Frame flexible production system

Abstract

The present invention provides a flexible production system for vehicle frames, which includes a gantry assembly, a tilter, a support device, and a horizontal transfer machine; the gantry assembly includes a gantry and a welding robot that moves along the length direction of the gantry; the tilter includes two bases and a turntable that is liftably arranged on the bases; the turntables on the two bases face each other and can rotate synchronously around a horizontal axis parallel to the length direction of the gantry; the support device includes a frame and multiple groups of positioning jigs arranged at intervals on the frame; the multiple groups of positioning jigs can clamp multiple positions in the length direction of the vehicle frame; both ends of the frame are respectively connected to the two turntables and can be driven by the turntables to lift and / or rotate, so as to send the vehicle frame into the working range of the welding robot; the horizontal transfer machine has a fork for receiving the vehicle frame, and the fork can move along a direction perpendicular to the length direction of the gantry and pass through the gantry to send the vehicle frame onto the support device. The present invention can improve the forming quality of the vehicle frame and improve the production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of trailer production, and particularly to a flexible production system for a vehicle frame. Background Art

[0002] The vehicle frame of a semi-trailer is the main load-bearing structure of the semi-trailer, and the manufacturing quality of the vehicle frame directly determines the quality of the entire semi-trailer. Due to the large length of the vehicle frame, it is generally produced in a segmented manner. The vehicle frame is divided into at least two segmented vehicle frames. After each segmented vehicle frame is manufactured, the segmented vehicle frames are sequentially assembled and spot-welded and fixed, and then transported to a welding station to complete welding to form a complete vehicle frame. In the prior art, due to the heavy weight of the vehicle frame, the vehicle frame is often transported by a crane during transportation. During the transportation process, due to few lifting points, deflection deformation is likely to occur, resulting in separation between the segmented vehicle frames. In addition, the welding of the vehicle frame at the welding station largely depends on manual operation, and the welding accuracy is controlled by manual, resulting in poor welding consistency. Summary of the Invention

[0003] The purpose of the present invention is to provide a flexible production system for a vehicle frame to solve the problems that the vehicle frame is prone to deformation during transportation and the welding consistency of the vehicle frame is poor in the prior art during the production of the vehicle frame.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: A flexible production system for a vehicle frame includes a gantry assembly, a tilter, a support device, and a horizontal transfer machine; the gantry assembly includes a gantry and a welding robot arranged at the top of the gantry and movable along the length direction of the gantry; the tilter is arranged on one side of the gantry and includes two machine bases arranged at intervals and a turntable liftably arranged on the machine bases; the turntables on the two machine bases face each other, and the two turntables can rotate synchronously around a horizontal axis parallel to the length direction of the gantry; the support device includes a frame and a plurality of groups of positioning jigs arranged at intervals along the length direction of the frame; the plurality of groups of positioning jigs can clamp multiple positions in the length direction of the vehicle frame to clamp the vehicle frame on the support device; both ends of the frame are respectively connected to the two turntables and can be lifted and / or rotated by the turntables to send the vehicle frame into the working range of the welding robot; the horizontal transfer machine is arranged on the other side of the gantry and has a fork for receiving the vehicle frame, and the fork can move along a direction perpendicular to the length direction of the gantry and pass through the gantry to send the vehicle frame to the support device.

[0005] Preferably, the positioning fixture includes a positioning base, a positioning block located on the positioning base for carrying the vehicle frame, and a lateral pressing mechanism for pressing the two sides of the vehicle frame from both sides of the vehicle frame; the positioning base is installed on the frame; the lateral pressing mechanism has a lateral pressing block capable of moving in the width direction of the frame, the lower surface of the lateral pressing block can abut against the vehicle frame to press the vehicle frame, and the lower surface of the lateral pressing block is an inclined surface, and the included angle between the lower surface and the upper surface of the positioning block is within 15°.

[0006] Preferably, two limiting mechanisms for limiting the vehicle frame from both sides of the vehicle frame are further provided in at least two groups of the positioning fixtures; the limiting mechanism has a limiting block that can be lifted relative to the positioning base, the limiting block is located outside the positioning block in the width direction of the frame, and the inner side surface of the limiting block can abut against the vehicle frame to limit the vehicle frame, and the inner side surface of the limiting block is an inclined surface, and gradually moves away from the positioning block outward in the upward direction.

