Machining and welding device and welding method for electrical contact

Abstract

The invention relates to a machining and welding device and method for an electrical contact, the welding device comprises a rack, a base used for bearing the electrical contact and a welding gun used for welding are arranged on the rack, a rotation driving assembly used for controlling the base to rotate is arranged on the rack, and a supporting rod used for being connected with the rack is arranged on the welding gun; a pressing mechanism is arranged on the base, the pressing mechanism comprises at least three supporting frames and a mounting frame, a connecting rod is hinged to each supporting frame, and a butt joint seat in butt joint with the connecting rods is arranged on the mounting frame; the mounting rack is provided with a pressing rod used for pressing the electrical contact and a linear driver used for driving the pressing rod to stretch out and draw back. The welding device further comprises a connecting mechanism used for controlling the connecting rod to be connected with the butt joint base. According to the electric contact annular welding device, the function that the welding gun conducts annular welding on the contact is not affected while the electric contact is continuously pressed, and the problem that welding dead angles are caused due to the fact that the pressing block used for pressing the electric contact shields the welding position is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electric contact processing and welding, and in particular to an electric contact processing and welding device and a welding method. Background Art

[0002] AgSnO2 contact is a contact material with excellent electrical contact performance and is widely used in various electrical switches. Since the shapes of electrical contacts are different and have different welding requirements according to specific application scenarios, the clamping and moving accuracy of electrical contacts are also required to be high during the welding process.

[0003] To this end, the Chinese utility model patent with authorization announcement number CN222327054U discloses a welding device for an electric contact processing procedure, which clamps the electric contact on the clamping block at the end of the first rotating shaft and the second rotating shaft by setting a pad block, an electric telescopic rod, a first sliding rod, a second sliding rod, and a rotatable first rotating shaft and a second rotating shaft on the first sliding rod and the second sliding rod, so that the second motor can be used to drive the first rotating shaft to realize a 360-degree vertical rotation of the entire electric contact, and the rotating seat can also be rotated, so as to facilitate multi-angle adjustment of the electric contact to adapt to welding processing operations in different positions.

[0004] For applications that require high reliability, high electrical performance or specific mechanical strength, it is necessary to ensure good electrical connection and mechanical fixation between the contact and the copper sheet. Therefore, circular welding is required to connect the copper sheet and the AgSnO2 contact to provide stronger connection strength and better electrical conductivity. When performing circular welding, in order to ensure the welding quality, the contact needs to be pressed against the copper sheet. However, the pressing block used to press the contact will block the contact, resulting in the welding gun being unable to pass over the pressing block to weld the contact. This results in the need to loosen the contact during the welding process and press the contact again from other positions. During the secondary pressing process, the contact is re-pressed, which may cause deformation of the solder that has not been fully cooled. At the same time, the inconsistent welding will also affect the welding quality. Summary of the invention

[0005] In view of the above problems, a processing welding device and a welding method for electric contacts are provided, which solve the problem that the pressing block used to press the electric contacts will block the welding position and cause welding dead angles through a base, a rotating drive assembly, a welding gun and a clamping mechanism.

[0006] In order to solve the problems of the prior art, the present invention provides a processing and welding device for electric contacts, comprising a frame, the frame is provided with a base for supporting the electric contacts and a welding gun for welding, and the frame is provided with a rotating drive assembly for controlling the rotation of the base, and the welding gun is provided with a support rod for connecting to the frame; a clamping mechanism is provided on the base, the clamping mechanism comprises a supporting frame and a mounting frame, and at least three supporting frames are provided, each supporting frame is hinged with a connecting rod, and the mounting frame is provided with a docking seat docked with the connecting rod; the mounting frame is provided with a pressure rod for clamping the electric contacts and a linear drive for driving the pressure rod to extend and retract; the welding device also includes a connecting mechanism for controlling the connection between the connecting rod and the docking seat; during the rotation of the base, when the support rod of the welding gun contacts the connecting rod, the connecting rod is pushed, and the connecting mechanism disconnects the connection between the connecting rod and the docking seat, and the connecting rod is separated from the docking seat under the action of the thrust.

