A plastic battery panel laser automatic welding production line

Abstract

The present invention discloses a plastic battery panel automatic laser welding production line, comprising a line body, a black plate feed assembly, a white plate feed assembly, and a laser welding assembly; a plurality of tooling plates are arranged in sequence along the transmission direction on the line body; each tooling plate comprises a base plate, a material limiting plate, and a vacuum adsorption plate; the laser welding assembly is arranged at a laser welding station, comprising a base plate lifting mechanism, a vacuum adsorption plate lifting mechanism, a compression welding assembly, and a plastic plate welding positioning mechanism; the plastic plate welding positioning mechanism can position both the white and black plastic plates at the laser welding station; the compression welding assembly comprises a transparent glass plate and a laser welding gun; the transparent glass plate is positioned directly above the laser welding station and its height remains unchanged; the laser welding gun is positioned above the transparent glass plate and can move two-dimensionally according to a set welding path. The present invention can accurately ensure the position of welded parts, thereby improving the quality of the finished welded parts and welding efficiency.

Description

Technical Field

[0001] The present invention relates to the field of production and manufacturing of liquid flow batteries, in particular to a plastic battery plate laser automatic welding production line. Background Art

[0002] Liquid flow battery production requires bipolar plates, which are welded to the flow field frame. Both the bipolar plates and the flow field frame are rectangular plastic plates. The bipolar plates are black, also known as black plastic plates, while the flow field frame is white, also known as white plastic plates. The white plastic plates are larger in area than the black plastic plates.

[0003] In the field of plastic welding, welding is a commonly used secondary processing method for plastics, allowing them to be processed and modified into desired shapes. However, traditional plastic welding methods also have drawbacks, such as low bonding efficiency, weak joint strength, and significant environmental impact. Hot plate welding can easily cause plastic parts to adhere to the heating tool, resulting in air pollution. Vibration welding and ultrasonic welding can also cause residual vibration and thermal stresses in the final product, accelerating product aging. Laser welding can reduce these issues and significantly improve welding efficiency.

[0004] Laser welding technology uses lasers to create a high-temperature melt, joining two parts. With the development of new material processing technologies, plastics, due to their lightweight, corrosion-resistant, insulating, and excellent molding and processing properties, have largely replaced traditional materials such as metals and ceramics. They are widely used in aviation, shipbuilding, automotive, energy storage batteries, medical devices, food packaging, and daily chemical applications. The quality of plastic joining processes is crucial to their widespread application. Plastic laser welding is an efficient and high-precision joining technology that uses a laser beam to weld two or more plastic parts.

[0005] Currently, the dimensions of white and black plastic sheets can vary significantly, making it crucial to ensure the correct positioning of the welded parts during welding. This not only improves the quality of the finished welded parts but also increases welding efficiency. Traditional welding equipment uses manual loading, which can easily result in incomplete welds, numerous holes, and numerous safety hazards. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a plastic battery panel laser automatic welding production line in view of the deficiencies of the above-mentioned prior art.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A plastic battery panel automatic laser welding production line comprises a line body, a black plate feed assembly, a white plate feed assembly and a laser welding assembly.

[0009] The plastic battery panel includes a white plastic panel and a black plastic panel that are coaxially welded and both are rectangular; wherein the area of ​​the white plastic panel is larger than that of the black plastic panel.

[0010] The line is equipped with black plate loading station, white plate loading station and laser welding station in sequence along the transmission direction.

[0011] Several tooling plates are arranged in sequence along the transmission direction on the line.

[0012] Each tooling plate includes a base plate, a material limiting plate and a vacuum adsorption plate.

[0013] The material limiting plate is coaxially installed just above the base plate, and a black plate limiting groove is provided in the center of the material limiting plate, in which the vacuum adsorption plate is embedded, and a floating lifting rod extending out from the bottom surface of the base plate is provided at the bottom of the vacuum adsorption plate, and a number of vacuum adsorption holes are evenly distributed on the vacuum adsorption plate; when the floating lifting rod is not driven by external force, the top surface of the vacuum adsorption plate is lower than the top surface of the material limiting plate, and the black plastic plate can be placed in the black plate limiting groove on the top surface of the vacuum adsorption plate.

[0014] The top surface of the material limiting plate is coaxially provided with a white plate limiting groove connected to the black plate limiting groove, which can hold a white plastic plate.

[0015] The black plate loading assembly is arranged outside the black plate loading station, and can place the black plastic plate in the black plate limiting groove on the top surface of the vacuum adsorption plate of the tooling plate located at the black plate loading station.

[0016] The white plate loading component is arranged outside the white plate loading station, and can place the white plastic plate in the white plate limiting groove of the tooling plate located at the white plate loading station.

[0017] The laser welding assembly is arranged at the laser welding station, and includes a bottom plate lifting mechanism, a vacuum adsorption plate lifting mechanism, a pressing welding assembly and a plastic plate welding positioning mechanism.

