A self-positioning and deviation-correcting roll welding machine for composite materials

Abstract

The invention discloses a self-positioning and deflection-correcting composite material roll welding machine, comprising an outer frame, and a control door installed on the front side of the outer frame; a controller is installed on the left side of the outer frame; a speed control mechanism and a tension control mechanism are installed on the left side of a coating coil unwinding mechanism, a metal material unwinding mechanism and a coating coil rewinding mechanism. The self-positioning and deflection-correcting composite material roll welding machine can control the self-positioning position accuracy of three coils within ±0.2mm through the coordinated use of a coating coil unwinding secondary deflection-correcting mechanism and a metal material secondary deflection-correcting mechanism, and ensures that the self-positioning alignment of the three coils before entering the roll welding mechanism is within ±0.5mm, so that the three coils are well self-positioned and aligned, thereby improving the quality of ultrasonic roll welding operations, significantly improving the manufacturing speed of composite material-based automotive lithium battery cells, and providing reliable technical support for the mass production of composite material-based automotive lithium battery cells.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing lithium battery cells for electric vehicles, in particular to a self-positioning and deviation-correcting roll welding machine for composite materials. Background Art

[0002] The high energy density of automotive lithium batteries has always been an important research direction in automotive lithium battery cell manufacturing technology. At present, composite materials with lighter weight and better safety under the same volume can significantly improve the energy density of lithium batteries. Therefore, the research on composite materials is becoming more and more important. The composite material is a PET material in the middle layer, and the metal material is attached to the surface of the PET material on both sides by evaporation or spraying. This structure causes the composite material itself to have no conductivity. Therefore, the composite material must first ensure that the intermediate material is conductive. The commonly used method is to attach a layer of metal material to the front and back of the composite material, and then use two layers of metal materials to achieve conductivity on the front and back of the composite material. The advantage of this is that it not only ensures the conductivity of the welding material, but also improves the strength. At present, the market uses a rolling welder to weld the composite material and the metal material, so as to achieve conductivity on the upper and lower sides of the composite material.

[0003] The patent name disclosed in the prior art with application number "CN201010188150.1" is "A rolling welding device for producing precious metal composite strips", which discloses that the base strip is clamped on the coil feeding mechanism, and the output torque is controlled to prepare and feed the material; the base strip is then sent to the flattening mechanism for shaping to correct the deformation caused by the early production of the coil or base strip, and the shaping gap is controlled to adapt to gaps of different thicknesses; the base strip is sent to the positioning mold through the guide mechanism to achieve subsequent positioning requirements; at the same time, the composite strip is also sent from the composite strip feeding tray to the positioning mold to jointly complete the positioning before welding, wherein the composite strip feeding tray and the coil feeding mechanism are both equipped with motors, which meet the needs of the production process by adjusting the torque, and produce different sizes according to different product requirements. After the mold, base tape and double tape are positioned, they are roll-welded at the roll-welding point. The welding current intensity and frequency can be adjusted according to the material and size of the base tape and double tape. In order to protect the welding electrode, cold water is added to the water cooling system during welding to ensure that related components will not be damaged due to excessive temperature during welding. A welding is installed at the upper electrode plate to ensure the welding strength by adjusting the pressure. The traction mechanism realizes the connection between the previous left and right processes and maintains the tension of the base tape and double tape during the entire working process. The welded products must also pass through the quality online detection device of the CCD industrial camera to display the size of the product in real time and alarm in time for unqualified products to avoid unnecessary waste. Finally, the material is collected through the coil unloading mechanism.

[0004] The patent name disclosed in the prior art with application number "CN202323195707.6" is "Ultrasonic Metal Winding and Rolling Welding Integrated Machine", which discloses that the main material belt conveying device also includes an unwinding correction actuator and an unwinding correction sensor. The unwinding correction actuator is arranged on the frame at the main material belt unwinding machine, and the unwinding correction sensor is located between the detection roller and the unwinding floating roller. The unwinding correction sensor is electrically connected to the unwinding correction actuator for detecting the edge position of the main material belt and sending it to the unwinding correction actuator. The edge position of the main material belt is detected in real time by the unwinding correction sensor and fed back to the unwinding correction actuator. When the edge of the main material belt deviates, the unwinding correction actuator The structure performs forward or reverse motion correction on the main material belt unwinding machine, compensates for the position error of the main material belt, and facilitates the overlapping alignment of the three-layer material belt. The main material belt conveying device also includes a front traction roller, which is rotatably set on the frame, and the front traction roller is located between the detection roller and the unwinding correction sensor. The material belt slides and overlaps on the front traction roller, and the front traction roller is higher than the unwinding correction sensor. The front traction roller helps to balance the posture of the main material belt before it enters the unwinding traction roller 17. The main material belt conveying device also includes a main material belt process correction mechanism, which is located between the unwinding traction roller and the welding device. The main material belt process correction mechanism helps to accurately adjust the position of the main material belt.

[0005] When the above-mentioned roll welding machine is in use, although the unwinding correction actuator, the unwinding correction sensor and the main material belt process correction mechanism can be used to correct the coil, due to the simple structure of the unwinding correction actuator and the main material belt process correction mechanism, only the first-level correction can be performed on the coil, and the second-level self-positioning correction cannot be performed on the coil, which makes the correction effect poor, resulting in poor alignment of the three coils, which in turn affects the quality of the subsequent ultrasonic roll welding operation and makes it easy to produce defective products after welding.

[0006] Therefore, we propose a self-positioning and deviation-correcting roll welding machine for composite materials to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide a self-positioning and correcting roll welding machine for composite materials, so as to solve the problem that the roll welding machines currently on the market can only perform primary correction on the coiled material, but cannot perform secondary self-positioning correction on the coiled material, thereby making the correction effect poor, resulting in poor alignment effect of the three coiled materials, which in turn affects the quality of the subsequent ultrasonic roll welding operation, making it easy for defective products to appear after welding.

