Seam welder for producing brake shoes

Abstract

The invention relates to the technical field of roll welding equipment, and particularly discloses a roll welding machine for producing brake shoes. The top face of the workbench is rotationally connected with a first rotating shaft through a supporting frame. A first motor is mounted on the outer side wall of the supporting frame; the output end of the first motor is coaxially and fixedly connected with one end of the first rotating shaft; a rolling disc is arranged on the outer side wall of the first rotating shaft; a groove is formed in the outer circumferential surface of the rolling disc; a roll welding mechanism located at the top of the rolling disc is arranged on the top face of the workbench. A treatment box capable of treating welding waste gas is fixedly connected to the top face of the workbench. A gas suction mechanism capable of conveying welding waste gas into the treatment box is arranged at the top of the first rotating shaft; when the seam welding mechanism welds the workpiece, the gas suction mechanism conveys waste gas generated in the welding process into the treatment box to be treated, and the possibility that the welding waste gas directly escapes into the environment to cause pollution is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of roll welding equipment, in particular to a roll welding machine for producing brake shoes. Background Art

[0002] Roll welding machine is a kind of welding equipment, mainly used for welding thin plate materials. Its working principle is to use a pair of roller electrodes instead of the cylindrical electrodes for spot welding. The workpiece moves between the rollers to produce a sealed weld with overlapping molten cores to weld the workpiece together. In the production process of brake shoes, the belly plate and wing plate need to be roll welded by a roll welding machine.

[0003] In the prior art, when a seam welding machine performs seam welding on a workpiece, welding waste gas from the seam welding process will directly escape into the environment of the work site. The harmful gases in the welding waste gas will not only pollute the environment but also harm the health of the on-site workers. Summary of the invention

[0004] The present application provides a roll welding machine for producing brake shoes, which can collect and process the waste gas generated during the roll welding process, thereby reducing the possibility of the waste gas directly escaping into the environment and causing pollution.

[0005] The present application provides a rolling welding machine for producing brake shoes, which adopts the following technical solution: A roll welding machine for producing brake shoes comprises a workbench; the top surface of the workbench is rotatably connected to a first rotating shaft through a support frame; a first motor is installed on the outer wall of the support frame; the output end of the first motor is coaxially fixedly connected to one end of the first rotating shaft; a roller is coaxially arranged on the outer wall of the first rotating shaft; a groove for inserting a web is provided on the outer circumferential surface of the roller; a roll welding mechanism is arranged on the top of the roller on the top of the workbench; the roll welding mechanism can weld wing plates and webs; a treatment box for treating welding waste gas is fixedly connected to the top surface of the workbench; an air suction mechanism for conveying welding waste gas into the treatment box is arranged on the top of the first rotating shaft.

[0006] By adopting the above technical scheme, the belly plate is inserted into the groove on the outer peripheral surface of the roller and clamped, the wing plate is manually held and placed on the top of the roller to contact the belly plate, and pressure is applied to the wing plate through the rolling welding mechanism and current is introduced into the contact area between the belly plate and the wing plate, and the first motor is started to drive the first rotating shaft and the roller to rotate, so that the wing plate is curled and firmly combined with the belly plate, thereby realizing the rolling welding of the belly plate and the wing plate. During the rolling welding of the belly plate and the wing plate, the suction mechanism transports the welding waste gas generated during the rolling welding process to the treatment box for treatment, thereby reducing the possibility of the welding waste gas directly escaping into the environment and causing pollution, and protecting the health of on-site workers.

[0007] Preferably, the roll welding mechanism includes an equipment base, a second motor and a roller electrode; the equipment base is fixedly connected to the top surface of the workbench, and a cylinder is vertically installed on the outer side wall of the equipment base; the second motor is installed on the output end of the cylinder, and the output end of the second motor is coaxially fixed with a second rotating shaft coaxial with the first rotating shaft; the roller electrode is coaxially installed on the outer side wall of the second rotating shaft, and the roller electrode is located on the top of the roller.

