Seat frame jig for a vehicle seat and method of working thereof

Abstract

This invention relates to a seat frame fixture for automobile seats and its working method. The fixture comprises a flipping mechanism and a first and second platform mounted on the flipping mechanism. The flipping mechanism includes two vertical columns on both sides and rotating arms rotatably hinged to the two vertical columns. The first and second platforms are rotatably hinged between the free ends of the two rotating arms. A welding robot for welding components on the first or second platform is provided on one side of the flipping mechanism. This invention allows for the installation of corresponding components on the first and second platforms, forming a large assembly. This simplifies the current process of creating multiple sets of fixtures to complete an assembly, eliminates the hassle of repeated disassembly and assembly in the current production process, and greatly improves the efficiency of seat production.

Description

Technical fields:

[0001] This invention relates to an installation fixture for a car seat frame, and more particularly to a car seat frame jig and its working method. Background technology:

[0002] In modern welding production, the active promotion and use of tooling fixtures adapted to product structures not only improves product quality and reduces the labor intensity of workers, but also plays a crucial role in accelerating the mechanization and automation of welding production. However, to add more actuating functions and functional components to car seats, the sheet metal structure of the seat frame becomes complex, usually requiring multiple sets of tooling fixtures, as well as tooling for the front and back of the welding workpiece. Due to the varying welding times of individual parts, it is difficult to assemble a complete set of matching seat frames. Moreover, due to the complex curved surface structure of irregular sheet metal, it is very easy to shift during clamping, leading to problems such as changes in the position and size of the weld. Furthermore, after welding, the workpiece generally needs to be sent to a manual welding position for additional welding before being loaded onto a trolley and sent to the next process for assembly. This method not only increases the number of trolley turnovers but also increases the number of workers repeatedly handling the welded workpieces, making it impossible to complete all processes at once. This results in long production cycles, low production efficiency, and unstable product quality. Summary of the Invention:

[0003] The purpose of this invention is to provide a seat frame fixture for automobile seats and its working method. The seat frame fixture for automobile seats is reasonably designed, which is conducive to assembling and welding the main components of automobile seats on the first and second table surfaces, thereby improving production efficiency.

[0004] The present invention relates to a car seat frame fixture, characterized in that: it includes a flipping mechanism and a first table and a second table disposed on the flipping mechanism; the flipping mechanism includes two vertical columns on both sides and rotating arms respectively rotatably hinged to the two vertical columns on both sides, the first table and the second table are rotatably hinged between the free ends of the two rotating arms, and a welding robot for welding components on the first table or the second table is provided on one side of the flipping mechanism.

[0005] The first platform is equipped with a side plate positioning mechanism, a back square tube positioning mechanism, an upper tube rack assembly positioning mechanism, and a middle horizontal tube positioning mechanism;

[0006] The side plate positioning mechanism includes two sets of first stepped columns respectively located on the upper left and lower left sides of the first platform. These two sets of first stepped columns are used to position the side and bottom surfaces of the side plate. It also includes a first stepped positioning pin driven by a first cylinder to extend and retract into the first positioning hole of the side plate, and a second stepped positioning pin driven by a second cylinder to extend and retract into the second positioning hole of the side plate. The two sets of first stepped columns are respectively provided with a third positioning hole and a fourth positioning hole that allow the first stepped positioning pin and the second stepped positioning pin to be inserted accordingly.

[0007] The back square tube positioning mechanism includes two sets of second-step columns located on the middle right side and the lower right side of the first platform. These two sets of second-step columns are used to position the side and bottom surfaces of the back square tube. It also includes a third-step positioning pin driven by a third cylinder to extend and retract into the first positioning hole of the back square tube, and a fourth-step positioning pin driven by a fourth cylinder to extend and retract into the second positioning hole of the back square tube. The two sets of second-step columns are respectively provided with a fifth positioning hole and a sixth positioning hole that allow the third-step positioning pin and the fourth-step positioning pin to be inserted accordingly.

[0008] The upper pipe rack assembly includes an upper pipe rack and a first conduit welded and fixed on the upper pipe rack. The positioning mechanism of the upper pipe rack assembly includes two sets of third-step columns for supporting the first end of the first conduit. A first positioning block driven to extend and retract by a fifth cylinder is provided at the position opposite the third-step columns. The first positioning block is used to position and support the second end of the first conduit.

[0009] The middle horizontal tube positioning mechanism includes two sets of first V-shaped columns located in the middle of the first platform. The upper end face of the first V-shaped column is V-shaped, and the two ends of the middle horizontal tube abut against the inner side of the back square tube and the side plate.

[0010] Furthermore, the first platform is also provided with a left frame line positioning mechanism and a right frame line positioning mechanism. The left frame line positioning mechanism includes a second V-shaped post and a first V-shaped groove located on the first step post. The right frame line positioning mechanism includes a third V-shaped post and a second V-shaped groove located on the second step post.

[0011] Furthermore, a positioning mechanism for the seat belt support frame is provided on the upper right side of the first platform. The positioning mechanism for the seat belt support frame includes a third V-shaped post and a first flip-up pressure block placed directly above the third V-shaped post. The middle part of the seat belt support frame is supported above the V-shaped groove of the third V-shaped post. The first flip-up pressure block is used to press the seat belt support frame. The two ends of the seat belt support frame are respectively attached to the back square tube and the upper tube frame.

[0012] Furthermore, the aforementioned side plate is provided with a first channel for installing the second conduit, and the back square tube is provided with a second channel for installing the third conduit. The first platform is provided with a fourth stepped column for positioning the first end of the second conduit and supporting the first end of the third conduit. The first platform is provided with a first telescopic seat driven by a sixth cylinder at a position opposite to the fourth stepped column. The first telescopic seat is provided with a second positioning block for positioning the second or third conduit. The first telescopic seat is provided with a first baffle and a first pressure plate driven to telescopically extend and retract by a seventh cylinder, which is arranged opposite to the first baffle. A handrail mounting piece is provided between the first baffle and the first pressure plate, and the handrail mounting piece is close to the upper edge of the side plate or the back square tube.

