Laser processing production line and control method thereof

Abstract

The invention discloses a laser processing production line and a control method thereof. The laser processing production line comprises a processing platform, and the surface of the processing platform is provided with a feeding and discharging station, a deviation rectifying station, a processing station and a waste absorbing station which are sequentially and uniformly arranged at intervals; the workpiece fixing unit comprises a first rotating disc and four vacuum jigs arranged on the first rotating disc, and the four vacuum jigs correspond to the positions of the four stations respectively; the laser processing unit is arranged above the processing station; the transfer unit is arranged beside the feeding and discharging station; the feeding conveying belt and the discharging conveying belt are used for conveying workpieces. Through cooperation of the first rotating disc and the second rotating disc, continuous feeding and discharging and continuous laser machining can be achieved, and the machining efficiency is remarkably improved; through annular distribution of the stations and optimized layout of all the assemblies, the occupied area of the equipment is remarkably reduced; the waste of raw materials and time caused by machining of the workpiece with the offset position is avoided, the machining efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] The present application belongs to the field of laser processing technology, and specifically relates to a laser processing production line and a control method thereof. Background Art

[0002] Silicon wafer laser edge cleaning is a method of cleaning the edges of silicon wafers using laser technology, which is widely used in semiconductor manufacturing, solar cell manufacturing and other fields. The traditional silicon wafer laser edge cleaning production line includes a processing table and a loading conveyor belt and a unloading conveyor belt located at both ends of the processing table. The silicon wafer is transferred to the processing table by the loading conveyor belt for laser processing, and after the processing is completed, it is transferred to the unloading station by the unloading conveyor belt.

[0003] On the one hand, the traditional production line layout leads to a large occupied area of ​​the equipment. On the other hand, the transfer of workpieces between the conveyor belt and the processing table takes a long time. The processing station is occupied during the transfer of the workpiece, and continuous processing of the processing station cannot be achieved, which affects the processing efficiency. Summary of the invention

[0004] The purpose of the present application is to provide a laser processing production line and a control method thereof, so as to solve the technical problems existing in the prior art that the silicon wafer laser edge cleaning production line occupies a large area, cannot realize continuous processing, and has low processing efficiency.

[0005] In order to achieve the above-mentioned object, the first aspect of the present application provides a laser processing production line, comprising:

[0006] The processing platform has loading and unloading stations, deviation correction stations, processing stations, and waste suction stations evenly spaced in sequence on its surface, and the loading and unloading stations, deviation correction stations, processing stations, and waste suction stations are distributed in a ring shape;

[0007] A workpiece fixing unit is arranged on the processing platform, the workpiece fixing unit includes a rotatable first turntable and four vacuum fixtures evenly spaced along the circumference of the first turntable, the four vacuum fixtures respectively corresponding to the positions of the loading and unloading stations, the deviation correction station, the processing station, and the waste suction station, each of the vacuum fixtures includes a first vacuum adsorption surface for adsorbing and fixing the workpiece;

[0008] A laser processing unit is arranged above the processing station;

[0009] A transfer unit is arranged next to the loading and unloading station;

[0010] Loading conveyor belt and unloading conveyor belt are used to transfer workpieces;

[0011] The transfer unit is used to transfer the unprocessed workpiece from the loading conveyor to the vacuum metallurgy located at the loading and unloading station, and to transfer the processed workpiece from the vacuum metallurgy located at the loading and unloading station to the unloading conveyor.

[0012] In one or more embodiments, the workpiece fixing unit further includes:

[0013] A first rotation driving mechanism, used for driving the first rotating disk to rotate;

[0014] A rotary joint is arranged on the first rotary disk and extends along the axial direction of the first rotary disk, the rotary joint comprises a first section connected to the first rotary disk and a second section rotatable relative to the first section, and a vacuum channel connected to the vacuum metallurgical tool is formed inside the rotary joint;

[0015] A vacuum generating mechanism is arranged in the second section of the rotary joint, and a working end of the vacuum generating mechanism is connected to the vacuum channel;

[0016] The vacuum fixture is provided with a first vacuum joint at one end close to the rotary joint, the first section is provided with a second vacuum joint connected to the first vacuum joint on a side facing the vacuum fixture, and the second vacuum joint is connected to the vacuum channel.

[0017] In one or more embodiments, the first turntable includes four support arms arranged along the circumferential direction, the support arms are arranged to extend radially along the first turntable, and the support arms correspond to the vacuum molds one by one, and the vacuum molds are arranged on the corresponding support arms; and / or,

[0018] The first turntable is provided with a recessed portion matching the vacuum fixture, and the vacuum fixture is embedded in the recessed portion and fixed.

[0019] In one or more embodiments, the vacuum metallurgy is a U-shaped structure, and the U-shaped opening is extended outward along the radial direction of the first turntable, and a first hollow portion corresponding to the position of the U-shaped opening is arranged on the first turntable.

[0020] In one or more embodiments, the transport unit comprises:

[0021] The rotary transport mechanism comprises a second turntable, a second rotary drive mechanism for driving the second turntable to rotate, and a plurality of vacuum transport forks, wherein the plurality of vacuum transport forks are arranged on the second turntable at intervals along the circumference of the second turntable, and the vacuum transport forks comprise a second vacuum adsorption surface for adsorbing and fixing the workpiece;

[0022] A lifting drive mechanism, used for driving the rotating transport mechanism to lift and lower;

[0023] The width of the vacuum transport fork is smaller than the width of the first hollow portion, the loading conveyor belt and the unloading conveyor belt both include a pair of belts arranged in parallel and at intervals, and the width of the vacuum transport fork is smaller than the interval between the pair of belts.

[0024] In one or more embodiments, the loading conveyor belt and the unloading conveyor belt are respectively arranged at both sides of the transfer unit and are arranged at an angle of 180°. The loading conveyor belt and the unloading conveyor belt are respectively arranged at an angle of 90° to the vacuum metallurgy located at the loading and unloading stations, and the second turntable is provided with two vacuum transfer forks distributed at 90°.

[0025] In one or more embodiments, the lifting drive mechanism includes:

[0026] Base plate;

[0027] An X-axis guide rail is arranged on the bottom plate;

[0028] A conversion slider, slidably arranged on the X-axis guide rail;

[0029] An inclined guide rail is arranged on the conversion slider, and the inclined guide rail extends in a direction inclined relative to the X-axis direction;

[0030] A driving slider slidably arranged on the inclined guide rail;

[0031] A lifting frame, arranged above the conversion slider and fixed to the driving slider, the top surface of the lifting frame is provided with a first supporting surface for carrying the rotating transport mechanism;

[0032] A driving element, used for driving the conversion slider to slide along the X-axis guide rail;

[0033] A support seat, arranged on the bottom plate;

[0034] The Z-axis guide rail is arranged on the support seat, and the lifting frame is slidably arranged on the Z-axis guide rail.

