Automobile traction seat frame assembling and welding positioning device and positioning method

Abstract

The invention discloses an automobile traction seat frame assembly welding positioning device and a positioning method.The automobile traction seat frame assembly welding positioning device comprises a workbench, supporting legs are fixedly installed at the four corners of the bottom end of the workbench, a fixed positioning assembly is fixedly installed at the end of one side of the top face of the workbench, a vertical sliding groove is formed in the middle of the other side of the top face of the workbench in an inwards-concave mode, and a lead screw is rotationally installed in the vertical sliding groove; one end of the screw rod rotatably extends out of the rear end part of the workbench and is fixedly connected with a crank I, the outside of the screw rod is connected with a sliding block I through a thread structure, the sliding block I is slidably arranged in the vertical sliding groove, the top end of the sliding block I is fixedly connected with the bottom end of a positioning block, and the top end of the positioning block is fixedly connected with a support positioning mechanism; transverse sliding grooves are formed in the two sides, close to the fixed positioning assembly, of the top face of the workbench in an inwards-concave mode respectively, threaded rods are rotationally installed in the transverse sliding grooves respectively, the threaded rods are connected with positioning and pressing mechanisms through threaded structures respectively, the positioning and pressing mechanisms are arranged in the transverse sliding grooves in a sliding mode, and the threaded rods are in transmission connection with one end of an adjusting rotating shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile towing seat positioning, in particular to a kind of automobile towing seat frame assembly welding positioning device and positioning method. BACKGROUND

[0002] Towing seat is a kind of load-bearing parts used for towing semi-trailer of truck, and is usually arranged on the base of truck. The towing seat is connected with semi-trailer through locking mechanism to realize the function of connection and locking. The towing seat used at present is mostly saddle type, which is usually made by casting or stamping to obtain the blank of towing seat, and then processed by cutting, punching and polishing. After that, the processed parts are combined together by welding to ensure the integrity and firmness of the towing seat. After detection and coating, the towing seat is completed.

[0003] During the processing of towing seat, the frame of towing seat needs to be assembled and welded. For example, the patent with publication number CN218638884U discloses a kind of towing seat frame assembly welding positioner, which includes main body mechanism, multidirectional positioning clamping mechanism and adjusting mechanism. The multidirectional positioning clamping mechanism is located in the middle of the main body mechanism, and the adjusting mechanism is located on the outside of the main body mechanism. The main body mechanism includes fixed support plate and positioning groove. The positioning groove is fixedly arranged on the middle of the upper end of the fixed support plate. The multidirectional positioning clamping mechanism includes limiting sliding groove, electric push rod, adjusting clamping plate, fixed nut, adjusting screw, adjusting positioning plate and limiting sliding block. The limiting sliding groove is fixedly arranged on the front and rear ends of the positioning groove, and the electric push rod is fixedly installed on the left and right ends of the fixed support plate.

[0004] Although the positioner can realize multidirectional clamping and positioning of the frame of towing seat, when welding the support, the symmetrical supports need to ensure concentricity so that the two supports are in the same straight line during subsequent use. The traditional positioning device lacks positioning reference for the support, which easily leads to deviation of the concentricity of the support after welding, affecting the overall assembly precision and use stability of the towing seat. Therefore, the present application provides a kind of automobile towing seat frame assembly welding positioning device and positioning method to solve the above problems. SUMMARY

[0005] The present application aims to provide a kind of automobile towing seat frame assembly welding positioning device and positioning method to solve the problems raised in the background.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a kind of automobile towing seat frame assembly welding positioning device, including workbench, the bottom end four corners of the workbench are fixedly installed with support leg, the top surface one side end of the workbench is fixedly installed with fixed positioning assembly, the top surface other side middle part of the workbench is recessed with vertical sliding slot, the vertical sliding slot is rotatably installed with screw rod, one end of the screw rod is rotatably extended and fixedly connected with handle one at the rear end of workbench, the screw rod is connected with sliding block one by thread structure outside, the sliding block one is slidably arranged in vertical sliding slot, and the top end of the sliding block one is fixedly connected with the bottom end of positioning block, the top end of the positioning block is fixedly connected with support positioning mechanism; The top surface of the workbench is recessed with horizontal sliding slot near the two sides of fixed positioning assembly, respectively, the horizontal sliding slot is rotatably installed with threaded rod, respectively, the threaded rod is connected with positioning and pressing mechanism by thread structure, the positioning and pressing mechanism is slidably arranged in horizontal sliding slot, one end of the threaded rod is drivingly connected with adjusting shaft, the adjusting shaft is rotatably installed on the workbench, and the other end of the adjusting shaft is fixedly connected with handle two.

[0007] Preferably, the workbench is hollow and has a transmission cavity, opposite ends of the threaded rods are respectively fixedly connected with both ends of a connecting shaft, the connecting shaft is rotatably installed in the workbench, a middle part of the connecting shaft is fixedly sleeved with a worm gear, the worm gear is rotatably arranged in the transmission cavity, the worm gear is meshingly connected with a worm, and an end of the worm away from the handle two is fixedly connected with the adjusting shaft.

