Automatic laser welding production line for plastic cell panels

Abstract

The invention discloses an automatic laser welding production line for plastic cell panels. The automatic laser welding production line comprises a line body, a black plate feeding assembly, a white plate feeding assembly and a laser welding assembly. A plurality of tool plates are sequentially arranged on the line body in the conveying direction. Each tool plate comprises a bottom plate, a material limiting plate and a vacuum adsorption plate; the laser welding assembly is arranged on a laser welding station and comprises a bottom plate jacking mechanism, a vacuum adsorption plate jacking mechanism, a pressing welding assembly and a plastic plate welding positioning mechanism. The plastic plate welding positioning mechanism can position the white plastic plate and the black plastic plate which are positioned at the laser welding station; the pressing welding assembly comprises a transparent glass plate and a laser welding gun. The transparent glass plate is located over the laser welding station, and the height position of the transparent glass plate is kept unchanged. The laser welding gun is located above the transparent glass plate and can move in a two-dimensional mode according to a set welding path. The position of the welding part can be accurately guaranteed, and therefore the quality and welding efficiency of the finished welding part are improved.

Description

Technical Field

[0001] The 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] In the production of liquid flow batteries, bipolar plates are required, and the bipolar plates are welded to the flow field frame. Since both the bipolar plates and the flow field frame are rectangular plastic plates, the bipolar plates are black, also called black plastic plates; the flow field frame is white, also called white plastic plates. Among them, the area of ​​the white plastic plate is larger than that of the black plastic plate.

[0003] In the field of plastic welding, welding is a commonly used secondary processing method for plastics, which can be used to process and transform plastics into the desired shape. However, traditional plastic welding methods also have some disadvantages, such as low bonding efficiency, low connection strength and greater environmental impact; hot plate welding easily causes plastic parts to adhere to heating tools and cause air pollution; vibration welding and ultrasonic welding will cause residual vibration stress and thermal stress in the final product, accelerating the aging of the product. Laser welding can reduce the occurrence of such problems and greatly improve welding efficiency.

[0004] Laser welding technology refers to the technology of welding two products by high-temperature dissolution generated by laser. With the development of new material processing technology, plastic products have replaced traditional materials such as metals and ceramics in large quantities due to their light weight, corrosion resistance, good insulation and excellent molding and processing performance. They are widely used in aviation, ships, automobiles, energy storage batteries, medical equipment, food packaging and daily chemicals. The quality of plastic parts connection technology is of great significance to the wide application of plastic products. Plastic laser welding is an efficient and high-precision plastic connection technology that uses a laser beam to weld two or more plastic parts.

[0005] At present, the size specifications of white plastic plates and black plastic plates may be quite different, so during the welding process, it is particularly important to ensure the correct position of the welded parts, which can not only improve the quality of the finished welded parts but also improve the welding efficiency. The traditional welding device uses manual loading, which is easy to cause problems such as incomplete welding images and many loopholes, and there are also many 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 laser automatic 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 comprises a white plastic panel and a black plastic panel which 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 sequentially provided with a black plate loading station, a white plate loading station and a laser welding station along the transmission direction.

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

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

[0013] The material limiting plate is coaxially installed just above the bottom plate, and a black plate limiting groove is arranged 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 bottom plate is arranged at the bottom of the vacuum adsorption plate, and a plurality 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 which is connected with the black plate limiting groove and 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 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.

[0017] The laser welding assembly is arranged at the laser welding station, and comprises 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 as a whole; the vacuum adsorption plate lifting mechanism can lift the vacuum adsorption plate directly above.

[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 clamping 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 comprises 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, and the white board positioning guide column can cooperate with the white board limiting groove.

[0026] The white board positioning side push 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 along the horizontal or vertical direction, the outer end faces of the black plate elastic positioning rod extend out from the material limiting plate, and the inner end faces 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 push device, and then drive the black plate elastic positioning rod to move toward the direction of 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 limit plate is arranged 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.

[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 at 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] A plurality of suction cups are arranged 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 arranged upstream of the black plate feeding station and is used to clean the dust in the tooling plate.

[0044] The finished product unloading station is arranged downstream of the laser welding station, and a finished product unloading robot is arranged on one side of the finished product unloading station for unloading the finished plastic plate welding products from the line body.

[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, the white plate loading station and the laser welding station are all arranged along the transmission direction of the upper line body; the lower line body is arranged in parallel 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 the present invention completely replace manual welding, solve the problem of inaccurate positioning of welded parts in the traditional welding process, design a new positioning mechanism, which can be used for positioning plastic sheets of different sizes, and realize automation in the whole process from product loading, welding, workpiece circulation, etc., solve the problem of unstable product welding quality, and improve the operation efficiency of the production line;

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

[0050] 3. A welding method is provided, in which a welding strip is arranged on the welding surface of a first plastic part, and a welding groove is opened on the welding surface of a second plastic part; during the welding process, a lifting platform first lifts the tooling plate and the material to a suitable position, and a cylindrical pressure plate is driven by a cylinder to fix the first plastic battery plate, and then the pressure plate is driven by a cylinder to press the side columns around the tooling plate to position the second plastic battery plate. 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 to perform 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 of the structure of a plastic battery panel automatic laser welding production line of the present invention is shown.