[0018] The bottom plate lifting mechanism and the vacuum adsorption plate lifting mechanism are both arranged directly below the laser welding station. The bottom plate lifting mechanism can lift the tooling plate directly above it as a whole; the vacuum adsorption plate lifting mechanism can lift the vacuum adsorption plate directly above it.

[0019] The plastic plate welding positioning mechanism is arranged outside the laser welding station and can position both the white plastic plate and the black plastic plate located at the laser welding station.

[0020] The compression welding assembly is arranged directly above the laser welding station, including a transparent glass plate and a laser welding gun; the transparent glass plate is located directly above the laser welding station and its height position remains unchanged; the laser welding gun is located above the transparent glass plate and can move in two dimensions according to the set welding path.

[0021] The plastic plate welding positioning mechanism includes a white plate welding positioning mechanism and a black plate welding positioning mechanism.

[0022] The white plate welding positioning mechanism includes a white plate transverse positioning mechanism and a white plate longitudinal positioning mechanism; wherein, the white plate transverse positioning mechanism is used for transverse positioning of the white plastic plate, and the white plate longitudinal positioning mechanism is used for longitudinal positioning of the white plastic plate.

[0023] The white board transverse positioning mechanism and the white board longitudinal positioning mechanism both comprise a white board positioning groove, a white board positioning guide plate, a white board positioning guide column and a white board positioning side pushing device.

[0024] The white plate positioning groove is arranged through the outer edge of the material limiting plate and is communicated with the white plate limiting groove.

[0025] The white board positioning guide plate is arranged outside the white board limiting groove, and the white board positioning guide plate facing the white board limiting groove is provided with the white board positioning guide column, which can cooperate with the white board limiting groove.

[0026] The white board positioning side pushing device can be used to drive the white board positioning guide plate to slide horizontally or vertically.

[0027] The black plate welding positioning mechanism includes a black plate transverse positioning mechanism and a black plate longitudinal positioning mechanism; wherein, the black plate transverse positioning mechanism is used for transverse positioning of the black plastic plate, and the black plate longitudinal positioning mechanism is used for longitudinal positioning of the black plastic plate.

[0028] The black plate transverse positioning mechanism and the black plate longitudinal positioning mechanism both comprise a black plate elastic positioning rod, a black plate positioning guide plate and a black plate positioning side pushing device.

[0029] The black plate elastic positioning rod is embedded in the material limiting plate outside the black plate limiting groove in the horizontal or vertical direction. The outer end surface of the black plate elastic positioning rod extends from the material limiting plate, and the inner end surface of the black plate elastic positioning rod can contact the black plastic plate in the black plate limiting groove.

[0030] The black plate positioning guide plate can slide in the horizontal or vertical direction under the drive of the black plate positioning side pushing device, thereby driving the black plate elastic positioning rod to move toward the black plate limiting groove.

[0031] The length directions of the white plastic plate and the black plastic plate are both along the transmission direction of the wire body.

[0032] Each black plate transverse positioning mechanism and each black plate longitudinal positioning mechanism has two black plate elastic positioning rods arranged in parallel; the outer end surfaces of the two black plate elastic positioning rods can contact the corresponding black plate positioning guide plates.

[0033] A black plate side push limiting plate is provided at the center of the black plate positioning guide plate facing the black plastic plate, and the black plate side push limiting plate is located between the two black plate elastic positioning rods.

[0034] The white board positioning guide post is tangent to the white board positioning guide plate, and the height of the white board positioning guide post is greater than the height of the white board positioning guide plate.

[0035] The bottom surface of the white plate positioning guide column is located below the bottom surface of the white plate positioning guide plate; the height of the white plate positioning guide plate is greater than the height of the material limiting plate.

[0036] Both the black plate loading assembly and the white plate loading assembly include a feeding table, a material box, a material plate positioning table and a loading robot.

[0037] The feeding table is arranged on one side of the black plate loading station or the white plate loading station and is used for placing the material box.

[0038] Several white plastic sheets or black plastic sheets are stacked in the material box.

[0039] The material plate positioning table is arranged between the feeding table and the line body, and can position the white plastic plate or the black plastic plate.

[0040] Several suction cups are set at the bottom of the loading robot, and the loading robot can move between the feeding table, the material plate positioning table, and the black plate loading station or the white plate loading station.

[0041] The material plate positioning table is provided with a transverse reference edge, a longitudinal reference edge, a transverse push block and a longitudinal push block; the transverse reference edge and the longitudinal reference edge are arranged in an L shape, the transverse push block can slide toward the transverse reference edge; the longitudinal push block can slide toward the longitudinal reference edge.

[0042] The line is also equipped with a dust cleaning station and a finished product unloading station.

[0043] The dust cleaning station is set upstream of the black plate feeding station to clean the dust in the tooling plate.

