Automatic titanium welding device and method for cathode roller

Abstract

The invention discloses an automatic titanium welding device and method for a cathode roller. The automatic titanium welding device comprises a servo motor, a speed reducer system, a driving gear, a guide sleeve, a laser positioner, a rotary gear, a thrust bearing, a positioning block, a rotary table top, a robot welding system and a base. The titanium welding efficiency of the cathode roller is improved, the labor intensity is reduced, and the titanium welding consistency is stabilized; by means of the device, titanium welding of the cathode roller can be achieved automatically in the welding process by calling a welding program, and automation of welding of a titanium plate and a titanium cylinder, welding of a titanium ring and a titanium cylinder and welding of the titanium ring and the titanium plate of the cathode roller is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to an automatic titanium welding device and method for a cathode roller. Background Art

[0002] With the rapid development of new energy vehicles, 5G communications, big data centers, artificial intelligence, etc. around the world, the demand for electrolytic copper foil has grown rapidly. And due to the development of demand for power lithium batteries and energy storage lithium batteries, the demand for cathode rollers for equipment for producing electrolytic copper foil has increased dramatically. The outer ring of the cathode roller is a titanium layer, and the titanium layer is composed of a titanium cylinder, a titanium ring, a titanium plate, a titanium sleeve, a titanium sheath, etc. The welding of the cathode roller titanium layer is generally carried out by manual argon arc welding, which has high labor intensity and low welding efficiency. In particular, the welding of the J-shaped groove between the titanium cylinder and the titanium ring on the outside of the cathode roller, and the welding of the fillet weld between the titanium ring and the titanium plate, due to the deep welding groove and the large circumference of the weld, the number of welding layers requires 4-6 times, the welding time is long, and the labor intensity is high.

[0003] Since the production of electrolytic copper foil is carried out by roller continuous electrolysis method. The principle is to immerse the cathode roller in copper sulfate electrolytic solution and then pass a low voltage and high current DC power supply to deposit the copper ions in the electrolytic solution on the titanium surface of the cathode roller to form copper foil, and then use the rotation of the cathode roller to peel off and roll up the formed copper foil from the surface of the cathode roller, and then further perform surface treatment on the copper foil to form copper foil products. Therefore, the cathode roller is a core key component that directly affects the output and quality of copper foil.

[0004] Since the cathode roller is in an acidic corrosive environment of copper sulfate during copper foil production, the titanium weld must be well welded. Since the copper sulfate solution is extremely corrosive and penetrating, the quality of the cathode roller titanium welding is very critical. The titanium weld must be well welded and free of cracks and leakage. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a cathode roller automated titanium welding device and method, including a servo motor, a reducer system, a drive gear, a guide sleeve, a laser positioner, a rotary gear, a thrust bearing, a positioning block, a rotary table, a robot welding system and a base; the present invention improves the cathode roller titanium welding efficiency, reduces labor intensity, and stabilizes the consistency of titanium welding; through this device, the cathode roller titanium welding can be performed by calling the welding program, and the welding process is automatically realized, thereby realizing the automation of the welding of the cathode roller titanium plate and the titanium cylinder, the titanium ring and the titanium cylinder, and the titanium ring and the titanium plate.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] A cathode roller automated titanium welding device, comprising a servo motor, a reducer system, a driving gear, a guide sleeve, a laser positioner, a rotary gear, a thrust bearing, a positioning block, a rotary table, a robot welding system and a base;

[0008] The thrust bearing is placed and fixed on the upper end surface of the base; a connecting platform is welded on the right side of the base for fixing the servo motor and the reducer system;

[0009] The rotary gear is mounted on the upper surface of the thrust bearing, and the rotary gear is fixedly connected to the rotary table; the driving gear meshes and rotates with the rotary gear; the driving gear rotates under the drive of the servo motor and the reducer system, the driving gear meshes with the rotary gear, and the rotary gear drives the rotary table to rotate;

[0010] The laser locator is fixed on the base and is used to guide the cathode roller to be hoisted into the welding device and guide the cathode roller axis to be coaxial with the welding device;

[0011] The positioning block is fixed on the rotating table, the positioning block is a fan-shaped structure, the upper surface of the positioning block is used to place the cathode roller, and the titanium end plate of the cathode roller is placed on the upper surface of the positioning block;

[0012] The guide sleeve is fixedly assembled at the center of the rotary table. The guide sleeve has a tapered hole structure. The diameter of the upper end of the tapered hole is large and the diameter of the lower end is small, which is convenient for inserting the cathode roller shaft. The guide sleeve plays a role in guiding and positioning the cathode roller when inserting.

[0013] The robot welding system is installed on the ground near the cathode roller automatic welding device, and realizes cathode roller titanium welding by calling the welding program.