[0008] By adopting the above technical scheme, when the web and wing plate are roll-welded, the air cylinder is started to drive the second motor and the roller electrode to move downward, and pressure is applied to the wing plate through the roller electrode and current is introduced into the contact area between the web and the wing plate for welding. The first motor and the second motor are started to rotate the roller plate and the roller electrode. In the process of the roller driving the web to rotate, the wing plate curls up and is firmly combined with the web through the welding of the roller electrode, thereby completing the roll-welded work of the web and the wing plate.

[0009] Preferably, the air suction mechanism includes an air intake pipe and a driving motor; the air intake pipe is installed on the top surface of the workbench through a supporting plate, the air intake pipe is located at the top of the first rotating shaft and is coaxial with the first rotating shaft, and the end of the air intake pipe facing the roller is an open end; the driving motor is installed on the outer wall of the air intake pipe away from the open end, and the output end of the driving motor is coaxially fixed with a rotating shaft extending into the air intake pipe; fan blades are coaxially fixed to the outer wall of the rotating shaft; a connecting pipe connecting the air intake pipe and the processing box is provided on the outer wall of the air intake pipe away from the open end.

[0010] By adopting the above technical solution, when the belly plate and the wing plate are roll welded, the drive motor is started to drive the rotating shaft and the fan blades to rotate, thereby generating negative pressure at the open end of the air inlet pipe. The exhaust gas generated during the roll welding process is sucked into the air inlet pipe driven by the airflow, and the welding exhaust gas is transported to the treatment box through the connecting pipe, thereby realizing the transportation of the welding exhaust gas and reducing the possibility of the welding exhaust gas directly escaping into the environment and causing pollution.

[0011] Preferably, a filter screen and an activated carbon plate are vertically mounted on the inner side wall of the treatment box; the activated carbon plate is located on the side of the filter screen away from the connecting pipe; and an opening is provided on the side wall of the treatment box on the side of the activated carbon plate away from the filter screen.

[0012] By adopting the above technical scheme, the filter and activated carbon plate in the treatment box will filter and purify the exhaust gas transported to the treatment box in turn. The filter will filter the impurity particles mixed in the exhaust gas, and the activated carbon plate will adsorb and purify the harmful gases in the exhaust gas. The exhaust gas treated by the filter and the activated carbon plate will be discharged to the external environment through the opening, thereby reducing the possibility of welding exhaust gas directly escaping into the environment and causing pollution.

[0013] Preferably, a reciprocating screw located on the side of the filter away from the activated carbon plate is vertically rotatably connected on the inner wall of the processing box; a slide plate that cooperates with the threaded transmission of the reciprocating screw is sleeved on the outer wall of the reciprocating screw; the slide plate is slidably matched with the inner wall of the processing box, and a cleaning brush that contacts the filter is fixedly connected to the side wall of the slide plate close to the filter; a transmission assembly that enables the rotating shaft to drive the reciprocating screw to rotate is provided on the top of the processing box.

[0014] By adopting the above technical solution, when the rotating shaft drives the fan blades to rotate to suck the welding exhaust gas, the rotating shaft drives the reciprocating screw to rotate through the transmission assembly and causes the slide plate to slide back and forth in the vertical direction. During the sliding process of the slide plate, the cleaning brush cleans the filter, causing the foreign particles adhering to the filter to fall off, reducing the possibility of the filter mesh being blocked, so that the filter can better filter the exhaust gas.

[0015] Preferably, the transmission assembly comprises a transmission shaft, a first pulley, a second pulley and a belt; the transmission shaft is horizontally rotatably connected to the top surface of the processing box, the transmission shaft is coaxial with the rotating shaft, and a first bevel gear is coaxially fixed to the outer side wall of the transmission shaft; the top end of the reciprocating screw is coaxially fixed with a second bevel gear located at the top of the processing box and meshing with the first bevel gear; the first pulley is coaxially fixed to the outer side wall of the end of the rotating shaft located outside the air intake pipe; the second pulley is coaxially fixed to the outer side wall of the transmission shaft; the belt is sleeved on the outside of the first pulley and the second pulley, and the belt links the first pulley and the second pulley.

