Double-bin multi-station nut welding machine

Abstract

The present application relates to the technical field of welding, and discloses a double-bin multi-station nut welding machine, which comprises a workbench, a rotary shell and a station switching assembly arranged in the rotary shell, the rotary shell is provided with a welding mechanism on the front side and a direction reversing mechanism on the bottom. The station switching assembly drives the circular pipe to circulate through the feeding, welding, turning and discharging stations through the cylindrical station block with a multi-station groove, drives the pull shaft through the hollow rotary hydraulic oil cylinder, cooperates with the telescopic rod, the rotary guide sleeve and the transmission assembly, controls the clamping jaw to clamp, move downward, rotate 180 degrees and accurately return to the original position after the welding of one end of the circular pipe is completed, so that the automatic continuous welding of the nuts at both ends of the circular pipe is realized. The present application realizes the one-time clamping and two-end welding of the circular pipe on a single device, greatly improves the production efficiency and the degree of automation, and ensures the consistency and precision of the product welding quality.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of welding, and particularly relates to a double-warehouse multi-station nut welding machine. BACKGROUND

[0002] In the field of industrial manufacturing, such as automobile oil pipes, furniture pipe fittings and other products, it is often necessary to weld nuts on both ends of metal round pipes in order to connect with other components. This process requires that the nuts and the end of the round pipe have strong welding strength and precise concentricity to ensure the smoothness of subsequent assembly and the reliability of the connection.

[0003] At present, for the operation of welding nuts on both ends of the round pipe, the common prior art device is a single-station or simple multi-station special welding machine. This type of device can usually only complete the welding of one nut on one end of the round pipe at a time. When the nut on the other end needs to be welded, the round pipe with the welded nut on one end must be removed from the device, and then the round pipe is turned over by manual or auxiliary equipment, and then the round pipe is reloaded, positioned, and the nut on the second end is welded.

[0004] This production method of welding nuts on both ends of the round pipe twice requires twice loading and unloading, which has obvious efficiency bottleneck. It not only increases the operation steps and time, reduces the production efficiency, but also has the risk of damaging the workpiece during the second loading and unloading and turning over, which may cause the deviation of the welding position of the nuts on both ends, affecting the product quality. At the same time, repeated manual intervention also increases the labor intensity and production cost. Therefore, there is an urgent need for a high-efficiency device that can realize automatic and continuous production and complete the welding of nuts on both ends of the round pipe at one time. SUMMARY

[0005] The purpose of the embodiment of the present application is to provide a double-warehouse multi-station nut welding machine, which aims to solve the above problems.

[0006] The application is achieved in the following way, a double-bin multi-station nut welding machine, comprising a workbench, characterized in that it further comprises: a rotary shell fixed on the top of the workbench, a station switching assembly is arranged in the rotary shell, the station switching assembly is used to drive multiple circular tubes to switch stations with the rotary shell axis as the center; a welding mechanism is installed on the front side of the rotary shell, the welding mechanism is used to weld the circular tubes with nuts; a bottom gap is arranged at the bottom of the rotary shell, a direction reversing mechanism is arranged below the bottom gap, the direction reversing mechanism comprises a support block arranged at the bottom gap, a telescopic rod is fixedly arranged at the bottom of the support block, a rotating guide sleeve is slidably connected to the telescopic rod along the length direction of the telescopic rod, the rotating guide sleeve is rotationally connected to the rotary shell, a rotating assembly is connected to the bottom of the workbench, the rotating assembly is used to drive the rotating guide sleeve to rotate, a compression spring one is fixedly arranged on the side wall of the rotating guide sleeve, the end of the compression spring one is fixedly arranged on the telescopic rod; a hollow rotary hydraulic oil cylinder is fixedly arranged on the bottom of the workbench through a support, a pull shaft is connected to the telescopic end of the hollow rotary hydraulic oil cylinder, two clamping jaws are rotationally connected to the middle part of the support block, the pull shaft penetrates through the telescopic rod and is connected to the two clamping jaws through a transmission assembly, when the pull shaft moves downward, the transmission assembly drives the two clamping jaws to clamp the circular tube.

[0007] Further technical solutions, the station switching assembly comprises a cylindrical station block rotationally connected in the rotary shell, one end of the rotary shell is fixedly provided with a motor one, the rotating end of the motor one is connected to the cylindrical station block, a plurality of station grooves are uniformly arranged on the side wall of the cylindrical station block.

