A pinch roller device for a hot-dip galvanizing machine welding machine and its positioning configuration method

Abstract

The present application relates to a pinch roller device for a hot-dip galvanizing unit welding machine and its positioning configuration method. The device includes a front pressure roller mechanism for controlling the up and down positioning of the leading strip; a rear pressure roller mechanism for controlling the up and down positioning of the trailing strip; a front guide mechanism for contacting the left and right sides of the leading strip, including two front positioning assemblies relatively arranged on both sides of the leading strip and two front power assemblies for driving the front positioning assemblies to translate laterally; a rear guide mechanism for contacting the left and right sides of the leading strip, including two rear positioning assemblies relatively arranged on both sides of the trailing strip and two rear power assemblies for driving the rear positioning assemblies to translate laterally; and a lateral positioning control system for detecting the translation position of the front positioning assembly and controlling the rear positioning assembly to translate to the corresponding axial position. The present application can perform multi-directional positioning control on the leading and trailing strips, thereby improving the welding accuracy and quality of the welding machine.

Description

Technical Field

[0001] The present application relates to the technical field of metal hot-dip galvanizing process, and in particular to a pinch roller device for a hot-dip galvanizing machine welding machine and a positioning configuration method thereof. Background Art

[0002] The hot-dip galvanizing line consists of three sections: pre-treatment, online equipment, and auxiliary equipment. Pre-treatment includes degreasing, cleaning, pickling, storage, and various solvent tanks. Online equipment includes loading, feeding and alignment, galvanizing machines, zinc pots, magnetic rollers, external and internal blowing, air cooling inspection and drying furnaces, and galvanizing furnaces. Auxiliary equipment, including roller printing, threading, bundling, and auxiliary racks, is arranged separately. Steel coils are hoisted onto the line's inlet saddle by a crane and loaded onto the line's uncoiler by a coil trolley. After uncoiling on the uncoiler, the unqualified strip head is sheared off at the inlet. The coil is then transported by pinch rollers to the welder, where it is welded to the tail of the previous coil. The welded strip passes through an inlet looper and is then transported to the cleaning section. After alkali cleaning, electrolytic cleaning, rinsing, and drying, the strip enters the annealing furnace section. Since the strip positioning control accuracy cannot meet the process requirements of the welding machine, the welding machine cannot weld normally, which affects the stable operation of the unit to a certain extent. Therefore, it is necessary to accurately position the leading and trailing strips to improve the welding accuracy of the welding machine.

[0003] The hot-dip galvanizing unit in the related art is equipped with a pinch roller device A on the upper and lower channel side equipment and the outlet side equipment of the welding machine. The pinch roller device A on the upper and lower channel sides of the entrance controls the strip head of the subsequent strip, and the pinch roller device A on the outlet side controls the strip tail of the preceding strip; the pinch roller device includes an upper roller, a lower roller, a cylinder, a universal shaft, a variable frequency drive motor and an encoder, wherein a cylinder is provided at both ends of the upper roller, and one end of the upper roller is connected to the variable frequency drive motor through a universal shaft. The variable frequency drive motor controls the opening and closing of the upper roller by controlling the cylinder. The variable frequency drive motor is connected with an encoder, and the lower roller is a passive roller.

[0004] In the above-mentioned related technologies, the strip is clamped by the upper roller and the lower roller pair to realize the positioning control of the leading strip and the following strip. However, by clamping the strip with the upper roller and the lower roller, only precise positioning between the upper and lower surfaces can be achieved. There is a lack of restrictions on the left and right sides of the strip, which causes the leading strip and the following strip to be misaligned left and right or offset in the axis, resulting in the positioning control of the leading strip and the following strip still not meeting the welding requirements, or reducing the welding quality. Summary of the Invention

[0005] The purpose of this application is to provide a pinch roller device for a hot-dip galvanizing machine welding machine and a positioning configuration method thereof, which can position and control the leading strip and the following strip in multiple directions, thereby improving the welding accuracy and welding quality of the welding machine.