[0007] Preferably, the included angle between the inner side surface of the limiting block and the upper surface of the positioning block is greater than 90° and not greater than 105°.

[0008] Preferably, corresponding to each of the limiting mechanisms, a plurality of groups of mounting holes are provided on the positioning base, and the plurality of groups of mounting holes are spaced apart in the width direction of the frame; the limiting mechanism is selectively installed at one of the groups of mounting holes, and can adjust its position on the positioning base.

[0009] Preferably, the height position of the positioning block relative to the positioning base is adjustable.

[0010] Preferably, the frame includes a fixed frame and a lifting frame that is height-adjustably installed on the fixed frame, the length of the lifting frame is less than the length of the fixed frame, and the lifting frame is arranged at one end close to the fixed frame; both ends of the fixed frame are connected to the turntable; a plurality of groups of the positioning fixtures are arranged on both the fixed frame and the lifting frame.

[0011] Preferably, a guide post is provided on the lifting frame, and a rotatable guide wheel is adaptively provided on the fixed frame, and the guide wheel rolls against the guide post.

[0012] Preferably, the guide post has two mutually perpendicular side surfaces, and corresponding to each guide post, two groups of guide wheels are provided on the fixed frame, and each of the two guide wheels abuts against one side surface of the guide post.

[0013] Preferably, the positioning fixture is arranged on the lifting frame in a position-adjustable manner along the length direction of the lifting frame.

[0014] Preferably, the horizontal transfer machine includes a fixed transfer machine base and a lifting transfer machine base. Forks are provided on both the fixed transfer machine base and the lifting transfer machine base, and the height position of the forks on the lifting transfer machine base is adjustable; the lifting transfer machine base is opposite to the lifting frame in position.

[0015] Preferably, one end of the gantry exceeds the indexing machine in the length direction, and a material placing table for placing vehicle frame accessories is arranged at the top of the exceeding part; the gantry assembly further includes a handling robot, which is movably arranged on the top of the gantry along the length direction of the gantry, and can grab the vehicle frame accessories in the material placing table and assemble them onto the vehicle frame.

[0016] As can be seen from the above technical solutions, the present invention has at least the following advantages and positive effects: In the present invention, the horizontal transfer machine is used to transfer the vehicle frame, which can receive the vehicle frame and horizontally transfer it from the previous process to the support device, and then the indexing machine drives the support device to send the vehicle frame to the welding robot to complete the welding of the vehicle frame. The whole working process adopts automatic control to form flexible production, reduces the dependence on manual labor, and improves the consistency of vehicle frame welding. When the vehicle frame is transferred by the horizontal transfer machine and clamped by the support device, it can be supported at multiple points in the length direction, avoiding the flexible deformation of the vehicle frame before welding, effectively ensuring the dimensional accuracy of the vehicle frame, and improving the forming quality of the vehicle frame. The horizontal transfer machine, the gantry assembly and the indexing machine are arranged along the width direction of the vehicle frame, and the moving path of the vehicle frame during transfer is along its width direction, which can shorten the logistics path, reduce the transfer time, and improve the production efficiency. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a preferred embodiment of the vehicle frame flexible production system of the present invention.

[0018] Figure 2 is a schematic structural diagram of another view direction of a preferred embodiment of the vehicle frame flexible production system of the present invention.

[0019] Figure 3 is a schematic structural diagram of the gantry assembly in a preferred embodiment of the vehicle frame flexible production system of the present invention.

[0020] Figure 4 is a schematic structural diagram of the indexing machine and the support device in a preferred embodiment of the vehicle frame flexible production system of the present invention.

[0021] Figure 5 is a schematic diagram of the state when the support device bears the vehicle frame in a preferred embodiment of the vehicle frame flexible production system of the present invention.

[0022] Figure 6 is a schematic diagram of the principle of the positioning fixture clamping the vehicle frame in a preferred embodiment of the vehicle frame flexible production system of the present invention.

[0023] Figure 7 It is a schematic structural diagram of the lifting frame in the preferred embodiment of the flexible production system for the vehicle frame of the present invention.

[0024] Figure 8 It is a schematic structural diagram of the connection structure between the fixed frame and the lifting frame in the preferred embodiment of the flexible production system for the vehicle frame of the present invention.

