CN115740687A

CN115740687A - Flame welding machine, welding method of air pipe and liquid storage tank body and compressor

Info

Publication number: CN115740687A
Application number: CN202211621035.8A
Authority: CN
Inventors: 叶钜文; 杨胜林; 王绪洲; 周纹乐; 韦华东
Original assignee: Dongguan Jinrui Hardware Co ltd
Current assignee: Dongguan Jinrui Hardware Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-03-07

Abstract

The invention relates to the technical field of flame brazing equipment, in particular to a flame welding machine, a welding method of an air pipe and a liquid storage tank body and a compressor. The flame welder comprises a frame, a first brazing device, a solder placing device, a second brazing device and a plurality of positioning tools; a station disc and a divider are arranged on the frame; a plurality of positioning tools are arranged on the station disc; the first brazing device and the second brazing device are arranged on the outer side of the station disc and are sequentially distributed along the rotation direction of the station disc, and the first brazing device and the second brazing device correspond to the positions of two adjacent positioning tools respectively; a lifting control part for driving the positioning tool to loosen and clamp the workpiece is arranged on the first brazing device; the solder placing device is arranged on the outer side of the second brazing device and is arranged on the frame. The welding method of the air pipe and the liquid storage tank body comprises the preheating of the air pipe. The compressor comprises the air pipe and the liquid storage tank body which are welded to form the assembly.

Description

Flame welding machine, welding method of air pipe and liquid storage tank body and compressor

Technical Field

The invention relates to the technical field of flame brazing equipment, in particular to a flame welding machine, a welding method of an air pipe and a liquid storage tank body and a compressor.

Background

Flame brazing is brazing by heating using a flame in which a combustible gas is mixed with oxygen (or compressed air) to be burned. Flame brazing and flame soldering. The flame brazing equipment is simple and convenient to operate, and multiple flames can be used for heating and welding simultaneously according to the shape of a workpiece. The method is suitable for welding middle and small parts of bicycles, electric bicycle frames, aluminum water bottle spouts and the like.

The utility model discloses a utility model with publication number CN208879883U discloses a welding equipment of brazing of eight station upsets flames of reservoir, this welding equipment of brazing of eight station upsets flames of reservoir is through setting up manual material loading station, detect the station, preheat the station, the heat-welding station, the station is preheated in the upset, the automatic weld of reservoir is realized to cooling station and unloading station, it should understand according to the description record content, should preheat work and be used for carrying out the primary heating to the reservoir, it is long when the welding of welding station is shortened to the work of should preheating, improve welding efficiency. However, in the prior art, there are two types of air pipes used for connecting with the liquid storage tank, specifically, there are two types of air pipes made of steel (see utility model patent publication No. CN 216897931U) and a composite air pipe made of a steel straight pipe and a copper bent pipe (see invention patent publication No. CN 102338517B), see fig. 1, the connection structure of the steel air pipe and the liquid storage tank is shown, which is shielded by the liquid storage tank, the fire nozzle can only heat the heat transfer portion 100 of the steel pipe exposed outside the liquid storage tank, so that the heat is transferred to the contact portion 200 of the air pipe contacting with the liquid storage tank, the solder is completely infiltrated, the welding quality is improved, and heat loss exists in the process, therefore, the heat of the heat transfer portion 100 is much larger than that of the contact portion 200 in the processing process, and the heat transfer portion 100 is easily oxidized due to over-high temperature, so that the connection between the paint coat and the heat transfer portion is not firm during paint spraying. Referring to fig. 2, the drawing is a connecting structure of the straight steel pipe, the bent copper pipe and the liquid storage tank body, and is also shielded by the liquid storage tank body, the burner can only heat the tops of the bent copper pipe and the straight steel pipe, the downward heat transfer efficiency of the straight steel pipe is low in the process, the straight steel pipe needs to be heated for a long time in order to ensure that the solder is completely melted and infiltrated, but when the flame heating time is too long, the temperature of the bent copper pipe is too high, so that the crystallization size of the copper pipe is easily changed, the copper pipe is further easily broken, and the service life is shortened.

Therefore, it is necessary to provide a technical solution to solve the above problems.

Disclosure of Invention

The invention provides a flame welding machine, a welding method of an air pipe and a liquid storage tank body and a compressor, and aims to solve the problems that when an existing steel pipe is welded with the liquid storage tank body, an oxidation film is prone to appearing on the surface of the steel air pipe, and when a straight steel pipe, a bent copper pipe and the liquid storage tank body are welded, the grain size of the copper pipe is prone to changing, so that the copper pipe is prone to breaking, and the service life is shortened.

In order to achieve the purpose, the invention provides a flame welding machine which comprises a rack, a first brazing device, a solder placing device, a second brazing device and a plurality of positioning tools, wherein the first brazing device is arranged on the rack; wherein:

the rack is provided with a station disc and a divider for driving the station disc to rotate;

the positioning tools are arranged on the station disc in a circumferential array; the positioning tool comprises a support, a fixed seat and a lifting seat; the bracket and the fixed seat are both arranged on the station disc; the lifting seat is arranged above the fixed seat and is in sliding connection with the bracket;

the first brazing device and the second brazing device are arranged on the outer side of the station disc and are sequentially distributed along the rotation direction of the station disc, and the first brazing device and the second brazing device respectively correspond to the positions of two adjacent positioning tools; the first brazing device is provided with a lifting control piece for driving the lifting seat to move up and down;

the solder placing device is arranged on the outer side of the second brazing device and is installed on the rack.