[0013] Furthermore, the first flip-up pressure block is bent, the first end of the first flip-up pressure block is used to press the seat belt support frame line, the end of the second end of the first flip-up pressure block is hinged to the mounting base on the first platform, and the middle of the second end of the first flip-up pressure block is hinged to the free end of the telescopic rod of the eighth cylinder.

[0014] The working method of the seat frame fixture for automobile seats of the present invention is characterized in that:

[0015] The first step is to place the upper pipe rack assembly on the first platform so that the third step column supports the first end of the first conduit. At this time, the fifth cylinder works to drive the first positioning block to extend and insert into the second end of the first conduit, thereby achieving the support and positioning of the upper pipe rack assembly.

[0016] The second step involves placing the middle horizontal tube on the first V-shaped post, and then placing the side plate and the back square tube on the first stepped post. At this time, the first and second stepped positioning pins are inserted into the first, second, third, and fourth positioning holes respectively under the action of the first and second cylinders, thus achieving the installation and positioning of the side plate. Similarly, the third and fourth stepped positioning pins are inserted into the fifth and sixth positioning holes respectively under the action of the third and fourth cylinders, thus achieving the installation and positioning of the back square tube. At the same time, during the extension of the first, second, third, and fourth stepped positioning pins, the side plate and the back square tube are also pressed onto both ends of the upper tube rack and the middle horizontal tube.

[0017] The third step is to place the left frame line into the second V-shaped post and the first V-shaped groove on the first step post, and the right frame line into the third V-shaped post and the second V-shaped groove on the second step post, and ensure that the two ends of the left frame line are attached to the upper and lower parts of the side plate, and the two ends of the right frame line are attached to the upper and lower parts of the back square tube.

[0018] The fourth step is to place the seat belt support frame line on the third V-shaped post, and at the same time, the first flip-up pressure block directly above the third V-shaped post is rotated and pressed onto the seat belt support frame line, ensuring that both ends of the seat belt support frame line are respectively attached to the back square tube and the upper tube frame, thereby achieving the positioning of the seat belt support frame line.

[0019] Fifth step: Insert the second conduit into the first channel and the third conduit into the second channel. Drive the first telescopic seat and the second positioning block through the sixth cylinder to extend, so that the first ends of the second and third conduits are moved and limited by the fourth step column. The second ends of the second and third conduits are positioned by the second positioning block, thus achieving the positioning of the second and third conduits. At the same time, place the handrail mounting piece on the upper edge of the side plate and the back square tube. Under the limiting action of the first baffle and the first pressure plate, the handrail mounting piece is positioned.

[0020] In operation, the components on the first platform are manually installed and positioned at the front. Then, a flipping mechanism flips them to the rear. At this time, a welding robot located at the rear welds the bonding positions on the first platform. Simultaneously, corresponding components are installed on the second platform that has been moved to the front. After the components on the second platform are installed and the welding robot has also completed welding on the first platform at the rear, the flipping mechanism flips the first platform at the rear to the front for disassembling the workpiece and reinstalling new components. The second platform at the front is flipped to the rear, and the welding robot welds the bonding positions. After the welding on the second platform at the rear is completed and the first platform at the front is also installed, the flipping is repeated as before, and the aforementioned steps are repeated.

[0021] This invention allows for the installation of corresponding components on the first and second tabletops, each forming a large assembly. This simplifies the current process of creating multiple sets of fixtures to complete an assembly, eliminates the hassle of repeated disassembly and assembly during production, and greatly improves the efficiency of seat production.

[0022] The present invention will now be described in detail with reference to the accompanying drawings. Attached image description:

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 yes Figure 1 Side view;

[0025] Figure 3 It is a 3D view of the components installed on the first platform;

[0026] Figure 4 It is a 3D view of the assembled components installed on the first platform;

[0027] Figures 5-7 This is a three-dimensional view of the various mechanisms installed on the first platform (with all components removed; the three views are identical, but are divided into three views to avoid overly dense component numbers).

[0028] Figure 8 yes Figure 3 A three-dimensional view of the dismantling of individual institutions from another perspective;

[0029] Figure 9 yes Figure 8 A stereoscopic view from another perspective;

[0030] Figure 10 This is a three-dimensional view of the positioning mechanism for installing the second conduit on the side plate;

[0031] Figures 11-12 yes Figure 3 A partial view;

[0032] Figure 13 It is a 3D view of the components installed on the second platform;

[0033] Figure 14 yes Figure 13 A three-dimensional view from another perspective after some parts have been removed;

[0034] Figure 15 This is an exploded view of the components installed on the second platform;

[0035] Figures 16-17 yes Figure 14 A partial view;

[0036] Figure 18 This is a 3D view of the various mechanisms installed on the second platform;

[0037] Figure 19 This is a three-dimensional view of the side plate positioning mechanism. Detailed implementation method:

[0038] The present invention relates to a car seat frame fixture, comprising a flipping mechanism 1 and a first platform 2 and a second platform 3 disposed on the flipping mechanism; the flipping mechanism 1 comprises two vertical columns 4 on both sides and rotating arms 5 respectively rotatably hinged to the two vertical columns on both sides, the first platform 2 and the second platform 3 being rotatably hinged between the free ends of the two rotating arms 5, that is, one free end of the two rotating arms 5 is rotatably connected to the first platform 2, and the other free end of the two rotating arms 5 is rotatably connected to the second platform 3. The rotation of the rotating arms 5 is driven by a motor and transmission mechanism inside the columns, and the rotation of the first platform 2 and the second platform 3 is also driven by a separate motor located on the free end of the rotating arms 5. The flipping mechanism 1 is prior art, and its specific working principle is prior art, which will not be described in detail here.

[0039] The flipping mechanism 1 is provided with a welding robot 6 on one side for welding components on the first or second table. The welding robot 6 performs welding sequentially according to the preset positions. The operation and control of the welding robot 6 are existing technologies and will not be described in detail here.

