A panel transfer system and body-in-white production line

Abstract

The present invention discloses a panel transfer system and a body-in-white production line, wherein the panel transfer system comprises a frame, a transfer mechanism and a material transfer mechanism; the frame extends in a transverse direction and is sequentially provided with a loading station, at least one buffer station and an unloading station, and a support frame is provided at each corresponding station for placing the panels; the transfer mechanism is provided on the frame, and comprises a first transfer part and a second transfer part arranged side by side and spaced apart in a transverse direction, the first transfer part and the second transfer part are arranged in linkage and can move in a transverse direction, the first transfer part circulates between the loading station and the buffer station for transferring the panels at the loading station to the buffer station, and correspondingly, the second transfer part circulates between the buffer station and the unloading station for transferring the panels at the buffer station to the unloading station; the material transfer mechanism is used for transferring the panels between the support frame of each station and the first transfer part and / or the second transfer part; in this way, the automatic transfer of the thin panels of the body-in-white is realized, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle body manufacturing, and in particular to a panel transfer system and a body-in-white production line. Background Art

[0002] The white body of a car has many structures with inner panel frames and outer panel skins welded together. The inner panels need to be welded first, and then the outer panels are placed on the inner panels for welding. The most commonly used structure is the inner panel frame and outer panel skin welding of the commercial vehicle cab. For example, the rear panel assembly structure needs to be welded after the rear panel inner panel assembly is completed, and then the rear panel outer panel is placed on the inner panel assembly for welding. After the implementation of robot welding automation transformation, the existing technology still uses manual labor to directly place the outer panel on the inner panel assembly, which not only poses safety risks, but also makes the production operation efficiency low. Summary of the invention

[0003] The main purpose of the present invention is to provide a panel transfer system and a body-in-white production line, aiming to solve the problem that the existing manual transfer of panels may bring potential safety hazards and reduce production efficiency.

[0004] To achieve the above object, the present invention provides a plate transfer system, comprising:

[0005] The frame extends in the transverse direction and is sequentially provided with a loading station, at least one buffer station and a unloading station, wherein the frame is provided with a support frame at each station corresponding to the loading station for placing the plate;

[0006] A transfer mechanism is provided on the frame, and includes a first transfer part and a second transfer part which are arranged side by side and spaced apart in the transverse direction, the first transfer part and the second transfer part are arranged in linkage and can move in the transverse direction, the first transfer part flows between the loading station and the buffer station, and is used to transfer the plate at the loading station to the buffer station, and correspondingly, the second transfer part flows between the buffer station and the unloading station, and is used to transfer the plate at the buffer station to the unloading station; and,

[0007] The material transfer mechanism is used to transfer the sheet material between the support frame and the first transfer part and / or the second transfer part at each workstation.

[0008] Optionally, the cache stations are provided with two, and the two cache stations include a first cache station and a second cache station which are arranged side by side in the transverse direction, the first cache station is arranged close to the loading station, and the second cache station is arranged close to the unloading station;

[0009] The transfer mechanism further includes a third transfer part located between the first transfer part and the second transfer part, the third transfer part being arranged in linkage with the first transfer part and the second transfer part, the third transfer part being transferred between the first buffer station and the second buffer station, and being used to transfer the plate in the first buffer station to the second buffer station;

[0010] Correspondingly, the first transfer unit circulates between the loading station and the first buffer station;

[0011] The second transfer part circulates between the second buffer station and the unloading station.

[0012] Optionally, the frame is provided with a lifting position and a dropping position at each corresponding workstation;

[0013] The support frame on each workstation is at the blanking position;

[0014] The material transfer mechanism comprises two lifting parts respectively arranged on the first transfer part and the second transfer part, and the two lifting parts can move in the up and down directions;

[0015] The first transfer part is located at the buffer station, the lifting part on the first transfer part moves upward to the lifting position, and is used to lift the plate on the support frame of the buffer station, the first transfer part is used to drive the plate to move to the unloading station, and the lifting part on the first transfer part moves downward to the unloading position, and is used to drop the plate to the support frame of the unloading station;

[0016] The second transfer part is at the loading station, and the lifting part on the second transfer part moves upward to the lifting position to lift the panel on the support frame of the loading station. The second transfer part is used to drive the panel to move to the buffer station, and the lifting part on the second transfer part moves downward to the dropping position to drop the panel to the support frame of the buffer station.