[0014] Preferably, the base is welded from steel sections and plates, the steel sections are square tubes or channel steels, and the plates are Q235 steel plates; the base is a quadrilateral or circular structure, with a base plate welded around the bottom surface of the base, the base plate is made of Q235 material, and embedded parts are welded on the base plate, the embedded parts are buried under the ground, and are stably integrated with the installation foundation to ensure reliable fixation of the welding device base; the parallelism of the upper and lower surfaces of the base is not greater than 0.1 mm, and a servo motor mounting position is welded on one side of the base to install the servo motor, and the motor mounting seat is made of Q235 steel plate; a concave hole is machined on the upper surface of the base for assembling a thrust bearing to ensure that the center line of the concave hole is perpendicular to the upper and lower surfaces of the base, so as to ensure that the cathode roller is vertical when it is finally placed in the welding device, thereby facilitating the welding quality.

[0015] Preferably, a recessed hole is opened in the center of the upper surface of the base, and the thrust bearing is assembled in the recessed hole, and the depth of the recessed hole is 10-15mm; a rotating gear is assembled on the upper surface of the thrust bearing, and an inner recessed hole is arranged on the lower surface of the rotating gear, and the upper surface of the thrust bearing is assembled in the recessed hole on the lower surface of the rotating gear, so as to facilitate the radial positioning of the thrust bearing; the rotating gear is fixed as a whole with the rotating table, and the rotating gear is assembled on the lower surface of the rotating table and fixed by screws.

[0016] Preferably, the turntable is welded with steel plates and supporting ribs; the upper and lower surfaces of the turntable are parallel, threaded holes are processed on the lower surface of the turntable for connecting the rotating gear, and threaded holes are processed on the upper surface for assembling positioning blocks; a guide sleeve is installed in the center of the turntable to guide the cathode roller to be coaxially placed on the turntable; the turntable is made of Q235 material, and the middle ribs are all made of Q235 material, and are circular or quadrilateral in shape.

[0017] Preferably, the positioning block is fan-shaped, and four positioning blocks are installed on the turntable. The positioning block and the turntable are fixed with screws through the U-shaped grooves on the positioning blocks. The U-shaped grooves are arranged radially along the turntable, and each positioning block is provided with two U-shaped slot holes to facilitate radial adjustment and movement of the positioning block.

[0018] Preferably, the diameter of the lower end hole of the guide sleeve matches the diameter of the cathode roller shaft, and the diameter of the lower end hole of the guide sleeve is no more than 3 mm larger than the diameter of the cathode roller shaft, thereby ensuring that the coaxiality of the cathode roller and the device does not exceed 3 mm. Guide sleeves of different specifications are set according to different cathode roller shaft diameters to ensure the coaxiality of the cathode roller shaft and the device.

[0019] Preferably, the rotating gear and the driving gear are made of 45 steel or alloy steel and are tempered by heat treatment. The inner hole of the thrust bearing is equipped with an arc block for fixing the laser locator. The arc block is fixed to the upper surface of the base and fixed to the upper surface of the base by screws. The laser locator is connected along the radial hole of the arc block to ensure that the laser locator is located at the center position of the device when working; the laser locator adopts a cylinder or connecting rod mechanism to realize the extension of the laser launch frame to the working center position and return to the stop position.

[0020] Preferably, the positioning blocks are evenly arranged along the circumference of the turntable according to the table diameter and the weight of the cathode roller, and the positioning blocks are fixed on the turntable by screws; the upper surface of the positioning blocks is assembled with wear-resistant soft material, such as pure copper, epoxy resin, rubber, felt, and polyurethane material, to prevent scratches on the end face of the cathode roller titanium plate.

[0021] A cathode roller automated titanium welding method comprises the following steps:

[0022] Step 1: Lift the cathode roller, turn on the laser positioning, and hoist the cathode roller directly above the welding device. The cathode roller axis is aligned with the center of the laser locator. The laser locator is reset. The outermost side of the cathode roller axis is inserted into the guide sleeve. The cathode roller is lowered until the cathode roller falls stably into the base. Ensure that the cathode roller is coaxial with the device, and the coaxiality is controlled within 3mm.

[0023] Step 2: Check the circuit system, robot welding system and gas system are ready;

[0024] Step 3: Check the positioning of the cathode roller titanium ring and the titanium cylinder, and check the positioning of the titanium ring and the titanium plate. If normal, proceed to the next process;

[0025] Step 4: Select the welding procedures between the titanium ring and the titanium cylinder, and between the titanium ring and the titanium plate, respectively, start the cathode roller rotation and the automatic welding procedure, and realize the automatic welding of the welds between the outer titanium ring of the cathode roller and the titanium cylinder, and between the titanium ring and the titanium plate;

[0026] Step 5: After welding is completed, turn off the robot welding system, electrical control system, circuit and gas circuit.

