Car body transfer system suitable for multi-model production

Abstract

The present invention discloses a vehicle body transfer system suitable for the production of multiple vehicle models, comprising a universal hanger (1), a hanger arm rotating device (2) and a guide pin rod (6); the universal hanger (1) comprises a top frame (11), a column (12), a rotating support arm assembly (13), a fixed support arm (14) and a bottom frame (15); the column and the top frame constitute a hanger body, the bottom frame is connected to the column, one or more groups of rotating support arm assemblies are arranged on the bottom frame, and multiple fixed support arms are installed at the bottom of the column; multiple guide pin rods are installed on the ground and located below the fixed support arm, and the column equipped with the fixed support arm is provided with a guide positioning slot (121), and the guide pin rod can be inserted into the guide positioning slot; the hanger arm rotating device comprises a rotating assembly and a base fine-tuning assembly, and the rotating support arm assembly is rotated and raised and lowered by the rotating assembly. The present invention can realize the lifting of vehicle bodies of multiple vehicle models through different combinations of fixed support arms and rotating support arms, and realize the bottom painting operation of multiple vehicle models on the same production line.

Description

Technical Field

[0001] The invention relates to a vehicle body automated processing equipment, and in particular to a vehicle body transfer system suitable for the production of multiple vehicle models. Background Art

[0002] The four major processes of automobile body in automobile factories are stamping, welding, painting and assembly. Among them, welding, painting and assembly processes all use skid conveying systems to realize the transportation of body assemblies during the production process. As the main carrier for conveying car bodies, the skid will also use different carrier methods in different process sections to realize logistics series in order to meet different process requirements. Generally, it is impossible to use a skid to the end, and the versatility is poor. In the PVC bottom gluing process in the painting workshop, if the car body is still carried on the skid through the production station, most of the bottom area of ​​the car is blocked and the fulcrum on the skid interferes with the automatic spraying robot or manual spray gun, and the car body cannot complete the operation requirements on the skid. In view of the above factors, the car body needs to replace the body carrier in this process section interface area, and transfer from the ground skid to the aerial body hanger to enter the bottom glue spraying process. The body transfer system is a special equipment for transferring the car body from the ground to the air or from the air back to the ground to complete this process section.

[0003] The special equipment for body transfer is mainly composed of hangers and supporting arms. Since the hangers and supporting arms are fixed structures and cannot be adjusted, combined or transformed, they have great limitations and cannot be used universally. Usually, an automobile factory only produces 1 to 2 platform products to achieve high production capacity and low cost. However, automobile factories often need to produce various models such as commercial vehicles, passenger cars, and small trucks. Especially for commercial vehicle manufacturers, due to the complexity of commercial vehicle products, the existing body transfer equipment is far from meeting the production needs of commercial vehicles, and cannot meet the flexible production requirements of bodies of different platforms and models.

[0004] At present, the existing technology of body transfer system for PVC bottom gluing station in painting workshop mainly includes the following types:

[0005] 1. Side lift and rocker hanger body transfer system

[0006] Please see attached Figure 1The side lift and rocker hanger body transfer system consists of 4 fixedly installed lifts 100, a rocker hanger 200, a roller bed 5, a body skid support pin 500, a skid 4, a support arm support pin 700, etc. The lifts 100 are in groups of two, and the motor drives the connecting rod to drive their own mechanical transmission devices to achieve synchronous lifting of the pallet, lift the body 3 off the skid 4, and the skid 4 pulls out the roller bed 5, and the rocker hanger 200 is lifted by the elevator to lift the body 3 on the lift 100. The large support arm of the rocker hanger 200 can swing, and the support point is a fixed structure. It is mainly suitable for production lines of a single model or several models with the same bottom process pin holes, and cannot meet the production of multiple products or models with large differences in bottom process pin holes.

