A positioning welding device for stainless steel thin-wall smoke exhaust elbow

Abstract

The present invention relates to a positioning welding device for a stainless steel thin-wall smoke exhaust elbow, comprising a working chamber with a welding chamber and a cooling chamber arranged inside, a feed port connected to the welding chamber arranged at one end of the working chamber, and a discharge port arranged at the other end of the working chamber; a circular track running through the feed port, the welding chamber and the cooling chamber is arranged in the working chamber, a smoke exhaust elbow positioning clamping device movable along the circular track is arranged on the circular track, a discharge conveyor belt connecting the cooling chamber and the discharge port is arranged in the working chamber, a welding device is arranged in the welding chamber, and a cooling detection device is arranged in the cooling chamber. The clamping devices are arranged in pairs to complete the clamping and positioning of the smoke exhaust elbow half body, and can be rotated to adjust the welding position by moving along the circular track. The bend positioning components of the two clamping devices are aligned to clamp the bend of the smoke exhaust elbow, and at the same time limit the position of the smoke exhaust elbow. Each clamping is relatively stable to ensure the clamping accuracy.

Description

Technical Field

[0001] The invention belongs to the field of smoke exhaust pipe manufacturing, and in particular relates to a positioning welding device for a stainless steel thin-wall smoke exhaust bent pipe. Background Art

[0002] The exhaust pipe of the water heater is an important channel connecting the main body of the gas water heater and outdoor ventilation. It mainly plays the role of exhausting the smoke and exhaust gas generated by the combustion of the gas water heater to the outside. The exhaust pipe can ensure that the smoke can be smoothly discharged into the room, keep the indoor air clean and safe, and avoid the production of carbon monoxide and other gases caused by incomplete combustion, which may lead to suffocation. At the same time, the exhaust pipe can also guide the direction of the smoke flow and improve the exhaust efficiency of the gas water heater.

[0003] Most of the current exhaust pipes are made of thin-walled stainless steel with a corrugated elbow and a straight smoke pipe structure. This corrugated structure is convenient for bending thin-walled stainless steel pipes, but there are also obvious peaks and troughs, resulting in the inner wall of the exhaust pipe not being a smooth surface, but a multi-fold structure. Some folds are relieved with bending or stretching, while some folds will continue to exist and be folded, which can easily cause unsmooth exhaust and hinder the rapid discharge of smoke. Gas water heaters are often installed in kitchens, and the fumes generated by cooking in the kitchen will also be sucked into the water heater and discharged through the exhaust pipe. However, due to the presence of folds, during the exhaust process, the oil and water in the smoke will remain in the folds, and backflow may occur, affecting the use of the water heater.

[0004] So we considered using stainless steel pipes to directly process them into arc-shaped bends to replace the existing corrugated bends. However, stainless steel is heavy, so only thinner stainless steel materials can be used, such as 0.3mm thick. Due to the tensile properties of stainless steel pipes, such thin-walled stainless steel bends are difficult to form through traditional integral bending, so they have to be formed by stamping half a piece and welding.

[0005] Before welding, the stainless steel plate needs to be cut, stretched, and trimmed into two semicircular arc pieces, and then the two semicircular arc pieces are aligned and welded. Since there is no special welding equipment for welding at present, workers often weld manually. However, during cutting and stamping, the edges of the thin plate parts formed by stainless steel stretching cannot maintain consistency, are uneven, and will be deformed. Even after plastic shaping, their straightness cannot be guaranteed. Therefore, after the two semicircular arc pieces are aligned, gaps are likely to appear at the aligned edge parts, that is, the welding positions of the two semicircular arc pieces are not closed, and there is a gap. Moreover, this gap is relatively small and sometimes difficult to observe with the naked eye. Due to hand gestures, welding speed and other reasons, these gap points will be incompletely welded and gaps will appear, which is easy to cause smoke leakage during smoke exhaust, and the efficiency and quality of manual welding cannot be improved. Therefore, there is an urgent need for a welding device that can weld stainless steel elbows to ensure welding quality and efficiency. Summary of the invention

[0006] The present invention solves the defects in the prior art that welding can only be performed manually, the welding quality is poor, and the welding efficiency is low. It provides a positioning welding device for a stainless steel thin-wall smoke exhaust elbow pipe, which can accurately align the two halves of the stainless steel elbow pipe, observe the weld before welding and adjust the welding parameters, ensure that the edges of the two halves are welded intact, and improve the welding quality and welding efficiency.