[0016] By adopting the above technical solution, during the rotation of the rotating shaft, the transmission shaft is driven to rotate through the cooperation of the first pulley, the second pulley and the belt. During the rotation of the transmission shaft, the reciprocating screw is driven to rotate through the meshing cooperation of the first bevel gear and the second bevel gear, thereby realizing the transmission of kinetic energy during the rotation of the rotating shaft.

[0017] Preferably, the support frame is provided with an electrochemical sensor located on one side of the roller for detecting welding exhaust gas; a controller is also provided on the top surface of the workbench; the electrochemical sensor is electrically connected to the controller; and the controller is electrically connected to the drive motor.

[0018] By adopting the above technical scheme, the electrochemical sensor can be used to detect the concentration of harmful gases in welding exhaust gas and transmit a signal to the controller so that the controller adjusts the speed of the drive motor; when the concentration of harmful gases in the welding exhaust gas is too high, the drive motor drives the fan blades to increase the speed so as to quickly draw the welding exhaust gas into the ventilation pipe. When the concentration of harmful gases in the welding exhaust gas decreases, the drive motor drives the fan blades to decrease the speed, thereby reducing the noise and wear of the fan blades during operation and increasing the service life of the fan blades.

[0019] Preferably, a first sealing ring sleeved on the outside of the rotating shaft is fixedly connected to the end surface of the air inlet pipe away from the open end; the first sealing ring is coaxially rotatable with the rotating shaft, and a first sealing ring tightly attached to the outer wall of the rotating shaft is fixedly connected to the inner wall of the first sealing ring.

[0020] By adopting the above technical solution, the setting of the first sealing ring and the first sealing ring ensures good air tightness at the contact point between the rotating shaft and the end face of the intake pipe, thereby reducing the possibility of exhaust gas leakage through the gap at the contact point between the rotating shaft and the end face of the intake pipe, and prompting the exhaust gas to enter the treatment box through the connecting pipe for treatment.

[0021] Preferably, the top surface of the processing box is fixedly connected with a second sealing ring sleeved on the outside of the reciprocating screw; the second sealing ring is coaxially rotatably matched with the reciprocating screw, and the inner side wall of the second sealing ring is fixedly connected with a second sealing ring tightly attached to the outer wall of the reciprocating screw.

[0022] By adopting the above technical solution, the setting of the second sealing ring and the second sealing ring ensures good air tightness at the contact point between the top end of the reciprocating screw and the top wall of the processing box, reducing the possibility of exhaust gas leakage through the gap at the contact point between the reciprocating screw and the top wall of the processing box.

[0023] In summary, this application has the following beneficial effects: 1. During the roll welding process, the drive motor is started to drive the rotating shaft and the fan blades to rotate, so that negative pressure is generated at the open end of the air inlet pipe facing the welding position. The welding waste gas generated during the roll welding of the web and the wing plate is sucked into the air inlet pipe driven by the air flow, and is transported to the treatment box through the connecting pipe for treatment and then discharged, reducing the possibility of direct dissipation of welding waste gas into the environment and causing pollution; 2. When the welding waste gas is transported to the treatment box, the filter first filters the waste gas to remove the impurity particles mixed in the waste gas, and the activated carbon plate then adsorbs the harmful gases in the waste gas. The treated waste gas then escapes to the outside through the opening, which facilitates the waste gas treatment, reduces the possibility of waste gas polluting the processing site environment, and protects the health of on-site workers; 3. When the rotating shaft drives the fan blades to rotate and suck the exhaust gas, the rotating shaft drives the reciprocating screw to rotate through the transmission assembly, so that the slide plate drives the cleaning brush to slide back and forth in the vertical direction to clean the surface of the filter, causing the foreign particles adhering to the filter to fall off, reducing the possibility of the filter mesh being blocked, so that the filter can better filter the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of a roll welding machine for producing brake shoes; Figure 2 It is a schematic diagram of the matching structure of the first rotating shaft and the roller on the support frame in the present application; Figure 3 It is a structural schematic diagram of the roll welding mechanism of the present application; Figure 4 It is a schematic diagram of the internal structure of the processing box in this application; Figure 5 is a schematic diagram of the air suction mechanism in the present application; Figure 6 yes Figure 5 The enlarged view of point A in the middle; Figure 7 It is a schematic diagram of the matching structure of the rotating shaft, the transmission shaft and the belt in this application; Figure 8 It is a schematic diagram of the matching structure of the reciprocating screw and the second sealing ring in the present application.