[0007] 2. Fixed hanger body transfer system

[0008] Please see attached Figure 2 The fixed hanger body transfer system is composed of a fixed hanger 400, a sled 4, a roller bed 5 and a guide rod 300. When transferring a body, the fixed hanger 400 is first lowered to the preset position of the transfer roller bed, the sled 4 brings the body 3 into the roller bed 5, and the fixed hanger 400 rises to support the body skirt and carry the body 3 to the next station, completing the whole set of actions. The large supporting arm and supporting point of the fixed hanger 400 are fixed structures, which are suitable for production lines with the same bottom plate structure and a relatively single model, and cannot meet the production of multiple products or models with different bottom plate structures. Summary of the invention

[0009] The object of the present invention is to provide a body transfer system suitable for the production of multiple vehicle models, which can lift the bodies of multiple vehicle models through different combinations of fixed support arms and rotating support arm assemblies, thereby realizing bottom painting operations of multiple vehicle models on the same production line.

[0010] The present invention is achieved in that:

[0011] A car body transfer system suitable for the production of multiple models, including a universal hanger, a boom rotating device and a guide pin rod; the universal hanger includes a top frame, a column, a rotating support arm assembly, a fixed support arm and a bottom frame; the upper ends of a plurality of columns are spaced apart and connected to both sides of the top frame to form a hanger body, the bottom frame is connected between two adjacent columns, and the bottom frame is horizontally located at the lower parts of both sides of the hanger body; one or more groups of rotating support arm assemblies are spaced apart and arranged on the bottom frame, and a plurality of fixed support arms are respectively installed at the bottom of a plurality of columns; a plurality of guide pin rods are respectively installed on the ground and are correspondingly located below a plurality of fixed support arms, and guide positioning slots are arranged in the columns on which the fixed support arms are installed, so that when the universal hanger is lowered, the guide pin rods can be inserted into the guide positioning slots of the columns; the boom rotating device includes a rotating assembly and a base fine-tuning assembly, the rotating assembly is installed on the top of the base fine-tuning assembly, and the base fine-tuning assembly is fixed on the ground below the rotating support arm assembly, so that when the universal hanger is lowered, the rotating support arm assembly can be connected to the rotating assembly and rotated and lifted through the rotating assembly.

[0012] The rotating support arm assembly comprises a nut, a spring washer, a locking sleeve, a locking screw, a locking claw, a rotating support arm bracket, a support block and a rotating ear; the locking claw is fixed to the bottom of the locking sleeve, the locking sleeve is sleeved on the movable shaft at the top of the rotating support arm bracket and is locked by the locking screw, the locking screw passes through the locking sleeve and is tightened on the movable shaft; the spring washer is sleeved on the movable shaft and is locked by the nut so that the spring washer is pressed against the locking sleeve; the support block is installed on one side of the bottom of the rotating support arm bracket, the rotating ear is arranged at the lower end of the rotating support arm bracket and can be matched and connected with the rotating assembly; a supporting mounting sleeve is installed on the base frame, a sliding sleeve is installed in the supporting mounting sleeve, the movable shaft passes through the sliding sleeve, and the movable shaft can be lifted and lowered along the axial direction of the sliding sleeve and relatively rotated.

[0013] The support installation sleeve is provided with a limit block, and the locking claw is provided with a plurality of limit grooves. When the movable shaft rises along the axial direction of the sliding sleeve, the limit block can be matched and inserted into one of the limit grooves.

[0014] The rotating assembly includes a micro switch mounting plate, a reduction motor, a rotating sleeve, a reduction motor mounting frame and a micro switch; the rotating sleeve is matched and connected to the output shaft of the reduction motor and rotates synchronously, and a positioning groove is provided on the rotating sleeve. The rotating ear of the rotating support arm assembly can be matched and embedded in the positioning groove, so that the rotating ear of the rotating support arm assembly can rotate synchronously with the rotating sleeve; the micro switch mounting plate is installed on the reduction motor mounting frame, and the micro switch is screwed on the micro switch mounting plate.

[0015] The rotation positions of the rotating sleeve through the reduction motor include 0°, 90°, 180° and 270°, that is, the positions at which the rotating support arm assembly can rotate are 0°, 90°, 180° and 270°.

[0016] The positioning groove of the rotating sleeve is in a cross-shaped structure, and the rotating ear of the rotating support arm assembly is in a straight-line structure.