[0008] Preferably, the fixed positioning assembly includes L-shaped plates, a second screw knob, a pressing strip and wire sliding rods, the L-shaped plates are provided in three, one end of each of the three L-shaped plates is fixedly connected with one end of the top surface of the workbench, the other end of the L-shaped plate located in the middle is connected with the second screw knob by thread structure, the other end of each of the L-shaped plates located on both sides is slidably sleeved with a wire sliding rod, one end of each of the wire sliding rods is fixedly connected with one end surface of the pressing strip, and the other end surface of the pressing strip is rotatably connected with the end of the second screw knob.

[0009] Preferably, the positioning and pressing mechanism includes sliding blocks two, support seats, clamping arms, support sliding seats, guide seats, pressing assemblies and locking assemblies, the sliding blocks two are respectively slidably arranged in the horizontal sliding slots and connected with the threaded rods by thread structure, the top end of each of the sliding blocks two is fixedly connected with the support seat, opposite ends of the support seat are respectively hingedly connected with the clamping arms, the other end of each of the support seats is fixedly connected with the support sliding seat, the support sliding seat is slidably sleeved with the guide seat, the pressing assembly is mounted on one side of the top end of the guide seat, and the locking assembly is movably arranged on the other side of the guide seat, the clamping arm has a Y-shaped structure, and a gear slot is recessed in the inner wall of the bottom of the support sliding seat and is evenly arranged along the length direction of the support sliding seat.

[0010] Preferably, the pressing assembly comprises a base, a transmission connecting rod, a pressing connecting rod, a connecting block, an operating rod, a hinge seat two, a threaded knob one, a pressing disc, a hinge joint, the base is fixedly connected to the top end of the guide seat, one end of the base is hingedly connected to the transmission connecting rod, the other end of the transmission connecting rod is hingedly connected to one end of the pressing connecting rod, the other end of the pressing connecting rod is sleeved with the threaded knob one through a threaded structure, the bottom end of the threaded knob one is rotatably connected with the pressing disc, a hinge joint is arranged at the corner of the pressing connecting rod, the hinge joint is hingedly connected to the hinge seat two, the hinge seat two is fixedly connected to the top end of the support seat, one end of the connecting block is fixedly connected to the side end of the transmission connecting rod away from the base, and the other end of the connecting block is fixedly connected to the operating rod.

[0011] Preferably, the locking assembly comprises a push rod, a spring, a movable cavity, an anti-dropping block and a clamping block, the movable cavity is arranged on the side of the guide seat away from the pressing assembly, the anti-dropping block is sleeved and slid in the movable cavity, the bottom end of the anti-dropping block is fixedly connected with the clamping block, the clamping block is slid out of the movable cavity and is slidably connected with the tooth groove, one side end of the push rod is fixedly connected to the top end of the anti-dropping block, the other side of the push rod is slid out of the top of the guide seat, the spring is movably sleeved outside the push rod, the bottom end of the spring is fixedly connected to the top end of the anti-dropping block, and the other end of the spring is fixedly connected to the top inner wall of the movable cavity.

[0012] Preferably, the support positioning mechanism comprises a support frame, an adjusting screw rod, an adjusting knob, a movable block and a centering assembly, the bottom end of the support frame is fixedly connected with the positioning block, the adjusting screw rod is rotatably installed in the support frame, the top end of the adjusting screw rod is fixedly connected with the adjusting knob, the adjusting knob is rotatably connected to the top end of the support frame, the adjusting screw rod is sleeved with the movable block through a threaded structure, and the two ends of the movable block are respectively fixedly connected with the centering assembly.

[0013] Preferably, the centering assembly comprises a support screw rod, a center rod, a driven part, an abutting plate, an internally threaded ring, a support ring and a driving part, opposite ends of the support screw rod are respectively fixedly connected to the two ends of the movable block, the other end of the support screw rod is fixedly connected with the center rod in an axis line, the outer wall of the center rod is provided with a plurality of driven parts, one side of each of the plurality of driven parts away from the center rod is fixedly connected with one side of the abutting plate, the other side of each of the abutting plates is fixedly connected with one end of the driving part, the other end of each of the driving parts is fixedly connected with the outer wall of the support ring, the support ring is rotatably sleeved with the internally threaded ring, and the internally threaded ring is sleeved with the support screw rod through a threaded structure.

[0014] Preferably, the driving member comprises a hinged seat one, a driving link, a movable seat two, the hinged seat one is fixedly connected with the outer wall of the supporting ring, one end of the hinged seat one is hingedly connected with the driving link, the other end of the driving link is hingedly connected with the movable seat two, the movable seat two is fixedly connected with the inner side wall of the abutting plate, two driving members arranged in the same plane are parallel, the driving member comprises a fixed seat, a driven link, a movable seat one, the fixed seat is fixedly connected with the outer wall of the center rod, one end of the fixed seat is hingedly connected with the driven link, the other end of the driven link is hingedly connected with the movable seat one, the movable seat one is fixedly connected with the inner side wall of the abutting plate, at least three abutting plates are arranged in the circumferential direction, the driven links arranged in the same plane are arranged in parallel, and the adjacent driving link and driven link are arranged in symmetry.

