutting mechanism 201 is located, so that the pipe fitting can be normally fed to the feeding mechanism 203, and the pipe fitting is directly sleeved on the guide rod 2031 after the feeding is finished, thereby ensuring the stability of the pipe fitting in the cutting process; on the other hand, the feeding mechanism 203 and the feeding mechanism 202 are respectively arranged at one side of the cutting mechanism 201 where the feeding end and the discharging end are located, and the pipe fitting needs to pass through the cutting mechanism 201 in the feeding and feeding processes, so that the coaxiality of the feeding mechanism 202, the cutting mechanism 201 and the feeding mechanism 203 is very high, the pipe fitting is also more stable and more accurate in the feeding, feeding and cutting processes, the processing precision is higher, and the processing is more convenient. The feeding mechanism 202 and the feeding mechanism 203 are respectively located on two sides of the cutting mechanism 201, and in the process that the feeding mechanism 203 conveys the pipe fittings to the cutting mechanism 201, workers or other feeding devices can feed the pipe fittings on the storage rack to the feeding mechanism 202, so that the production efficiency is improved.

Further, the cutting mechanism 201 includes:

a movable mold 2011, which is provided with a movable mold cavity 20111 for pipe fittings to penetrate through and is positioned at one side close to the discharge end of the cutting mechanism 201;

the fixed die 2012 is provided with a fixed die cavity 20121 communicated with the movable die cavity 20111, and the fixed die 2012 and the movable die 2011 are attached to each other and positioned on one side close to the feeding end of the cutting mechanism 201;

the movable mold 2011 can be attached and swung in the radial direction of the pipe fitting relative to the fixed mold 2012.

The movable mold 2011 and the fixed mold 2012 are attached to each other, and a small gap is left between the movable mold 2011 and the fixed mold 2012, specifically, the movable mold 2011 is positioned at the discharge end of the cutting mechanism 201, and the fixed mold 2012 is positioned at the feed end of the cutting mechanism 201; the movable mold 2011 and the fixed mold 2012 are respectively provided with a movable mold cavity 20111 and a fixed mold cavity 20121 which are used for pipe fittings to pass through and are communicated with each other; the dynamic film die can be attached and swung in the radial direction of the pipe fitting relative to the fixed die 2012; the power source for attaching and swinging the movable mold 2011 can adopt two hydraulic cylinders 30322015 to respectively control the swinging of the movable mold 2011 in the vertical direction and the left-right direction; of course, the power source of the movable mold 2011 may take other forms. The pipe enters the cutting mechanism 201 from the feeding mechanism 203, specifically, the pipe sequentially passes through the fixed die cavity 20121 and the movable die cavity 20111, the position to be cut is located in a gap between the movable die 2011 and the fixed die, the hydraulic cylinder 30322015 controls the movable die 2011 to move a small distance in the vertical direction and the horizontal direction, namely, the movable die 2011 is dislocated relative to the fixed die 2012, and therefore the pipe is cut off at the position of the attaching face of the movable die 2011 and the fixed die 2012. Compare in the cutting of the abrasive machine that produces the sweeps more, the great circular sawing machine of manpower consumption cutting and the very high laser cutting of cost, this embodiment is through the dislocation that adopts movable mould 2011 and fixed mould 2012 in order to cut the pipe fitting, and not only the cost is lower, can not produce the sweeps in the cutting process moreover almost, and the incision after the cutting is also more level and more smooth.

Further, the cutting mechanism 201 further includes:

a movable mold core 2013 fixed at one end of the guide rod 2031 and located in the movable mold cavity 20111;

the fixed die core 2014 is arranged at one end of the movable die core 2013 and is positioned in the fixed die cavity 20121, and the movable die core 2013 can be attached and swung on the radial direction of the pipe fitting relative to the fixed die core 2014.

As mentioned above, the pipe is sleeved on the guide rod 2031 during feeding, and the pipe extends into the moving mold cavity 20111 and the fixed mold cavity 20121 during cutting, so that the moving mold core 2013 and the fixed mold core 2014 are respectively arranged in the moving mold cavity 20111 and the fixed mold cavity 20121 to make the pipe more stable during cutting. The pipe fitting is sleeved on the movable mould core 2013 and the fixed mould core 2014 simultaneously, the outer diameters of the movable mould core 2013 and the fixed mould core 2014 are both equal to or slightly smaller than the inner diameter of the pipe fitting, the clearance between the movable mould core 2013 and the inner wall of the movable mould cavity 20111 is equal to or approximately equal to the wall thickness of the pipe fitting, and similarly, the clearance between the fixed mould core 2014 and the inner wall of the fixed mould cavity 20121 is equal to or approximately equal to the wall thickness of the pipe fitting. The movable die core 2013 and the fixed die core 2014 are arranged, so that the stability of the pipe can be ensured in the pipe cutting process, and the deformation of the pipe can be effectively avoided; the movable mold core 2013 can be attached to and swing on the radial direction of the pipe fitting relative to the fixed mold core 2014, so that the pipe fitting is limited, and the swinging of the movable mold core is prevented from being interfered. After the movable mold core 2013 swings relative to the fixed mold core 2014, the movable mold core 2013 can be reset through the reset spring.

Further, the limiting mechanism 204 comprises a mounting seat 2041, an air cylinder 2042, a connecting block 2043 and a stop rod 2044; the mounting seat 2041 is mounted on the cutting mechanism 201 through a connecting assembly 205; the cylinder 2042 is mounted on the mounting seat 2041; the connecting block 2043 is mounted on the output end of the cylinder 2042 and is hinged to the mounting seat 2041; the stop rod 2044 is mounted on the connecting block 2043 and is used for abutting against a pipe extending from the discharge end of the cutting mechanism 201.