[0017] The base fine-tuning assembly comprises a reduction motor mounting base, a fine-tuning base and a first mounting foot; the reduction motor mounting frame of the rotating assembly is fixed on the reduction motor mounting base; an X-direction slot is provided at the bottom of the reduction motor mounting base, and a Y-direction slot is provided at the top of the fine-tuning base; the reduction motor mounting base is mounted on the fine-tuning base, the X-direction slot and the Y-direction slot are cross-shaped and enable the reduction motor mounting base and the fine-tuning base to move horizontally relative to each other; the fine-tuning base is fixedly mounted on the ground through the first mounting foot and is lifted up and down in the Z direction.

[0018] The guide pin rod comprises a pin rod, a top screw, a bracket and a second mounting foot; the pin rod is installed on the bracket through a plurality of top screws, and the plurality of top screws respectively tighten the pin rod so that the pin rod can move horizontally on the bracket and can be inserted into the guide positioning slot hole of the column; the bracket is fixedly installed on the ground through the second mounting foot and can be lifted and lowered in the Z direction.

[0019] The upper end of the pin rod is a conical structure.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention is provided with a rotating support arm assembly, so that the support block can rotate in the XY horizontal plane to form a rotating support arm, and form a variety of lifting structures with no less than four supporting points with the fixed support arm to meet the lifting of different models on the same production line.

[0022] 2. The present invention is provided with a rotating assembly that can be controlled by a PLC system, which can constrain the descent and rotation of the rotating support arm assembly, thereby driving the rotating support arm to a preset position, realizing fully automatic conversion of the support point combination, thereby meeting the body transfer requirements.

[0023] 3. Since the present invention is provided with a guide pin rod and a base fine-tuning assembly, the coarse positioning and fine positioning of the universal hanger can be achieved through lateral and longitudinal adjustments, thereby ensuring the accuracy of the lifting stroke of the universal hanger.

[0024] The present invention can realize the lifting of multiple vehicle body types by forming different supporting point combinations through fixed supporting arms and automatically changing rotating supporting arm assemblies to meet the needs of vehicle body transfer, thereby realizing the bottom painting operation of multiple vehicle types on the same production line, meeting the production requirements of intelligence, flexibility, safety and reliability, and improving production efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the prior art side jacking machine and rocker arm type hanger body transfer system;

[0026] Figure 2 It is a side view fixed hanger body transfer system of the prior art;

[0027] Figure 3 It is a front view of the vehicle body transfer system of the present invention applicable to the production of multiple vehicle models;

[0028] Figure 4 It is a side view of the vehicle body transfer system of the present invention applicable to the production of multiple vehicle models;

[0029] Figure 5 It is a stereogram of a universal hanger in a vehicle body transfer system suitable for production of multiple vehicle models of the present invention;

[0030] Figure 6 It is a front view of a rotating support arm assembly in a vehicle body transfer system suitable for production of multiple vehicle models of the present invention;

[0031] Figure 7 It is a three-dimensional diagram of the boom rotating device in the vehicle body transfer system suitable for the production of multiple vehicle models of the present invention;

[0032] Figure 8 It is a cross-sectional view of a boom rotating device in a vehicle body transfer system suitable for production of multiple vehicle models of the present invention;

[0033] Fig. 9 It is a front view of a guide pin rod in a vehicle body transfer system suitable for production of multiple vehicle models of the present invention;

[0034] Fig.10 It is a state change diagram of the rotating support arm assembly when the universal hanger is raised and lowered in the body transfer system suitable for the production of multiple models of vehicles of the present invention;

[0035] Fig.11 This is a lifting state diagram of Embodiment 1 of the vehicle body transfer system applicable to the production of multiple vehicle models of the present invention;

[0036] Fig.12 This is a lifting state diagram of Embodiment 2 of the vehicle body transfer system applicable to the production of multiple vehicle models of the present invention;

[0037] Fig.13 It is a lifting state diagram of Example 3 of the body transfer system of the present invention that is applicable to the production of multiple vehicle models.