[0027] The beneficial effects of the present invention are as follows:

[0028] The invention improves the efficiency of cathode roller titanium welding, reduces labor intensity, and stabilizes the consistency of titanium welding; through this device, the cathode roller titanium welding can be carried out by calling the welding program, and the welding process is automatically realized, thereby realizing the automation of welding between the cathode roller titanium plate and the titanium cylinder, the titanium ring and the titanium cylinder, and the titanium ring and the titanium plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The structure of the device of the present invention is shown in FIG. Figure 1 ; Among them, (a) is the front view and (b) is the top view.

[0030] Figure 2 for Figure 1 3D view of the .

[0031] Figure 3 The structure of the device of the present invention is shown in FIG. Figure 2 .

[0032] Figure 4 Schematic diagram of the structure of the cathode roller, where (a) is the front view and (b) is Figure 4 (a) is the top view, (c) is Figure 4 A partial enlarged view of area D in (a).

[0033] In the figure: 1. servo motor; 2. reducer system; 3. drive gear; 4. guide sleeve; 5. laser positioner; 6. rotary gear; 7. thrust bearing; 8. positioning block; 9. rotary table; 10. cathode roller; 11. welding robot system; 12. pit; 13. titanium cylinder; 14. titanium ring; 15. titanium plate. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] In the prior art, manual argon arc welding is used to weld the cathode roller titanium cylinder and titanium ring, and the titanium ring and titanium plate. The welding efficiency is low, the welding labor intensity is high, the welding cycle is long, and the workers' operation level is high. However, the weld consistency is poor, and the welding quality varies due to different personal welding levels. The purpose of the present invention is to provide an automated welding device that can realize the titanium weld between the cathode roller titanium cylinder and the titanium ring, and the titanium ring and the titanium plate, and can efficiently realize the efficient and stable welding of the titanium weld between the titanium cylinder and the titanium ring, and the titanium ring and the titanium plate.

[0036] The invention provides a cathode roller automated titanium welding device and method.

[0037] like Figures 1 to 3 As shown, it is the cathode roller titanium welding automation device of the present invention, Figure 4 Schematic diagram of cathode roller. Cathode roller titanium welding automation device is used to realize welding of welds between titanium cylinder 13 and titanium ring 14 and welding of fillet welds between titanium ring 14 and titanium plate 15.

[0038] The device of the present invention comprises a servo motor 1, a reducer system 2, a slewing support system 3, a guide sleeve 4, a laser positioner 5, a slewing gear 6, a thrust bearing 7, a positioning block 8, a slewing table 9, and a robot welding system 11.

[0039] The base of the titanium welding automation device is welded by channel steel or square tube, and the bottom surface of the base is welded with a connecting base plate at the four corners around it. There are welded embedded parts around the base plate for stable fixation of the base of the device. The thrust bearing 7 is placed and fixed on the upper end face of the base of the device, and a connecting platform for fixing the servo motor 1 and the reducer system 2 is welded on the right side of the base; the driving gear 3 is meshed and rotated with the rotating gear 6, and the rotating gear 6 is assembled on the thrust bearing 7, the bottom surface of the thrust bearing 7 is installed on the base of the device, and the rotating gear 6 is installed on the upper surface of the thrust bearing 7, and the rotating gear is fixed to the rotating table 9. When the driving gear 3 rotates under the drive of the servo motor 1 and the reducer system 2, the driving gear 3 is meshed with the rotating gear 6, and the rotating gear 6 drives the rotating table 9 to rotate.

[0040] When the cathode roller is hoisted and assembled into the automatic welding device, the laser locator 5 starts the laser, and the laser column guides the center line of the cathode roller shaft to basically coincide with the laser column. When the cathode roller falls, when the cathode roller shaft is inserted into the automatic welding device, the cathode roller shaft is inserted into the inner hole of the guide sleeve. The guide sleeve and the cathode roller shaft are clearance-matched, and the cathode roller is guided to be well coaxial with the laser welding device. After the cathode roller shaft is coaxial with the guide sleeve, the laser locator is reset and the laser is turned off to avoid the cathode roller shaft to prevent collision. The laser locator can use a cylinder, and the laser device is fixed at the tail end of the cylinder. Through the extension and contraction movement of the cylinder, the laser transmitter reaches the working position and returns to the stop position. The laser locator can also use other mechanisms, such as a connecting rod mechanism, to achieve the laser transmitter reaching the working position and returning to the stop position, so as to guide the cathode roller to be hoisted into the device and return to the stop position after guidance, prevent the cathode roller shaft from hitting the laser transmitter, and avoid interference between the cathode roller shaft and the laser transmitter.