[0006] In the first aspect, the present application provides a pinch roller device for a hot dip galvanizing unit welding machine adopts the following technical solution:

[0007] A pinch roller device for a hot dip galvanizing machine welding machine, comprising:

[0008] The front pressure roller mechanism is set at the outlet side of the welding machine and is used to control the up and down positioning of the leading strip;

[0009] The rear pressure roller mechanism is set at the inlet side of the welding machine and is used to control the up and down positioning of the rear strip;

[0010] The front guide mechanism is arranged between the front pressure roller mechanism and the welder, and is used to abut the left and right sides of the leading strip steel. It includes two front positioning assemblies relatively arranged on both sides of the leading strip steel and two front power assemblies that drive the front positioning assemblies to move horizontally.

[0011] The rear guide mechanism is provided between the rear pressure roller mechanism and the welder, and is used to abut the left and right sides of the leading strip, and includes two rear positioning assemblies relatively provided on both sides of the trailing strip, and two rear power assemblies driving the rear positioning assemblies to move laterally; and

[0012] The lateral positioning control system is used to detect the translation position of the front positioning component and control the rear positioning component to translate to the corresponding axial position.

[0013] By adopting the above technical solution, the front pressure roller mechanism positions and fixes the tail end of the leading strip, keeps the end located in the welding machine, and then translates the two front positioning components of the front guide mechanism to both sides of the leading strip, and uses the lateral positioning control system to detect the translation distance of the two front positioning components, and controls the two rear positioning components to also translate the same distance accordingly, so that the front and rear positions of the rear positioning components are relative to the front positioning components, and guide the rear strip to enter between the two rear positioning components, and the rear positioning components guide the rear strip to move forward, and the head end of the rear strip enters the welding machine, and the rear pressure roller mechanism is used to position and fix the head end of the rear strip; with the front positioning components guiding the leading strip and the rear positioning components guiding the rear strip, the leading strip and the rear strip can be positioned more accurately in the welding machine, thereby improving the welding accuracy and welding quality of the welding machine and improving the processing efficiency of hot-dip galvanizing of strips.

[0014] Optionally, the front positioning assembly includes a front push plate arranged along the conveying direction of the strip steel and a plurality of front push wheels arranged on the side of the front push plate facing the strip steel, and grooves are formed on the outer circumferential surfaces of the front push wheels along the circumferential direction, and the strip steel can abut against the grooves;

[0015] A mounting groove is provided on the side of the front push plate facing the strip steel, the opening of the mounting groove faces the strip steel, and both ends of the rotating shaft of the front push wheel are connected to the top wall and the bottom wall of the mounting groove.

[0016] By adopting the above technical solution, the front push wheel is used to abut the edge of the leading strip, and the edge of the leading strip is confined in the groove in the installation groove, which will neither affect the forward conveying of the leading strip nor reduce the conveying resistance. The position of the front positioning component abutting the leading strip is more fixed, the data when measuring the displacement of the front positioning component is more accurate, the translation consistency of the rear positioning component and the front displacement component is higher, and the positioning of the leading strip and the rear strip is more accurate.

[0017] Optionally, a front roller is provided on the bottom wall of the mounting groove, and the rotation axis of the front roller is parallel to the length direction of the mounting groove;

[0018] A front belt pressure plate is rotatably connected to the top wall of the mounting groove. The front belt pressure plate is set as a right-angle plate, and the outer corner is connected to the top wall of the mounting groove through a rotating shaft. A counterweight pressure strip is fixedly connected to the side plate away from the strip steel, and a front pressure roller is rotatably connected to the side plate close to the strip steel, and the rotating axis of the front pressure roller is parallel to the length direction of the mounting groove.