[0035] In one or more embodiments, a second supporting surface is arranged on the top surface of the supporting seat, and a second hollow portion for avoiding the second supporting surface is provided on the first supporting surface;

[0036] The first supporting surface is provided with an opening for the second rotary drive mechanism to pass through, and an installation space for installing the second rotary drive mechanism is formed between the first supporting surface and the conversion slider; the top surface of the conversion slider is an inclined surface extending in the same direction as the inclined guide rail, and the top surface of the conversion slider is provided with an avoidance groove for avoiding the second rotary drive mechanism.

[0037] In one or more embodiments, it further includes:

[0038] A position detection unit is arranged above the deflection correction station, and is used to detect the position of the workpiece located at the deflection correction station and determine whether the position of the workpiece is offset;

[0039] A waste sheet storage unit is arranged on the processing platform, and the waste sheet storage unit is used to store workpieces with offset positions;

[0040] The waste film transfer unit is arranged between the waste suction station and the waste film storage unit. The waste film transfer device is used to transfer the workpiece with a position offset from the waste suction station to the waste film storage unit.

[0041] In one or more embodiments, the position detection unit includes four cameras distributed at four corners, the shooting ends of the cameras are directed toward the deviation correction station, and each of the cameras is used to capture an image of a corner of the workpiece.

[0042] In one or more embodiments, it further includes:

[0043] A column arranged on the processing platform;

[0044] A top plate, arranged on the top of the column, and a third hollow portion corresponding to the position of the deviation correction station is arranged on the top plate;

[0045] A pair of back plates are arranged opposite to each other, one end of the back plates is fixed to the side wall of the third hollow portion, and the other end of the back plates is extended toward the direction of the deviation correction station;

[0046] Wherein, the position detection unit is arranged on the back plate;

[0047] The waste film transfer unit comprises:

[0048] A displacement drive mechanism is arranged on the column, the displacement drive mechanism comprises a first end located above the waste film storage unit and a second end located above the waste suction station, and the displacement drive mechanism comprises a movable end capable of switching positions between the first end and the second end;

[0049] A cantilever, arranged at the moving end;

[0050] A vacuum suction cup is arranged on the side of the cantilever facing the processing platform, and the vacuum suction cup is used to absorb and fix the workpiece.

[0051] In one or more embodiments, a backlight unit is further included, wherein the backlight unit includes:

[0052] A surface light source is arranged below the position detection unit, and the surface light source is used to provide backlight when the workpiece is subjected to position detection;

[0053] A bracket, arranged on the processing platform, the bracket comprising a supporting plate for supporting the surface light source;

[0054] A blowing plate is arranged at one end of the support plate, the blowing plate is arranged at the blowing port on one side facing the surface light source, and a blowing channel connected to the blowing port is formed inside the blowing plate;

[0055] Wherein, the support plate is arranged at an angle, and the support plate comprises a high end and a low end which are arranged opposite to each other, and the blowing plate is arranged at the high end.

[0056] In one or more embodiments, a dust collecting unit and a tidying unit are further included, wherein the dust collecting unit includes:

[0057] A dust collecting base, arranged on the processing platform;

[0058] A dust collecting hood is installed on the dust collecting base, the dust collecting hood is located above the processing station, the bottom surface of the dust collecting hood is arranged with a first opening for exposing the workpiece, the top surface is arranged with a second opening for avoiding the laser, and the side surface is arranged with a dust collecting port;

[0059] A dust collecting pipe has one end connected to the dust collecting port.

[0060] In order to achieve the above-mentioned purpose, the second aspect of the present application provides a control method of the laser processing production line described in any of the above-mentioned embodiments, wherein the laser processing production line further includes a position detection unit, which is arranged above the deviation correction station, and the position detection unit is used to detect the position of the workpiece located at the deviation correction station and determine whether the workpiece position is offset;

[0061] The control method comprises:

[0062] Controlling the loading conveyor belt to sequentially transfer the workpieces to the transfer unit;

[0063] Controlling the transfer unit to transfer workpiece No. n to the vacuum tool located at the loading and unloading station;

[0064] Control the first turntable to rotate, transfer workpiece No. n to the deviation correction station, and control the transfer unit to transfer workpiece No. n+1 to the vacuum metallurgy located at the loading and unloading station;

[0065] Controlling the position detection unit to detect the position of workpiece No. n, and determining whether the position of workpiece No. n is offset;

[0066] Control the first turntable to rotate, transfer workpiece No. n to the processing station, and control the transfer unit to transfer workpiece No. n+2 to the vacuum metallurgy located at the loading and unloading station;

[0067] If there is no offset in the position of workpiece No. n, controlling the laser processing unit to process workpiece No. n;

[0068] Control the first turntable to rotate, transfer workpiece No. n to the waste suction station, and control the transfer unit to transfer workpiece No. n+3 to the vacuum metallurgy located at the loading and unloading station;

[0069] Control the first turntable to rotate, transfer workpiece No. n to the loading and unloading station, control the transfer unit to transfer workpiece No. n to the unloading conveyor belt and transfer workpiece No. n+4 to the vacuum metallurgy located at the loading and unloading station.

[0070] In one or more embodiments, the laser processing production line further includes a waste film storage unit and a waste film transfer unit, wherein the waste film storage unit is arranged on the processing platform and is used to store workpieces with offset positions; the waste film transfer unit is arranged between the waste suction station and the waste film storage unit, and the waste film transfer device is used to transfer the workpieces with offset positions from the waste suction station to the waste film storage unit;

[0071] If the position of workpiece n is offset, the control method further includes:

[0072] When workpiece No. n is transferred to the processing station, the laser processing unit is controlled not to work;

[0073] When workpiece No. n is transferred to the waste suction station, the waste sheet transfer unit is controlled to transfer workpiece No. n from the waste suction station to the waste sheet storage unit for collection.

[0074] In one or more embodiments, the transfer unit includes a rotary transport mechanism and a lifting drive mechanism for driving the rotary transport mechanism to lift and lower, the rotary transport mechanism includes a second turntable, a second rotary drive mechanism for driving the second turntable to rotate, and two vacuum transport forks, the two vacuum transport forks are arranged on the second turntable at intervals along the circumference of the second turntable and are distributed at 90°, and the loading conveyor belt and the unloading conveyor belt are respectively arranged on both sides of the transfer unit and are arranged at an angle of 180°;

[0075] The steps of controlling the transfer unit to transfer workpiece No. n to the unloading conveyor belt and to transfer workpiece No. n+4 to the vacuum metallurgical tool located at the unloading and loading station are specifically as follows:

[0076] Control the second turntable to descend to the lowest position and rotate it to the position so that the two vacuum transfer forks are located at the end of the loading conveyor belt and the loading and unloading stations respectively;

[0077] The second turntable is controlled to rise to the highest position, and workpiece No. n and workpiece No. n+4 are respectively lifted and supported by two vacuum transfer forks;

[0078] Control the second turntable to rotate 90 degrees so that the two vacuum transfer forks are respectively located at the loading and unloading station and the starting end of the unloading conveyor belt;

[0079] The second turntable is controlled to descend to the lowest position, and workpiece No. n and workpiece n+4 are respectively lifted and supported by the unloading conveyor belt and the vacuum mold located at the unloading and loading stations.