[0008] To achieve the above object, the present invention provides the following technical solution: a self-positioning and deviation-correcting composite material roll welding machine, comprising an outer frame, and a control door installed on the front side of the outer frame;

[0009] A controller is installed on the left side of the outer frame;

[0010] A coating coil unwinding mechanism is installed inside the right side of the outer frame, and two metal material unwinding mechanisms are installed in the outer frames at the upper and lower left sides of the coating coil unwinding mechanism;

[0011] A coating coil winding mechanism is installed at the lower left side of the outer frame;

[0012] The coating coil unwinding mechanism, the metal material unwinding mechanism and the coating coil rewinding mechanism have the same structure, and a primary deviation correction mechanism is installed in both the coating coil unwinding mechanism and the metal material unwinding mechanism;

[0013] The left sides of the coating coil unwinding mechanism, the metal material unwinding mechanism and the coating coil rewinding mechanism are all equipped with a speed control mechanism and a tension control mechanism;

[0014] A secondary deviation correction mechanism for coating coil unwinding is installed on the left side of the tension control mechanism on the left side of the coating coil unwinding mechanism;

[0015] A secondary deviation correcting mechanism for metal materials is installed on the left side of the tension control mechanism on the left side of the metal material unwinding mechanism;

[0016] The secondary deflection correction mechanism for unwinding the coated coil and the rewinding mechanism for the coated coil are both equipped with an upper actuator for deflection correction;

[0017] A linear motion actuator for correction is installed inside the secondary correction mechanism for metal materials;

[0018] A rolling welding mechanism is installed in the outer frame on the left side of the secondary deviation correction mechanism for metal materials, and guide limiting roller assemblies are arranged on the left and right sides of the rolling welding mechanism. A CCD detection mechanism and a labeling mechanism are installed on the left side of the left guide limiting roller assembly, a shaping mechanism is arranged on the left side of the labeling mechanism, a winding secondary deviation correction mechanism is arranged on the left side of the shaping mechanism, and an active roller mechanism is arranged on the left side of the winding secondary deviation correction mechanism.

[0019] Preferably, the secondary deflection correction mechanism for unwinding the coated coil, the secondary deflection correction mechanism for metal materials and the coating coil winding mechanism are all composed of a conveying roller, a support plate and a deflection correction detection component;

[0020] Two support plates are provided, and two conveying rollers are symmetrically installed between the two support plates;

[0021] The deflection correction detection component in the secondary deflection correction mechanism of the coated coil unwinding is a linear array camera;

[0022] The deflection correction detection components in the secondary deflection correction mechanism for metal materials and the coating coil winding mechanism are both U-shaped edge detection sensors.

[0023] Preferably, the coating coil unwinding mechanism, the metal material unwinding mechanism and the coating coil rewinding mechanism are all composed of an inflatable shaft, a fixed frame, a slide rail assembly and a mounting plate, the mounting plate is mounted in the outer frame, the upper surface of the mounting plate is connected to the fixed frame through the slide rail assembly, the rear side of the fixed frame is connected to the primary deviation correction mechanism on the mounting plate, and the front side of the fixed frame is mounted with an inflatable shaft;

[0024] The shaping mechanism includes two steel rollers, and the first-level deviation correction mechanism is an adjusting cylinder.

[0025] Preferably, the speed control mechanism comprises a driven roller and an encoder, the rear end of the driven roller is equipped with an encoder, and the encoder is installed on a fixed frame;

[0026] The tension control mechanism includes an adjusting roller and a tension roller, the rear end of the adjusting roller is connected to the output end of the regulating cylinder in the outer frame, and the rear end of the tension roller is connected to the outer frame;

[0027] The rolling welding mechanism comprises a welding seat, a control cylinder and a welding head. The control cylinder is installed above the welding seat, and the welding head is arranged below the welding seat.

[0028] Preferably, the active roller mechanism comprises an active roller body and a pressure roller, and a pressure roller is arranged below the active roller body;

[0029] The rear ends of the coated coil unwinding secondary deviation correcting mechanism, the metal material secondary deviation correcting mechanism, the guide limit roller assembly, the CCD detection mechanism, the labeling mechanism, the shaping mechanism, the winding secondary deviation correcting mechanism and the active roller mechanism are all connected to the outer frame.

[0030] Preferably, a vertical rod is installed penetratingly inside one end of the upper actuator, and two vertical rods are installed in the secondary deviation correction mechanism of the coating coil unwinding. The lower ends of the two vertical rods are connected to the inner side surface of the support plate in the secondary deviation correction mechanism of the coating coil unwinding, and a transmission structure is formed below the two vertical rods through a sprocket assembly.

[0031] Preferably, the inner sides of the two conveying rollers in the secondary deflection correction mechanism for unwinding the coated coil are provided with first auxiliary deflection correction components, the upper surface of the first auxiliary deflection correction components is provided with grooves at equal intervals, and the two ends of the two first auxiliary deflection correction components are connected by a connecting frame.

[0032] Preferably, the lower outer side of the vertical rod is provided with a threaded structure, the lower outer side of the vertical rod is threadedly connected with a connecting block, and a connecting frame with a "U"-shaped structure is installed on the outer side of the connecting block;

[0033] The two first auxiliary deviation-correcting components form a lifting structure through a connecting frame, and the highest point of the first auxiliary deviation-correcting components rising is higher than the highest point of the conveying roller.

[0034] Preferably, a support block is installed on the bottom surface of the linear motion actuator, and a bidirectional lead screw and a limit rod are installed through the inside of the support block from top to bottom;

[0035] Both ends of the bidirectional screw rod and the limit rod are connected to the inner wall of the support plate in the secondary deviation correcting mechanism of the metal material, and the rear end of the bidirectional screw rod is connected to the motor in the outer frame.