[0019] By adopting the above technical solution, the front roller is supported on the lower surface of the leading strip, so that the contact position between the front push wheel and the leading strip is more stable and will not change; in the process of the front push plate gradually approaching the leading strip, the edge of the leading strip gradually enters the installation groove, and the leading strip first contacts the side plate of the front pressure plate on which the counterweight strip is installed, pushing the front pressure plate to rotate, and the side plate of the front pressure plate on which the counterweight strip is installed rises, and the side plate of the front pressure plate on which the front pressure roller is installed descends, so that the front pressure roller abuts against the upper surface of the leading strip, and cooperates with the support of the leading strip by the front roller, so that the height of the leading strip in the installation groove remains unchanged, and the translation distance measurement of the front positioning component is more accurate.

[0020] Optionally, the front power assembly is configured as one of a cylinder assembly, a motor screw nut assembly, and a motor rack and pinion assembly.

[0021] By adopting the above technical solution, the structure of the front power assembly makes the translation of the front positioning assembly more controllable, reducing the impact on strip transportation.

[0022] Optionally, the structure of the rear positioning assembly is the same as that of the front positioning assembly, and the structure of the rear power assembly is the same as that of the rear power assembly.

[0023] By adopting the above technical solution, the structures of the front pressure roller mechanism and the rear pressure roller mechanism are the same, the translation consistency of the front positioning component and the rear positioning component is higher, and the alignment of the leading strip and the trailing strip is guided more accurately.

[0024] Optionally, the front pressure roller mechanism and the rear pressure roller mechanism have the same structure, both including a lower roller, an upper roller, a driving motor for driving the upper roller to rotate, and a lifting cylinder for driving the upper roller to move up and down. The output shaft of the driving motor is fixedly connected to the rotating shaft of the upper roller, and the piston rod of the lifting cylinder is rotatably connected to the rotating shaft of the upper roller.

[0025] By adopting the above technical solution, the height position of the lower roller remains unchanged, maintaining the conveying height of the strip. The upper roller can be lowered and contacted with the strip under the drive of the lifting cylinder to control the positioning of the strip in the up and down directions, and the drive motor can drive the upper roller to rotate, thereby conveying the leading strip forward.

[0026] Optionally, the lateral positioning control system includes:

[0027] Two displacement sensors, used to sense the movement distance of the two front positioning assemblies when the front positioning assemblies abut against the strip steel, and to send out a sensing signal; and

[0028] A controller, configured to receive two sensing signals from the two displacement sensors and send control signals to the rear power assembly on the same side of the sensing signals;

[0029] The rear power assembly responds to the control signal and controls the rear positioning assembly to translate the same distance as the front positioning assembly.

[0030] By adopting the above technical solution, the two front positioning components are translated, and the two displacement sensors obtain two translation distance values ​​and transmit them to the controller, which controls the corresponding rear positioning components on the same side of the two front positioning components to move the same distance.

[0031] Optionally, the two front positioning assemblies are started in sequence front and back, and come into contact with the steel strip; the two rear positioning assemblies are started in sequence front and back, and come into contact with the steel strip in the opposite order to the two front positioning assemblies.

[0032] By adopting the above technical solution, the two front positioning components are started in sequence front and back to avoid extrusion deformation of the strip and maintain the original width of the strip; the two rear positioning components are started in sequence front and back in reverse order, and the rear positioning component on one side first positions the initial position of the rear strip to avoid the rear strip being pushed off course.

[0033] In the second aspect, the present application provides a method for positioning and configuring a hot-dip galvanizing unit welding machine, which adopts the following technical solution:

[0034] A method for positioning and configuring a hot-dip galvanizing machine assembly welding machine comprises the following steps:

[0035] Start the front pressing roller mechanism to press the tail end of the leading strip tightly so that the tail end of the leading strip is located inside the welding machine;

[0036] The first side front positioning assembly is started, and stops after contacting the leading strip steel. The second side front positioning assembly is then started, and stops after contacting the leading strip steel. Two displacement sensors respectively send out two sensing signals.

