Automobile seat frame welding device

Abstract

The present invention relates to the field of automobile seat processing technology, specifically a automobile seat frame welding device, which is provided with a processing platform with a central opening; a longitudinal positioning component is provided on the side of the processing platform, and the longitudinal positioning component enables the longitudinal support tube to be located above the processing platform after passing through the central opening; a transverse positioning component is provided on the processing platform, and the transverse support beam is placed on the transverse positioning component, and the longitudinal positioning component is connected to the transverse positioning component through a side push transmission component; compared with the existing technology, the present invention can control the position of the longitudinal support tube through the longitudinal positioning component, and drive the transverse support beam to move toward the longitudinal support tube through the transverse positioning component. During this process, the longitudinal support tube and the transverse support beam are perpendicular to the length direction, and finally the transverse support beam and the longitudinal support tube can be docked to form a base frame, and then the base frame located on the processing platform can be welded by a welding mechanism, without manually assembling the base frame one by one, and there is no need to move the base frame before welding the base frame.

Description

Technical Field

[0001] The 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] The car seat frame is mainly composed of the base frame and the backrest frame. During the production process, both need to be assembled and welded. In particular, the base frame mainly plays a bearing role. Figure 1 As shown, it is generally composed of two horizontal support beams 2 and two longitudinal support tubes 1 to form a circular frame structure, so during the welding process of the base frame, the various parts need to be assembled.

[0003] In traditional technology, the transverse bracing beam 2 and the longitudinal bracing tube 1 are generally preliminarily docked to form a base frame, and then the base frame is moved to a welding station, and the connection between the transverse bracing beam 2 and the longitudinal bracing tube 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 preliminarily docked base frame may be easily deformed, thereby affecting the welding quality. It may even be easy for the preliminarily docked base frame to disintegrate due to factors such as bumps, and it needs to be re-docking at this time, affecting work efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a car seat frame welding device for solving the efficiency and quality problems of traditional technology in the welding operation of the car seat frame.

[0005] To achieve the above-mentioned object, the present invention adopts a technical solution, which is a welding device for an automobile seat frame, comprising: a processing platform provided with a central opening; a longitudinal positioning assembly provided on the side of the processing platform, the longitudinal positioning assembly causing the longitudinal bracing tube to be located above the processing platform after passing through the central opening; a transverse positioning assembly provided on the processing platform, a transverse bracing beam placed on the transverse positioning assembly, the longitudinal positioning assembly being connected to the transverse positioning assembly via a side-thrust transmission assembly, the longitudinal positioning assembly controlling the transverse positioning assembly to move toward or away from the longitudinal bracing tube, causing the transverse bracing beam to dock with the longitudinal bracing tube to form a base frame, the base frame being located on the processing platform;

[0006] It also includes a welding mechanism, which is used to weld the base frame on the processing platform.

[0007] Furthermore, the side thrust transmission assembly includes a side thrust arm and a driving arm. The side thrust arm is connected to the longitudinal positioning assembly, and the longitudinal positioning assembly controls the side thrust arm to perform linear reciprocating motion. The driving arm is connected to the side thrust arm and the transverse positioning assembly, and the side thrust arm controls the swing of the driving arm to move the transverse positioning assembly.

[0008] 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 distance between the limit baffle and the single-sided opening end of the receiving groove.

[0009] Furthermore, a locking protrusion is provided on the sliding strip plate, and the locking protrusion has a longitudinal telescopic structure. The transverse bracing beam connected to the longitudinal bracing tube is located between the locking protrusion and the limiting baffle.

[0010] 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 docked with an elastic positioning plate. The positioning plate has a bending angle. The cross bracing beam docked with the longitudinal bracing tube is located between the limiting baffle and the bending angle of the positioning plate.

[0011] 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.

[0012] 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 component is fixed in the notch groove, a matching part is provided on the sliding plate, the matching part can enter the notch groove, and the magnetic component is coupled with the matching part.

[0013] Furthermore, the longitudinal positioning assembly includes a center disk and a transmission disk. Several supporting arms are provided on the center disk. The longitudinal support tube is clamped on the supporting arms. When the center disk rotates, the supporting arms are driven to pass through the center opening on the processing platform; the transmission disk is connected to the center disk through the center shaft, and provides power to the side push transmission assembly when the transmission disk rotates.

