Automobile seat framework welding device

Abstract

The invention relates to the technical field of automobile seat machining, in particular to an automobile seat framework welding device which is provided with a machining platform with a center opening. A longitudinal positioning assembly is arranged on the side of the machining platform, the longitudinal positioning assembly enables a longitudinal supporting pipe to pass through the center opening and then be located above the machining platform, a transverse positioning assembly is arranged on the machining platform, a transverse supporting beam is placed on the transverse positioning assembly, and the longitudinal positioning assembly is connected with the transverse positioning assembly through a side pushing transmission assembly. Compared with the prior art, the position of the longitudinal supporting pipe can be controlled through the longitudinal positioning assembly, the transverse supporting beam is driven by the transverse positioning assembly to move towards the longitudinal supporting pipe, the longitudinal supporting pipe and the transverse supporting beam are perpendicular in the length direction in the process, and finally the transverse supporting beam and the longitudinal supporting pipe can be in butt joint to form a base framework. And then the base frameworks located on the machining platform can be welded through the welding mechanism, the base frameworks do not need to be manually spliced one by one, and the base frameworks do not need to be moved before being welded.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile seat processing, and particularly relates to a welding device for an automobile seat frame. Background Art

[0002] An automobile seat frame is mainly composed of a base frame and a backrest frame. During the production process, both need to be assembled and then welded. Especially for the base frame, which mainly plays a bearing role. Refer to Figure 1 As shown, it generally consists of two cross braces 2 and two longitudinal braces 1 to form a looped frame structure. Therefore, during the welding process of the base frame, each part needs to be assembled.

[0003] In the traditional technology, generally, the cross braces 2 and the longitudinal braces 1 are initially docked to form the base frame, and then the base frame is moved to the welding station. The connection between the cross braces 2 and the longitudinal braces 1 is welded by a welding mechanism, so that the base frame has a stable structure. However, before the base frame is firmly welded, the base frame needs to be moved and transported to the welding station. During this process, the initially docked base frame is likely to be deformed, thus affecting the welding quality. Moreover, it is even easy for the initially docked base frame to be disassembled due to factors such as bumping. At this time, re-docking is required, which affects the work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding device for an automobile seat frame to solve the problems of efficiency and quality in the welding operation of the automobile seat frame in the traditional technology.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is a welding device for an automobile seat frame, including: a processing platform provided with a central opening; a longitudinal positioning component is arranged on the side of the processing platform. The longitudinal positioning component enables the longitudinal brace to pass through the central opening and be located above the processing platform. A transverse positioning component is arranged on the processing platform, and the cross brace is placed on the transverse positioning component. The longitudinal positioning component is connected to the transverse positioning component through a side-pushing transmission component. The longitudinal positioning component controls the transverse positioning component to move in a direction close to or away from the longitudinal brace, so that the cross brace and the longitudinal brace are docked to form the base frame, and the base frame is located on the processing platform; It further includes a welding mechanism for welding the base frame on the processing platform.

[0006] Furthermore, the side-pushing transmission component includes a side-pushing arm and a dialing arm. The side-pushing arm is connected to the longitudinal positioning component, and the longitudinal positioning component controls the side-pushing arm to perform a linear reciprocating motion. The dialing arm is connected to the side-pushing arm and the transverse positioning component. The side-pushing arm controls the dialing arm to swing, so that the transverse positioning component moves.

[0007] Furthermore, the lateral positioning assembly includes a tray and a limit baffle. The tray is located on the processing platform. A receiving groove is provided on the tray. The receiving groove has a single-sided opening. The cross bracing beam is placed in the receiving groove. The cross bracing beam can be moved out of the single-sided opening. The limit baffle is connected to the tray through a sliding strip, and there is a spacing between the limit baffle and the single-sided opening end of the receiving groove.

[0008] Furthermore, a locking protrusion is provided on the sliding card strip, and the locking protrusion has a longitudinal telescopic structure, and the transverse bracing beam connected to the longitudinal bracing tube is located between the locking protrusion and the limiting baffle.

[0009] Furthermore, a pressing plate is provided above the accommodating groove. When the cross bracing beam is placed in the accommodating groove, the pressing plate positions the cross bracing beam. The front end of the pressing plate is connected to an elastic positioning plate. The positioning plate has a bending angle, and the cross bracing beam connected to the longitudinal bracing tube is located between the limiting baffle and the bending angle of the positioning plate.

[0010] Furthermore, a card slot is provided on the tray, the slide card strip is located in the card slot, a return spring is provided in the card slot, the return spring connects the slide card strip with the tray, and the return spring applies a return force to the slide card strip.

[0011] Furthermore, a movable positioning plate is provided on the processing platform, a notch groove is provided at the center of the positioning plate, a magnetic attraction component is fixed in the notch groove, a matching part is provided on the slide plate, the matching part can enter into the notch groove, and the magnetic attraction component is coupled with the matching part.