[0017] Optionally, a mounting portion is provided on the first transfer portion and / or the second transfer portion;

[0018] The lifting part comprises:

[0019] A lifting frame is movably mounted on the mounting portion in an up-and-down direction; and

[0020] A positioning structure is arranged on the installation part, and the positioning structure includes a plurality of support blocks and a plurality of positioning pins. Each of the positioning pins can move in the up and down directions to be able to move to jointly support the positioning plate with the plurality of support blocks.

[0021] Optionally, the plate transfer system further comprises an air circuit driving structure, a connecting air circuit is formed on the air circuit driving structure, and a solenoid valve is provided on the connecting air circuit;

[0022] The lifting part further comprises a lifting drive cylinder and a positioning drive cylinder provided on the connecting air path, wherein the lifting drive cylinder and the positioning drive cylinder respectively drive and connect the lifting frame and the positioning pin;

[0023] The plate transfer system further includes a control component, and the control component is electrically connected to the solenoid valve.

[0024] Optionally, the plate transfer system further comprises a bearing panel arranged on the upper end surface of the frame, the bearing panel extends in the transverse direction and passes through the loading station, the buffer station and the unloading station in sequence, and the bearing panel is arranged to be tilted upward in the direction from the loading station to the unloading station;

[0025] Wherein, the first transfer part and the second transfer part are movably arranged on the carrying panel in a transverse direction.

[0026] Optionally, a slide rail is provided on the upper end surface of the bearing panel, and the slide rail extends in the transverse direction and passes through the loading station, the buffer station and the unloading station in sequence;

[0027] The first transfer part comprises a first transfer plate, and a first slide groove slidably matched with the slide rail is provided at the bottom of the first transfer plate;

[0028] The second transfer portion comprises a second transfer plate, and a second slide groove slidably matched with the slide rail is formed at the bottom of the second transfer plate.

[0029] Optionally, the plate transfer system further includes a driving device, and the driving device includes:

[0030] A servo motor, the motor seat of which is arranged on the frame and corresponds to the buffer station, and the output shaft of which is arranged in the longitudinal direction; and

[0031] The gear rack transmission structure includes a gear and a rack meshing with each other. The gear is sleeved on the output shaft and rotates coaxially with the output shaft. The rack is arranged at the bottom of the second transfer plate and is arranged side by side with the second slide groove in the longitudinal direction.

[0032] Optionally, the panel transfer system further includes a material picking robot, which is disposed on one side of the frame in the longitudinal direction and is arranged corresponding to the unloading station.

[0033] The present invention further provides a body-in-white production line, the body-in-white production line includes a panel transfer system, and the panel transfer system includes:

[0034] The frame extends in the transverse direction and is sequentially provided with a loading station, at least one buffer station and a unloading station, wherein the frame is provided with a support frame at each station corresponding to the loading station for placing the plate;

[0035] A transfer mechanism is provided on the frame, and includes a first transfer part and a second transfer part which are arranged side by side and spaced apart in the transverse direction, the first transfer part and the second transfer part are arranged in linkage and can move in the transverse direction, the first transfer part flows between the loading station and the buffer station, and is used to transfer the plate at the loading station to the buffer station, and correspondingly, the second transfer part flows between the buffer station and the unloading station, and is used to transfer the plate at the buffer station to the unloading station; and,

[0036] The material transfer mechanism is used to transfer the sheet material between the support frame and the first transfer part and / or the second transfer part at each workstation.