[0014] 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.

[0015] Furthermore, a center opening is provided on the center disk, and a locking chuck is provided in the center opening. The locking chuck is connected to the center disk through an external card component. When the external card component is separated from the locking chuck, the locking chuck can rotate independently.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the longitudinal bracing tubes and the transverse bracing beams are placed on the longitudinal positioning assembly and the transverse positioning assembly respectively, and then the position of the longitudinal bracing tubes is controlled by the longitudinal positioning assembly, while the transverse bracing beams are driven to move toward the longitudinal bracing tubes by the transverse positioning assembly. During this process, the longitudinal bracing tubes and the transverse bracing beams are perpendicular to each other in the length direction, and finally the transverse bracing beams and the longitudinal bracing tubes can be butted together to form a base frame, and then the base frame located on the processing platform can be welded by a welding mechanism, without the need to manually assemble the base frames one by one, and without the need to move the base frame before welding.

[0017] When welding the base frame, the transverse bracing beam welded to the longitudinal bracing tube is located between the positioning protrusion and the limiting baffle. At this time, the transverse bracing beam has greater stability and can effectively reduce welding deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the base frame structure of a conventional automobile seat;

[0019] Figure 2 Schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 3 This is a schematic structural diagram of a longitudinal positioning assembly according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the auxiliary positioning plug-in structure according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic structural diagram of a lateral positioning assembly according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the connection structure between the side thrust transmission assembly and the lateral positioning assembly according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the center disk structure of an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the locking chuck structure according to an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the connection of external card components according to an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the processing platform structure according to an embodiment of the present invention;

[0028] Figure 11 This is a schematic diagram of the connection between the tray and the limit baffle according to an embodiment of the present invention;

[0029] Figure 12A schematic diagram of a sliding card strip according to an embodiment of the present invention;

[0030] Figure 13 This is a schematic diagram of the connection between the tray and the sliding strip board according to an embodiment of the present invention;

[0031] Figure 14 This is a schematic diagram of the positioning plate structure according to an embodiment of the present invention;

[0032] Figure 15 This is a schematic diagram of a first structural connection between a transmission plate and a thrust arm in an embodiment of the present invention;

[0033] Figure 16 This is a schematic diagram of the second structure of the connection between the transmission plate and the side thrust arm in an embodiment of the present invention.

[0034] Among them, 1-longitudinal support tube, 2-transverse support beam, 3-longitudinal positioning assembly, 301-center disk, 3011-positioning pit, 3012-displacement port, 3013-center port, 3014-external clamp, 3015-screw, 3016-transmission gear, 3017-linking ring, 3018-circular ring body, 302-side bracket, 303-support arm, 304-transmission disk, 3041-guide groove, 30411-feed section, 30412-return section, 305-auxiliary plate, 306-insertion rod, 307-center shaft, 308-locking chuck, 3081-matching groove, 3082-inner card slot, 4-transverse positioning assembly, 401-tray, 4 02-accommodating groove, 403-slider, 404-limit baffle, 405-slide plate, 406-matching part, 407-bottom card slot, 4051-locking protrusion, 409-reset spring, 5-processing platform, 501-center opening, 502-slide slot, 503-side notch, 504-positioning plate, 5041-notch slot, 6-welding mechanism, 7-side push transmission assembly, 701-side push arm, 7011-straight arm rod, 7012-vertical rod, 702-moving arm, 9-reference plate, 912-buffer rod, 913-guide rod, 10-support arm, 11-feed push rod, 111-connecting rod, 12-tension spring, 13-pressing sheet, 14-locking sheet. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the 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 part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the 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 making creative work are within the scope of protection of the present invention. In the embodiments, the components of the embodiments of the present application generally described and shown in the 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 drawings is not intended to limit the scope of the application for which protection is sought, but merely represents selected embodiments of the present application.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections; electrical connections; hydraulic connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0037] See Figure 1 As shown, the base frame of the car seat is composed of two longitudinal support tubes 1 and two transverse support beams 2, which need to be assembled into a "well"-shaped frame first and then the frame is welded.