[0025] Figure 9 It is a schematic structural diagram of the horizontal transfer machine in the preferred embodiment of the flexible production system for the vehicle frame of the present invention.

[0026] Explanation of reference numerals: 1. Gantry assembly; 11. Gantry; 111. Top beam; 112. Column; 114. Material placement table; 115. Slide rail; 12. Welding robot; 13. Handling robot; 2. Positioner; 21. Machine base; 22. Turntable; 3. Support device; 31. Frame; 311. Fixed frame; 312. Lifting frame; 3121. Mounting plate; 3122. Track; 313. Servo motor; 314. Screw lift; 315. Guide post; 316. Guide wheel assembly; 3161. Guide wheel seat; 3162. Guide wheel; 32. Positioning fixture; 321. Positioning base; 322. Positioning block; 323. Lateral pressing block; 3231. Lower surface; 324. Limit block; 3241. Inner side surface; 4. Horizontal transfer machine; 41. Fixed transfer machine base; 42. Lifting transfer machine base; 421. Base; 422. Fork mounting seat; 43. Fork; 431. Fork arm; 60. Vehicle frame; 601. Longitudinal beam; 6011. Wing plate; 6012. Web. Detailed implementation manners

[0027] Typical implementation manners reflecting the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different implementation manners, all of which do not depart from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0028] The flexible production system for the vehicle frame of the present invention is applicable to welding the assembled trailer vehicle frame. Among them, the vehicle frame is divided into at least two segments, which are respectively manufactured and then assembled along the length direction. The vehicle frame is first assembled and spot-welded by the previous process equipment, and then the assembled vehicle frame is taken over by the flexible production system for the vehicle frame of the present invention and welded.

[0029] Refer to Figure 1 and Figure 2, the flexible production system of the vehicle frame in this embodiment mainly includes a gantry assembly 1, a turntable 2, a support device 3, and a horizontal transfer machine 4. A welding robot 12 is arranged on the gantry assembly 1. The support device 3 is used to support and clamp the vehicle frame 60 during welding. The turntable 2 drives the support device 3 to adjust its position and attitude to achieve position-changing welding. The horizontal transfer machine 4 automatically horizontally transfers the vehicle frame 60 from the previous process to the support device 3 transversely.

[0030] The following is a specific introduction one by one.

[0031] Refer to Figure 3 , the gantry assembly 1 includes a gantry 11, a welding robot 12 and a handling robot 13 arranged on the top of the gantry 11 and movable along the length direction of the gantry 11. The main structure of the gantry 11 is composed of a top beam 111 and three columns 112 supporting the top beam 111. The three columns 112 are spaced apart along the length direction of the top beam 111 and supported below the top beam 111 to Figure 3 Taking the view direction as a reference, there is a relatively large interval between the middle column 112 and the left column 112, and this interval is greater than the length of the vehicle frame 60 for the vehicle frame 60 to pass through. There is a relatively small interval between the right column 112 and the middle column 112. A loading table 114 is provided on the top beam 111 near the right column 112. Frame accessories such as spring brackets and drawbars can be placed on the loading table 114. A slide rail 115 for the movement of the welding robot 12 and the handling robot 13 is provided on the top beam 111 along its length direction.

[0032] Refer to Figure 4 , the turntable 2 includes two machine bases 21 arranged at intervals and a turntable 22 arranged on the machine bases 21 in a liftable manner. The turntables 22 on the two machine bases 21 face each other, and the two turntables 22 can rotate synchronously around a horizontal axis. Refer to Figure 1 and Figure 2 , the turntable 2 is arranged on one side of the gantry 11. The interval direction of the two machine bases 21 of the turntable 2 is consistent with the length direction of the gantry 11. The interval between the two machine bases 21 is less than the length of the gantry 11. The positions of the two machine bases 21 roughly correspond to the positions of the two columns 112 with a relatively large interval in the gantry 11. The horizontal rotation axis of the turntable 2 is parallel to the length direction of the gantry 11.

[0033] Refer to Figures 4 to 6 , the support device 3 includes a frame 31 and multiple groups of positioning jigs 32 arranged at intervals along the length direction of the frame 31. The multiple groups of positioning jigs 32 can clamp multiple positions in the length direction of the vehicle frame 60, and clamp the vehicle frame 60 on the support device 3. The two ends of the frame 31 are respectively connected to the two turntables 22, and can be driven by the turntables 22 to lift and / or rotate, so as to send the vehicle frame 60 into the working range of the welding robot 12 and the handling robot 13.