[0044] The finished product unloading station is set downstream of the laser welding station. A finished product unloading robot is set on one side of the finished product unloading station to unload the finished plastic plate welding products from the line.

[0045] There are multiple laser welding stations arranged in parallel, and each laser welding station can realize the welding of plastic battery panels on two adjacent tooling plates.

[0046] The line body is a closed-loop rotary line body, including an upper line body, a lower line body and two sets of tooling plate rotary assemblies; the black plate loading station, white plate loading station and laser welding station are all arranged along the transmission direction of the upper line body; the lower line body is arranged parallel to and directly below the upper line body; the two sets of tooling plate rotary assemblies are respectively arranged at both ends of the upper line body and the lower line body, which are used for lifting and transporting the tooling plates on the upper and lower line bodies.

[0047] The present invention has the following beneficial effects:

[0048] 1. The technical method and production line of this invention completely replace manual welding and solve the problem of inaccurate positioning of welded parts in the traditional welding process. A new positioning mechanism is designed to position plastic sheets of different sizes. The entire process from product loading, welding, and workpiece flow is fully automated, solving the problem of unstable product welding quality and improving the efficiency of the production line.

[0049] 2. During the welding process of plastic sheets, the lifting platform rises and applies pressure to the positioned plastic sheets. The magnitude of the pressure determines the degree of fit of the plastic sheets and also determines the welding quality. The present invention provides a calculation method for the pressure magnitude, calculates the appropriate pressure value and improves the welding quality. This method is suitable for machine-light welding of sheets of different sizes and materials.

[0050] 3. A welding method is provided, in which a welding strip is set on the welding surface of the first plastic part, and a welding groove is opened on the welding surface of the second plastic part; during the welding process, the lifting platform first lifts the tooling plate and the material to a suitable position, and the cylindrical pressure plate is driven by the cylinder to fix the first plastic battery panel, and then the pressure plate is driven by the cylinder to press the side columns around the tooling plate to position the second plastic battery panel. After the positioning is completed, the lifting platform rises to press the first plastic part and the second plastic part together, so that the welding strip is pressed on the bottom of the welding groove for laser welding.

[0051] 4. The present invention provides an excellent basis for the automated welding of microporous membrane laser welding lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 The schematic diagram shows the structure of a plastic battery panel automatic laser welding production line of the present invention.

[0053] Figure 2 A schematic diagram of the three-dimensional structure of the tooling plate in the present invention is shown.

[0054] Figure 3 A schematic diagram of the top structure of the tooling plate in the present invention is shown.

[0055] Figure 4 Shown is a structural schematic diagram of the tooling plate rotation assembly in the present invention.

[0056] Figure 5 Shown is a schematic structural diagram of the black plate feed assembly in the present invention.

[0057] Figure 6 Shown is a structural schematic diagram of the material plate positioning platform in the present invention.

[0058] Figure 7 Shown is a schematic structural diagram of the laser welding assembly in the present invention.

[0059] Figure 8 A three-dimensional structural diagram of the plastic plate welding positioning mechanism of the present invention is shown.

[0060] Figure 9 Shows a top view of the plastic plate welding positioning mechanism of the present invention.

[0061] Figure 10 Shows a schematic structural diagram of the plastic battery panel of the present invention.

[0062] Among them are:

[0063] 01. Tooling plate rotation assembly; 101. Rotating frame; 102. Upper workstation; 103. Lower workstation; 104. Lifting backplate; 105. Backplate lifting drive mechanism; 106. Tooling plate conveying mechanism; 107. Conveyor rail; 108. Conveyor motor; 109. Conveyor shaft;

[0064] 02. Tray vacuum assembly;

[0065] 03. Black plate feeding assembly; 301. Longitudinal servo motor; 302. Suction cup; 303. Horizontal servo motor; 304. Material box; 305. Feeding table; 306. Material plate positioning table; 3061. Horizontal push block; 3062. Longitudinal push block; 3063. Longitudinal reference edge; 3064. Horizontal reference edge;

[0066] 04. White sheet blanking components;

[0067] 05. The first laser welding assembly;

[0068] 51. Bottom plate lifting mechanism; 52. Vacuum adsorption plate lifting mechanism;

[0069] 53. Compression welding assembly; 531. Pressing plate; 532. Transparent glass plate; 533. Laser welding gun; 534. Two-dimensional moving frame for welding gun;

[0070] 54. Plastic plate welding positioning mechanism;

[0071] 06. Second laser welding assembly; 07. Third laser welding assembly; 08. Fourth laser welding assembly; 09. Fifth laser welding assembly; 10. Sixth laser welding assembly;

[0072] 11. Finished product unloading robot;

[0073] 12. Linear body;

[0074] 13. Tooling plate; 131. Bottom plate; 132. Material limiting plate; 132a. White plate limiting slot; 132b. Black plate limiting slot; 132c. Floating lift rod; 132d. Vacuum plate limiting spring; 133. Vacuum plate; 134. White plate positioning slot; 135. Black plate elastic positioning rod;

[0075] 141. White plastic sheet; 142. Black plastic sheet. DETAILED DESCRIPTION

[0076] The present invention will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0077] In the description of the present invention, it should be understood that the terms "left side," "right side," "upper," "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Terms such as "first" and "second" do not indicate the importance of components and therefore should not be construed as limitations on the present invention. The specific dimensions used in this embodiment are intended only to illustrate the technical solution and do not limit the scope of protection of the present invention.