[0040] The significant feature of this application is the mechanisms installed on the first and second surfaces, which can position and install the two large main components of the car seat.

[0041] The first platform 2 is equipped with a side plate positioning mechanism A1, a back square tube positioning mechanism A2, an upper tube rack assembly positioning mechanism A3, and a middle horizontal tube positioning mechanism A4.

[0042] The side plate positioning mechanism A1 includes two sets of first stepped columns A101 respectively located on the upper left and lower left sides of the first platform. These two sets of first stepped columns A101 are used to position the side and bottom surfaces of the side plate A102. It also includes a first stepped positioning pin A104 driven by a first cylinder A103 to extend and retract into the first positioning hole of the side plate A102, and a second stepped positioning pin A106 driven by a second cylinder A105 to extend and retract into the second positioning hole of the side plate. The two sets of first stepped columns are respectively equipped with features that allow the first stepped positioning pins... The second-step positioning pin is inserted into the third positioning hole A107 and the fourth positioning hole A108, respectively. That is, the third positioning hole A107 and the fourth positioning hole A108 are respectively set on the two sets of first-step columns A101. When the side plate A102 is placed on the two sets of first-step columns A101, the first-step positioning pin and the second-step positioning pin are driven by the first cylinder and the second cylinder to be inserted into the first positioning hole and the second positioning hole of the side plate, and at the same time inserted into the third positioning hole A107 and the fourth positioning hole A108, thereby realizing the positioning and installation of the side plate.

[0043] The back square tube positioning mechanism A2 includes two sets of second-step columns A201 located on the middle right side and lower right side of the first platform. These two sets of second-step columns are used to position the side and bottom surfaces of the back square tube A202. It also includes a third-step positioning pin A204 driven by a third cylinder A203 to extend and retract into the first positioning hole of the back square tube, and a fourth-step positioning pin A206 driven by a fourth cylinder A205 to extend and retract into the second positioning hole of the back square tube. The two sets of second-step columns are respectively provided with a fifth positioning hole and a sixth positioning hole that allow the third-step positioning pin and the fourth-step positioning pin to be inserted accordingly. When the back square tube A202 is placed on the two sets of second-step columns A201, the third-step positioning pin A204 and the fourth-step positioning pin A206 are driven by the third cylinder A203 and the fourth cylinder A205 to be inserted into the first positioning hole and the second positioning hole of the back square tube, and also into the fifth positioning hole and the sixth positioning hole, thereby realizing the positioning and installation of the back square tube.

[0044] The upper pipe rack assembly A301 includes an upper pipe rack A302 and two first conduits A303 welded and fixed on the upper pipe rack. The positioning mechanism A3 of the upper pipe rack assembly includes two sets of third-step columns A304 for supporting the first ends of the first conduits. A first positioning block A306 driven to extend and retract by a fifth cylinder A305 is provided at the position opposite the third-step columns. The first positioning block is used to position and support the second end of the first conduit. There are two first positioning blocks A306 and they are mounted on a seat. The extension rod of the fifth cylinder A305 drives the seat and the two first positioning blocks A306 thereon to extend and retract. The first positioning block A306 mates with the inner hole of the second end of the first conduit. The stepped end face of the first positioning block A306 abuts against the end face of the second end of the first conduit. In subsequent welding work, the two ends of the upper pipe rack are welded and fixed to the side plate and the upper part of the back square tube.

[0045] The middle horizontal tube positioning mechanism A4 includes two sets of first V-shaped columns A401 located in the middle of the first platform. The upper end face of the first V-shaped column is V-shaped. The two ends of the middle horizontal tube A402 abut against the inner side of the back square tube and the side plate. The upper end of the first V-shaped column provides V-shaped support and positioning for the middle horizontal tube A402, and the two ends are limited by the back square tube and the side plate, thereby realizing the installation and positioning of the middle horizontal tube A402. In subsequent welding work, the two ends of the middle horizontal tube are welded and fixed to the side plate and the back square tube.

[0046] Furthermore, the aforementioned first platform is also equipped with a left frame line positioning mechanism A5 and a right frame line positioning mechanism A6. The left frame line positioning mechanism A5 includes a second V-shaped post A501 and a first V-shaped groove A109 located on the first stepped post A101. The second V-shaped post A501 also has a V-shaped groove. The V-shaped groove of the second V-shaped post A501 and the first V-shaped groove A109 on the first stepped post A101 together support the left frame line (the left frame line is a rigid thin tube). In subsequent welding work, the left frame line A5... The two ends of 502 are welded and fixed to the upper and lower parts of the inner side of the side plate. The right frame positioning mechanism A6 includes a third V-shaped column A601 and a second V-shaped groove A209 located on the second step column A201. The third V-shaped column A601 is also provided with a V-shaped groove. The V-shaped groove of the third V-shaped column A601 and the second V-shaped groove A209 on the second step column A201 jointly support the right frame A602 (the right frame is a rigid thin tube). In subsequent welding work, the two ends of the right frame are welded and fixed to the back square tube.

[0047] Furthermore, a positioning mechanism A7 for the seat belt support frame is provided on the upper right side of the first platform. The positioning mechanism A7 for the seat belt support frame includes a third V-shaped post A701 and a first flip-up pressure block A702 pressed directly above the third V-shaped post. The middle part of the seat belt support frame is supported above the V-shaped groove of the third V-shaped post. The first flip-up pressure block A702 is used to press the seat belt support frame A703 (which is a rigid thin tube). The two ends of the seat belt support frame are respectively attached to the back square tube and the upper tube frame. During subsequent welding work, the two ends of the seat belt support frame are welded and fixed to the back square tube and the upper tube frame.

[0048] The first flip-up pressure block A702 is bent. The first end of the first flip-up pressure block is used to press the seat belt support frame line A703. The second end of the first flip-up pressure block is hinged to the mounting base A704 on the first platform. The middle part of the second end of the first flip-up pressure block is hinged to the free end of the telescopic rod of the eighth cylinder A705. After the eighth cylinder A705 is activated, the first flip-up pressure block swings with its second end as the fulcrum, so that the first end of the first flip-up pressure block presses on the seat belt support frame line A703.