The limiting mechanism 204 comprises a mounting seat 2041, an air cylinder 2042, a connecting block 2043 and a stop rod 2044; the mounting seat 2041 is disposed at the discharging end of the cutting mechanism 201, and the mounting seat 2041 may be mounted on the cutting mechanism 201 or on another rack. The cylinder 2042 is mounted on the mounting seat 2041, and an output end of the cylinder 2042 faces an output end of the cutting mechanism 201. The connecting block 2043 is mounted on the output end of the cylinder 2042 and is hinged to the mounting seat 2041; specifically, an accommodating cavity for accommodating the connecting block 2043 may be provided in the middle of the mounting seat 2041, the connecting block 2043 is then placed in the accommodating cavity, and then the connecting block 2043 is mounted on the mounting seat 2041 by passing the rotating shaft through the connecting block 2043. The stop rod 2044 is installed on the connecting block 2043 and located between the mounting seat 2041 and the output end of the cutting mechanism 201, and the stop rod 2044 is used for abutting against a pipe extending from the discharge end of the cutting mechanism 201. The whole process is as follows: the pipe fitting penetrates through the cutting mechanism 201 and extends out of the output end of the cutting mechanism 201 by a certain length; the output end of the cylinder 2042 extends to make the connecting block 2043 rotate downward by a certain angle around the hinge joint between the mounting seat 2041 and the connecting block 2043, and further drive the stop rod 2044 to rotate downward by a certain angle; then, one end of the pipe is abutted against the stop rod 2044, and the distance between the cutting position and the stop rod 2044 is the length of the pipe to be cut; then, the cutting mechanism 201 cuts the pipe fitting; after the cutting is completed, the output end of the cylinder 2042 contracts, so that the connecting block 2043 rotates upward for a certain angle around the hinged position of the mounting seat 2041 and the connecting block 2043, and further drives the stop rod 2044 to rotate upward for a certain angle, and at this time, the stop rod 2044 no longer supports one end of the pipe; then, the pipe to be cut moves to one side of the output end of the cutting mechanism 201, and the cut pipe is pushed out, so that the blanking of the pipe is completed; and circulating the steps to continuously cut the pipe fitting.

By extending the output end of the cylinder 2042, the stop rod 2044 rotates and moves a certain distance downwards to abut against the pipe extending from the output end of the cutting mechanism 201, so that the pipe is limited, and the length of the cut pipe is more accurate; after the pipe fitting is cut, the stop rod 2044 can no longer abut against the pipe fitting through contraction of the output end of the cylinder 2042, so that blanking of the pipe fitting is facilitated. The length of the pipe fitting to be cut can be adjusted by setting the distance between the mounting seat 2041 and the discharge end of the cutting machine; but also the length of the cut pipe can be adjusted by setting the length of the extension of the output end of the cylinder 2042. Therefore, the limiting mechanism 204 not only can enable the length of the pipe to be cut by the pipe cutting machine 20 to be more accurate, but also can conveniently adjust the length of the cut pipe; on the other hand, the structure of the limiting mechanism 204 not only facilitates abutting against the pipe fitting, but also does not affect blanking after the pipe fitting is cut.

The connecting assembly 205 comprises a transverse sliding block 2051, a screw nut 2052, a transverse screw 2053 and a supporting block 2054; the support block 2054 is mounted on the cutting mechanism 201; the transverse screw 2053 is mounted on the support block 2054 so as to be rotatable about its central axis, and is located on the side of the output end of the cutting mechanism 201; the screw nut 2052 is mounted on the transverse sliding block 2051, and the screw nut 2052 is in threaded connection with the transverse screw 2053; the mounting seat 2041 is mounted on the lateral slide block 2051.

The connecting assembly 205 is used for mounting the mounting seat 2041 on the cutting mechanism 201, and the connecting assembly 205 comprises a transverse sliding block 2051, a screw nut 2052, a transverse screw 2053 and a supporting block 2054; a supporting block 2054 is arranged on the upper end face of the cutting mechanism 201, one end of a transverse screw rod 2053 is arranged on the supporting block 2054, the transverse screw rod 2053 can rotate around the central axis of the transverse screw rod 2054, and the length extension direction of the transverse screw rod 2053 is the direction in which a pipe fitting extends out of the output end of the cutting mechanism 201; the screw rod nut 2052 is mounted on the transverse sliding block 2051, and the transverse sliding block 2051 is used for fixing the mounting seat 2041; the screw nut 2052 is sleeved on the transverse screw 2053 and is in threaded connection with the transverse screw 2053. When the transverse screw rod 2053 rotates, the screw rod nut 2052 can be driven to slide on the transverse screw rod 2053; the sliding of the screw rod nut 2052 can drive the transverse sliding block 2051 and the mounting seat 2041 arranged on the transverse sliding block 2051 to slide; further, the distance between the stop rod 2044 and the output end of the cutting mechanism 201 is reduced or increased, and finally the length of the cut pipe is adjusted. Therefore, the connecting assembly 205 is provided, so that the mounting seat 2041 can be mounted on the cutting mechanism 201, the compactness is improved, and the distance between the mounting seat 2041 and the cutting mechanism 201 can be conveniently adjusted, so as to adjust the length of the cut pipe.

Preferably, the connecting assembly 205 further includes a vertical sliding block 2055 and a vertical screw 2056, the vertical screw 2056 is rotatably mounted on the horizontal sliding block 2051 around a central axis thereof, the vertical sliding block 2055 is slidably mounted on the horizontal sliding block up and down and is in threaded connection with the vertical screw 2056, and the mounting seat 2041 is mounted on the vertical sliding block 2055. The connecting assembly 205 further comprises a vertical sliding block 2055 and a vertical screw 2056, the vertical screw 2056 is mounted on the horizontal sliding block 2051 and is perpendicular to the horizontal screw 2053, and the vertical screw 2056 can also rotate around the central axis thereof; the vertical sliding blocks 2055 are in threaded connection with the vertical screw rods 2056, the vertical sliding blocks 2055 can slide up and down relative to the horizontal sliding blocks 2051, and the mounting seats 2041 are specifically mounted on the vertical sliding blocks 2055. The vertical screw 2056 rotates to drive the vertical sliding block 2055 to slide on the vertical screw 2056, so as to adjust the horizontal height of the mounting seat 2041. Set up vertical sliding block 2055 and vertical lead screw 2056, can conveniently adjust the level of mount pad 2041, and then adjust the level of position bar 2044 to make position bar 2044 can accurately support the pipe fitting.