[0038] See Figure 2 and Figure 10 As shown, the present application provides a car seat frame welding device for assembling and welding 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 through-holes of the longitudinal support tube 1 and the transverse support beam 2 are aligned. Then, the transverse positioning component 4 is used to control the transverse support beam 2 to move toward the longitudinal tube support, and finally the longitudinal tube support 1 passes through the through-hole on the transverse support beam 2, and then the assembled base frame can be welded by the welding mechanism 6.

[0039] The device also includes a processing platform 5, which is used to assist the longitudinal component in positioning the longitudinal support tube 1, and at the same time, it plays a bearing role for the transverse positioning component 4. Specifically, a center opening 501 is provided on the processing platform 5, and the longitudinal positioning component 3 is located on the side of the center opening 501. The longitudinal positioning component 3 can drive the longitudinal support tube 1 to pass through the center opening 501, and then lock the position of the longitudinal support tube 1, and the transverse positioning component 4 is connected to the processing platform 5. There are two transverse positioning components 4, and the center opening 501 is located between the two transverse positioning components 4. The two transverse positioning components 4 can move toward the center opening 501. At this time, the position of the transverse bracing beam 2 is adjusted so that the longitudinal support tube 1 passes through the through-holes on the transverse bracing beam 2. After the welding of the base frame is completed, the two transverse positioning components 4 are controlled to move away from the center opening 501, and then the welded base frame is removed from the processing platform 5.

[0040] See Figure 2 and Figure 3 As shown, the longitudinal positioning assembly 3 includes a rotatable center disk 301, and side brackets 302 are provided on both sides of the center disk 301. The center disk 301 is connected to the side brackets 302 through a central shaft 307. A plurality of supporting arms 303 are fixed on the center disk 301, and the longitudinal support tube 1 is clamped on the supporting arms 303. The plurality of supporting arms 303 are arranged in a circular array around the central axis of the center disk 301. Two longitudinal support tubes 1 are placed on each supporting arm 303. When the center disk 301 rotates, the supporting arms 303 are driven to pass through the central opening 5 on the processing platform 5. 01 passes through. It should be noted that the center height of the center disk 301 is less than the horizontal height of the processing platform 5. That is, when the center disk 301 rotates to a certain supporting arm 303 passes through the center opening 501 and is in a horizontal state, the supporting arm 303 is located above the processing platform 5. There is a certain longitudinal distance between the supporting arm 303 and the upper surface of the processing platform 5. At this time, the center disk 301 needs to be locked to keep the supporting arm 303 locked in position to ensure that when the horizontal positioning component 4 drives the horizontal bracing beam 2 to translate, the longitudinal bracing tube 1 can be docked with the horizontal bracing beam 2;

[0041] For details, see Figure 4 As shown, a number of positioning pits 3011 are provided on the center disk 301, and an auxiliary positioning plug-in is provided on the processing platform 5. The auxiliary positioning plug-in includes an auxiliary plate 305 located on the side of the center opening 501, and an insertion rod 306 passes through the auxiliary plate 305. The insertion rod 306 is connected to a power push rod. When a positioning pit 3011 on the center disk 301 is about to be aligned with the insertion rod 306, the insertion rod 306 can be controlled to translate toward the center disk 301 through the extension and retraction of the power push rod, and the end of the insertion rod 306 can be inserted into the positioning pit 3011. At this time, the center disk 301 cannot rotate, thereby locking the position of the support arm 303 to facilitate the subsequent docking of the cross bracing beam 2 with the pipe fittings on the support arm 303.

[0042] See Figure 2 and Figure 5 As shown, the two lateral positioning components 4 move synchronously, but in opposite directions. The lateral positioning component 4 includes a tray 401 arranged on the processing platform 5. In this embodiment, the end of the tray 401 close to the center opening 501 is called the inner end, and the end away from the center opening 501 is called the outer end. The tray 401 has a receiving groove 402, which 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-sided opening, which is located at the inner end of the tray 401. The cross-section of the receiving groove 402 is a "convex" shape, and the cross-bracing beam 2 can be formed by the single-sided opening of the receiving groove 402. The opening is moved in, so that multiple cross-bracing beams 2 are arranged in the accommodating groove 402, and a slider 403 is fixed to the outer end of the tray 401. There are two sliders 403. At the same time, two slide grooves 502 are provided on the processing platform 5. The two slide grooves 502 are parallel to each other, and the extension lines of the slide grooves 502 are perpendicular to the central opening 501. The two sliders 403 are respectively located in the corresponding slide grooves 502. When the tray 401 approaches or moves away from the central opening 501, the slider 403 moves in the corresponding slide groove 502. At this time, the tray 401 can be prevented from tilting during the movement, so that the longitudinal support tube 1 can be accurately inserted into the through-hole of the cross-bracing beam 2.