[0036] Preferably, a rotating rod is installed on the inner side of the linear motion actuator, a second auxiliary deviation-correcting assembly is installed on the outer side of the middle part of the rotating rod, and the second auxiliary deviation-correcting assembly forms a rotating structure with the rotating rod as the center of the circle;

[0037] A vortex spring is nested and connected to the outside of one end of the rotating rod, and the other end of the vortex spring is connected to the linear motion actuator. A connecting rope is wrapped around the outside of the other end of the rotating rod, and the other end of the connecting rope passes through the interior of the linear motion actuator and is connected to the inner side of the support plate in the secondary correction mechanism of the metal material.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: the self-positioning and correcting composite material roll welding machine can control the self-positioning position accuracy of the three types of rolls within ±0.2mm through the coordinated use of the coating coil unwinding secondary correcting mechanism and the metal material secondary correcting mechanism, and ensure that the self-positioning alignment of the three types of rolls before entering the roll welding mechanism is within ±0.5mm, so that the three types of rolls are well self-positioned and aligned, thereby improving the quality of ultrasonic roll welding operations, significantly improving the manufacturing speed of composite material-based automotive lithium battery cells, and providing reliable technical support for the mass production of composite material-based automotive lithium battery cells. The specific contents are as follows:

[0039] The two layers of material are welded on both sides of the composite material by rolling welding to achieve electrical conductivity on both sides of the composite material. The running speed of the equipment is ≥40m / min, which ensures the welding quality and welding efficiency, and can significantly improve the manufacturing speed and manufacturing efficiency of automotive lithium battery cells based on composite materials.

[0040] By welding a layer of copper foil or aluminum foil on the front and back sides of the composite material, the conductivity of the front and back sides of the composite material is guaranteed. The equipment adopts the rolling welding method to ensure the welding speed of the three materials, the internal resistance of the composite material and the tensile force of the material after welding, providing reliable technical support for the mass production of automotive lithium battery cells based on composite materials.

[0041] (2) At the same time, the position of the air shaft in the coating coil unwinding mechanism and the metal material unwinding mechanism can be adjusted through the primary deviation correction mechanism, so that the three coils are well aligned and self-positioned during the initial unwinding;

[0042] Through the coordinated use of the secondary deflection correction mechanism for unwinding the coated coil and the secondary deflection correction mechanism for metal materials, the self-positioning accuracy of the three coils can be controlled within ±0.2mm, ensuring that the self-positioning alignment of the three coils before entering the roll welding mechanism is within ±0.5mm, so that the three coils can be well self-positioned and aligned. The three coils are stacked up and down, which is convenient for ultrasonic roll welding of the three coils into a whole in the later stage, thereby improving the quality of ultrasonic roll welding operations, avoiding defective products, and thus improving the qualified rate of composite materials after welding.

[0043] (3) While the upper actuator rotates to correct the deviation, it drives the first auxiliary correcting component to rise, and then the first auxiliary correcting component lifts the coated coil on the upper surface of the conveyor roller upward, so that the coated coil is separated from the surface of the conveyor roller. Since the upper surface of the first auxiliary correcting component is concave and convex, the first auxiliary correcting component can reduce the contact area with the coated coil, thereby reducing the friction between the coated coil and the first auxiliary correcting component, making it easier for the upper actuator to push the coated coil for self-positioning correction, and the operation is convenient.

[0044] (4) When the linear motion actuator is correcting the metal material, the second auxiliary correction component automatically rotates upward through the connecting rope. At this time, the second auxiliary correction component can lift the metal material on the upper surface of the conveyor roller upward, so that the metal material is separated from the conveyor roller, and then the friction between the metal material and the conveyor roller is reduced, which makes it easier for the linear motion actuator to perform self-positioning and correction of the metal material. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0046] Figure 2 This is a schematic diagram of the internal structure of the outer frame of the present invention;

[0047] Figure 3 It is a right side structural schematic diagram of the active roller mechanism of the present invention;

[0048] Figure 4 It is a front structural schematic diagram of the seam welding mechanism of the present invention;

[0049] Figure 5 It is a right-side perspective structural diagram of the coating coil unwinding mechanism of the present invention;

[0050] Figure 6 It is a right-side stereoscopic structural schematic diagram of the seam welding mechanism of the present invention;

[0051] Figure 7 It is a schematic diagram of the three-dimensional structure of the unwinding and deviation-correcting mechanism for coated coils of the present invention;

[0052] Figure 8It is a schematic diagram of the separation structure of the unwinding and correcting mechanism of the coated coil material and the upper actuator of the present invention;

[0053] Fig. 9 It is a schematic diagram of the three-dimensional structure of the metal material correction mechanism of the present invention;

[0054] Fig.10 It is a schematic diagram of the separation structure of the metal material deviation correction mechanism and the linear motion actuator of the present invention;

[0055] Fig.11 It is a schematic diagram of the three-dimensional structure of the linear motion actuator of the present invention;

[0056] Fig.12 It is a schematic diagram of the three-dimensional structure of the winding and correcting mechanism of the present invention.