[0007] Preferably, the connecting mechanism includes a connecting assembly for connecting the docking seat and the connecting rod, the connecting assembly includes a clamping block and a first elastic member; the clamping block is slidably arranged on the docking seat, and a clamping groove cooperating with the clamping block is provided at one end of the connecting rod away from the support frame; the two ends of the first elastic member are respectively connected to the clamping block and the docking seat.

[0008] Preferably, a push block is slidably provided on the connecting rod, the push block is connected to the first push rod, and an auxiliary control mechanism for controlling the sliding of the first push rod is provided on the connecting rod.

[0009] Preferably, the auxiliary control mechanism includes a lateral bracket and a transmission assembly; the lateral bracket is telescopically arranged on the connecting rod, and a second elastic member is provided on the lateral bracket, and both ends of the second elastic member are respectively connected to the lateral bracket and the connecting rod; the lateral bracket is transmission-connected to the first push rod through the transmission assembly.

[0010] Preferably, the transmission assembly includes a wedge block and a second push rod; the wedge block is connected to the first push rod, and the second push rod is connected to the lateral support; when the lateral support contracts, the second push rod squeezes the wedge block to push the first push rod to move.

[0011] Preferably, a third elastic member for controlling the resetting of the wedge block is provided on the wedge block, and two ends of the third elastic member are respectively connected to the wedge block and the connecting rod.

[0012] Preferably, a positioning column is provided on the frame, a sensor for sensing the position of the support frame is provided on the positioning column, and a receiver cooperating with the sensor is provided on the support frame.

[0013] Preferably, a guide rail is provided on the frame, a material transfer platform is slidably provided on the guide rail, a roller is provided at the bottom of the material transfer platform, and a servo motor for controlling the rotation of the roller is built into the material transfer platform; a storage groove that can be aligned with the guide rail is provided on the base.

[0014] Preferably, the rotary drive assembly includes a main shaft, a worm wheel, a worm and a rotary driver; the main shaft is rotatably arranged on the frame and is coaxially connected to the base; the worm wheel is sleeved on the main shaft, the worm is rotatably arranged on the frame, and the worm wheel is meshingly connected with the worm; the rotary driver is arranged on the base, and the rotary driver is used to drive the worm to rotate.

[0015] Preferably, the following steps are included: S1, placing the electric contact and the copper sheet on the base, and then driving the pressure rod to extend through the linear drive, and pressing the electric contact from the top of the electric contact through the pressure rod; S2, starting the rotary drive assembly to drive the base to rotate, and at the same time welding the electric contact through the welding gun; in step S2, when the support rod contacts the connecting rod, the connecting rod is pushed to rotate, so that the connecting rod is separated from the mounting frame until the connecting rod completely passes through the support rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention realizes the function of continuously pressing the electric contact without affecting the ring welding of the contact by the welding gun through the base, the rotary drive assembly, the welding gun and the clamping mechanism. By arranging the pressure rod and the linear driver on the base, the pressure rod and the linear driver can be driven to rotate synchronously when the base is driven to rotate by the rotary drive assembly, so as to avoid the relative force between the pressure rod and the contact in the process of pressing the contact, thereby avoiding the problem that the contact is offset by force during welding and affects the welding accuracy. The mounting frame is provided with supporting force by the docking of the connecting rod and the docking seat. When the support rod pushes the connecting rod, the connecting rod is separated from the docking seat, while the remaining at least two connecting rods are still docked with the docking seat under the elastic force of the torsion spring, so as to maintain the support stability of the mounting frame, thereby solving the problem that the pressure block used to press the electric contact will block the welding position and cause a welding dead angle.

[0018] 2. The present invention realizes the function of connecting the docking seat and the connecting rod through the card block, the first elastic member and the card slot. When the card block is plugged into the card slot, the docking seat and the connecting rod are stably connected. When the connecting rod is reset under the elastic force of the torsion spring, the card block is squeezed when the connecting rod contacts the card block, and the card block transfers the pressure to the first elastic member. The first elastic member shrinks under the pressure until the card block moves to the card slot on the connecting rod. The card block slides into the card slot under the elastic force of the first elastic member. In this process, the connecting rod can be controlled to rotate by squeezing the groove wall of the card slot on the connecting rod, and the connecting rod can be controlled to reset stably. In the process of the card block and the card slot being connected, the position of the connecting rod is further corrected, thereby stabilizing the position of the mounting frame, and avoiding the displacement of the mounting frame during the connection process and affecting the position stability of the pressure rod.