[0043] When controlling the cross bracing beam 2 to connect with the longitudinal bracing tube 1, the pallet 401 needs to be translated on the processing platform 5 toward the center opening 501. During this process, several cross bracing beams 2 are driven to move synchronously. Therefore, when the longitudinal bracing tube 1 passes through the through-hole on the cross bracing beam 2, several cross bracing beams 2 located in the accommodating groove 402 are all connected to the longitudinal bracing tube 1. At this time, it is necessary to press down the other cross bracing beams 2 and then control the pallet 401 to translate in the direction away from the center opening 501. Finally, only the outermost cross bracing beam 2 is left connected to the longitudinal bracing tube 1, and then the welded base frame can be removed.

[0044] In this application, the lateral positioning component 4 is moved closer to or further away from the central opening 501, which is controlled by the longitudinal positioning component 3. Figure 2 and Figure 3As shown, this longitudinal positioning assembly 3 also includes two transmission discs 304, both of which are parallel to the center disc 301. Side notches 503 are provided on the processing platform 5, and the transmission discs 304 are located in the side notches 503. The two transmission discs 304 are connected to the center shaft 307. When the center disc 301 is not locked, the center shaft 307 can drive the transmission discs 304 and the center disc 301 to rotate synchronously. A side push transmission assembly 7 is connected between the transmission disc 304 and the tray 401 of the transverse positioning assembly 4. When the transmission disc 304 rotates, the side push transmission assembly 7 applies a thrust to the tray 401, so that the tray 401 drives the cross bracing beam 2 to move toward the center opening 501. After a group of cross bracing beams 2 are docked with the pipe fittings, the transmission disc 304 can continue to rotate. At this time, the tray 401 moves away from the center opening 501, that is, the transmission disc 304 can control the tray 401 to perform linear reciprocating motion through the side push transmission assembly 7.

[0045] See Figure 6 As shown, the side push transmission assembly 7 includes a side push arm 701 arranged 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 to the driving arm 702 through the vertical rod 7012, the side push arm 701 is connected to the processing platform 5 through the limiting hanging tube, at this time the side push arm 701 is in a horizontal state, and the driving arm 702 is axially connected to the processing platform 5, the driving arm 702 is provided with a waist-shaped opening extending along the length direction, there are two waist-shaped openings on the driving arm 702, and the two waist-shaped openings are respectively close to the two ends of the driving arm 702, the vertical rod 701 2 passes through the waist-shaped opening on the lever arm 702 near the rear end. Initially, the lever arm 702 is in an inclined state. When the side push arm 701 performs a linear reciprocating motion, the vertical rod 7012 moves in the waist-shaped opening on the lever arm 702, causing the lever arm 702 to swing. The axial connection between the lever arm 702 and the processing platform 5 is located between the two waist-shaped openings. The lever arm 702 is also slidably connected to the tray 401, and the connection is located in the waist-shaped opening near the front end of the lever arm 702. When the transmission disk 304 rotates, it controls the side push arm 701 to perform a linear reciprocating motion, thereby driving the lever arm 702 to swing, thereby moving the tray 401 toward the center opening 501.