More specifically, the first brazing device and the second brazing device have the same structure and respectively comprise a movable frame, a welding gun and a first driving piece; the movable frame is connected to the rack in a sliding manner; the welding gun is arranged on one side of the movable frame close to the station disc; the first driving piece is arranged on the rack and used for driving the movable frame to move close to or far away from the station disc; the lifting control piece is installed on a movable frame of the first brazing device and used for driving the lifting seat to be lifted upwards when the movable frame moves to a position close to one side of the station disc.

More specifically, the lifting control member comprises a triangular top plate; the triangular top plate is fixedly connected to one side, close to the station disc, of the movable frame.

More specifically, the middle of the fixing seat is provided with an air guide pipe, and the air guide pipe is connected with a nitrogen distributor.

More specifically, the solder placing device comprises a mounting column, a lifting adjusting seat, a rotating adjusting seat, a moving seat, a second driving piece and a feeding pipe; the mounting column is mounted on the frame; the lifting adjusting seat is arranged on the mounting column; the rotary adjusting seat is arranged on the lifting adjusting seat; the movable seat is connected with the rotary adjusting seat in a sliding manner; the second driving piece is arranged on the rotary adjusting seat and used for driving the moving seat to slide; the feed pipe is installed on the removal seat.

More specifically, a cooling device is arranged on the outer side of the station disc; the cooling device is arranged on one side, far away from the first brazing device, of the second brazing device and is installed on the rack.

The flame welding machine related by the invention has the technical effects that:

this application has add the lift control for eight station upset flame brazing welding equipment now, preheats the during operation when first brazing device, drives the ascending lifting seat of lift seat by the lift control, and can make the different height of lifting seat lifting through the adjustment to the lift control, and then makes first brazing device preheat the contact site of steel pipe or to steel straight tube and the stock solution jar body to this reduces the thermal scattering and disappearing when second brazing device heats the welding by a wide margin. Therefore, when the steel pipe is welded with the liquid storage tank body, the surface of the steel pipe is not easy to generate an oxidation film, the connection fastening performance of the paint layer and the steel pipe is improved, and when the steel straight pipe, the copper bent pipe and the liquid storage tank body are welded, the crystal granularity of the copper pipe is not easy to change, the strength and the toughness of the copper pipe are ensured, and the service life of the copper pipe is prolonged.

A welding method of an air pipe and a liquid storage tank body is characterized in that the air pipe is a steel pipe, and the steel pipe and the liquid storage tank body are installed on a flame welding machine for processing; the method comprises the following operation steps:

s1, cleaning a steel pipe and a liquid storage tank body, removing surface oil stains, rusting and other defects, and drying;

s2, fixing the steel pipe to the lifting seat, fixing the liquid storage tank body to the fixed seat, and enabling the steel pipe and the liquid storage tank body to be in centering fit;

s3, driving the station disc to rotate by the divider, and moving the positioning tool clamped with the steel pipe and the liquid storage tank body to a processing area of the first brazing device;

s4, controlling the lifting seat to move upwards by 5-8mm by using a lifting control piece, and preheating the steel pipe by using a first brazing device;

s5, after the preheating work is finished, the lifting control piece removes the control on the lifting seat to reset the lifting seat, and then the divider drives the station disc to rotate so that the positioning tool in situ in the processing area of the first brazing device moves to the processing area of the second brazing device;

s6, filling the solder in the gap between the steel pipe and the liquid storage tank body by using a solder placing device, and heating the joint of the steel pipe and the liquid storage tank body by using a second brazing device;

s7, after the solder is completely melted, the divider drives the station disc to rotate, so that the positioning tool in situ in the processing area of the first brazing device enters the next station, and after the solder is cooled and solidified, the steel pipe is fixedly connected with the liquid storage tank body to form a combined part;

s8, taking out the assembly.

More specifically, the preheating time of the first brazing device to the steel pipe in the step S4 is 12S-16S; and in the step S6, the second brazing device is heated at the joint of the steel pipe and the liquid storage tank body for 12-16S.

The welding method of the air pipe and the liquid storage tank body has the technical effects that:

the utility model provides a centre gripping has steel pipe and the location frock of the liquid storage tank body in first brazing device's processing district, drive the steel pipe upwards lifting 5mm-8mm through the lift control piece, even the contact site of steel pipe and the liquid storage tank body extends the outside of the liquid storage tank body, make first brazing device preheat the contact site earlier, thus, when second brazing device carries out the heat welding work, can effectively improve the heat conduction speed of steel pipe, reduce thermal heat dissipation, the length of time that the heat transfer portion need heat has been shortened, thereby avoid the heat transfer portion of steel pipe to lead to the oxide film to appear in the heat transfer portion surface of steel pipe because of long-time flame heating.