[0078] like Figure 10 As shown, the plastic battery panels include coaxially welded rectangular white plastic plates 141 and black plastic plates 142. The white plastic plates are larger in area than the black plastic plates. In this embodiment, the white plastic plates serve as flow field frames with central cavities, while the black plastic plates serve as bipolar plates for the flow battery. The bipolar plates are welded to the central cavities of the flow field frames.

[0079] like Figure 1 As shown, a plastic battery panel laser automatic welding production line preferably includes a line body 12, a tray dust collection component 02, a black plate feeding component 03, a white plate feeding component 04, a laser welding component and a finished product unloading robot 11.

[0080] The line body is a closed-loop rotary line body, including an upper line body, a lower line body and two sets of tooling plate rotary components 01.

[0081] Several tooling plates are arranged in sequence on the upper and lower line bodies along the transmission direction. The length directions of the white plastic plates and black plastic plates on the tooling plates are preferably along the transmission direction of the line bodies.

[0082] like Figure 2 、 Figure 3 and Figure 8 As shown, each tooling plate 13 includes a bottom plate 131 , a material limiting plate 132 and a vacuum adsorption plate 133 .

[0083] The material limiting plate is coaxially installed just above the bottom plate. A black plate limiting groove 132b is provided in the center of the material limiting plate. A vacuum adsorption plate is embedded in the black plate limiting groove. A floating lifting rod 132c extending from the bottom surface of the bottom plate is provided at the bottom of the vacuum adsorption plate. Several vacuum adsorption holes are evenly distributed on the vacuum adsorption plate.

[0084] The floating lifting rod located below the bottom plate is provided with a vacuum adsorption plate limiting spring 132d, which can ensure that when the floating lifting rod is not driven by external force, the vacuum adsorption plate is located at the bottom of the black plate limiting groove, so that the top surface of the vacuum adsorption plate is lower than the top surface of the material limiting plate, and the black plastic plate can be placed in the black plate limiting groove on the top surface of the vacuum adsorption plate.

[0085] The top surface of the material limiting plate is coaxially provided with a white plate limiting groove 132a which is connected to the black plate limiting groove and can accommodate a white plastic plate.

[0086] Two sets of tooling plate rotation components are respectively arranged at the two ends of the upper line body and the lower line body, and are used for lifting and transporting the tooling plates on the upper line body and the lower line body.

[0087] like Figure 4 As shown, each tooling plate rotating assembly includes a rotating frame 101 , a lifting back plate 104 , a back plate lifting drive mechanism 105 and a tooling plate conveying mechanism 106 .

[0088] The rotary frame has an upper station 102 and a lower station 103. The upper station is at the same height as the upper line body, and the lower station is at the same height as the lower line body.

[0089] The tooling plate conveyor mechanism is mounted on a rotating frame via a lifting backplate. Driven by the backplate lifting drive mechanism, it can reciprocate between the upper and lower workstations. Furthermore, the tooling plate conveyor mechanism itself features a conveyor rail 107 oriented in the same direction as the line. A number of conveyor shafts 109 are positioned equidistantly along the center of the rail, along the transmission direction. Driven by a conveyor motor 108, all shafts rotate synchronously, transporting the tooling plates positioned above them. The conveyor motor and the backplate lifting drive mechanism work together to lift and transfer tooling plates between the upper and lower lines.

[0090] The upper line body is provided with a dust cleaning station, a black plate loading station, a white plate loading station, a laser welding station and a finished product unloading station in sequence along the transmission direction.

[0091] The dust cleaning station is preferably provided with a tray dust collection assembly 02 for cleaning the dust in the tooling plate.

[0092] When the tooling board reaches the dust cleaning station, it stops. The tray dust collection component generates a strong negative pressure suction through the built-in motor or fan, and fits the surface of the tooling board through a specially designed suction nozzle or suction head. The suction nozzle is tightly attached to the surface of the tooling board to form a closed space. The negative pressure suction draws the air, dust and debris in the space into the equipment through the suction nozzle. After the tooling board is dusted, it flows into the next station.

[0093] The black plate loading assembly is arranged outside the black plate loading station, and can place the black plastic plate in the black plate limiting groove on the top surface of the vacuum adsorption plate of the tooling plate located at the black plate loading station.