[0037] In the technical solution of the present invention, the frame is formed with a loading station, at least one buffer station and an unloading station, and a support frame is provided at each corresponding station for placing plates; the transfer mechanism is provided on the frame, and the transfer mechanism has a first transfer part and a second transfer part which are arranged in linkage and can move laterally, the first transfer part flows between the loading station and the buffer station, and is used for transferring the plates at the loading station to the buffer station, the second transfer part flows between the buffer station and the unloading station, and is used for transferring the plates at the buffer station to the unloading station; the material transfer mechanism is used for The sheet material is transferred between the support frame at the position and the first transfer part and / or the second transfer part; during the production process, the sheet material transfer system can realize manual loading of the white body thin panels from the loading station, and the robot takes the materials from the unloading station, thereby realizing automatic transfer of the panels and improving production efficiency; at the same time, since the sheet material transfer system adopts automated transfer, the safety hazards caused by manual transfer of panels are eliminated; furthermore, the cache station is set between the loading station and the unloading station to meet the robot's seamless operation requirements, thereby eliminating the waiting phenomenon that occurs when the robot is operating, which can further improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention 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 of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1A schematic structural diagram of an embodiment of a plate transfer system provided by the present invention;

[0040] Figure 2 for Figure 1 Schematic diagram of the structure of the plate transfer system (loading process);

[0041] Figure 3 for Figure 1 The structural diagram of the plate transfer system (material taking process) in FIG.

[0042] Figure 4 for Figure 3 A schematic diagram of the structure of the panel transfer system from another angle;

[0043] Figure 5 for Figure 3 A schematic diagram of the structure of the plate in the positioning on the support frame;

[0044] Figure 6 for Figure 3 Schematic diagram of the structure of the plate (lifting state);

[0045] Figure 7 for Figure 1 A schematic diagram of the structure of the transfer mechanism in FIG.

[0046] Figure 8 for Figure 7 An enlarged schematic diagram of a local A in FIG.

[0047] Fig. 9 for Figure 7 Schematic diagram of the structure of the drive device.

[0048] Description of the accompanying drawings of the embodiments provided by the present invention:

[0049] Label name Label name 100 Panel transfer system 311 Lifting frame 1 frame 312 Positioning structure 11 Support frame 3121 Support block 12 Clamping part 3122 Positioning pin 13 Loading panel 313 Air circuit drive structure 2 Transfer agency 3131 Lifting drive cylinder 21 First transfer unit 3132 Positioning drive cylinder 22 Second transfer unit 4 Slide rails 23 The third transfer unit 5 Reclaiming robot 24 Drive device a Loading station 241 Servo Motor b First cache station 242 Rack and pinion transmission structure c Second cache station 3 Material transfer mechanism d Unloading station 31 Lifting Department 200 Panels

[0050] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] The white body of a car has many structures with inner panel frames and outer panel skins welded together. The inner panels need to be welded first, and then the outer panels are placed on the inner panels for welding. The most commonly used structure is the inner panel frame and outer panel skin welding of the commercial vehicle cab. For example, the rear panel assembly structure needs to be welded after the rear panel inner panel assembly is completed, and then the rear panel outer panel is placed on the inner panel assembly for welding. After the implementation of robot welding automation transformation, the existing technology still uses manual labor to directly place the outer panel on the inner panel assembly, which not only poses safety risks, but also makes the production operation efficiency low.

[0055] In view of this, the present invention provides a plate transfer system. Figures 1 to 9 It is a specific embodiment of the plate transfer system.

[0056] See also Figures 1 to 4The plate transfer system 100 includes a frame 1, a transfer mechanism 2 and a material transfer mechanism 3; the frame 1 extends in the horizontal direction and is sequentially formed with a loading station a, at least one buffer station and a unloading station d, and the frame 1 is provided with a support frame 11 at each corresponding station for placing the plate 200; the transfer mechanism 2 is arranged on the frame 1, and the transfer mechanism 2 includes a first transfer part 21 and a second transfer part 22 arranged side by side in the horizontal direction, and the first transfer part 21 and the second transfer part 22 are linked to each other. The first transfer part 21 is arranged and can move laterally, and is used for transferring the plate 200 of the loading station a and the buffer station. Correspondingly, the second transfer part 22 is used for transferring the plate 200 of the buffer station to the unloading station d. The material transfer mechanism 3 is used for transferring the plate 200 between the support frame 11 of each station and the first transfer part 21 and / or the second transfer part 22.