[0015] The application also provides a positioning method of the automobile towing seat frame assembly welding positioning device. S1, the towing seat plate is placed on the top surface of the workbench; S2, the second handle is manually rotated, the second handle drives the adjusting shaft to rotate, the adjusting shaft drives the two threaded rods to synchronously rotate, and the threaded rods drive the positioning and pressing mechanisms to move in the transverse sliding groove, the two positioning and pressing mechanisms are close to each other, and then abut against the two ends of the towing seat plate, and the rotation of the second handle is stopped; S3, then the first handle is manually rotated, the first handle drives the screw rod to rotate, the screw rod drives the sliding block one to move in the vertical sliding groove, the sliding block one drives the fixed positioning block to be clamped into the towing pin hole of the towing seat plate, and the continuous movement of the sliding block one pushes the towing seat plate to move towards the fixed positioning assembly; S4, after the towing seat plate abuts against the fixed positioning assembly, the positioning block cooperates with the fixed positioning assembly to clamp the two ends of the towing seat plate, then the fixed positioning assembly is manually operated to press and fix one end of the towing seat plate; S5, the second handle is manually rotated again, the two threaded rods are synchronously rotated through the adjusting shaft, and then the positioning and pressing mechanisms are driven to clamp and limit the other two ends of the towing seat plate, finally, the other two ends of the towing seat plate are pressingly fixed through the cooperation of the positioning and pressing mechanisms and the workbench, at this moment, the four sides of the towing seat plate are clamped and fixed, and the three sides of the towing seat plate are pressingly fixed; S6, the supports are positioned through the manual operation of the support positioning mechanism, then the support positioning mechanism is operated to make the supports closely adhere to the towing seat plate, and coaxial positioning and fixing of the two supports are realized.

[0016] Compared with the prior art, the application has the following beneficial effects: 1. The positioning block is inserted into the traction pin hole of the traction seat plate. In conjunction with the fixed positioning component, the two ends of the traction seat plate are clamped and positioned. The positioning and clamping mechanisms move closer to each other to clamp and position the other two ends of the traction seat plate, ensuring the stability of the traction seat plate during subsequent welding work. 2. The fixed positioning component presses and fixes the end of the traction seat plate away from the traction pin hole, and works with the positioning and pressing mechanism to press and fix both ends of the traction seat plate, thereby achieving three-sided pressing and fixing of the traction seat plate. This ensures that the traction seat plate will not shift or shake during the assembly welding process, providing a stable foundation for subsequent welding operations. It can effectively improve the accuracy and efficiency of the traction seat frame assembly welding, ensure the accurate relative position between each component, and improve the overall structural strength and performance of the traction seat. 3. The support positioning mechanism uses a self-centering clamping and limiting mechanism to hold and limit the supports to be welded, ensuring the concentricity of the supports to be welded. By adjusting the knob, the adjusting screw is driven to rotate, which drives the movable block to rise and fall along the support frame, thereby adjusting the height position of the support and ensuring the tightness of the contact surface between the support and the traction seat plate. This provides a reliable positioning basis for the stable connection between the support and the traction seat plate in the subsequent welding process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top-view diagram of the rear structure of the present invention; Figure 3 This is a top-view diagram of the structure of the present invention from a frontal perspective; Figure 4 This is a schematic diagram of the positioning and clamping mechanism in this invention; Figure 5 This is a schematic cross-sectional view of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the support positioning mechanism in this invention; Figure 8 This is a schematic diagram of the structure after the traction seat plate of the present invention is placed.

[0018] As shown in the figure, the device comprises a workbench 1, transmission cavity 101, supporting legs 2, vertical sliding slot 3, sliding block one 4, positioning block 5, support positioning mechanism 6, supporting frame 61, adjusting screw rod 62, adjusting knob 63, movable block 64, centering assembly 65, supporting screw rod 651, center rod 652, driven part 653, fixed seat 6531, driven connecting rod 6532, movable seat one 6533, abutting plate 654, internal thread ring 655, supporting ring 656, driving part 657, hinged seat one 6571, driving connecting rod 6572, movable seat two 6573, screw rod 7, handle one 8, positioning and pressing mechanism 9, sliding block two 91, supporting seat 92, clamping arm 93, supporting sliding seat 94, toothed groove 941, guide seat 95, pressing assembly 96, base 961, transmission connecting rod 962, pressing connecting rod 963, connecting block 964, operating rod 965, hinged seat two 966, threaded knob one 967, pressing disc 968, hinged joint 969, locking assembly 97, pushing rod 971, spring 972, movable cavity 973, anti-dropping block 974, clamping block 975, transverse sliding slot 10, fixed positioning assembly 11, L-shaped plate 111, threaded knob two 112, pressing strip 113, wire sliding rod 114, handle two 12, adjusting rotating shaft 121, worm 122, threaded rod 13, connecting rotating shaft 131, worm wheel 132, traction seat plate 14. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0020] Embodiment 1 Reference Figure 1 , 2 The first embodiment of the present application provides a car traction seat frame assembly welding positioning device, which comprises a workbench 1, supporting legs 2 are fixedly installed at the bottom corners of the workbench 1, a fixed positioning assembly 11 is fixedly installed at the top surface of one side end of the workbench 1, a vertical sliding slot 3 is concavely arranged in the middle of the top surface of the other side of the workbench 1, a screw rod 7 is rotatably installed in the vertical sliding slot 3, a handle one 8 is fixedly connected to one end of the screw rod 7 which protrudes out of the rear end of the workbench 1, a sliding block one 4 is connected to the screw rod 7 through a threaded structure, the sliding block one 4 is slidably arranged in the vertical sliding slot 3, the top end of the sliding block one 4 is fixedly connected to the bottom end of a positioning block 5, and the top end of the positioning block 5 is fixedly connected to a support positioning mechanism 6. The top surface of the workbench 1 has concave transverse grooves 10 on both sides near the fixed positioning component 11. Threaded rods 13 are rotatably installed in the transverse grooves 10. The threaded rods 13 are connected to positioning and clamping mechanisms 9 through threaded structures. The positioning and clamping mechanisms 9 are slidably installed in the transverse grooves 10. One end of an adjusting shaft 121 is connected to the threaded rods 13. The adjusting shaft 121 is rotatably installed on the workbench 1, and the other end of the adjusting shaft 121 is fixedly connected to a crank handle 12.