[0046] It should be noted that, since the center disk 301 is locked when the control tray 401 moves toward the center opening 501, the center disk 301 cannot rotate at this time, and the movement of the tray 401 depends on the rotation of the transmission disk 304, so refer to FIG. Figure 3 、 Figure 7 and Figure 8As shown, the transmission disk 304 is fixedly connected to the central shaft 307, the central disk 301 is connected to the central shaft 307 through the locking chuck 308, the locking chuck 308 is fixed on the central shaft 307, and a central opening 3013 is provided on the central disk 301. At this time, the central disk 301 is annular, and the locking chuck 308 is located in the central opening 3013 of the central disk 301. A cavity is provided in 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 is connected to the cavity, and the displacement opening 3012 extends along the axial direction of the central disk 301. An outer card component is provided in the cavity of the central disk 301, and several outer card heads 3014 on the outer card component are extended from the displacement opening 3012, and a matching groove 3013 is provided on the locking chuck 308. 81. The mating groove 3081 extends along the circumferential direction of the locking chuck 308. Several groups of inner snap grooves 3082 are arranged in the mating groove 3081. After the locking chuck 308 and the center disk 301 are assembled, the outer snap head 3014 on the outer snap assembly is adapted to the inner snap groove 3082. At this time, the center disk 301 and the locking chuck 308 can rotate at the same time. After the auxiliary positioning plug-in locks the position of the center disk 301, the outer snap assembly inside the center disk 301 moves axially, thereby separating the outer snap head 3014 on the outer snap assembly from the locking chuck 308. At this time, the center disk 301 cannot rotate, while the locking chuck 308 can continue to rotate. Therefore, the locking chuck 308 and the transmission disk 304 can be driven to rotate at the same time by the center shaft 307, so that the transmission disk 304 and the side thrust transmission assembly 7 can work together.

[0047] For details, see Figure 9 As shown, a lead screw 3015 is provided in the cavity of the center disk 301, and the lead screw 3015 extends along the axial direction of the center disk 301, and both ends of the lead screw 3015 pass through the center 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 center disk 301. A drive cover can be installed on one side of the center disk 301. The drive cover is annular, and a micro motor is installed in the drive cover. The micro motor is connected to a lead screw 3015, and a transmission gear 3016 is fixed to the end of each lead screw 3015. A linkage ring 3017 is provided in the drive cover. The linkage ring 3017 is connected to the drive cover. There are convex teeth on the inner circumference of 017. At this time, the linkage ring 3017 is engaged with the transmission gear 3016 on the three lead screws 3015 at the same time, 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 outer clamping assembly is controlled to move. The outer clamping assembly includes an annular ring body 3018, and the ring body 3018 is connected to the three lead screws 3015. The outer clamping head 3014 is fixed on the inner circumference of the ring body 3018, and the outer clamping head 3014 at this time extends along the radial direction of the ring body 3018.

[0048] An infrared sensor can be set on the processing platform 5. When the infrared sensor senses the support arm 303, the support arm 303 is in a horizontal state. At this time, the infrared sensor sends a control signal to the central console, and the central console sends a signal to the power push rod. The power push rod controls the movement of the insertion rod 306. A sensor is set at the end of the insertion rod 306. When the insertion rod 306 is inserted into the positioning pit 3011, an electrical signal is sent to the micro motor to start the micro motor, thereby controlling the screw 3015 to rotate and drive the outer card assembly to move, and finally separate the outer card head 3014 from the lock chuck 308, so that the transmission disk 304 can continue to rotate, and control the cross bracing beam 2 to move toward the longitudinal bracing tube 1;

[0049] After completing the welding of a group of base frames, the welding mechanism 6 is controlled to move to an area away from the center opening 501. At this time, the center console sends a control signal to the pneumatic push rod to retract the pneumatic push rod, and controls the micro motor to drive in reverse to reset the outer chuck 3014, and re-match the center disk 301 with the locking chuck 308. Then, the center axis rotation is continued to be controlled to move the base frame after welding through the support arm 303. Subsequently, other support arms 303 will re-move the other longitudinal support tubes 1 to the processing position.