[0007] The specific technical scheme of the present invention is: a positioning welding device for a stainless steel thin-wall smoke exhaust elbow, comprising a working chamber with a welding chamber and a cooling chamber arranged therein, a feed port connected to the welding chamber arranged at one end of the working chamber, and a discharge port arranged at the other end of the working chamber; a circular track passing through the feed port, the welding chamber and the cooling chamber is arranged in the working chamber, a smoke exhaust elbow positioning clamping device movable along the circular track is arranged on the circular track, a discharge conveyor belt connecting the cooling chamber and the discharge port is arranged in the working chamber, a welding device capable of performing weld detection is arranged in the welding chamber, and a cooling detection device is arranged in the cooling chamber;

[0008] Among them, the smoke exhaust bend pipe positioning clamping device includes: a traveling device matched with the circular track and a clamping device arranged on the traveling device, the clamping device includes a bend positioning component, a smoke exhaust bend pipe end positioning assembly arranged on the bend positioning component, a clamping drive component connected to the bend positioning component and a rotating drive component driving the bend positioning component to rotate to match the welding trajectory of the welding head; the clamping devices are arranged in pairs, divided into left and right branches, each of which includes a bend positioning component, a smoke exhaust bend pipe end positioning assembly, a pair of clamping drive components and a rotating drive component, the two bend positioning components are relatively combined to form a positioning channel for the bend of the smoke exhaust bend pipe, the smoke exhaust bend pipe end positioning assembly has a smoke exhaust bend pipe end positioning inner core and a smoke exhaust bend pipe end positioning outer sleeve, and the smoke exhaust bend pipe end positioning assembly is provided with an avoidance structure corresponding to the welding position of the two halves of the smoke exhaust bend.

[0009] The smoke exhaust elbow of the present invention is formed by welding with 0.3mm stainless steel. The welding device is equipped with a weld detection device. Before welding, the weld is positioned and the shape of the weld is determined so as to adjust the specific parameters of the welding to reach the position, thereby ensuring that high-quality welding can be performed according to the gap even if there is a gap. In order to prevent heat from spreading rapidly in the stainless steel plate and reduce the heat-affected zone, a cooling chamber is provided in the working chamber in addition to the welding chamber. The smoke exhaust elbow is cooled by the cooling chamber, which helps to control the solidification speed of the stainless steel welding molten pool and makes the weld surface smoother, thereby ensuring the quality of the welding surface. The annular track in the working chamber is designed to enable the clamping device to move cyclically, and multiple sets of clamping devices can be configured at the same time, which is conducive to clamping and loading the smoke exhaust elbow halves and reducing waiting time. The clamping devices are arranged in pairs to complete The smoke exhaust bend pipe halves are clamped and positioned, and moved along the circular track at the same time, to assist in the rotation of the smoke exhaust bend pipe to adjust the welding position during the welding process. The bend positioning components of the two clamping devices are aligned to clamp the bend of the smoke exhaust bend pipe, and at the same time define the position of the smoke exhaust bend pipe, including the relative position between the two smoke exhaust bend pipe halves. This relative position is important for the alignment between the edges of the smoke exhaust bend pipe halves. The positioning channel formed by the combination of the two bend positioning components defines the unique position of the smoke exhaust bend pipe. Each clamping is relatively stable without large position changes. The end positioning components of the smoke exhaust bend pipe are located at the two end positions of the positioning channel, which just match the ends of the smoke exhaust bend pipe, limit the alignment shape of the ends of the smoke exhaust bend pipe, and avoid the edges of the smoke exhaust bend pipe halves being offset at the end positions, which is beneficial to subsequent welding.

[0010] Preferably, the cross-section of the bend positioning component is in the shape of an arc, the central angle of the arc is less than 180°, the entire bend positioning component is bent at 90°, the diameter of the inner surface of the bend positioning component is matched with the diameter of the outer surface of the exhaust elbow, and the bending radius of the inner surface of the bend positioning component is matched with the bending radius of the outer surface of the exhaust elbow. The cross-section of the positioning channel after the bend positioning components are aligned is circular, but in order to expose the welding position, the edges of the bend positioning components cannot touch each other.