[0057] In the figure: 1. outer frame; 2. control door; 3. controller; 4. coating coil unwinding mechanism; 41. air shaft; 42. fixed frame; 43. primary deviation correction mechanism; 44. slide rail assembly; 45. mounting plate; 5. metal material unwinding mechanism; 6. speed control mechanism; 61. driven roller; 62. encoder; 7. tension control mechanism; 71. adjustment roller; 72. tension roller; 8. secondary deviation correction mechanism for coating coil unwinding; 9. secondary deviation correction mechanism for metal material; 10. rolling welding mechanism; 101. welding seat; 102. control cylinder; 103. welding head; 11. CCD detection mechanism; 12. labeling mechanism; 13. shaping mechanism; 14 , winding two-stage deviation correction mechanism; 15, active roller mechanism; 151, active roller body; 152, pressure roller; 16, coating coil winding mechanism; 17, conveying roller; 18, support plate; 19, upper actuator; 191, vertical rod; 192, sprocket assembly; 20, linear motion actuator; 201, support block; 202, bidirectional lead screw; 203, limit rod; 21, first auxiliary deviation correction assembly; 211, connecting frame; 212, groove; 213, connecting block; 22, second auxiliary deviation correction assembly; 221, connecting rope; 222, rotating rod; 223, vortex spring; 23, deviation correction detection assembly; 24, guide limit roller assembly. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] See also Figure 1-Figure 12 , the present invention provides the following technical solutions:

[0060] Embodiment 1: The self-positioning and correcting composite material roll welding machine in this embodiment can not only perform primary correction processing, but also perform secondary self-positioning and correcting processing when in use, so that the correction effect is better, thereby improving the qualified rate of the composite material after roll welding, and refer to the attached Figure 1-Figure 9 And attached Fig.12 As shown, it includes an outer frame 1, and a control door 2 installed on the front side of the outer frame 1, a controller 3 is installed on the left side of the outer frame 1, a coating coil unwinding mechanism 4 is installed inside the right side of the outer frame 1, two metal material unwinding mechanisms 5 are installed in the outer frame 1 on the left upper and lower sides of the coating coil unwinding mechanism 4, and a coating coil winding mechanism 16 is installed on the lower left side of the outer frame 1. The coating coil unwinding mechanism 4, the metal material unwinding mechanism 5 and the coating coil winding mechanism 16 have the same structure, and the coating coil unwinding mechanism 4 and the metal material unwinding mechanism 5 are both installed with a primary deviation correction mechanism 43, and the coating coil The speed control mechanism 6 and the tension control mechanism 7 are installed on the left sides of the unwinding mechanism 4, the metal material unwinding mechanism 5 and the coated coil winding mechanism 16; the coated coil unwinding secondary deviation correction mechanism 8 is installed on the left side of the tension control mechanism 7 on the left side of the coated coil unwinding mechanism 4; the metal material secondary deviation correction mechanism 9 is installed on the left side of the tension control mechanism 7 on the left side of the metal material unwinding mechanism 5; the coated coil unwinding secondary deviation correction mechanism 8 and the coated coil winding mechanism 16 are both installed with an upper actuator 19 for deviation correction; the metal material secondary deviation correction mechanism 9 is installed with a linear motion actuator 20 for deviation correction.

[0061] A rolling welding mechanism 10 is installed in the outer frame 1 on the left side of the secondary deviation correction mechanism 9 for metal materials, and guide limiting roller assemblies 24 are arranged on the left and right sides of the rolling welding mechanism 10. A CCD detection mechanism 11 and a labeling mechanism 12 are installed on the left side of the guide limiting roller assembly 24 on the left side, a shaping mechanism 13 is arranged on the left side of the labeling mechanism 12, a winding secondary deviation correction mechanism 14 is arranged on the left side of the shaping mechanism 13, and an active roller mechanism 15 is arranged on the left side of the winding secondary deviation correction mechanism 14. The secondary deviation correction mechanism 8 for unwinding the coated coil, the secondary deviation correction mechanism 9 for metal materials and the winding mechanism 16 for the coated coil are all composed of a conveying roller 17, a support plate 18 and a deviation correction detection assembly 23; two support plates 18 are arranged, and two conveying rollers 17 are symmetrically installed between the two support plates 18.

[0062] The deflection correction detection component 23 in the secondary deflection correction mechanism 8 of the coated coil unwinding is a linear array camera, the deflection correction detection component 23 in the secondary deflection correction mechanism 9 of the metal material and the coating coil winding mechanism 16 are both U-shaped edge detection sensors, the coating coil unwinding mechanism 4, the metal material unwinding mechanism 5 and the coating coil winding mechanism 16 are all composed of an inflatable shaft 41, a fixed frame 42, a slide rail assembly 44 and a mounting plate 45, the mounting plate 45 is installed in the outer frame 1, the upper surface of the mounting plate 45 is connected to the fixed frame 42 through the slide rail assembly 44, the rear side of the fixed frame 42 is connected to the primary deflection correction mechanism 43 on the mounting plate 45, the front side of the fixed frame 42 is installed with an inflatable shaft 41, the shaping mechanism 13 includes two steel rollers, and the primary deflection correction mechanism 43 is an adjusting cylinder.

[0063] The speed control mechanism 6 includes a driven roller 61 and an encoder 62. The rear end of the driven roller 61 is equipped with an encoder 62, which is installed on the fixed frame 42. The tension control mechanism 7 includes an adjusting roller 71 and a tension roller 72. The rear end of the adjusting roller 71 is connected to the output end of the regulating cylinder in the outer frame 1, and the rear end of the tension roller 72 is connected to the inner part of the outer frame 1. The rolling welding mechanism 10 includes a welding seat 101, a control cylinder 102 and a welding head 103. The upper part of the welding seat 101 is equipped with a The control cylinder 102 and the welding head 103 are arranged below the welding seat 101. The active roller mechanism 15 includes an active roller body 151 and a pressure roller 152. The pressure roller 152 is arranged below the active roller body 151. The secondary deviation correction mechanism 8 for unwinding the coated coil, the secondary deviation correction mechanism 9 for metal materials, the guide limiting roller assembly 24, the CCD detection mechanism 11, the labeling mechanism 12, the shaping mechanism 13, the secondary deviation correction mechanism 14 for winding and the rear end of the active roller mechanism 15 are all connected to the outer frame 1.