[0094] The white plate loading component is arranged outside the white plate loading station, and can place the white plastic plate in the white plate limiting groove of the tooling plate located at the white plate loading station.

[0095] like Figure 5 As shown, the black plate loading assembly and the white plate loading assembly both include a feeding table 305, a material box 304, a material plate positioning table 306 and a loading robot.

[0096] The feeding table is arranged on one side of the black plate loading station or the white plate loading station and is used for placing a plurality of material boxes.

[0097] Several white plastic sheets or black plastic sheets are stacked in each material box.

[0098] The material plate positioning table is arranged between the feeding table and the line body, and can position the white plastic plate or the black plastic plate.

[0099] A plurality of suction cups 302 are provided at the bottom of the loading robot, and the loading robot can move between the feeding table, the material plate positioning table, and the black plate loading station or the white plate loading station.

[0100] Furthermore, the loading robot includes a two-dimensional movable frame, the bottom of which can be equipped with the above-mentioned suction cup. The two-dimensional movable frame can slide in a direction perpendicular to the wire body under the drive of the longitudinal servo motor 301; the two-dimensional movable frame can also slide along the direction of the wire body under the drive of the transverse servo motor 303.

[0101] like Figure 6 As shown, the material plate positioning table is provided with a transverse reference edge 3063, a longitudinal reference edge 3064, a transverse push block 3061 and a longitudinal push block 3062; the transverse reference edge and the longitudinal reference edge are arranged in an L shape, and the transverse push block can slide toward the transverse reference edge; the longitudinal push block can slide toward the longitudinal reference edge.

[0102] First, the horizontal push block and the vertical push block slide outward. After the loading robot places the white plastic plate or the black plastic plate on the material plate positioning table, the horizontal push block and the vertical push block slide inward until the two adjacent side edges of the white plastic plate or the black plastic plate are respectively against the horizontal reference edge and the vertical reference edge, thereby achieving the positioning of the white plastic plate or the black plastic plate.

[0103] The loading robot absorbs the white plastic plate or black plastic plate positioned on the material plate positioning table and places it on the tooling plate of the black plate loading station or the white plate loading station. The vacuum adsorption plate in the tooling plate can position and adsorb the black plastic plate.

[0104] The laser welding assembly is arranged at a laser welding station. Furthermore, there are preferably multiple laser welding stations arranged in parallel. In this embodiment, there are preferably six. Each laser welding station is preferably capable of welding plastic battery panels on two adjacent tooling plates. Therefore, there are also six sets of laser welding assemblies, namely, a first laser welding assembly 05, a second laser welding assembly 06, a third laser welding assembly 07, a fourth laser welding assembly 08, a fifth laser welding assembly 09, and a sixth laser welding assembly 10, arranged sequentially along the transmission direction of the line.

[0105] Further, if Figure 1 As shown, the upper line body is also provided with a welding auxiliary line body, the downstream side of which is connected to the upper line body downstream of the sixth laser welding assembly 10. The first laser welding assembly 05, the second laser welding assembly 06, the third laser welding assembly 07, the fourth laser welding assembly 08, and the fifth laser welding assembly 09 are arranged in parallel between the upper line body and the welding auxiliary line body. After welding by the first laser welding assembly 05, the second laser welding assembly 06, the third laser welding assembly 07, the fourth laser welding assembly 08, and the fifth laser welding assembly 09, the finished product is transported via the welding auxiliary line body to the upper line body downstream of the sixth laser welding assembly 10. The sixth laser welding assembly 10 is directly provided on the upper line body.

[0106] like Figure 7 As shown, the laser welding assembly includes a bottom plate lifting mechanism 51 , a vacuum adsorption plate lifting mechanism 52 , a pressing welding assembly 53 and a plastic plate welding positioning mechanism 54 .

[0107] The compression welding assembly is arranged directly above the laser welding station, and includes a pressing plate 531 , a transparent glass plate 532 , a laser welding gun 533 and a two-dimensional moving frame 534 for the welding gun.

[0108] The pressing plate is located directly above the laser welding station and has a fixed height. Two welding windows are arranged on the pressing plate along the transmission direction of the upper wire body. A transparent glass plate is installed in each welding window, so that the height position of the transparent glass plate remains unchanged.

[0109] The laser welding gun is located above the transparent glass plate and can move two-dimensionally according to the set welding path under the drive of the welding gun two-dimensional moving frame.

[0110] The welding gun two-dimensional moving frame can realize two-dimensional movement along the transmission direction of the upper wire body and perpendicular to the transmission direction of the upper wire body. The specific details are existing technologies and will not be described here.

[0111] The bottom plate lifting mechanism and the vacuum adsorption plate lifting mechanism are both arranged directly below the laser welding station. The bottom plate lifting mechanism can lift the tooling plate directly above it as a whole; the vacuum adsorption plate lifting mechanism can lift the vacuum adsorption plate directly above it.