[0012] Furthermore, the longitudinal positioning assembly includes a center disk and a transmission disk. A plurality of support arms are arranged on the center disk. The longitudinal support tube is clamped on the support arms. When the center disk rotates, the support arms are driven to pass through the center opening on the processing platform. The transmission disk is connected to the center disk through a central shaft. When the transmission disk rotates, it provides power to the side push transmission assembly.

[0013] Furthermore, an auxiliary positioning plug-in is provided on the processing platform, and the auxiliary positioning plug-in locks the positions of the center disk and the supporting arm.

[0014] Furthermore, a central opening is provided on the central disk, a locking chuck is provided in the central opening, and the locking chuck is connected to the central disk through an external card assembly. When the external card assembly is separated from the locking chuck, the locking chuck can rotate independently.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The longitudinal support pipe and the transverse support beam are respectively placed on the longitudinal positioning component and the transverse positioning component, and then the position of the longitudinal support pipe is controlled by the longitudinal positioning component. At the same time, the transverse support beam is driven by the transverse positioning component to move towards the longitudinal support pipe. During this process, the longitudinal support pipe and the transverse support beam are perpendicular in the length direction. Finally, the transverse support beam can be docked with the longitudinal support pipe to form the base skeleton, and then the welding mechanism can be used to weld the base skeleton located on the processing platform without manually assembling the base skeleton one by one, and there is no need to move the base skeleton before welding the base skeleton; When welding the base skeleton, the transverse support beam welded to the longitudinal support pipe is located between the clamping protrusion and the limiting baffle. At this time, the transverse support beam has strong stability, which can effectively reduce welding deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the base skeleton of an automobile seat in the prior art; Figure 2 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 3 is a schematic structural diagram of the longitudinal positioning component of an embodiment of the present invention; Figure 4 is a schematic structural diagram of the auxiliary positioning plug of an embodiment of the present invention; Figure 5 is a schematic structural diagram of the transverse positioning component of an embodiment of the present invention; Figure 6 is a schematic diagram of the connection structure between the side push drive component and the transverse positioning component of an embodiment of the present invention; Figure 7 is a schematic structural diagram of the center disc of an embodiment of the present invention; Figure 8 is a schematic structural diagram of the lock card disc of an embodiment of the present invention; Figure 9 is a schematic diagram of the connection of the outer card component of an embodiment of the present invention; Figure 10 is a schematic structural diagram of the processing platform of an embodiment of the present invention; Figure 11 is a schematic diagram of the connection between the tray and the limiting baffle of an embodiment of the present invention; Figure 12 is a schematic diagram of the sliding card strip of an embodiment of the present invention; Figure 13 is a schematic diagram of the connection between the tray and the sliding card strip of an embodiment of the present invention; Figure 14 is a schematic structural diagram of the positioning disc of an embodiment of the present invention; Figure 15 is a schematic diagram of the first structure of the connection between the transmission disc and the side push arm in an embodiment of the present invention; Figure 16 This is the second structural schematic diagram of the connection between the drive disk and the side push arm in the embodiment of the present invention.

[0017] Among them, 1 - longitudinal support pipe, 2 - cross support beam, 3 - longitudinal positioning component, 301 - central disk, 3011 - positioning pit, 3012 - displacement port, 3013 - central port, 3014 - outer chuck, 3015 - lead screw, 3016 - transmission gear, 3017 - linkage ring, 3018 - ring body, 302 - side bracket, 303 - support arm, 304 - drive disk, 3041 - guide groove, 30411 - feed section, 30412 - return section, 305 - auxiliary plate, 306 - insertion rod, 307 - central shaft rod, 308 - locking chuck, 3081 - mating groove, 3082 - inner clamping groove, 4 - transverse positioning component, 401 - tray, 402 - receiving groove, 403 - slider, 404 - limiting baffle, 405 - sliding clamping strip plate, 406 - mating part, 407 - bottom clamping groove, 4051 - clamping protrusion, 409 - reset spring member, 5 - processing platform, 501 - central opening, 502 - chute, 503 - side notch, 504 - positioning disk, 5041 - notch groove, 6 - welding mechanism, 7 - side push drive component, 701 - side push arm, 7011 - straight arm rod, 7012 - vertical rod, 702 - dial arm, 9 - reference plate, 912 - buffer rod, 913 - guiding rod, 10 - support arm, 11 - push rod, 111 - connecting rod, 12 - tension spring, 13 - pressing piece, 14 - clamping piece. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention. In the embodiments, the components of the embodiments of the present application usually described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application.

[0019] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be an electrical connection; it can be a hydraulic oil circuit connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0020] Referring to Figure 1 As shown, the base frame of the vehicle seat is composed of two longitudinal support tubes 1 and two transverse support beams 2. It needs to be first assembled into a "well"-shaped frame and then the frame is welded.