[0050] When the transverse positioning assembly 4 is used to control the movement of the transverse bracing beam 2 toward the longitudinal bracing tube 1, the displacement of the transverse bracing beam 2 needs to be controlled to avoid that the transverse bracing beam 2 does not meet the design requirements after docking with the longitudinal bracing tube 1. Figures 11 to 14As shown, the transverse positioning assembly 4 also includes a limit baffle 404, which is connected to the tray 401 through a sliding strip 405. There is a spacing between the limit baffle 404 and the single-side open end of the accommodating groove 402. After the cross bracing beam 2 is located within the spacing, it can be easily taken out. A movable positioning disk 504 is provided in the sliding groove 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 provided at the center of the positioning disk 504, and a magnetic component is fixed in the notch groove 5041. A matching portion 406 is provided on the sliding strip 405, and the matching portion 406 can enter the notch groove 5041. When the matching portion 406 and the magnetic component on the positioning disk 504 are aligned, the magnetic component can be fixed in the notch groove 5041. When the suction components are aligned, the matching portion 406 is adsorbed on the magnetic component, and the sliding strip 405 is positioned at this time, that is, the position of the positioning plate 504 is pre-adjusted at the initial stage, and then when the transverse positioning component 4 controls the cross bracing beam 2 to approach the center opening 501, the position of the limit baffle 404 is limited through the cooperation of the matching portion 406 and the magnetic component to prevent the longitudinal support tube 1 from being excessively inserted through the through-hole on the cross bracing beam 2. At the same time, a number of notches are provided on the limit baffle 404, and the through-holes on the cross bracing beam 2 correspond to the notches on the limit baffle 404. After the tray 401 moves toward the center opening 501, the longitudinal support tube 1 on the support arm 303 can pass through the notch on the limit baffle 404 and then enter the through-hole on the cross bracing beam 2, thereby forming an assembly of the cross bracing beam 2 and the longitudinal support tube 1.

[0051] Since it is necessary to clamp the other cross bracing beams 2 and control the tray 401 to move in a direction away from the center opening 501, only the outermost cross bracing beam 2 is retained to be connected to the longitudinal bracing tube 1. Therefore, when the control tray 401 moves in a direction away from the center opening 501, the limit baffle 404 cannot move. Therefore, 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 becomes larger, the sliding card strip 405 is located in the bottom card slot 407. The part is reduced, and a locking protrusion 4051 is further provided on the sliding strip 405, and the locking protrusion 4051 has a longitudinal telescopic structure. The longitudinal telescopic structure includes the following implementation structure: the locking protrusion can be composed of an upper and a lower part, and the upper and lower parts are both flat, and the upper part is sleeved with the lower part, and the lower part can be fixed on the sliding strip 405, and an elastic member is provided between the upper and lower parts. When downward pressure is applied to the upper part, the upper part can be moved downward, or a buried groove can be provided on the sliding strip 405, and the lower part is fixed in the buried groove. The transverse bracing beam 2 connected to the longitudinal bracing tube 1 is located between the locking protrusion 4051 and the limiting baffle 404. Therefore, after the sliding card plate 405 is positioned, the other transverse bracing beams 2 can be pressed to control the tray 401 to be pulled back in the direction away from the central opening 501. In this way, only the transverse bracing beam 2 at the outermost position is left connected to the tube body. After the transverse bracing beam 2 and the longitudinal bracing tube 1 are welded, the formed base frame can be removed.

[0052] Then, the next group of support arms 303 are passed through the center opening 501 by the rotation of the center disk 301, and this group of support arms 303 is in a horizontal state. However, in this process, this group of support arms 303 is hindered by the limit baffle 404. Therefore, after controlling the tray 401 to move away from the center opening 501 and removing the welded base frame, it is necessary to move the limit baffle 404 toward 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, so that the limit baffle 404 can be moved to the side of the center opening 501, and will not affect the passage of the support arms 303 through the center opening 501.

[0053] Specifically, a return spring 409 is provided in the bottom card slot 407, and the return spring 409 connects the slide card strip 405 with the tray 401. The return spring 409 is a spring that generates a restoring force after being stretched. In this way, after the base frame after welding and finalization is removed, the return spring 409 exerts a restoring force on the slide card strip 405, so that the slide card strip 405 and the limit baffle 404 move simultaneously in a direction away from the center opening 501. A flat strip opening is provided in the accommodating groove 402, and the flat strip opening is connected to the bottom The card slot 407 is connected, and when the limit baffle 404 moves toward the direction close to the tray 401, the card protrusion 4051 enters into the flat bar mouth, and it can pass under a certain cross beam 2 located in the accommodating groove 402 and then bounce up again, thereby re-positioning the cross beam 2. When the tray 401 moves toward the center opening 501 again, the limit baffle 404 continues to be limited by the positioning plate 504, so that the reciprocating movement of the tray 401 can be repeated, thereby realizing the continuous loading action of the cross beam 2.