[0034] The positioning fixture 32 includes a positioning base 321, a positioning block 322 located on the positioning base 321 for carrying the vehicle frame 60, and a lateral pressing mechanism for pressing the two sides of the vehicle frame 60 from both sides of the vehicle frame 60. Further, in some positioning fixtures 32, there are also two limiting mechanisms for limiting the vehicle frame 60 from both sides of the vehicle frame 60.

[0035] The positioning base 321 is perpendicular to the length direction of the frame 31. The two ends of the positioning base 321 are respectively installed on the frame 31, and the positioning base 321 protrudes from the surface of the frame 31. The positioning base 321 provides an installation position for the positioning block 322, the lateral pressing mechanism and the limiting mechanism.

[0036] In this embodiment, there are two positioning blocks 322 arranged at intervals along the length direction of the positioning base 321 (i.e., the width direction of the frame 31), which can respectively correspond to support the two longitudinal beams 601 of the vehicle frame 60.

[0037] The two lateral pressing mechanisms are symmetrically arranged along the longitudinal center line of the frame 31. Each lateral pressing mechanism includes a lateral pressing block 323 capable of moving along the width direction of the frame 31 and a driving member (not labeled in the figure) for driving the lateral pressing block 323 to move. The driving member can be, for example, a cylinder.

[0038] In the width direction of the frame 31, the lateral pressing mechanism is correspondingly located outside the positioning block 322. As Figure 6 shown, when the vehicle frame 60 is placed on the positioning block 322, the lateral pressing block 323 extends out and presses the vehicle frame 60 from the outside of the longitudinal beam 601 of the vehicle frame 60. The lower surface 3231 of the lateral pressing block 323 abuts against the wing plate 6011 of the longitudinal beam 601 of the vehicle frame 60, so as to clamp the wing plate 6011 between the lateral pressing block 323 and the positioning block 322. The lower surface 3231 of the lateral pressing block 323 is an inclined surface, and the included angle between it and the upper surface of the positioning block 322 is within 15°. Through the form of pressing with an inclined surface, there is a force gain effect, making the pressed workpiece more firm.

[0039] Preferably, the positioning block 322 can also be installed on the positioning base 321 with adjustable height through a lifting driving member (not shown in the figure). This adjustment of the positioning block 322 enables it to cooperate with the lateral pressing block 323 to meet the requirements of the vehicle frame 60 with different thicknesses and widths of the wing plates 6011. For relatively thin wing plates 6011, or when the wing plates 6011 are relatively narrow and the distance between the outer edge of the wing plate 6011 and the web 6012 of the longitudinal beam 601 is small, the positioning block 322 can be appropriately adjusted upward to ensure that when the lateral pressing block 323 extends laterally to abut against the wing plate 6011, there is still enough safety distance between the inner side surface of the lateral pressing block 323 and the web 6012 of the longitudinal beam 601.

[0040] The two limiting mechanisms are also symmetrically arranged along the longitudinal center line of the frame 31, and the interval between the two limiting mechanisms is adapted to the interval between the two longitudinal beams 601 of the vehicle frame 60; in the width direction of the frame 31, the limiting mechanisms are located outside the positioning blocks 322; in the length direction of the frame 31, the limiting mechanisms are arranged close to the positioning blocks 322. The limiting mechanism includes a limiting block 324 that can be lifted relative to the positioning base 321 and a driving member for driving the lifting of the limiting block 324, and the driving member can also be a cylinder. Continuing to refer to Figure 6 , after the vehicle frame 60 is pressed by the lateral pressing block 323, the limiting block 324 can be further driven to extend upward, so that the inner side surface 3241 of the limiting block 324 abuts against the wing plate 6011 of the longitudinal beam 601 of the vehicle frame 60, and the vehicle frame 60 is limited. The inner side surface 3241 of the limiting block 324 is an inclined surface, which gradually moves away from the positioning block 322 outward in the upward direction, and the included angle β between the inner side surface 3241 and the upper surface of the positioning block 322 is greater than 90° and not greater than 105°, that is, when abutting against the wing plate 6011 of the vehicle frame 60, the angle between the inner side surface 3241 and the outer side surface of the wing plate 6011 is within 15°, which can play a self-locking role in the width direction of the vehicle frame 60. During the process of the positioning fixture 32 rotating driven by the positioner 2 along with the frame 31, it can ensure that a strong clamping support is always formed on the vehicle frame 60.