[0008] Further technical solutions, the rotary shell is communicated with a circular tube bin at the top.

[0009] Further technical solutions, the transmission assembly comprises an installation block slidably connected to the top of the telescopic rod along the length direction of the telescopic rod, the installation block is fixedly connected to the top of the pull shaft, two guide sliding shafts are fixedly arranged on the installation block, strip-shaped recesses are arranged on the inner walls of the two clamping jaws, and the two guide sliding shafts are respectively slidably connected in the two strip-shaped recesses.

[0010] Further technical solutions, a ratchet rack is fixedly embedded on the side wall of the pull shaft, a guide groove is arranged on the telescopic rod, an engagement block is slidably connected in the guide groove, the engagement block slides radially on the telescopic rod, one end of the engagement block is matched with the ratchet rack, the other end of the engagement block protrudes out of the telescopic rod and is provided with an inclined pushing groove, an inclined pushing block matched with the inclined pushing groove is arranged at the bottom of the rotating guide sleeve, and a compression spring two is arranged in the guide groove.

[0011] Further technical solutions, the rotating assembly comprises a motor two fixedly arranged on the bottom of the workbench through a support, a gear one is fixedly arranged at the rotating end of the motor two, a gear two is fixedly arranged on the side wall of the rotating guide sleeve, and the gear two is engaged with the gear one.

[0012] Further technical solutions, the welding mechanism includes a fixed component provided on the front side of the rotary shell, the fixed component positions the circular pipe through the work station slot, the rotary shell is fixedly provided with an electrode block two at one end close to the motor, the rotary shell is fixedly provided with a nut magazine and an L-shaped mounting plate at the other end, the L-shaped mounting plate is fixedly provided with an extension piece one, the extension piece one is connected with an electrode block one at the extension end, and the nut magazine is provided with a feeding hole at the lower part and the other end of the rotary shell.

[0013] Further technical solutions, the fixed component includes a fixed block and a concave mounting plate fixedly provided on the front side of the rotary shell, the fixed block is fixedly provided with two guide shafts, the two guide shafts are slidingly connected to the concave mounting plate, the concave mounting plate is fixedly provided with an extension piece two, the extension piece two is connected to the fixed block at the extension end, and the rotary shell is provided with an avoiding opening for avoiding the fixed block.

[0014] Further technical solutions, the rotary shell is provided with a material returning assembly, the material returning assembly includes a material returning plate and an extension piece three rotatingly connected to the rotary shell, and the extension piece three is rotatingly connected to the material returning plate at the extension end.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] 1. Significantly improve production efficiency: The multi-station rotary design realizes the parallel operation of multiple processes such as feeding, one-end welding, pipe turning, other-end welding, and discharging, and avoids manual intervention in the middle link through the built-in automatic direction turning mechanism, realizing "one clamping, two-end welding" of the circular pipe two-end nut by a single device, with fast production rhythm and efficiency far exceeding traditional single-station or manual turning devices;

[0017] 2. Ensure welding quality and precision: The direction turning mechanism turns the circular pipe by 180° through the clamping jaw clamping the middle part, avoiding damage caused by directly clamping the welded end; and the whole turning process is completed inside the device, with unified positioning reference, effectively ensuring the coaxiality and position precision of the circular pipe two-end nut welding, and stable and reliable product quality;

[0018] 3. High automation degree and reliable operation: The device integrates automatic feeding, positioning, welding, turning, and discharging, and automatically operates in the whole process. The interlocking mechanism of the ratchet bar and the meshing block in the direction turning mechanism can effectively prevent the clamping force of the clamping jaw from decreasing due to vibration during turning, ensuring the stability of the circular pipe clamping and the reliability of the action;

[0019] 4. Compact structure and reasonable layout: The function modules such as work station switching, welding, and direction turning are integrated in the rotary shell and its periphery, with high space utilization rate, compact device structure, and small floor area. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0021] Figure 2 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 1 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0022] Figure 3 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 1 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0023] Figure 4 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 2 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0024] Figure 5 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 1 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0025] Figure 6 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 5 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0026] Figure 7 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 6 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0027] Figure 8 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 6 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0028] Figure 9 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided. Figure 1 A structure schematic view of a double-bin multi-station nut welding machine provided by the present application is provided.