[0011] Preferably, the smoke exhaust elbow end positioning assembly is arranged outside the end of the elbow positioning component, a telescopic component is fixed outside the elbow positioning component, the smoke exhaust elbow end positioning assembly is fixed to the telescopic end of the telescopic component, and the axis of the smoke exhaust elbow end positioning assembly is coaxial with the axis at the end of the elbow positioning component. The smoke exhaust elbow end positioning assembly works after the elbow positioning component is positioned, so the smoke exhaust elbow end positioning assembly is moved outward by the telescopic component to leave enough space for loading.

[0012] Preferably, the rotating drive component includes a rotating motor disposed outside the bend positioning component, the output end of the rotating motor's shaft is fixed to the outside of the bend positioning component, and the housing of the rotating motor is fixed to the clamping driving component. After the two halves of the smoke exhaust elbow are matched, there are two welds, which are located at the outermost and innermost sides of the smoke exhaust elbow, respectively. Therefore, during the welding process, the smoke exhaust elbow needs to be rotated, and the position of the smoke exhaust elbow is adjusted by rotation so that the welding position faces the welding device.

[0013] Preferably, the clamping driving component includes a fixed plate, two guide rods fixed to the fixed plate, and a telescopic cylinder for driving the fixed plate to clamp and move. The walking device is provided with guide holes that cooperate with the guide rods, and connecting plates are fixed at the ends of the two guide rods. The telescopic rod of the telescopic cylinder is fixed to the connecting plate.

[0014] Preferably, the annular track is in the shape of an annulus, a slide groove is arranged along the annulus, the opening of the slide groove faces outward, and the annular track is also provided with an inner groove on the inner side of the annulus, and the inner groove and the slide groove cooperate to form a walking support guide channel for the walking device; the annular track is divided into two branches, the two annular tracks are opposite, and the clamping device is located between the two annular tracks. The cooperation between the inner groove and the slide groove enables the walking device to be clamped on the annular track and move cyclically along the annular track.

[0015] Preferably, the walking device comprises a walking frame for installing the clamping device, a first roller and a second roller arranged on the walking frame and matched with the circular track, a walking motor is arranged on the walking frame, the walking motor is connected to the first roller, the second roller is connected to a T-shaped slide bar, an elastic device is connected between the T-shaped slide bar and the walking frame and forms a floating structure relative to the walking frame. The T-shaped slide bar can move on the walking frame to facilitate the walking frame to pass through the curved part of the circular track.

[0016] Preferably, the welding device comprises an adjustment device installed on the top of the welding chamber, a welding head arranged on the adjustment device, and a weld visual detector arranged on the adjustment device, the adjustment device comprises two parallel transverse linear guides, a transverse slide arranged on the transverse linear guide, a longitudinal linear guide connecting the two transverse slides, a longitudinal slide arranged on the longitudinal linear guide, and a fixed frame arranged on the longitudinal slide, the weld visual detector is fixed on the fixed frame, a welding control device is also arranged in the fixed frame, a welding head telescopic cylinder is arranged in the fixed frame, and the welding head is connected to the welding head telescopic cylinder. The welding device is equipped with a weld visual detector, which can identify the position of the weld, the shape of the weld, and the width gap of the weld, so as to adjust the welding parameters such as welding power, welding travel speed, welding travel trajectory, welding head height, etc. through the welding control device. If a gap appears between the edges of the smoke exhaust elbow half body and the gap exceeds the set width, the welding power should be reduced, the welding travel speed should be reduced, the welding travel trajectory should be adjusted, and the welding head height may also be changed.

[0017] Preferably, the cooling detection device adopts an air-cooling structure, including a cooling fan and a temperature detector. There are three cooling fans, which are arranged above the circular track, and the blowing direction of the cooling fans is toward the middle position of the circular track.

[0018] Preferably, a weld flaw detector and a picking device are provided in the working chamber. The weld flaw detector is located above the middle of the curved tail of the two circular tracks. The picking device is located above the discharge conveyor belt outside the curved tail of the circular track. The picking device includes a transverse linear guide rail, a slide seat provided on the transverse linear guide rail, a lifting cylinder connected to the slide seat, and a clamp fixed on the lifting cylinder. A receiving box opposite to the transverse linear guide rail is provided on the side of the discharge conveyor belt. The weld flaw detector can detect the welding quality. If the welding quality does not meet the standard, the smoke exhaust elbow pipe is picked up from the discharge conveyor belt and moved to the receiving box by the picking device. If the welding is qualified, it is sent out through the discharge conveyor belt through the discharge port.

