A welding device for a stainless steel flat plate and its welding method

Abstract

The present invention relates to the field of welding technology, and discloses a welding device for a stainless steel flat plate and a welding method thereof, including: a welding table, on the bottom plate of which a partition is fixedly installed, and a controller is fixedly installed therein. The partition divides the bottom plate of the welding table into a first area and a second area. The present invention divides the inside of the welding table into a first area and a second area, and determines the circulating direction of the welding torch in the welding table according to the selection of forward tilt welding or backward tilt welding. The welding torch can be switched between the two areas by the movement of the sliding seat in the sliding frame. At this time, the stainless steel flat plate bodies in the two areas can be welded alternately. Since the welding directions of the welding torch in the two areas are different, the inclination angle of the welding torch can be changed through the action of the linkage assembly when the welding torch switches positions, so that the angle between its axis and the welding direction is always the same, thereby ensuring that the same welding method is adopted when the welding torch welds alternately, and further ensuring the consistency of the welding effect.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and particularly relates to a welding device for stainless steel flat plates and a welding method thereof. Background Art

[0002] The welding of stainless steel flat plates is a process of melting and connecting the interfaces of two stainless steel flat plates into a whole by using welding equipment. In the current welding process, when the welding equipment operates on the flat plate, a specific angle is usually formed between the welding equipment and the flat plate, and this angle is determined by the relative position of the axis of the welding equipment and the welding direction.

[0003] When the axis of the welding equipment forms an acute angle with the welding direction, that is, in the case of forehand welding, the discharging effect of the arc on the molten metal in the molten pool is weakened, the molten metal at the bottom of the molten pool becomes thicker, the penetration depth decreases, and the penetration width increases. This helps to obtain a wider weld seam and a lower penetration depth, and is suitable for the welding of thin plates; conversely, when the axis of the welding equipment forms an obtuse angle with the welding direction, that is, in the case of backhand welding, it helps the penetration and deep penetration of the weld seam, and is suitable for the welding of medium and thick plates or occasions where the penetration depth and strength of the weld seam need to be increased;

[0004] In automated welding, the welding equipment usually needs to reciprocate along a fixed track to achieve the welding of the entire workpiece. This moving method requires the welding equipment to return to the starting position after completing one weld seam to prepare for the welding of the next weld seam. In this process, if the forehand welding method is used when the welding equipment welds from left to right, then when continuing to weld during the reset (return), the backhand welding method will have to be used, which will result in different welding effects on the same plate due to different welding methods. And if it is selected not to perform the welding operation when the welding equipment is reset, this will cause the welding equipment to weld only in a fixed moving direction, ensuring that the same welding method is used for each weld seam. However, this method will increase the idle time of the welding equipment, thereby reducing the overall welding efficiency. Based on this, the present invention purposefully provides a welding device for stainless steel flat plates and a welding method thereof that can ensure the same welding method for a reciprocating welding equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device for stainless steel flat plates and a welding method thereof that can ensure the same welding method for a reciprocating welding equipment in view of the deficiencies of the prior art, so as to solve the technical problem of being difficult to find a balance between ensuring welding quality and improving welding efficiency in the process of automated welding.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A welding device for stainless steel flat plates, comprising:

[0008] Welding table, on the bottom plate of which a partition is fixedly installed, and a controller is fixedly installed inside it. The partition divides the bottom plate of the welding table into a first area and a second area. The first area and the second area have the same area, and two stainless steel flat plate bodies are clamped and fixed in both of them through fixing components. A welding gap is formed at the joint of the two stainless steel flat plate bodies;

[0009] Sliding frame, which is slidably installed on the top plate of the welding table. A driving source for driving the sliding frame to reciprocate horizontally is fixedly installed on the welding table. A sliding seat is slidably installed inside the sliding frame, and a first output source for driving the sliding seat to reciprocate horizontally is built in it. Both the driving source and the first output source are connected to the controller. A fixed frame is rotatably connected inside the sliding seat, and a linkage component for driving the fixed frame to rotate is arranged inside it. A welding torch is clamped and fixed on the fixed frame; and

[0010] When the sliding seat is at one end inside the sliding frame, the welding torch is aligned with one welding gap; when the sliding seat is at the other end inside the sliding frame, the welding torch is aligned with the other welding gap; and when the first output source drives the sliding seat to move from one end to the other end, the linkage component will drive the fixed frame to rotate, and the welding torch rotates synchronously.