[0025] Explanation of the accompanying drawings: 1. workbench; 11. electrochemical sensor; 12. controller; 2. first rotating shaft; 21. first motor; 3. roller; 31. groove; 4. rolling welding mechanism; 41. equipment base; 42. second motor; 421. second rotating shaft; 43. roller electrode; 44. cylinder; 5. processing box; 51. filter; 52. activated carbon plate; 53. opening; 54. reciprocating screw; 55. slide plate; 56. cleaning brush; 57. transmission assembly; 571. transmission shaft; 572. first pulley; 573. second pulley; 574. belt; 575. first bevel gear; 576. second bevel gear; 58. second sealing ring; 581. second sealing ring; 6. suction mechanism; 61. intake pipe; 62. drive motor; 63. rotating shaft; 64. fan blade; 65. connecting pipe; 66. first sealing ring; 661. first sealing ring. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0027] The present invention discloses a rolling welding machine for producing brake shoes, such as Figure 1 , Figure 2 and Figure 3As shown, it includes a workbench 1, a first rotating shaft 2, a first motor 21, a roller 3 and a roll welding mechanism 4; the first rotating shaft 2 is horizontally rotatably connected to the top surface of the workbench 1 through a support frame, the first motor 21 is horizontally installed on the outer wall of the support frame, the output end of the first motor 21 is coaxially fixed to one end of the first rotating shaft 2, the roller 3 is coaxially fixed to the outer wall of the first rotating shaft 2, an annular groove 31 is opened on the outer circumference of the roller 3, the web can be inserted and clamped on the inner wall of the groove 31, and the roll welding mechanism 4 is arranged on the top surface of the workbench 1 The rolling welding mechanism 4 includes an equipment base 41, a second motor 42, a roller electrode 43 and a cylinder 44. The equipment base 41 is fixedly connected to the top surface of the workbench 1, the cylinder 44 is vertically installed on the outer wall of the equipment base 41, the second motor 42 is horizontally installed on the output end of the cylinder 44, the second motor 42 is located on the top of the roller 3, and the output end of the second motor 42 is coaxially fixed with a second rotating shaft 421 coaxial with the first rotating shaft 2, and the roller electrode 43 is coaxially fixedly connected to the outer wall of the second rotating shaft 421 corresponding to the top of the roller 3.

[0028] The web is inserted into the groove 31 on the outer surface of the roller 3 and clamped, and the wing plate is manually held and placed on the top of the roller 3 to contact the web. The cylinder 44 is started to drive the second motor 42 and the roller electrode 43 to move downward, so that the roller electrode 43 is pressed on the wing plate. The roller electrode 43 introduces current into the contact area between the web and the wing plate for welding, and the roller 3 and the roller electrode 43 are driven to rotate by starting the first motor 21 and the second motor 42. When the roller 3 drives the web to rotate, the wing plate curls with the rotation of the roller 3 and is firmly combined with the web under the action of the roller electrode 43.