[0049] Furthermore, the aforementioned side plate A102 is provided with a first channel for installing the second conduit A111, and the back square tube A202 is provided with a second channel for installing the third conduit A211. The first platform is provided with a fourth stepped column A212 for positioning the first end of the second conduit and supporting the first end of the third conduit. A first telescopic seat A214, driven by a sixth cylinder A213, is provided on the first platform opposite the fourth stepped column. The first telescopic seat is provided with a second positioning block A215 for positioning the second or third conduit. Driven by the sixth cylinder A213, the first telescopic seat A214 and its second positioning block A215 are pushed toward the second conduit A111 or the third conduit A211, so that the first end of the second conduit and the first end of the supporting third conduit abut against the fourth step column A212, thereby realizing the installation of the second conduit A111 or the third conduit A211 with the side plate A102 or the back square tube A202. During subsequent welding work, the connection position of the second conduit A111 or the third conduit A211 with the side plate A102 or the back square tube A202 is welded.

[0050] The first telescopic seat is provided with a first baffle A216 and a first pressure plate A218, which is driven to extend and retract by a seventh cylinder A217 and is arranged opposite to the first baffle. A handrail mounting part A219 is provided between the first baffle and the first pressure plate. The handrail mounting part is close to the upper edge of the side plate or the back square tube. During installation, the handrail mounting part is placed close to the upper edge of the side plate or the back square tube. Then, under the drive of the seventh cylinder A217, the first pressure plate A218 is pressed against the handrail mounting part A219 and the first baffle A216 to achieve the installation and positioning of the handrail mounting part A219. During subsequent welding work, the handrail mounting part is welded to the position close to the upper edge of the side plate or the back square tube.

[0051] The present invention relates to a method for mounting and positioning various components of a car seat frame fixture on a first platform.

[0052] The first step is to place the upper pipe rack assembly A301 on the first platform 2, so that the third step column A304 supports the first end of the first conduit A303. At this time, the fifth cylinder A305 works to drive the first positioning block A306 to extend and insert into the second end of the first conduit, thereby realizing the support and positioning of the upper pipe rack assembly.

[0053] The second step involves placing the middle horizontal tube A402 on the first V-shaped post A401, and then placing the side plate and the back square tube on the first stepped post A101. At this time, the first stepped positioning pin A104 and the second stepped positioning pin A106 are inserted into the first positioning hole, the second positioning hole, the third positioning hole A107 and the fourth positioning hole A108 respectively under the action of the first cylinder A103 and the second cylinder A105, thus realizing the installation and positioning of the side plate. Similarly, the third stepped positioning pin A204 and the fourth stepped positioning pin A205 are inserted into the fifth positioning hole and the sixth positioning hole respectively under the action of the third cylinder A203 and the fourth cylinder A205, thus realizing the installation and positioning of the back square tube. At the same time, during the extension of the first stepped positioning pin, the second stepped positioning pin, the third stepped positioning pin and the fourth stepped positioning pin, the side plate and the back square tube are also pressed onto both ends of the upper tube rack and the middle horizontal tube.

[0054] The third step is to place the left frame line A502 into the second V-shaped post and the first V-shaped groove A109 located on the first step post, and the right frame line A602 into the third V-shaped post and the second V-shaped groove A209 located on the second step post, and ensure that the two ends of the left frame line are attached to the upper and lower parts of the side plate, and the two ends of the right frame line are attached to the upper and lower parts of the back square tube.

[0055] The fourth step is to place the seat belt support frame line A703 on the third V-shaped post A701, while the first flip-up pressure block A702 directly above the third V-shaped post A701 is rotated and pressed onto the seat belt support frame line, ensuring that both ends of the seat belt support frame line are respectively attached to the back square tube and the upper tube frame, thereby achieving the positioning of the seat belt support frame line.

[0056] Fifth step, insert the second conduit A111 into the first channel and the third conduit A211 into the second channel. Drive the first telescopic seat A214 and the second positioning block A215 through the sixth cylinder A213, so that the first ends of the second and third conduits are moved and limited by the fourth step column A212. The second ends of the second and third conduits are positioned by the second positioning block, thus achieving the positioning of the second and third conduits. At the same time, place the handrail A219 mounting piece on the upper edge of the side plate and the back square tube. Under the limiting action of the first baffle A216 and the first pressure plate A218, the handrail mounting piece is positioned.

[0057] After the above components are installed and positioned, the first table is flipped to the rear by the flipping mechanism (the second table is flipped to the front at the same time), and the welding robot on the rear can then begin welding work at the corresponding position.

[0058] The second platform 3 is equipped with a left leg connecting plate positioning mechanism B1, a right leg connecting plate positioning mechanism B2, a rear seat tube assembly positioning mechanism B3, a front support plate positioning mechanism B4, and a front tube frame assembly positioning mechanism B5.

[0059] The left leg connecting plate positioning mechanism B1 includes a fifth step column B101 located on the upper and lower left sides of the second platform 3. This fifth step column supports and positions the lower front and lower rear parts of the left leg connecting plate B105. The left leg connecting plate is provided with an eighth positioning hole and a ninth positioning hole. The second platform is provided with a fifth step positioning pin B102 and a sixth step positioning pin B103 for positioning by inserting into the eighth and ninth positioning holes. The fifth step positioning pin and the sixth step positioning pin are driven to extend and retract by the ninth cylinder B104. During installation, the left leg connecting plate B105 is placed on the fifth step column B101. The fifth step column B101 supports the bottom and inner sides of the left leg connecting plate B105. Driven by the ninth cylinder B104, the fifth step positioning pin B102 and the sixth step positioning pin B103 extend and insert into the eighth and ninth positioning holes on the left leg connecting plate B105 to achieve positioning of the left leg connecting plate.