[0021] Referring to Figure 2 and Figure 10 As shown, the present application provides a welding device for a vehicle seat frame, which is used to assemble and weld the base frame of the seat. The device includes a longitudinal positioning component 3 and a transverse positioning component 4, which are respectively used to carry and adjust the longitudinal support tube 1 and the transverse support beam 2, so that the longitudinal support tube 1 and the transverse support beam 2 are on the same horizontal plane and the perforations of the longitudinal support tube 1 and the transverse support beam 2 are aligned. Then, the transverse positioning component 4 controls the transverse support beam 2 to move towards the longitudinal support tube. Finally, the longitudinal support tube 1 passes through the perforation on the transverse support beam 2, and then the assembled base frame can be welded by a welding mechanism 6.

[0022] The device further includes a processing platform 5. The processing platform 5 is used to assist the longitudinal component to position the longitudinal support tube 1, and at the same time it plays a role in carrying the transverse positioning component 4. Specifically, a central opening 501 is provided on the processing platform 5. The longitudinal positioning component 3 is located on the side of the central opening 501. The longitudinal positioning component 3 can drive the longitudinal support tube 1 to pass through the central opening 501, and then lock the position of the longitudinal support tube 1. The transverse positioning component 4 is connected to the processing platform 5. There are two transverse positioning components 4. The central opening 501 is located between the two transverse positioning components 4. The two transverse positioning components 4 can move towards the central opening 501. At this time, the position of the transverse support beam 2 is adjusted so that the longitudinal support tube 1 passes through the perforation on the transverse support beam 2. After the welding of the base frame is completed, the two transverse positioning components 4 are controlled to move away from the central opening 501, and then the welded base frame is removed from the processing platform 5.

[0023] Referring to Figure 2 and Figure 3As shown, the above-mentioned longitudinal positioning component 3 includes a rotatable central disk 301. Side brackets 302 are arranged on both sides of the central disk 301. The central disk 301 is connected to the side brackets 302 through a central shaft rod 307. A number of support arms 303 are fixed on the central disk 301. The longitudinal support pipe 1 is clamped on the support arms 303. The number of support arms 303 is arranged in a circular array around the central axis of the central disk 301. Two longitudinal support pipes 1 are placed on each support arm 303. When the central disk 301 rotates, it drives the support arms 303 to pass through the central opening 501 on the processing platform 5. It should be noted that the central height of the central disk 301 is less than the horizontal height of the processing platform 5. That is, when a certain support arm 303 on the central disk 301 passes through the central opening 501 and is in a horizontal state, the support arm 303 is located above the processing platform 5, and there is a certain longitudinal distance between the support arm 303 and the upper surface of the processing platform 5. At this time, the central disk 301 needs to be locked in position, so as to lock the position of the support arm 303, ensuring that when the transverse positioning component 4 drives the transverse support beam 2 to translate, the longitudinal support pipe 1 can be docked with the transverse support beam 2; Specifically, refer to Figure 4 As shown, a number of positioning pits 3011 are arranged on the central disk 301, and an auxiliary positioning plug is arranged on the processing platform 5. The auxiliary positioning plug includes an auxiliary plate 305 located on the side of the central opening 501. A plug rod 306 passes through the auxiliary plate 305. The plug rod 306 is connected to a power push rod. When a certain positioning pit 3011 on the central disk 301 is about to align with the plug rod 306, the telescopic movement of the power push rod can control the plug rod 306 to translate towards the central disk 301, and the end of the plug rod 306 can be inserted into the positioning pit 3011. At this time, the central disk 301 cannot rotate, so as to lock the position of the support arm 303, facilitating the subsequent docking of the transverse support beam 2 and the pipe fittings on the support arm 303.

[0024] Refer to Figure 2 and Figure 5As shown in the figure, two lateral positioning components 4 move synchronously, but in opposite directions. The lateral positioning component 4 includes a tray 401 disposed on the processing platform 5. In this embodiment, the end of the tray 401 close to the central opening 501 is referred to as the inner end, and the end far from the central opening 501 is the outer end. The tray 401 has a receiving groove 402, and the receiving groove 402 extends from the inner end to the outer end of the tray 401, that is, the receiving groove 402 on the tray 401 has a single-side opening, and the single-side opening is located at the inner end of the tray 401. The cross-section of the receiving groove 402 is "convex" shaped. The cross bracing beam 2 can be moved into the single-side opening of the receiving groove 402, so that a plurality of cross bracing beams 2 are arranged in the receiving groove 402. Two sliders 403 are fixed at the outer end of the tray 401. At the same time, two sliding grooves 502 are provided on the processing platform 5. The two sliding grooves 502 are parallel to each other, and the extension line of the sliding groove 502 is perpendicular to the central opening 501. The two sliders 403 are respectively located in the corresponding sliding grooves 502. When the tray 401 approaches or moves away from the central opening 501, the slider 403 moves in the corresponding sliding groove 502. At this time, the inclination of the tray 401 during the movement can be avoided, so that the longitudinal support tube 1 can be accurately inserted into the through hole of the cross bracing beam 2.