[0019] The beneficial effects of the present invention are as follows: 1. The welding device is equipped with weld detection, which can locate the weld and determine the shape of the weld before welding, so as to adjust the specific parameters of the welding to reach the position, and ensure that high-quality welding can be performed according to the gap even if there is a gap;

[0020] 2. In addition to the welding chamber, a cooling chamber is also added in the working chamber. The exhaust elbow is cooled by the cooling chamber, which helps to control the solidification speed of the stainless steel welding molten pool and make the weld surface smoother to ensure the welding surface quality;

[0021] 3. The clamping devices are arranged in pairs to complete the clamping and positioning of the exhaust elbow half body, and move along the circular track at the same time, to assist in the rotation of the exhaust elbow to adjust the welding position during the welding process. The bend positioning components of the two clamping devices are aligned to clamp the bend of the exhaust elbow, and at the same time limit the position of the exhaust elbow. Each clamping is relatively stable, and there will be no large position changes, ensuring the clamping accuracy;

[0022] 4. The positioning components at the ends of the smoke exhaust elbow are located at both ends of the positioning channel, which just match the ends of the smoke exhaust elbow, limit the matching shape of the ends of the smoke exhaust elbow, avoid the edge of the smoke exhaust elbow half being offset at the end position, and facilitate subsequent welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the back structure of the present invention;

[0025] Figure 3 It is a schematic diagram of an internal structure of the present invention;

[0026] Figure 4 It is a structural schematic diagram of a cooling chamber side of the present invention;

[0027] Figure 5 It is a structural schematic diagram of a circular track of the present invention;

[0028] Figure 6 It is a structural schematic diagram of a clamping device of the present invention;

[0029] Figure 7 It is a structural schematic diagram of a bend positioning component of the present invention;

[0030] Figure 8 It is a structural schematic diagram of a smoke exhaust elbow end positioning assembly of the present invention;

[0031] Fig. 9 It is a structural schematic diagram of a welding device of the present invention;

[0032] Fig.10 It is a structural schematic diagram of a smoke exhaust elbow half body of the present invention;

[0033] In the figure: 1, working chamber, 2, cooling chamber, 3, welding chamber, 4, display controller, 5, connecting frame, 6, feeding port, 7, ring track, 8, clamping device, 9, welding device, 10, picking device, 11, discharging conveyor belt, 12, discharging port, 13, receiving box, 14, adjusting device, 15, fixing frame, 16, cooling fan, 17, top frame, 18, weld flaw detector, 19, lifting cylinder, 20, horizontal linear guide rail, 21, clamp, 22, temperature detector, 23, slide plate, 24, upper support frame, 25, lower support frame, 26, slide groove, 27, inner groove of ring, 28, walking frame, 29, first roller, 30, second roller, 31 , fixed plate, 32, telescopic cylinder, 33, spring, 34, connecting plate, 35, guide rod, 36, adjustment slot, 37, T-shaped slide bar, 38, elastic device, 39, walking motor, 40, right bend positioning component, 41, rotating shaft, 42, rotating motor, 43, telescopic component, 44, exhaust elbow end positioning assembly, 45, left bend positioning component, 46, exhaust elbow end positioning jacket, 47, exhaust elbow end positioning core, 48, avoidance structure, 49, exhaust elbow end plug-in cavity, 50, longitudinal linear guide, 51, longitudinal slide, 52, welding head telescopic cylinder, 53, welding head, 54, weld visual detector, 55, exhaust elbow half. DETAILED DESCRIPTION

[0034] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. Example

[0035] like Figure 1 Figure 2 As shown, a positioning welding device for a stainless steel thin-wall smoke exhaust elbow comprises a working chamber 1 with a welding chamber 3 and a cooling chamber 2 arranged therein, a feed port 6 connected to the welding chamber is arranged at one end of the working chamber, a discharge port 12 is arranged at the other end of the working chamber, and a cover plate is arranged at the discharge port. A display controller 4 is connected to the housing of the discharge port through a connecting frame 5.