A welding method of an air pipe and a liquid storage tank body is disclosed, wherein the air pipe comprises a steel straight pipe and a copper bent pipe; mounting the copper bent pipe, the steel straight pipe and the liquid storage tank body on the flame welding machine for processing; the method comprises the following operation steps:

s1, cleaning a copper bent pipe, a steel straight pipe and a liquid storage tank body, removing surface oil stains, rusting and other defects, and drying;

s2, fixing the copper bent pipe to the lifting seat, installing the steel straight pipe into the liquid storage tank body, fixing the liquid storage tank body to the fixing seat, and enabling the copper bent pipe and the liquid storage tank body to be matched in a centering mode;

s3, driving the station disc to rotate by the divider, and moving the positioning tool provided with the copper bent pipe, the steel straight pipe and the liquid storage tank body to a processing area of the first brazing device;

s4, controlling the lifting seat to move upwards by 20-60 mm by the lifting control part, and preheating the joint of the straight steel pipe and the liquid storage tank body by the first brazing device;

s6, filling the solder in the gap between the straight steel pipe and the liquid storage tank body and the gap between the straight steel pipe and the copper bent pipe by using a solder placing device, and heating and melting the solder between the straight steel pipe and the copper bent pipe and the solder between the straight steel pipe and the liquid storage tank body by using a second brazing device;

s7, after the solder is completely melted, the divider drives the station disc to rotate, so that the positioning tool originally positioned in the processing area of the second brazing device enters the next station, and after the solder is cooled and solidified, the straight steel pipe is fixedly connected with the liquid storage tank body to form a combined part;

and S8, taking out the assembly.

More specifically, in the step S4, the preheating time of the first brazing device to the joint of the straight steel pipe and the liquid storage tank body is 12-16S; and in the step S6, the second brazing device heats and melts the welding materials between the straight steel pipe and the copper bent pipe and between the straight steel pipe and the liquid storage tank body for 12-16S.

the location frock that centre gripping held copper return bend and the stock solution jar body in this application is in first brazing device's processing district, it upwards lifts 30mm-50mm to drive the copper return bend through lift control spare, even the stock solution jar body and steel straight tube are kept away from to the copper return bend, make first brazing device can preheat the stock solution jar body and steel straight tube earlier, so, when second brazing device carries out the heat-welding work, can effectively improve the heat conduction velocity of steel straight tube, reduce thermal heat dissipation, shorten the length of time that the copper return bend needs the heating, thereby avoid the copper return bend to lead to the crystallization grain size to change because of long-time flame heating, make copper pipe keep stable in structure, the service life thereof is prolonged.

A compressor comprises a liquid storage device, wherein the liquid storage device comprises an assembly processed by the welding method of the air pipe and a liquid storage tank body.

Drawings

FIG. 1 is a diagram of a connecting structure of a steel gas pipe and a liquid storage tank body in the prior art;

FIG. 2 is a diagram of a connection structure of a straight steel pipe, a bent copper pipe and a liquid storage tank in the prior art;

FIG. 3 is a top plan view of a flame welder in accordance with the present invention;

FIG. 4 is a schematic structural view of a flame welding machine according to the present invention;

FIG. 5 is a schematic view of a first brazing apparatus in a flame welding machine according to the present invention;

FIG. 6 is a schematic view of a solder placement apparatus for a flame welding machine according to the present invention;

FIG. 7 is a schematic structural view of a positioning tool in a flame welding machine according to the present invention;

fig. 8 is an enlarged schematic view at a in fig. 7.

The labels in the figure are:

1, a frame; 2-a first brazing device; 3-solder placement device; 4-a second brazing device; 5, positioning a tool; 6-lifting control member;

11-a cylinder;

21-a movable frame; 22-a welding gun; 23 — a first driving member; 24-a lifting adjusting mechanism; 241, guide pillars; 242 — a fixing plate; 243, adjusting plate; 244-screw;

31-mounting a column; 32-lifting adjusting seat; 33-rotating the adjusting seat; 34-a movable seat; 35 — a second driving member; 36-a feed pipe; 37-a regulating block;

51-a support; 511-a backplane; 512-top plate; 513 — a pillar; 514-rotating the wheel; 515-a balancing weight; 516 — a sliding plate; 517-support column; 52-a fixed seat; 521-a receiving groove; 522-lifting the plate; 523-connecting column; 53-lifting seat; 531-slide block; 532-limiting rod; 533-locating column; 534-clamping block; 535-lever;

61-triangular top plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

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

In the description of the embodiments of the present invention, it should be understood that the orientations and positional relationships indicated by the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are based on the orientations and positional relationships shown in the drawings and are only for convenience in describing the embodiments of the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In order to more clearly illustrate the technical solution of the present invention, the following preferred examples are provided below.

Example one

A flame welding machine comprises a frame 1, a first brazing device 2, a solder placing device 3, a second brazing device 4 and a plurality of positioning tools 5; wherein:

a station disc and a divider for driving the station disc to rotate are mounted on the rack 1;

the positioning tools 5 are arranged on the station disc in a circumferential array; the positioning tool 5 comprises a bracket 51, a fixed seat 52 and a lifting seat 53; the bracket 51 and the fixed seat 52 are both arranged on the station disc; the lifting seat 53 is arranged above the fixed seat 52 and is connected with the bracket 51 in a sliding manner;

the first brazing device 2 and the second brazing device 4 are arranged on the outer side of the station disc and are sequentially arranged along the rotation direction of the station disc, and the first brazing device 2 and the second brazing device 4 respectively correspond to the positions of two adjacent positioning tools 5; the first brazing device 2 is provided with a lifting control part 6 for driving the lifting seat 53 to move up and down;

the solder placing device 3 is arranged outside the second brazing device 4 and is mounted on the frame 1.