[0054] However, since there are a large number of cross bracing beams 2 initially located in the accommodating grooves 402, after a base frame is assembled, welded and removed, the number of cross bracing beams 2 in the accommodating grooves 402 will decrease. As the base frames are assembled, welded and removed one by one, the cross bracing beams 2 in the accommodating grooves 402 become fewer and fewer, and the limiting baffles 404 cannot enter the accommodating grooves 402. Therefore, a feeding assembly is provided on the tray 401, which can push the cross bracing beams 2 in the accommodating grooves 402 toward the limiting baffles 404.

[0055] See Figure 5 As shown, the feeding assembly includes a reference plate 9 fixed to the outer end of the tray 401, and a support arm 10 extending vertically to both sides is fixed on the reference plate 9, and an advance push rod 11 passes through the support arm 10, and the advance push rod 11 passes through the tray 401, and the inner end of the advance push rod 11 is located in the accommodating groove 402, and a tension spring 12 is connected between the outer end of the advance push rod 11 and the support arm 10. When all the cross-bracing beams 2 are located in the loading accommodating groove 402, the tension spring 12 is at the maximum extension amount, but due to the setting of the return spring member 409, the elastic force of the tension spring 12 is not enough to move the limit baffle 404 in the direction away from the tray 401. When the number of cross-bracing beams 2 in the accommodating groove 402 is reduced, under the action of the elastic force of the tension spring 12, the cross-bracing beam 2 located in the accommodating groove 402 will move toward the limit baffle 404, thereby realizing the feeding of the cross-bracing beam 2;

[0056] At the same time, a pressing piece 13 is also provided on the reference plate 9, and 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, and the front end of the pressing piece 13 is docked with an elastic positioning piece 14. The positioning piece 14 is a "V"-shaped curved structure. At the beginning, 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 blocks the unilateral opening of the accommodating groove 402, and the end of the positioning piece 14 is placed 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, wherein the cross bracing beam 2 docked with the longitudinal bracing tube 1 It 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 locking piece 14. After the control tray 401 moves in the direction away from the center opening 501, the locking piece 14 loses the support of the limiting baffle 404 and will rebound downward. At this time, the bending angle of the locking piece 14 separates the first cross bracing beam from the second cross bracing beam, thereby allowing the second cross bracing beam in the accommodating groove 402 to move in the direction away from the center opening 501. When the base frame is moved out, the limiting baffle 404 is reset under the action of the restoring force of the reset spring member 409, so that the end of the locking piece 14 is re-placed on the limiting baffle 404, and the locking piece 14 will not affect the feeding of the cross bracing beam 2 in the accommodating groove 402.

[0057] Finally, it should be noted that there are two connection structures between the transmission plate 304 and the front end of the side thrust arm 701 in this application:

[0058] The first connection structure, see Figure 15 As shown, a guide groove 3041 is provided on the transmission disk 304. Since the side push arm 701 includes a straight arm rod 7011 and a vertical rod 7012, the guide groove 3041 is connected to the straight arm rod 7011. When the transmission disk 304 rotates, the straight arm rod 7011 can be driven to perform linear reciprocating motion. Specifically, the guide groove 3041 is composed of a number of arc-shaped segment grooves, each segment groove includes a feed segment 30411 and a return segment 30412. A guide rod is fixed to the front end of the straight arm rod 7011, and a guide wheel is provided on the guide rod. The guide wheel is located in the guide groove 3041. When the front end of the straight arm rod 7011 moves in the feed segment 30411, the tray 401 will be controlled to move toward the center opening 501 through the lever 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 center opening 501 through the lever arm 702. Several segment grooves are arranged around the central axis of the transmission disk 304 and connected in sequence, eventually forming a closed loop of the guide groove 3041. When the transmission disk 304 rotates, the straight arm rod 7011 can move back and forth in a straight line, thereby driving the tray 401 to move closer to or away from the central opening 501.

[0059] In this embodiment, when the front end of the straight arm 7011 moves from the starting point to the end point of the segment groove, the tray 401 completes an action of approaching and moving away from the central opening 501.

[0060] The second connection structure, see Figure 16 As shown, an eccentric shaft is provided on the transmission disk 304, and a connecting rod 111 is hinged to the eccentric shaft. The connecting rod 111 is hinged to 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 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 center opening 501.