[0112] The bottom plate lifting mechanism and the vacuum adsorption plate lifting mechanism of the present invention can both realize synchronous lifting of two adjacent sets of tooling plates and synchronous lifting of the vacuum adsorption plates.

[0113] The plastic plate welding positioning mechanism is arranged at the outer edge of the bottom of the pressure plate outside the laser welding station, and can position both the white plastic plate and the black plastic plate located at the laser welding station.

[0114] The plastic plate welding positioning mechanism includes a white plate welding positioning mechanism and a black plate welding positioning mechanism.

[0115] The white plate welding positioning mechanism includes a white plate transverse positioning mechanism and a white plate longitudinal positioning mechanism; wherein, the white plate transverse positioning mechanism is used for transverse positioning of the white plastic plate, and the white plate longitudinal positioning mechanism is used for longitudinal positioning of the white plastic plate.

[0116] like Figure 8 and Figure 9 As shown, the white board transverse positioning mechanism and the white board longitudinal positioning mechanism both include a white board positioning groove 134 , a white board positioning guide plate 541 , a white board positioning guide column 542 and a white board positioning side pushing device 543 .

[0117] The white plate positioning groove is arranged through the outer edge of the material limiting plate and is communicated with the white plate limiting groove.

[0118] The white board positioning guide plate is arranged outside the white board limiting slot, and a white board positioning guide column is arranged on the white board positioning guide plate facing the white board limiting slot, and the white board positioning guide column can cooperate with the white board limiting slot.

[0119] Furthermore, the white plate positioning guide column is tangent to the white plate positioning guide plate, and the height of the white plate positioning guide column is greater than the height of the white plate positioning guide plate, thereby also being able to guide the lifting of the tooling plate.

[0120] Furthermore, the bottom surface of the white plate positioning guide column is located below the bottom surface of the white plate positioning guide plate; the height of the white plate positioning guide plate is greater than the height of the material limiting plate.

[0121] The white board positioning side pushing device can be used to drive the white board positioning guide plate to slide horizontally or vertically.

[0122] The white board transverse positioning mechanism and the white board longitudinal positioning mechanism preferably have four each, corresponding to the two outer sides of the two wide sides and the two outer sides of the two long sides respectively.

[0123] As an alternative, the upstream wide edge of the white plate limiting groove on the tooling plate can be used as the reference edge, so that the two white plate lateral positioning mechanisms can be replaced. Figure 8 and Figure 9 shown.

[0124] The black plate welding positioning mechanism includes a black plate transverse positioning mechanism and a black plate longitudinal positioning mechanism; wherein, the black plate transverse positioning mechanism is used for transverse positioning of the black plastic plate, and the black plate longitudinal positioning mechanism is used for longitudinal positioning of the black plastic plate.

[0125] The black plate transverse positioning mechanism is preferably symmetrically arranged at the centers of the two wide sides of the black plastic plate, and the black plate longitudinal positioning mechanism is preferably symmetrically arranged at the centers of the two long sides of the black plastic plate.

[0126] The black plate transverse positioning mechanism and the black plate longitudinal positioning mechanism both include a black plate elastic positioning rod 135 , a black plate positioning guide plate 544 and a black plate positioning side pushing device 546 .

[0127] The black plate elastic positioning rod is embedded in the material limiting plate outside the black plate limiting groove in a horizontal or vertical direction. The outer end surface of the black plate elastic positioning rod protrudes from the material limiting plate, and the inner end surface of the black plate elastic positioning rod can contact the black plastic plate inside the black plate limiting groove. Furthermore, the outer protruding end of the black plate elastic positioning rod is preferably mounted with a limiting spring, so that when there is no driving force from the black plate positioning side pusher, the black plate elastic positioning rod is in an outwardly ejected state, causing the inner end surface of the black plate elastic positioning rod to be retracted in the material limiting plate outside the black plate limiting groove, without affecting the loading of the black plastic plate.

[0128] The black plate positioning guide plate can slide in the horizontal or vertical direction under the drive of the black plate positioning side pushing device, thereby driving the black plate elastic positioning rod to move toward the black plate limiting groove.

[0129] Furthermore, each black plate transverse positioning mechanism and each black plate longitudinal positioning mechanism has two black plate elastic positioning rods arranged in parallel; the outer end surfaces of the two black plate elastic positioning rods can contact the corresponding black plate positioning guide plates.

[0130] A black plate side push limit plate 545 is provided at the center of the black plate positioning guide plate facing the black plastic plate, and the black plate side push limit plate is located between the two black plate elastic positioning rods.

[0131] During welding, the specific steps include:

[0132] Step 1: Lift the tooling plate once: The base plate lifting mechanism lifts the tooling plate located on the laser welding station to a height close to that of the plastic plate welding positioning mechanism. During this lifting process, the white plate positioning guide pins in the plastic plate welding positioning mechanism guide the tooling plate.