[0041] After the cathode roller is loaded into the automatic welding device, Figure 4 , the titanium plate and the titanium ring are located on both sides of the cathode roller, and the titanium plate and the titanium ring are both located at the inner hole of the cathode roller titanium cylinder. The titanium plate is located on the end faces of both sides of the cathode roller, and the titanium ring is tightly assembled with the titanium plate. The titanium ring is located on the outside of the titanium plate. After the titanium plate and the titanium ring are assembled, ensure that the titanium plate and both sides of the cathode roller are firmly attached, and the outer circle of the titanium plate and the inner hole of the titanium cylinder are positioned and welded. Then, the device is used to automatically weld the titanium plate and the inner hole of the titanium cylinder. After the welding of the weld between the titanium plate and the inner hole of the titanium cylinder is completed, the titanium ring is assembled. After the titanium ring is assembled on the titanium plate of the cathode roller, it is pressed by a tooling to ensure that the titanium ring is tightly attached to the titanium plate. The upper surface of the titanium ring is flat, and the circumference of the assembly connection between the outer circle of the titanium ring and the inner hole of the titanium cylinder is evenly positioned and welded. There are about 8-16 circumferential positioning welds, and the circumference of each positioning weld is long. The degree is about 5mm, and then the corresponding titanium cylinder and titanium ring welding program is selected to weld the welds at the inner holes of the titanium ring and the titanium cylinder; during welding, the servo motor drives the rotary platform. Due to the large mass of the cathode roller, the friction between the cathode roller and the rotary platform is large. The rotation speed of the rotary platform is slow during welding, and the cathode roller and the rotary platform are relatively static. Therefore, the servo motor drives the rotary platform to rotate, that is, the servo motor drives the cathode roller to rotate. When the cathode roller rotates, the robot welding system also starts the welding work, and selects appropriate welding parameters to match the rotation speed of the cathode roller, including welding current, welding voltage, welding speed, gas supply, wire feeding speed, arc swing width, arc swing frequency, laser scanning, laser tracking, etc., to realize the automatic welding of the welds at the titanium cylinder and the titanium ring. Due to the deep groove and large radial width at the titanium ring and the titanium cylinder, the welds at the titanium ring and the titanium cylinder need to be automatically welded 2-3 times before the welding of the welds at the titanium ring and the titanium cylinder can be completed. The fillet weld between the titanium ring and the titanium plate is also welded using this device. The welding program for the fillet weld between the titanium ring and the titanium plate is called, and appropriate welding parameters are selected to match the rotation speed of the cathode roller to complete the automatic welding of the fillet weld between the titanium ring and the titanium plate.

[0042] A method for using a cathode roller automated titanium welding device, the specific steps are as follows:

[0043] Step 1: Lift the cathode roller, turn on the laser locator, lift the cathode roller directly above the device, align the cathode roller axis with the laser positioning center, reset the laser positioning system, insert the guide sleeve into the outermost side of the cathode roller axis, and slowly lower the cathode roller until it stably falls into the base of the device, ensuring that the cathode roller is coaxial with the device, and the coaxiality is controlled within 3mm.

[0044] Step 2: Check the circuit system, robot welding system, gas system, etc., and make sure they are ready;

[0045] Step 3: Check the positioning of the cathode roller titanium ring and the titanium cylinder, and check the positioning of the titanium ring and the titanium plate. If normal, proceed to the next process;

[0046] Step 4: Select the welding procedures between the titanium ring and the titanium cylinder, and between the titanium ring and the titanium plate, respectively, start the cathode roller rotation and the automatic welding procedure, and realize the automatic welding of the welds between the outer titanium ring of the cathode roller and the titanium cylinder, and between the titanium ring and the titanium plate;

[0047] Step 5: After welding is completed, turn off the robot welding system, electrical and other control systems, and close the circuits, gas lines, etc.

[0048] Example:

[0049] The base is welded by steel and steel plate. The steel can be square tube or channel steel. The plate is Q235 steel plate. The base is a quadrilateral or circular structure. The bottom surface of the base is welded with a bottom plate made of Q235 material. The bottom plate is welded with embedded parts. The embedded parts are buried under the ground to achieve stable solidification with the installation foundation to ensure the reliable fixation of the base of the device. The base is welded by two layers of steel, and the upper and lower layers are welded by steel and steel plate. The upper and lower surfaces of the base should be processed to ensure that the parallelism of the upper and lower surfaces is not greater than 0.1mm. The servo motor installation position is welded on one side of the base to install the servo motor. The motor mounting seat is made of Q235 steel plate. The upper surface of the base should be processed with a concave hole to assemble and place the thrust bearing. The center line of the concave hole is perpendicular to the upper and lower surfaces of the base to ensure that the cathode roller is vertical when it is finally placed in the device, so as to ensure the welding quality.