[0011] As a further scheme of the present invention: the linkage component includes a first bevel gear, a second bevel gear, a rack plate and a transmission gear. The first bevel gear, the second bevel gear and the transmission gear are all rotatably installed on the sliding seat. The first bevel gear meshes with the second bevel gear. The first bevel gear is fixedly connected with the fixed frame, and the second bevel gear is fixedly connected with the transmission gear. The rack plate is arranged at the bottom of the sliding frame and meshes with the transmission gear.

[0012] As a further scheme of the present invention: the rack plate is slidably installed inside the sliding frame. A second output source for driving the rack plate to reciprocate horizontally is built in the sliding frame. An ultrasonic sensor is fixedly installed on the partition, and the ultrasonic sensor is located above the stainless steel flat plate body. Both the ultrasonic sensor and the second output source are connected to the controller.

[0013] As a further scheme of the present invention: a contact plate is slidably installed inside the fixed frame, and a screw rod is threadedly connected to it. The contact plate abuts against the welding torch, and one end of the screw rod abuts against the contact plate.

[0014] As a further scheme of the present invention: the fixing component includes a fixed block and a lifting block. The fixed block is fixedly installed on the bottom plate of the welding table, and the lifting block is slidably installed on the fixed block. An internal output source for driving the lifting block to lift is arranged inside the fixed block, and the internal output source is connected to the controller.

[0015] As a further scheme of the present invention: a slide rail is fixedly installed on the top plate of the welding table, and the sliding frame is slidably installed on the slide rail.

[0016] As a further solution of the present invention: cleaning openings are provided on both sides of the welding table, a cleaning member is arranged in the cleaning opening, and the cleaning member cooperates with the head of the welding torch.

[0017] A welding method for a stainless steel flat plate, which is applied to a welding device for a stainless steel flat plate as described above. The method comprises the following steps:

[0018] Step S1: First, the operator determines whether the stainless steel flat plate body is suitable for forehand welding or backhand welding, and switches to the corresponding mode through the controller.

[0019] Step S2: Place two stainless steel flat plate bodies in the first area and the second area respectively, and fix the stainless steel flat plate bodies through the fixing assembly. At this time, a welding gap is formed at the joint of the two stainless steel flat plate bodies.

[0020] Step S3: The controller controls the driving source to drive the sliding frame to move from one end of the welding table to the other end. At this time, the welding torch will weld the welding gap between the two stainless steel flat plate bodies in the first area.

[0021] Step S4: The controller controls the first output source to drive the sliding seat to move from one end of the sliding frame to the other end. At this time, the welding torch moves from the first area to the second area, and the welding torch will rotate under the action of the linkage assembly, so that the inclination direction of the welding torch after the sliding frame moves is opposite to the inclination direction of the welding torch before the sliding frame moves. And at this time, the operator can replace the stainless steel flat plate body that has been welded in the first area.

[0022] Step S5: The controller controls the driving source to drive the sliding frame to reset. At this time, the welding torch will weld the welding gap between the two stainless steel flat plate bodies in the second area.

[0023] Step S6: Repeat the above steps to alternately weld the stainless steel flat plate bodies in the first area and the second area, and the welding methods used are the same.