Compared with the existing eight-station turnover flame brazing welding equipment, the flame welding machine related in the embodiment is additionally provided with the lifting control piece 6, when the first brazing device 2 is preheated, the lifting control piece 6 drives the lifting seat 53 to be lifted upwards, the lifting seat 53 can be lifted to different heights by adjusting the lifting control piece 6, and then the first brazing device 2 is enabled to preheat the contact part 200 of a steel pipe or the steel pipe and a liquid storage tank body, so that the heat loss during heating welding of the second brazing device 4 is greatly reduced. So, when can making steel pipe and the welding of the liquid storage tank body, the difficult oxide film that appears in steel pipe surface improves the connection fastening nature of lacquer layer and steel pipe, also can make steel straight tube, copper return bend and the welding of the liquid storage tank body, and the difficult production of the grain size of copper pipe changes, ensures the obdurability of copper pipe, improves its life.

As a preferable solution of this embodiment, the bracket 51 includes a bottom plate 511, a top plate 512 and a plurality of pillars 513; the plurality of supporting columns 513 are arranged between the bottom plate 511 and the top plate 512, and two ends of each supporting column are respectively and fixedly connected with the bottom plate 511 and the top plate 512;

the lifting seat 53 comprises a sliding block 531, a limiting rod 532, a positioning column 533, a clamping block 534 and a lever 535; the sliding block 531 is slidably connected to the support 513; the limiting rod 532 is arranged at the bottom of the sliding block 531; the positioning column 533 is installed on the slider 531; the clamping block 534 is arranged above the positioning column 533, is connected with the sliding block 531 in a sliding manner, and can perform lifting and sliding, and a clamping groove is formed in the bottom of the clamping block 534; the lever 535 is arranged above the clamping block 534, is rotatably connected with the sliding block 531, and is connected with the clamping block 534 through a connecting sheet; a rotating wheel 514 is installed on the top plate 512, a balancing weight 515 is connected to the support 513 in a sliding manner, and a transmission rope is connected to the balancing weight 515, is wound around the rotating wheel 514 and is connected with the sliding block 531;

the fixing seat 52 has a receiving groove 521 formed in the middle thereof.

Specifically, the air tube of the liquid reservoir is sleeved outside the positioning column 533, and then the worker drives the lever 535 to press down, so that the clamping block 534 moves downward to clamp the air tube; then, the worker drives the sliding block 531 to lift, so that the liquid storage tank body is placed in the accommodating groove 521, and then the sliding block 531 is controlled to descend, so that the air pipe is inserted into the liquid storage tank body to complete assembly; under the action of gravity, the limiting rod 532 abuts against the bottom plate 511, and then the air pipe is stably connected with the liquid storage tank body. It should be noted that, the weight of the lifting seat 53 is too large, so that the arrangement of the counterweight block 515 reduces the difficulty of the worker lifting the lifting seat 53.

Preferably, a sliding plate 516 is slidably connected to the supporting column 513, and a supporting column 517 penetrating through the bottom plate 511 is disposed at the bottom of the sliding plate 516; when the sliding block 531 is not driven by an external force, the limiting rod 532 contacts with the sliding plate 516; a lifting plate 522 is arranged in the accommodating groove 521 of the fixed seat 52, a connecting column 523 penetrating through the fixed seat 52 is arranged at the bottom of the lifting plate 522, and the connecting column 523 is fixedly connected with the sliding plate 516; the liquid storage device taking-out station of the flame welding machine is provided with a cylinder 11, the cylinder 11 is arranged below the station disc and is installed on the rack 1, and the output end of the cylinder is provided with a push plate. It should be noted that, after the liquid storage tank body and the air pipe are welded, the temperature of the top of the liquid storage tank body is too high, and it cannot be ensured that the temperature of the top of the liquid storage tank body moving to the taking-out station can reach room temperature, so in this embodiment, the sliding plate 516 on the positioning tool 5 moving to the taking-out station is jacked up by the air cylinder 11, so that the liquid storage tank body is jacked out of the accommodating groove 521 of the fixing seat 52, a worker can conveniently grab the bottom of the liquid storage tank body, and further, the worker is ensured not to be scalded, and potential safety hazards are eliminated.

As a preferable scheme of the present embodiment, the first brazing device 2 and the second brazing device 4 have the same structure, and each includes a movable frame 21, a welding gun 22, and a first driving member 23; the movable frame 21 is connected to the frame 1 in a sliding manner; the welding gun 22 is arranged on one side of the movable frame 21 close to the station disc; the first driving piece 23 is mounted on the frame 1 and is used for driving the movable frame 21 to move close to or away from the station disc; the lifting control member 6 is installed on the movable frame 21 of the first brazing device 2, and is used for driving the lifting seat 53 to be lifted upwards when the movable frame 21 moves to a side close to the station disc. Specifically, when the first brazing device 2 performs preheating work or the second brazing device 4 performs heating welding work, the first driving piece 23 drives the movable frame 21 to move to one side close to the station disc until the welding gun 22 is distributed outside a welding position corresponding to the liquid accumulator; when the first brazing device 2 is used for preheating, the lifting control part 6 drives the lifting seat 53 to lift upwards, so as to control the first brazing device 2 to preheat a specific position.