[0021] A positioning method for a welding positioning device for an automotive traction seat frame is also provided, comprising the following steps: S1. The traction seat plate 14 is placed flat on the top surface of the workbench 1; S2. Manually turn the crank handle 12. The crank handle 12 drives the adjusting shaft 121 to rotate. The adjusting shaft 121 drives the two threaded rods 13 to rotate synchronously. The threaded rods 13 then drive the positioning and pressing mechanism 9 to move in the transverse slide groove 10. The two positioning and pressing mechanisms 9 move closer to each other and then abut against the two ends of the traction seat plate 14 respectively, stopping the crank handle 12 from being turned. S3. Then manually turn the crank handle 8. The crank handle 8 drives the lead screw 7 to rotate. The lead screw 7 drives the slider 4 to move in the vertical slide groove 3. The slider 4 then drives the fixed positioning block 5 to be inserted into the traction pin hole of the traction seat plate 14. At the same time, the continuous movement of the slider 4 pushes the traction seat plate 14 toward the fixed positioning component 11. S4. After the traction seat plate 14 abuts against the fixed positioning component 11, the positioning block 5 cooperates with the fixed positioning component 11 to clamp both ends of the traction seat plate 14. Then, by manually operating the fixed positioning component 11, one end of the traction seat plate 14 is pressed and fixed. S5. Then manually turn the crank handle 12. By adjusting the rotating shaft 121, drive the two threaded rods 13 to rotate synchronously, thereby driving the positioning and clamping mechanism 9 to clamp and limit the other two ends of the traction seat plate 14. Finally, the positioning and clamping mechanism 9, together with the worktable 1, clamps and fixes the other two ends of the traction seat plate 14. At this time, all four sides of the traction seat plate 14 are clamped and fixed, and three sides of the traction seat plate 14 are clamped and fixed. S6. Position the support by manually operating the support positioning mechanism 6, and then operate the support positioning mechanism 6 to make the support fit tightly against the traction seat plate 14, so as to achieve coaxial positioning and fixation of the two supports.

[0022] Example 2 Reference Figures 1-8This is the second embodiment of the present invention, which is based on the previous embodiment. Specifically, the workbench 1 is hollow and has a transmission cavity 101. The opposite ends of the threaded rods 13 are respectively fixedly connected to the two ends of the connecting shaft 131. The connecting shaft 131 is rotatably installed in the workbench 1. A worm gear 132 is fixedly sleeved in the middle of the connecting shaft 131. The worm gear 132 is rotatably located in the transmission cavity 101. The worm gear 132 meshes with the worm 122. The worm 122 is fixedly connected to the end of the adjusting shaft 121 away from the crank handle 12. The crank handle 12 drives the worm 122 to rotate through the adjusting shaft 121. The worm 122 drives the connecting shaft 131 to rotate through the meshing transmission with the worm gear 132. The connecting shaft 131 then drives the threaded rods 13 at both ends to rotate synchronously, so as to realize the synchronous movement of the two positioning and pressing mechanisms 9 towards or away from each other in the transverse slide groove 10.

[0023] Specifically, the fixed positioning component 11 includes an L-shaped plate 111, a threaded knob 112, a pressure bar 113, and a guide rail 114. There are three L-shaped plates 111, and one end of each L-shaped plate 111 is fixedly connected to one end of the top surface of the workbench 1. The other end of the L-shaped plate 111 in the middle is connected to the threaded knob 112 through a threaded structure. The other ends of the L-shaped plates 111 on both sides are slidably sleeved with the guide rail 114. One end of the guide rail 114 is fixedly connected to both sides of one end face of the pressure bar 113. The end of the threaded knob 112 is rotatably connected to the middle of one end face of the pressure bar 113. By rotating the threaded knob 112, the pressure bar 113 can be driven to rise and fall along the guide rail 114, thereby pressing or releasing one end of the traction seat plate 14.