Further, the primary pipe expander 30 comprises a feeding manipulator 301, an alignment positioning device 302 and a pipe expanding device 303; the alignment positioning device 302 is arranged on one side of the pipe expanding device 303, and the feeding manipulator 301 is positioned above the alignment positioning device 302 and the pipe expanding device 303.

An alignment positioning device 302 for rotating the pipe body to position the pipe body through the hole position on the pipe body so that the pipe expanding device 303 expands the pipe body; a pipe expanding means 303 for expanding the diameter of the pipe body; the feeding robot 301 is configured to feed a pipe. The primary pipe expander 30 further includes an oil pressure system 6091304 for supplying hydraulic oil to the pipe expanding device 303 as a power source of the pipe expanding device 303. The primary pipe expanding machine 30 further comprises a feeding conveying line 305, a feeding manipulator 301 and a discharging conveying line 307, wherein the feeding conveying line 305 is used for conveying a pipe body to be expanded, and the feeding manipulator 301 is used for conveying the pipe body; the discharging conveying line 307 is used for conveying the expanded pipe body out; it is also understood that the infeed transfer line 305 and the outfeed transfer line 307 are part of the workpiece transfer line 10.

The alignment positioning device 302 comprises a first fixed seat 3021, an alignment lifting cylinder 3022, a lifting frame 3023, an alignment rotating table 3024 and an alignment rotating motor 3025, the crane 3023 slides up and down and is arranged on the first fixing base 3021, a lifting guide rail is arranged on the first fixing base 3021 along the vertical direction, the crane 3023 slides up and down and is arranged on the lifting guide rail, the alignment lifting cylinder 3022 is in driving connection with the crane 3023, the alignment rotating motor 3025 is arranged on the crane 3023, the alignment rotating table 3024 rotates horizontally and is arranged on the crane 3023 and above the alignment rotating motor 3025, a motor shaft of the alignment rotating motor 3025 is in driving connection with the alignment rotating table 3024, the alignment rotating table 3024 is provided with a positioning vertical sleeve head, the crane 3023 is provided with an alignment positioning cylinder 2042, a piston rod of the alignment positioning cylinder 2042 is provided with a fine positioning cross rod, the fine positioning cross rod is horizontally arranged on the crane 3023, and the fine positioning cross rod horizontally points to the positioning vertical sleeve head. The alignment rotary table 3024 is provided with a hole site detection device.

The pipe expanding device 303 comprises a base 3031, an oil cylinder 3032, an auxiliary pipe expanding mechanism 3033 and a pipe expanding die 3034, wherein the oil cylinder 3032 and the pipe expanding die 3034 are arranged on the base 3031, a first pipe expanding workbench 30311 and a second pipe expanding workbench 30312 are arranged on the base 3031, the first pipe expanding workbench 30311 and the second pipe expanding workbench 30312 are both provided with the pipe expanding die 3034, the oil cylinder 3032 is positioned below the first pipe expanding workbench 30311, the pipe expanding die 3034 comprises a pipe expanding base 30341, a conical mandrel 30342 and a plurality of pipe expanding arc plates 30343, the plurality of pipe expanding arc plates 30343 are annularly and vertically arranged on the pipe expanding base 30341, the outer walls of the plurality of pipe expanding arc plates 30343 surround the outer side surface of a cylinder, the inner wall of the pipe expanding arc plate 30343 is a conical inclined surface, the inner wall of the pipe expanding arc plate 30343 surrounds a pipe conical cavity, the conical plate 30342 is arranged in the conical cavity in a vertical sliding manner, the outer side surface of the conical mandrel 30342 is attached to the inner wall of each pipe expanding arc plate 30343, the conical mandrel 30342 is thick at the upper end and thin at the lower end, a limiting head 303423 is arranged at the upper end of the conical mandrel 30342, the lower end of the conical mandrel 30342 extends out of the pipe expanding base 30341, a connector 303421 is arranged at the lower end of the conical mandrel 30342, and a piston rod of the oil cylinder 3032 is connected with the connector 303421.

The upper ends of the plurality of expander arcs 30343 are provided with upper elastic hooping rings 30344, the upper elastic hooping rings 30344 hoop the upper ends of the plurality of expander arcs 30343, the lower ends of the plurality of expander arcs 30343 are provided with lower elastic hooping rings 30345, and the lower elastic hooping rings 30345 hoop the lower ends of the plurality of expander arcs 30343. The upper and lower resilient hoops 30345 keep the plurality of expander arc plates 30343 together when not expanding,

the pipe expanding base 30341 is internally provided with a pipe expanding abdicating cavity 303411, the upper part of the pipe expanding abdicating cavity 303411 is provided with a through hole 303412, the upper ends of the plurality of pipe expanding arc plates 30343 upwards extend out of the through hole 303412, the lower part of the pipe expanding abdicating cavity 303411 is provided with a shaft hole 303413, the lower end of the conical core shaft 30342 downwards extends out of the shaft hole 303413 and is connected with a connecting head 303421, the lower end of the pipe expanding arc plate 30343 is provided with a sliding block 60411, and the plurality of sliding blocks 60411 are arranged in the pipe expanding abdicating cavity 303411 in a radial reciprocating sliding manner.

The outer side surface of the conical mandrel 30342 is provided with a limiting guide groove 303422, the inner wall surface of the pipe expanding arc plate 30343 is provided with a guide inclined plate 303431, the guide inclined plate 303431 is arranged in the limiting guide groove 303422 in a sliding manner, when the conical mandrel 30342 moves downwards, the limiting guide groove 303422 slides on the guide inclined plate 303431, and the guide inclined plate 303431 limits the stroke of the conical mandrel 30342, namely the pipe expanding stroke of the pipe expanding arc plate 30343, namely the range of the pipe expanding diameter of the pipe expanding die 3034 is set.