[0029] like Figure 1 and Figure 4 As shown, a treatment box 5 located on one side of the first rotating shaft 2 is fixedly connected to the top surface of the workbench 1, and a filter screen 51 and an activated carbon plate 52 are vertically installed on the inner wall of the treatment box 5. The activated carbon plate 52 is located on one side of the filter screen 51, and an opening 53 connected to the external environment is opened on the side wall of the treatment box 5 on the side of the activated carbon plate 52 away from the filter screen 51. The top surface of the workbench 1 is also provided with a suction mechanism 6 located on the top of the first rotating shaft 2, and the suction mechanism 6 can transport the welding waste gas to the cavity of the filter screen 51 in the treatment box 5 away from the activated carbon plate 52.

[0030] During the roll welding of the web and the wing plate, the suction mechanism 6 transports the welding waste gas generated during the roll welding process to the treatment box 5, the filter 51 first filters the waste gas to remove the impurity particles mixed in the waste gas, and the activated carbon plate 52 then adsorbs the harmful gas in the waste gas. The treated waste gas is then dissipated to the outside through the opening 53, thereby reducing the possibility of air pollution caused by the direct dissipation of the waste gas without treatment.

[0031] like Figure 1 , Figure 4 and Figure 5As shown, the air suction mechanism 6 includes an air inlet pipe 61, a driving motor 62, a fan blade 64 and a connecting pipe 65. The air inlet pipe 61 is horizontally fixed to the top surface of the workbench 1 through a supporting plate. The air inlet pipe 61 is located at the top of the first rotating shaft 2 and is coaxial with the first rotating shaft 2. The end of the air inlet pipe 61 close to the roller 3 is an open end and horizontally faces the welding position of the web and the wing plate. The driving motor 62 is horizontally installed on the outer side wall of the air inlet pipe 61 away from the open end through a connecting plate. The output end of the driving motor 62 is coaxially fixed to the rotating shaft 63 extending into the air inlet pipe 61. The rotating shaft 63 is coaxially arranged with the air inlet pipe 61. The fan blade 64 is coaxially fixed to the outer side wall of the rotating shaft 63 close to the open end. One end of the connecting pipe 65 is fixed to the outer side wall of the air inlet pipe 61 away from the open end. The other end of the connecting pipe 65 is fixed to the top wall of the filter screen 51 on the treatment box 5 away from the activated carbon plate 52. The connecting pipe 65 connects the air inlet pipe 61 with the treatment box 5.

[0032] During the roll welding process of the web and the wing plate, the drive motor 62 is started to drive the rotating shaft 63 and the fan blades 64 to rotate, causing negative pressure to be generated at the open end of the air inlet pipe 61. The welding waste gas generated during the roll welding of the web and the wing plate is sucked into the air inlet pipe 61 driven by the airflow and transported to the treatment box 5 through the connecting pipe 65, thereby facilitating the transportation of the welding waste gas.

[0033] like Figure 5 and Figure 6 As shown, a first sealing ring 66 which is sleeved on the outside of the rotating shaft 63 is fixedly connected to the end surface of the intake pipe 61 away from the open end. The first sealing ring 66 rotates coaxially with the rotating shaft 63. A first sealing ring 661 which rotates tightly with the outer wall of the rotating shaft 63 is fixedly connected to the inner wall of the first sealing ring 66.

[0034] The arrangement of the first sealing ring 66 and the first sealing ring 661 ensures good air sealing between the contact portion between the rotating shaft 63 and the end surface of the intake pipe 61, so as to better transport the exhaust gas for treatment and reduce the possibility of the exhaust gas leaking to the outside without being treated.

[0035] like Figure 1 , Figure 2 and Figure 5 As shown, an electrochemical sensor 11 located on one side of the roller 3 is arranged on the top surface of the support frame through a support rod. The electrochemical sensor 11 can be used to detect welding exhaust gas. A controller 12 is also arranged on the top surface of the workbench 1. The output end of the electrochemical sensor 11 is electrically connected to the input end of the controller 12, and the output end of the controller 12 is electrically connected to the drive motor 62. The controller 12 controls the speed of the drive motor 62.