[0036] The working chamber is provided with an annular track 7 which passes through the feed port, welding chamber and cooling chamber. One end of the annular track extends out of the feed port to facilitate material clamping. There are two annular tracks, each of which is in a ring shape. The two annular tracks are vertical and parallel to each other. Each annular track is provided with a smoke exhaust bend positioning clamping device which can move along the annular track. The smoke exhaust bend positioning clamping device comprises: a traveling device matched with the annular track and a clamping device 8 arranged on the traveling device. The smoke exhaust bend positioning clamping devices on the two annular tracks cooperate with each other one-to-one to complete the smoke exhaust bend positioning clamping. The working chamber is provided with a discharge conveyor belt 11 which connects the cooling chamber and the discharge port. The discharge conveyor belt is located at the lower position between the two annular tracks. A welding device 9 is provided in the welding chamber, and a cooling detection device is provided in the cooling chamber. Figure 3 Figure 4 As shown, a weld flaw detector 18 and a pick-up device 10 are arranged in the working chamber at the position corresponding to the tail of the circular track. The weld flaw detector is fixed by the top frame 17 and is located above the middle of the curved tail of the two circular tracks. The pick-up device is located above the discharge conveyor belt outside the curved tail of the circular track. The pick-up device includes a transverse linear guide rail 20, a slide seat arranged on the transverse linear guide rail, a lifting cylinder 19 connected to the slide seat, and a clamp 21 fixed on the lifting cylinder. A material receiving box 13 is arranged on the side of the discharge conveyor belt opposite to the transverse linear guide rail. A downwardly inclined slide plate 23 is arranged between the discharge conveyor belt box and the discharge port.

[0037] like Figure 5 As shown, the annular track is in the shape of an annulus, the upper side is fixed by an upper support frame 24, and the lower side is fixed by a lower support frame 25. A bottom-closed slide groove 26 is arranged along the annular ring in the middle of the annular track, and the opening of the slide groove faces outward. The slide groove of the right annular track opens to the right, and the slide groove of the left annular track opens to the left. The annular track is also provided with an inner groove 27 located inside the ring. The inner groove and the slide groove cooperate to form a walking support guide channel for the walking device. The two annular tracks are arranged opposite to each other, and the clamping device is located between the two annular tracks.

[0038] like Figure 6As shown, the walking device includes a walking frame 28 for installing the clamping device, a first roller 29 and a second roller 30 arranged on the walking frame and matched with the circular track, a walking motor 39 is arranged on the walking frame, the walking motor is connected to the first roller, the second roller is connected to a T-shaped slide bar 37, a vertical adjustment groove 36 is arranged in the middle of the walking frame, the T-shaped slide bar passes through the adjustment groove, and elastic devices 38 are connected between the two sides of the T-shaped slide bar and the side of the walking frame to form a floating structure relative to the walking frame. The first roller is in the slide groove in the middle of the circular track, and the second roller is in the inner groove of the ring of the circular track.

[0039] like Figure 7 As shown, the clamping device includes a bend positioning component, a smoke exhaust bend pipe end positioning component 44 arranged on the bend positioning component, a clamping driving component connected to the bend positioning component, and a rotating driving component driving the bend positioning component to rotate to match the welding trajectory of the welding head. The clamping devices are arranged in pairs, divided into left and right branches, each of which includes a bend positioning component, a smoke exhaust bend pipe end positioning component, a pair of clamping driving components and a rotating driving component, wherein the bend positioning component of the left side clamping device is the left bend positioning component 45, and the bend positioning component of the right side clamping device is the right bend positioning component 40, the left bend positioning component and the right bend positioning component are symmetrically arranged, and the two bend positioning components are relatively combined to form a positioning channel for the bend of the smoke exhaust bend pipe, the end of the left bend positioning component is connected to the smoke exhaust bend pipe end positioning component 44 through a telescopic component 43, and the end of the right bend positioning component is connected to the smoke exhaust bend pipe end positioning component 44 through a telescopic component, and after the two bend positioning components are matched, the two smoke exhaust bend pipe end positioning components are exactly at the two ends of the positioning channel.

[0040] The cross-sectional shape of the bend positioning component is an arc shape, the central angle of the arc is less than 180°, the overall shape of the bend positioning component is bent at 90°, the diameter of the inner surface of the bend positioning component is matched with the diameter of the outer surface of the smoke exhaust elbow, and the bending radius of the inner surface of the bend positioning component is matched with the bending radius of the outer surface of the smoke exhaust elbow. The two ends of the bend positioning component are straight lines, the length of the straight line is less than the length of the straight part of the smoke exhaust elbow, and after the two bend positioning components are matched, the opposite edges of the bend positioning components are separated from each other, and the separation position just corresponds to the welding position of the smoke exhaust elbow. The rotating drive component includes a rotating motor 42 arranged on the outside of the bend positioning component, the output end of the rotating shaft 41 of the rotating motor is fixed to the outside of the bend positioning component, and the housing of the rotating motor is fixed to the clamping drive component. The rotating motor can drive the bend positioning component to rotate through the rotating shaft. In actual work, the rotation direction of the rotating motor on the left bend positioning component is opposite to the rotation direction of the rotating motor on the right bend positioning component. In this way, after the left bend positioning component and the right bend positioning component are aligned, the rotation directions of the two bend positioning components are consistent.