[0024] Specifically, the positioning and clamping mechanism 9 includes a second slider 91, a support seat 92, a clamping arm 93, a support slide 94, a guide seat 95, a clamping assembly 96, and a locking assembly 97. The second slider 91 is slidably disposed in the transverse slide groove 10 and is connected to the threaded rod 13 by a threaded structure. The top of the second slider 91 is fixedly connected to the support seat 92. The opposite end of the support seat 92 is hinged to the clamping arm 93. The opposite end of the clamping arm 93 is used to abut against the side of the traction seat plate 14. The other end of the support seat 92 is fixedly connected to the support slide 94. The guide seat 95 is slidably sleeved in the support slide 94. The clamping assembly 96 is installed on the top of one side of the guide seat 95. The locking assembly 97 is movably disposed on the other side of the guide seat 95. The clamping arm 93 has a Y-shaped structure. The bottom inner wall of the support slide 94 is recessed with a toothed groove 941. The toothed groove 941 is evenly distributed along the length of the support slide 94.

[0025] Furthermore, the clamping assembly 96 includes a base 961, a transmission connecting rod 962, a clamping connecting rod 963, a connecting block 964, an operating lever 965, a second hinge seat 966, a first threaded knob 967, a pressure plate 968, and a hinge interface 969. The base 961 is fixedly connected to the top end of the guide seat 95. One end of the transmission connecting rod 962 is hinged to the base 961, and the other end of the transmission connecting rod 962 is hinged to one end of the clamping connecting rod 963. The other end of the clamping connecting rod 963 is connected via... The threaded structure is fitted with a threaded knob 967. The bottom end of the threaded knob 967 is rotatably connected to a pressure plate 968. A hinge interface 969 is provided at the corner of the clamping connecting rod 963. A hinge seat 966 is hinged inside the hinge interface 969. The hinge seat 966 is fixedly connected to the top end of the support base 92. One end of the connecting block 964 is fixedly connected to the end of the transmission connecting rod 962 away from the base 961. The other end of the connecting block 964 is fixedly connected to an operating rod 965.

[0026] When the clamping assembly 96 is in operation, pressing down on the operating lever 965 causes the connecting block 964 and the transmission link 962 to rotate. The transmission link 962 pushes the clamping link 963 to rotate around the hinge seat 966, causing the pressure plate 968 at the end of the clamping link 963 to move downward and press against the surface of the traction seat plate 14. Then, rotating the threaded knob 967 can further adjust the clamping force of the pressure plate 968 on the traction seat plate 14, ensuring that the traction seat plate 14 will not have vertical displacement during the welding process.

[0027] Furthermore, the locking assembly 97 includes a toggle lever 971, a spring 972, a movable cavity 973, an anti-disengagement block 974, and a locking block 975. The movable cavity 973 is located on the side of the guide seat 95 away from the pressing assembly 96. The anti-disengagement block 974 is slidably sleeved inside the movable cavity 973. The bottom end of the anti-disengagement block 974 is fixedly connected to the locking block 975. After the locking block 975 slides out of the movable cavity 973, it slides and engages with the toothed groove 941. The top end of the anti-disengagement block 974 is fixedly connected to one end of the toggle lever 971. The other end of the toggle lever 971 slides out of the top of the guide seat 95. The spring 972 is movably sleeved outside the toggle lever 971. The bottom end of the spring 972 is fixedly connected to the top end of the anti-disengagement block 974. The other end of the spring 972 is fixedly connected to the top inner wall of the movable cavity 973.

[0028] The locking block 975 in the locking assembly 97 is engaged in the tooth groove 941 under the elastic action of the spring 972, thereby restricting the sliding of the guide seat 95 in the support slide 94. When it is necessary to adjust the position of the guide seat 95, that is, change the lifting position of the pressing link 963 and push the lever 971 upward. The lever 971 drives the anti-disengagement block 974 to compress the spring 972 and disengage the locking block 975 from the tooth groove 941. At this time, the guide seat 95 can be pushed to slide along the support slide 94 to the appropriate position. After releasing the lever 971, the locking block 975 is re-engaged in the corresponding tooth groove 941 under the reset action of the spring 972, thereby locking the position of the guide seat 95.

[0029] Specifically, the support positioning mechanism 6 includes a support frame 61, an adjusting screw 62, an adjusting knob 63, a movable block 64, and a centering component 65. The bottom end of the support frame 61 is fixedly connected to the positioning block 5. The adjusting screw 62 is rotatably installed inside the support frame 61. The top end of the adjusting screw 62 is fixedly connected to the adjusting knob 63. The adjusting knob 63 is rotatably connected to the top end of the support frame 61. The adjusting screw 62 is threaded onto the movable block 64. The two ends of the movable block 64 are respectively fixedly connected to the centering component 65. The centering components 65 are arranged symmetrically on the same axis.

[0030] Furthermore, the centering component 65 includes a support screw 651, a central rod 652, a driven member 653, a clamping plate 654, an internal threaded ring 655, a support ring 656, and a driving member 657. One end of the support screw 651 is fixedly connected to the two ends of the movable block 64, and the other end of the support screw 651 is fixedly connected to the central rod 652 coaxially. The outer wall of the central rod 652 is provided with multiple driven members 653. The ends of the multiple driven members 653 away from the central rod 652 are fixedly connected to one side of the clamping plate 654, and the other side of the clamping plate 654 is fixedly connected to one end of the driving member 657. The other end of the driving member 657 is fixedly connected to the outer wall of the support ring 656. The internal threaded ring 655 is rotatably sleeved inside the support ring 656, and the internal threaded ring 655 is sleeved on the support screw 651 through a threaded structure.