[0025] When controlling the docking of the cross bracing beam 2 and the longitudinal support tube 1, the tray 401 needs to be translated on the processing platform 5 in the direction of the central opening 501. During this process, a plurality of cross bracing beams 2 are driven to move synchronously. Therefore, when the longitudinal support tube 1 passes through the through hole on the cross bracing beam 2, a plurality of cross bracing beams 2 located in the receiving groove 402 are all connected to the longitudinal support tube 1. At this time, other cross bracing beams 2 need to be pressed down and then the tray 401 is controlled to move away from the central opening 501. Finally, only the outermost cross bracing beam 2 is retained and connected to the longitudinal support tube 1, and then the welded base frame can be removed.

[0026] In this application, the lateral positioning component 4 approaches or moves away from the central opening 501 under the control of the longitudinal positioning component 3. Refer to Figure 2 and Figure 3As shown, this longitudinal positioning component 3 further includes two drive disks 304. Both drive disks 304 are parallel to the central disk 301. There is a side notch 503 provided on the processing platform 5. The drive disks 304 are located within the side notch 503. Both drive disks 304 are connected to the central shaft rod 307. When the central disk 301 is not locked, the central shaft rod 307 can drive the drive disks 304 to rotate synchronously with the central disk 301. A side push drive assembly 7 is connected between the drive disk 304 and the tray 401 of the transverse positioning component 4. When the drive disk 304 rotates, it applies a thrust to the tray 401 through the side push drive assembly 7, thereby causing the tray 401 to drive the cross brace 2 to move towards the central opening 501. When the docking of a certain group of cross braces 2 and the pipe fittings is completed, the drive disk 304 can continue to rotate. At this time, the tray 401 moves in a direction away from the central opening 501, that is, the drive disk 304 can control the tray 401 to perform a linear reciprocating motion through the side push drive assembly 7.

[0027] Refer to Figure 6 As shown, the side push drive assembly 7 includes a side push arm 701 provided below the processing platform 5. The side push arm 701 includes a straight arm rod 7011 and a vertical rod 7012. The vertical rod 7012 is fixed to the rear end of the straight arm rod 7011. The side push arm 701 is connected with a dialing arm 702 through the vertical rod 7012. The side push arm 701 is connected to the processing platform 5 through a limit suspension pipe. At this time, the side push arm 701 is in a horizontal state, while the dialing arm 702 is pivotally connected to the processing platform 5. There are kidney-shaped openings extending along the length direction provided on the dialing arm 702. There are two kidney-shaped openings on the dialing arm 702, and the two kidney-shaped openings are respectively close to both ends of the dialing arm 702. The upper end of the vertical rod 7012 passes through the kidney-shaped opening near the rear end on the dialing arm 702. Initially, the dialing arm 702 is in an inclined state. When the side push arm 701 performs a linear reciprocating motion, the vertical rod 7012 moves within the kidney-shaped opening on the dialing arm 702, causing the dialing arm 702 to swing. The pivot connection between the dialing arm 702 and the processing platform 5 is located between the two kidney-shaped openings. The dialing arm 702 is also slidably connected to the tray 401, and the connection is located within the kidney-shaped opening near the front end on the dialing arm 702. When the drive disk 304 rotates, it will control the side push arm 701 to perform a linear reciprocating motion, and then drive the dialing arm 702 to swing, thereby causing the tray 401 to move towards the central opening 501.

[0028] It should be noted that when controlling the tray 401 to move towards the central opening 501, the central disk 301 is in a locked state. At this time, the central disk 301 cannot rotate, and the movement of the tray 401 depends on the rotation of the drive disk 304. Therefore, refer to Figure 3 、 Figure 7 and Figure 8As shown, the drive disk 304 is fixedly connected to the central shaft rod 307. The central disk 301 is connected to the central shaft rod 307 through a locking chuck 308. The locking chuck 308 is fixed on the central shaft rod 307. A central opening 3013 is provided on the central disk 301. At this time, the central disk 301 is in an annular shape. The locking chuck 308 is located within the central opening 3013 of the central disk 301. A cavity is provided within the central disk 301, and a displacement opening 3012 is provided on the inner circumferential surface of the central disk 301. The displacement opening 3012 communicates with the cavity and extends along the axial direction of the central disk 301. An outer clamping assembly is provided within the cavity of the central disk 301. A number of outer clamping heads 3014 on the outer clamping assembly extend out from the displacement opening 3012. A mating groove 3081 is provided on the locking chuck 308, and the mating groove 3081 extends along the circumferential direction of the locking chuck 308. A number of groups of inner clamping slots 3082 are provided within the mating groove 3081. After assembling the locking chuck 308 and the central disk 301, the outer clamping heads 3014 on the outer clamping assembly are adapted within the inner clamping slots 3082. At this time, the central disk 301 and the locking chuck 308 can rotate simultaneously. After the position of the central disk 301 is locked by the auxiliary positioning plug-in, the outer clamping assembly inside the central disk 301 moves axially, so that the outer clamping heads 3014 on the outer clamping assembly are separated from the locking chuck 308. At this time, the central disk 301 cannot rotate, while the locking chuck 308 can continue to rotate. Therefore, at this time, the locking chuck 308 and the drive disk 304 can be driven to rotate simultaneously by the central shaft rod 307, enabling the drive disk 304 to cooperate with the side push drive assembly 7 for operation.