The auxiliary pipe expanding mechanism 3033 comprises a pipe body rotating cylinder 30331, a rotating plate 30332 and a pipe body rotating ring 30333, wherein the pipe body rotating cylinder 30331 is arranged on the workbench and located beside the pipe expanding die 3034, the pipe body rotating ring 30333 is sleeved outside the plurality of pipe expanding arc plates 30343 and located in the pipe expanding abdicating cavity 303411, the inner end of the rotating plate 30332 is connected with the pipe body rotating ring 30333, and the outer end of the rotating plate 30332 is movably connected with a cylinder rod of the pipe body rotating cylinder 30331.

The tube body rotating cylinder 30331 is provided with a pivot 303311 on the cylinder rod, the outer end of the rotating plate 30332 is provided with a sliding slot hole 303321, and the rotating plate 30332 slides on the pivot 303311 through the sliding slot hole 303321. When the cylinder rod of the tube body rotating cylinder 30331 extends, the cylinder rod of the tube body rotating cylinder 30331 drives the outer end of the rotating plate 30332 to move, the sliding slot hole 303321 slides on the pivot shaft 303311, the outer end of the rotating plate 30332 rotates around the pivot shaft 303311, the inner end of the rotating plate 30332 drives the tube body rotating ring 30333 to rotate, the extension length of the cylinder rod of the tube body rotating cylinder 30331 can be set, and therefore the same angle of rotation of the tube body driven by the tube body rotating ring 30333 can be ensured.

The feeding manipulator 301 comprises a fixed frame 3011 and a first horizontal moving servo motor 3012, a feeding station manipulator 3013 is arranged on the fixed frame 3011 corresponding to the feeding conveying line 305, an alignment station manipulator 3014 is arranged on the fixed frame 3011 corresponding to the alignment positioning device 302, a pipe expanding station manipulator 3015 is arranged on the fixed frame 3011 corresponding to the pipe expanding device 303, a discharging station manipulator 3016 is arranged on the fixed frame 3011 corresponding to the discharging conveying line 307, the feeding station manipulator 3013, the alignment station manipulator 3014, the pipe expanding station manipulator 3015 and the discharging station manipulator 3016 are sequentially arranged on the fixed frame 3011 from front to back, a first horizontal guide rail 3017 is arranged on the fixed frame 3011 along the horizontal direction, the feeding station manipulator 3013, the alignment station manipulator 3014, the pipe expanding station manipulator 3015 and the discharging station manipulator 3016 are arranged on the first horizontal guide rail 3017 in a sliding manner, two adjacent manipulators are connected through a pull rod 3018, on mount 3011 was located to first horizontal migration servo motor 3012, first horizontal migration servo motor 3012 and ejection of compact station manipulator 3016 lead screw transmission are connected to drive all station manipulators and do the horizontal slip in step, realize feeding station manipulator 3013, alignment station manipulator 3014, expand pipe station manipulator 3015 and ejection of compact station manipulator 3016 synchronous movement pay-off.

The feeding station manipulator 3013 includes a first base 30131, a first lifting cylinder 30132, a first lifting seat 30133, and a first material clamping cylinder 30134, the first material clamping cylinder 30134 is disposed on the first lifting seat 30133, the first lifting seat 30133 is disposed on the first base 30131 in a vertically sliding manner, the first lifting cylinder 30132 is disposed on the first base 30131 and is connected to the first lifting seat 30133 in a driving manner, the first lifting seat 30133 is provided with a first guide shaft 301331 along a lifting direction thereof, the first base 30131 is provided with a first lifting guide block 301311, a first guide shaft 301331 is disposed on the first lifting guide block 301311 in a sliding manner, three output ends of the first material clamping cylinder 30134 are respectively provided with a first claw (not shown in the figure), the third output end of the first material clamping cylinder 30134 drives the first jaw, the second jaw, and the third jaw to move toward or away from each other to move away from each other.

The alignment station manipulator 3014, the pipe expanding manipulator 3015 and the discharge station manipulator 3016 each include a second base 30141, a second lifting cylinder 30142, a second lifting seat 30143 and a second material clamping cylinder 30144, the second material clamping cylinder 30144 is disposed on the second lifting seat 30143, the second lifting seat 30143 is disposed on the second base 30141 in a vertically sliding manner, the second lifting cylinder 30142 is disposed on the second base 30141 and is connected to the second lifting seat 30143 in a driving manner, the second lifting seat 30143 is provided with a second guide shaft 301421 along the lifting direction, the second base 30141 is provided with a second lifting guide block 301411, the second guide shaft 301421 is disposed on the second lifting guide block 301411 in a sliding manner, two output ends of the second material clamping cylinder 30144 are respectively provided with a first left clamping jaw 301441 and a first right clamping jaw 301442, two output ends of the second material clamping cylinder 30144 respectively drive the first left clamping jaw 301441 and the first clamping jaw 301442 to move in opposite directions or move in opposite directions to move apart, therefore, the second material clamping cylinder 30144 can drive the first left clamping jaw 301441 and the first right clamping jaw 301442 to clamp or lower the pipe body.

Be equipped with on feeding transfer chain 305 and keep off material cylinder 3051, examine material sensor 3052 and body positioning mechanism 3053, body positioning mechanism 3053 is located the discharge end of feeding transfer chain 305, keep off material cylinder 3051 and be located body positioning mechanism 3053's the place ahead, body positioning mechanism 3053 includes body positioning cylinder 30531, left side positioning claw 30532 and right positioning claw 30533, two outputs of body positioning cylinder 30531 respectively with left positioning claw 30532, right positioning claw 30533 drive is connected, left side positioning claw 30532, right positioning claw 30533 constitutes a pliers, the opening of pliers is towards keeping off material cylinder 3051. The pipe body positioning cylinder 30531 drives the left positioning claw 30532 and the right positioning claw 30533 to close or separate. After the positioning claws and the right positioning claw 30533 are folded, the pipe body conveyed by the feeding conveying line 305 moves into the opening of the pliers, and the positioning of the pipe body is realized.