[0041] like Figure 6As shown, the clamping driving component includes a fixed plate 31, two guide rods 35 fixed to the fixed plate, and a telescopic cylinder 32 for driving the fixed plate to clamp and move. A guide hole matching the guide rod is provided on the traveling frame, and a connecting plate 34 is fixed at the ends of the two guide rods. The telescopic cylinder is fixed to the traveling frame, and the telescopic rod of the telescopic cylinder passes through the traveling frame, and the end of the telescopic rod is fixed to the connecting plate. There are two guide rods, and the two guide rods are arranged up and down relative to the traveling frame. There are two telescopic cylinders, and the two telescopic cylinders are arranged left and right relative to the traveling frame. The rotating motor on the bend positioning component is fixed to the fixed plate, and a spring 33 is sleeved on the part of the guide rod between the fixed plate and the traveling frame. The telescopic rod retracts and drives the connecting plate to approach the traveling frame. The connecting plate pushes the fixed plate to move through the guide rod, and the fixed plate drives the bend positioning component to move through the rotating motor and the rotating shaft. At this time, the two bend positioning components are closed. The spring on the guide rod can play a buffering role to prevent the fixed plate from moving too fast, causing the bend positioning component to deform the smoke exhaust elbow clamp.

[0042] like Figure 8 As shown, the smoke exhaust elbow end positioning component 44 has a smoke exhaust elbow end positioning inner core 47 and a smoke exhaust elbow end positioning outer sleeve 46. The smoke exhaust elbow end positioning component is provided with an avoidance structure 48 corresponding to the welding position of the two smoke exhaust elbow halves 55. The avoidance structure on the smoke exhaust elbow end positioning outer sleeve is a slotted structure with two ends through, and the avoidance structure of the smoke exhaust elbow end positioning inner core is a lower groove structure with two ends through. The smoke exhaust elbow end positioning outer sleeve and the smoke exhaust elbow end positioning inner core are an integrated structure. The outer surface of the smoke exhaust elbow end positioning inner core and the inner wall of the smoke exhaust elbow end positioning outer sleeve are the smoke exhaust elbow end plug-in cavity 49. The smoke exhaust elbow end plug-in cavity is annular and matches the end shape of the smoke exhaust elbow. The axial length of the smoke exhaust elbow end positioning inner core is greater than the axial length of the smoke exhaust elbow end positioning outer sleeve, and the end edge of the smoke exhaust elbow end positioning inner core is rounded. After the smoke exhaust elbow end positioning assembly is connected to the elbow positioning component, the axis of the smoke exhaust elbow end positioning assembly is coaxial with the axis of the end straight line of the elbow positioning component.

[0043] like Fig. 9 As shown, the welding device arranged in the welding chamber of the working chamber includes an adjusting device 14 installed on the top of the welding chamber, a welding head 53 arranged on the adjusting device and a weld visual detector 54 arranged on the adjusting device, the adjusting device includes two parallel transverse linear guides 20, a transverse slide arranged on the transverse linear guide, a longitudinal linear guide 50 connecting the two transverse slides, a longitudinal slide 51 arranged on the longitudinal linear guide and a fixed frame 15 arranged on the longitudinal slide, the weld visual detector is fixed on the fixed frame, a welding control device is also arranged in the fixed frame, a welding head telescopic cylinder 52 is arranged in the fixed frame, the welding head is connected to the welding head telescopic cylinder, and under the control of the welding control device, the welding head telescopic cylinder can drive the welding head to rise and fall.

[0044] like Figure 4 As shown, the cooling detection device arranged in the cooling chamber adopts an air-cooling structure, including a cooling fan 16 and a temperature detector 22. There are three cooling fans, which are arranged above the circular track in a left-middle-right arrangement. The blowing direction of the cooling fans is toward the middle position of the circular track. The temperature detector monitors the temperature of the cooling chamber.