[0038] In the figure: 100 lift, 200 rocker hanger, 300 guide rod, 400 fixed hanger, 500 body skid support pin, 700 support arm support pin, 1 universal hanger, 11 top frame, 12 column, 121 guide positioning slot, 13 rotating support arm assembly, 131 nut, 132 spring washer, 133 locking sleeve, 134 locking screw, 135 locking claw, 1351 limit slot, 136 rotating support arm bracket, 1361 movable shaft, 137 support block, 138 rotating ear, 14 fixed support arm, 15 bottom frame, 151 support mounting sleeve, 152 sliding sleeve, 153 limit block, 2 suspension arm rotating device, 21 micro switch mounting plate, 22 reduction motor, 23 rotating sleeve, 231 positioning slot, 24 reduction motor mounting frame, 25 micro switch, 26 reduction motor mounting base, 261 X-direction slot, 27 fine adjustment base, 271 Y-direction slot, 28 first mounting foot, 3 car body, 4 skid, 5 roller bed, 6 guide pin rod, 61 pin rod, 611 conical structure, 62 top screw, 63 bracket, 64 second mounting foot, 7 support point. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] Please see attached Figure 3 and attached Figure 4 , a body transfer system suitable for the production of multiple models, including a universal hanger 1, a boom rotating device 2 and a guide pin rod 6; see attached Figure 5 The universal hanger 1 includes a top frame 11, a column 12, a rotating support arm assembly 13, a fixed support arm 14 and a bottom frame 15; the upper ends of a plurality of columns 12 can be connected to both sides of the top frame 11 at intervals by means of screw connection or the like to form a hanger body, and the bottom frame 15 is connected between two adjacent columns 12, and the bottom frame 15 is horizontally located at the lower parts of both sides of the hanger body; one or more groups of rotating support arm assemblies 13 are respectively arranged at intervals on the bottom frame 15, and a plurality of fixed support arms 14 can be respectively installed at the bottom of the column 12 by means of welding or the like. Preferably, the rotating support arm assembly 13 and the fixed support arm 14 can be arranged at intervals to facilitate the formation of different A support point combination; a plurality of guide pins 6 are respectively installed on the ground and are correspondingly located below a plurality of fixed supporting arms 14, and a guide positioning slot 121 is provided in the column 12 on which the fixed supporting arms 14 are installed, so that when the universal hanger 1 is lowered, the guide pins 6 can be inserted into the guide positioning slot 121 of the column 12; the boom rotating device 2 includes a rotating component and a base fine-tuning component, the rotating component is installed on the top of the base fine-tuning component, and the base fine-tuning component is fixed to the ground below the rotating supporting arm component 13, so that when the universal hanger 1 is lowered, the rotating supporting arm component 13 can be connected with the rotating component and rotated and lifted through the rotating component.

[0041] Please see attached Figure 6The rotating support arm assembly 13 includes a nut 131, a spring washer 132, a locking sleeve 133, a locking screw 134, a locking claw 135, a rotating support arm bracket 136, a support block 137 and a rotating ear 138; the locking claw 135 is fixed to the bottom of the locking sleeve 133, preferably, the locking sleeve 133 and the locking claw 135 can be connected by a weld, the locking sleeve 133 is sleeved on the movable shaft 1361 at the top of the rotating support arm bracket 136 and is locked by the locking screw 134, the locking screw 134 passes through the locking sleeve 133 and is tightened on the movable shaft 1361; the spring washer 132 is sleeved on the movable shaft 1361 and is locked by the nut 131, so that the spring washer 132 is pressed against the locking sleeve 133, which plays a buffering and The function of fixing is that the support block 137 is installed on the bottom side of the rotating support arm bracket 136, and the support block 137 serves as a support point of the vehicle body 3. The rotating ear 138 is arranged at the lower end of the rotating support arm bracket 136 and can be matched and connected with the rotating component. Preferably, the support block 137 and the rotating ear 138 can be fixed to the rotating support arm bracket 136 by screwing or the like. A support mounting sleeve 151 is installed on the base frame 15. Preferably, the support mounting sleeve 151 can be welded and fixed to the base frame 15. The sliding sleeve 152 can be installed in the support mounting sleeve 151 by screwing or the like. The movable shaft 1361 passes through the sliding sleeve 152. The movable shaft 1361 can be raised and lowered along the axial direction of the sliding sleeve 152 and relatively rotated, so that the support block 137 can rotate.

[0042] The limit block 153 is installed on the support mounting sleeve 151 by means of screw connection or the like, and a plurality of limit grooves 1351 are provided on the locking claw 135. When the movable shaft 1361 rises along the axial direction of the sliding sleeve 152, the limit block 153 can be matched and inserted into one of the limit grooves 1351, thereby limiting the relative rotation between the movable shaft 1361 and the base frame 15. The limit grooves 1351 can be arranged at equal intervals of 90° to ensure that the rotating arm assembly 13 can still be inserted into the limit groove 1351 for limitation after rotating 90°, 180° and 270°.