[0050] The thrust bearing is assembled on the upper surface of the base, and a concave hole is opened in the center of the upper surface of the base. The thrust bearing is assembled in the concave hole on the upper surface of the base, and the depth of the pit is 10-15mm. The upper surface of the thrust bearing is assembled with a rotary gear, and an inner concave hole is set on the lower surface of the rotary gear. The upper surface bearing of the thrust bearing is assembled in the concave hole on the lower surface of the rotary gear, which is convenient for the radial positioning of the thrust bearing. The rotary gear and the rotary table are fixed as one body, and the rotary gear is assembled on the lower surface of the rotary table and fixed as one body by screws. In this way, when the servo motor rotates, the servo motor drives the reducer, and the reducer drives the driving gear to rotate. The driving gear meshes with the rotary gear, so that the rotary gear rotates, and the rotary gear is fixed as one body with the rotary table, so that the rotary table rotates. A fixed positioning block is assembled on the upper surface of the rotary table, and a fixed guide sleeve is assembled in the center of the rotary table. The rotary table is welded with a steel plate and a supporting rib plate. After welding, stress relief annealing is performed to eliminate welding stress. After annealing, the upper and lower surfaces are processed to ensure that the upper and lower surfaces are parallel. The lower surface of the rotary table is processed with threaded holes for connecting and fixing the rotary gear, and the upper surface is processed with threaded holes for connecting and fixing the positioning block. The center of the rotary table is equipped with a guide sleeve to guide the cathode roller to be coaxially placed on the rotary table. The rotary table is made of Q235 material, and the middle rib plate is made of Q235 material. The rotary table is circular or quadrilateral in shape.

[0051] The fixed positioning blocks assembled on the upper surface of the turntable are in a fan-shaped structure. There are 4 fixed positioning blocks assembled on the turntable. The fixed positioning blocks and the turntable are fixed with screws. The positioning blocks and the turntable are fixed through the U-shaped grooves on the positioning blocks. The U-shaped grooves are arranged along the radial direction of the turntable. Each positioning block is provided with two U-shaped slot holes to facilitate the adjustment and movement of the positioning blocks along the radial direction.

[0052] The center of the rotary table is equipped with a fixed guide sleeve, which is a tapered hole structure with a large diameter at the upper end and a small diameter at the lower end, so that the cathode roller can be inserted easily. The guide sleeve plays a guiding and positioning role in the insertion of the cathode roller. The diameter of the lower end hole of the guide sleeve matches the diameter of the cathode roller, and the diameter of the lower end hole of the guide sleeve is no more than 3mm larger than the diameter of the cathode roller, so as to ensure that the coaxiality between the cathode roller and the device does not exceed 3mm. According to the different diameters of the cathode roller, guide sleeves of different specifications are set to ensure the coaxiality between the cathode roller and the device.

[0053] The rotating gear and driving gear are made of 45 steel or other alloy steel materials and are quenched and tempered. The inner hole of the thrust bearing is equipped with an arc block for fixing the laser locator. The arc block is fixed on the upper surface of the base and fixed to the upper surface of the base by screws. The laser locator is connected along the radial hole of the arc block to ensure that the laser locator is located at the center of the device when working. The laser locator uses a cylinder or connecting rod mechanism to achieve the extension of the laser locator to the working center position and return to the stop position. When the cathode roller is ready to be hoisted into the device, the laser locator is started, and the cylinder or connecting rod mechanism works to make the laser emitter reach the center position. The laser beam emits laser upward from the center of the device, and the cathode roller is guided by this laser. At the same time, the center of the rotary table is equipped with a positioning sleeve. The positioning sleeve is a trumpet-shaped cone hole with a large upper hole and a small lower hole. It is used to guide the cathode roller shaft to insert into the positioning sleeve and well achieve the coaxiality requirements of the cathode roller and the device. After the cathode roller and the laser column are basically aligned, the laser locator is turned off, the laser transmitter is turned off, and the cylinder or connecting rod mechanism returns to the initial stop position to avoid interference between the cathode roller and the laser locator and cause collision.

[0054] After the cathode roller is inserted into the guide sleeve, the cathode roller slowly falls down, and the end face of the cathode roller is placed on the positioning block. The positioning blocks are evenly arranged along the circumference of the rotary table, and are arranged according to the table diameter and the weight of the cathode roller. Generally, 4 positioning blocks are arranged. The positioning blocks are fan-shaped and fixed on the rotary table by screws. The upper surface of the positioning block is equipped with wear-resistant soft materials, such as pure copper, epoxy resin, rubber, felt, polyurethane materials, etc., to prevent scratches on the end face of the cathode roller titanium plate.