[0029] In the drawings: 101, rotary housing; 102, rotary guide sleeve; 103, telescopic rod; 104, compression spring one; 105, bottom notch; 107, support block; 108, clamping jaw; 109, pull shaft; 110, hollow rotary hydraulic cylinder; 111, workbench;

[0030] 2, station switching assembly; 201, cylindrical station block; 202, station groove; 203, motor one; 204, circular tube bin;

[0031] 3, transmission assembly; 301, mounting block; 302, guide sliding shaft; 303, strip-shaped sink; 401, ratchet bar; 402, guide groove; 403, meshing block; 404, compression spring two; 405, inclined pushing groove; 406, inclined pushing block;

[0032] 5, rotating assembly; 501, motor two; 502, gear one; 503, gear two;

[0033] 6, welding mechanism; 601, nut stock bin; 602, L-shaped mounting plate; 603, electrode block one; 604, telescopic part one; 605, electrode block two;

[0034] 7, fixing assembly; 701, concave mounting plate; 702, fixing block; 703, guide shaft; 704, telescopic part two;

[0035] 8, material returning assembly; 801, material returning plate; 802, telescopic part three. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in details below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0037] The specific implementation of the present application will be described in details below with reference to specific embodiments.

[0038] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a double-bin multi-station nut welding machine provided by one embodiment of the application, comprising a workbench 111, characterized in that further comprising: a rotary shell 101 fixed on the top of the workbench 111, wherein the rotary shell 101 is provided with a station switching assembly 2, and the station switching assembly 2 is used to drive multiple circular tubes to switch stations with the rotary shell 101 as the center; the rotary shell 101 is provided with a welding mechanism 6 on the front side, and the welding mechanism 6 is used to weld the circular tube and the nut; the rotary shell 101 is provided with a bottom gap 105 at the bottom, and a direction reversing mechanism is arranged below the bottom gap 105, wherein the direction reversing mechanism comprises a support block 107 arranged at the bottom gap 105, a telescopic rod 103 fixed at the bottom of the support block 107, a rotating guide sleeve 102 slidably connected to the telescopic rod 103 along the length direction, and the rotating guide sleeve 102 is rotationally connected to the rotary shell 101; the workbench 111 is connected with a rotating assembly 5 at the bottom, and the rotating assembly 5 is used to drive the rotating guide sleeve 102 to rotate; a compression spring 104 is fixed on the side wall of the rotating guide sleeve 102, and the end of the compression spring 104 is fixed on the telescopic rod 103; the workbench 111 is fixed with a hollow rotary hydraulic cylinder 110 through a support, and the telescopic end of the hollow rotary hydraulic cylinder 110 is connected with a pull shaft 109; the support block 107 is rotationally connected with two clamping jaws 108 at the middle part, and the pull shaft 109 penetrates through the telescopic rod 103 and is connected with the two clamping jaws 108 through a transmission assembly 3; when the pull shaft 109 moves downward, the transmission assembly 3 drives the two clamping jaws 108 to clamp the circular tube.

[0039] In the embodiment of the application, in the initial state, the compression spring 104 pushes the telescopic rod 103 upward, and the telescopic rod 103 drives the support block 107 to block the bottom gap 105 at the bottom of the rotary shell 101, and the two clamping jaws 108 are in the open state.

[0040] When in use, the work station switching assembly 2 drives the plurality of circular tubes to rotate around the axis of the rotary shell 101 to switch work stations. When welding the circular tube and the nut, the work station switching assembly 2 drives the circular tube to move to the welding work station, the welding mechanism 6 welds the circular tube and the nut, and then the work station switching assembly 2 continues to drive the circular tube to move until the circular tube moves to the bottom gap 105, i.e. above the supporting block 107. Then, the hollow rotary hydraulic cylinder 110 drives the pull shaft 109 to move downward, and under the supporting action of the compression spring one 104, the telescopic rod 103 does not move first, the pull shaft 109 drives the two clamping jaws 108 to clamp the circular tube through the transmission assembly 3, and the circular tube is fixed on the supporting block 107. When the clamping jaws 108 cannot continue to rotate, the pull shaft 109 continues to move downward, and the pull shaft 109 pulls the telescopic rod 103 downward through the mounting block 301, the clamping jaws 108 and the circular tube. The telescopic rod 103 moves downward by overcoming the elastic force of the compression spring one 104, and the compression spring one 104 is gradually compressed. After the supporting block 107 drives the circular tube to move below the rotary shell 101, the rotating assembly 5 drives the rotating guide sleeve 102 to rotate, and the rotating guide sleeve 102 rotates 180° to complete the switching of the two ends of the circular tube. When the switching of the two ends of the circular tube is completed, the pull shaft 109 moves upward, the pull shaft 109 drives the telescopic rod 103 to move upward, and the telescopic rod 103 drives the supporting block 107 to move upward until the supporting block 107 drives the circular tube to enter the work station groove 202 from the bottom gap 105. After the supporting block 107 contacts the bottom of the rotary shell 101, the supporting block 107 and the telescopic rod 103 cannot continue to move upward, the pull shaft 109 drives the two clamping jaws 108 to loosen the circular tube and separate from the inside of the rotary shell 101 through the transmission assembly 3, the switching of the two ends of the circular tube is completed, and the circular tube is convenient for welding the nut at the two ends. After the nuts are welded at the two ends of the circular tube, the work station switching assembly 2 drives the circular tube to move to the material returning work station to return the material.