[0043] Please see attached Figure 7 and attached Figure 8The rotating assembly includes a micro switch mounting plate 21, a reduction motor 22, a rotating sleeve 23, a reduction motor mounting bracket 24 and a micro switch 25; the rotating sleeve 23 is matched and connected with the output shaft of the reduction motor 22 through a flat key and rotates synchronously, and the reduction motor 22 can be externally connected to the PLC system, and the PLC system can control the switch and rotation position of the reduction motor 22 according to the vehicle model information, so as to achieve the rotation of each rotating arm assembly 13 and use them in combination; a positioning groove 231 is provided on the rotating sleeve 23, and a rotating ear 138 of the rotating arm assembly 13 It can be matched and embedded in the positioning groove 231, so that the rotating ear 138 of the rotating arm assembly 13 can rotate synchronously with the rotating sleeve 23, so that the rotating assembly controls the rotation of the rotating arm assembly 13, and the rotating arm assembly 13 can move up and down relative to the base frame 15 under its own gravity and the support constraint of the rotating sleeve 23; the microswitch mounting plate 21 can be screwed on the reduction motor mounting frame 24 through three sleeves, and the microswitch 25 is screwed on the microswitch mounting plate 21. The purpose of limiting the limit position can be achieved through the microswitch 25 according to actual use requirements.

[0044] Preferably, the rotating sleeve 23 through the reduction motor 22 includes 0°, 90°, 180° and 270°, that is, the rotating arm assembly 13 can rotate at 0°, 90°, 180° and 270°, and the PLC system outputs a control signal to drive the reduction motor 22 to drive the rotating sleeve 23 to rotate the corresponding angle. Preferably, the reduction motor 22 can be equipped with an encoder to achieve precise control of the required forward and reverse rotation and stop position.

[0045] The positioning groove 231 is in a cross-shaped structure, and the rotating ear 138 of the rotating arm assembly 13 is in a straight-line structure, ensuring that the rotating ear 138 can be matched and embedded in the positioning groove 231 after rotating 90°, 180° or 270°.

[0046] The base fine-tuning assembly includes a reduction motor mounting base 26, a fine-tuning base 27 and a first mounting foot 28; the reduction motor mounting frame 24 of the rotating assembly is fixed to the reduction motor mounting base 26 by four bolts; the bottom of the reduction motor mounting base 26 is provided with an X-direction notch 261, and the top of the fine-tuning base 27 is provided with a Y-direction notch 271. The reduction motor mounting base 26 is installed on the fine-tuning base 27, and the X-direction notch 261 and the Y-direction notch 271 are cross-shaped and can be interlocked between the reduction motor mounting base 26 and the fine-tuning base 27. The rotating sleeve 23 is moved horizontally, so as to adjust the horizontal position of the rotating sleeve 23, so that the rotating ear 138 can accurately fall into the positioning groove 231 of the rotating sleeve 23; the fine-tuning base 27 is fixedly installed on the ground through the first mounting foot 28 and lifted up and down in the Z direction. Preferably, the upper end of the first mounting foot 28 passes through the fine-tuning base 27 and is fixed by a nut, and the lower end of the first mounting foot 28 is fixedly installed on the ground. The height of the fine-tuning base 27 can be adjusted by inserting the length of the first mounting foot 28 into the fine-tuning base 27, so as to adjust the height of the rotating sleeve 23. The centering accuracy between the rotating sleeve 23 and the rotating ear 138 can be improved by adjusting the X, Y, and Z axial directions, reducing the equipment processing accuracy, and facilitating on-site installation and debugging.