[0057] In the technical solution of the present invention, the frame 1 is formed with a loading station a, at least one buffer station and a unloading station d, and a support frame 11 is provided at each corresponding station for placing the plate 200; the transfer mechanism 2 is provided on the frame 1, and the transfer mechanism 2 has a first transfer part 21 and a second transfer part 22 which are arranged in linkage and can move laterally, the first transfer part 21 flows between the loading station a and the buffer station, and is used to transfer the plate 200 of the loading station a to the buffer station, the second transfer part 22 flows between the buffer station and the unloading station d, and is used to transfer the plate 200 of the buffer station to the unloading station d; the transfer mechanism 3 is used to The sheet material is transferred between the support frame 11 of each workstation and the first transfer part 21 and / or the second transfer part 22; during the production process, the sheet material transfer system 100 can realize manual loading of the body-in-white thin panel 200 from the loading station a, and the robot takes the material from the unloading station d, thereby realizing the automatic transfer of the sheet material 200 and improving the production efficiency; at the same time, since the sheet material transfer system 100 adopts automated transfer, the safety hazard caused by manual transfer of the sheet material 200 is eliminated; furthermore, the cache station is set between the loading station a and the unloading station d to meet the robot's seamless operation requirements, thereby eliminating the waiting phenomenon that occurs when the robot is operating, which can further improve the production efficiency.

[0058] Specifically, two cache stations are provided, and the two cache stations include a first cache station b and a second cache station c which are arranged side by side in the horizontal direction, the first cache station b is arranged close to the loading station a, and the second cache station c is arranged close to the unloading station d; the transfer mechanism 2 also includes a third transfer part 23 located between the first transfer part 21 and the second transfer part 22, the third transfer part 23 is arranged in linkage with the first transfer part 21 and the second transfer part 22, the third transfer part 23 circulates between the first cache station b and the second cache station c, and is used to transfer the plate 200 of the first cache station b to the second cache station c; correspondingly, the first transfer part 21 circulates between the loading station a and the first cache station b; the second transfer part 22 circulates between the second cache station c and the unloading station d; in this embodiment, two cache stations are provided to meet the operation requirements of the robot for seamless connection, thereby eliminating the waiting phenomenon that occurs when the robot is operating, and can further improve production efficiency.

[0059] In one embodiment of the present invention, see Figures 7 to 9, the frame 1 is provided with a lifting position and a blanking position at each corresponding station; the support frame 11 on each station is in the blanking position; the transfer mechanism 3 includes two lifting parts 31 respectively arranged on the first transfer part 21 and the second transfer part 22, and the two lifting parts 31 can move in the up and down directions; wherein, the first transfer part 21 is in the buffer station, and the lifting part 31 on the first transfer part 21 moves upward to the lifting position, which is used to lift the plate 200 on the support frame of the buffer station, and the first transfer part 21 is used to drive the plate 200 to move to the blanking station d, which is in The lifting part 31 on the first transfer part 21 moves downward to the blanking position, so as to allow the plate 200 to be dropped onto the support frame of the blanking station d; the second transfer part 22 is at the loading station a, and the lifting part 31 on the second transfer part 22 moves upward to the lifting position, so as to lift the plate 200 on the support frame of the loading station a, and the second transfer part 22 is used to drive the plate 200 to move to the buffer station, and the lifting part 31 on the second transfer part 22 moves downward to the blanking position, so as to allow the plate 200 to be dropped onto the support frame of the buffer station; that is, in the transfer part 22, During the feeding process, the plate 200 is manually loaded to the loading station a. At this time, the second transfer part 22 is at the loading station a, and the lifting part 31 on the second transfer part 22 moves upward to the lifting position to lift the plate 200. The second transfer part 22 drives the plate 200 to move to the buffer station, and the lifting part 31 moves downward to the blanking position to allow the plate 200 to be blanked onto the support frame of the buffer station. At the same time, since the first transfer part 21 and the second transfer part 22 are arranged in linkage and can move horizontally, when the second transfer part 22 is at the loading station a, the first transfer part 21 is in the cache station, the lifting part 31 on the first transfer part 21 moves upward to the lifting position, and is used to lift the panel 200 on the support frame of the cache station. When the second transfer part 22 moves horizontally to the cache station, the first transfer part 21 also moves toward the unloading station d, and at the same time drives the panel 200 to move to the unloading station d. The lifting part 31 on the first transfer part 21 moves downward to the blanking position, and is used to make the panel 200 drop to the support frame of the unloading station d; in this way, the automatic transfer of the panel 200 is realized, and the production efficiency is improved.