[0036] The electrochemical sensor 11 can detect the concentration of harmful gases in the exhaust gas and enable the controller 12 to adjust the speed of the drive motor 62. When the concentration of harmful gases in the welding exhaust gas is too high, the drive motor 62 drives the fan blades 64 to rotate at an increased speed so as to quickly draw the exhaust gas into the ventilation pipe. When the concentration of harmful gases decreases, the drive motor 62 drives the fan blades 64 to rotate at a reduced speed, thereby reducing the degree of wear of the fan blades 64 during rotation and increasing the service life of the fan blades 64.

[0037] like Figure 1 , Figure 4 and Figure 5 As shown, a reciprocating screw 54 located on the side of the filter 51 away from the activated carbon plate 52 is vertically rotatably connected on the inner wall of the processing box 5, and a slide plate 55 that cooperates with the reciprocating screw 54 in threaded transmission is horizontally sleeved on the outer wall of the reciprocating screw 54. The slide plate 55 slides with the inner wall of the processing box 5, and a cleaning brush 56 that contacts the filter 51 is fixedly connected to the side wall of the slide plate 55 close to the filter 51. The top end of the reciprocating screw 54 extends to the top of the processing box 5, and the top of the reciprocating screw 54 is provided with a transmission assembly 57 located at the top of the processing box 5, which can drive the reciprocating screw 54 to rotate by the rotating shaft 63.

[0038] During the rotation process, the rotating shaft 63 drives the reciprocating screw 54 to rotate through the transmission assembly 57, so that the slide plate 55 drives the cleaning brush 56 to reciprocate in the vertical direction to clean the filter 51, reducing the possibility of the mesh of the filter 51 being blocked, and ensuring the filtering effect of the filter 51 on the exhaust gas.

[0039] like Figure 1 , Figure 4 and Figure 7 As shown, the transmission assembly 57 includes a transmission shaft 571, a first pulley 572, a second pulley 573, a belt 574, a first bevel gear 575 and a second bevel gear 576. The transmission shaft 571 is horizontally rotatably connected to the top surface of the processing box 5 through a pair of straight plates. The transmission shaft 571 is coaxial with the rotating shaft 63. The first pulley 572 is coaxially fixed to the outer side wall of the end of the rotating shaft 63 close to the driving motor 62. The first pulley 572 is located outside the intake pipe 61, and the second pulley 573 is coaxially fixed to the outer side wall of the end of the rotating shaft 63 close to the driving motor 62. The belt 574 is tensioned and sleeved on the outside of the first pulley 572 and the second pulley 573 to link the first pulley 572 and the second pulley 573. The first bevel gear 575 is coaxially fixed to the outer wall of the transmission shaft 571 near the top of the reciprocating screw rod 54. The second bevel gear 576 is coaxially fixed to the outer wall of the top end of the reciprocating screw rod 54 extending outside the processing box 5. The second bevel gear 576 is meshed with the first bevel gear 575.

[0040] Through the cooperation of the first pulley 572, the second pulley 573 and the belt 574, the rotating shaft 63 drives the transmission shaft 571 to rotate during the rotation process. During the rotation of the transmission shaft 571, the reciprocating screw 54 is driven to rotate through the meshing cooperation of the first bevel gear 575 and the second bevel gear 576, so as to realize the transmission of kinetic energy during the rotation of the rotating shaft 63.

[0041] like Figure 4 and Figure 8 As shown, the top surface of the processing box 5 is fixedly connected to the position corresponding to the reciprocating screw 54. The second sealing ring 58 is coaxially sleeved outside the reciprocating screw 54 and rotatably cooperates with the reciprocating screw 54. The inner side wall of the second sealing ring 58 is fixedly connected with a second sealing ring 581 that tightly rotates with the outer wall of the reciprocating screw 54. The arrangement of the second sealing ring 58 and the second sealing ring 581 ensures good air tightness at the contact portion between the reciprocating screw 54 and the top wall of the treatment box 5, thereby reducing the possibility of accidental leakage of exhaust gas.