[0024] The beneficial effects of the present invention:

[0025] 1. In the present invention, the welding table is divided into a first area and a second area, and two groups of stainless steel flat plate bodies to be welded are placed in the two areas respectively. According to the thickness of the stainless steel flat plate body and the expected welding effect, forward welding or backward welding is selected, that is, the circulation direction of the welding torch in the welding table is determined. By moving the sliding seat in the sliding frame, the welding torch can be switched between the two areas. At this time, the stainless steel flat plate bodies in the two areas can be welded alternately. Since the welding directions of the welding torch in the two areas are different, when the welding torch switches positions, through the action of the linkage component, the inclination angle of the welding torch can be changed so that the angle between its axis and the welding direction is always the same, thus ensuring that the same welding method is adopted during the alternate welding of the welding torch, and further ensuring the consistency of the welding effect. Moreover, when the welding torch switches positions, the already welded stainless steel flat plate body can be replaced, avoiding the problem of reduced efficiency of batch welding caused by excessive welding idle time;

[0026] 2. In the present invention, by rotating the screw rod to move it away from the abutting plate, the clamping of the welding torch by the abutting plate is loosened at this time. The welding torch can be removed from the fixed frame and replaced. This structure facilitates the operator to install different types of welding torches on the fixed frame and can select a suitable welding torch for welding operations according to the specific type of the stainless steel flat plate body;

[0027] 3. In the present invention, a cleaning port is opened on the welding table, and a cleaning part is arranged in the cleaning port. When the first output source drives the sliding seat to translate in the sliding frame, the linkage component will drive the welding torch to rotate. During the rotation of the welding torch, one end of the welding torch will pass through the cleaning port and contact the cleaning part in the cleaning port, and the cleaning part can remove the spatter and oxide residues on the head of the welding torch, which can not only effectively clean and maintain the welding torch head, but also extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 is a schematic diagram of the structure of the top plate of the welding table in the present invention;

[0031] Figure 3 is a schematic diagram of the structure of the sliding frame in the present invention;

[0032] Figure 4 is a schematic diagram of the structure of the sliding seat in the present invention;

[0033] Figure 5 is a cooperation diagram of the sliding frame and the sliding seat in the present invention;

[0034] Figure 6 is a cooperation diagram of the sliding frame and the sliding seat in the present invention;

[0035] Figure 7 This is the mating diagram of the sliding frame and the sliding seat in the present invention.

[0036] In the figure: 1, welding table; 101, slide rail; 102, cleaning port; 103, first area; 104, second area; 2, partition; 3, fixing assembly; 301, fixing block; 302, lifting block; 4, stainless steel flat plate body; 5, sliding frame; 6, sliding seat; 7, welding torch; 8, fixing frame; 801, screw; 802, abutting plate; 9, first bevel gear; 10, second bevel gear; 11, rack plate; 12, transmission gear. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0038] Please refer to Figures 1-7 As shown, the present invention is a welding device for stainless steel flat plates, including:

[0039] A welding table 1, on the bottom plate of which a partition 2 is fixedly installed, and a controller is fixedly installed therein. The partition 2 divides the bottom plate of the welding table 1 into a first area 103 and a second area 104. The first area 103 and the second area 104 have the same area, and two stainless steel flat plate bodies 4 are clamped and fixed in both of them through a fixing assembly 3. A welding gap is formed at the joint of the two stainless steel flat plate bodies 4;

[0040] A sliding frame 5, which is slidably installed on the top plate of the welding table 1. A driving source for driving the sliding frame 5 to reciprocate horizontally is fixedly installed on the welding table 1. A sliding seat 6 is slidably installed in the sliding frame 5, and a first output source for driving the sliding seat 6 to reciprocate horizontally is built therein. Both the driving source and the first output source are connected to the controller. A fixing frame 8 is rotatably connected in the sliding seat 6, and a linkage assembly for driving the fixing frame 8 to rotate is arranged therein. A welding torch 7 is clamped and fixed on the fixing frame 8; and

[0041] When the sliding seat 6 is at one end in the sliding frame 5, the welding torch 7 is aligned with one welding gap; when the sliding seat 6 is at the other end in the sliding frame 5, the welding torch 7 is aligned with the other welding gap; and when the first output source drives the sliding seat 6 to move from one end to the other end, the linkage assembly will drive the fixing frame 8 to rotate, and the welding torch 7 rotates synchronously.