[0064] A vertical rod 191 is installed through one end of the upper actuator 19, and two vertical rods 191 are installed in the secondary correction mechanism 8 for unwinding the coated coil. The lower ends of the two vertical rods 191 are connected to the inner side of the support plate 18 in the secondary correction mechanism 8 for unwinding the coated coil. A transmission structure is formed by a sprocket assembly 192 below the two vertical rods 191. A support block 201 is installed on the bottom surface of the linear motion actuator 20, and a bidirectional lead screw 202 and a limit rod 203 are installed through the inside of the support block 201 from top to bottom; both ends of the bidirectional lead screw 202 and the limit rod 203 are connected to the inner wall of the support plate 18 in the secondary correction mechanism 9 for metal materials, and the rear end of the bidirectional lead screw 202 is connected to the motor in the outer frame 1.

[0065] First, open the control door 2, and then put the rolled coated coil on the inflatable shaft 41 in the coated coil unwinding mechanism 4, and after adjusting to the set position, inflate the inflatable shaft 41 through external equipment, so that the rolled coated coil is stably mounted on the inflatable shaft 41, so that the rolled coated coil cannot move, as shown above. Similarly, put two rolled metal materials on the inflatable shaft 41 in the metal material unwinding mechanism 5, and after adjusting to the set position, inflate the inflatable shaft 41, so that the rolled metal materials are stably mounted on the inflatable shaft 41. The two metal materials can be copper foil or aluminum foil one, copper foil or aluminum foil two.

[0066] Then, the first-level deviation correction mechanism 43 in the unwinding mechanism 4 for coated coil and the unwinding mechanism 5 for metal material can be started, so that the adjusting cylinder in the first-level deviation correction mechanism 43 drives the fixed frame 42 to move. At this time, the bottom of the fixed frame 42 slides on the mounting plate 45 through the slide rail assembly 44, so that the front and rear positions of the three air shafts 41 can be initially self-positioned and adjusted, so that one coated coil and two metal materials on the three groups of air shafts 41 can be first-level deviation correction aligned, and then the three groups of unwinding servo motors are started, and the three groups of unwinding servo motors drive the three groups of air shafts 41 to rotate, so that the three groups of air shafts 41 can unwind one coated coil and two metal materials at the same time, and then one coated coil and two metal materials can be unwound. The metal materials pass through the three sets of speed control mechanisms 6 and the tension control mechanism 7 in turn. At this time, a coated coil and two metal materials will drive the driven roller 61 in the speed control mechanism 6 to rotate. At this time, the encoder 62 installed at the outer end of the driven roller 61 is used to calculate the number of rotations of the driven roller 61, and then the running speed of a coated coil and two metal materials is calculated according to the number of rotations and the diameter of the driven roller 61, and then fed back to the unwinding servo motor. If the unwinding speed of the pneumatic shaft 41 is too fast or too slow, the unwinding servo motor will slow down or speed up the rotation speed of the pneumatic shaft 41 to make the running speed of the coil constant. Theoretically, the running speed of the material can be guaranteed to deviate from the set value within 2%.

[0067] Then, the tension roller 72 in the tension control mechanism 7 can measure the tension of the coil through the tension sensor installed inside, and ensure the constant tension by adjusting the pressure. Theoretically, the tension of the coil can be guaranteed to deviate from the set value within 5%; the tension control mechanism 7 also includes an adjusting roller 71 connected to the regulating cylinder, and the regulating cylinder can drive the adjusting roller 71 to move, so as to adjust the placement position of the adjusting roller 71. This structure can ensure that the coil has a pre-tension during operation. At the same time, the tension control is also flexible control to prevent the tension of the coil from increasing or decreasing instantly, resulting in belt breakage.

[0068] Then, the coated coil comes out of the tension control mechanism 7 and enters the corresponding coated coil unwinding secondary deflection correction mechanism 8 on the left. At this time, the coated coil contacts the upper surface of the conveying roller 17 in the coated coil unwinding secondary deflection correction mechanism 8 and continues to be conveyed to the left. Similarly, the two metal materials come out of the tension control mechanism 7 and enter the corresponding metal material secondary deflection correction mechanism 9 on the left. At this time, the metal material contacts the upper surface of the conveying roller 17 in the metal material secondary deflection correction mechanism 9 and continues to be conveyed to the left. At this time, the deflection correction detection component 23 in the coated coil unwinding secondary deflection correction mechanism 8 starts to detect the edge position of the coated coil. The deflection correction detection component 23 in the coated coil unwinding secondary deflection correction mechanism 8 is a high-precision linear array camera. When the deflection correction detection component 23 is a high-precision linear array camera, the deflection correction detection component 23 ... When component 23 detects that the edge of the coated coil has deviated, the deviation correction detection component 23 transmits the signal to the central processing module in the controller 3. The central processing module controls the motor at the bottom of the rear vertical rod 191 to rotate. At this time, the motor drives the rear vertical rod 191 to rotate. At this time, the rear vertical rod 191 drives the front vertical rod 191 to rotate together through the sprocket assembly 192 on the lower outside, so that the two vertical rods 191 rotate at the same time. When the two vertical rods 191 rotate, they drive the upper actuator 19 to rotate, so that the upper actuator 19 pushes the coil above the conveying roller 17 to move to the middle, so that the coil reaches the specified position, ensuring that the position deviation of the edge of the coil is within ±0.2mm.