[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 The schematic diagram of the structure of the tooling plate rotating assembly in the present invention is shown.

[0056] Figure 5 The schematic diagram of the structure of the black plate feed assembly in the present invention is shown.

[0057] Figure 6 The schematic diagram of the structure of the material plate positioning platform in the present invention is shown.

[0058] Figure 7 A schematic diagram of the structure of the laser welding assembly in the present invention is shown.

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

[0060] Fig. 9 A top view of the plastic plate welding positioning mechanism of the present invention is shown.

[0061] Fig.10 The schematic diagram of the structure of the plastic battery panel in the present invention is shown.

[0062] Among them are:

[0063] 01. Tooling plate rotating assembly; 101. Rotating frame; 102. Upper station; 103. Lower station; 104. Lifting back plate; 105. Back plate lifting drive mechanism; 106. Tooling plate conveying mechanism; 107. Conveying rail; 108. Conveying motor; 109. Conveying shaft;

[0064] 02. Tray vacuum assembly;

[0065] 03. Black plate material 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 material assembly;

[0067] 05. The first laser welding assembly;

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

[0069] 53. Pressing 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. Line body;

[0074] 13. Tooling plate; 131. Bottom plate; 132. Material limiting plate; 132a. White plate limiting groove; 132b. Black plate limiting groove; 132c. Floating lifting rod; 132d. Vacuum adsorption plate limiting spring; 133. Vacuum adsorption plate; 134. White plate positioning groove; 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 in conjunction with 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 part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0078] like Fig.10 As shown, the plastic battery plate includes a white plastic plate 141 and a black plastic plate 142 which are coaxially welded and both are rectangular; wherein the area of ​​the white plastic plate is larger than that of the black plastic plate. In this embodiment, the white plastic plate is a flow field frame with a central cavity, and the black plastic plate is a bipolar plate of a flow battery, and the four sides of the bipolar plate need to be welded to the four sides of the central cavity of the flow field frame.

[0079] like Figure 1 As shown, a plastic battery panel laser automatic welding production line preferably includes a line body 12, a tray dust suction 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] A plurality of tooling plates are arranged in sequence on the upper and lower wire bodies along the transmission direction. The length directions of the white plastic plates and the black plastic plates on the tooling plates are preferably along the transmission direction of the wire 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 at 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 out from the bottom surface of the bottom plate is provided at the bottom of the vacuum adsorption plate, and a plurality of vacuum adsorption holes are evenly distributed on the vacuum adsorption plate.

[0084] A vacuum adsorption plate limiting spring 132d is mounted on the floating lifting rod located below the bottom plate, 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 with the black plate limiting groove and can hold a white plastic plate.

[0086] Two sets of tooling plate rotating 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, wherein the upper station is at the same height as the upper wire body, and the lower station is at the same height as the lower wire body.

[0089] The tooling plate conveying mechanism is installed on the rotary frame through the lifting back plate, and can be driven by the back plate lifting drive mechanism to reciprocate and lift between the upper station and the lower station. In addition, the tooling plate conveying mechanism itself has a conveying rail 107 in the same direction as the line body, and a number of conveying shafts 109 are arranged equidistantly in the middle of the conveying rail along the transmission direction. All conveying shafts can realize synchronous rotation under the drive of the conveying motor 108, so as to convey the tooling plate located thereon. The cooperation of the conveying motor and the back plate lifting drive mechanism can realize the lifting and transportation of the tooling plate between the upper line body and the lower line body.

[0090] The upper line body is sequentially 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 along the transmission direction.

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

[0092] When the tooling board reaches the dust cleaning station, it stops. The tray vacuum assembly generates a strong negative pressure suction force 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 confined space. The negative pressure suction force draws the air, dust and debris in the space into the equipment through the suction nozzle. After the tooling board is vacuumed, 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 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.

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

[0096] The feeding table is arranged at 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 plates or black plastic plates 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 arranged 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 feeding robot includes a two-dimensional moving frame, the bottom of which can be equipped with the above-mentioned suction cup. The two-dimensional moving frame can slide in a direction perpendicular to the wire body under the drive of the longitudinal servo motor 301; the two-dimensional moving frame can also slide along 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, 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 transverse push block and the longitudinal push block slide outward. When the loading robot places the white plastic plate or the black plastic plate on the material plate positioning table, the transverse push block and the longitudinal push block slide inward until the two adjacent side edges of the white plastic plate or the black plastic plate respectively abut against the transverse reference edge and the longitudinal 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 the 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 the laser welding station. Furthermore, the laser welding stations preferably have a plurality of laser welding stations arranged in parallel. In this embodiment, preferably six laser welding stations are arranged in parallel. Each laser welding station preferably can realize the welding of plastic battery panels on two adjacent tooling plates. Therefore, the laser welding assembly also has six sets, namely, the first laser welding assembly 05, the second laser welding assembly 06, the third laser welding assembly 07, the fourth laser welding assembly 08, the fifth laser welding assembly 09 and the sixth laser welding assembly 10 arranged in sequence along the transmission direction of the line body.