Further, the height detection machine 50 comprises a mounting frame 501, a detection positioning cylinder 502, a height detection plate 503, a measuring range cylinder 504 and a position sensor; the measuring range cylinder 504 and the plurality of detection positioning cylinders 502 are arranged on the mounting frame 501; the height detection plate 503 is mounted on the measuring range cylinder 504, and the measuring range cylinder 504 can drive the height detection plate 503 to lift; the position sensor is mounted on the height detection plate 503, and the detection positioning cylinder 502 is used for pushing the pipe body to align with the position sensor.

A plurality of detecting and positioning air cylinders 502 of the height detecting machine 50 push the pipe body to translate so that the pipe body can be aligned with the position sensors and the height detecting plate 503, when the height detecting machine 50 detects the height of the pipe body, the measuring range air cylinder 504 drives the height detecting plate 503 and the position sensors (not shown in the figure) to descend, the height detecting plate 503 abuts against the upper end of the pipe body, and the height of the pipe body is known by the position sensors. If the height of the pipe body meets the production specification, the detection positioning cylinder 502 of the height detection machine 50 pushes out the pipe body, and if the height of the pipe body does not meet the production specification, the height detection machine 50 gives an alarm to inform a worker, and the worker takes away the pipe body.

Further, the tube body side punching machine 60 comprises a main body frame 601, a tube body feeding positioning conveyor 602, a welding seam detecting and positioning mechanism 603, a horizontal feeding mechanism 604, a preformed convex hull and side punching small hole mechanism 605, a convex hull forming and side punching large hole mechanism 606, a three-hole side punching mechanism 607 and a tube body discharging conveyor 608;

the welding seam detection and positioning mechanism 603 is arranged on the main body frame 601 and is used for detecting the position of a welding seam on the pipe body and rotationally positioning the pipe body, so that the subsequent punching mechanism can avoid the welding seam and avoid punching the welding seam to cause the pipe body to crack;

the horizontal feeding mechanism 604 is arranged at the upper part of the main body frame 601 and is used for conveying pipe bodies;

the pre-forming convex hull and side punching small hole mechanism 605 is arranged on the main body frame 601 and is positioned below the horizontal feeding mechanism 604, and is used for pre-forming an initial convex hull on the outer side wall of the pipe body and punching a small hole on the initial convex hull;

the convex hull forming and side punching large hole mechanism 606 is arranged on the main body frame 601 and below the horizontal feeding mechanism 604, and is used for forming the initial convex hull into a formed convex hull and punching the small hole into a large hole;

the three-hole side punching mechanism 607 is arranged on the main body frame 601, is positioned below the horizontal feeding mechanism 604, and is used for punching three open holes on the outer side wall of the pipe body along the circumferential direction of the pipe body;

the pipe feeding and positioning conveyor 602 is configured to convey a pipe to the weld detecting and positioning mechanism 603; and the pipe discharging conveyor 608 is configured to convey the punched pipe out.

The tube side punch 60 further includes a control device 609, an oil pressure system 6091304, and an electric cabinet 6092; specifically, the main frame 601 includes an upper frame 6011 and a lower base 6012, and the upper frame 6011 is disposed above the lower base 6012; the control device 609 is arranged on the upper machine frame 6011 and used for controlling the whole equipment to work; the oil pressure system 6091304 and the electric cabinet 6092 are both arranged on one side of the main body frame 601, and the oil pressure system 6091304 provides hydraulic oil for the whole device; the electric cabinet 6092 supplies power to the whole equipment; the horizontal feeding mechanism 604 is arranged on the upper machine frame 6011, and the welding seam detection positioning mechanism 603, the preformed convex hull and side punching small hole mechanism 605 and the three-hole side punching mechanism 607 are sequentially arranged on the lower base 6012 and located below the horizontal feeding mechanism 604.

The welding seam detecting and positioning mechanism 603 comprises a second fixing seat 6031, a rotary positioning motor 6032, a fixing shaft 6033, a rotary main shaft 6034 and a pipe body positioning sleeve 6035, the fixing shaft 6033 is vertical and is arranged on the second fixing seat 6031, the rotary main shaft 6034 is sleeved and rotatably arranged on the fixing shaft 6033, the pipe body positioning sleeve 6035 is sleeved on the rotary main shaft 6034, the rotary positioning motor 6032 is arranged on the second fixing seat 6031 and is in driving connection with the rotary main shaft 6034, a bearing step 6036 is arranged on the rotary main shaft 6034, and a color mark sensor 6037 is arranged at the upper end of the fixing shaft 6033. The rotating spindle 6034 is rotatably disposed on the second fixing seat 6031 through a bearing, and the rotating positioning motor 6032 is drivingly connected to the rotating spindle 6034 through a driving gear 6038, a synchronous belt 6039, and a driven gear 60310.

Preforming convex closure and side blow aperture mechanism 605 includes side blow aperture hydro-cylinder 6051, convex closure preforming hydro-cylinder 6052 and first side die utensil seat 6053, convex closure preforming hydro-cylinder 6052 is located by first side die utensil seat 6053, side blow aperture hydro-cylinder 6051 is located on the piston rod of convex closure preforming hydro-cylinder 6052, be equipped with convex closure preforming terrace die 60541 on the lateral wall of first side die utensil seat 6053, it is equipped with convex closure preforming die 60511 to correspond convex closure preforming terrace die 60541 on side blow aperture hydro-cylinder 6051, be equipped with first drift 60512 on the piston rod of side blow aperture hydro-cylinder 6051, first drift 60512 is located convex closure preforming die cavity 60513 of die 60511.