[0042] In a case of this embodiment, the driving source and the first output source can both be selected from components such as electric cylinders and reciprocating lead screws, or other mechanisms capable of realizing linear reciprocating motion can also be selected. This embodiment does not make specific limitations here; it should be noted that the controller described in the present invention includes a PLC control system, a signal transceiver module, etc. The above technologies are existing technologies, and the present invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical structures and circuit structures, which does not affect the integrity of the present invention.

[0043] In actual application of this embodiment, if the stainless steel flat plate body 4 belongs to the thin plate range, the controller switches to the forward tilt welding mode to Figure 1 As shown, first, two stainless steel flat plate bodies 4 are respectively placed in the first area 103 and the second area 104, and the partition plate 2 is fixed by the fixing component 3. At this time, a welding area is formed at the alignment of the two stainless steel flat plate bodies 4. At this time, the angle between the axis of the welding torch 7 and the welding direction is an acute angle. Then, the controller controls the driving source to drive the sliding frame 5 to move from the right end to the left end of the welding table 1, and the sliding seat 6 located at one end of the sliding frame 5 will move synchronously. At this time, the welding torch 7 installed in the sliding seat 6 will first weld the two stainless steel flat plate bodies 4 in the first area 103; as Figure 5 shown, at this time, the welding of the two stainless steel flat plate bodies 4 in the first area 103 is completed. Then, the controller controls the first output source to drive the sliding seat 6 to move from one end of the sliding frame 5 to the other end, that is, to move the welding torch 7 from the first area 103 to the second area 104. During the moving process, the action of the linkage component will cause the welding torch 7 to rotate counterclockwise; as Figure 6 shown, at this time, the angle between the axis of the welding torch 7 and the welding direction is still an acute angle. The controller controls the driving source to drive the sliding frame 5 to move from left to right, that is, the sliding frame 5 is reset. At this time, the welding torch 7 will weld the two stainless steel flat plate bodies 4 in the second area 104. At the same time, the operator can remove the two welded stainless steel flat plate bodies 4 in the first area 103 and place two new stainless steel flat plate bodies 4; as Figure 7 shown, at this time, the welding of the two stainless steel flat plate bodies 4 in the second area 104 is completed. Then, the controller controls the first output source to drive the sliding seat 6 to reset in the sliding frame 5, that is, to move the welding torch 7 from the second area 104 to the first area 103. During this process, the action of the linkage component will cause the welding torch 7 to rotate clockwise, so as to return to Figure 1 the state shown. By circulating in this way, the batch welding work of the stainless steel flat plate body 4 can be realized. During this process, the welding torch 7 actually rotates clockwise in the welding table 1, and the action of the linkage component can cause the inclination angle of the welding torch 7 to change, ensuring that the angle between the axis of the welding torch 7 and the welding direction is an acute angle, so as to ensure that forward tilt welding is always carried out;

[0044] If the stainless steel flat plate body 4 falls within the range of medium-thick plates, and the controller switches to the backward-inclined welding mode at this time, the driving source is controlled by the control source to move the sliding frame 5 and the sliding seat 6 to Figure 5 the state shown, and when the sliding frame 5 moves for welding from left to right, the welding torch 7 welds the two stainless steel flat plate bodies 4. At this time, the angle between the axis of the welding torch 7 and the welding direction is an obtuse angle, so as to use backward-inclined welding. Then, the welding torch 7 circulates counterclockwise in the welding table 1, and during this process, driven by the linkage assembly, the inclination direction of the welding torch 7 will change, always ensuring that the angle between the axis of the welding torch 7 and the welding direction is an obtuse angle, so as to ensure that backward-inclined welding is always carried out;