[0060] See also Figure 5It should be noted that when the panel 200 is transferred to each workstation, the lifting part 31 will drive the panel 200 to move downward to the blanking position, so that the panel 200 is blanked onto the support frame of the corresponding workstation. In order to ensure the stability of the panel 200 on the support frame, a clamping part 12 is provided on the support frame. The clamping part 12 is movably provided, and is used to move to the clamping position when the panel 200 is blanked onto the support frame of the corresponding workstation, so as to clamp the corresponding panel 200 on the support frame, and can move to the relaxation position when the lifting part 31 lifts and blanks the panel 200, so that the lifting part 31 can lift and blank the panel 200; such a configuration will not interfere with the lifting and lowering of the lifting part 31, and can also fix the panel 200 when the panel 200 is blanked onto the support frame of the corresponding workstation, so as to improve the stability of the panel 200.

[0061] Specifically, see Figure 4 and Figure 6 , a mounting portion is provided on the first transfer portion 21 and / or the second transfer portion 22; the lifting portion 31 includes a lifting frame 311 and a positioning structure 312; the lifting frame 311 is movably installed on the mounting portion along the up-down direction; the positioning structure 312 is provided on the mounting portion, and the positioning structure 312 includes a plurality of support blocks 3121 and a plurality of positioning pins 3122, each of the positioning pins 3122 can be moved along the up-down direction, and is used to be able to move to support the positioning plate 200 together with the plurality of support blocks 3121; it should be noted that when the lifting portion 31 lifts the plate 200, the lifting frame 311 moves upward so that the lifting frame 311 can move upward. The multiple support blocks 3121 on 11 are in contact with the panel 200, and each of the positioning pins 3122 moves upward to position the panel 200. At this time, the lifting frame 311 continues to move upward to the lifting position, thereby driving the panel 200 to move to the lifting position; at the same time, when the lifting frame 311 drives the panel 200 to fall to the falling position, the multiple support blocks 3121 on the lifting frame 311 are separated from the panel 200, so that the panel 200 is placed on the support frame of the corresponding workstation. At this time, each of the positioning pins 3122 moves downward to release the panel 200; such a configuration can ensure the stability of the panel 200 during the transfer process.

[0062] More specifically, the panel transfer system 100 also includes an air circuit drive structure 313, on which a connecting air circuit is formed, and an electromagnetic valve is provided on the connecting air circuit; the lifting part also includes a lifting drive cylinder 3131 and a positioning drive cylinder 3132 arranged on the connecting air circuit, and the lifting drive cylinder 3131 and the positioning drive cylinder 3132 respectively drive the connection between the lifting frame 311 and the positioning pin 3122; the panel transfer system 100 also includes a control component, which is electrically connected to the electromagnetic valve; that is, the lifting frame 311 and each positioning pin 3122 are driven to move by the lifting drive cylinder 3131 and the positioning drive cylinder 3132, which has a simple structure and is easy to operate; at the same time, the electromagnetic valve is provided to control the lifting drive cylinder 3131 and the positioning drive cylinder 3132 to start or shut down.