The convex hull forming and side punching large hole mechanism 606 comprises a second push rod oil cylinder 6061, a second side die holder 6062, a convex hull forming oil cylinder 6063, a second push rod 6064 and a second punch block 6065, the convex hull forming oil cylinder 6063 is arranged beside the second side die holder 6062, the second push rod 6064 is movably arranged in the second side die holder 6062 up and down, the second push rod oil cylinder 6061 is arranged below the second side die holder 6062 and is in driving connection with the second push rod 6064, the second push rod 6064 is provided with a second driving inclined surface 60641, the second punch block 6065 is horizontally and slidably arranged on the side wall of the second side die holder 6062, the inner end of the second punch block 6065 is provided with a second driven inclined surface 60651, the outer end of the second punch block 6065 is provided with a convex hull forming convex hull 60652 and a second punch 60653, the second punch block 6032 is arranged on the convex hull forming convex hull 60 60641, the second driving inclined surface 60651 is in transmission fit with a convex hull forming piston rod 60652 corresponding to the convex hull forming oil cylinder 6063, a second abdicating hole 606311 is arranged in the die cavity 60513 of the convex hull forming die 60631. The second driving inclined plane 60641 is provided with a second slide rail 6067, and the second punch slide 6065 is slidably arranged on the second slide rail 6067. The second push rod cylinder 6061 is provided with a second push rod 6064 position sensor for detecting the position of the second push rod 6064. When the mechanism punches and forms a convex hull, the second push rod oil cylinder 6061 drives the second push rod 6064 to slide upwards, the second driving inclined plane 60641 pushes the second punch slide block 6065, the convex hull forming convex die 60652 and the second punch 60653 to slide horizontally outwards, the convex hull forming convex die 60652 is punched horizontally from inside to outside, the convex hull forming convex die 60652 and the convex hull forming concave die 60631 shape the initial convex hull internally and externally to form a formed convex hull, and meanwhile, the second punch 60653 punches a hole horizontally from inside to outside to punch the small hole into a large hole. After the second punch 60653 punches, the scrap is punched into the second escape hole 606311 and then discharged.

The three-hole side punching mechanism 607 includes a third side punching die base 6071, a third push rod cylinder 6072, a third push rod 6077, three side punching cylinders 6074, three third punch sliders 6075 and a pipe body position positioning component 6076, the three side punching cylinders 6074 and the pipe body position positioning component 6076 are annularly arranged on the periphery of the third side punching die base 6071, the third push rod 6077 is movably arranged in the third side punching die base 6071 up and down, the third push rod cylinder 6072 is arranged below the third side punching die base 6071 and is in driving connection with the third push rod 6077, the third push rod 6077 is provided with a third driving inclined surface 60771, the third punch slider 6075 is horizontally slidably arranged on the side wall of the third side punching die base 6071, and the three third punch sliders 6075 are annularly distributed on the side wall of the third side punching die base 6071 along the circumferential direction. The inner end of the third punch slide 6075 is provided with a third passive inclined surface 60751, the outer end of the third punch slide 6075 is provided with a third punch 6078, three third driving inclined surfaces 60771 are arranged on the third push rod 6077 corresponding to three third punch slides 6075, each third driving inclined surface 60771 is in transmission fit with the corresponding third passive inclined surface 60751, piston rods of three side punching oil cylinders 6074 correspond to the three third punches 6078 one by one, the piston rods of the side punching oil cylinders 6074 are provided with a punching female die 60741 and a third abdicating hole 60742 corresponding to the third punch 6078, and the third abdicating hole 60742 is positioned in the punching female die 60741. A third slide rail 6079 is arranged on the third driving inclined surface 60771, and the third punch slide 6075 is arranged on the third slide rail 6079 in a sliding manner. A third push rod 6077 position detection sensor 60721 for detecting the position of the third push rod 6077 is provided on the third push rod cylinder 6072. When the three-hole side punching mechanism 607 punches three holes on the tube body, the third push rod oil cylinder 6072 drives the third push rod 6077 to move upwards, three third driving inclined planes 60771 on the third push rod 6077 drive three third punch slide blocks 6075 and third punches 6078 thereon to move horizontally outwards, and the three third punches 6078 punch three holes on the side wall of the tube body simultaneously. After the third punch 6078 punches, the scrap is punched into the third escape hole 60742 and then discharged.

The horizontal feeding mechanism 604 comprises a plurality of horizontal feeding arms 6041, a second horizontal moving servo motor 6042 and a screw rod transmission pair 6043, the plurality of horizontal feeding arms 6041 are sequentially connected back and forth through joints, a second horizontal guide rail 60111 is arranged on the upper machine frame 6011, the plurality of horizontal feeding arms 6041 are slidably arranged on the second horizontal guide rail 60111, the second horizontal moving servo motor 6042 is in transmission connection with a screw rod of the screw rod transmission pair 6043, and the horizontal feeding arms 6041 are arranged on a sliding block of the screw rod transmission pair 6043. Because the multiple horizontal feeding arms 6041 of the tube side punching machine 60 are linked together, and the multiple horizontal feeding arms 6041 can simultaneously feed tubes and discharge tubes thereon, the horizontal feeding mechanism 604 can simultaneously synchronously feed tubes and synchronously discharge tubes thereon for the welding seam detection positioning mechanism 603, the preformed convex hull and small side punching hole mechanism 605, the convex hull forming and large side punching hole mechanism 606 and the three-hole side punching mechanism 607. Horizontal feeding arm 6041 includes slider 60411, lift cylinder 60412, die clamping cylinder 60413, second left clamping jaw 60414 and second right clamping jaw 60415, second left clamping jaw 60414, second right clamping jaw 60415 sets up respectively on die clamping cylinder 60413's both ends drive, die clamping cylinder 60413 sets up on lift cylinder 60412's cylinder pole, slider 60411 slides and sets up on second horizontal guide rail 60111, lift cylinder 60412 sets up on slider 60411, slider 60411 sets up on the slider. When the horizontal feeding mechanism 604 works, the second horizontal movement servo motor 6042 drives the plurality of horizontal feeding arms 6041 to synchronously slide along the second horizontal guide rail 60111 through the screw rod transmission pair 6043, and the lifting cylinder 60412 drives the clamping cylinder 60413 to move up and down so as to clamp and discharge the left clamping jaw and the right clamping jaw. The two driving ends of the clamping cylinder 60413 respectively drive the left clamping jaw and the right clamping jaw to clamp the pipe body or separate the pipe body to release the pipe body.