[0029] Specifically, referring to Figure 9 As shown, a lead screw 3015 is provided within the cavity of the central disk 301. The lead screw 3015 extends along the axial direction of the central disk 301, and both ends of the lead screw 3015 penetrate through the central disk 301. There are at least three lead screws 3015, and the three lead screws 3015 are arranged in an array around the central axis of the central disk 301. A drive cover can be installed on one side of the central disk 301. The drive cover is annular, and a micro motor is installed within the drive cover. The micro motor is docked with a certain lead screw 3015. A transmission gear 3016 is fixed at each end of each lead screw 3015. A linkage ring 3017 is provided within the drive cover. Convex teeth are provided on the inner circumference of the linkage ring 3017. At this time, the linkage ring 3017 meshes with the transmission gears 3016 on the three lead screws 3015 simultaneously, so that the three lead screws 3015 can be controlled to rotate simultaneously by the micro motor. The outer clamping assembly is connected to the three lead screws 3015 at the same time. When the three lead screws 3015 rotate, the movement of the outer clamping assembly is controlled. The outer clamping assembly includes an annular ring body 3018. The ring body 3018 is connected to the three lead screws 3015. The outer clamping heads 3014 are fixed on the inner circumference of the ring body 3018, and at this time, the outer clamping heads 3014 extend along the radial direction of the ring body 3018.

[0030] An infrared sensor can be set on the processing platform 5. When the infrared sensor senses the support arm 303 and the support arm 303 is in a horizontal state, the infrared sensor sends a control signal to the central control console. The central control console transmits a signal to the power push rod, and the power push rod controls the movement of the insertion rod 306. A sensor is provided at the end of the insertion rod 306. After the insertion rod 306 is inserted into the positioning pit 3011, an electrical signal is sent to the micro motor to make the micro motor start working, thereby controlling the rotation of the lead screw 3015 to drive the outer clamping assembly to move, and finally separating the outer clamping head 3014 from the locking chuck 308, so that the transmission disk 304 can continue to rotate and control the transverse support beam 2 to move towards the longitudinal support tube 1; After a set of base skeletons are welded, control the welding mechanism 6 to move towards the area away from the central opening 501. At this time, the central control console sends a control signal to the pneumatic push rod to make the pneumatic push rod contract, and controls the micro motor to drive in the reverse direction to reset the outer clamping head 3014 and re-match the central disk 301 with the locking chuck 308. Then continue to control the rotation of the central shaft, and the welded base skeleton can be moved through the support arm 303. The subsequent other support arms 303 move the other longitudinal support tubes 1 to the processing positions again.

[0031] When controlling the transverse support beam 2 to move towards the longitudinal support tube 1 through the transverse positioning assembly 4, it is necessary to control the displacement of the transverse support beam 2 to avoid non-compliance with the design requirements after its butt joint with the longitudinal support tube 1. Therefore, refer to Figures 11 to 14As shown, the horizontal positioning component 4 further includes a limit baffle 404. The limit baffle 404 is connected to the tray 401 through a sliding strip plate 405. There is a distance between the limit baffle 404 and the single-side opening end of the accommodating groove 402. After the cross beam 2 is located within this distance, it can be conveniently taken out. A movable positioning disk 504 is arranged in the chute 502 on the processing platform 5. After the positioning disk 504 moves, the linear distance between it and the central opening 501 can be changed, and then the position of the positioning disk 504 is locked. A notch groove 5041 is arranged at the center of the positioning disk 504, and a magnetic attraction component is fixed in the notch groove 5041. A matching part 406 is arranged on the sliding strip plate 405, and the matching part 406 can enter the notch groove 5041. When the matching part 406 is aligned with the magnetic attraction component on the positioning disk 504, the matching part 406 is adsorbed on the magnetic attraction component, and at this time, the positioning of the sliding strip plate 405 is realized. That is, the position of the positioning disk 504 is adjusted in advance at the initial stage. Then, when the horizontal positioning component 4 controls the cross beam 2 to approach the central opening 501, through the cooperation of the matching part 406 and the magnetic attraction component, the position of the limit baffle 404 is limited, avoiding excessive insertion of the longitudinal support pipe 1 through the perforation on the cross beam 2. At the same time, a number of notches are arranged on the limit baffle 404, and the perforations on the cross beam 2 correspond to the notches on the limit baffle 404. After the tray 401 moves towards the central opening 501, the longitudinal support pipe 1 on the support arm 303 can pass through the notches on the limit baffle 404 and then enter the perforations on the cross beam 2, thus forming the assembly of the cross beam 2 and the longitudinal support pipe 1.