[0080] Different from the prior art, the beneficial effects of this application are:

[0081] The present application can realize continuous loading and unloading and continuous laser processing through the cooperation of the first turntable and the second turntable, which significantly improves the processing efficiency;

[0082] This application significantly reduces the equipment footprint through the circular distribution of workstations and the optimized layout of each component;

[0083] The present application avoids the waste of raw materials and time caused by machining of workpieces with positional displacement, thereby improving machining efficiency and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0085] Figure 1 This is a structural schematic diagram of an implementation method of the laser processing production line of the present application;

[0086] Figure 2 This is a structural schematic diagram from another perspective of an implementation method of the laser processing production line of the present application;

[0087] Figure 3 It is a structural schematic diagram of an implementation scheme of a workpiece fixing unit of the present application;

[0088] Figure 4 yes Figure 3 A is a partial enlarged schematic diagram;

[0089] Figure 5 It is a structural schematic diagram of an embodiment of the first turntable of the present application;

[0090] Figure 6 It is a structural schematic diagram of an embodiment of a loading conveyor belt, a transfer unit and a unloading conveyor belt of the present application;

[0091] Figure 7 It is a structural schematic diagram of an implementation method of the lifting drive mechanism of the present application;

[0092] Figure 8 It is a cross-sectional structural schematic diagram of an implementation mode of the lifting drive mechanism of the present application;

[0093] Fig. 9 It is a structural schematic diagram of an implementation mode of the lifting drive mechanism of the present application without the lifting frame;

[0094] Fig.10 It is a structural schematic diagram of an embodiment of the installation structure of the position detection unit, the waste film storage unit and the waste film transfer unit of the present application;

[0095] Fig.11 This is a schematic structural diagram of an implementation method of a waste film transfer unit of the present application;

[0096] Fig.12 is a schematic structural diagram of an embodiment of a backlight unit of the present application;

[0097] Fig.13 It is a structural schematic diagram of an embodiment of a dust collection unit of the present application;

[0098] Fig.14 It is a flow chart of an implementation method of a control method of a laser processing production line of the present application. DETAILED DESCRIPTION

[0099] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0100] In order to improve processing efficiency and realize continuous production, the applicant has developed a new type of laser processing production line, which can realize the continuity of laser operation through a double rotating structure, while reducing the occupied area and cost of the equipment.

[0101] Specifically, see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an implementation method of the laser processing production line of the present application. Figure 2 This is a structural schematic diagram from another perspective of an implementation method of the laser processing production line of the present application.

[0102] like Figure 1 and Figure 2 As shown, the laser production line includes a processing platform 10, on which are arranged loading and unloading stations 101, a deviation correction station 102, a processing station 103, and a waste suction station 104 which are evenly spaced in sequence. The loading and unloading stations 101, the deviation correction station 102, the processing station 103, and the waste suction station 104 are distributed in a ring shape.

[0103] A workpiece fixing unit 20 is arranged at the center of the processing platform 10. The workpiece fixing unit 20 includes a rotatable first turntable 201 and four vacuum jigs 202 evenly arranged on the first turntable 201 along the circumference of the first turntable 201. The four vacuum jigs 202 correspond to the four workstations, and each vacuum jig 202 is used to adsorb and fix a workpiece.

[0104] It can be understood that, as the first turntable 201 rotates, each workpiece can pass through the loading and unloading station 101, the deviation correction station 102, the processing station 103, the waste suction station 104 and the loading and unloading station 101 in sequence.

[0105] A laser processing unit 30 is arranged above the processing station 103 , and the laser processing unit 30 is used to perform laser processing on the workpiece when the workpiece arrives at the processing station 103 .

[0106] A transfer unit 40 is arranged beside the loading and unloading station 101, and a loading conveyor belt 50 and a unloading conveyor belt 60 for transferring workpieces are also arranged beside the transfer unit 40. The transfer unit 40 is used to transfer the unprocessed workpiece from the loading conveyor belt 50 to the vacuum mold 202 located at the loading and unloading station 101, and to transfer the processed workpiece from the vacuum mold 202 located at the loading and unloading station 101 to the unloading conveyor belt 60.

[0107] Based on the cooperation of the transfer unit 40, the workpiece fixing unit 20, the loading conveyor belt 50 and the unloading conveyor belt 60, continuous processing of the workpiece can be achieved. The workpieces on the four vacuum molds 202 can arrive at the processing station 103 one by one in sequence for processing. At the loading and unloading station 101, the unprocessed workpiece can be transferred to the vacuum mold 202, and the processed workpiece can be transferred to the unloading conveyor belt 60.

[0108] The structure of the workpiece fixing unit 20 in this application is described in detail below. Figure 3 , Figure 3 It is a structural schematic diagram of an implementation scheme of a workpiece fixing unit of the present application.

[0109] like Figure 3As shown, each vacuum mold 202 is provided with a first vacuum adsorption surface 2022 for adsorbing and fixing the workpiece on a side facing away from the first turntable 201 .

[0110] The workpiece fixing unit further includes a first rotation driving mechanism 205 for driving the first rotating disk 201 to rotate.

[0111] Furthermore, during the rotation process, the workpiece located on the first vacuum adsorption surface 2022 of the vacuum fixture 202 is subjected to a large centrifugal force. During the rotation of the first turntable 201, it is very important to ensure the vacuum degree inside the vacuum fixture 202 for the fixing stability of the workpiece.

[0112] In this embodiment, in order to solve the vacuum degree problem during the rotation of the vacuum metallurgy 202 , a rotary joint 203 is arranged at the rotation center of the bearing surface of the first turntable 201 .

[0113] See also Figure 3 and Figure 4 , Figure 4 yes Figure 3 A partial enlarged schematic diagram of the middle A. The rotary joint 203 is arranged on the first turntable 201 along the axial direction of the first turntable 201, and the rotary joint 203 includes a first section 2031 connected to the first turntable 201 and a second section 2032 that can rotate relative to the first section 2031. A vacuum channel (not shown in the figure) connected to the vacuum metallurgical tool 202 is formed inside the rotary joint 203.

[0114] A vacuum generating mechanism 204 is also arranged on the second section 2032 of the rotary joint 203 , and a working end of the vacuum generating mechanism 204 is connected to the vacuum channel.