[0037] The controller sends a control signal to start the second side rear positioning assembly, which stops after contacting the rear strip steel, and then starts the first side rear positioning assembly, which stops after contacting the rear strip steel;

[0038] Start the rear pressure roller mechanism to press the head end of the rear strip, and pull the head end of the rear strip forward into the welding machine to connect with the tail end of the leading strip.

[0039] In summary, this application includes at least one of the following beneficial technical effects:

[0040] 1. The front pressure roller mechanism positions and fixes the tail end of the leading strip, keeps the end located in the welding machine, and then translates the two front positioning components of the front guide mechanism to both sides of the leading strip, and uses the lateral positioning control system to detect the translation distance of the two front positioning components, and controls the two rear positioning components to translate the same distance accordingly, so that the front and rear positions of the rear positioning components are relative to those of the front positioning components, and guide the following strip to enter between the two rear positioning components. The rear positioning components guide the following strip to move forward, and the head end of the following strip enters the welding machine, and the rear pressure roller mechanism is used to position and fix the head end of the following strip; with the front positioning components guiding the leading strip and the rear positioning components guiding the following strip, the leading strip and the following strip can be positioned more accurately in the welding machine, thereby improving the welding accuracy and welding quality of the welding machine and improving the processing efficiency of hot-dip galvanizing of strips.

[0041] 2. The front roller is supported on the lower surface of the leading strip, so that the contact position between the front push wheel and the leading strip is more stable and will not change; in the process of the front push plate gradually approaching the leading strip, the edge of the leading strip gradually enters the installation groove, and the leading strip first contacts the side plate of the front pressure plate on which the counterweight strip is installed, pushing the front pressure plate to rotate, and the side plate of the front pressure plate on which the counterweight strip is installed rises, and the side plate of the front pressure roller installed on the front pressure plate descends, so that the front pressure roller abuts against the upper surface of the leading strip, and cooperates with the support of the leading strip by the front roller to keep the height of the leading strip in the installation groove unchanged, and the translation distance measurement of the front positioning component is more accurate.

[0042] 3. The two front positioning components are started in sequence to avoid extrusion and deformation of the strip and maintain the original width of the strip; the two rear positioning components are started in sequence in reverse order, with the rear positioning component on one side first positioning the initial position of the rear strip to prevent the rear strip from being pushed off course. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1This is a schematic diagram of the overall structure of the pinch roller device in Example 1 of the present application;

[0044] Figure 2 Schematic diagram of the structure of the front pressure roller mechanism in Example 1 of the present application;

[0045] Figure 3 Schematic diagram of the structure of the front guide mechanism in Example 1 of the present application;

[0046] Figure 4 This is a schematic diagram of the structure of the lateral positioning control system in Example 1 of the present application;

[0047] Figure 5 This is a flowchart of the positioning configuration method in Example 2 of the present application;

[0048] In the figure, 1. front pressure roller mechanism; 11. lower roller; 12. upper roller; 13. driving motor; 14. lifting cylinder; 15. mounting bracket; 2. rear pressure roller mechanism; 3. front guide mechanism; 31. front push plate; 32. front push wheel; 33. mounting groove; 34. front roller; 35. front pressure plate; 36. counterweight pressure strip; 37. front pressure roller; 38. driving gear; 39. pushing rack; 4. rear guide mechanism; 5. working welder. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0050] Example 1: A pinch roller device for a hot dip galvanizing machine welding machine, referring to Figure 1 , including a front pressure roller mechanism 1, a rear pressure roller mechanism 2, a front guide mechanism 3 and a rear guide mechanism 4. The front pressure roller mechanism 1 is arranged at one side of the outlet end of the working welder 5, for supporting the leading strip steel passing through the working welder 5 and conveying the leading strip steel forward. The front guide mechanism 3 is arranged between the front pressure roller mechanism 1 and the working welder 5, for guiding and correcting the tail end of the leading strip steel. The rear pressure roller mechanism 2 is arranged at one side of the inlet end of the working welder 5, for supporting the rear strip steel that has not passed through the working welder 5, and conveying the rear strip steel forward into the working welder 5 for welding with the leading strip steel. The rear guide mechanism is arranged between the rear pressure roller mechanism 2 and the working welder 5, for guiding and correcting the head end of the rear strip steel, so that the head end of the rear strip steel can enter the working welder 5 facing the tail end of the leading strip steel, making it convenient for the working welder 5 to perform positioning welding on the two strips.