[0105] Further, if Figure 1 As shown, a welding auxiliary line body is also provided on the upper line body, and the downstream side of the welding auxiliary line body 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, the finished products of 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 transported to the upper line body downstream of the sixth laser welding assembly 10 through the welding auxiliary line body. The sixth laser welding assembly 10 is directly arranged 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 clamping 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 welding gun two-dimensional moving frame 534 .

[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 a 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 prior art and will not be described in detail 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 as a whole; the vacuum adsorption plate lifting mechanism can lift the vacuum adsorption plate directly above.

[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 groups of tooling plates and synchronous lifting of the vacuum adsorption plate.

[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 comprises 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 Fig. 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 groove, and a white board positioning guide column is arranged on the white board positioning guide plate facing the white board limiting groove, and the white board positioning guide column can cooperate with the white board limiting groove.

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

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

[0121] The white board positioning side push 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, as shown in the following example. Figure 8 and Fig. 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 center of the two wide sides of the black plastic plate, and the black plate longitudinal positioning mechanism is preferably symmetrically arranged at the center 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 the horizontal or vertical direction, and 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. Further, the outer protruding end of the black plate elastic positioning rod is preferably sleeved with a limiting spring, so that the black plate elastic positioning rod is in an outward pop-up state when there is no driving force from the black plate positioning side push device, so that the inner end surface of the black plate elastic positioning rod is contracted in the material limiting plate outside the black plate limiting groove, and does not affect the feeding 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 push device, and then drive the black plate elastic positioning rod to move toward the direction of the black plate limiting groove.

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

[0130] A black plate side push limit plate 545 is arranged 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] When welding, the specific steps include the following.

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

[0133] Step 2, secondary lifting of the tooling plate: The bottom plate lifting mechanism continues to lift the tooling plate, so that the white plastic plate is at the same height as the white plate positioning side thrust device in the plastic plate welding positioning mechanism. During the lifting process, the white plate positioning guide pillar and the white plate positioning guide plate in the plastic plate welding positioning mechanism both guide the lifting.

[0134] Step 3, white board positioning: All white board positioning side push devices are started, 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 column cooperates with the corresponding white board positioning groove.

[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 abut against the side of the black plastic plate.

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

[0137] Step 6, laser welding: The laser welding gun moves two-dimensionally around the welding window to laser weld the white plastic plate and the black plastic plate under the transparent glass plate. The laser energy density at this time is: energy density = (welding power × welding speed) / spot diameter. The spot diameter is adjusted by adjusting the focus position. During welding, the laser energy is adjusted according to the specific welding situation.

[0138] The finished product unloading station is arranged downstream of the laser welding station, and a finished product unloading robot 11 is arranged 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 wire 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 belong to the protection scope of the present invention.

Claims

1. A plastic battery panel laser automatic 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 panel and a black plastic panel which are coaxially welded and both are rectangular; wherein the area of ​​the white plastic panel is larger than that of the black plastic panel; 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, a black plate limiting groove is arranged at the center of the material limiting plate, the vacuum adsorption plate is embedded in the black plate limiting groove, a floating lifting rod extending out of the bottom surface of the bottom plate is arranged at the bottom of the vacuum adsorption plate, and a plurality 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; The top surface of the material limiting plate is coaxially provided with a white plate limiting groove connected with the black plate limiting groove, which can hold a white plastic plate; the black plate loading assembly is arranged outside the black plate loading station, and can hold 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 arranged directly below the laser welding station. The bottom plate lifting mechanism can lift the tooling plate directly above as a whole; the vacuum adsorption plate lifting mechanism can lift the vacuum adsorption plate directly above. 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; The clamping 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 both 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 arranged through the outer edge of the material limiting plate and is connected with 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 column, and the white board positioning guide column 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 both 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 push device, and then drive the black plate elastic positioning rod to move toward the direction of the black plate limiting groove.

3. The plastic battery panel automatic laser welding production line according to claim 2 is characterized by: The length directions of the white plastic plate and the black plastic plate are 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 limit plate is arranged 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.

5. The plastic battery panel automatic laser welding production line according to claim 2 is characterized by: 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 is characterized by: 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 is characterized by: The black plate loading assembly and the white plate loading assembly both include a feeding table, a material box, a material plate positioning table and a loading robot; The feeding table is set on one side of the black plate loading station or the white plate loading station and is used to place the material box; 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; A plurality of suction cups are arranged 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 is characterized by: 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 is characterized by: The line is also equipped with dust cleaning stations and finished product unloading stations; 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 arranged downstream of the laser welding station, and a finished product unloading manipulator is arranged on one side of the finished product unloading station to unload and load the finished plastic plate welding products on the finished product unloading station from the line body; 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 is characterized by: 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, the white plate loading station and the laser welding station are all arranged along the transmission direction of the upper line body; the lower line body is arranged in parallel 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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