[0047] Please see attached Fig. 9 The guide pin 6 comprises a pin 61, a top screw 62, a bracket 63 and a second mounting foot 64; the pin 61 is mounted on the bracket 63 by a plurality of top screws 62, and the plurality of top screws 62 respectively press the pin 61, so that the pin 61 can move horizontally on the bracket 63 and can be accurately inserted into the guide positioning slot 121 of the column 12, thereby accurately adjusting the X-direction and Y-direction positions of the pin 61. After adjustment, ensure that the plurality of top screws 62 are locked. Preferably, four top screws 62 can be used to evenly press the pin 61 from four directions to keep it stable; the bracket 63 is fixedly mounted on the ground by the second mounting foot 64 and lifted in the Z direction. Preferably, the upper end of the second mounting foot 64 passes through the bracket 63 and is locked and fixed by a nut, and the lower end of the second mounting foot 64 is fixedly mounted on the ground by expansion bolts or the like. The height of the bracket 63 can be adjusted by the length of the second mounting foot 64 inserted into the bracket 63, thereby achieving the purpose of adjusting the height of the pin 61.

[0048] The upper end of the pin rod 61 is a conical structure 611, which can play a role of rough positioning guide when the universal hanger 1 descends, so that the pin rod 61 is inserted into the guide positioning slot 121 after being guided by the conical structure 611. When the universal hanger 1 continues to descend, the cylindrical part of the pin rod 61 is inserted into the guide positioning slot 121 to complete the precise positioning of the universal hanger 1.

[0049] The present invention is applicable to the vehicle body transfer system for the production of multiple vehicle models. The specific action flow when transferring the vehicle body is as follows:

[0050] The reader / writer installed at the station before the roller bed 5 reads the tag Tag installed on the skid 4. When the car body 3 with the skid 4 enters the roller bed 5, the clamping device on the roller bed 5 clamps the skid positioning beam to complete the precise positioning of the skid 4, thereby achieving the precise positioning of the car body 3 in the transfer system. After the universal hanger 1 arrives at the transfer station, the RFID system sends the car body data information stored in the tag Tag read by the reader / writer to the PLC system; the PLC system controls the rotation of the boom rotating device 2 according to the production control program of the corresponding car model preset in the database. The installation positions of the skid 4 and the roller bed 5 in the present invention on the production line are the same as those in the prior art, and can also be fine-tuned according to actual needs, which will not be repeated here.

[0051] Please see attached Fig.10 When the universal hanger 1 is lowered to make the base frame 15 at the height of position A, the pin 61 is inserted into the guide positioning slot 121 to realize the guide positioning of the universal hanger 1; when the universal hanger 1 continues to lower to make the base frame 15 at the height of position B, the rotating ear 138 falls into the positioning slot 231 of the rotating sleeve 23 and is in rigid contact; when the universal hanger 1 is further lowered to make the base frame 15 at the height of position C, due to the constraint of the rotating sleeve 23, the rotating arm assembly 13 remains unchanged at the previous height and always maintains contact with the rotating sleeve 23, while the movable shaft 1361 moves relatively upward in the sliding sleeve 152 along the axial direction of the movable shaft 1361, and the limit block 153 is disengaged from the limit slot 1351, and the PLC system controls the reduction motor 22 to drive the rotating ear 138 to rotate through the rotating sleeve 23, thereby realizing the rotation of the rotating arm assembly 13 required for lifting. According to different vehicle models, different rotating arm assemblies 13 and fixed arms 14 are selected for combination to form different support point combinations to play a lifting role on the vehicle body 3.

[0052] After the rotating arm assembly 13 rotates to the preset position, the universal hanger 1 rises, and the movable shaft 1361 moves relatively downward in the sliding sleeve 152 along the axial direction of the movable shaft 1361, so that the limit block 153 is matched and inserted into the limit groove 1351, and the locking claw 135 is locked with the base frame 15 to limit the rotation of the rotating arm assembly 13; the universal hanger 1 continues to rise so that the rotating ear 138 is separated from the rotating sleeve 23 and the universal hanger 1 is fully loaded, so that the vehicle body 3 is lifted to the specified height through the support block 137 and the fixed arm 14, and separated from the skid 4. The clamping device is opened, the roller bed 5 runs, and the empty skid 4 leaves the transfer station, thus completing the entire skid-changing hanger transfer process.