[0032] Since it is necessary to clamp other cross braces 2 and then control the tray 401 to translate away from the central opening 501, and finally only one outermost cross brace 2 is retained and connected to the longitudinal brace tube 1. Therefore, when controlling the tray 401 to move away from the central opening 501, the limit baffle 404 cannot move. So, a bottom card slot 407 is provided on the lower surface of the tray 401, and the sliding card strip 405 can be inserted into the bottom card slot 407. When the distance between the tray 401 and the limit baffle 404 increases, the part of the sliding card strip 405 located in the bottom card slot 407 decreases. A clamping protrusion 4051 is also provided on the sliding card strip 405. The clamping protrusion 4051 has a longitudinal telescopic structure. The longitudinal telescopic structure includes the following implementation structure: the clamping protrusion can be composed of upper and lower parts. Both the upper and lower parts are flat, and the upper part is sleeved with the lower part. The lower part can be fixed on the sliding card strip 405, and an elastic member is provided between the upper part and the lower part. When a downward pressure is applied to the upper part, the upper part can move downward. Alternatively, a buried groove can be provided on the sliding card strip 405, and the lower part is fixed in the buried groove. The cross brace 2 connected to the longitudinal brace tube 1 is located between the clamping protrusion 4051 and the limit baffle 404. So, after positioning the sliding card strip 405, other cross braces 2 can be pressed and then the tray 401 can be pulled back away from the central opening 501. In this way, only the outermost cross brace 2 is retained and connected to the tube body. After welding the cross brace 2 to the longitudinal brace tube 1, the formed base skeleton can be removed; Then, by rotating the central disk 301, the next set of support arms 303 is passed through the central opening 501, and this set of support arms 303 is in a horizontal state. However, during this process, this set of support arms 303 is blocked by the limit baffle 404. Therefore, after controlling the tray 401 to move away from the central opening 501 and removing the already welded base skeleton, it is necessary to move the limit baffle 404 towards the tray 401, that is, it is necessary to restore the distance between the tray 401 and the limit baffle 404 to the initial state. Only in this way can the limit baffle 404 be moved to the side of the central opening 501, and thus it will not affect the passage of the support arms 303 through the central opening 501.

[0033] Specifically, a reset spring member 409 is arranged in the bottom card slot 407. The reset spring member 409 connects the sliding card strip plate 405 and the tray 401. The reset spring member 409 is a spring that generates a restoring force after being stretched. Thus, after the welded and shaped base skeleton is removed, under the action of the reset force exerted by the reset spring member 409 on the sliding card strip plate 405, the sliding card strip plate 405 and the limit baffle 404 move away from the central opening 501 at the same time. A flat strip opening is arranged in the accommodation groove 402, and the flat strip opening communicates with the bottom card slot 407. When the limit baffle 404 moves towards the tray 401, the clamping protrusion 4051 enters the flat strip opening, and it can bounce up again after passing under a certain cross brace 2 located in the accommodation groove 402. Thus, the cross brace 2 is re-positioned. When the tray 401 moves towards the central opening 501 again, the limit baffle 404 is continuously positioned by the positioning disk 504. Thus, the reciprocating movement of the tray 401 can be repeated, and the feeding action of the cross brace 2 can be continuously realized.