[0060] The right tripod connecting plate positioning mechanism B2 includes a sixth-step column B201 located on the upper and lower left sides of the second platform. This sixth-step column supports and positions the lower front and lower rear parts of the right tripod connecting plate B208. The right tripod connecting plate is provided with a tenth positioning hole and an eleventh positioning hole. The second platform is provided with a seventh-step positioning pin B202 and an eighth-step positioning pin B207 for positioning by inserting into the tenth and eleventh positioning holes. The seventh-step positioning pin and the eighth-step positioning pin are respectively driven to extend and retract by a tenth cylinder B203. The middle right side of the second platform is provided with a third telescopic seat B204 driven by a cylinder. The third telescopic seat is provided with a second support column B205 and a fourth flip-up pressure block B206. The second support column and the fourth flip-up pressure block face each other to clamp the right tripod connecting plate. During installation, the right tripod connecting plate B208 is placed on the sixth step column B201. The sixth step column supports and positions the lower front and lower rear parts of the right tripod connecting plate B208. Then, the tenth cylinder B203 drives the seventh step positioning pin B202 and the eighth step positioning pin B207 to extend and insert into the tenth and eleventh positioning holes on the right tripod connecting plate. Then, the third telescopic seat B204 extends under the drive of the cylinder. The second support column B205 presses against one side of the right tripod connecting plate, and the fourth flip-up pressure block B206 swings and presses against the other side of the right tripod connecting plate to achieve stable positioning and installation of the right tripod connecting plate.

[0061] The seat tube assembly positioning mechanism B3 includes a third positioning block B301 located on the upper part of the second platform, two sets of ninth-step positioning pins B302, and a second flip-up pressure block B303. The third positioning block has an arc-shaped positioning surface for supporting the arc-shaped surface of the seat tube assembly B307. The two sets of ninth-step positioning pins are respectively located on the left and right sides of the upper part of the second platform. The two sets of ninth-step positioning pins are driven to extend and retract by the eleventh cylinder B304. The two sets of ninth-step positioning pins are used to position the twelfth positioning hole B305 on the seat tube assembly. After swinging, the second flip-up pressure block B303 presses onto the inclined surface B306 of the seat tube assembly, ensuring that the outer wall surface of the seat tube assembly is in contact with the left leg connecting plate. The arc-shaped groove at the front of the right tripod connecting plate is close to the right tripod connecting plate. During installation, both ends of the rear tube assembly are placed against the left and right tripod connecting plates at their respective mounting positions. At the same time, the third positioning block B301 supports the arc-shaped surface of the rear tube assembly B307. Then, the two sets of ninth-step positioning pins extend under the drive of the eleventh cylinder B304 and are inserted into the twelfth positioning hole B305 on the rear tube assembly. Then, the second flip-up pressure block B303 is rotated and pressed onto the inclined surface B306 of the rear tube assembly under the action of the cylinder, realizing the installation and positioning of the rear tube assembly. During subsequent welding work, the parts of the rear tube assembly B307 that contact the left and right tripod connecting plates are welded.

[0062] The front support plate B401 has a buckle B402 that is snapped onto the upper part of the left leg connecting plate. The front support plate positioning mechanism B4 includes a fourth positioning block B403 that supports and limits the front support plate on the inclined surface. The fourth positioning block is driven to extend and retract by the twelfth cylinder B404. During installation, the front support plate B401 is snapped onto the upper part of the left leg connecting plate B105. Under the driving action of the twelfth cylinder B404, the fourth positioning block B403 is pressed onto the inclined surface of the front support plate, thus realizing the installation and positioning of the front support plate B401 and the left leg connecting plate. In subsequent welding work, the contact part between the front support plate B401 and the left leg connecting plate is welded.

[0063] The front tube frame assembly positioning mechanism B5 includes two sets of tenth-step positioning pins B501 located on the lower left and right sides of the second platform. These two sets of tenth-step positioning pins are used to position the two end holes of the front tube frame B503. The two sets of tenth-step positioning pins are driven to extend and retract by the thirteenth cylinder B502. The outer wall of the tube of the front tube frame assembly is supported on the arc-shaped surface of the front support plate and the right tripod connecting plate. During installation, the tube of the front tube frame assembly is placed at the corresponding positions of the front support plate B401 and the right tripod connecting plate B208. Then, the thirteenth cylinder B502 drives the two sets of tenth-step positioning pins to insert into the two ends of the tube of the front tube frame assembly, thereby realizing the installation and positioning of the front tube frame assembly. In the subsequent welding work, the positions where the tube of the front tube frame assembly contacts the front support plate B401 and the right tripod connecting plate B208 are welded.

[0064] The second platform is also equipped with a seat side plate positioning mechanism B6. The seat side plate positioning mechanism B6 includes a second telescopic seat B602 located on the left side of the second platform, driven by a fourteenth cylinder B601. The second telescopic seat has two sets of eleventh-step positioning pins B603, a first support column B604, and a third flip-up pressure block B605. The two sets of eleventh-step positioning pins are used to position two positioning holes on the seat side plate B606. The first support column and the third flip-up pressure block are directly opposite each other to press and clamp the seat side plate. During installation, the seat side plate B606... The two positioning holes are inserted into the two sets of eleventh-step positioning pins B603. Under the action of the cylinder, the second telescopic seat B602 is extended, and at the same time, the third flip-up pressure block B605 is rotated and pressed, so that the seat side plate B606 is clamped between the first support column B605 and the third flip-up pressure block B605. As the second telescopic seat extends, the two ends of the seat side plate B606 are pushed to the ends of the seat rear tube assembly and the front tube frame assembly to be attached. During the subsequent welding work, the two ends of the seat side plate B606 are welded to the parts that are attached to the tube end of the front tube frame assembly and the end of the seat rear tube assembly B307.

[0065] The second platform is also equipped with two sets of fourth V-shaped columns B701 for supporting and positioning the support tube B7. The two ends of the support tube are attached to the inner sides of the left and right leg connecting plates. During installation, the support tube B7 is placed into the two sets of fourth V-shaped columns B701 for positioning, so that the two ends of the support tube are attached to the inner sides of the left and right leg connecting plates. During subsequent welding work, the positions where the two ends of the support tube are attached to the inner sides of the left and right leg connecting plates are welded.