[0055] Specific examples are as follows:

[0056] Take Φ2700㎜ cathode roller titanium welding as an example.

[0057] The base of the device is a quadrilateral frame structure. The upper and lower layers of the base are made of square tubes 120×120×6mm or channel steels 140×80×5.5mm. The length and width directions of the bottom square tubes or channel steels are overlapped and welded. The upper layer of the base is also welded with square tubes or channel steels. In order to weld with embedded parts, connecting plates are welded around the bottom of the base. The connecting plates are 150×150×20mm. The connecting plates on the four corners of the lower layer of the base are welded to the embedded parts to facilitate the embedded parts to fix the base. When installing the base, ensure that the upper surface of the base is level.

[0058] The center of the upper surface of the base is processed with a positioning hole for installing the thrust bearing. The positioning hole has a diameter of 2081mm and a depth of 10mm. The thrust bearing is assembled and installed in the positioning hole. The thrust bearing model is 811-1800 (inner diameter 1800mm, outer diameter 2080mm, thickness 220mm). It bears the weight load of the axial cathode roller to ensure stable operation and ensures that the bottom surface of the bearing positioning hole is horizontal, which ensures that the thrust bearing is uniformly stressed in the axial direction and facilitates uniform circumferential rotation of the thrust bearing. After the thrust bearing is fixed, the bearing base and the base are fixed, and the upper ring of the thrust bearing rotates together with the rotary gear.

[0059] The laser locator is installed on the arc block of the inner ring of the thrust bearing. Before the cathode roller is hoisted into the base, the laser locator works, the working head extends, the laser is turned on, and the laser column guides the cathode roller to be hoisted into the inner hole of the rotary platform. When the laser column is coaxial with the cathode roller shaft, the laser locator is turned off and the laser locator returns to the starting stop position to make way for the cathode roller shaft to be inserted into the welding device. The laser locator will not interfere with the cathode roller shaft.

[0060] The servo motor is installed on the base, and the servo motor and reducer and other drive mechanisms are assembled. The servo motor drive system is assembled and connected to the drive gear, and the upper ring of the thrust bearing is assembled and connected to the rotary gear to ensure that the drive gear and the rotary gear are meshed. The servo motor power is 5.5KW, the speed is 0.01-0.8r / min, the driving gear pitch circle diameter is 164mm, the rotary gear pitch circle diameter is 1920mm, and the module is 4mm.

[0061] The upper end of the rotary gear is connected to the rotary platform. The upper and lower parts of the rotary platform are Q235 steel plates. Channel steel or square tubes are used to connect the upper and lower parts of the rotary platform to improve the rigidity and strength of the rotary platform. The upper and lower steel plates of the rotary platform and the channel steel or square tubes between the upper and lower parts are welded and annealed after welding. The parallelism of the upper and lower parts of the rotary platform is guaranteed to be no more than 0.2mm. The positioning block and guide sleeve are assembled on the rotary platform. The guide sleeve is a conical structure. The upper end diameter of the inner hole of the guide sleeve is large and the lower end diameter is small, which is convenient for the cathode roller shaft to be inserted into the guide sleeve. The lower end diameter of the guide sleeve and the cathode roller shaft are assembled with a gap. The gap between the lower end hole of the guide sleeve and the cathode roller shaft does not exceed 3mm, which not only ensures that the cathode roller shaft is quickly inserted into the guide sleeve, but also because the gap between the lower end hole diameter of the guide sleeve and the shaft diameter does not exceed 3mm, it can well ensure the coaxiality requirements of the cathode roller shaft and the welding device. 3-4 positioning blocks are installed on the upper surface of the turntable. The positioning blocks can move radially back and forth on the upper surface of the turntable to facilitate the placement and fixation of cathode rollers of different diameters. Pure copper or felt rubber pads and other wear-resistant soft materials are installed on the upper end surface of the positioning blocks to prevent the positioning blocks from scratching or bumping the end surface of the cathode roller titanium plate when the cathode roller falls and is placed on the upper end surface of the positioning blocks.

[0062] When the cathode roller is ready to use this system to weld the titanium weld seam on the outer ring of the cathode roller, start the laser locator, the laser locator works, the laser transmitter works to the center position and turns on the laser, and the laser column guides the cathode roller axis to basically coincide with the laser column. Then turn off the laser locator, and the laser locator returns to the starting stop position. Then the cathode roller slowly falls, and the cathode roller shaft end first enters the guide sleeve. Through the guiding effect of the guide sleeve, the cathode roller and the welding device achieve the coaxial requirement. The cathode roller continues to fall slowly, and the end face of the cathode roller titanium plate contacts the top of the positioning block and is stably placed on the positioning block.