[0031] When in use, the centering component 65 in the support positioning mechanism 6 places the support on the outside of the center rod 652, and then rotates the internal threaded ring 655. The internal threaded ring 655 drives the support ring 656 to move along the support rod 651 through the threaded engagement with the support screw 651. The support ring 656 drives multiple abutment plates 654 to expand outward through the active component 657 and the driven component 653. The multiple abutment plates 654 abut against the inner wall of the support, realizing the self-centering clamping of the support, ensuring that the axis of the support coincides with the axis of the center rod 652, thereby ensuring the coaxial setting of the two supports.

[0032] Furthermore, the driving component 657 includes a first hinge seat 6571, a driving link 6572, and a second movable seat 6573. The first hinge seat 6571 is fixedly connected to the outer wall of the support ring 656. The first hinge seat 6571 is hinged to one end of the driving link 6572, and the other end of the driving link 6572 is hinged to the second movable seat 6573. The second movable seat 6573 is fixedly connected to the inner side wall of the abutment plate 654. Two driven components 653 are arranged in parallel on the same plane. The driven component 653 includes a fixed seat 6531 and a driven link. 6532, movable seat 6533, and fixed seat 6531 are respectively fixedly connected to the outer wall of the center rod 652. Fixed seat 6531 is respectively hinged to one end of driven link 6532. The other end of driven link 6532 is respectively hinged to movable seat 6533. Movable seat 6533 is fixedly connected to the inner side wall of the abutment plate 654. At least three driven links 6532 are evenly distributed around the circumference of the abutment plate 654. Driven links 6532 located on the same plane are arranged parallel to each other. Adjacent active links 6572 and driven links 6532 are symmetrically arranged.

[0033] The working principle and process are as follows: Traction seat plate 14 Figure 8 The plate is placed flat on the top surface of the workbench 1. Manually turning the crank handle 12 drives the adjusting shaft 121 to rotate. The adjusting shaft 121, through the meshing of the worm gear 122 and worm wheel 132, drives the threaded rods 13 connecting the shaft 131 and both ends to rotate synchronously. The threaded rods 13 drive the slider 91 to slide along the transverse groove 10, thereby causing the support seat 92 and clamping arms 93 to move closer together until the clamping arms 93 abut against the two sides of the traction seat plate 14, achieving initial transverse limiting and initial centering of the traction seat plate 14. Then, turning the crank handle 8 causes the lead screw 7 to drive the slider 4 to move along the vertical groove 3, causing the positioning block 5 to insert into the traction pin hole of the traction seat plate 14 and push the traction seat plate 14 towards the fixed positioning assembly 11 until the traction seat plate 14... Plate 14 abuts against L-shaped plate 111 of fixed positioning assembly 11. At this time, rotate threaded knob 112 to push pressure bar 113 down along guide rail 114, and cooperate with worktable 1 to initially press one end of traction seat plate 14. Rotate handle 12 again to drive positioning and pressing mechanism 9 through threaded rod 13 to further clamp the two outer walls of traction seat plate 14, that is, clamping arm 93 clamps and positions the two outer walls of traction seat plate 14. Then operate the operating rod 965 of pressing assembly 96 to drive guide seat 95 to move towards traction seat plate 14, and then drive pressing connecting rod 963 to swing around hinge seat 966 as the center. Pressing connecting rod 963 drives pressure plate 968 to press down. Cooperate with threaded knob 967 to fine adjust the pressing force, and complete the clamping of four sides and pressing and fixing of three sides of traction seat plate 14. For support positioning, the support is fitted onto the outside of the clamping plate 654 of the centering assembly 65. The internal threaded ring 655 is rotated to move along the support screw 651, which drives the support ring 656 and the hinge seat 6571 of the driving member 657 to move. The driving connecting rod 6572 pushes the movable seat 6573 and the clamping plate 654 to move radially along the driven connecting rod 6532 of the driven member 653, thereby achieving self-centering clamping of the support and ensuring that the two supports are on the through axis, thus guaranteeing the concentricity of the two supports. Then, the adjustment knob 63 is manually rotated to drive the adjustment screw 62 to rotate, which causes the movable block 64 to drive the centering assembly 65 and the clamped support to rise and fall, ensuring that the support and the traction seat plate 14 fit tightly, providing accurate positioning for subsequent welding operations.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of automobile towing seat frame assembly welding positioning device, including workbench (1), the bottom end four corners of the workbench (1) are fixedly installed with support leg (2), it is characterized by: The top surface side end of the workbench (1) is fixedly installed with a fixed positioning assembly (11), the top surface other side middle of the workbench (1) is recessed with a vertical sliding groove (3), the vertical sliding groove (3) is rotatably installed with a lead screw (7), one end of the lead screw (7) rotatably extends out of the workbench (1) rear end and is fixedly connected with a crank handle I (8), the lead screw (7) is connected with a sliding block I (4) through a threaded structure, the sliding block I (4) is slidably arranged in the vertical sliding groove (3) and the top end of the sliding block I (4) is fixedly connected with the bottom end of a positioning block (5), the top end of the positioning block (5) is fixedly connected with a support positioning mechanism (6). The two sides of the workbench (1) top surface close to the fixed positioning assembly (11) are respectively recessed with a horizontal sliding groove (10), the horizontal sliding groove (10) is respectively rotatably installed with a threaded rod (13), the threaded rod (13) is respectively connected with a positioning and pressing mechanism (9) through a threaded structure, the positioning and pressing mechanism (9) is slidably arranged in the horizontal sliding groove (10), one end of an adjusting rotating shaft (121) is drivingly connected between the threaded rods (13), the adjusting rotating shaft (121) is rotatably installed on the workbench (1) and the other end of the adjusting rotating shaft (121) is fixedly connected with a crank handle II (12).