[0051] In this embodiment, the front pressing roller mechanism 1 and the rear pressing roller mechanism 2 have the same structure. In this embodiment, the front pressing roller mechanism 1 is taken as an example for description.

[0052] Reference Figure 2The front pressure roller mechanism 1 includes a lower roller 11, an upper roller 12, a drive motor 13, a lifting cylinder 14 and a mounting bracket 15. The mounting bracket 15 includes a portal frame and two support rods. The two support rods are located inside the portal frame; the two ends of the rotating shaft of the lower roller 11 are rotatably connected to the top of the two support rods, so that the height position of the lower roller 11 remains unchanged and the conveying height of the strip is maintained; the upper roller 12 is installed on the portal frame, and the upper roller 12 and the lower roller 11 are opposite to each other and parallel to each other in the axis; the two ends of the rotating shaft of the upper roller 12 are respectively connected to a lifting cylinder 14, and the cylinder body of the lifting cylinder 14 is fixedly connected to the crossbeam of the portal frame, and the piston rod is downward and sleeved on the rotating shaft of the upper roller 12 through a rotating sleeve. The upper roller 12 is driven up and down by the lifting and lowering of the piston rod, so that the upper roller 12 can abut against the strip; one end of the rotating shaft of the upper roller 12 is connected to the drive motor 13, and the drive motor 13 is equipped with a reducer. The output shaft of the reducer is coaxially connected to the rotating shaft of the upper roller 12, which can reduce the speed of the upper roller 12. When the upper roller 12 is not rotating, it can be in contact with the strip steel downwards to control the positioning of the strip steel. When the upper roller 12 is rotating, it can transport the strip steel forward.

[0053] In this embodiment, the structures of the front guide mechanism 3 and the rear guide mechanism 4 are the same, and this embodiment is described by taking the front guide mechanism 3 as an example.

[0054] Reference Figure 3 The front guide mechanism 3 includes two front positioning components relatively arranged on both sides of the leading strip and two front power components that drive the front positioning components to move laterally. Similarly, the rear guide mechanism 4 also includes two rear positioning components relatively arranged on both sides of the rear strip and two rear power components that drive the rear positioning components to move laterally.

[0055] The front positioning assembly includes a front push plate 31, a front push wheel 32, a front roller 34 and a front pressure plate 35. In this embodiment, the front push plate 31 is set to a U-shaped structure, and the length direction is set along the transmission direction of the strip steel. The opening of the front push plate 31 is opened in the direction of the strip steel, that is, the opening directions of the two front push plates 31 are opposite, and a mounting groove 33 is formed in the front push plate 31; the front push wheel 32 is installed in the mounting groove 33. In this embodiment, three front push wheels 32 are installed on each front push plate 31, and the two ends of the rotating shaft of the front push wheel 32 are connected to the top wall and bottom wall of the mounting groove 33, and a gap is left between the wheel body of the front push wheel 32 and the top wall and bottom wall of the mounting groove 33. The three front push wheels 32 are set on the side of the mounting groove 33 away from the opening. The three front push wheels 32 are arranged in a row, and a circle of grooves is opened on the outer peripheral surface of the front push wheel 32 along the circumferential direction. The height position of the groove corresponds to the height of the strip steel, so that the strip steel can abut against the groove.