[0069] At the same time, the correction detection component 23 in the secondary correction mechanism 9 for metal materials begins to detect the edge positions of the two narrow metal materials. The correction detection component 23 in the secondary correction mechanism 9 for metal materials is a U-shaped edge detection sensor. When the correction detection component 23 detects that the edges of the two narrow metal materials are deviated, the correction detection component 23 transmits the signal to the central processing module in the controller 3. The central processing module controls the motor installed at the rear end of the bidirectional screw rod 202 to rotate, and the motor drives the bidirectional screw rod 202 to rotate. When the bidirectional screw rod 202 rotates, it drives the support blocks 201 at the outer ends to move inward at the same time. At this time, the support blocks 2 01 The outer side of the limit rod 203 slides, so that the support block 201 stably drives the two linear motion actuators 20 to move inward. At this time, the two linear motion actuators 20 push the edges of the two narrow metal materials when moving inward, so that the two narrow metal materials move forward or backward to the specified position, which is convenient for self-positioning and deviation correction of the two narrow metal materials, ensuring that the edge position deviation of the two narrow metal materials is also ±0.2mm. Therefore, through the joint use of the above three deviation correction structures, the coils are subjected to primary and secondary deviation correction, thereby ensuring that the alignment of the three coils before entering the rolling welding mechanism 10 is within ±0.5mm.

[0070] Then, after the deviation correction, the coated coil and the metal material are guided by the guide limiting roller assembly 24 on the right side of the roll welding mechanism 10 and enter the roll welding mechanism 10. At this time, the coated coil and the upper and lower metal materials are in contact with each other. At this time, the control cylinder 102 drives the welding seat 101 to move downward to a suitable position, so that the welding seat 101 is pressed on the welding head 103, and then the motor in the roll welding mechanism 10 drives the welding seat 101 and the welding head 103 to rotate. At this time, when the coated coil and the metal material pass between the welding head 103 and the welding seat 101, the ultrasonic vibration in the roll welding mechanism 10 will cause the welding head 103 to vibrate at 40kHz, and the amplitude of the vibration is 5μm-30μm. The coated coil and the metal material will generate local high temperature during ultrasonic vibration, so that the welding part is melted, so that the coated coil and the metal material are melted into a whole, thereby making the coated coil and the metal material well become a composite material through ultrasonic welding.

[0071] After welding is completed, the composite material moves to the left through the guide limiting roller assembly 24 on the left side of the rolling welding mechanism 10. At this time, the CCD detection mechanism 11 on the left side of the rolling welding mechanism 10 scans and detects the weld quality. The CCD detection mechanism 11 is a CCD linear array camera. If the weld quality is poor, it will be fed back to the labeling mechanism 12 on the left side. The labeling mechanism 12 will label the material to indicate poor welding. The specific structure of the labeling mechanism 12 of this application is the same as the labeling mechanism 12 on the market, so it will not be introduced in detail here.

[0072] Subsequently, the composite material enters the shaping mechanism 13. At this time, the shaping mechanism 13 composed of two steel rollers will shape the uneven weld marks on the surface of the composite material due to the unsatisfactory temperature control during the welding process. After shaping, the flatness of the weld marks is guaranteed to be within 0.1mm. Then the composite material enters the winding secondary deviation correction mechanism 14. At this time, the composite material contacts the upper surface of the conveying roller 17 in the winding secondary deviation correction mechanism 14. At this time, the deviation correction detection component 23 in the winding secondary deviation correction mechanism 14 detects the position of the edge of the coil. The deviation correction detection component 23 is a U-shaped edge detection sensor, as shown above. Similarly, when the deviation correction detection component 23 detects that the edge of the composite material is out of When deviation occurs, the correction detection component 23 transmits this signal to the central processing module in the controller 3, and the central processing module controls the motor at the bottom of the rear vertical rod 191 to rotate. At this time, the motor drives the rear vertical rod 191 to rotate. At this time, the rear vertical rod 191 drives the front vertical rod 191 to rotate together through the sprocket assembly 192 on the lower outside, so that the two vertical rods 191 rotate at the same time. When the two vertical rods 191 rotate, they drive the upper actuator 19 to rotate, so that the upper actuator 19 pushes the composite material above the conveying roller 17 to move to the middle, so that the composite material reaches the specified position, ensuring that the position deviation of the edge of the composite material is within ±0.2mm.

[0073] After the deviation correction, the composite material enters the active roller mechanism 15. The active roller mechanism 15 mainly provides power for the later coiling. The motor in the active roller mechanism 15 drives the active roller body 151 to rotate. At this time, the active roller body 151 and the pressure roller 152 cooperate with each other to transport the composite material downward. At this time, the composite material is wound by the air shaft 41 in the coating coil winding mechanism 16. The structure of the coating coil winding mechanism 16 is similar to that of the coating coil unwinding mechanism 4. The speed control mechanism 6 and the tension control mechanism 7 are also installed on the left side of the coating coil winding mechanism 16. The tension control mechanism 7 on the left side of the coating coil winding mechanism 16 is mainly used to control the tension of the wound composite material, and the allowable tension deviation value is 5%.

[0074] Thereby completing the entire ultrasonic welding roll welding operation and achieving conductivity on both sides of the composite material. The operating speed of the equipment is ≥40m / min, which not only ensures the quality of the weld print, but also ensures the efficiency of welding. It can significantly improve the manufacturing speed of automotive lithium battery cells based on composite materials, and provide reliable technical support for the mass production of automotive lithium battery cells based on composite materials, avoiding defective products, thereby improving the qualified rate of composite materials after welding.

[0075] Embodiment 2: The self-positioning corrective composite material rolling welding machine in this embodiment can further assist the coating coil unwinding secondary correcting mechanism 8 to perform correcting operations on the basis of embodiment 1 when in use, which can improve the efficiency of correcting adjustment. The specific structure is as follows: the inner sides of the two conveying rollers 17 in the coating coil unwinding secondary correcting mechanism 8 are provided with first auxiliary correcting components 21, and the upper surface of the first auxiliary correcting components 21 is provided with grooves 212 at equal intervals. The two ends of the two first auxiliary correcting components 21 are connected by a connecting frame 211, and the lower outer side of the vertical rod 191 is a threaded structure. The lower outer side of the vertical rod 191 is threadedly connected with a connecting block 213, and the outer side of the connecting block 213 is installed with a connecting frame 211 with a "U" shaped structure; the two first auxiliary correcting components 21 form a lifting structure through the connecting frame 211, and the highest point of the first auxiliary correcting component 21 rising is higher than the highest point of the conveying roller 17.