[0034] However, since there are a large number of cross braces 2 initially located in the accommodation groove 402, and after a base skeleton is assembled, welded and removed, the number of cross braces 2 in the accommodation groove 402 will decrease. As the base skeletons are successively assembled, welded and removed, the number of cross braces 2 in the accommodation groove becomes less and less, and the limit baffle 404 cannot enter the accommodation groove 402. Therefore, a feeding component is arranged on the tray 401, and the feeding component can push the cross braces 2 in the accommodation groove 402 towards the limit baffle 404. Refer to Figure 5 As shown, the feeding component includes a reference plate 9 fixed to the outer end of the tray 401. On the reference plate 9, there are fixed arms 10 extending vertically to both sides. A feeding push rod 11 passes through the arms 10. The feeding push rod 11 passes through the tray 401. The inner end of the feeding push rod 11 is located in the accommodation groove 402. A tension spring 12 is connected between the outer end of the feeding push rod 11 and the arm 10. When all the cross braces 2 are located in the accommodation groove 402, the tension spring 12 is at the maximum stretching amount. However, due to the arrangement of the reset spring member 409, the elastic force of the tension spring 12 at this time is not sufficient to move the limit baffle 404 away from the tray 401. When the number of cross braces 2 in the accommodation groove 402 decreases, under the action of the elastic force of the tension spring 12, the cross braces 2 located in the accommodation groove 402 will move towards the limit baffle 404, realizing the feeding of the cross braces 2. Meanwhile, a pressing piece 13 is further arranged on the reference plate 9. The rear end of the pressing piece 13 is fixedly connected to the reference plate 9. The pressing piece 13 is located above the accommodating groove 402. After the cross bracing beam 2 is placed in the accommodating groove 402, the pressing piece 13 positions the cross bracing beam 2. The front end of the pressing piece 13 is butted with an elastic clamping piece 14. The clamping piece 14 is in a "V"-shaped bending structure. Initially, the reset spring member 409 is in a natural state, and the limiting baffle 404 contacts the inner end of the tray 401. At this time, the limiting baffle 404 seals one-sided opening of the accommodating groove 402, and the end of the clamping piece 14 rests on the limiting baffle 404. The cross bracing beam 2 located in the accommodating groove 402 includes a first cross bracing beam and a second cross bracing beam. Among them, the cross bracing beam 2 connected to the longitudinal bracing pipe 1 is the first cross bracing beam, and the other cross bracing beams 2 are the second cross bracing beams. The first cross bracing beam is located between the limiting baffle 404 and the bending angle of the clamping piece 14. After controlling the tray 401 to move away from the central opening 501, the clamping piece 14 loses the support of the limiting baffle 404 and will rebound downward. At this time, the bending angle of the clamping piece 14 separates the first cross bracing beam from the second cross bracing beam, and further enables the second cross bracing beam in the accommodating groove 402 to move away from the central opening 501. When the base framework is removed, under the restoring force of the reset spring member 409, the limiting baffle 404 is reset, and the end of the clamping piece 14 is re-laid on the limiting baffle 404. The clamping piece 14 does not affect the feeding of the cross bracing beam 2 in the accommodating groove 402.

[0035] Finally, it should be noted that there are two connection structures for the connection between the transmission disk 304 and the front end of the side push arm 701 in this application: The first connection structure is shown in Figure 15 As shown, a guiding groove 3041 is arranged on the transmission disk 304. Since the side push arm 701 includes a straight arm rod 7011 and a vertical rod 7012, at this time, the guiding groove 3041 is connected to the straight arm rod 7011. When the transmission disk 304 rotates, it can drive the straight arm rod 7011 to perform a linear reciprocating motion. Specifically, the guiding groove 3041 is composed of several arc-shaped segment grooves. Each segment groove includes a feeding segment 30411 and a return segment 30412. A guide rod is fixed at the front end of the straight arm rod 7011, and a guide wheel is sleeved on the guide rod. The guide wheel is located in the guiding groove 3041. When the front end of the straight arm rod 7011 moves in the feeding segment 30411, the tray 401 will be controlled to move towards the central opening 501 through the dialing arm 702, and when the front end of the straight arm rod 7011 moves in the return segment 30412, the tray 401 will be controlled to move away from the central opening 501 through the dialing arm 702. The several segment grooves are arranged around the central axis of the transmission disk 304 and are connected in sequence. Finally, the guiding groove 3041 forms a closed loop. When the transmission disk 304 rotates, the straight arm rod 7011 can perform a linear reciprocating motion, and further drive the tray 401 to approach or move away from the central opening 501.

[0036] In this embodiment, when the front end of the straight arm rod 7011 moves from the starting point to the ending point of the segment slot, the tray 401 completes an action of approaching and moving away from the central opening 501 once.

[0037] The second connection structure, refer to Figure 16 As shown, an eccentric shaft is provided on the transmission disk 304. The eccentric shaft is hinged with a connecting rod 111, and the connecting rod 111 is hinged with the front end of the straight arm rod 7011. When the transmission disk 304 rotates, it can drive the straight arm rod 7011 to perform a linear reciprocating motion. However, in this embodiment, after the transmission disk 304 rotates 360°, the tray 401 completes an action of approaching and moving away from the central opening 501 once.

[0038] In addition, refer to Figure 5 As shown, in the present application, a blind hole can also be provided on the reference plate 9. The blind hole extends from the outer end of the reference plate 9 towards the tray 401. The reference plate 9 is connected with a buffer rod 912 through the blind hole. The inner end of the buffer rod 912 is located in the blind hole. The buffer rod 912 is connected with a buffer compression spring located in the blind hole. At this time, the buffer rod 912 and the reference plate 9 form a telescopic structure. A guiding rod 913 is fixed at the outer end of the buffer rod 912. The guiding rod 913 passes through the waist-shaped opening near the front end on the dialing arm 702, so as to increase the control over the moving stroke of the tray 401.

[0039] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claimed rights.