[0056] The front roller 34 is installed on the bottom wall of the mounting groove 33. The rotating axis of the front roller 34 is parallel to the length direction of the mounting groove 33. Both ends are rotatably connected to the bottom wall of the mounting groove 33. The top height of the front roller 34 is smaller than the opening height of the groove on the front push wheel 32. The front push wheel 32 drags the edge position of the strip under the strip.

[0057] The front belt pressure plate 35 is installed on the top wall of the mounting groove 33. In this embodiment, the front belt pressure plate 35 is set as a right-angle plate, and the layout direction is the same as the length direction of the front roller 34. A rotating shaft is provided at the outer corner of the front belt pressure plate 35, and the rotating shaft of the front belt pressure plate 35 is parallel to the rotating shaft of the front roller 34. The front belt pressure plate 35 is rotatably connected to the top wall of the mounting groove 33 through the rotating shaft; the side plate edge of the front belt pressure plate 35 away from the strip is fixedly connected to a counterweight strip 36, and the counterweight strip 36 is the same length as the front belt pressure plate 35 and has a circular cross-section. The side plate edge of the front belt pressure plate 35 close to the strip is rotatably connected to a front pressure roller 37, and the rotating shaft of the front pressure roller 37 is parallel to the rotating shaft of the front roller 34, and the length of the front pressure roller 37 is the same as the length of the front roller 34. The weight of the counterweight strip 36 is greater than the weight of the front pressure roller 37. In the natural state of the front pressure plate 35, the side connected to the counterweight strip 36 falls, and the side where the front pressure roller 37 is installed is tilted upward and is higher than the height of the front roller 34. When the strip gradually enters the installation groove 33, the strip will abut against the side of the front pressure plate 35 connected to the counterweight strip 36, gradually lifting the structure on this side, and the counterweight strip 36 gradually rises, while the side of the front pressure plate 35 connected to the front pressure roller 37 falls until the front pressure roller 37 abuts against the strip. At this time, the front pressure roller 37 should be located directly above the front roller 34, clamping the strip so that the strip will not shake up and down, and its height in the installation groove 33 remains unchanged.

[0058] The front power assembly can be set as a cylinder assembly, and the end of the piston rod is connected to the front push plate 31; the front power assembly can also be set as a motor screw nut assembly, and the front push plate 31 is connected to the nut; in this embodiment, the front power assembly is set as a motor gear rack assembly structure, including a motor driving gear 38 and a pushing rack 39, the motor is installed on the mounting platform, the driving gear 38 is connected to the output shaft of the motor, the pushing rack 39 is meshed with the driving gear 38, and is slidably set on the mounting platform, one end of the pushing rack 39 is fixedly connected to the side of the front push plate 31 away from the mounting groove 33, and the driving gear 38 can be driven by the motor to rotate, driving the pushing rack 39 to move horizontally, and then driving the front push plate 31 to move closer to or away from the strip. The two front power assemblies both push the front positioning assemblies closer to the strip, and the two front positioning assemblies can clamp the strip in the middle and position the strip in the left and right directions. Similarly, the two rear power assemblies both push the rear positioning assemblies closer to the strip, and the two rear positioning assemblies can clamp the strip in the middle and position the strip in the left and right directions.

[0059] In this embodiment, the pinch roller device further includes a lateral positioning control system for controlling the operation of the front guide mechanism 3 and the rear guide mechanism 4 .

[0060] Reference Figure 4 The lateral positioning control system includes two displacement sensors and a controller, and the front power assembly and the rear power assembly serve as the actuators of the lateral positioning control system. The two displacement sensors are respectively arranged on the two front push plates 31, and are used to sense the movement distance of the two front push plates 31 when the front push wheels 32 abut against the strip steel, and send two sensing signals to the controller; the controller can be arranged together with the control system of the working welder 5. On the one hand, the controller is used to control the start-up of the two front power assemblies, and on the other hand, it is used to receive the two sensing signals sent by the two displacement sensors, and send control signals to the two rear power assemblies on the same side of the front power assembly according to the two sensing signals. The result of the control is that the rear positioning assembly on the same side moves the same distance as the front positioning assembly moves, so that the front positioning assembly and the rear positioning assembly are axially relative in the front-to-back direction, and the distance between the two front positioning assemblies is the same as the distance between the two rear positioning assemblies.