[0066] The second platform is also equipped with two sets of fifth V-shaped columns B801 for supporting and positioning the lower connecting pipe B8. The connectors on the lower connecting pipe are attached to the right leg connecting plate. During installation, the lower connecting pipe B8 is placed into the two sets of fifth V-shaped columns B801 for positioning. During subsequent welding work, the part of the lower connecting pipe B8 that contacts the right leg connecting plate is welded and fixed.

[0067] The second platform is provided with a sixth V-shaped column B901 for supporting and positioning the upper connecting pipe B9. One end of the upper connecting pipe is inserted into the left leg connecting plate. During installation, the upper connecting pipe B9 is placed in the sixth V-shaped column B901 for positioning, and one end of the upper connecting pipe is inserted into the left leg connecting plate. During subsequent welding work, the position where the upper connecting pipe contacts the left leg connecting plate is welded and fixed.

[0068] The present invention relates to a method for assembling the components of a car seat frame fixture on a second platform.

[0069] First, place the support tube B7 on the two sets of fourth V-shaped columns B701, and place the lower connecting tube B8 on the fifth V-shaped column B801.

[0070] The second step is to place the left leg connecting plate B105 on the fifth step column B101, and through the action of the ninth cylinder B104, the fifth step positioning pin B102 and the sixth step positioning pin B103 are inserted into the eighth positioning hole and the ninth positioning hole of the left leg connecting plate B105 respectively, and pushed into place to achieve the positioning of the left leg connecting plate.

[0071] The third step involves placing the right tripod connecting plate B208 on the sixth step column B201. The action of the tenth cylinder B203 causes the seventh step positioning pin B202 and the eighth step positioning pin B207 to be inserted into the tenth and eleventh positioning holes of the right tripod connecting plate B208, respectively, and pushed into place. Then, the third telescopic seat B204 extends, the second support column B205 is placed on one side of the right tripod connecting plate B208, and the fourth flip-up pressure block B206 works to press the other side of the right tripod connecting plate, thus positioning the right tripod connecting plate. At this time, the two ends of the support tube and the lower connecting tube are attached to the inner sides of the left tripod connecting plate and the right tripod connecting plate.

[0072] Fourth step, place the rear tube assembly B307 into the arc-shaped positioning surface of the third positioning block B301. The two sets of ninth-step positioning pins B302 extend under the drive of the eleventh cylinder B304 to insert into the twelfth positioning holes at both ends of the rear tube assembly. At the same time, the second flip-up pressure block B303 swings and presses on the inclined surface B306 of the rear tube assembly to ensure that the outer wall surface of the rear tube assembly is close to the arc-shaped groove at the front of the left and right tripod connecting plates.

[0073] Fifth step, snap the buckle B402 on the front support plate B401 into the upper part of the left leg connecting plate B105. The fourth positioning block B403 extends and presses against the inclined surface of the front support plate under the drive of the twelfth cylinder B404, thereby positioning the front support plate.

[0074] The sixth step is to support the tube body of the front tube frame assembly B503 on the arc-shaped surfaces of the front support plate B401 and the right leg connecting plate B208. The two sets of tenth-step positioning pins B501 are extended and inserted into the end holes of the front tube frame under the drive of the thirteenth cylinder B502 to achieve the positioning of the front tube frame assembly.

[0075] Step 7: Insert the two positioning holes of the seat side plate B606 into the two sets of eleventh-step positioning pins B603. Under the action of the cylinder, the second telescopic seat B602 is extended. At the same time, the third flip-up pressure block B605 is rotated and pressed, so that the seat side plate B606 is clamped between the first support column B605 and the third flip-up pressure block B605. As the second telescopic seat is extended, the two ends of the seat side plate B606 are pushed to the ends of the rear tube assembly and the front tube frame assembly to be attached.

[0076] In operation, the components on the first platform are manually installed and positioned at the front. Then, a flipping mechanism flips them to the rear. At this time, a welding robot located at the rear welds the bonding positions on the first platform. Simultaneously, corresponding components are installed on the second platform that has been moved to the front. After the components on the second platform are installed and the welding robot has also completed welding on the first platform at the rear, the flipping mechanism flips the first platform at the rear to the front for disassembling the workpiece and reinstalling new components. The second platform at the front is flipped to the rear, and the welding robot welds the bonding positions. After the welding on the second platform at the rear is completed and the first platform at the front is also installed, the flipping is repeated as before, and the aforementioned steps are repeated.

[0077] This invention allows for the installation of corresponding components on the first and second tabletops, each forming a large assembly. This simplifies the current process of creating multiple sets of fixtures to complete an assembly, eliminates the hassle of repeated disassembly and assembly during production, and greatly improves the efficiency of seat production.

[0078] The above description is merely an embodiment of the present invention. Any equivalent changes or modifications made within the scope of the claims of the present invention shall be covered by the present invention.