[0019] 3. The present invention realizes the function of controlling the separation of the card block and the card slot through the push rod, the push block and the auxiliary control mechanism, so as to avoid the large squeezing effect after the support rod and the connecting rod come into contact, thereby affecting the position stability of the pressure rod. When the support rod comes into contact with the connecting rod, the auxiliary control mechanism controls the push rod to move in the direction close to the mounting frame, and the push rod drives the push block to move, and then squeezes the card block through the push block, so that the card block is separated from the card slot. Then, the connecting rod is pushed to rotate by the support rod to avoid a large force between the support rod and the connecting rod, thereby reducing the vibration effect on the mounting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a first viewing angle of a processing and welding device for an electric contact of the present invention.

[0021] Figure 2 It is a three-dimensional schematic diagram of a base, a clamping mechanism, a connecting mechanism and an auxiliary control mechanism in a processing and welding device for an electric contact of the present invention.

[0022] Figure 3 It is a three-dimensional schematic diagram of a mounting frame and a connecting assembly in a processing and welding device for an electric contact of the present invention.

[0023] Figure 4 It is a three-dimensional exploded schematic diagram of the cooperation between a support frame, a connecting rod and a connecting assembly in a processing and welding device for an electric contact of the present invention.

[0024] Figure 5 It is a three-dimensional schematic diagram of a support rod in a processing and welding device for an electric contact of the present invention being in a reset state.

[0025] Figure 6 It is a three-dimensional exploded schematic diagram of a support rod in a processing and welding device for an electric contact of the present invention.

[0026] Figure 7 The utility model is a side view of the cooperation between a push block and a docking seat in a processing and welding device for an electric contact of the present invention.

[0027] Figure 8 It is a three-dimensional schematic diagram of a support rod and a connecting rod in a processing and welding device for an electric contact of the present invention when they are in abutment.

[0028] Fig. 9 It is a top view of a processing and welding device for electric contacts of the present invention in a working state.

[0029] Fig.10 It is a stereoscopic schematic diagram of a second viewing angle of an electric contact processing and welding device of the present invention.

[0030] The numbers in the figure are: 1, frame; 11, base; 111, storage slot; 12, rotary drive assembly; 121, spindle; 122, worm gear; 123, worm; 124, rotary drive; 13, welding gun; 131, support rod; 14, positioning column; 15, guide rail; 151, material transfer table; 2, clamping mechanism; 21, support frame; 211, connecting rod; 2111, slot; 22, mounting frame; 221, docking seat; 222, pressure rod; 223, linear drive; 3, connecting mechanism; 31, connecting assembly; 311, block; 312, first elastic member; 32, push block; 321, first push rod; 4, auxiliary control mechanism; 41, lateral bracket; 411, second elastic member; 42, transmission assembly; 421, wedge block; 422, second push rod; 423, third elastic member. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1-Figure 4 A processing and welding device for electric contacts, comprising a frame 1, a base 11 for supporting electric contacts and a welding gun 13 for welding are provided on the frame 1, and a rotating drive assembly 12 for controlling the rotation of the base 11 is provided on the frame 1, and a support rod 131 for connecting with the frame 1 is provided on the welding gun 13; a pressing mechanism 2 is provided on the base 11, and the pressing mechanism 2 includes a supporting frame 21 and a mounting frame 22, and at least three supporting frames 21 are provided, each supporting frame 21 is hinged with a connecting rod 211, and the mounting frame 22 is provided with a connecting rod 211. The mounting frame 22 is provided with a pressure rod 222 for pressing the electric contact and a linear drive 223 for driving the pressure rod 222 to extend and retract; the welding device also includes a connecting mechanism 3 for controlling the connection between the connecting rod 211 and the docking seat 221; during the rotation of the base 11, when the support rod 131 of the welding gun 13 contacts the connecting rod 211, the connecting rod 211 is pushed, and the connecting mechanism 3 disconnects the connection between the connecting rod 211 and the docking seat 221, and the connecting rod 211 is separated from the docking seat 221 under the action of the thrust.