[0063] Please read further Figure 1 The panel transfer system 100 also includes a load-bearing panel 13 arranged on the upper end surface of the frame 1, the load-bearing panel 13 extends horizontally and passes through the loading station a, the buffer station and the unloading station d in sequence, and the load-bearing panel 13 is tilted upward in the direction from the loading station a to the unloading station d; wherein, the first transfer portion 21 and the second transfer portion 22 are movably arranged on the load-bearing panel 13 along the horizontal direction; in this embodiment, the load-bearing panel 13 is tilted to realize manual loading of the body-in-white thin plate 200 from the loading station a at a low position, and after being transferred to the unloading station d at a high position, it is picked up by a robot; in this way, not only the robot welding automation operation is realized and the production efficiency is improved; but also it is convenient for manual loading and robot picking up, eliminating the safety hazards caused by manual transfer of the panel 200.

[0064] See also Fig. 9 In order to ensure the activity stability of the first transfer part 21 and the second transfer part 22, in the present invention, a slide rail 4 is provided on the upper end surface of the bearing panel 13, and the slide rail 4 extends horizontally and passes through the loading station a, the buffer station and the unloading station d in sequence; the first transfer part 21 includes a first transfer plate, and a first slide groove that slides with the slide rail 4 is provided at the bottom of the first transfer plate; the second transfer part 22 includes a second transfer plate, and a second slide groove that slides with the slide rail 4 is provided at the bottom of the second transfer plate; in this embodiment, by arranging the slide rail 4, the first slide groove and the second slide groove, not only the activities of the first transfer part 21 and the second transfer part 22 are smoother, but also the stability of the first transfer part 21 and the second transfer part 22 is improved.

[0065] Specifically, the plate transfer system 100 also includes a driving device 24, which includes a servo motor 241 and a gear rack transmission structure 242; the motor seat of the servo motor 241 is arranged on the frame 1 and corresponds to the buffer station, and its output shaft is arranged in the longitudinal direction; the gear rack transmission structure 242 includes a gear and a rack that mesh with each other, the gear is sleeved on the output shaft and rotates coaxially with the output shaft, and the rack is arranged at the bottom of the second transfer plate and is arranged side by side with the second slide groove in the longitudinal direction; by arranging the servo motor 241 and the gear rack transmission structure 242, the first transfer part 21 and the second transfer part 22 can be moved on the frame 1, with a simple structure, easy operation and low cost; at the same time, by using the servo motor 241 for transportation, high-speed and stable transportation can be achieved, and height difference transportation can be achieved by matching the appropriate motor power.

[0066] In the present invention, further reference is made to Figure 1 The panel transfer system 100 also includes a material picking robot 5, which is arranged on one side of the frame 1 in the longitudinal direction and corresponds to the unloading station d. By setting the material picking robot 5, the robot can pick up materials from the unloading station d, thereby realizing automatic transfer of the panel 200 and improving production efficiency. At the same time, the robot picks up materials from the unloading station d, eliminating the safety hazards caused by manual material picking.

[0067] The present invention also provides a body-in-white production line, which includes a panel transfer system 100. It should be noted that the panel transfer system 100 is configured as the above-mentioned panel transfer system 100, that is, the body-in-white production line includes all technical features of all embodiments of the above-mentioned panel transfer system 100, and also has all technical effects brought by all technical features, which will not be described one by one here.

[0068] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A plate transfer system, characterized in that: include: The frame extends in the transverse direction and is sequentially provided with a loading station, at least one buffer station and a unloading station, wherein the frame is provided with a support frame at each station corresponding to the loading station for placing the plate; A transfer mechanism is provided on the frame, and includes a first transfer part and a second transfer part which are arranged side by side and spaced apart in the transverse direction, the first transfer part and the second transfer part are arranged in linkage and can move in the transverse direction, the first transfer part flows between the loading station and the buffer station, and is used to transfer the plate at the loading station to the buffer station, and correspondingly, the second transfer part flows between the buffer station and the unloading station, and is used to transfer the plate at the buffer station to the unloading station; and, A material transfer mechanism, used for transferring sheet materials between the support frame and the first transfer part and / or the second transfer part at each workstation; There are two cache stations, and the two cache stations include a first cache station and a second cache station arranged side by side in the transverse direction, the first cache station is arranged close to the loading station, and the second cache station is arranged close to the unloading station; The transfer mechanism further includes a third transfer part located between the first transfer part and the second transfer part, the third transfer part being arranged in linkage with the first transfer part and the second transfer part, the third transfer part being transferred between the first buffer station and the second buffer station, and being used to transfer the plate in the first buffer station to the second buffer station; Correspondingly, the first transfer unit circulates between the loading station and the first buffer station; The second transfer part circulates between the second buffer station and the unloading station.