Claims

1. A seat frame jig for a vehicle seat, characterized by: It includes a flipping mechanism and a first table and a second table provided on the flipping mechanism; the flipping mechanism includes two vertical columns on both sides and rotating arms that are respectively rotatably hinged to the two vertical columns on both sides, and the first table and the second table are rotatably hinged between the free ends of the two rotating arms; a welding robot for welding components on the first table or the second table is provided on the rear side of the flipping mechanism. The first platform is equipped with a side plate positioning mechanism, a back square tube positioning mechanism, an upper tube rack assembly positioning mechanism, and a middle horizontal tube positioning mechanism; The side plate positioning mechanism includes two sets of first stepped columns respectively located on the upper left and lower left sides of the first platform. These two sets of first stepped columns are used to position the side and bottom surfaces of the side plate. It also includes a first stepped positioning pin driven by a first cylinder to extend and retract into the first positioning hole of the side plate, and a second stepped positioning pin driven by a second cylinder to extend and retract into the second positioning hole of the side plate. The two sets of first stepped columns are respectively provided with a third positioning hole and a fourth positioning hole that allow the first stepped positioning pin and the second stepped positioning pin to be inserted accordingly. The back square tube positioning mechanism includes two sets of second-step columns located on the middle right side and the lower right side of the first platform. These two sets of second-step columns are used to position the side and bottom surfaces of the back square tube. It also includes a third-step positioning pin driven by a third cylinder to extend and retract into the first positioning hole of the back square tube, and a fourth-step positioning pin driven by a fourth cylinder to extend and retract into the second positioning hole of the back square tube. The two sets of second-step columns are respectively provided with a fifth positioning hole and a sixth positioning hole that allow the third-step positioning pin and the fourth-step positioning pin to be inserted accordingly. The upper pipe rack assembly includes an upper pipe rack and a first conduit welded and fixed on the upper pipe rack. The positioning mechanism of the upper pipe rack assembly includes two sets of third-step columns for supporting the first end of the first conduit. A first positioning block driven to extend and retract by a fifth cylinder is provided at the position opposite the third-step columns. The first positioning block is used to position and support the second end of the first conduit. The middle horizontal tube positioning mechanism includes two sets of first V-shaped columns located in the middle of the first platform. The upper end face of the first V-shaped column is V-shaped, and the two ends of the middle horizontal tube abut against the inner side of the back square tube and the side plate. The second platform is equipped with a left tripod connecting plate positioning mechanism, a right tripod connecting plate positioning mechanism, a seat rear tube assembly positioning mechanism, a front support plate positioning mechanism, and a front tube frame assembly positioning mechanism; The positioning mechanism of the left leg connecting plate includes a fifth step column located on the upper and lower left side of the second platform. The fifth step column is used to support and position the lower front and lower rear of the left leg connecting plate. The left leg connecting plate is provided with an eighth positioning hole and a ninth positioning hole. The second platform is provided with a fifth step positioning pin and a sixth step positioning pin for insertion into the eighth and ninth positioning holes for positioning. The fifth step positioning pin and the sixth step positioning pin are respectively driven to extend and retract by a ninth cylinder. The right tripod connecting plate positioning mechanism includes a sixth-step column located on the upper and lower left sides of the second platform. The sixth-step column is used to support and position the lower front and lower rear parts of the right tripod connecting plate. The right tripod connecting plate is provided with a tenth positioning hole and an eleventh positioning hole. The second platform is provided with a seventh-step positioning pin and an eighth-step positioning pin for positioning by inserting into the tenth and eleventh positioning holes. The seventh-step positioning pin and the eighth-step positioning pin are respectively driven to extend and retract by a tenth cylinder. The middle right side of the second platform is provided with a third telescopic seat driven by a cylinder. The third telescopic seat is provided with a second support column and a fourth flip-up pressure block. The second support column and the fourth flip-up pressure block are directly opposite each other for the right tripod connecting plate. The seat tube assembly positioning mechanism includes a third positioning block on the second platform, two sets of ninth-step positioning pins, and a second flip-up pressure block. The third positioning block has an arc-shaped positioning surface for supporting the arc-shaped surface of the seat tube assembly. The two sets of ninth-step positioning pins are respectively located on the left and right sides of the upper part of the second platform. The two sets of ninth-step positioning pins are driven to extend and retract by the eleventh cylinder. The two sets of ninth-step positioning pins are used to position the twelfth positioning hole on the seat tube assembly. After swinging, the second flip-up pressure block presses onto the inclined surface of the seat tube assembly and ensures that the outer wall surface of the seat tube assembly is close to the arc-shaped groove at the front of the left and right leg connecting plates. The front support plate has a buckle that is snapped onto the upper part of the left leg connecting plate. The front support plate positioning mechanism includes a fourth positioning block that supports and limits the front support plate on the inclined surface. The fourth positioning block is driven to extend and retract by the twelfth cylinder. The front tube frame assembly positioning mechanism includes two sets of tenth-step positioning pins located on the lower left and right sides of the second platform. These two sets of tenth-step positioning pins are used to position the two end holes of the front tube frame. The two sets of tenth-step positioning pins are driven to extend and retract by the thirteenth cylinder. The outer wall of the front tube frame assembly is supported on the arc-shaped surface of the front support plate and the right leg connecting plate.

2. The seat base tooling for an automotive seat of claim 1, wherein: The first platform is also provided with a left frame line positioning mechanism and a right frame line positioning mechanism. The left frame line positioning mechanism includes a second V-shaped post and a first V-shaped groove located on the first step post. The right frame line positioning mechanism includes a third V-shaped post and a second V-shaped groove located on the second step post.

3. The seat base tooling for an automotive seat of claim 2, wherein: The upper right side of the first platform is provided with a positioning mechanism for the seat belt support frame. The positioning mechanism for the seat belt support frame includes a third V-shaped post and a first flip-up pressure block placed directly above the third V-shaped post. The middle part of the seat belt support frame is supported above the V-shaped groove of the third V-shaped post. The first flip-up pressure block is used to press the seat belt support frame. The two ends of the seat belt support frame are respectively attached to the back square tube and the upper tube frame.

4. The seat base tooling for an automotive seat of claim 3, wherein: The side plate is provided with a first channel for installing the second conduit, and the back square tube is provided with a second channel for installing the third conduit. The first platform is provided with a fourth stepped column for positioning the first end of the second conduit and supporting the first end of the third conduit. The first platform is provided with a first telescopic seat driven by a sixth cylinder at a position opposite to the fourth stepped column. The first telescopic seat is provided with a second positioning block for positioning the second or third conduit. The first telescopic seat is provided with a first baffle and a first pressure plate driven by a seventh cylinder for telescopic movement, which is arranged opposite to the first baffle. A handrail mounting piece is provided between the first baffle and the first pressure plate, and the handrail mounting piece is close to the upper edge of the side plate or the back square tube. The first flip-up pressure block is bent. The first end of the first flip-up pressure block is used to press the seat belt support frame line. The end of the second end of the first flip-up pressure block is hinged to the mounting base on the first platform. The middle part of the second end of the first flip-up pressure block is hinged to the free end of the telescopic rod of the eighth cylinder.