As a preferable solution of the present embodiment, the lifting control member 6 includes a triangular top plate 61; the triangular top plate 61 is fixedly connected to one side of the movable frame 21 close to the station disc. When the movable frame 21 moves towards one side close to the station disc, the triangular top plate 61 slides towards one side close to the station disc, and the lifting seat 53 is jacked upwards under the support of the slope surface of the triangular top plate 61, so as to drive the air pipe to be lifted upwards. The height of the triangular top plate 61 that is raised with respect to the lifting base 53 can be changed by adjusting the position thereof.

Preferably, a pulley is mounted on the lifting seat 53. Through the pulley with the cooperation of triangle roof 61 improves triangle roof 61 is right the smoothness degree of lift seat 53 control, and reduces frictional resistance and wearing and tearing.

As a preferable scheme of this embodiment, an air duct is installed in the middle of the fixing base 52, and the air duct is connected with a nitrogen gas distributor. The nitrogen distributor is used for inputting nitrogen into the liquid storage tank body along the air guide pipe, so that oxygen in the liquid storage tank body is discharged, and the inner surface of the liquid storage tank body or the inner surface of the air pipe are prevented from being oxidized due to temperature. Specifically, when the flame welding machine works, the consumed nitrogen is 1000m3/h-2000m3/h.

As a preferable scheme of the present embodiment, the solder placing device 3 includes a mounting column 31, a lifting adjusting seat 32, a rotating adjusting seat 33, a moving seat 34, a second driving member 35 and a feeding pipe 36; the mounting column 31 is mounted on the frame 1; the lifting adjusting seat 32 is mounted on the mounting column 31; the rotary adjusting seat 33 is mounted on the lifting adjusting seat 32; the moving seat 34 is connected with the rotary adjusting seat 33 in a sliding manner; the second driving element 35 is mounted on the rotary adjusting seat 33 and is used for driving the moving seat 34 to slide; the feed tube 36 is mounted on the movable seat 34. The feed tube 36 is in communication with an external solder supply so that the solder can be continuously filled. Specifically, the welding positions of the liquid reservoirs with different specifications mounted on the positioning tool 5 are also different, so in this embodiment, the lifting adjusting seat 32 and the rotating adjusting seat 33 are additionally provided, the height of the feeding pipe 36 can be adjusted by the lifting adjusting seat 32, the feeding angle of the feeding pipe 36 can be adjusted by the rotating adjusting seat 33, and the solder placing device 3 can supply solder for the liquid reservoirs with different specifications.

Preferably, the moving seat 34 is provided with an adjusting block 37, the adjusting block 37 is provided with an arc-shaped hole, and the adjusting block 37 is fixed on the moving seat 34 through the cooperation of a bolt and the arc-shaped hole; the feed pipe 36 is fixedly connected to the adjusting block 37. Specifically, the feeding position of the feeding pipe 36 in the horizontal direction can be changed by adjusting the relative position of the arc-shaped hole and the bolt, so that the feeding requirements of liquid reservoirs with different widths can be met.

Preferably, the movable frame 21 is provided with a lifting adjusting mechanism 24; the lifting adjusting mechanism 24 comprises a plurality of guide posts 241, a fixing plate 242, an adjusting plate 243 and a screw 244; the guide posts 241 are vertically arranged and fixedly connected to the movable frame 21, and the fixing plate 242 is fixedly connected to the tops of the guide posts 241; the adjusting plate 243 is slidably connected with the guide post 241; the screw 244 is parallel to the guide post 241, two ends of the screw are respectively rotatably connected to the fixed plate 242 and the movable frame 21, and the adjusting plate 243 is in threaded connection with the screw 244; an adjusting hand wheel is arranged above the fixing plate 242 and fixedly connected with the screw 244; the welding gun 22 is mounted on the adjustment plate 243. Specifically, the height of the welding gun 22 can be adjusted by the lifting adjusting mechanism 24, so that welding of liquid accumulators with different specifications is met.

As a preferable scheme of the embodiment, a cooling device is further arranged on the outer side of the station disc; the cooling device is arranged on one side of the second brazing device 4 far away from the first brazing device 2 and is arranged on the frame 1. Specifically, the liquid storage device formed by heating and welding the second brazing device 4 is driven to the processing area of the cooling device by the divider, and the cooling device sends cold air to cool the liquid storage device, so that the cooling time is shortened, and the subsequent working personnel can take out the liquid storage device conveniently.