[0115] Based on the above design, the first section 2031 of the rotary joint 203 can rotate with the first turntable 201, while the second section 2032 remains relatively stationary. During the rotation of the first turntable 201, the vacuum generating mechanism 204 ensures the vacuum degree inside the vacuum metallurgy 202 through the vacuum channel in real time, thereby ensuring the fixing stability of the workpiece.

[0116] Specifically, in this embodiment, a first vacuum joint 2023 is arranged at one end of the vacuum mold 202 close to the rotary joint 203, and a second vacuum joint 2033 connected to the first vacuum joint 2023 is arranged on the side of the first section 2031 facing the vacuum mold 202, and the second vacuum joint 2033 is connected to the vacuum channel.

[0117] In this embodiment, the vacuum generating mechanism 204 includes a sleeve 2041 with one end sleeved on the second section 2032, the interior of the sleeve 2041 is connected to the vacuum channel; a gas cabinet 2042 is fixed to the other end of the sleeve 2041, the interior of the gas cabinet 2042 is connected to the interior of the sleeve 2041, and a plurality of vacuum generators 2043 are arranged inside the gas cabinet 2042. The vacuum generator 2043 first generates a vacuum inside the gas cabinet 2042, and then forms a vacuum inside the vacuum metallurgy 202 through the interior of the sleeve 2041 and the vacuum channel.

[0118] Of course, in other embodiments, other commonly used vacuum generating mechanisms 204 structures in the art may also be used, and the vacuum degree inside the vacuum metallurgy 202 can be controlled by the rotary joint 203, and the effect of this embodiment can be achieved.

[0119] In order to further improve the fixing stability and positioning accuracy of the vacuum fixture 202, please refer to Figure 3 and Figure 5 , Figure 5 It is a structural schematic diagram of an embodiment of the first turntable of the present application.

[0120] like Figure 3 and Figure 5 As shown, a recessed portion 2011 matching the vacuum jig 202 is also arranged on the first turntable 201 , and the vacuum jig 202 is embedded in the recessed portion 2011 and fixed.

[0121] In order to facilitate the robot to transfer the workpiece between the vacuum metallization tool 202 and the conveyor belt, the vacuum metallization tool 202 in this embodiment is a U-shaped structure, and the U-shaped opening 2021 is arranged along the radial extension of the first turntable 201 to point away from the side of the rotary joint 203, and a first hollow portion 2012 corresponding to the position of the U-shaped opening 2021 is arranged on the first turntable 201, so that the robot can directly reach into the U-shaped opening 2021 to clamp or place the workpiece.

[0122] Further, in order to optimize the design, in this embodiment, the first turntable 201 includes a plurality of support arms 2013 arranged along the circumferential direction, the support arms 2013 are arranged along the radial extension of the first turntable 201, and the support arms 2013 correspond to the vacuum metallurgy 202 one by one, and the vacuum metallurgy 202 is arranged on the corresponding support arms 2013. In other embodiments, the first turntable 201 may also adopt other structural forms, which can realize the installation of the vacuum metallurgy 202 and avoid interference with other components when the turntable rotates, and can achieve the effect of this embodiment.

[0123] Based on the workpiece fixing unit of the above-mentioned embodiments, the time for the first turntable 201 to rotate 90° can be controlled at about 150 milliseconds, which can realize high-speed loading and unloading of the processing station. The laser processing time is generally about 2s, and the laser processing time can be adjusted by replacing laser devices with different efficiencies. Therefore, continuous processing of the processing station can be realized, and the next workpiece can be delivered to the place about 150 milliseconds after the processing of the previous workpiece is completed.

[0124] The structure of the transfer unit 40 in this application is described in detail below. Figure 6 , Figure 6 It is a structural schematic diagram of an embodiment of a loading conveyor belt, a transfer unit and a unloading conveyor belt of the present application.

[0125] like Figure 6 As shown, the transfer unit 40 includes a rotating conveying mechanism 401 and a lifting drive mechanism 402, the rotating conveying mechanism 401 includes a second turntable 4011, a second rotating drive mechanism 4012 for driving the second turntable 4011 to rotate, and two vacuum conveying forks 4013, the two vacuum conveying forks 4013 are arranged on the second turntable 4011 at intervals along the circumference of the second turntable 4011, and the vacuum conveying fork 4013 includes a second vacuum adsorption surface 40131 for adsorbing and fixing the workpiece.

[0126] The loading conveyor belt 50 and the unloading conveyor belt 60 are respectively arranged at both sides of the transfer unit 40 and are arranged at an angle of 180°. At the same time, the loading conveyor belt 50 and the unloading conveyor belt 60 are respectively arranged at an angle of 90° to the vacuum mold 202 located at the loading and unloading station 101; two vacuum transfer forks 4013 distributed at 90° are arranged on the second turntable 4011.

[0127] The lifting drive mechanism 402 is used to drive the rotating transport mechanism 401 to move up and down.

[0128] Among them, the width of the vacuum transport fork 4013 is smaller than the width of the first hollow portion 2012 of the first turntable 201, the loading conveyor belt 50 and the unloading conveyor belt 60 both include a pair of belts arranged in parallel and spaced apart, and the width of the vacuum transport fork 4013 is smaller than the spacing between the pair of belts.

[0129] It can be understood that by driving the second turntable 4011 to rotate, the vacuum transport fork 4013 can be moved between the loading conveyor belt 50, the vacuum metallurgical tool 202 and the unloading conveyor belt 60. Through the lifting drive mechanism 402, the vacuum transport fork 4013 can lift and fix the workpiece from the bottom, and lower the workpiece from the top to place it. The two vacuum transport forks 4013 can realize the loading and unloading processes synchronously, which significantly improves efficiency.

[0130] Since the second rotating disk 4011 rotates at a relatively high speed, in order to meet the load capacity requirements within the effective space and withstand the greater impact of rotational inertia, the lifting drive mechanism 402 in this embodiment adopts a wedge-shaped lifting structure. Figures 7 to 9 , Figure 7 It is a structural schematic diagram of an implementation method of the lifting drive mechanism of the present application. Figure 8 is a cross-sectional structural diagram of an embodiment of the lifting drive mechanism of the present application, Fig. 9 It is a structural schematic diagram of an implementation mode of the lifting drive mechanism of the present application without the lifting frame.

[0131] like Figures 7 to 9 As shown, the lifting drive mechanism 402 includes a base plate 4021 and an X-axis guide rail 4022 arranged on the base plate 4021, and a conversion slider 4023 is slidably mounted on the X-axis guide rail 4022. The conversion slider 4023 is also connected to a driving element 4024 for driving it to slide along the X-axis guide rail 4022.

[0132] The conversion slider 4023 is symmetrically provided with inclined guide rails 4025 on both sides in the Y-axis direction, wherein the extension direction of the inclined guide rails 4025 is inclined with respect to the X-axis direction; a lifting frame 4026 is slidably mounted on the inclined guide rails 4025, and a first supporting surface 40261 for supporting the workpiece is arranged on the top surface of the lifting frame 4026.