[0033] The present invention realizes the function of continuously pressing the electric contacts without affecting the circular welding of the contacts by the welding gun 13 through the base 11, the rotary drive assembly 12, the welding gun and the clamping mechanism 2. By arranging the pressure rod 222 and the linear driver 223 on the base 11, when the base 11 is driven to rotate by the rotary drive assembly 12, the pressure rod 222 and the linear driver 223 can be driven to rotate synchronously, thereby avoiding the relative force between the pressure rod 222 and the contact during the process of pressing the contact, thereby avoiding the problem of the contact being offset by force during the welding process and affecting the welding accuracy.

[0034] The connecting rod 211 is connected to the docking seat 221 to provide support force for the mounting frame 22. When the support rod 131 pushes the connecting rod 211, the connecting rod 211 is separated from the docking seat 221, while the remaining at least two connecting rods 211 are still connected to the docking seat 221 under the elastic force of the torsion spring, so as to maintain the support stability of the mounting frame 22, thereby solving the problem that the pressing block used to press the electrical contact will block the welding position and cause a welding dead angle. When the connecting rod 211 is separated from the support rod 131 without losing the squeezing effect of the support rod 131, it will automatically engage with the docking seat 221 under the action of the elastic force. In order to prevent the mounting frame 22 from being offset due to the force applied during the rotation process, the effect of limiting and guiding the connecting rod 211 by the docking seat 221 is limited. For this purpose, a connecting mechanism 3 for connecting the docking seat 221 and the connecting rod 211 is provided. The connection mechanism 3 needs to be able to stably connect the docking seat 221 and the connecting rod 211, and at the same time, push the connecting rod 211 through the support rod 131 to disconnect. To this end, two permanent magnets can be set on the connecting rod 211 and the docking seat 221 respectively. When the connecting rod 211 is pushed by the support rod 131, the connection between the docking seat 221 and the connecting rod 211 can be quickly disconnected. When the connecting rod 211 rotates to the docking seat 221 under the elastic force of the torsion spring, it can dock with the docking seat 221 through magnetic force. A controller for human-machine interaction is provided on the frame 1, and the rotary drive assembly 12 and the linear drive 223 are electrically connected to the controller.

[0035] In the working state, the operator assembles the electric contact and the copper sheet together, and then places the copper sheet and the electric contact on the base 11, and makes the axis of the electric contact collinear with the axis of the base 11. Then, the linear drive 223 drives the pressure rod 222 to extend, and then the pressure rod 222 presses the electric contact onto the copper sheet, completing the fixation of the copper sheet and the electric contact. Then, the base 11 is driven to rotate by the rotary drive assembly 12, and the base 11 drives the copper sheet and the electric contact to rotate, and the welding gun 13 performs annular welding on the electric contact during the rotation process. During the rotation process of the base 11, the support rod 131 provides a pushing effect on the connecting rod 211, so that the support rod 131 can smoothly pass through the connecting rod 211, and when the support rod 131 pushes the connecting rod 211, the mounting frame 22 is supported by the remaining connecting rods 211, so as to ensure the pressing stability of the pressure rod 222 on the electric contact.

[0036] Reference Figure 2-Figure 5 and Figure 7: The connecting mechanism 3 includes a connecting component 31 for connecting the docking seat 221 and the connecting rod 211, and the connecting component 31 includes a clamping block 311 and a first elastic member 312; the clamping block 311 is slidably set on the docking seat 221, and a clamping groove 2111 that cooperates with the clamping block 311 is opened at one end of the connecting rod 211 away from the support frame 21; the two ends of the first elastic member 312 are respectively connected to the clamping block 311 and the docking seat 221.