[0133] Step 2: Secondary Lifting of the Tooling Plate: The baseplate lifting mechanism continues to lift the tooling plate until the white plastic plate is at the same height as the white plate positioning side thrusters in the plastic plate welding and positioning mechanism. During this lifting process, the white plate positioning guide pins and white plate positioning guide plates in the plastic plate welding and positioning mechanism provide guidance.

[0134] Step 3: White board positioning: All white board positioning side push devices are activated, so that the corresponding white board positioning guide plates slide toward the white plastic board and rest against the side of the white plastic board. At this time, the white board positioning guide pillars match the corresponding white board positioning grooves.

[0135] Step 4, black plate positioning: all black plate positioning side push devices are started, so that the corresponding black plate positioning guide plates slide toward the black plastic plate, thereby pushing the black plate elastic positioning rod to slide toward the black plastic plate and rest against the side of the black plastic plate.

[0136] Step 5. Lifting the vacuum adsorption plate: The vacuum adsorption plate lifting mechanism drives the floating lifting rod directly above to rise upward, thereby driving the vacuum adsorption plate, as well as the black plastic plate and the white plastic plate above to move upward synchronously until they are pressed against the bottom surface of the transparent glass plate. The pressing force at this time is calculated using the theoretical formula pressure = pressure x contact area.

[0137] Step 6: Laser Welding: The laser welding gun moves two-dimensionally around the welding window, laser welding the white and black plastic sheets beneath the transparent glass. The laser energy density at this point is calculated as follows: Energy Density = (Welding Power × Welding Speed) / Spot Diameter. The spot diameter is adjusted by adjusting the focal position. During welding, the laser energy is adjusted according to the specific welding situation.

[0138] The finished product unloading station is set downstream of the laser welding station. A finished product unloading robot 11 is set on one side of the finished product unloading station for unloading the finished plastic plate welding products on the finished product unloading station from the line body preferably by suction cup adsorption.

[0139] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the scope of protection of the present invention.

Claims

1. A plastic battery panel automatic laser welding production line, characterized by: Including wire body, black plate feed assembly, white plate feed assembly and laser welding assembly; The plastic battery panel includes a white plastic plate and a black plastic plate that are coaxially welded and both are rectangular; wherein the area of ​​the white plastic plate is larger than that of the black plastic plate; The line is equipped with black plate loading station, white plate loading station and laser welding station in sequence along the transmission direction; Several tooling plates are arranged in sequence along the transmission direction on the line; Each tooling plate includes a bottom plate, a material limiting plate and a vacuum adsorption plate; The material limiting plate is coaxially installed just above the bottom plate, with a black plate limiting groove provided at the center of the material limiting plate, in which the vacuum adsorption plate is embedded, and a floating lifting rod extending from the bottom surface of the bottom plate is provided at the bottom of the vacuum adsorption plate, and a number of vacuum adsorption holes are evenly distributed on the vacuum adsorption plate; when the floating lifting rod is not driven by external force, the top surface of the vacuum adsorption plate is lower than the top surface of the material limiting plate, and a black plastic plate can be placed in the black plate limiting groove on the top surface of the vacuum adsorption plate; The top surface of the material limiting plate is coaxially provided with a white plate limiting groove connected to the black plate limiting groove, which can be used to place a white plastic plate; the black plate loading assembly is arranged outside the black plate loading station, and can place the black plastic plate in the black plate limiting groove on the top surface of the vacuum adsorption plate of the tooling plate located at the black plate loading station; The white plate loading assembly is arranged outside the white plate loading station and can place the white plastic plate in the white plate limiting groove of the tooling plate located at the white plate loading station; The laser welding assembly is arranged at the laser welding station, including a bottom plate lifting mechanism, a vacuum adsorption plate lifting mechanism, a pressing welding assembly and a plastic plate welding positioning mechanism; The bottom plate lifting mechanism and the vacuum adsorption plate lifting mechanism are both set directly below the laser welding station. The bottom plate lifting mechanism can lift the tooling plate directly above it as a whole; the vacuum adsorption plate lifting mechanism can lift the vacuum adsorption plate directly above it. The plastic plate welding positioning mechanism is set outside the laser welding station, which can position both the white plastic plate and the black plastic plate at the laser welding station; The compression welding assembly is arranged directly above the laser welding station, including a transparent glass plate and a laser welding gun; the transparent glass plate is located directly above the laser welding station and its height position remains unchanged; the laser welding gun is located above the transparent glass plate and can move in two dimensions according to the set welding path.