[0042] Working principle: insert the web into the groove 31 on the outer peripheral surface of the roller 3 and clamp it, manually hold the wing plate and place it on the top of the roller 3 to contact the web, start the cylinder 44 to drive the second motor 42 and the roller electrode 43 to move downward, so that the roller electrode 43 is pressed on the wing plate, and when the roll welding work is performed, the roller electrode 43 introduces current into the contact area between the web and the wing plate for welding, and drives the roller 3 and the roller electrode 43 to rotate by starting the first motor 21 and the second motor 42. When the roller 3 drives the web to rotate, the wing plate curls with the rotation of the roller 3 and is firmly combined with the web under the cooperation of the roller electrode 43, thereby completing the roll welding work between the web and the wing plate; During the roll welding process, the drive motor 62 is started to drive the rotating shaft 63 and the fan blades 64 to rotate, so that negative pressure is generated at the open end of the air inlet pipe 61 facing the welding position. The welding waste gas generated during the roll welding of the web and the wing plate is sucked into the air inlet pipe 61 driven by the air flow and transported to the treatment box 5 through the connecting pipe 65. The filter 51 arranged in the treatment box 5 first filters the waste gas to remove the impurity particles mixed in the waste gas. The activated carbon plate 52 arranged in the treatment box 5 then adsorbs the harmful gas in the waste gas and purifies the waste gas. The filtered and purified waste gas escapes into the external environment through the opening 53, thereby reducing the possibility of the welding waste gas directly escaping into the environment and causing pollution. When the rotating shaft 63 drives the fan blades 64 to rotate to suck the welding exhaust gas, the rotating shaft 63 drives the transmission shaft 571 to rotate through the cooperation of the first pulley 572, the second pulley 573 and the belt 574. During the rotation process, the transmission shaft 571 drives the reciprocating screw rod 54 to rotate through the meshing cooperation of the first bevel gear 575 and the second bevel gear 576, so that the slide plate 55 drives the cleaning brush 56 to reciprocate in the vertical direction to clean the filter 51, so as to cause the foreign particles adhered to the filter 51 to fall off, reduce the possibility of the mesh of the filter 51 being blocked, and ensure the filtering effect of the filter 51 on the exhaust gas.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A seam welding machine for producing brake shoes, characterized in that: The invention comprises a workbench (1); the top surface of the workbench (1) is rotatably connected to a first rotating shaft (2) via a support frame; a first motor (21) is mounted on the outer wall of the support frame; the output end of the first motor (21) is coaxially fixedly connected to one end of the first rotating shaft (2); a roller (3) is coaxially arranged on the outer wall of the first rotating shaft (2); a groove (31) is provided on the outer circumferential surface of the roller (3) for inserting a web; a roll welding mechanism (4) is arranged on the top surface of the workbench (1) and is located on the top of the roller (3); the roll welding mechanism (4) can weld the wing plate and the web; a treatment box (5) for treating welding waste gas is fixedly connected to the top surface of the workbench (1); and an air suction mechanism (6) for conveying welding waste gas to the treatment box (5) is arranged on the top of the first rotating shaft (2).

2. A seam welding machine for producing brake shoes according to claim 1, characterized in that: The roll welding mechanism (4) comprises an equipment base (41), a second motor (42) and a roller electrode (43); the equipment base (41) is fixedly connected to the top surface of the workbench (1), and a cylinder (44) is vertically mounted on the outer side wall of the equipment base (41); the second motor (42) is mounted on the output end of the cylinder (44), and the output end of the second motor (42) is coaxially fixedly connected to a second rotating shaft (421) coaxial with the first rotating shaft (2); the roller electrode (43) is coaxially mounted on the outer side wall of the second rotating shaft (421), and the roller electrode (43) is located on the top of the rolling plate (3).