[0041] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 5 , as a preferred embodiment of the present application, the work station switching assembly 2 comprises a cylindrical work station block 201 rotatably connected in the rotary shell 101, one end of the rotary shell 101 is fixedly provided with a motor one 203, the rotating end of the motor one 203 is connected with the cylindrical work station block 201, and a plurality of work station grooves 202 are uniformly arranged on the side wall of the cylindrical work station block 201; the rotary shell 101 is communicated with a circular tube warehouse 204 at the top, and the cylindrical work station block 201 is provided with an avoiding groove for avoiding the movement of the clamping jaw 108.

[0042] In the embodiment of the present application, the circular tube is placed in the circular tube bin 204, the motor 203 drives the cylindrical workpiece block 201 to rotate, when the workpiece groove 202 passes below the circular tube bin 204, the lowermost circular tube in the circular tube bin 204 enters the workpiece groove 202, with the rotation of the cylindrical workpiece block 201, the cylindrical workpiece block 201 drives the circular tube to revolve around the axis of the rotary shell 101 as the center.

[0043] As shown in Figure 5 , Figure 6 and Figure 7 , as a preferred embodiment of the present application, the transmission assembly 3 comprises a mounting block 301 slidingly connected to the top of the telescopic rod 103 along the length direction thereof, the mounting block 301 is fixedly connected to the top of the pull shaft 109, two guide sliding shafts 302 are fixedly arranged on the mounting block 301, two strip-shaped recesses 303 are arranged on the inner walls of the two clamping jaws 108, and the two guide sliding shafts 302 are slidingly connected in the two strip-shaped recesses 303 respectively.

[0044] In the embodiment of the present application, when the two clamping jaws 108 clamp the circular tube, the pull shaft 109 moves downward relative to the support block 107 and the telescopic rod 103, the pull shaft 109 drives the mounting block 301 to move downward relative to the support block 107 and the telescopic rod 103, the mounting block 301 drives the two guide sliding shafts 302 to move downward relative to the support block 107 and the telescopic rod 103, the guide sliding shafts 302 drive the clamping jaws 108 to rotate through the strip-shaped recesses 303, so that the two clamping jaws 108 clamp the circular tube; when the two clamping jaws 108 release the circular tube, the pull shaft 109 moves upward relative to the support block 107 and the telescopic rod 103, the pull shaft 109 drives the mounting block 301 to move upward relative to the support block 107 and the telescopic rod 103, the mounting block 301 drives the two guide sliding shafts 302 to move upward relative to the support block 107 and the telescopic rod 103, the guide sliding shafts 302 drive the clamping jaws 108 to rotate reversely through the strip-shaped recesses 303, so that the two clamping jaws 108 release the circular tube.

[0045] As shown in Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , as a preferred embodiment of the present application, the pull shaft 109 is embedded with a ratchet bar 401 on the side wall thereof, the telescopic rod 103 is provided with a guide groove 402, the guide groove 402 is slidingly connected with an engaging block 403, the engaging block 403 slides radially on the telescopic rod 103, one end of the engaging block 403 is matched with the ratchet bar 401, the other end of the engaging block 403 extends out of the telescopic rod 103 and is provided with an inclined pushing groove 405, the bottom of the rotary guide sleeve 102 is provided with an inclined pushing block 406 matched with the inclined pushing groove 405, and the guide groove 402 is provided with a compression spring 404.