The pipe feeding positioning conveyor 602 is arranged on the feeding side of the lower base 6012; photoelectric sensors for detecting whether pipe bodies exist on the die holders are arranged beside the first side punching die holder 6053, the second side punching die holder 6062 and the third side punching die holder 6071, and if the photoelectric sensors detect that no pipe bodies exist on the side punching die holders, the oil cylinder 3032 cannot punch.

Further, the conduit medium frequency point welding machine 80 comprises a conduit vibration feeding disc 801, a material grabbing manipulator 802 and a resistance welding gun 803 which are sequentially arranged, wherein the conduit vibration feeding disc 801 is used for outputting a conduit inside the conduit vibration feeding disc, the material grabbing manipulator 802 is used for inserting the conduit into a hole formed in a pipe body, and the resistance welding gun 803 is used for welding the conduit and the pipe body.

A worker or a mechanical arm takes the punched pipe body and places the pipe body on a welding station of the medium frequency point welding machine; the intermediate frequency spot welding machine 80 of the guide pipe outputs the guide pipe one by one through the vibration of the guide pipe vibration feeding disc 801, then the material grabbing manipulator 802 conveys the guide pipe to the pipe body on the clamp, the guide pipe is inserted into a large hole of the pipe body and positioned, after the welding flux is manually loaded on the guide pipe, the resistance welding gun 803 of the middle frequency spot welding machine 80 of the guide pipe is started, and the resistance welding gun 803 starts to perform resistance welding on the guide pipe, so that the guide pipe is welded on the side wall of the pipe body. The bracket medium frequency point welding machine 70 is similar to the catheter medium frequency point welding machine 80 in structure and is used for welding the bracket on the pipe body; the gas shielded welding machine 110 is prior art and will not be described in detail herein.

Further, spray cleaning and drying equipment 130 is disposed between the pipe cutting machine 20 and the primary pipe expander 30 and between the brazing machine 90 and the secondary pipe expander 100, and an ultrasonic cleaning and drying equipment 140 is disposed at the rear end of the rack lathe 120.

After the pipe is cut from the pipe cutter 20, cleaning is required before the initial pipe expansion is performed to wash away dust, impurities and the like on the surface of the tank body; after cleaning, the pipe fitting still can be dried in the transportation, avoids the pipe fitting to have a large amount of water droplets when expanding the pipe. The spraying cleaning is to utilize a water inlet pipeline and a spray header, tap water enters the water inlet pipeline and then is sprayed out from the spray header, so that the pipe body is washed, and dust and the like on the surface of the pipe body are washed away. Similarly, the tube body is cleaned and dried by the spray cleaning and drying device 130 before the brazing is completed and the secondary tube expansion is performed. After the pipe body passes through the frame lathe 120, the punching and welding processing work of the compressor shell is completed, and then the manual full inspection is performed; the manual full inspection specifically comprises the steps of manually placing a workpiece in a die for inspection to judge whether the workpiece is qualified; after the manual detection is qualified, the workpiece is placed on the workpiece conveying line 10, and the workpiece is made to continue to move downwards. The workpiece which is qualified after the manual full inspection enters ultrasonic cleaning and drying equipment 140, and the pipe fitting is subjected to fine cleaning and drying in an ultrasonic cleaning mode so as to enable a finished product to be clean; and finally, packaging the workpiece.

Further, a feeding robot 150 is disposed between the pipe cutting machine 20 and the primary pipe expander 30.

The feeding robot 150 is disposed at a subsequent station of the pipe cutting machine 20, and when the spray cleaning and drying device 130 is disposed between the pipe cutting machine 20 and the primary pipe expander 30, the feeding robot 150 is specifically disposed between the pipe cutting machine 20 and the spray cleaning and drying device 130; the feeding robot 150 is used for conveying the pipe to be processed, which is cut by the pipe cutting machine 20, to the spray cleaning and drying device 130.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. Compressor robot intelligence welds dress production line, its characterized in that: the device comprises a workpiece conveying line (10), and a pipe cutting machine (20), a primary pipe expanding machine (30), a pipe fitting lathe (40), a height detection machine (50), a pipe body side punching machine (60), a bracket intermediate frequency spot welding machine (70), a guide pipe intermediate frequency spot welding machine (80), a brazing machine (90), a secondary pipe expanding machine (100), a gas shielded welding machine (110) and a frame lathe (120) which are sequentially arranged along the conveying direction of the workpiece conveying line (10);

the pipe cutting machine (20) is used for cutting the long-strip pipe material to form a pipe body;

the primary pipe expander (30) is used for primary pipe expansion of the pipe body;

the pipe fitting lathe (40) is used for turning the two ends of the pipe body;

the height detection machine (50) is used for detecting whether the height of the turned pipe body is qualified or not;

the tube body side punching machine (60) is used for punching the side wall of the tube body qualified in height detection;

the bracket intermediate frequency spot welding machine (70) is used for welding the bracket on the punched pipe body;

the guide pipe intermediate frequency spot welding machine (80) is used for welding the guide pipe on the side wall of the pipe body;

the brazing machine (90) is used for welding the guide pipe on the side wall of the pipe body;

the secondary pipe expander (100) is used for carrying out secondary pipe expansion on the pipe body;

the gas shielded welding machine (110) is used for welding the rack on the inner wall of the pipe body;

the frame lathe (120) is used for turning the end face of the frame extending out of the pipe body.