[0053] Since the length, skirt structure and bottom supporting position of different car models may be different, the supporting point positions may be different in front, back, top, bottom, left and right. Through different combinations of the rotating support arm assembly 13 and the fixed support arm 14 arranged at the bottom of the universal hanger 1, a supporting point combination suitable for the production of different car bodies can be formed. The supporting point combination corresponding to each car model can be preset in the PLC system for normal production process, for example:

[0054] In a certain automobile manufacturing enterprise, the vehicle types can be divided into categories ① to ⑨ according to the nature of the products produced. Each type of vehicle body 3 has similar body skirts and bottom support positions, and can use the same set of support point combinations. During production, after the PLC system classifies the vehicle model according to the vehicle body data information, it can control the corresponding rotating support arm assembly 13 to rotate to a preset position and form a corresponding support point combination with the fixed support arm 14, as shown in Table 1.

[0055] Table 1 Body data information and its corresponding support point combination

[0056] Serial number Support point combination form Model Body length Wheelbase 1 1# ① 2043mm 2 1# ② 4446mm 2683mm 3 1# ② 4446mm 2683mm 4 1# ② 4446mm 2683mm 5 2# ① 1945mm 6 2# ③ 4716mm 2742mm 7 2# ③ 4716mm 2742mm 8 2# ③ 4716mm 2742mm 9 2# ④ 4987mm 3233mm 10 2# ⑤ 6990mm 3205mm 11 3# ① 2360mm 12 3# ⑥ 4964mm 2956mm 13 3# ⑥ 4964mm 2956mm 14 3# ⑥ 4964mm 2956mm 15 3# ⑦ 5800mm 3290mm 16 3# ⑧ 6913mm 3925mm 17 4# ⑨ 5276mm 3233mm 18 5# ① 1666mm 19 5# ⑨ 5103mm 3305mm

[0057] Embodiment 1:

[0058] Please see attached Fig.11 The vehicle model No. ① of serial number 1 adopts two sets of fixed supporting arms 14 and two sets of front and rear rotating supporting arm assemblies 13 to form a lifting form with four supporting points 7 on each side.

[0059] Embodiment 2:

[0060] Please see attached Fig.12 The vehicle model No. ⑤ of serial number 10 adopts two sets of fixed supporting arms 14 and a set of rotating supporting arm assemblies 13 at the front to form a lifting form with three supporting points 7 on each side.

[0061] Embodiment 3:

[0062] Please see attached Fig.13 The vehicle model No. ⑤ of serial number 16 adopts two sets of fixed supporting arms 14 and a set of rotating supporting arm assemblies 13 in the middle to form a lifting form with three supporting points 7 on each side.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body transfer system suitable for the production of multiple vehicle models, characterized by: The invention comprises a universal hanger (1), a hanger arm rotating device (2) and a guide pin rod (6); the universal hanger (1) comprises a top frame (11), a column (12), a rotating support arm assembly (13), a fixed support arm (14) and a bottom frame (15); the upper ends of a plurality of columns (12) are connected to both sides of the top frame (11) at intervals to form a hanger body, the bottom frame (15) is connected between two adjacent columns (12), and the bottom frame (15) is horizontally located at the lower parts of both sides of the hanger body; one or more groups of rotating support arm assemblies (13) are respectively arranged at intervals on the bottom frame (15), and a plurality of fixed support arms (14) are respectively installed at the bottom of a plurality of columns (12); a plurality of guide pins (6) are arranged on the bottom of the ... The pin rods (6) are respectively installed on the ground and are correspondingly located below the plurality of fixed bracket arms (14). A guide positioning slot (121) is provided in the column (12) on which the fixed bracket arms (14) are installed, so that when the universal hanger (1) is lowered, the guide pin rod (6) can be inserted into the guide positioning slot (121) of the column (12); the arm rotating device (2) comprises a rotating assembly and a base fine adjustment assembly, the rotating assembly is installed on the top of the base fine adjustment assembly, and the base fine adjustment assembly is fixed on the ground below the rotating bracket arm assembly (13), so that when the universal hanger (1) is lowered, the rotating bracket arm assembly (13) can be connected to the rotating assembly and rotated and raised and lowered through the rotating assembly; The rotating support arm assembly (13) comprises a nut (131), a spring washer (132), a locking sleeve (133), a locking screw (134), a locking claw (135), a rotating support arm bracket (136), a support block (137) and a rotating ear (138); the locking claw (135) is fixed to the bottom of the locking sleeve (133); the locking sleeve (133) is sleeved on a movable shaft (1361) at the top of the rotating support arm bracket (136) and is locked by a locking screw (134); the locking screw (134) passes through the locking sleeve (133) and is tightened on the movable shaft (1361); the spring washer (132) is sleeved on the movable shaft (1361) The movable shaft (1361) is connected to the movable shaft (1361) and is locked by a nut (131), so that the spring washer (132) is pressed against the locking sleeve (133); the support block (137) is installed on one side of the bottom of the rotating support arm bracket (136); the rotating ear (138) is arranged at the lower end of the rotating support arm bracket (136) and can be matched and connected with the rotating component; a support mounting sleeve (151) is installed on the base frame (15), a sliding sleeve (152) is installed in the support mounting sleeve (151), the movable shaft (1361) passes through the sliding sleeve (152), and the movable shaft (1361) can be lifted and lowered along the axial direction of the sliding sleeve (152) and relatively rotated; The rotating assembly comprises a micro switch mounting plate (21), a reduction motor (22), a rotating sleeve (23), a reduction motor mounting frame (24) and a micro switch (25); the rotating sleeve (23) is matched and connected with the output shaft of the reduction motor (22) and rotates synchronously; a positioning groove (231) is provided on the rotating sleeve (23); a rotating ear (138) of the rotating support arm assembly (13) can be matched and embedded in the positioning groove (231), so that the rotating ear (138) of the rotating support arm assembly (13) can rotate synchronously with the rotating sleeve (23); the micro switch mounting plate (21) is mounted on the reduction motor mounting frame (24), and the micro switch (25) is screwed on the micro switch mounting plate (21).