Example two

A welding method of an air pipe and a liquid storage tank body is characterized in that the air pipe is a steel pipe, and the steel pipe and the liquid storage tank body are installed on a flame welding machine recorded in the first embodiment for processing; the method comprises the following operation steps:

s2, fixing the steel pipe to the lifting seat 53, fixing the liquid storage tank body to the fixed seat 52, and enabling the steel pipe and the liquid storage tank body to be matched in a centering mode;

s3, driving the station disc to rotate by the divider, and moving the positioning tool 5 clamped with the steel pipe and the liquid storage tank body to a processing area of the first brazing device 2;

s4, controlling the lifting seat 53 to move upwards by 5-8mm by the lifting control piece 6, and preheating the steel pipe by the first brazing device 2;

s5, after the preheating operation is finished, the lifting control piece 6 removes the control on the lifting seat 52, so that the lifting seat 52 is reset, and the divider drives the station disc to rotate, so that the positioning tool in the processing area of the first brazing device 2 in situ moves to the processing area of the second brazing device 4;

s6, filling the solder in the gap between the steel pipe and the liquid storage tank body by the solder placing device 3, and heating the joint of the steel pipe and the liquid storage tank body by a second brazing device;

s7, after the solder is completely melted, the work station disc is driven to rotate by the divider, so that the positioning tool 5 in situ in the processing area of the first brazing device 2 enters the next work station, and after the solder is cooled and solidified, the steel pipe is fixedly connected with the liquid storage tank body to form a combined part;

and S8, taking out the assembly.

In this embodiment, the positioning tool holding the steel pipe and the liquid storage tank is disposed in the processing area of the first brazing device 2, and the steel pipe is driven by the lifting control member 6 to be lifted up by 5mm to 8mm, so that the first brazing device 2 can preheat the contact portion 200 of the steel pipe even if the contact portion 200 of the steel pipe and the liquid storage tank extends to the outside of the liquid storage tank, thereby effectively increasing the heat transfer rate of the steel pipe, reducing the dissipation of heat, and shortening the heating time required by the heat transfer portion 100, so as to prevent the heat transfer portion 100 of the steel pipe from generating an oxide film on the surface of the heat transfer portion 100 of the steel pipe due to long-time flame heating. It should be noted that, when the steel tube lifting height is within the range of 5mm to 8mm, it can be ensured that the first brazing device 2 can accurately preheat the contact portion 200 of the steel tube, and when the lifting heights of a plurality of steel tubes are outside the above range, the contact portion 200 of the steel tube cannot be completely preheated, and further in the subsequent welding process, the heat transfer portion 100 of the steel tube may still be heated until an oxide film appears, and the contact portion 200 of the steel tube may reach a predetermined temperature, so that the complete infiltration of the solder is realized.

Further, in the present embodiment, there is an interval time of 2S to 5S between the preheating in step S4 and the heat welding in step S6.

Further, in the embodiment, when the first brazing device 2 preheats the steel pipes, the angle between the welding gun 22 and the central axis of the liquid storage tank body is 30-50 degrees; when the second brazing device 4 is used for heating and welding, the distance between the welding gun 22 and the central axis of the liquid storage tank body is 30-50 degrees. It should be noted that the welding gun 22 is arranged at the above-mentioned angle, so that the flame at the spraying position of the welding gun 22 is located at the gap between the steel pipe and the liquid storage tank body to heat and melt the solder, and if the angle formed between the welding gun 22 and the central axis of the liquid storage tank body exceeds the above-mentioned range, the flame sprayed by the welding gun 22 is easily blocked by the liquid storage tank body or the air pipe, which causes the solder not to be completely melted, and affects the welding quality.

Further, in the present embodiment, the second brazing device 4 in step S6 heats the steel pipe to 780 ℃ to 850 ℃. It should be noted that, the low temperature of the steel pipe may cause the solder to be unable to be melted and infiltrated completely, which affects the welding quality, and the high temperature of the steel pipe may cause the surface of the steel pipe to be melted and even cause the hole to be punched.

As a preferable scheme of the present embodiment, the preheating time of the first brazing device 2 to the steel pipe in the step S4 is 12S to 16S; it should be noted that, when the preheating time of the first brazing device 2 to the steel pipe is too short, the steel pipe cannot be preheated to the predetermined temperature, so that when the subsequent second brazing device 4 heats the heat transfer portion 100 of the steel pipe, the contact portion 200 cannot reach the welding temperature, the solder cannot be melted down well, and the welding quality is affected, otherwise, when the preheating time of the first brazing device 2 to the steel pipe is too long, the surface of the steel pipe is easily melted. And in the step S6, the second brazing device 4 is heated at the joint of the steel pipe and the liquid storage tank body for 12-16S. When the heating time of the steel pipe by the second brazing apparatus 4 is too short, the steel pipe cannot be heated to the above temperature standard, whereas when the heating time is too long, the temperature of the steel pipe becomes too high, and the surface of the steel pipe may melt.

Further, the time required for the second brazing device 4 to heat and melt the welding wire is 5s to 8s. When the heating time of the second soldering apparatus 4 is too short, the solder cannot be completely melted and infiltrated, and when the soldering time is too long, the solder is likely to excessively infiltrate.

In a preferred embodiment of the present invention, the welding gas used in the first brazing device 2 is natural gas and oxygen, wherein the natural gas is 8KPa to 16KPa, and the oxygen is 20KPa to 40KPa.