[0045] By dividing the inside of the welding table 1 into a first area 103 and a second area 104, and placing two groups of stainless steel flat plate bodies 4 to be welded in the two areas respectively, and selecting forward-inclined welding or backward-inclined welding according to the thickness of the stainless steel flat plate body 4 and the expected welding effect, that is, determining the circulation direction of the welding torch 7 in the welding table 1, and the welding torch 7 can be switched between the two areas by the movement of the sliding seat 6 in the sliding frame 5. At this time, the two stainless steel flat plate bodies 4 in the two areas can be welded alternately. Since the welding directions of the welding torch 7 in the two areas are different, when the welding torch 7 switches positions, the inclination angle of the welding torch 7 can be changed by the action of the linkage assembly, so that the angle between its axis and the welding direction is always the same, thus ensuring that the same welding method is adopted when the welding torch 7 alternates welding, and further ensuring the consistency of the welding effect. And when the welding torch 7 switches positions, the welded stainless steel flat plate body 4 can be replaced, avoiding the problem of reduced efficiency of batch welding caused by too much idle welding time.

[0046] As Figures 2-4 shown, as a preferred embodiment of the present invention, the linkage assembly includes a first bevel gear 9, a second bevel gear 10, a rack plate 11 and a transmission gear 12. The first bevel gear 9, the second bevel gear 10 and the transmission gear 12 are all rotatably installed on the sliding seat 6. The first bevel gear 9 meshes with the second bevel gear 10. The first bevel gear 9 is fixedly connected to the fixed frame 8, the second bevel gear 10 is fixedly connected to the transmission gear 12, and the rack plate 11 is arranged at the bottom of the sliding frame 5 and meshes with the transmission gear 12.

[0047] In actual application of this embodiment, when the controller controls the first output source to drive the sliding seat 6 to move on the sliding frame 5, the meshing relationship between the transmission gear 12 and the rack plate 11 causes the transmission gear 12 to rotate on its own when the sliding seat 6 moves. The rotation of the transmission gear 12 drives the second bevel gear 10 to rotate. Due to the meshing relationship between the second bevel gear 10 and the first bevel gear 9, the first bevel gear 9 rotates synchronously with the second bevel gear 10, and the first bevel gear 9 drives the fixed frame 8 to rotate, so that the welding torch 7 rotates synchronously, changing the inclination angle, and the angle of the welding torch 7 before movement is opposite to that after movement; through the reciprocating translation of the sliding seat 6 in the sliding frame 5, the welding torch 7 can alternate between the first area 103 and the second area 104, and during the movement, through the action of the linkage component, the angle of the welding torch 7 can be changed, so that the inclination angles of the welding torch 7 in the two areas are opposite, thus ensuring that the included angle between the welding torch 7 and the welding gap is consistent during welding and improving the welding quality.

[0048] As Figures 1-3 shown, as a preferred embodiment of the present invention, the rack plate 11 is slidably installed in the sliding frame 5. The sliding frame 5 is internally provided with a second output source for driving the rack plate 11 to reciprocate horizontally. The partition plate 2 is fixedly installed with an ultrasonic sensor, and the ultrasonic sensor is located above the stainless steel flat plate body 4. Both the ultrasonic sensor and the second output source are connected to the controller.

[0049] In one case of this embodiment, the second output source can be an electric cylinder, an electric telescopic rod and other components, or other mechanisms that can achieve linear reciprocating motion. This embodiment does not make specific limitations here; it should be noted that the ultrasonic sensor described in the present invention is a prior art, and the present invention has not improved it. Therefore, it is not necessary to disclose their specific mechanical structures and circuit structures, which does not affect the integrity of the present invention.

[0050] In actual application of this embodiment, before each time the sliding frame 5 is translated to drive the welding torch 7 to weld the two stainless steel flat plate bodies 4, the ultrasonic sensor measures the specific thickness of the stainless steel flat plate body 4 and feeds it back to the controller. According to the specific thickness, the controller controls the second output source to drive the rack plate 11 to translate, so as to actively cause the transmission gear 12 to rotate, and further cause the second bevel gear 10 to drive the first bevel gear 9 to rotate, and the fixed frame 8 and the welding torch 7 to rotate. At this time, the specific included angle between the welding torch 7 and the welding gap will change. The purpose is to select a more appropriate welding angle while selecting a suitable welding method according to the specific thickness of the stainless steel flat plate body 4, ensuring that the greater the thickness of the stainless steel flat plate body 4, the greater the included angle between the welding torch 7 and the welding gap; at the same time, before the controller controls the first output source to drive the sliding seat 6 to translate, it is necessary to control the second output source to drive the rack plate 11 to return to its original position.