[0076] Refer to the attached Figure 7-Figure 8As shown, when the vertical rod 191 drives the upper actuator 19 to rotate, the threaded structure on the outer side below the vertical rod 191 will drive the connecting block 213 connected by the outer thread to move upward. At this time, the connecting block 213 drives the connecting frame 211 with a "U" shape structure to move upward, and then the connecting frame 211 drives the two first auxiliary correcting components 21 to move upward, so that the first auxiliary correcting component 21 pushes the coated coil on the conveying roller 17 upward, so that the coated coil is not in contact with the conveying roller 17. At the same time, due to the groove 212 opened on the upper surface of the first auxiliary correcting component 21, the upper surface of the first auxiliary correcting component 21 is a concave-convex structure, and then the first auxiliary correcting component 21 can reduce the contact area and friction with the coated coil, so that it is convenient for the upper actuator 19 to quickly push the side of the coated coil when rotating, and then it can assist the upper actuator 19 in the secondary correcting mechanism 8 of the coated coil unwinding to quickly perform the correcting operation, which is convenient for improving the quality of the rolling welding in the later stage.

[0077] Embodiment 3: The self-positioning corrective composite material rolling welding machine in this embodiment can further assist the secondary correcting mechanism 9 of metal materials in performing correcting operations on the basis of Embodiment 1 when in use, which can improve the efficiency of correcting adjustment. The specific structure is as follows: a rotating rod 222 is installed on the inner side surface of the linear motion actuator 20, and a second auxiliary correcting component 22 is installed on the outer side of the middle part of the rotating rod 222. The second auxiliary correcting component 22 forms a rotating structure with the rotating rod 222 as the center of the circle. A vortex spring 223 is nested and connected to the outer side of one end of the rotating rod 222, and the other end of the vortex spring 223 is connected to the linear motion actuator 20. A connecting rope 221 is wrapped around the outer side of the other end of the rotating rod 222, and the other end of the connecting rope 221 passes through the interior of the linear motion actuator 20 and is connected to the inner side surface of the support plate 18 in the secondary correcting mechanism 9 of the metal material.

[0078] When the bidirectional screw rod 202 rotates and drives the two linear motion actuators 20 to move inward at the same time, at this time, since one end of the connecting rope 221 is connected to the support plate 18, the connecting rope 221 is pulled, and the connecting rope 221 drives the rotating rod 222 to rotate. At this time, the rotating rod 222 drives the second auxiliary correcting component 22 to rotate. At this time, the vortex spring 223 accumulates force, and the second auxiliary correcting component 22 rotates upward with the center of the rotating rod 222 as the center. At this time, the outer end of the second auxiliary correcting component 22 will push the metal material on the conveying roller 17 upward, so that the metal material does not contact the conveying roller 17, which can reduce the contact area and friction between the conveying roller 17 and the metal material. Therefore, it is convenient for the linear motion actuator 20 to quickly push the side of the metal material when moving, and then it can assist the linear motion actuator 20 in the secondary correcting mechanism 9 of the metal material to quickly perform the correcting operation, which is convenient for improving the quality of the rolling welding in the later stage, thereby completing a series of tasks.

[0079] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-positioning and deflection-correcting composite material roll welding machine, comprising an outer frame (1), and a control door (2) mounted on the front side of the outer frame (1); A controller (3) is installed on the left side of the outer frame (1); Features: A coating coil unwinding mechanism (4) is installed inside the right side of the outer frame (1), and two metal material unwinding mechanisms (5) are installed inside the outer frame (1) above and below the left side of the coating coil unwinding mechanism (4); A coating coil reeling mechanism (16) is installed at the lower left side of the outer frame (1); The coating coil unwinding mechanism (4), the metal material unwinding mechanism (5) and the coating coil rewinding mechanism (16) have the same structure, and the coating coil unwinding mechanism (4) and the metal material unwinding mechanism (5) are both equipped with a primary deviation correction mechanism (43); A speed control mechanism (6) and a tension control mechanism (7) are installed on the left sides of the coating coil unwinding mechanism (4), the metal material unwinding mechanism (5) and the coating coil rewinding mechanism (16); A secondary deviation correction mechanism (8) for unwinding the coated coil is installed on the left side of the tension control mechanism (7) on the left side of the coated coil unwinding mechanism (4); A secondary deviation correcting mechanism (9) for metal materials is installed on the left side of the tension control mechanism (7) on the left side of the metal material unwinding mechanism (5); The coated coil unwinding secondary deviation-correcting mechanism (8) and the coated coil rewinding mechanism (16) are both equipped with an upper actuator (19) for deviation correction; A linear motion actuator (20) for correcting the deviation is installed inside the secondary deviation correcting mechanism (9) for metal materials; A rolling welding mechanism (10) is installed in the outer frame (1) on the left side of the secondary deviation-correcting mechanism (9) for metal materials, and guide limiting roller assemblies (24) are arranged on both the left and right sides of the rolling welding mechanism (10), and a CCD detection mechanism (11) and a labeling mechanism (12) are installed on the left side of the guide limiting roller assembly (24) on the left side, and a shaping mechanism (13) is arranged on the left side of the labeling mechanism (12), and a winding secondary deviation-correcting mechanism (14) is arranged on the left side of the shaping mechanism (13), and an active roller mechanism (15) is arranged on the left side of the winding secondary deviation-correcting mechanism (14).