[0133] Based on the above structure, since the inclined guide rail 4025 is inclined relative to the X-axis direction, when the driving element 4024 controls the conversion slider 4023 to move along the X-axis, the X-axis movement can be converted into the Z-axis movement through the inclined guide rail 4025, thereby controlling the lifting frame 4026 to lift and lower the workpiece, thereby achieving the purpose of driving the workpiece to lift and lower. Compared with the traditional linear lifting device, this wedge-shaped lifting method can significantly improve the bearing capacity and movement stability; at the same time, the movement efficiency in the X-axis direction is higher, which can also improve the lifting efficiency. In addition, by adopting the driving method in the X-axis direction, the space occupied in the Z direction is converted into the lateral space, which reduces the space occupied in the Z direction and improves the convenience of maintenance.

[0134] It should be noted that, in the present embodiment, the two side surfaces of the conversion slider 4023 are symmetrically arranged with inclined guide rails 4025. In other embodiments, other numbers of inclined guide rails 4025 may be arranged on the conversion slider 4023, and the inclined guide rails 4025 may also be arranged at other positions. The lifting frame 4026 can be slidably installed on the inclined guide rails 4025, and the effect of the present embodiment can be achieved.

[0135] In order to further limit the movement direction of the lifting frame 4026 and improve the movement stability of the lifting frame 4026, the lifting drive mechanism 402 in this embodiment also includes a support seat 4027, and a Z-axis guide rail 4028 is arranged on the support seat 4027. The lifting frame 4026 can also be slidably installed on the Z-axis guide rail 4028.

[0136] Furthermore, in this embodiment, a pair of support seats 4027 are symmetrically arranged at both ends of the bottom plate 4021 in the X-axis direction, and the conversion slider 4023 is arranged in the gap between the pair of support seats 4027, thereby improving the lifting stability.

[0137] In order to prevent the support seat 4027 from affecting the driving action of the driving element 4024 on the conversion slider 4023 , an avoidance hole for avoiding the driving element 4024 is arranged on the support seat 4027 .

[0138] In order to support the workpiece located on the first supporting surface 40261 when the lifting frame 4026 is at the lowest height and prevent the weight of the workpiece from acting on the lifting frame 4026 and the inclined guide rail 4025 for a long time, a second supporting surface 40271 is arranged on the top surface of the support seat 4027 in this embodiment, and a second hollow portion 40262 is provided on the first supporting surface 40261 for avoiding the second supporting surface 40271, so that the workpiece can be supported by the support seat 4027 when the lifting frame 4026 is at the lowest height.

[0139] In order to optimize the overall layout and improve the space utilization in the Z-axis direction, in this embodiment, an opening for the second rotation drive mechanism 4012 to pass through is provided on the first supporting surface 40261, and an installation space 4029 for installing a workpiece is formed between the first supporting surface 40261 and the conversion slider 4023.

[0140] Furthermore, the top surface of the conversion slider 4023 is an inclined surface 40231 extending in the same direction as the inclined guide rail 4025 . In addition, an avoidance groove 40232 for avoiding workpieces is provided on the top surface of the conversion slider 4023 , thereby significantly increasing the volume of the installation space 4029 .

[0141] In this embodiment, the driving element 4024 is a screw-nut structure. In other embodiments, any linear driving mechanism commonly used in the art can also be used as the driving element 4024 of the present application, and can achieve the effect of this embodiment.

[0142] Based on the transfer units of the above-mentioned embodiments, the rotation time of the second turntable 4011 by 90° can be controlled to be about 1s, thereby realizing high-speed loading and unloading of workpieces. The laser processing time is generally about 2s, and the laser processing time can be adjusted by replacing laser devices of different efficiencies. Therefore, the transmission time of the workpiece between the conveyor belt and the vacuum metallurgical tool is much lower than the laser processing time, thereby realizing continuous processing of the processing station.

[0143] During the laser processing, waste pieces often appear after processing due to inaccurate positioning of the workpiece, and the product needs to be screened again. On the one hand, the processing of waste pieces occupies processing station 103, and the subsequent screening process is time-consuming and labor-intensive, which seriously affects the processing efficiency. On the other hand, the appearance of waste pieces leads to a waste of raw materials and increases the processing cost.

[0144] In order to solve the problem of increased cost and reduced efficiency caused by waste films, such as Figure 1 and Figure 2 As shown, the laser processing production line in this embodiment further includes a position detection unit 70 , a waste sheet storage unit 80 and a waste sheet transfer unit 90 .

[0145] The position detection unit 70 is arranged above the deviation correction station 102, and is used to detect the position of the workpiece located at the deviation correction station 102, and determine whether the position of the workpiece is offset;

[0146] The waste sheet storage unit 80 is arranged on the processing platform 10, and the waste sheet storage unit 80 is used to store workpieces with offset positions;

[0147] The waste sheet transfer unit 90 is arranged between the waste suction station 104 and the waste sheet storage unit 80 , and is used to transfer the workpiece with a position offset from the waste suction station 104 to the waste sheet storage unit 80 .

[0148] Specifically, see Fig.10 , Fig.10 It is a structural schematic diagram of an implementation scheme of the installation structure of the position detection unit, the waste film storage unit and the waste film transfer unit of the present application.

[0149] like Fig.10 As shown, in this embodiment, the position detection unit 70 includes four cameras 701 distributed at four corners, the shooting ends of the cameras 701 are directed toward the deviation correction station 102, and each camera 701 is used to capture an image of a corner of the workpiece.

[0150] It can be understood that the position detection unit 70 further includes a control mechanism, which is used to compare the image of the workpiece with a preset image and evaluate whether the position of the workpiece is offset based on the comparison result.

[0151] The control mechanism can be any conventional component in the art that can realize the image comparison function, such as a single-chip microcomputer, etc., which will not be described in detail here.

[0152] In order to realize the installation of the position detection unit 70, a pair of columns 100 and a top plate 110 arranged on the top of the pair of columns 100 are arranged on the processing platform 10, and a third hollow portion 1101 corresponding to the position of the correction station 102 is arranged on the top plate 110, and the third hollow portion 1101 is installed with a pair of relatively arranged back plates 120, one end of the back plate 120 is fixed to the side wall of the third hollow portion 1101, and the other end is extended toward the direction of the correction station 102, and four cameras 701 are symmetrically arranged on the pair of back plates 120.

[0153] It can be understood that the four cameras 701 can respectively capture images of the four corners of the workpiece to obtain the position of the workpiece. By comparing the position of the workpiece with the preset position, it can be determined whether the position of the workpiece is offset relative to the preset position.