[0045] like Fig.10 As shown, the thin-walled stainless steel plate is cut and stamped into a smoke exhaust pipe half body 55, and the two smoke exhaust pipe half bodies are symmetrical. Before welding, the smoke exhaust pipe half body is first placed into the corresponding bend positioning component, and the bend part is just adapted. The bend positioning component defines the position of the smoke exhaust pipe half body, and then the telescopic cylinder 32 is retracted, and the guide rod pushes the fixed plate 31, and the fixed plate drives the bend positioning component to close and align the two smoke exhaust pipe halves. Then the telescopic component on the bend positioning component drives the smoke exhaust pipe end positioning component 44 to be placed on the end of the matched smoke exhaust pipe, and at this time, the relative edges of the two smoke exhaust pipe halves are accurately aligned. Start the travel motor 39, and the travel device moves along the circular track with the clamping device into the welding chamber. After moving into position, under the adjustment of the adjustment device 14, the weld visual detector 54 first detects the weld to determine the position, shape, and gap size of the weld, and then transmits the detection result to the welding control device. Under the control of the welding control device, the welding head welds the mating parts of the edges of the two smoke exhaust elbow halves. The welding head will move with the change of welding position. At the same time, the rotating motor of the rotating drive component works to drive the bending positioning component to rotate, so that the welding surface always maintains a suitable welding angle with the welding head. After welding is completed, the smoke exhaust elbow continues to move forward along the circular track and is air-cooled in the cooling chamber to ensure that the temperature of the welding part meets the requirements. After cooling, the smoke exhaust elbow is sent to the bottom of the weld flaw detector, and the rotating drive component rotates the smoke exhaust elbow, and the weld flaw detector performs quality inspection on the welding part. If qualified, the exhaust pipe elbow will be placed on the discharge conveyor belt, and will be sent out from the discharge port through the slide plate as the discharge conveyor belt moves forward. A receiving box or other conveyor belts can be set at the discharge port to proceed to the next process. If the inspection fails, the exhaust pipe elbow will be picked up from the discharge conveyor belt by the picking device and moved horizontally to the receiving box. The welding process and various parameter changes can be observed through the display controller, which is convenient for optimizing the cutting, stamping and welding data of the exhaust pipe half.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A positioning welding device for a stainless steel thin-wall smoke exhaust elbow, characterized in that: The invention comprises a working chamber 1 in which a welding chamber 3 and a cooling chamber (2) are arranged, a material feed port 6 connected to the welding chamber is arranged at one end of the working chamber, and a material discharge port 12 is arranged at the other end of the working chamber; a circular track 7 is arranged in the working chamber and passes through the material feed port, the welding chamber and the cooling chamber, a smoke exhaust elbow positioning clamping device which can move along the circular track is arranged on the circular track, a material discharge conveyor belt (11) connecting the cooling chamber and the material discharge port is arranged in the working chamber, a welding device (9) capable of performing weld detection is arranged in the welding chamber, and a cooling detection device is arranged in the cooling chamber; The smoke exhaust pipe bend positioning clamping device comprises: a running device matched with the circular track and a clamping device (8) arranged on the running device, the clamping device comprising a bend positioning component, a smoke exhaust pipe bend end positioning assembly (44) arranged on the bend positioning component, a clamping drive component connected to the bend positioning component, and a rotating drive component driving the bend positioning component to rotate to match the welding trajectory of the welding head; the clamping devices are arranged in pairs, divided into left and right branches, each of which comprises a bend positioning component, a smoke exhaust pipe bend end positioning assembly, a pair of clamping drive components and a rotating drive component, the two bend positioning components are relatively combined to form a positioning channel for the bend of the smoke exhaust pipe bend, the smoke exhaust pipe bend end positioning assembly comprises a smoke exhaust pipe bend end positioning inner core (47) and a smoke exhaust pipe bend end positioning outer sleeve (46), and the smoke exhaust pipe bend end positioning assembly is provided with an avoidance structure (48) corresponding to the welding position of the two halves of the smoke exhaust pipe.

2. The positioning welding equipment for a stainless steel thin-wall smoke exhaust elbow according to claim 1 is characterized in that: The cross-sectional shape of the bend positioning component is an arc, the central angle of the arc is less than 180°, the bend positioning component as a whole is bent at 90°, the diameter of the inner surface of the bend positioning component is adapted to the outer surface diameter of the smoke exhaust elbow, and the bending radius of the inner surface of the bend positioning component is adapted to the bending radius of the outer surface of the smoke exhaust elbow.