2. The positioning device for assembling and welding the frame of a car towing seat according to claim 1, characterized in that: The workbench (1) is hollowly provided with a transmission cavity (101), the opposite ends of the threaded rods (13) are respectively fixedly connected with the two ends of a connecting rotating shaft (131), the connecting rotating shaft (131) is rotatably installed in the workbench (1), the middle of the connecting rotating shaft (131) is fixedly sleeved with a worm wheel (132), the worm wheel (132) is rotatably arranged in the transmission cavity (101), the worm wheel (132) is meshingly connected with a worm (122), the worm (122) is fixedly connected with one end of the adjusting rotating shaft (121) away from the crank handle II (12).

3. The device according to claim 1, characterized in that: The fixed positioning assembly (11) comprises L-shaped plates (111), a threaded knob II (112), pressing strips (113) and wire sliding rods (114), the L-shaped plates (111) are provided with three and one end of the three L-shaped plates (111) is fixedly connected with one end of the workbench (1) top surface, the other end of the L-shaped plate (111) in the middle is connected with the threaded knob II (112) through a threaded structure, the other ends of the L-shaped plates (111) on the two sides are respectively slidably sleeved with the wire sliding rods (114), one end of the wire sliding rod (114) is respectively fixedly connected with one end surface of the pressing strip (113), one end surface of the pressing strip (113) is rotatably connected with the end of the threaded knob II (112).

4. The device according to claim 1, characterized in that: The positioning and pressing mechanism (9) comprises sliding blocks two (91), support seats (92), clamping arms (93), support sliding seats (94), guide seats (95), pressing assemblies (96), locking assemblies (97), the sliding blocks two (91) are slid in transverse sliding grooves (10) respectively and are connected with threaded rods (13) through threaded structures respectively, the top ends of the sliding blocks two (91) are fixedly connected with the support seats (92) respectively, the opposite ends of the support seats (92) are hingedly connected with the clamping arms (93) respectively, the other ends of the support seats (92) are fixedly connected with the support sliding seats (94) respectively, the support sliding seats (94) are slidably sleeved with the guide seats (95), one side top end of the guide seat (95) is provided with the pressing assembly (96), the other side of the guide seat (95) is movably provided with the locking assembly (97), the clamping arm (93) is a Y-shaped structure, a gear groove (941) is concavely arranged in the bottom inner wall of the support sliding seat (94), and the gear grooves (941) are evenly arranged along the length direction of the support sliding seat (94).

5. The assembly positioning device for a vehicle seat frame according to claim 4, wherein: The pressing assembly (96) comprises a base (961), a transmission connecting rod (962), a pressing connecting rod (963), a connecting block (964), an operating rod (965), a hinged seat two (966), a threaded knob one (967), a pressing disc (968), a hinged port (969), the base (961) is fixedly connected with the top end of the guide seat (95), one end of the base (961) is hingedly connected with the transmission connecting rod (962), the other end of the transmission connecting rod (962) is hingedly connected with one end of the pressing connecting rod (963), the other end of the pressing connecting rod (963) is sleeved with the threaded knob one (967) through a threaded structure, the bottom end of the threaded knob one (967) is rotatably connected with the pressing disc (968), a hinged port (969) is arranged at the corner of the pressing connecting rod (963), the hinged port (969) is hingedly connected with the hinged seat two (966), the hinged seat two (966) is fixedly connected with the top end of the support seat (92), one end of the connecting block (964) is fixedly connected with the operating rod (965) on the side, away from the base (961), of the transmission connecting rod (962), and the other end of the connecting block (964) is fixedly connected with the operating rod (965).

6. The frame assembly positioning device of claim 5, wherein: The locking assembly (97) comprises a toggle lever (971), a spring (972), a movable cavity (973), an anti-dropping block (974), a clamping block (975), the movable cavity (973) is arranged on the side of the guide seat (95) away from the pressing assembly (96), the anti-dropping block (974) is sleeved on the movable cavity (973), the bottom end of the anti-dropping block (974) is fixedly connected with the clamping block (975), the clamping block (975) is slidably connected with the tooth groove (941) after being slid out of the movable cavity (973), one side end of the toggle lever (971) is fixedly connected with the top end of the anti-dropping block (974), the other side of the toggle lever (971) is slidably connected with the top of the guide seat (95), the spring (972) is sleeved on the toggle lever (971), the bottom end of the spring (972) is fixedly connected with the top end of the anti-dropping block (974), and the other end of the spring (972) is fixedly connected with the top inner wall of the movable cavity (973).