[0041] The limiting mechanisms do not have to be provided on each set of positioning fixtures 32. Generally speaking, it is only necessary to have multiple sets of limiting mechanisms in the length direction of the frame 31.

[0042] Preferably, corresponding to each limiting mechanism, multiple sets of mounting holes are provided on the positioning base 321, and the multiple sets of mounting holes are spaced along the width direction of the frame 31; according to the spacing between the two longitudinal beams 601 in the vehicle frame 60, the limiting mechanism is selectively installed at one set of mounting holes, and the position on the positioning base 321 is adjusted, so that the limiting mechanism can adaptively meet the requirements of the vehicle frame 60 with different longitudinal beam 601 spacings, and the applicable range is improved.

[0043] Referring also to Figure 4 、 Figure 7 and Figure 8 , the frame 31 includes a fixed frame 311 and a lifting frame 312 that is height-adjustably installed on the fixed frame 311, and both ends of the fixed frame 311 are connected to the turntable 22 of the positioner 2.

[0044] The length of the lifting frame 312 is less than that of the fixed frame 311, and the lifting frame 312 is arranged near one end of the fixed frame 311 in the length direction; multiple sets of positioning jigs 32 are arranged in the length area of the fixed frame 311 where the lifting frame 312 is not installed, and multiple sets of positioning jigs 32 are also arranged on the lifting frame 312. Looking at the frame 31 as a whole, the positioning jigs 32 on the fixed frame 311 and the positioning jigs 32 on the lifting frame 312 are arranged at intervals along the length direction of the frame 31 as a whole.

[0045] Among them, the positioning jigs 32 on the fixed frame 311 are fixedly installed, and multiple sets of positioning jigs 32 are non-uniformly distributed, and the installation positions of the positioning jigs 32 on the fixed frame 311 are determined through pre-design. The positioning jigs 32 on the lifting frame 312 are movably installed. A track 3122 is arranged on the lifting frame 312 along the length direction, and each positioning jig 32 is driven by a driving member and is installed on the track 3122 with adjustable position. Through the arrangement of these positioning jigs 32, the support device 3 can be compatible with the clamping and positioning of vehicle frames 60 of different lengths.

[0046] Installation plates 3121 protrude from both ends of the lifting frame 312. The installation plates 3121 face the fixed frame 311, and a lifting drive mechanism and a guiding mechanism are provided between the installation plates 3121 and the fixed frame 311. In this embodiment, the lifting drive mechanism is composed of a servo motor 313 and a screw lift 314. Both the servo motor 313 and the screw lift 314 are installed on the fixed frame 311. The input shaft of the screw lift 314 is connected to the servo motor 313, and the output shaft of the screw lift 314 is connected to the installation plate 3121, and the lifting frame 312 is driven to lift relative to the fixed frame 311 under the power provided by the servo motor 313.

[0047] The guiding mechanism is arranged corresponding to the four corners of the lifting frame 312 to guide the lifting of the lifting frame 312 to make the lifting of the lifting frame 312 smoother. Each guiding mechanism includes a guiding column 315 and a matching guiding wheel assembly 316. The guiding column 315 is arranged on the installation plate 3121 and extends towards the fixed frame 311. In this embodiment, the cross-section of the guiding column 315 is generally rectangular. Corresponding to each guiding column 315, two sets of guiding wheel assemblies 316 are installed on the fixed frame 311, and the two sets of guiding wheel assemblies 316 respectively correspond to two adjacent sides (i.e., two mutually perpendicular sides) of the guiding column 315. Each guiding wheel assembly 316 includes a guide wheel seat 3161 installed on the fixed frame 311 and a guiding wheel 3162 rotatably installed on the guide wheel seat 3161, and the guiding wheel 3162 is in rolling contact with the side surface of the guiding column 315.

[0048] By adjusting the lifting frame 312 relative to the fixing frame 311, it can adapt to the clamping of a straight-back frame (that is, the frame 60 is located in the same plane in the length direction) and a gooseneck frame (the frame 60 has a height difference in the length direction).