In a preferred embodiment of the present invention, the welding gas used by the second brazing device 4 is natural gas and oxygen, wherein the natural gas is 8KPa to 16KPa, and the oxygen is 25KPa to 45KPa.

As a preferable scheme of the present embodiment, the solder placing device 3 inputs solder for a period of time of 4s to 7s.

EXAMPLE III

s2, fixing the copper bent pipe to the lifting seat 53, installing the steel straight pipe into the liquid storage tank body, fixing the liquid storage tank body to the fixing seat 52, and enabling the copper bent pipe and the liquid storage tank body to be matched in a centering mode;

s3, the divider drives the station disc to rotate, so that the positioning tool provided with the copper bent pipe, the steel straight pipe and the liquid storage tank body moves to a processing area of the first brazing device 2;

s4, controlling the lifting seat 53 to move upwards by 20-60 mm by the lifting control part 6, and preheating the joint of the straight steel pipe and the liquid storage tank body by the first brazing device 2;

s5, after the preheating work is finished, the lifting control piece 6 removes the control on the lifting seat to reset the lifting seat 53, and then the divider drives the station disc to rotate to enable the positioning tool in the processing area of the first brazing device 2 to move to the processing area of the second brazing device 4;

s6, filling the solder in the gap between the straight steel pipe and the liquid storage tank body and the gap between the straight steel pipe and the copper bent pipe by the solder placing device 3, and heating and melting the solder between the straight steel pipe and the copper bent pipe and the solder between the straight steel pipe and the liquid storage tank body by the second brazing device 4;

s7, after the solder is completely melted, the divider drives the station disc to rotate, so that the positioning tool originally positioned in the processing area of the second brazing device 4 enters the next station, and after the solder is cooled and solidified, the straight steel pipe is fixedly connected with the liquid storage tank body to form a combined part;

and S8, taking out the assembly.

In this embodiment, the location frock 5 of the centre gripping copper return bend and the stock solution jar body is in first brazing device 2's processing district, drive the copper return bend 20mm-60mm of upwards lifting through lift control 6, even the stock solution jar body and steel straight tube are kept away from to the copper return bend, make first brazing device 2 preheat the stock solution jar body and steel straight tube earlier, so, when second brazing device 4 carries out the heating welding work, can effectively improve the heat conduction speed of steel straight tube, reduce thermal scattering and disappearing, it is long when having shortened the required heating of copper return bend, with this messenger's copper pipe hold stable in structure, avoid the copper return bend to lead to the crystallization size to change because of long-time flame heating, and then improved the life of copper return bend. It should be noted that, when the copper elbow lifting height was crossed lowly, easily receive the flame influence that welder jetted and produce temperature variation, and then influence subsequent normal welding work, and when the copper elbow lifting height was too high, then too high to the requirement of lift control 6, improved lift control 6's the processing degree of difficulty.

As a preferable scheme of this embodiment, the preheating time of the first brazing device 2 at the joint of the straight steel pipe and the liquid storage tank body in step S4 is 12S to 16S; it should be noted that, when the preheating time of the first brazing device 2 to the joint of the straight steel pipe and the liquid storage tank is too short, the joint of the straight steel pipe and the liquid storage tank cannot be preheated to a predetermined temperature, so that the subsequent second brazing device 4 cannot heat the straight steel pipe and the liquid storage tank to a welding temperature, and solder cannot be well melted down to affect welding quality, otherwise, when the preheating time of the first brazing device 2 to the joint of the straight steel pipe and the liquid storage tank is too long, the surface of the straight steel pipe or the liquid storage tank is easily melted. In the step S6, the time for heating and melting the welding flux between the straight steel pipe and the copper bent pipe and the welding flux between the straight steel pipe and the liquid storage tank body by the second brazing device 4 is 12-16S. It should be noted that, when the heating time of the second brazing device 4 to the joint of the straight steel pipe and the liquid storage tank is too short, both the straight steel pipe and the liquid storage tank cannot be heated to the welding temperature, or conversely, if the heating time is too long, the temperature of the straight steel pipe and the liquid storage tank is too high, and the surface of the straight steel pipe or the surface of the liquid storage tank is easily melted.

Further, the time required for the second brazing device 4 to heat and melt the welding wire is 5s-8s. When the heating time of the second soldering apparatus 4 is too short, the solder cannot be completely melted and infiltrated, and when the soldering time is too long, the solder is likely to excessively infiltrate.

Further, in the embodiment, when the first brazing device 2 preheats the steel pipes, the angle between the welding gun 22 and the central axis of the liquid storage tank body is 30-50 degrees; when the welding gun 22 and the central shaft of the liquid storage tank body are heated and welded by the second brazing device 4, it should be noted that the angle between the welding gun 22 and the central shaft of the liquid storage tank body is 30-50 degrees, and it should be noted that the welding gun 22 is arranged at the angle, so that the flame at the spraying position of the welding gun 22 is positioned at the gap between the steel pipe and the liquid storage tank body to heat and melt the solder, and if the angle formed between the welding gun 22 and the central shaft of the liquid storage tank body exceeds the range, the flame sprayed by the welding gun 22 is easily blocked by the liquid storage tank body or the air pipe, so that the solder cannot be completely melted, and the welding quality is affected.