[0061] In terms of control sequence, the two front positioning assemblies and the two rear positioning assemblies are activated in the order of ①②③④. The two front positioning assemblies are activated in a front-to-back sequence, successively contacting the leading strip; the two rear positioning assemblies are activated in a front-to-back sequence, successively contacting the trailing strip. In this way, the two front positioning assemblies are activated in a front-to-back sequence to avoid extrusion and deformation of the strip, and to maintain the original width of the strip. The two rear positioning assemblies are activated in a reverse order, with the rear positioning assembly on one side first locating the initial position of the trailing strip, and then the rear positioning assembly on the other side fixing it to prevent the trailing strip from being pushed off.

[0062] Example 2: A method for positioning and configuring a hot dip galvanizing machine welding machine, referring to Figure 5 , including the following steps:

[0063] The start motor stops, and the conveying of the leading strip stops. The upper roller 12 presses and fixes the leading strip, and presses the tail end of the leading strip to keep the tail end of the leading strip in the welding machine. If the direction of the leading strip is not correct, the front guide mechanism 3 can be used to correct the transmission direction of the leading strip during the conveying process of the leading strip.

[0064] After the leading strip is positioned and fixed, the front power assembly on the first side is started to push the front positioning assembly to move closer to the leading strip. After the front power assembly on the first side contacts the leading strip, the displacement sensor obtains the first displacement data and transmits it to the controller. Then, the front power assembly on the second side is started to push the other front positioning assembly to move closer to the leading strip. After the front power assembly on the second side contacts the leading strip, the displacement sensor obtains the second displacement data and transmits it to the controller.

[0065] After acquiring the two displacement data, the controller first sends a control signal to the rear power assembly on the second side, pushing the rear positioning assembly on the second side to move horizontally close to the rear strip steel, and stops the rear power assembly on the second side after it contacts the rear strip steel. Then, the controller sends a second control signal to the rear power assembly on the first side, pushing the rear positioning assembly on the first side to move horizontally close to the rear strip steel, and stops the rear power assembly on the first side after it contacts the rear strip steel.

[0066] Start the lifting cylinder 14 of the rear pressure roller mechanism 2 to press the head end of the rear strip, start the drive motor 13 to drive the upper roller 12 to rotate, and the upper roller 12 pulls the head end of the rear strip forward and enters the working welder 5 to dock with the tail end of the leading strip, and then weld it.