2. The plastic battery panel automatic laser welding production line according to claim 1 is characterized by: The plastic plate welding positioning mechanism includes a white plate welding positioning mechanism and a black plate welding positioning mechanism; The white plate welding positioning mechanism includes a white plate transverse positioning mechanism and a white plate longitudinal positioning mechanism; wherein the white plate transverse positioning mechanism is used for transverse positioning of the white plastic plate, and the white plate longitudinal positioning mechanism is used for longitudinal positioning of the white plastic plate; The white board transverse positioning mechanism and the white board longitudinal positioning mechanism each include a white board positioning groove, a white board positioning guide plate, a white board positioning guide column and a white board positioning side pushing device; The white plate positioning groove is set through the outer edge of the material limiting plate and is connected to the white plate limiting groove; The white board positioning guide plate is arranged outside the white board limiting groove, and the white board positioning guide plate facing the white board limiting groove is provided with the white board positioning guide post, and the white board positioning guide post can cooperate with the white board limiting groove; The white board positioning side push device can be used to drive the white board positioning guide plate to slide horizontally or vertically; The black plate welding positioning mechanism includes a black plate transverse positioning mechanism and a black plate longitudinal positioning mechanism; wherein the black plate transverse positioning mechanism is used for transverse positioning of the black plastic plate, and the black plate longitudinal positioning mechanism is used for longitudinal positioning of the black plastic plate; The black plate transverse positioning mechanism and the black plate longitudinal positioning mechanism each include a black plate elastic positioning rod, a black plate positioning guide plate and a black plate positioning side pushing device; The black plate elastic positioning rod is embedded in the material limiting plate outside the black plate limiting groove in the horizontal or vertical direction. The outer end surface of the black plate elastic positioning rod protrudes from the material limiting plate, and the inner end surface of the black plate elastic positioning rod can contact the black plastic plate in the black plate limiting groove. The black plate positioning guide plate can slide in the horizontal or vertical direction under the drive of the black plate positioning side pushing device, thereby driving the black plate elastic positioning rod to move toward the black plate limiting groove.

3. The plastic battery panel automatic laser welding production line according to claim 2, characterized in that: The length directions of the white plastic plate and the black plastic plate are both along the transmission direction of the wire body; Each black plate transverse positioning mechanism and each black plate longitudinal positioning mechanism has two black plate elastic positioning rods arranged in parallel; the outer end surfaces of the two black plate elastic positioning rods can contact the corresponding black plate positioning guide plates.

4. The plastic battery panel automatic laser welding production line according to claim 3 is characterized by: A black plate side push limiting plate is provided at the center of the black plate positioning guide plate facing the black plastic plate, and the black plate side push limiting plate is located between the two black plate elastic positioning rods.

5. The plastic battery panel automatic laser welding production line according to claim 2, characterized in that: The white board positioning guide post is tangent to the white board positioning guide plate, and the height of the white board positioning guide post is greater than the height of the white board positioning guide plate.

6. The plastic battery panel automatic laser welding production line according to claim 5, characterized in that: The bottom surface of the white plate positioning guide column is located below the bottom surface of the white plate positioning guide plate; the height of the white plate positioning guide plate is greater than the height of the material limiting plate.

7. The plastic battery panel automatic laser welding production line according to claim 1, characterized in that: Both the black plate loading assembly and the white plate loading assembly include a feeding table, a material box, a material plate positioning table and a loading robot; The feeding table is set on the side of the black plate loading station or the white plate loading station for placing material boxes; Several white plastic sheets or black plastic sheets are stacked in the material box; The material plate positioning table is set between the feeding table and the line body, which can position the white plastic plate or the black plastic plate; Several suction cups are set at the bottom of the loading robot, and the loading robot can move between the feeding table, the material plate positioning table, and the black plate loading station or the white plate loading station.

8. The plastic battery panel automatic laser welding production line according to claim 7, characterized in that: The material plate positioning table is provided with a transverse reference edge, a longitudinal reference edge, a transverse push block and a longitudinal push block; the transverse reference edge and the longitudinal reference edge are arranged in an L shape, the transverse push block can slide toward the transverse reference edge; the longitudinal push block can slide toward the longitudinal reference edge.

9. The plastic battery panel automatic laser welding production line according to claim 1, characterized in that: The line is also equipped with a dust cleaning station and a finished product unloading station; The dust cleaning station is set upstream of the black plate feeding station to clean the dust in the tooling plate; The finished product unloading station is set downstream of the laser welding station. A finished product unloading robot is set on one side of the finished product unloading station to unload the finished plastic plate welding products from the line; There are multiple laser welding stations arranged in parallel, and each laser welding station can realize the welding of plastic battery panels on two adjacent tooling plates.

10. The plastic battery panel automatic laser welding production line according to claim 1, characterized in that: The line body is a closed-loop rotary line body, including an upper line body, a lower line body and two sets of tooling plate rotary assemblies; the black plate loading station, white plate loading station and laser welding station are all arranged along the transmission direction of the upper line body; the lower line body is arranged parallel to and directly below the upper line body; the two sets of tooling plate rotary assemblies are respectively arranged at both ends of the upper line body and the lower line body, which are used for lifting and transporting the tooling plates on the upper and lower line bodies.

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