5. The seat base tooling for an automotive seat of claim 4, wherein: The second platform is also provided with a seat side plate positioning mechanism. The seat side plate positioning mechanism includes a second telescopic seat located on the left side of the second platform and driven to telescopically extend by the fourteenth cylinder. The second telescopic seat is provided with two sets of eleventh-step positioning pins, a first support column, and a third flip-up pressure block. The two sets of eleventh-step positioning pins are used to position two positioning holes on the seat side plate. The first support column and the third flip-up pressure block are directly opposite each other to press and clamp the seat side plate.

6. The seat base tooling for an automotive seat of claim 5, wherein: The second platform is also provided with two sets of fourth V-shaped columns for supporting the positioning support tube. The two ends of the support tube are attached to the inner sides of the left leg connecting plate and the right leg connecting plate.

7. The seat base tooling for an automotive seat of claim 6, wherein: The second platform is also provided with two sets of fifth V-shaped columns for supporting and positioning the lower connecting tube, and the connector on the lower connecting tube is attached to the right leg connecting plate; the second platform is provided with a sixth V-shaped column for supporting and positioning the upper connecting tube, and one end of the upper connecting tube is inserted into the left leg connecting plate.

8. A method of operating a seat frame fixture for an automobile seat as described in claim 4, characterized in that: The first step is to place the upper pipe rack assembly on the first platform so that the third step column supports the first end of the first conduit. At this time, the fifth cylinder works to drive the first positioning block to extend and insert into the second end of the first conduit, thereby achieving the support and positioning of the upper pipe rack assembly. The second step involves placing the middle horizontal tube on the first V-shaped post, and then placing the side plate and the back square tube on the first stepped post. At this time, the first and second stepped positioning pins are inserted into the first, second, third, and fourth positioning holes respectively under the action of the first and second cylinders, thus achieving the installation and positioning of the side plate. Similarly, the third and fourth stepped positioning pins are inserted into the fifth and sixth positioning holes respectively under the action of the third and fourth cylinders, thus achieving the installation and positioning of the back square tube. At the same time, during the extension of the first, second, third, and fourth stepped positioning pins, the side plate and the back square tube are also pressed onto both ends of the upper tube rack and the middle horizontal tube. The third step is to place the left frame line into the second V-shaped post and the first V-shaped groove on the first step post, and the right frame line into the third V-shaped post and the second V-shaped groove on the second step post, and ensure that the two ends of the left frame line are attached to the upper and lower parts of the side plate, and the two ends of the right frame line are attached to the upper and lower parts of the back square tube. The fourth step is to place the seat belt support frame line on the third V-shaped post, and at the same time, the first flip-up pressure block directly above the third V-shaped post is rotated and pressed onto the seat belt support frame line, ensuring that both ends of the seat belt support frame line are respectively attached to the back square tube and the upper tube frame, thereby achieving the positioning of the seat belt support frame line. Fifth step: Insert the second conduit into the first channel and the third conduit into the second channel. Drive the first telescopic seat and the second positioning block through the sixth cylinder to extend, so that the first ends of the second and third conduits are moved and limited by the fourth step column. The second ends of the second and third conduits are positioned by the second positioning block, thus achieving the positioning of the second and third conduits. At the same time, place the handrail mounting piece on the upper edge of the side plate and the back square tube. Under the limiting action of the first baffle and the first pressure plate, the handrail mounting piece is positioned.

9. A method of operating a seat frame fixture for an automobile seat as described in claim 7, characterized in that: The first step is to place the support tube on the two sets of fourth V-shaped columns and place the lower connecting tube on the fifth V-shaped column; The second step is to place the left tripod connecting plate on the fifth step column, and through the extension of the ninth cylinder, insert the fifth step positioning pin and the sixth step positioning pin into the eighth and ninth positioning holes of the left tripod connecting plate respectively, and push them into place to achieve the positioning of the left tripod connecting plate. The third step is to place the right tripod connecting plate on the sixth step column, and through the extension of the tenth cylinder, the seventh step positioning pin and the eighth step positioning pin are inserted into the tenth positioning hole and the eleventh positioning hole of the right tripod connecting plate respectively, and pushed into place. Then the third telescopic seat extends, the second support is placed on one side of the right tripod connecting plate, and the fourth flip-up pressure block works to press the other side of the right tripod connecting plate to achieve the positioning of the right tripod connecting plate. At this time, the two ends of the support tube and the lower connecting tube are attached to the inner sides of the left tripod connecting plate and the right tripod connecting plate. The fourth step is to place the rear tube assembly into the arc-shaped positioning surface of the third positioning block. The two sets of ninth-step positioning pins extend under the drive of the eleventh cylinder to insert into the two twelfth positioning holes of the rear tube assembly. At the same time, the second flip-up pressure block swings and presses on the inclined surface of the rear tube assembly to ensure that the outer wall surface of the rear tube assembly is close to the arc-shaped groove at the front of the left and right tripod connecting plates. Fifth step, snap the buckle on the front support plate into the upper part of the left leg connecting plate. The fourth positioning block extends under the drive of the twelfth cylinder and presses against the inclined surface of the front support plate to achieve the positioning of the front support plate. The sixth step is to support the tube body of the front tube frame assembly on the arc-shaped surface of the front support plate and the right tripod connecting plate. The two sets of tenth-step positioning pins are extended and inserted into the end holes of the front tube frame under the drive of the thirteenth cylinder to achieve the positioning of the front tube frame assembly. Step 7: Insert the two positioning holes of the seat side plate into the two sets of eleventh-step positioning pins. Under the action of the cylinder, the second telescopic seat is extended. At the same time, the third flip-up pressure block swings and presses, so that the seat side plate is clamped between the first support column and the third flip-up pressure block. As the second telescopic seat extends, the two ends of the seat side plate are pushed to the ends of the rear tube assembly and the front tube frame assembly to be attached.

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