3. A seam welding machine for producing brake shoes according to claim 1, characterized in that: The air suction mechanism (6) comprises an air intake pipe (61) and a driving motor (62); the air intake pipe (61) is mounted on the top surface of the workbench (1) via a supporting plate, the air intake pipe (61) is located at the top of the first rotating shaft (2) and is coaxial with the first rotating shaft (2), and the end of the air intake pipe (61) facing the roller (3) is an open end; the driving motor (62) is mounted on the outer wall of the air intake pipe (61) away from the open end, and the output end of the driving motor (62) is coaxially fixedly connected with a rotating shaft (63) extending into the air intake pipe (61); a fan blade (64) is coaxially fixedly connected to the outer wall of the rotating shaft (63); and a connecting pipe (65) connecting the air intake pipe (61) and the processing box (5) is provided on the outer wall of the air intake pipe (61) away from the open end.

4. A seam welding machine for producing brake shoes according to claim 3, characterized in that: A filter screen (51) and an activated carbon plate (52) are vertically mounted on the inner side wall of the treatment box (5); the activated carbon plate (52) is located on a side of the filter screen (51) away from the connecting pipe (65); and an opening (53) is provided on the side wall of the treatment box (5) on a side of the activated carbon plate (52) away from the filter screen (51).

5. A seam welding machine for producing brake shoes according to claim 4, characterized in that: A reciprocating screw (54) located on the side of the filter (51) away from the activated carbon plate (52) is vertically rotatably connected to the inner side wall of the treatment box (5); a slide plate (55) threadedly engaged with the reciprocating screw (54) is sleeved on the outer side wall of the reciprocating screw (54); the slide plate (55) is slidably engaged with the inner side wall of the treatment box (5), and a cleaning brush (56) in contact with the filter (51) is fixedly connected to the side wall of the slide plate (55) close to the filter (51); and a transmission assembly (57) is provided on the top of the treatment box (5) so as to enable the rotating shaft (63) to drive the reciprocating screw (54) to rotate.

6. A seam welding machine for producing brake shoes according to claim 5, characterized in that: The transmission assembly (57) comprises a transmission shaft (571), a first pulley (572), a second pulley (573) and a belt (574); the transmission shaft (571) is horizontally rotatably connected to the top surface of the processing box (5), the transmission shaft (571) is coaxial with the rotating shaft (63), and a first bevel gear (575) is coaxially fixedly connected to the outer wall of the transmission shaft (571); the top end of the reciprocating screw rod (54) is coaxially fixedly connected to a first bevel gear (575) located at the top of the processing box (5) and coaxially connected to the first bevel gear (575). The bevel gear (575) is meshed with a second bevel gear (576); the first pulley (572) is coaxially fixed to the outer wall of the end of the rotating shaft (63) located outside the intake pipe (61); the second pulley (573) is coaxially fixed to the outer wall of the transmission shaft (571); the belt (574) is sleeved on the outside of the first pulley (572) and the second pulley (573), and the belt (574) enables the first pulley (572) and the second pulley (573) to be linked.

7. A seam welding machine for producing brake shoes according to claim 3, characterized in that: The support frame is provided with an electrochemical sensor (11) located on one side of the roller (3) and used for detecting welding exhaust gas; a controller (12) is also provided on the top surface of the workbench (1); the electrochemical sensor (11) is electrically connected to the controller (12); and the controller (12) is electrically connected to the drive motor (62).

8. A seam welding machine for producing brake shoes according to claim 3, characterized in that: A first sealing ring (66) sleeved on the outside of the rotating shaft (63) is fixedly connected to the end surface of the air inlet pipe (61) away from the open end; the first sealing ring (66) and the rotating shaft (63) are coaxially rotatable, and a first sealing ring (661) tightly attached to the outer wall of the rotating shaft (63) is fixedly connected to the inner wall of the first sealing ring (66).

9. A seam welding machine for producing brake shoes according to claim 5, characterized in that: The top surface of the processing box (5) is fixedly connected to a second sealing ring (58) sleeved on the outside of the reciprocating screw rod (54); the second sealing ring (58) and the reciprocating screw rod (54) are coaxially rotatable, and the inner side wall of the second sealing ring (58) is fixedly connected to a second sealing ring (581) tightly attached to the outer wall of the reciprocating screw rod (54).

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