[0046] In the embodiment of the present application, when the clamping jaw 108 completes the clamping of the circular pipe, the circular pipe is separated from the work station groove 202, and due to the vibration of the equipment and other reasons, the telescopic rod 103 is prone to move relative to the pull shaft 109, causing the clamping jaw 108 to loosen and the clamping force to weaken, thereby affecting the clamping effect of the clamping jaw 108. Therefore, the following method is used to avoid the decrease of the clamping force of the clamping jaw 108. In the initial state, the compression spring one 104 pushes the telescopic rod 103 upward, the telescopic rod 103 drives the support block 107 to block the bottom opening 105 at the bottom of the rotary shell 101, and the two clamping jaws 108 are in an open state. The bottom of the telescopic rod 103 is close to the bottom of the rotary guide sleeve 102, the inclined pushing block 406 pushes the meshing block 403 through the inclined pushing groove 405, the compression spring two 404 is in a compressed state, and the meshing block 403 is not engaged with the ratchet bar 401. The cylindrical work station block 201 drives the circular pipe to move above the support block 107 through the work station groove 202. When the two ends of the circular pipe need to be adjusted, the hollow rotary hydraulic cylinder 110 drives the pull shaft 109 to move downward. Under the support of the compression spring one 104, the telescopic rod 103 does not move first, the pull shaft 109 drives the mounting block 301 to move downward, the mounting block 301 drives the two guide sliding shafts 302 to move downward, the downward moving guide sliding shaft 302 drives the clamping jaw 108 to rotate through the strip-shaped depression 303, and then the two clamping jaws 108 clamp the circular pipe to fix the circular pipe on the support block 107. After the clamping jaw 108 cannot continue to rotate, the pull shaft 109 continues to move downward, the pull shaft 109 pulls the telescopic rod 103 downward through the mounting block 301, the clamping jaw 108 and the circular pipe, the telescopic rod 103 moves downward against the elastic force of the compression spring one 104, the compression spring one 104 is gradually compressed, the telescopic rod 103 drives the meshing block 403 to move downward, and when the meshing block 403 is not in contact with the inclined pushing groove 405, the compression spring two 404 drives the meshing block 403 to combine with the ratchet bar 401, thereby limiting the upward movement of the pull shaft 109 relative to the telescopic rod 103, so as to avoid the decrease of the clamping jaw 108 and the poor clamping effect of the clamping jaw 108 caused by the vibration of the equipment and other reasons. When the adjustment of the two ends of the circular pipe is completed, the pull shaft 109 moves upward, the pull shaft 109 drives the telescopic rod 103 to move upward, the telescopic rod 103 drives the support block 107 and the meshing block 403 to move upward, and when the support block 107 drives the circular pipe to enter the work station groove 202 from the bottom opening 105, the inclined pushing block 406 at the bottom of the rotary guide sleeve 102 pushes the meshing block 403 through the inclined pushing groove 405. The meshing block 403 moves away from the ratchet bar 401 against the elastic force of the compression spring two 404. After the meshing block 403 is not combined with the ratchet bar 401, the limitation of the upward movement of the pull shaft 109 relative to the telescopic rod 103 is removed. After the support block 107 contacts the bottom of the rotary shell 101, the support block 107 and the telescopic rod 103 cannot continue to move upward, the pull shaft 109 drives the mounting block 301 to move upward relative to the telescopic rod 103, the mounting block 301 makes the two clamping jaws release the circular pipe and separate from the inside of the rotary shell 101 through the sliding cooperation of the guide sliding shaft 302 and the strip-shaped depression 303.

[0047] As shown in Figure 3 and Figure 4 , as a preferred embodiment of the present application, the rotating assembly 5 includes a motor two 501 fixed at the bottom of the workbench 111 through a support, a gear one 502 fixed at the rotating end of the motor two 501, and a gear two 503 fixed on the side wall of the rotating guide sleeve 102, wherein the gear two 503 is engaged with the gear one 502.

[0048] In the embodiment of the present application, when the two ends of the circular pipe are reversed, the motor two 501 drives the gear one 502 to rotate, the gear one 502 drives the gear two 503 to rotate, the gear two 503 drives the rotating guide sleeve 102 to rotate, and the rotating guide sleeve 102 rotates 180° to complete the reversal of the two ends of the circular pipe.