[0063] like Figure 3 Check whether the circuit, gas circuit, control system, welding program, etc. of the automatic welding system are ready for normal operation. Figure 4 Check the weld between the outer ring titanium ring of the cathode roller and the titanium cylinder, and the assembly between the titanium ring and the titanium plate. After the weld between the cathode roller titanium ring and the titanium cylinder, and the weld between the titanium ring and the titanium plate meet the requirements, start the automatic welding circuit, gas circuit, control system, etc., and call the corresponding automatic welding programs for the welds between the cathode roller titanium ring and the titanium cylinder, and the titanium ring and the titanium plate respectively. Start the automatic welding program. The cathode roller is controlled by the automatic welding program to rotate the servo motor, the servo motor drives the reducer to rotate, the reducer drives the drive gear to rotate, and the drive gear drives the rotary gear to rotate. Since the rotary gear is fixed to the rotary platform, the rotary platform rotates. Since the rotary platform speed is low during automatic welding, the rotary platform speed is only 0.01-0.8r / min. Since the cathode roller is placed on the rotary platform, the mass of the cathode roller reaches 8.5-15 tons, and the cathode roller and the rotary platform generate sufficient friction. There is no relative movement between the cathode roller and the rotary platform under the action of friction. Therefore, after the automatic welding program is started, the cathode roller rotates according to the program control under the control of the servo motor. The automatic welding program controls the welding parameters, adjusts the welding current, welding voltage, welding speed, gas supply, wire feeding speed, arc swing width, arc swing frequency, laser scanning, laser tracking, etc. The automatic welding is matched with the rotation of the cathode roller. Under the detection and control of the automatic welding system, the automatic welding of the titanium weld between the cathode roller titanium ring and the titanium cylinder, and between the titanium ring and the titanium plate is realized, which ensures the stability of the titanium welding of the outer ring of the cathode roller, greatly improves the welding efficiency, and reduces the welding labor intensity of the workers. According to the design requirements of the cathode roller, since the welding groove at the weld between the titanium ring and the titanium cylinder is relatively large, the weld between the titanium ring and the titanium cylinder needs to be automatically welded 2-3 times. The weld between the titanium ring and the titanium plate is a fillet weld with a weld height of 6mm. The welding of the weld between the titanium ring and the titanium plate can be realized by automatically welding once.

[0064] After the automatic welding system completes the welding of the titanium weld seam on the outer ring of the cathode roller, the automatic welding system and the circuit, gas circuit, and control system are turned off, the main power supply is turned off, and the cathode roller is lifted out. The automatic welding device realizes the automatic welding of the titanium weld seam on the outer ring of the cathode roller, that is, the automatic welding of the welds between the cathode roller titanium ring and the titanium cylinder, and between the titanium ring and the titanium plate is realized.

Claims

1. A cathode roller automated titanium welding device, characterized in that: Includes servo motor, reducer system, drive gear, guide sleeve, laser positioner, slewing gear, thrust bearing, positioning block, slewing table, robot welding system and base; The thrust bearing is placed and fixed on the upper end surface of the base; a connecting platform is welded on the right side of the base for fixing the servo motor and the reducer system; The rotary gear is mounted on the upper surface of the thrust bearing, and the rotary gear is fixedly connected to the rotary table; the driving gear meshes and rotates with the rotary gear; the driving gear rotates under the drive of the servo motor and the reducer system, the driving gear meshes with the rotary gear, and the rotary gear drives the rotary table to rotate; The laser locator is fixed on the base and is used to guide the cathode roller to be hoisted into the welding device and guide the cathode roller axis to be coaxial with the welding device; The positioning block is fixed on the rotating table, and the positioning block is a fan-shaped structure. The upper surface of the positioning block is used to place the cathode roller, and the titanium end plate of the cathode roller is placed on the upper surface of the positioning block; The guide sleeve is fixedly assembled at the center of the rotary table. The guide sleeve has a tapered hole structure. The diameter of the upper end of the tapered hole is large and the diameter of the lower end is small, which is convenient for inserting the cathode roller shaft. The guide sleeve plays a role in guiding and positioning the cathode roller when inserting. The robot welding system is installed on the ground near the cathode roller automatic welding device, and realizes cathode roller titanium welding by calling the welding program.