[0051] AsFigure 4 As shown in the figure, as a preferred embodiment of the present invention, a contact plate 802 is slidably installed in the fixed frame 8, and a screw rod 801 is threadedly connected thereto. The contact plate 802 abuts against the welding torch 7, and one end of the screw rod 801 abuts against the contact plate 802.

[0052] In actual application of this embodiment, by rotating the screw rod 801 to make it away from the contact plate 802, the clamping of the welding torch 7 by the contact plate 802 is loosened at this time. The welding torch 7 can be removed from the fixed frame 8 and replaced. This structure facilitates the operator to install different types of welding torches 7 on the fixed frame 8 and can select a suitable welding torch 7 for welding operation according to the type of the specific stainless steel flat plate body 4.

[0053] As Figure 1 As shown in the figure, as a preferred embodiment of the present invention, the fixing assembly 3 includes a fixing block 301 and a lifting block 302. The fixing block 301 is fixedly installed on the bottom plate of the welding table 1, and the lifting block 302 is slidably installed on the fixing block 301. An internal output source for driving the lifting block 302 to lift is arranged in the fixing block 301, and the internal output source is connected to the controller.

[0054] In one case of this embodiment, the internal output source can select components such as an electric cylinder and an electric telescopic rod, and other mechanisms capable of realizing lifting movement can also be selected. This embodiment does not make specific limitations here.

[0055] In actual application of this embodiment, when the welding torch 7 finishes welding two stainless steel flat plate bodies 4, the controller controls the internal output source to drive the lifting block 302 to rise, releasing the clamping and fixing of the two welded stainless steel flat plate bodies 4. At this time, the operator can remove the stainless steel flat plate body 4 and place a new stainless steel flat plate body 4 on the welding table 1. Then the controller controls the internal output source to drive the lifting block 302 to descend, fixing the stainless steel flat plate body 4 and waiting for the next welding.

[0056] As Figure 2 As shown in the figure, as a preferred embodiment of the present invention, a slide rail 101 is fixedly installed on the top plate of the welding table 1, and the sliding frame 5 is slidably installed on the slide rail 101. The setting of the slide rail 101 provides a clear and smooth sliding path for the sliding frame 5, ensuring that it can move smoothly on the top plate of the welding table 1.

[0057] As Figure 1 As shown in the figure, as a preferred embodiment of the present invention, cleaning openings 102 are provided on both sides of the welding table 1, and cleaning members are arranged in the cleaning openings 102. The cleaning members cooperate with the head of the welding torch 7.

[0058] In one case of this embodiment, the cleaning member is selected as a wire brush, and the high temperature resistance characteristic of the wire brush is suitable for cleaning the welding torch 7 that has just completed welding work.

[0059] In the actual application of this embodiment, when the first output source drives the sliding seat 6 to translate on the sliding frame 5, the linkage assembly will drive the welding torch 7 to rotate. During the rotation of the welding torch 7, one end of the welding torch 7 will pass through the cleaning port 102 and contact the cleaning member in the cleaning port 102. The cleaning member can remove the spatter and oxide residues on the head of the welding torch 7, which can not only effectively clean and maintain the head of the welding torch 7, but also extend its service life.