[0154] In order to ensure the overall processing accuracy, the processing platform 10, the column 100 and the top plate 110 can be made of natural marble.

[0155] It can be understood that after the camera 701 captures the image of the workpiece, if it is determined based on the image that the position of the workpiece is offset, the workpiece can directly skip the processing station 103 and be transferred to the waste suction station 104 without being processed. The workpiece with an offset position can be transferred to the waste sheet storage unit 80 by the waste sheet transfer unit 90 at the waste suction station 104. On the one hand, it avoids the waste of raw materials caused by the processing of the workpiece with an offset position, and the workpiece can be reused, avoiding the waste of raw materials. On the other hand, it avoids the processing of the workpiece with an offset position, improves the processing efficiency, and avoids the subsequent screening process.

[0156] Specifically, see Fig.11 , Fig.11 Schematic diagram of the structure of an embodiment of the waste film transfer unit of the present application. Fig.11 As shown, the waste film transfer unit 90 includes a displacement drive mechanism 901 arranged on the column 100, the displacement drive mechanism 901 includes a first end 9011 located at the waste film storage unit 80 and a second end 9012 located above the waste suction station 104, and the displacement drive mechanism 901 includes a movable end 9013 that can switch positions between the first end 9011 and the second end 9012.

[0157] A cantilever 902 is arranged on the movable end 9013 , and the cantilever 902 faces a vacuum suction cup 903 on one side of the processing platform 10 , and the vacuum suction cup 903 is used to absorb and fix the workpiece.

[0158] It can be understood that when it is determined that the position of the workpiece is offset, the workpiece can be adsorbed and fixed by the vacuum suction cup 903 when it reaches the waste suction station 104. Then, under the action of the displacement drive mechanism 901, the workpiece can be transferred to the waste film storage unit 80. Then, the vacuum suction cup 903 releases the workpiece to complete the storage of the waste films, and the stored workpiece can be reused.

[0159] In this embodiment, the displacement driving machine is a magnetically coupled rodless cylinder. In other embodiments, the displacement driving mechanism 901 may also adopt any linear displacement mechanism commonly used in the art, which can achieve the effect of this embodiment.

[0160] Furthermore, in order to ensure the image acquisition effect of the position detection unit 70, as Figure 1 and Fig.10 As shown, in this embodiment, a backlight unit 130 is also arranged below the position detection unit 70, see Fig.12 , Fig.12 It is a structural schematic diagram of an embodiment of a backlight unit of the present application.

[0161] like Fig.12 As shown, the backlight unit 130 includes a surface light source 1301 and a bracket 1302. The surface light source 1301 is arranged below the position detection unit 70, and the surface light source 1301 is used to provide backlight when the workpiece is subjected to position detection; the bracket 1302 is arranged on the processing platform 10, and the bracket 1302 includes a support plate 1303 for supporting the surface light source 1301.

[0162] Dust will be generated during the laser processing process. The dust may remain and accumulate on the surface light source 1301, affecting the correction of the camera 701. In order to avoid the influence of dust, in the present embodiment, a blowing plate 1306 is further arranged at one end of the support plate 1303. The blowing plate 1306 is arranged at the blowing port 1307 on the side facing the surface light source 1301, and a blowing channel 1308 connected to the blowing port 1307 is formed inside the blowing plate 1306.

[0163] Based on the above solution, intermittent blowing of air toward the surface of the surface light source 1301 by the blowing plate 1306 can effectively remove the dust accumulated on the surface light source 1301 and ensure the correction effect of the camera 701.

[0164] Furthermore, in order to optimize the dust removal effect, the support plate 1303 in this embodiment is tilted, and the support plate 1303 includes a relatively high end 1304 and a low end 1305, and the blowing plate 1306 is arranged at the high end 1304, so as to blow the dust downward to avoid the possibility of secondary accumulation of dust.

[0165] Please continue reading Figure 1In order to prevent the dust generated during laser processing from overflowing and adhering to the surface of the laser processing head, the platform module in this embodiment also includes a dust collection unit 140, see Fig.13 , Fig.13 It is a structural schematic diagram of an embodiment of a dust collecting unit of the present application.

[0166] like Fig.13 As shown, the dust collecting unit 140 includes a dust collecting base 1401, a dust collecting cover 1402 and a dust collecting pipe 1403. The dust collecting base 1401 is arranged on the processing platform 10, and the dust collecting cover 1402 is installed on the dust collecting base 1401, and the dust collecting cover 1402 is located above the processing station 103, and the bottom surface of the dust collecting cover 1402 is arranged with a first opening 14021 for exposing the workpiece, the top surface is arranged with a second opening 14022 for avoiding the laser, and the side is arranged with a dust collecting port 14023, and one end of the dust collecting pipe 1403 is connected to the dust collecting port 14023, so as to extract and collect the dust generated during processing.

[0167] In addition, if Figure 1 and Figure 2 As shown, the laser processing unit 30 in this embodiment can be any laser processing structure commonly used in the art, for example, it can include a laser generator, an optical path component, a laser processing head, etc., and its specific structure will not be repeated here.

[0168] Based on the laser processing production line of the above-mentioned embodiments, on the one hand, through the cooperation of the first turntable 201 and the second turntable 4011, continuous loading and unloading and continuous laser processing can be realized, thereby significantly improving the processing efficiency; on the other hand, through the annular distribution of the workstations and the optimized layout of each component, the equipment occupied area is significantly reduced; on the third hand, the waste of raw materials and time caused by the processing of workpieces with position displacement is avoided, thereby improving the processing efficiency and reducing the cost.

[0169] This application also provides a control method for the laser processing production line in each of the above embodiments, see Fig.14 , Fig.14 It is a flow chart of an implementation method of a control method of a laser processing production line of the present application.

[0170] like Fig.14 As shown, the control method includes:

[0171] S100, controlling the loading conveyor belt to sequentially transfer the workpieces to the transfer unit.

[0172] S200, control the transfer unit to transfer workpiece No. n to the vacuum tool located at the loading and unloading station.

[0173] S300, control the first turntable to rotate, transfer workpiece No. n to the deviation correction station, and control the transfer unit to transfer workpiece No. n+1 to the vacuum metallurgy located at the loading and unloading station.

[0174] S400, controlling the position detection unit to detect the position of workpiece No. n, and determining whether the position of workpiece No. n is offset.

[0175] If there is no offset, then:

[0176] S500a, control the first turntable to rotate, transfer workpiece No. n to the processing station, control the laser processing unit to process workpiece No. n, and control the transfer unit to transfer workpiece No. n+2 to the vacuum metallurgy located at the loading and unloading station.

[0177] S600a, control the first turntable to rotate, transfer workpiece No. n to the waste suction station, and control the transfer unit to transfer workpiece No. n+3 to the vacuum metallurgy located at the loading and unloading station.