2. The panel transfer system according to claim 1, characterized in that: The frame is provided with a lifting position and a material dropping position at each corresponding workstation; The support frame on each workstation is at the blanking position; The material transfer mechanism comprises two lifting parts respectively arranged on the first transfer part and the second transfer part, and the two lifting parts can move in the up and down directions; The first transfer part is located at the buffer station, the lifting part on the first transfer part moves upward to the lifting position, and is used to lift the plate on the support frame of the buffer station, the first transfer part is used to drive the plate to move to the unloading station, and the lifting part on the first transfer part moves downward to the unloading position, and is used to drop the plate to the support frame of the unloading station; The second transfer part is at the loading station, and the lifting part on the second transfer part moves upward to the lifting position to lift the panel on the support frame of the loading station. The second transfer part is used to drive the panel to move to the buffer station, and the lifting part on the second transfer part moves downward to the dropping position to drop the panel to the support frame of the buffer station.

3. The panel transfer system according to claim 2, characterized in that: The first transfer part and / or the second transfer part is provided with a mounting part; The lifting part comprises: A lifting frame is movably mounted on the mounting portion in an up-and-down direction; and A positioning structure is arranged on the installation part, and the positioning structure includes a plurality of support blocks and a plurality of positioning pins. Each of the positioning pins can move in the up and down directions to be able to move to jointly support the positioning plate with the plurality of support blocks.

4. The panel transfer system according to claim 3, characterized in that: The plate transfer system further comprises an air circuit driving structure, a connecting air circuit is formed on the air circuit driving structure, and a solenoid valve is provided on the connecting air circuit; The lifting part further comprises a lifting drive cylinder and a positioning drive cylinder provided on the connecting air path, wherein the lifting drive cylinder and the positioning drive cylinder respectively drive and connect the lifting frame and the positioning pin; The plate transfer system further includes a control component, and the control component is electrically connected to the solenoid valve.

5. The panel transfer system according to claim 1, characterized in that: The plate transfer system further comprises a bearing panel disposed on the upper end surface of the frame, the bearing panel extending in a transverse direction and sequentially passing through the loading station, the buffer station and the unloading station, and the bearing panel is arranged to be tilted upward in the direction from the loading station to the unloading station; Wherein, the first transfer part and the second transfer part are movably arranged on the carrying panel in a transverse direction.

6. The panel transfer system according to claim 5, characterized in that: The upper end surface of the bearing panel is provided with a slide rail, which extends in the transverse direction and passes through the loading station, the buffer station and the unloading station in sequence; The first transfer part comprises a first transfer plate, and a first slide groove slidably matched with the slide rail is provided at the bottom of the first transfer plate; The second transfer portion comprises a second transfer plate, and a second slide groove slidably matched with the slide rail is formed at the bottom of the second transfer plate.

7. The panel transfer system according to claim 6, characterized in that: The plate transfer system further includes a driving device, which includes: A servo motor, the motor seat of which is arranged on the frame and corresponds to the buffer station, and the output shaft of which is arranged in the longitudinal direction; and The gear rack transmission structure includes a gear and a rack meshing with each other. The gear is sleeved on the output shaft and rotates coaxially with the output shaft. The rack is arranged at the bottom of the second transfer plate and is arranged side by side with the second slide groove in the longitudinal direction.

8. The panel transfer system according to claim 1, characterized in that: The plate transfer system also includes a material picking robot, which is arranged on one side of the frame in the longitudinal direction and corresponds to the unloading station.

9. A body-in-white production line, characterized in that: A panel transfer system as claimed in any one of claims 1 to 8.

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