Further, in the present embodiment, the second brazing apparatus 4 in step S6 heats the copper bent pipe to 730 ℃ -780 ℃. It should be noted that, the low temperature of the copper tube may cause the solder to be unable to be melted and infiltrated completely, which affects the welding quality, and when the temperature of the copper tube is too high, the surface melting of the copper tube, even the perforation, may occur easily.

In a preferred embodiment of the present invention, the first brazing apparatus 2 may employ a heating rod instead of the welding torch 22 to preheat the joint between the straight steel pipe and the liquid storage tank. Specifically, the heating rod consumes less energy, is more environment-friendly, and has higher safety compared with a welding gun for spraying flame.

Example four

A compressor comprises a liquid storage device, wherein the liquid storage device comprises an assembly processed by the welding method of the air pipe and the liquid storage tank body in the second embodiment or the third embodiment.

According to the flame welding machine, the welding method of the air pipe and the liquid storage tank body and the compressor, the problems that an oxidation film is prone to appearing on the surface of the steel air pipe when an existing steel pipe is welded with the liquid storage tank body, and the grain size of the copper pipe is prone to changing when a straight steel pipe, a bent copper pipe and the liquid storage tank body are welded, so that the copper pipe is prone to cracking, and the service life is shortened are solved through reasonable structural arrangement.

The above description is only exemplary of the present invention, and the structure is not limited to the above-mentioned shapes, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flame welder, characterized by: the device comprises a rack, a first brazing device, a solder placing device, a second brazing device and a plurality of positioning tools; wherein:

2. A flame welder as set forth in claim 1, wherein: the first brazing device and the second brazing device are identical in structure and respectively comprise a movable frame, a welding gun and a first driving piece; the movable frame is connected to the rack in a sliding manner; the welding gun is arranged on one side of the movable frame close to the station disc; the first driving piece is arranged on the rack and used for driving the movable frame to move close to or far away from the station disc; the lifting control piece is installed on a movable frame of the first brazing device and used for driving the lifting seat to be lifted upwards when the movable frame moves to a position close to one side of the station disc.

3. A flame welder as set forth in claim 2, wherein: the lifting control member comprises a triangular top plate; the triangular top plate is fixedly connected to one side, close to the station disc, of the movable frame.

4. A flame welder as set forth in claim 1, wherein: the fixing base mid-mounting has the air duct, the air duct is connected with the nitrogen gas distributor.

5. A flame welder as set forth in claim 1, wherein: the solder placing device comprises a mounting column, a lifting adjusting seat, a rotating adjusting seat, a moving seat, a second driving piece and a feeding pipe; the mounting column is mounted on the frame; the lifting adjusting seat is arranged on the mounting column; the rotary adjusting seat is arranged on the lifting adjusting seat; the movable seat is connected with the rotary adjusting seat in a sliding manner; the second driving piece is arranged on the rotary adjusting seat and used for driving the moving seat to slide; the feed pipe is installed on the removal seat.

6. A welding method of an air pipe and a liquid storage tank body is characterized in that: the air pipe is a steel pipe, and the steel pipe and the liquid storage tank body are arranged on the flame welding machine of any one of claims 1-5 to be processed; the method comprises the following operation steps:

s1, cleaning a steel pipe and a liquid storage tank body, removing oil stains, rust and other defects on the surface, and drying;

s3, driving the station disc to rotate by the divider, and moving the positioning tool with the steel pipe and the liquid storage tank body clamped to a processing area of the first brazing device;

s5, after the preheating work is finished, the lifting control piece removes the control on the lifting seat to reset the lifting seat, and then the divider drives the station disc to rotate to enable the positioning tool in the processing area of the first brazing device to move to the processing area of the second brazing device;

s7, after the solder is completely melted, the work station disc is driven to rotate by the divider, so that the positioning tool in situ in the processing area of the first brazing device enters the next work station, and after the solder is cooled and solidified, the steel pipe is fixedly connected with the liquid storage tank body to form an assembly;

and S8, taking out the assembly.

7. The welding method of the air pipe and the liquid storage tank body as claimed in claim 6, characterized in that: in the step S4, the preheating time of the first brazing device to the steel pipe is 12-16S; and in the step S6, the second brazing device is heated at the joint of the steel pipe and the liquid storage tank body for 12-16S.

8. A welding method of an air pipe and a liquid storage tank body is characterized by comprising the following steps: the air pipe comprises a straight steel pipe and a bent copper pipe; mounting a copper bent pipe, a steel straight pipe and a liquid storage tank body on a flame welding machine according to any one of claims 1-5 for processing; the method comprises the following operation steps:

s8, taking out the assembly.

9. The method for welding the air pipe and the liquid storage tank body according to claim 8, characterized by comprising the following steps: in the step S4, the preheating time of the first brazing device to the joint of the straight steel pipe and the liquid storage tank body is 12-16S; and in the step S6, the second brazing device heats and melts the brazing filler metal between the steel straight pipe and the copper bent pipe and the brazing filler metal between the steel straight pipe and the liquid storage tank body for 12-16S.

10. A compressor, characterized by: comprising a reservoir comprising a combination of a gas tube according to any one of claims 6 to 9 and a reservoir body formed by a welding process.