[0178] S700, control the first turntable to rotate, transfer workpiece No. n to the loading and unloading station, control the transfer unit to transfer workpiece No. n to the unloading conveyor belt, and transfer workpiece No. n+4 to the vacuum metallurgy located at the loading and unloading station.

[0179] If there is an offset, then:

[0180] S500b, controlling the first turntable to rotate, transferring workpiece No. n to the processing station, controlling the laser processing unit not to work, and controlling the transfer unit to transfer workpiece No. n+2 to the vacuum metallurgy located at the loading and unloading station;

[0181] S600b, control the first turntable to rotate, transfer workpiece No. n to the waste suction station, control the waste sheet transfer unit to transfer workpiece No. n from the waste suction station to the waste sheet storage unit for collection, and control the transfer unit to transfer workpiece No. n+3 to the vacuum metallurgy located at the loading and unloading station.

[0182] In one embodiment, the transfer unit includes a rotating conveying mechanism and a lifting drive mechanism for driving the rotating conveying mechanism to lift and lower. The rotating conveying mechanism includes a second turntable, a second rotating drive mechanism for driving the second turntable to rotate, and two vacuum conveying forks. The two vacuum conveying forks are arranged on the second turntable at intervals along the circumference of the second turntable and are distributed at 90°. The loading conveyor belt and the unloading conveyor belt are arranged on both sides of the transfer unit and are arranged at an angle of 180°.

[0183] The steps of controlling the transfer unit to transfer workpiece No. n to the unloading conveyor belt and to transfer workpiece No. n+4 to the vacuum metallurgical tool located at the unloading and loading station may specifically include:

[0184] Control the second turntable to descend to the lowest position and rotate it to position so that the two vacuum transfer forks are located at the end of the loading conveyor belt and the loading and unloading stations respectively;

[0185] The second turntable is controlled to rise to the highest position, and workpiece No. n and workpiece No. n+4 are respectively lifted and supported by two vacuum transfer forks;

[0186] Control the second turntable to rotate 90° so that the two vacuum handling forks are located at the loading and unloading stations and the beginning of the unloading conveyor belt respectively;

[0187] The second turntable is controlled to descend to the lowest position, and workpiece No. n and workpiece n+4 are respectively supported by the unloading conveyor belt and the vacuum fixture located at the unloading and loading stations.

[0188] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0189] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser processing production line, characterized in that: include: The processing platform has loading and unloading stations, deviation correction stations, processing stations, and waste suction stations evenly spaced in sequence on its surface, and the loading and unloading stations, deviation correction stations, processing stations, and waste suction stations are distributed in a ring shape; A workpiece fixing unit is arranged on the processing platform, the workpiece fixing unit includes a rotatable first turntable and four vacuum fixtures evenly spaced along the circumference of the first turntable, the four vacuum fixtures respectively corresponding to the positions of the loading and unloading stations, the deviation correction station, the processing station, and the waste suction station, each of the vacuum fixtures includes a first vacuum adsorption surface for adsorbing and fixing the workpiece; A laser processing unit is arranged above the processing station; A transfer unit is arranged next to the loading and unloading station; Loading conveyor belt and unloading conveyor belt are used to transfer workpieces; The transfer unit is used to transfer the unprocessed workpiece from the loading conveyor to the vacuum metallurgy located at the loading and unloading station, and to transfer the processed workpiece from the vacuum metallurgy located at the loading and unloading station to the unloading conveyor.

2. The laser processing production line according to claim 1, characterized in that: The workpiece fixing unit also includes: A first rotation driving mechanism, used for driving the first rotating disk to rotate; A rotary joint is arranged on the first rotary disk and extends along the axial direction of the first rotary disk, the rotary joint comprises a first section connected to the first rotary disk and a second section rotatable relative to the first section, and a vacuum channel communicating with the vacuum metallurgical tool is formed inside the rotary joint; A vacuum generating mechanism is arranged in the second section of the rotary joint, and a working end of the vacuum generating mechanism is connected to the vacuum channel; The vacuum fixture is provided with a first vacuum joint at one end close to the rotary joint, the first section is provided with a second vacuum joint connected to the first vacuum joint on a side facing the vacuum fixture, and the second vacuum joint is connected to the vacuum channel.

3. The laser processing production line according to claim 1, characterized in that: The first turntable includes four support arms arranged along the circumferential direction, the support arms are extended along the radial direction of the first turntable, and the support arms correspond to the vacuum molds one by one, and the vacuum molds are arranged on the corresponding support arms; and / or, The first turntable is provided with a recessed portion matching the vacuum fixture, and the vacuum fixture is embedded in the recessed portion and fixed.

4. The laser processing production line according to claim 1, characterized in that: The vacuum metallurgy is a U-shaped structure, and the U-shaped opening is extended outward along the radial direction of the first turntable, and a first hollow portion corresponding to the position of the U-shaped opening is arranged on the first turntable.

5. The laser processing production line according to claim 4, characterized in that: The transfer unit comprises: The rotary transport mechanism comprises a second turntable, a second rotary drive mechanism for driving the second turntable to rotate, and a plurality of vacuum transport forks, wherein the plurality of vacuum transport forks are arranged on the second turntable at intervals along the circumference of the second turntable, and the vacuum transport forks comprise a second vacuum adsorption surface for adsorbing and fixing the workpiece; A lifting drive mechanism, used for driving the rotating transport mechanism to lift and lower; The width of the vacuum transport fork is smaller than the width of the first hollow portion, the loading conveyor belt and the unloading conveyor belt both include a pair of belts arranged in parallel and at intervals, and the width of the vacuum transport fork is smaller than the interval between the pair of belts.

6. The laser processing production line according to claim 5, characterized in that: The loading conveyor belt and the unloading conveyor belt are respectively arranged at both sides of the transfer unit and are arranged at an angle of 180°. The loading conveyor belt and the unloading conveyor belt are respectively arranged at an angle of 90° to the vacuum metallurgy located at the loading and unloading stations. The second turntable is provided with two vacuum transfer forks distributed at 90°.

7. The laser processing production line according to claim 5, characterized in that: The lifting drive mechanism comprises: Base plate; An X-axis guide rail is arranged on the bottom plate; A conversion slider, slidably arranged on the X-axis guide rail; An inclined guide rail is arranged on the conversion slider, and the inclined guide rail extends in a direction inclined relative to the X-axis direction; A driving slider slidably arranged on the inclined guide rail; A lifting frame, arranged above the conversion slider and fixed to the driving slider, the top surface of the lifting frame is provided with a first supporting surface for carrying the rotating transport mechanism; A driving element, used for driving the conversion slider to slide along the X-axis guide rail; A support seat, arranged on the bottom plate; The Z-axis guide rail is arranged on the support seat, and the lifting frame is slidably arranged on the Z-axis guide rail.