2. The cathode roller automated titanium welding device according to claim 1, characterized in that: The base is welded from steel sections and plates, the steel sections are square tubes or channel steels, and the plates are Q235 steel plates; the base is a quadrilateral or circular structure, with base plates welded around the bottom surface of the base, the base plates are made of Q235 material, embedded parts are welded on the base plates, and the embedded parts are buried under the ground to achieve stability with the installation foundation, thereby ensuring reliable fixation of the base of the welding device; the parallelism of the upper and lower surfaces of the base is not greater than 0.1 mm, and a servo motor mounting position is welded on one side of the base to install the servo motor, and the motor mounting seat is made of Q235 steel plates; a concave hole is processed on the upper surface of the base for assembling a thrust bearing, ensuring that the center line of the concave hole is perpendicular to the upper and lower surfaces of the base, ensuring that the cathode roller is vertical when it is finally placed in the welding device, thereby facilitating the welding quality.

3. The cathode roller automated titanium welding device according to claim 1, characterized in that: A concave hole is opened in the center of the upper surface of the base, and the thrust bearing is assembled in the concave hole, and the depth of the pit is 10-15mm; a rotating gear is assembled on the upper surface of the thrust bearing, and an inner concave hole is arranged on the lower surface of the rotating gear. The upper surface of the thrust bearing is assembled in the concave hole on the lower surface of the rotating gear, which is convenient for radial positioning of the thrust bearing; the rotating gear is fixed as a whole with the rotating table, and the rotating gear is assembled on the lower surface of the rotating table and fixed by screws.

4. The cathode roller automated titanium welding device according to claim 1, characterized in that: The turntable is welded with steel plates and supporting ribs; the upper and lower surfaces of the turntable are parallel, threaded holes are processed on the lower surface of the turntable for connecting the rotating gear, and threaded holes are processed on the upper surface for assembling positioning blocks; a guide sleeve is installed in the center of the turntable for guiding the cathode roller to be coaxially placed on the turntable; the turntable is made of Q235 material, and the middle ribs are all made of Q235 material, and are circular or quadrilateral in shape.

5. The cathode roller automated titanium welding device according to claim 1, characterized in that: The positioning blocks are fan-shaped, and four positioning blocks are mounted on the turntable. The positioning blocks and the turntable are fixed with screws through U-shaped grooves on the positioning blocks. The U-shaped grooves are arranged radially along the turntable, and each positioning block is provided with two U-shaped slot holes to facilitate radial adjustment and movement of the positioning blocks.

6. The cathode roller automated titanium welding device according to claim 1, characterized in that: The diameter of the lower end hole of the guide sleeve matches the diameter of the cathode roller shaft, and the diameter of the lower end hole of the guide sleeve is no more than 3mm larger than the diameter of the cathode roller shaft, ensuring that the coaxiality of the cathode roller and the device does not exceed 3mm. Guide sleeves of different specifications are set according to different cathode roller shaft diameters to ensure the coaxiality of the cathode roller shaft and the device.

7. The cathode roller automated titanium welding device according to claim 1, characterized in that: The slewing gear and driving gear are both made of 45 steel or alloy steel and are tempered by heat treatment. The inner hole of the thrust bearing is equipped with an arc block for fixing the laser locator. The arc block is fixed to the upper surface of the base and fixed to the upper surface of the base by screws. The laser locator is connected along the radial hole of the arc block to ensure that the laser locator is located at the center of the device when working; the laser locator adopts a cylinder or connecting rod mechanism to realize the extension of the laser launch frame to the working center position and return to the stop position.

8. The cathode roller automated titanium welding device according to claim 1, characterized in that: The positioning blocks are evenly arranged along the circumference of the rotary table according to the table diameter and the weight of the cathode roller, and are fixed on the rotary table by screws; the upper surface of the positioning blocks is assembled with wear-resistant soft materials, such as pure copper, epoxy resin, rubber, felt, and polyurethane materials, to prevent scratches on the end face of the cathode roller titanium plate.

9. A welding method using the welding device as claimed in claim 1, characterized in that: The steps include: Step 1: Lift the cathode roller, turn on the laser positioning, and hoist the cathode roller directly above the welding device. The cathode roller axis is aligned with the center of the laser locator. The laser locator is reset. The outermost side of the cathode roller axis is inserted into the guide sleeve. The cathode roller is lowered until the cathode roller falls stably into the base. Ensure that the cathode roller is coaxial with the device, and the coaxiality is controlled within 3mm. Step 2: Check the circuit system, robot welding system and gas system are ready; Step 3: Check the positioning of the cathode roller titanium ring and the titanium cylinder, and check the positioning of the titanium ring and the titanium plate. If normal, proceed to the next process; Step 4: Select the welding procedures between the titanium ring and the titanium cylinder, and between the titanium ring and the titanium plate, respectively, start the cathode roller rotation and the automatic welding procedure, and realize the automatic welding of the welds between the outer titanium ring of the cathode roller and the titanium cylinder, and between the titanium ring and the titanium plate; Step 5: After welding is completed, turn off the robot welding system, electrical control system, circuit and gas circuit.

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