[0060] Please refer to Figures 1-7 As shown, the present invention is a welding method for a stainless steel flat plate, and the method is applied to a welding device for a stainless steel flat plate as described in the above embodiment. The method includes the following steps:

[0061] Step S1: First, the operator determines whether the stainless steel flat plate body 4 is suitable for forehand welding or backhand welding, and switches to the corresponding mode through the controller;

[0062] Step S2: Place two stainless steel flat plate bodies 4 in the first area 103 and the second area 104 respectively, and fix the stainless steel flat plate bodies 4 through the fixing assembly 3. At this time, a welding gap is formed at the joint of the two stainless steel flat plate bodies 4;

[0063] Step S3: The controller controls the driving source to drive the sliding frame 5 to move from one end of the welding table 1 to the other end. At this time, the welding torch 7 will weld the welding gap of the two stainless steel flat plate bodies 4 in the first area 103;

[0064] Step S4: The controller controls the first output source to drive the sliding seat 6 to move from one end of the sliding frame 5 to the other end. At this time, the welding torch 7 moves from the first area 103 to the second area 104. The welding torch 7 will rotate under the action of the linkage assembly, so that the inclination direction of the welding torch 7 after the sliding frame 5 moves is opposite to the inclination direction of the welding torch 7 before the sliding frame 5 moves. And at this time, the operator can replace the stainless steel flat plate body 4 that has been welded in the first area 103;

[0065] Step S5: The controller controls the driving source to drive the sliding frame 5 to reset. At this time, the welding torch 7 will weld the welding gap of the two stainless steel flat plate bodies 4 in the second area 104;

[0066] Step S6: Repeat the above steps to alternately weld the stainless steel flat plate bodies 4 in the first area 103 and the second area 104, and the welding methods used are the same.

[0067] Working principle of the present invention: In the above embodiments of the present invention, a welding device for stainless steel flat plates and its welding method are provided. By dividing the welding table 1 into a first area 103 and a second area 104, and placing two groups of stainless steel flat plate bodies 4 to be welded in the two areas respectively, and selecting forward welding or backward welding according to the thickness of the stainless steel flat plate body 4 and the expected welding effect, that is, determining the circulation direction of the welding torch 7 in the welding table 1, and the welding torch 7 can be switched between the two areas by the movement of the sliding seat 6 in the sliding frame 5. At this time, the stainless steel flat plate bodies 4 in the two areas can be welded alternately. Since the welding directions of the welding torch 7 in the two areas are different, the inclination angle of the welding torch 7 can be changed by the action of the linkage component when the welding torch 7 switches positions, so that the angle between its axis and the welding direction is always the same, thus ensuring that the same welding method is adopted when the welding torch 7 alternates welding, and further ensuring the consistency of the welding effect. Moreover, when the welding torch 7 switches positions, the welded stainless steel flat plate body 4 can be replaced.

[0068] The above has described a detailed description of an embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A welding device for a stainless steel flat plate, characterized in that, Comprising: A soldering table (1), on the bottom plate of the soldering table (1), a partition (2) is fixedly installed, and a controller is fixedly installed inside the soldering table (1). The partition (2) divides the bottom plate of the soldering table (1) into a first area (103) and a second area (104). The first area (103) and the second area (104) have the same area, and two stainless steel flat plate bodies (4) are clamped and fixed in both of them through fixing components (3). A welding gap is formed at the joint of the two stainless steel flat plate bodies (4); A sliding frame (5), the sliding frame (5) is slidably installed on the top plate of the soldering table (1). A driving source for driving the sliding frame (5) to reciprocate horizontally is fixedly installed on the soldering table (1). A sliding seat (6) is slidably installed inside the sliding frame (5), and a first output source for driving the sliding seat (6) to reciprocate horizontally is built in the sliding frame (5). The driving source and the first output source are both connected to the controller. A fixed frame (8) is rotatably connected inside the sliding seat (6), and a linkage assembly for driving the fixed frame (8) to rotate is arranged inside the sliding seat (6). A welding torch (7) is clamped and fixed on the fixed frame (8); and When the sliding seat (6) is at one end inside the sliding frame (5), the welding torch (7) is aligned with one welding gap; when the sliding seat (6) is at the other end inside the sliding frame (5), the welding torch (7) is aligned with the other welding gap; and when the first output source drives the sliding seat (6) to move from one end to the other end, the linkage assembly will drive the fixed frame (8) to rotate, and the welding torch (7) rotates synchronously; The linkage assembly includes a first bevel gear (9), a second bevel gear (10), a rack plate (11) and a transmission gear (12). The first bevel gear (9), the second bevel gear (10) and the transmission gear (12) are all rotatably installed on the sliding seat (6). The first bevel gear (9) meshes with the second bevel gear (10). The first bevel gear (9) is fixedly connected to the fixed frame (8). The second bevel gear (10) is fixedly connected to the transmission gear (12). The rack plate (11) is arranged at the bottom of the sliding frame (5), and the rack plate (11) meshes with the transmission gear (12).