[0061] Also, see Figure 5 As shown, in the present application, a blind hole can also be provided on the reference plate 9, and the blind hole extends from the outer end of the reference plate 9 to the tray 401. The reference plate 9 is connected to a buffer rod 912 through the blind hole, and the inner end of the buffer rod 912 is located in the blind hole. The buffer rod 912 is connected to 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 guide rod 913 is fixed to the outside of the end of the buffer rod 912, and the guide rod 913 passes through the waist-shaped opening near the front end of the lever arm 702, thereby increasing the control over the moving stroke of the tray 401.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based primarily on the scope of protection of the claims.

Claims

1. A car seat frame welding device, 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), the transverse positioning assembly (4) being arranged on the processing platform (5), and the transverse positioning assembly (4) being used to carry the cross bracing beam; The lateral positioning assembly (4) comprises: A tray (401) is provided with a receiving groove (402) on the tray (401), and the receiving groove (402) has a single-side opening, so that the cross-bracing beam can be placed in the receiving groove (402) and the cross-bracing beam can be removed from the single-side opening; A limiting baffle (404), wherein a distance is provided between the limiting baffle (404) and the single-side open end of the accommodating groove (402); A sliding strip plate (405), wherein the sliding strip plate (405) is fixedly connected to the limit baffle, and the sliding strip plate (405) is movably connected to the tray; A pressing piece (13), the pressing piece (13) is located above the accommodating groove (402), and when the cross bracing beam is placed in the accommodating groove (402), the pressing piece (13) is used to position the cross bracing beam, and the front end of the pressing piece (13) is connected to an elastic positioning piece (14), and the positioning piece (14) has a bending angle, so that the cross bracing beam connected to the longitudinal bracing tube is located between the bending angle of the limiting baffle (404) and the positioning piece (14); A side thrust transmission assembly (7), wherein the side thrust transmission assembly (7) is movably connected to the lateral positioning assembly (4); 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); a shifting arm (702), the shifting arm (702) being connected to the side thrust arm (701) and the lateral positioning assembly (4) respectively, so that the shifting arm (702) is controlled by the side thrust arm (701) to swing, thereby moving the lateral positioning assembly (4); A longitudinal positioning assembly (3), wherein the longitudinal positioning assembly (3) allows the longitudinal support tube to pass through the central opening (501) and be positioned above the processing platform (5), 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 toward 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 docked to form a base frame, and the base frame is located on the processing platform (5); The longitudinal positioning component (3) comprises: Support arms (303), there are a plurality of support arms (303), and the support arms (303) are used to support the longitudinal support tube; A central disk (301), wherein the central disk (301) is connected to the supporting arm (303), and when the central disk (301) rotates, the supporting arm (303) is driven to pass through the central opening (501) on the processing platform (5); A transmission disc (304), wherein the transmission disc (304) is connected to the central disc (301), and when the transmission disc (304) rotates, it provides power to the side push transmission assembly (7); A welding mechanism (6) is used to weld the base frame on the processing platform (5).

2. The automobile seat frame welding device according to claim 1, characterized in that: The sliding 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).

3. The automobile seat frame welding device according to claim 1, characterized in that: The lateral positioning assembly (4) further comprises: A bottom card slot (407), the bottom card slot (407) being provided on the tray (401), and the bottom card slot (407) being used for inserting the sliding card strip (405); A return spring member (409) is located in the bottom card slot (407), and the return spring member (409) is connected to the slide card strip (405) and the tray (401) respectively. The return spring member (409) applies a return force to the slide card strip (405).

4. The automobile seat frame welding device according to claim 1, 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 component is fixed in the notch groove (5041), a matching portion (406) can be provided in the notch groove (5041), so that the magnetic component is coupled with the matching portion (406), and the matching portion (406) is fixed on the sliding strip plate (405).

5. The automobile seat frame welding device according to claim 4, 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 central disk (301) and the supporting arm (303).

6. The automobile seat frame welding device according to claim 5, characterized in that: The central disk (301) is connected to a locking chuck (308). An external clamping assembly is provided in the central disk (301). The external clamping assembly is clamped to the locking chuck (308). When the external clamping assembly is separated from the locking chuck (308), the locking chuck (308) can rotate independently.

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