[0049] See also Figure 1 and Figure 9 , the horizontal transfer machine 4 and the positioner 2 are arranged on both sides of the width direction of the gantry 11. Corresponding to the fixed frame 311 and the lifting frame 312 in the support device 3, in order to cooperate with the transfer of different types of frames 60, the horizontal transfer machine 4 includes a fixed transfer machine seat 41 and a lifting transfer machine seat 42. The fixed transfer machine seat 41 and the lifting transfer machine seat 42 are arranged at intervals along the length direction of the gantry 11. The lifting transfer machine seat 42 includes a base 421 and a fork mounting seat 422 that can be raised and lowered relative to the base 421. In the width direction of the gantry 11, the position of the fixed transfer machine seat 41 corresponds to the area of the fixed frame 311 where the lifting frame 312 is not installed, and the position of the lifting transfer machine seat 42 is opposite to the position of the lifting frame 312.

[0050] Forks 43 are arranged on both the fixed transfer machine base 41 and the lifting transfer machine base 42. The height position of the forks 43 on the fixed transfer machine base 41 is constant, while the forks 43 on the lifting transfer machine base 42 are arranged on the fork mounting base 422 and can be adjusted in height to match the height of the lifting frame 312. When the frame 60 is transferred, the forks 43 on the fixed transfer machine base 41 and the lifting transfer machine base 42 move synchronously.

[0051] The fork 43 can move in a direction perpendicular to the length of the gantry 11, and when moving in a direction away from the gantry 11 and the positioner 2, it can dock with the previous process and receive the frame 60 thereon. Then it moves toward the gantry 11 and the positioner 2, and passes through the gantry 11 to deliver the frame 60 to the support device 3 at the positioner 2.

[0052] Along the length direction of the gantry 11 , the fork 43 includes a plurality of spaced-apart fork arms 431 , and each fork arm 431 is staggered with each positioning fixture 32 on the supporting device 3 .

[0053] The working process of the vehicle frame flexible production system of this embodiment is roughly as follows:

[0054] After the previous process completes the assembly of the frame 60, the fork 43 of the horizontal transfer machine 4 extends outward and cooperates with the frame conveying roller of the previous process to transfer the frame 60. After the fork 43 secures the frame 60, it moves in the opposite direction through the gantry 11 to transfer the frame 60 to the top of the support device 3. At this time, the support device 3 has been pre-lowered to a specified height that matches the height of the fork 43 by the positioner 2.

[0055] After the forklift forks 43 stop moving, the positioner 2 drives the support device 3 to lift upward, so that the positioning block 322 of the positioning fixture 32 contacts the wing plate 6011 of the longitudinal beam 601 of the vehicle frame 60 and drives the vehicle frame 60 to continue to lift upward for a certain distance until the vehicle frame 60 is separated from the surface of the forklift forks 43. Then, the forklift forks 43 retract to the other side of the gantry 11. The vehicle frame 60 carried on the positioning block 322 is further pressed by the lateral pressing block 323 and limited by the limiting block 324.

[0056] After the vehicle frame 60 is positioned on the support device 3, it is lifted by the positioner 2 into the working range of the welding robot 12. The welding robot 12 performs full-weld welding on the assembly welds of the vehicle frame 60. After welding one side of the vehicle frame 60, the positioner 2 drives the support device 3 to rotate and weld other sides of the vehicle frame 60 to ensure the overall strength of the vehicle frame 60.

[0057] If other vehicle frame accessories need to be assembled onto the vehicle frame 60, when the vehicle frame 60 reaches the working range of the welding robot 12, the handling robot 13 first grabs the vehicle frame accessories on the material placement table 114, then walks along the gantry 11 to the predetermined position, and assembles the vehicle frame accessories to the designated position on the vehicle frame 60. During assembly, the welding robot 12 is linked to weld and reinforce the assembled vehicle frame accessories.

[0058] After the production of the vehicle frame 60 is completed, the AGV cart can travel under the support device 3 to pick up the vehicle frame 60 and then be transported away by the AGV cart.