2. Compressor robot smart weld line according to claim 1, characterized in that the pipe cutter (20) comprises:

a cutting mechanism (201) for cutting the pipe;

the feeding mechanism (202) is positioned on one side where the discharging end of the cutting mechanism (201) is positioned, and a pipe fitting on the feeding mechanism (202) is over against the discharging end of the cutting mechanism (201);

the feeding mechanism (203) is positioned on one side of the feeding end of the cutting mechanism (201), the feeding mechanism (203) is provided with a guide rod (2031) used for limiting the pipe fittings, and the guide rod (2031) enables the pipe fittings to be right opposite to the feeding end of the cutting mechanism (201);

the limiting mechanism (204) is located on one side where the discharge end of the cutting mechanism (201) is located, and the limiting mechanism (204) is used for limiting the pipe fitting extending out of the discharge end of the cutting mechanism (201).

3. Compressor robot smart welding line according to claim 2, characterized in that said cutting mechanism (201) comprises:

the movable die (2011) is provided with a movable die cavity (20111) for the pipe fitting to penetrate through and is positioned at one side close to the discharge end of the cutting mechanism (201);

the fixed die (2012) is provided with a fixed die cavity (20121) communicated with the movable die cavity (20111), and the fixed die (2012) is attached to the movable die (2011) and is positioned on one side close to the feeding end of the cutting mechanism (201);

the movable mould (2011) can be attached and swung in the radial direction of the pipe fitting relative to the fixed mould (2012).

4. The compressor robot intelligent welding production line of claim 2, wherein the limiting mechanism (204) comprises a mounting seat (2041), a cylinder (2042), a connecting block (2043) and a stop rod (2044); the mounting seat (2041) is mounted on the cutting mechanism (201) through a connecting assembly (205); the cylinder (2042) is mounted on the mounting seat (2041); the connecting block (2043) is mounted on the output end of the cylinder (2042) and hinged with the mounting seat (2041); the stop rod (2044) is arranged on the connecting block (2043) and used for abutting against a pipe fitting extending out of the discharge end of the cutting mechanism (201).

5. The compressor robot intelligent welding production line according to claim 1, wherein the primary pipe expander (30) comprises a feeding manipulator (301), an alignment positioning device (302) and a pipe expanding device (303); the alignment positioning device (302) is arranged on one side of the pipe expanding device (303), and the feeding manipulator (301) is positioned above the alignment positioning device (302) and the pipe expanding device (303).

6. The compressor robot intelligent welding production line of claim 1, wherein the height detection machine (50) comprises a mounting frame (501), a detection positioning cylinder (502), a height detection plate (503), a measuring range cylinder (504) and a position sensor; the measuring range cylinder (504) and the plurality of detection positioning cylinders (502) are arranged on the mounting frame (501); the height detection plate (503) is arranged on the measuring range cylinder (504), and the measuring range cylinder (504) can drive the height detection plate (503) to lift; the position sensor is installed on the height detection plate (503), and the detection positioning air cylinder (502) is used for pushing the pipe body to align the position sensor.

7. The compressor robot intelligent welding production line of claim 1, wherein the pipe body side punching machine (60) comprises a main body frame (601), a pipe body feeding positioning conveyor (602), a welding seam detection positioning mechanism (603), a horizontal feeding mechanism (604), a pre-forming convex hull and side punching small hole mechanism (605), a convex hull forming and side punching large hole mechanism (606), a three-hole side punching mechanism (607) and a pipe body discharging conveyor (608);

the welding seam detection positioning mechanism (603) is arranged on the main body frame (601) and is used for detecting the position of a welding seam on the pipe body and rotationally positioning the pipe body, so that the rear punching mechanism can avoid the welding seam and avoid punching the welding seam to cause the pipe body to crack;

the horizontal feeding mechanism (604) is arranged at the upper part of the main body frame (601) and is used for conveying pipe bodies;

the preforming convex hull and side punching small hole mechanism (605) is arranged on the main body frame (601), is positioned below the horizontal feeding mechanism (604), and is used for preforming an initial convex hull on the outer side wall of the pipe body and punching a small hole on the initial convex hull;

the convex hull forming and side punching large hole mechanism (606) is arranged on the main body frame (601), is positioned below the horizontal feeding mechanism (604), and is used for shaping the initial convex hull into a formed convex hull and punching the small hole into a large hole;

the three-hole side punching mechanism (607) is arranged on the main body frame (601), is positioned below the horizontal feeding mechanism (604), and is used for punching three open holes on the outer side wall of the pipe body along the circumferential direction of the pipe body;

the pipe body feeding positioning conveyor (602) is used for conveying the pipe body to the welding seam detection positioning mechanism (603); and the pipe body discharging conveyor (608) is used for conveying the punched pipe bodies out.

8. The compressor robot intelligent welding production line of claim 1, wherein the guide pipe intermediate frequency spot welding machine (80) comprises a guide pipe vibration feeding disc (801), a material grabbing manipulator (802) and a resistance welding gun (803) which are arranged in sequence, the guide pipe vibration feeding disc (801) is used for outputting a guide pipe inside the guide pipe vibration feeding disc, the material grabbing manipulator (802) is used for inserting the guide pipe on a punched hole of a pipe body, and the resistance welding gun (803) is used for welding the guide pipe and the pipe body.

9. The compressor robot intelligent welding production line according to claim 1, wherein a spray cleaning and drying device (130) is arranged between the pipe cutting machine (20) and the primary pipe expander (30), a spray cleaning and drying device (130) is also arranged between the brazing machine (90) and the secondary pipe expander (100), and an ultrasonic cleaning and drying device (140) is arranged at the rear end of the rack lathe (120).

10. Compressor robot smart weld line according to claim 1, characterized in that a feeding robot (150) is provided between the pipe cutter (20) and the primary pipe expander (30).