2. The vehicle body transfer system suitable for production of multiple vehicle models according to claim 1 is characterized in that: The support installation sleeve (151) is provided with a limit block (153), and the locking claw (135) is provided with a plurality of limit grooves (1351). When the movable shaft (1361) rises along the axial direction of the sliding sleeve (152), the limit block (153) can be matched and inserted into one of the limit grooves (1351).

3. The vehicle body transfer system suitable for the production of multiple vehicle models according to claim 1 is characterized in that: The rotation positions of the rotating sleeve (23) through the reduction motor (22) include 0°, 90°, 180° and 270°, that is, the positions at which the rotating support arm assembly (13) can rotate are 0°, 90°, 180° and 270°.

4. The vehicle body transfer system suitable for production of multiple vehicle models according to claim 3 is characterized in that: The positioning groove (231) of the rotating sleeve (23) is in a cross-shaped structure, and the rotating ear (138) of the rotating arm assembly (13) is in a straight-line structure.

5. The vehicle body transfer system suitable for production of multiple vehicle models according to claim 1 is characterized in that: The base fine-tuning assembly comprises a reduction motor mounting base (26), a fine-tuning base (27) and a first mounting foot (28); the reduction motor mounting frame (24) of the rotating assembly is fixed on the reduction motor mounting base (26); an X-direction notch (261) is provided at the bottom of the reduction motor mounting base (26), and a Y-direction notch (271) is provided at the top of the fine-tuning base (27); the reduction motor mounting base (26) is mounted on the fine-tuning base (27), the X-direction notch (261) and the Y-direction notch (271) intersect in a cross shape so that the reduction motor mounting base (26) and the fine-tuning base (27) can move horizontally relative to each other; the fine-tuning base (27) is fixedly mounted on the ground via the first mounting foot (28) and is lifted up and down in the Z direction.

6. The vehicle body transfer system suitable for production of multiple vehicle models according to claim 1 is characterized in that: The guide pin rod (6) comprises a pin rod (61), a top screw (62), a bracket (63) and a second mounting foot (64); the pin rod (61) is mounted on the bracket (63) via a plurality of top screws (62), and the plurality of top screws (62) respectively press the pin rod (61) so that the pin rod (61) can move horizontally on the bracket (63) and can be inserted into the guide positioning slot (121) of the column (12); the bracket (63) is fixedly mounted on the ground via the second mounting foot (64) and can be lifted and lowered in the Z direction.

7. The vehicle body transfer system suitable for production of multiple vehicle models according to claim 6 is characterized by: The upper end of the pin rod (61) is a conical structure (611).

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