8. The laser processing production line according to claim 7, characterized in that: The top surface of the support seat is provided with a second support surface, and the first support surface is provided with a second hollow portion for avoiding the second support surface; The first supporting surface is provided with an opening for the second rotary drive mechanism to pass through, and an installation space for installing the second rotary drive mechanism is formed between the first supporting surface and the conversion slider; the top surface of the conversion slider is an inclined surface extending in the same direction as the inclined guide rail, and the top surface of the conversion slider is provided with an avoidance groove for avoiding the second rotary drive mechanism.

9. The laser processing production line according to claim 1, characterized in that: Also includes: A position detection unit is arranged above the deflection correction station, and is used to detect the position of the workpiece located at the deflection correction station and determine whether the position of the workpiece is offset; A waste sheet storage unit is arranged on the processing platform, and the waste sheet storage unit is used to store workpieces with offset positions; The waste film transfer unit is arranged between the waste suction station and the waste film storage unit. The waste film transfer device is used to transfer the workpiece with a position offset from the waste suction station to the waste film storage unit.

10. The laser processing production line according to claim 9, characterized in that: The position detection unit includes four cameras distributed at four corners, the shooting ends of the cameras point to the deviation correction station, and each of the cameras is used to capture an image of a corner of a workpiece.

11. The laser processing production line according to claim 9, characterized in that: Also includes: A column arranged on the processing platform; A top plate, arranged on the top of the column, and a third hollow portion corresponding to the position of the deviation correction station is arranged on the top plate; A pair of back plates are arranged opposite to each other, one end of the back plates is fixed to the side wall of the third hollow portion, and the other end of the back plates is extended toward the direction of the deviation correction station; Wherein, the position detection unit is arranged on the back plate; The waste film transfer unit comprises: A displacement drive mechanism is arranged on the column, the displacement drive mechanism comprises a first end located above the waste film storage unit and a second end located above the waste suction station, and the displacement drive mechanism comprises a movable end capable of switching positions between the first end and the second end; A cantilever, arranged at the moving end; A vacuum suction cup is arranged on the side of the cantilever facing the processing platform, and the vacuum suction cup is used to absorb and fix the workpiece.

12. The laser processing production line according to claim 9, characterized in that: Also included is a backlight unit, the backlight unit comprising: A surface light source is arranged below the position detection unit, and the surface light source is used to provide backlight when the workpiece is subjected to position detection; A bracket, arranged on the processing platform, the bracket comprising a supporting plate for supporting the surface light source; A blowing plate is arranged at one end of the support plate, the blowing plate is arranged at the blowing port on one side facing the surface light source, and a blowing channel connected to the blowing port is formed inside the blowing plate; Wherein, the support plate is arranged at an angle, and the support plate comprises a high end and a low end which are arranged opposite to each other, and the blowing plate is arranged at the high end.

13. The laser processing production line according to claim 1, characterized in that: It also includes a dust collecting unit and a tidying unit, wherein the dust collecting unit includes: A dust collecting base, arranged on the processing platform; A dust collecting hood is installed on the dust collecting base, the dust collecting hood is located above the processing station, the bottom surface of the dust collecting hood is arranged with a first opening for exposing the workpiece, the top surface is arranged with a second opening for avoiding the laser, and the side surface is arranged with a dust collecting port; A dust collecting pipe has one end connected to the dust collecting port.

14. A control method for a laser processing production line according to any one of claims 1 to 13, characterized in that: The laser processing production line further includes a position detection unit, which is arranged above the deviation correction station and is used to detect the position of the workpiece located at the deviation correction station and determine whether the workpiece position is offset; The control method comprises: Controlling the loading conveyor belt to sequentially transfer the workpieces to the transfer unit; Controlling the transfer unit to transfer workpiece No. n to the vacuum tool located at the loading and unloading station; Control the first turntable to rotate, transfer workpiece No. n to the deviation correction station, and control the transfer unit to transfer workpiece No. n+1 to the vacuum metallurgy located at the loading and unloading station; Controlling the position detection unit to detect the position of workpiece No. n, and determining whether the position of workpiece No. n is offset; Control the first turntable to rotate, transfer workpiece No. n to the processing station, and control the transfer unit to transfer workpiece No. n+2 to the vacuum metallurgy located at the loading and unloading station; If there is no offset in the position of workpiece No. n, controlling the laser processing unit to process workpiece No. n; Control the first turntable to rotate, transfer workpiece No. n to the waste suction station, and control the transfer unit to transfer workpiece No. n+3 to the vacuum metallurgy located at the loading and unloading station; Control the first turntable to rotate, transfer workpiece No. n to the loading and unloading station, control the transfer unit to transfer workpiece No. n to the unloading conveyor belt and transfer workpiece No. n+4 to the vacuum metallurgy located at the loading and unloading station.

15. The control method according to claim 14, characterized in that: The laser processing production line further includes a waste film storage unit and a waste film transfer unit. The waste film storage unit is arranged on the processing platform and is used to store workpieces with offset positions. The waste film transfer unit is arranged between the waste suction station and the waste film storage unit. The waste film transfer device is used to transfer the workpieces with offset positions from the waste suction station to the waste film storage unit. If the position of workpiece n is offset, the control method further includes: When workpiece No. n is transferred to the processing station, the laser processing unit is controlled not to work; When workpiece No. n is transferred to the waste suction station, the waste sheet transfer unit is controlled to transfer workpiece No. n from the waste suction station to the waste sheet storage unit for collection.

16. The control method according to claim 15, characterized in that: The transfer unit includes a rotary transport mechanism and a lifting drive mechanism for driving the rotary transport mechanism to lift and lower. The rotary transport mechanism includes a second turntable, a second rotary drive mechanism for driving the second turntable to rotate, and two vacuum transport forks. The two vacuum transport forks are arranged on the second turntable at intervals along the circumference of the second turntable and are distributed at 90°. The loading conveyor belt and the unloading conveyor belt are arranged on both sides of the transfer unit and are arranged at an angle of 180°. The steps of controlling the transfer unit to transfer workpiece No. n to the unloading conveyor belt and to transfer workpiece No. n+4 to the vacuum metallurgical tool located at the unloading and loading station are specifically as follows: Control the second turntable to descend to the lowest position and rotate it to the position so that the two vacuum transfer forks are located at the end of the loading conveyor belt and the loading and unloading stations respectively; The second turntable is controlled to rise to the highest position, and workpiece No. n and workpiece No. n+4 are respectively lifted and supported by two vacuum transfer forks; Control the second turntable to rotate 90 degrees so that the two vacuum transfer forks are respectively located at the loading and unloading station and the starting end of the unloading conveyor belt; The second turntable is controlled to descend to the lowest position, and workpiece No. n and workpiece n+4 are respectively lifted and supported by the unloading conveyor belt and the vacuum mold located at the unloading and loading stations.

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