[0049] As shown in Figure 1 and Figure 3 , as a preferred embodiment of the present application, the welding mechanism 6 includes a fixed assembly 7 arranged at the front side of the slewing shell 101, the fixed assembly 7 positions the circular pipe through the work station groove 202, an electrode block two 605 is fixed at one end of the slewing shell 101 close to the motor one 203, a nut material bin 601 and an L-shaped mounting plate 602 are fixed at the other end of the slewing shell 101, an extension piece one 604 is fixed on the L-shaped mounting plate 602, an electrode block one 603 is connected to the extension end of the extension piece one 604, and a feeding hole is arranged at the other end of the slewing shell 101 below the nut material bin 601.

[0050] In the embodiment of the present application, the extension piece one 604 can be a pneumatic cylinder, an electric telescopic rod, or a hydraulic cylinder. In the initial state, the extension piece one 604 is in the retracted state, a plurality of nuts are stacked in the nut material bin 601, the cylindrical work station block 201 drives the circular pipe in the work station groove 202 to move to the front side of the welding station, the fixed assembly 7 positions the circular pipe through the work station groove 202, the extension piece one 604 is extended, the extension piece one 604 drives the electrode block one 603 to move towards the slewing shell 101, the electrode block one 603 extends into the nut material bin 601 from the feeding hole and pushes the nuts at the bottom of the nut material bin 601 to move towards the slewing shell 101, thereby abutting the nuts against one end of the circular pipe. After the electrode block one 603 and the electrode block two 605 contact the nuts and the circular pipe, the nuts and the circular pipe are further welded by electric current. After welding, the extension piece one 604 is retracted, the extension piece one 604 drives the electrode block one 603 to move reversely and reset, the fixed assembly 7 releases the circular pipe, and the welding of the nuts at one end of the circular pipe is completed.

[0051] As shown in Figure 1 and Figure 9As shown in the drawings, as a preferred embodiment of the present application, the fixing assembly 7 comprises a fixing block 702 and a concave mounting plate 701 fixed on the front side of the rotary shell 101, one end of the fixing block 702 is fixed with two guide shafts 703 which are slidingly connected on the concave mounting plate 701, the concave mounting plate 701 is fixed with an extension piece two 704, the extension end of the extension piece two 704 is connected with the fixing block 702, and the rotary shell 101 is provided with an avoiding opening for avoiding the fixing block 702.

[0052] In the embodiment of the present application, the extension piece two 704 can adopt a pneumatic cylinder, in the initial state, the extension piece two 704 is in the contracted state, the fixing block 702 is separated from the inside of the rotary shell 101, the cylindrical work position block 201 drives the inner pipe in the work position groove 202 to move to the front welding work position, when it is needed to fix the pipe, the extension piece two 704 is elongated, under the guidance of the two guide shafts 703, the extension piece two 704 drives the fixing block 702 to move to the axis of the rotary shell 101, the fixing block 702 cooperates with the work position groove 202 to fix and position the pipe, and the clamping surface of the fixing block 702 is a V-shaped surface; after the welding is completed, the extension piece two 704 is contracted, and the extension piece two 704 drives the fixing block 702 to separate from the inside of the rotary shell 101.

[0053] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, as a preferred embodiment of the present application, the rotary shell 101 is provided with a material returning assembly 8, the material returning assembly 8 comprises a material returning plate 801 rotatingly connected on the rotary shell 101 and an extension piece three 802, the extension end of the extension piece three 802 is rotatingly connected with the material returning plate 801.

[0054] In the embodiment of the present application, the extension piece three 802 can adopt a pneumatic cylinder, in the initial state, the extension piece three 802 is in the elongated state, the material returning plate 801 and the rotary shell 101 form a complete annular support shell, after the pipe and the nuts at both ends are welded, the cylindrical work position block 201 drives the welded pipe and nuts in the work position groove 202 to move to the position of the material returning plate 801, the extension piece three 802 is contracted, the extension piece three 802 drives the material returning plate 801 to rotate, the welded pipe and nuts in the work position groove 202 fall off from the rotary shell 101, and thus the material returning of the welded pipe and nuts is completed.