[0067] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A pinch roller device for a hot dip galvanizing machine welding machine, characterized in that: include: A front pressure roller mechanism (1) is provided at the outlet side of the welding machine and is used for controlling the upward and downward positioning of the leading strip steel; A rear pressure roller mechanism (2) is provided on the inlet side of the welding machine and is used for controlling the up and down positioning of the rear strip steel; A front guide mechanism (3) is arranged between the front pressure roller mechanism (1) and the welding machine, and is used to abut the left and right sides of the leading strip steel, and comprises two front positioning assemblies relatively arranged on both sides of the leading strip steel and two front power assemblies for driving the front positioning assemblies to move laterally; A rear guide mechanism (4) is provided between the rear pressure roller mechanism (2) and the welder, and is used to abut the left and right sides of the leading strip steel, and comprises two rear positioning assemblies relatively provided on both sides of the trailing strip steel, and two rear power assemblies for driving the rear positioning assemblies to move laterally; as well as The lateral positioning control system is used to detect the translation position of the front positioning assembly and control the rear positioning assembly to translate to the corresponding axial position; The front positioning assembly includes a front push plate (31) arranged along the transmission direction of the strip steel and a plurality of front push wheels (32) arranged on the front push plate (31) facing the side of the strip steel, a groove is provided on the outer peripheral surface of the front push wheel (32) along the circumferential direction, and the strip steel can abut against the groove; a mounting groove (33) is provided on the side of the front push plate (31) facing the strip steel, the opening of the mounting groove (33) faces the strip steel, and the two ends of the rotating shaft of the front push wheel (32) are connected to the top wall and the bottom wall of the mounting groove (33); a front roller (34) is provided on the bottom wall of the mounting groove (33), and the rotating shaft of the front roller (34) is parallel to the length direction of the mounting groove (33); the mounting groove (33) is provided with a front roller (34), and the rotating shaft of the front roller (34) is parallel to the length direction of the mounting groove (33); the mounting groove (33) is provided with a front roller (34). A front pressure plate (35) is rotatably connected to the top wall of the groove (33), and the front pressure plate (35) is set as a right-angle plate. The outer corner is connected to the top wall of the installation groove (33) through a rotating shaft. A counterweight pressure strip (36) is fixedly connected to the side plate away from the strip steel, and a front pressure roller (37) is rotatably connected to the side plate close to the strip steel. The rotating shaft of the front pressure roller (37) is parallel to the length direction of the installation groove (33); the front power assembly is set as one of a cylinder assembly, a motor screw nut assembly and a motor gear rack assembly; the structure of the rear positioning assembly is the same as that of the front positioning assembly, and the structure of the rear power assembly is the same as that of the front power assembly.

2. The pinch roller device for a hot dip galvanizing machine welding machine according to claim 1, characterized in that: The front pressure roller mechanism (1) and the rear pressure roller mechanism (2) have the same structure, and both include a lower roller (11), an upper roller (12), a driving motor (13) for driving the upper roller (12) to rotate, and a lifting cylinder (14) for driving the upper roller (12) to move up and down, wherein the output shaft of the driving motor is fixedly connected to the rotating shaft of the upper roller (12), and the piston rod of the lifting cylinder (14) is rotatably connected to the rotating shaft of the upper roller (12).

3. The pinch roller device for a hot dip galvanizing machine welding machine according to claim 1, characterized in that: The lateral positioning control system includes: Two displacement sensors, used to sense the movement distance of the two front positioning assemblies when the front positioning assemblies abut against the strip steel, and to send out a sensing signal; and A controller, configured to receive two sensing signals from the two displacement sensors and send control signals to the rear power assembly on the same side of the sensing signals; The rear power assembly responds to the control signal and controls the rear positioning assembly to translate the same distance as the front positioning assembly.

4. The pinch roller device for a hot dip galvanizing welding machine according to claim 3, characterized in that: The two front positioning assemblies are started in sequence and come into contact with the strip steel; the two rear positioning assemblies are started in sequence and come into contact with the strip steel in the opposite order to the two front positioning assemblies.

5. A method for positioning and configuring a hot dip galvanizing unit welding machine, using the pinch roller device for a hot dip galvanizing unit welding machine according to claim 2, characterized in that: The following steps are involved: Starting the front pressing roller mechanism (1) to press the tail end of the preceding strip so that the tail end of the preceding strip is located inside the welding machine; The first side front positioning component is started, and stops after contacting the preceding strip steel, and the second side front positioning component is started, and stops after contacting the preceding strip steel, and two displacement sensors (51) respectively send two sensing signals; The controller sends a control signal to start the second side rear positioning assembly, which stops after contacting the rear strip steel, and then starts the first side rear positioning assembly, which stops after contacting the rear strip steel; The rear pressing roller mechanism (2) is started to press the head end of the rear strip steel and pull the head end of the rear strip steel forward into the welding machine to connect with the tail end of the leading strip steel.

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