[0059] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A flexible production system for a vehicle frame, characterized in that Comprising: A gantry assembly, including a gantry and a welding robot arranged at the top of the gantry and movable along the length direction of the gantry; A positioner, arranged on one side of the gantry, including two spaced bases and a turntable liftably arranged on the bases; the turntables on the two bases face each other, and the two turntables can rotate synchronously around a horizontal axis parallel to the length direction of the gantry; A support device, including a frame and multiple groups of positioning jigs arranged at intervals along the length direction of the frame; the frame includes a fixed frame and a lifting frame height-adjustably installed on the fixed frame, the length of the lifting frame is less than the length of the fixed frame, and the lifting frame is arranged at one end close to the fixed frame; both ends of the fixed frame are connected to the turntable; multiple groups of the positioning jigs are arranged on both the fixed frame and the lifting frame, and the multiple groups of positioning jigs can clamp multiple positions in the length direction of the vehicle frame to clamp the vehicle frame on the support device; the positioning jig includes a positioning base, a positioning block located on the positioning base for carrying the vehicle frame, and a lateral pressing mechanism for pressing both sides of the vehicle frame from both sides of the vehicle frame; the positioning base is installed on the frame; the height position of the positioning block relative to the positioning base is adjustable; the lateral pressing mechanism has a lateral pressing block capable of moving along the width direction of the frame, and the lower surface of the lateral pressing block can abut against the wing plate of the longitudinal beam of the vehicle frame to press the vehicle frame; the lower surface of the lateral pressing block is an inclined surface and forms an angle with the upper surface of the positioning block; both ends of the frame are respectively connected to the two turntables and can be driven by the turntables to lift and / or rotate, so as to send the vehicle frame into the working range of the welding robot; two limiting mechanisms for limiting the vehicle frame from both sides of the vehicle frame are also provided in at least two groups of the positioning jigs; the limiting mechanism has a limiting block capable of lifting relative to the positioning base, the limiting block is located outside the positioning block in the width direction of the frame, and the inner side surface of the limiting block can abut against the vehicle frame to limit the vehicle frame, and the inner side surface of the limiting block is an inclined surface and gradually moves away from the positioning block outward in the upward direction; A horizontal transfer machine, arranged on the other side of the gantry, having a fork for receiving the vehicle frame, and the fork can move along a direction perpendicular to the length direction of the gantry and pass through the gantry to send the vehicle frame to the support device.

2. The flexible production system for vehicle frames according to claim 1, characterized in that, The angle between the lower surface of the lateral pressing block and the upper surface of the positioning block is within 15°.

3. The frame flexible production system according to claim 1, characterized in that The angle between the inner side surface of the limiting block and the upper surface of the positioning block is greater than 90° and not greater than 105°.

4. The flexible production system for vehicle frames according to claim 1, characterized in that Corresponding to each of the limiting mechanisms, multiple groups of mounting holes are provided on the positioning base, and the multiple groups of mounting holes are spaced apart along the width direction of the frame; The limiting mechanism is selectively installed at one group of the mounting holes, and can adjust its position on the positioning base.

5. The flexible production system for vehicle frames according to claim 1, wherein Guide columns are provided on the lifting frame, and rotatable guide wheels are adaptively provided on the fixed frame, and the guide wheels rollingly abut against the guide columns.

6. The frame flexible production system according to claim 5, characterized in that The guide post has two mutually perpendicular side surfaces. Corresponding to each guide post, two sets of guide wheels are provided on the fixed frame, and each of the two guide wheels abuts against one side surface of the guide post.

7. The frame flexible production system according to claim 1, characterized in that, The positioning fixture is arranged on the lifting frame in a position-adjustable manner along the length direction of the lifting frame.

8. The flexible production system for vehicle frames according to claim 1, characterized in that, The horizontal transfer machine includes a fixed transfer machine base and a lifting transfer machine base. Forks are provided on both the fixed transfer machine base and the lifting transfer machine base, and the height position of the forks on the lifting transfer machine base is adjustable; the lifting transfer machine base is opposite to the lifting frame in position.

9. The flexible production system for vehicle frames according to any one of claims 1 to 4, characterized in that, One end of the gantry extends beyond the turntable in the length direction, and a material placing table for placing vehicle frame accessories is arranged at the top of the extended part. The gantry assembly further includes a handling robot. The handling robot is movably arranged on the top of the gantry along the length direction of the gantry, and can grab the vehicle frame accessories in the material placing table and assemble them onto the vehicle frame.

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