2. The self-positioning and deviation-correcting composite material roll welding machine according to claim 1, characterized in that: The coated coil unwinding secondary deviation correction mechanism (8), the metal material secondary deviation correction mechanism (9) and the coated coil rewinding mechanism (16) are all composed of a conveying roller (17), a support plate (18) and a deviation correction detection component (23); Two support plates (18) are provided, and two conveying rollers (17) are symmetrically mounted between the two support plates (18); The deflection correction detection component (23) in the secondary deflection correction mechanism (8) for unwinding the coated coil is a linear array camera; The metal material secondary deviation correction mechanism (9) and the deviation correction detection component (23) in the coating coil winding mechanism (16) are both U-shaped edge detection sensors.

3. The self-positioning and deviation-correcting composite material roll welding machine according to claim 1, characterized in that: The coating coil unwinding mechanism (4), the metal material unwinding mechanism (5) and the coating coil rewinding mechanism (16) are all composed of an inflatable shaft (41), a fixed frame (42), a slide rail assembly (44) and a mounting plate (45); the mounting plate (45) is mounted in the outer frame (1); the upper surface of the mounting plate (45) is connected to the fixed frame (42) via the slide rail assembly (44); the rear side of the fixed frame (42) is connected to the primary deviation correction mechanism (43) on the mounting plate (45); and the front side of the fixed frame (42) is mounted with an inflatable shaft (41); The shaping mechanism (13) comprises two steel rollers, and the first-level deviation correcting mechanism (43) is an adjusting cylinder.

4. The self-positioning and deviation-correcting composite material roll welding machine according to claim 1, characterized in that: The speed control mechanism (6) comprises a driven roller (61) and an encoder (62), wherein the encoder (62) is mounted on the rear end of the driven roller (61), and the encoder (62) is mounted on the fixed frame (42); The tension control mechanism (7) comprises an adjusting roller (71) and a tension roller (72), wherein the rear end of the adjusting roller (71) is connected to the output end of the regulating cylinder in the outer frame (1), and the rear end of the tension roller (72) is connected to the inside of the outer frame (1); The rolling welding mechanism (10) comprises a welding seat (101), a control cylinder (102) and a welding head (103); the control cylinder (102) is installed above the welding seat (101), and the welding head (103) is arranged below the welding seat (101).

5. The self-positioning and deviation-correcting composite material roll welding machine according to claim 1, characterized in that: The active roller mechanism (15) comprises an active roller body (151) and a pressure roller (152), wherein the pressure roller (152) is arranged below the active roller body (151); The rear ends of the coated coil unwinding secondary deviation correction mechanism (8), the metal material secondary deviation correction mechanism (9), the guide limit roller assembly (24), the CCD detection mechanism (11), the labeling mechanism (12), the shaping mechanism (13), the rewinding secondary deviation correction mechanism (14) and the active roller mechanism (15) are all connected to the inside of the outer frame (1).

6. The self-positioning and deviation-correcting composite material roll welding machine according to claim 2, characterized in that: A vertical rod (191) is installed through one end of the upper actuator (19), and two vertical rods (191) are installed in the secondary deflection-correcting mechanism (8) for unwinding the coated coil material. The lower ends of the two vertical rods (191) are connected to the inner side surface of the support plate (18) in the secondary deflection-correcting mechanism (8) for unwinding the coated coil material, and a transmission structure is formed below the two vertical rods (191) through a sprocket assembly (192).

7. The self-positioning and deviation-correcting composite material roll welding machine according to claim 6, characterized in that: First auxiliary deflection-correcting components (21) are arranged on the inner sides of the two conveying rollers (17) in the coated coil unwinding secondary deflection-correcting mechanism (8), grooves (212) are arranged at equal intervals on the upper surface of the first auxiliary deflection-correcting components (21), and both ends of the two first auxiliary deflection-correcting components (21) are connected via a connecting frame (211).

8. The self-positioning and deviation-correcting composite material roll welding machine according to claim 7, characterized in that: The lower outer side of the vertical rod (191) is provided with a threaded structure, the lower outer side of the vertical rod (191) is threadedly connected to a connecting block (213), and a connecting frame (211) with a "U"-shaped structure is installed on the outer side of the connecting block (213); The two first auxiliary deviation-correcting components (21) form a lifting structure via a connecting frame (211), and the highest point of the first auxiliary deviation-correcting components (21) when they are lifted is higher than the highest point of the conveying roller (17).

9. The self-positioning and deviation-correcting composite material roll welding machine according to claim 1, characterized in that: A support block (201) is installed on the bottom surface of the linear motion actuator (20), and a bidirectional lead screw (202) and a limit rod (203) are installed through the interior of the support block (201) from top to bottom; Both ends of the bidirectional screw rod (202) and the limiting rod (203) are connected to the inner wall of the support plate (18) in the secondary deviation correcting mechanism (9) of the metal material, and the rear end of the bidirectional screw rod (202) is connected to the motor in the outer frame (1).

10. The self-positioning and deviation-correcting composite material roll welding machine according to claim 1, characterized in that: A rotating rod (222) is installed on the inner side of the linear motion actuator (20), a second auxiliary deviation-correcting component (22) is installed on the outer side of the middle part of the rotating rod (222), and the second auxiliary deviation-correcting component (22) forms a rotating structure with the rotating rod (222) as the center of the circle; A vortex spring (223) is nested and connected to the outside of one end of the rotating rod (222); the other end of the vortex spring (223) is connected to the linear motion actuator (20); a connecting rope (221) is wound around the outside of the other end of the rotating rod (222); the other end of the connecting rope (221) passes through the inside of the linear motion actuator (20) and is connected to the inner side surface of the support plate (18) in the secondary deviation correcting mechanism (9) of the metal material.

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