7. The device according to claim 1, wherein: The support positioning mechanism (6) comprises a supporting frame (61), an adjusting screw rod (62), an adjusting knob (63), a movable block (64) and a centering assembly (65), the bottom end of the supporting frame (61) is fixedly connected with the positioning block (5), the adjusting screw rod (62) is rotatably arranged in the supporting frame (61), the top end of the adjusting screw rod (62) is fixedly connected with the adjusting knob (63), the adjusting knob (63) is rotatably connected with the top end of the supporting frame (61), the adjusting screw rod (62) is threadedly sleeved with the movable block (64), and the two ends of the movable block (64) are respectively fixedly connected with the centering assembly (65).

8. The frame assembly positioning device of claim 7, wherein: The centering assembly (65) comprises a supporting screw rod (651), a center rod (652), a driven part (653), an abutting plate (654), an internally-threaded ring (655), a supporting ring (656) and a driving part (657), the opposite ends of the supporting screw rod (651) are respectively fixedly connected with the two ends of the movable block (64), the other ends of the supporting screw rod (651) are respectively fixedly connected with the center rod (652) in an axisymmetric manner, the outer wall of the center rod (652) is provided with a plurality of driven parts (653), one side of each of the driven parts (653) away from the center rod (652) is fixedly connected with the abutting plate (654), the other side of each of the abutting plates (654) is fixedly connected with one end of the driving part (657), the other end of each of the driving parts (657) is fixedly connected with the outer wall of the supporting ring (656), the internally-threaded ring (655) is rotatably sleeved in the supporting ring (656), and the internally-threaded ring (655) is threadedly sleeved with the supporting screw rod (651).

9. The assembly positioning device of claim 8, wherein: The driving part (657) comprises a hinged seat one (6571), a driving link (6572) and a movable seat two (6573), the hinged seat one (6571) is fixedly connected to the outer wall of the supporting ring (656), one end of the hinged seat one (6571) is hinged to the driving link (6572), the other end of the driving link (6572) is hinged to the movable seat two (6573), the movable seat two (6573) is fixedly connected to the inner side wall of the abutting plate (654), two driving parts (653) are arranged in parallel on the same plane, the driving part (653) comprises a fixed seat (6531), a driven link (6532) and a movable seat one (6533), the fixed seat (6531) is fixedly connected to the outer wall of the central rod (652), one end of the fixed seat (6531) is hinged to the driven link (6532), the other end of the driven link (6532) is hinged to the movable seat one (6533), the movable seat one (6533) is fixedly connected to the inner side wall of the abutting plate (654), at least three abutting plates (654) are arranged in a circle, the driven links (6532) arranged on the same plane are arranged in parallel, and the adjacent driving links (6572) and driven links (6532) are arranged in a symmetrical manner.

10. The positioning method of the automobile towing seat frame assembly welding positioning device according to any one of claims 1-9, characterized in that, The method comprises the following steps: S1, the traction seat plate (14) is placed on the top surface of the workbench (1); S2, manually rotate the second handle (12), the second handle (12) drives the adjusting shaft (121) to rotate, the adjusting shaft (121) drives the two threaded rods (13) to rotate synchronously, the threaded rods (13) further drive the positioning and pressing mechanism (9) to move in the horizontal sliding groove (10), the two positioning and pressing mechanisms (9) are close to each other, and then the two ends of the traction seat plate (14) are pressed, and the second handle (12) is stopped rotating; S3, then manually rotate the first handle (8), the first handle (8) drives the screw rod (7) to rotate, the screw rod (7) drives the sliding block one (4) to move in the vertical sliding groove (3), the sliding block one (4) further drives the fixed positioning block (5) to be clamped into the traction pin hole of the traction seat plate (14), and under the continuous movement of the sliding block one (4), the traction seat plate (14) is pushed to move towards the fixed positioning assembly (11); S4, after the traction seat plate (14) abuts against the fixed positioning assembly (11), the positioning block (5) cooperates with the fixed positioning assembly (11) to clamp the two ends of the traction seat plate (14), and then the fixed positioning assembly (11) is manually operated to press and fix one end of the traction seat plate (14); S5, then manually rotate the second handle (12), drive the two threaded rods (13) to rotate synchronously through the adjusting shaft (121), and then drive the positioning and pressing mechanism (9) to clamp and limit the other two ends of the traction seat plate (14), and finally the other two ends of the traction seat plate (14) are press-fixed through the cooperation of the positioning and pressing mechanism (9) and the workbench (1), at this time, the four sides of the traction seat plate (14) are clamped and fixed, and the three sides of the traction seat plate (14) are press-fixed; S6, through the manual operation support positioning mechanism (6) to position the support, and then operate the support positioning mechanism (6) to make the support close to the traction seat plate (14), realize the coaxial positioning and fixing of the two supports. ​

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