3. The positioning welding equipment for a stainless steel thin-wall smoke exhaust elbow according to claim 1 is characterized in that: The smoke exhaust bend end positioning assembly is arranged outside the end of the bend positioning component, a telescopic component (43) is fixed outside the bend positioning component, the smoke exhaust bend end positioning assembly is fixed to the telescopic end of the telescopic component, and the axis of the smoke exhaust bend end positioning assembly is coaxial with the axis of the end straight line of the bend positioning component.

4. The positioning welding equipment for a stainless steel thin-wall smoke exhaust elbow according to claim 1 is characterized in that: The rotary drive component comprises a rotary motor (42) arranged outside the bend positioning component, the output end of the rotary shaft (41) of the rotary motor is fixed to the outside of the bend positioning component, and the housing of the rotary motor is fixed to the clamping drive component.

5. A positioning welding device for a stainless steel thin-wall smoke exhaust elbow according to claim 1, 2, 3 or 4, characterized in that: The clamping driving component comprises a fixed plate (31), two guide rods (35) fixed to the fixed plate, and a telescopic cylinder (32) for driving the fixed plate to move the clamping. The walking device is provided with guide holes that match the guide rods. The ends of the two guide rods are fixed with connecting plates (34), and the telescopic rods of the telescopic cylinder are fixed to the connecting plate.

6. The positioning welding equipment for a stainless steel thin-wall smoke exhaust elbow according to claim 1 is characterized in that: The annular track is in the shape of an annulus, and a slide groove (26) is arranged along the annulus, the opening of the slide groove faces outward, and the annular track is also provided with an inner ring groove (27) located inside the annulus, and the inner ring groove and the slide groove cooperate to form a walking support guide channel for the walking device; the annular track is divided into two branches, the two annular tracks are opposite to each other, and the clamping device is located between the two annular tracks.

7. A positioning welding device for a stainless steel thin-wall smoke exhaust elbow according to claim 1 or 2 or 3 or 4 or 6, characterized in that: The walking device comprises a walking frame (28) for mounting the clamping device, a first roller (29) and a second roller (30) arranged on the walking frame and matched with the circular track, a walking motor (39) is arranged on the walking frame, the walking motor is connected to the first roller, the second roller is connected to a T-shaped sliding rod (37), and an elastic device (38) is connected between the T-shaped sliding rod and the walking frame to form a floating structure relative to the walking frame.

8. The positioning welding equipment for a stainless steel thin-wall smoke exhaust elbow according to claim 1 is characterized in that: The welding device comprises an adjustment device (14) installed on the top of a welding chamber, a welding head (53) arranged on the adjustment device, and a weld seam visual detector (54) arranged on the adjustment device. The adjustment device comprises two parallel transverse linear guide rails (20), a transverse slide seat arranged on the transverse linear guide rails, a longitudinal linear guide rail (50) connecting the two transverse slide seats, a longitudinal slide seat (51) arranged on the longitudinal linear guide rails, and a fixed frame (15) arranged on the longitudinal slide seat. The weld seam visual detector is fixed on the fixed frame. A welding control device is also arranged in the fixed frame. A welding head telescopic cylinder (52) is arranged in the fixed frame. The welding head is connected to the welding head telescopic cylinder.

9. The positioning welding equipment for a stainless steel thin-wall smoke exhaust elbow according to claim 1 is characterized in that: The cooling detection device adopts an air cooling structure, comprising a cooling fan (16) and a temperature detector (22). There are three cooling fans, which are arranged above the circular track, and the blowing direction of the cooling fans is toward the middle position of the circular track.

10. The positioning welding equipment for a stainless steel thin-wall smoke exhaust elbow according to claim 1, characterized in that: A weld flaw detector and a picking device are arranged in the working chamber. The weld flaw detector is located above the middle of the curved tails of the two circular rails. The picking device is located above the discharge conveyor belt outside the curved tails of the circular rails. The picking device comprises a transverse linear guide rail, a slide seat arranged on the transverse linear guide rail, a lifting cylinder (19) connected to the slide seat, and a clamp (21) fixed on the lifting cylinder. A material receiving box (13) is arranged on the side of the discharge conveyor belt opposite to the transverse linear guide rail.

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