2. The welding device for a stainless steel flat plate according to claim 1, wherein The rack plate (11) is slidably installed inside the sliding frame (5). A second output source for driving the rack plate (11) to reciprocate horizontally is built in the sliding frame (5). An ultrasonic sensor is fixedly installed on the partition (2). The ultrasonic sensor is located above the stainless steel flat plate body (4). The ultrasonic sensor and the second output source are both connected to the controller.

3. The welding device for a stainless steel flat plate according to claim 1, characterized in that, An abutting plate (802) is slidably installed inside the fixed frame (8), and a screw (801) is threadedly connected to the fixed frame (8). The abutting plate (802) abuts against the welding torch (7), and one end of the screw (801) abuts against the abutting plate (802).

4. A welding device for a stainless steel flat plate according to claim 1, characterized in that, The fixed component (3) includes a fixed block (301) and a lifting block (302). The fixed block (301) is fixedly installed on the bottom plate of the welding table (1), and the lifting block (302) is slidably installed on the fixed block (301). An internal output source for driving the lifting block (302) to lift is arranged in the fixed block (301), and the internal output source is connected to the controller.

5. A welding device for a stainless steel flat plate according to claim 1, characterized in that, The top plate of the welding table (1) is fixedly installed with a slide rail (101), and the sliding frame (5) is slidably installed on the slide rail (101).

6. The welding device for a stainless steel flat plate according to claim 1, wherein, Cleaning openings (102) are formed on both sides of the welding table (1), and cleaning components are arranged in the cleaning openings (102), and the cleaning components cooperate with the head of the welding torch (7).

7. A welding method for a stainless steel flat plate, characterized in that, The method is applied to a welding device for stainless steel flat plates as described in any one of claims 1-6, and the method includes the following steps: Step S1: First, the operator determines whether the stainless steel flat plate body (4) is suitable for forward welding or backward welding, and switches to the corresponding mode through the controller. Step S2: Two stainless steel flat plate bodies (4) are respectively placed in the first area (103) and the second area (104), and the stainless steel flat plate bodies (4) are fixed by the fixed component (3). At this time, a welding gap is formed at the joint of the two stainless steel flat plate bodies (4). Step S3: The controller controls the drive source to drive the sliding frame (5) to move from one end of the welding table (1) to the other end. At this time, the welding torch (7) will weld the welding gap of the two stainless steel flat plate bodies (4) in the first area (103). Step S4: The controller controls the first output source to drive the sliding seat (6) to move from one end of the sliding frame (5) to the other end. At this time, the welding torch (7) moves from the first area (103) to the second area (104). Under the action of the linkage component, the welding torch (7) will rotate, so that the inclination direction of the welding torch (7) after the sliding frame (5) moves is opposite to the inclination direction of the welding torch (7) before the sliding frame (5) moves. And at this time, the operator can replace the stainless steel flat plate body (4) that has been welded in the first area (103). Step S5: The controller controls the drive source to drive the sliding frame (5) to reset. At this time, the welding torch (7) will weld the welding gap of the two stainless steel flat plate bodies (4) in the second area (104). Step S6: Repeat the above steps to alternately weld the stainless steel flat plate bodies (4) in the first area (103) and the second area (104), and the welding methods used are the same.

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