Claims

1. A welding device for a car seat frame, characterized in that: include: A processing platform (5), wherein the processing platform (5) is provided with a central opening (501); A transverse positioning assembly (4), wherein the transverse positioning assembly (4) is arranged on the processing platform (5), and the transverse positioning assembly (4) is used to carry a transverse bracing beam; A side thrust transmission assembly (7), wherein the side thrust transmission assembly (7) is movably connected to the lateral positioning assembly (4); A longitudinal positioning assembly (3), wherein the longitudinal positioning assembly (3) enables the longitudinal support tube to be positioned above the processing platform (5) after passing through the central opening (501), and the longitudinal positioning assembly (3) is connected to the side thrust transmission assembly (7); The longitudinal positioning assembly (3) controls the transverse positioning assembly (4) to move towards or away from the longitudinal support tube via the side push transmission assembly (7), so that the transverse support beam and the longitudinal support tube are connected to form a base frame, and the base frame is located on the processing platform (5); A welding mechanism (6), wherein the welding mechanism (6) is used to weld a base frame on the processing platform (5).

2. The automobile seat frame welding device according to claim 1, characterized in that: The side thrust transmission assembly (7) comprises: A side thrust arm (701), wherein the side thrust arm (701) is connected to the longitudinal positioning assembly (3), so that the side thrust arm (701) performs linear reciprocating motion under the control of the longitudinal positioning assembly (3); The lever arm (702) is connected to the side thrust arm (701) and the transverse positioning assembly (4) respectively, so that the lever arm (702) is controlled by the side thrust arm (701) to swing, thereby moving the transverse positioning assembly (4).

3. The automobile seat frame welding device according to claim 1 or 2, characterized in that: The lateral positioning component (4) comprises: A tray (401), the tray (401) being located on the processing platform (5), the tray (401) being provided with a receiving groove (402), the receiving groove (402) having a single-sided opening, so that a cross bracing beam can be placed in the receiving groove (402), and the cross bracing beam can be removed from the single-sided opening; A limit baffle (404), wherein a distance is provided between the limit baffle (404) and a single-side opening end of the accommodating groove (402); A slide plate (405), wherein the slide plate (405) is fixedly connected to the limit baffle, and the slide plate (405) is movably connected to the tray.

4. The automobile seat frame welding device according to claim 3, characterized in that: The sliding card strip plate (405) is provided with a locking protrusion (4051), and the locking protrusion (4051) has a longitudinal telescopic structure, so that the transverse bracing beam connected to the longitudinal bracing tube is located between the locking protrusion (4051) and the limiting baffle (404).

5. The automobile seat frame welding device according to claim 3, characterized in that: The lateral positioning component (4) further comprises: A pressing plate (13) is located above the accommodating groove (402). When the cross bracing beam is placed in the accommodating groove (402), the pressing plate (13) is used to position the cross bracing beam. The front end of the pressing plate (13) is butted against an elastic positioning plate (14). The positioning plate (14) has a bending angle so that the cross bracing beam butted against the longitudinal bracing tube is located between the bending angles of the limiting baffle (404) and the positioning plate (14).

6. The automobile seat frame welding device according to claim 3, characterized in that: The lateral positioning component (4) further comprises: A bottom card slot (407), wherein the bottom card slot (407) is arranged on the tray (401), and the bottom card slot (407) is used to allow the sliding card strip (405) to be inserted; A return spring component (409) is located in the bottom card slot (407). The return spring component (409) is connected to the slide card strip plate (405) and the tray (401) respectively. The return spring component (409) applies a return force to the slide card strip plate (405).

7. The automobile seat frame welding device according to claim 3, characterized in that: A movable positioning plate (504) is provided on the processing platform (5), a notch groove (5041) is provided at the center of the positioning plate (504), a magnetic attraction component is fixed in the notch groove (5041), a matching portion (406) may be provided in the notch groove (5041), so that the magnetic attraction component is coupled with the matching portion (406), and the matching portion (406) is fixed on the sliding card strip (405).

8. The automobile seat frame welding device according to claim 1, characterized in that: The longitudinal positioning component (3) comprises: Support arms (303), wherein there are a plurality of support arms (303), and the support arms (303) are used to support the longitudinal support tubes; A central disk (301), wherein the central disk (301) is connected to a supporting arm (303), and when the central disk (301) rotates, the supporting arm (303) is driven to pass through a central opening (501) on the processing platform (5); A transmission disk (304) is connected to the central disk (301), and when the transmission disk (304) rotates, it provides power to the side thrust transmission assembly (7).

9. The automobile seat frame welding device according to claim 7, characterized in that: An auxiliary positioning plug-in is provided on the processing platform (5), and the auxiliary positioning plug-in is used to lock the positions of the center plate (301) and the supporting arm (303).

10. The automobile seat frame welding device according to claim 8, characterized in that: The central disk (301) is connected to a locking chuck disk (308). An external clamping assembly is arranged inside the central disk (301). The external clamping assembly is clamped with the locking chuck disk (308). When the external clamping assembly is separated from the locking chuck disk (308), the locking chuck disk (308) can rotate independently.

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