[0055] The above merely describes the preferred embodiments of the present application and should not be used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dual-hopper, multi-station nut welding machine, comprising a worktable, characterized in that, Also includes: A rotating outer shell is fixed on the top of the workbench. Inside the rotating outer shell is a workstation switching component. The workstation switching component is used to drive multiple round tubes to switch workstations around the axis of the rotating outer shell. A welding mechanism is installed on the front side of the rotating housing, which is used to weld the round tube to the nut; The bottom of the rotary housing is provided with a bottom notch, and a direction adjustment mechanism is provided below the bottom notch. The direction adjustment mechanism includes a support block provided at the bottom notch, a telescopic rod fixed at the bottom of the support block, and a rotating guide sleeve slidably connected to the outside of the telescopic rod along its length. The rotating guide sleeve is rotatably connected to the rotary housing. A rotating assembly is connected to the bottom of the worktable. The rotating assembly is used to drive the rotating guide sleeve to rotate. A compression spring is fixed on the side wall of the rotating guide sleeve, and the end of the compression spring is fixed on the telescopic rod. A hollow rotary hydraulic cylinder is fixed to the bottom of the workbench by a bracket. The telescopic end of the hollow rotary hydraulic cylinder is connected to a pull shaft. Two grippers are rotatably connected to the middle of the support block. The pull shaft passes through the telescopic rod and is connected to the two grippers through a transmission assembly. When the pull shaft moves downward, the transmission assembly drives the two grippers to clamp the round tube.

2. The dual-hopper multi-station nut welding machine according to claim 1, characterized in that, The workstation switching component includes a cylindrical workstation block rotatably connected inside a rotary housing. A motor is fixed at one end of the rotary housing, and the rotating end of the motor is connected to the cylindrical workstation block. Multiple workstation slots are evenly arranged on the side wall of the cylindrical workstation block.

3. The dual-hopper multi-station nut welding machine according to claim 1, characterized in that, The top of the rotating outer shell is connected to a circular tubular hopper.

4. The dual-hopper multi-station nut welding machine according to claim 1, characterized in that, The transmission assembly includes a mounting block that is slidably connected to the top of the telescopic rod along its length. The mounting block is fixedly connected to the top of the pull shaft. Two guide shafts are fixed on the mounting block. The inner walls of the two grippers are provided with strip grooves. The two guide shafts are slidably connected in the two strip grooves respectively.

5. The dual-hopper multi-station nut welding machine according to claim 1, characterized in that, A ratchet rack is embedded and fixed on the side wall of the pull shaft. A guide groove is provided on the telescopic rod. A meshing block is slidably connected in the guide groove. The meshing block slides radially on the telescopic rod. One end of the meshing block engages with the ratchet rack, and the other end of the meshing block extends out of the telescopic rod and is provided with a slanted push groove. A slanted push block that engages with the slanted push groove is provided at the bottom of the rotating guide sleeve. A compression spring is provided in the guide groove.

6. The dual-hopper multi-station nut welding machine according to claim 1, characterized in that, The rotating assembly includes a second motor fixed to the bottom of the worktable via a bracket, a first gear fixed to the rotating end of the second motor, a second gear fixed to the side wall of the rotating guide sleeve, and the second gear meshing with the first gear.

7. The dual-hopper multi-station nut welding machine according to claim 2, characterized in that, The welding mechanism includes a fixing component set on the front side of the rotating shell. The fixing component positions the round tube through the work station slot. An electrode block two is fixed at one end of the rotating shell near the motor one. A nut hopper and an L-shaped mounting plate are fixed at the other end of the rotating shell. A telescopic component one is fixed on the L-shaped mounting plate. The telescopic end of the telescopic component one is connected to the electrode block one. A feeding hole is provided at the lower part of the nut hopper and the other end of the rotating shell.

8. The dual-hopper multi-station nut welding machine according to claim 7, characterized in that, The fixing component includes a fixing block and a concave mounting plate fixed to the front side of the rotating housing. Two guide shafts are fixed to one end of the fixing block and are slidably connected to the concave mounting plate. A telescopic component two is fixed to the concave mounting plate and the telescopic end of the telescopic component two is connected to the fixing block. A clearance opening for avoiding the fixing block is provided on the rotating housing.

9. The dual-hopper multi-station nut welding machine according to claim 1, characterized in that, The rotating housing is equipped with a material ejection assembly, which includes a material ejection plate and a telescopic component three that are rotatably connected to the rotating housing. The telescopic end of the telescopic component three is rotatably connected to the material ejection plate.

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