[0037] The present invention realizes the function of connecting the docking seat 221 and the connecting rod 211 through the block 311, the first elastic member 312 and the slot 2111. When the block 311 is plugged and matched with the slot 2111, the docking seat 221 and the connecting rod 211 are stably connected. In order to facilitate the separation of the block 311 and the slot 2111, the end of the block 311 is set to be spherical. Through the arc surface at the end of the block 311, when the connecting rod 211 is reset under the elastic force of the torsion spring, when the connecting rod 211 contacts the block 311, the block 311 is squeezed, and the block 311 transmits the pressure to the first elastic member 312. The first elastic member 312 shrinks under the pressure until the block 311 moves to the slot 2111 on the connecting rod 211, and the block 311 slides into the slot 2111 under the elastic force of the first elastic member 312. In this process, the connecting rod 211 can be controlled to rotate by squeezing the groove wall of the groove 2111 on the connecting rod 211 by the clamping block 311, and the connecting rod 211 can be controlled to be stably reset. In the process of clamping the clamping block 311 and the groove 2111, the position of the connecting rod 211 is further corrected, and the position of the mounting bracket 22 is stabilized, so as to prevent the mounting bracket 22 from deviating during the connection process and affecting the position stability of the pressing rod 222.

[0038] Reference Figure 2 , Figure 4 and Figure 7 : A push block 32 is slidably provided on the connecting rod 211, the push block 32 is connected to the first push rod 321, and an auxiliary control mechanism 4 for controlling the sliding of the first push rod 321 is provided on the connecting rod 211.

[0039] The present invention realizes the function of controlling the block 311 to separate from the slot 2111 through the first push rod 321, the push block 32 and the auxiliary control mechanism 4, so as to avoid the support rod 131 and the connecting rod 211 from generating a large squeezing effect after contact, thereby affecting the position stability of the pressure rod 222. The push block 32 has an inclined surface at one end away from the first push rod 321, so that the push block 32 can gradually push the block 311 to move. The block 311 is forced out of the slot 2111 by the squeezing action of the support rod 131 on the connecting rod 211. If the insertion depth of the block 311 and the slot 2111 is shallow, the connection strength of the block 311 to the connecting rod 211 will be poor. If the matching depth of the block 311 and the slot 2111 is deep, the thrust required to push the connecting rod 211 through the support rod 131 is large. After the block 311 is separated from the slot 2111, the connecting rod 211 will swing quickly, and then generate a large reaction force on the mounting frame 22, so that the mounting frame 22 generates a strong vibration, affecting the position stability of the pressure rod 222. For this reason, a push block 32 and a first push rod 321 are provided for pushing the block 311 to move away from the slot 2111. When the support rod 131 contacts the connecting rod 211, the auxiliary control mechanism 4 controls the first push rod 321 to move toward the mounting frame 22, and the first push rod 321 drives the push block 32 to move, and then the push block 32 squeezes the clamping block 311, so that the clamping block 311 is separated from the clamping groove 2111. Then, the support rod 131 pushes the connecting rod 211 to rotate, so as to avoid a large force between the support rod 131 and the connecting rod 211, thereby reducing the vibration of the mounting frame 22.

[0040] Reference Figure 2 , Figure 4-Figure 6 and Figure 8 : The auxiliary control mechanism 4 includes a lateral bracket 41 and a transmission assembly 42; the lateral bracket 41 is telescopically arranged on the connecting rod 211, and a second elastic member 411 is provided on the lateral bracket 41, and the two ends of the second elastic member 411 are respectively connected to the lateral bracket 41 and the connecting rod 211; the lateral bracket 41 is transmission-connected to the first push rod 321 through the transmission assembly 42.

[0041] The present invention realizes the function of driving the first push rod 321 to move by the squeezing effect provided by the support rod 131 on the connecting rod 211 through the lateral support 41 and the transmission assembly 42 . When the lateral support 41 is contracted, the first push rod 321 is driven to move by the transmission assembly 42, and the first push rod 321 drives the push block 32 to move. After the push block 32 contacts the card block 311, an extrusion force is applied to the card block 311. Under the action of the extrusion force, the card block 311 moves in a direction away from the card slot 2111, so that the card block 311 is separated from the card slot 2111, and the connecting rod 211 is smoothly rotated under the pushing action of the card rod 131, and the card rod 131 is smoothly passed through the connecting rod 211, and the electrical contact is continuously welded.

[0042] Reference Figure 5 , Figure 6 and Fig. 9 : The transmission assembly 42 includes a wedge block 421 and a second push rod 422; the wedge block 421 is connected to the first push rod 321, and the second push rod 422 is connected to the lateral support 41; when the lateral support 41 contracts, the second push rod 422 squeezes the wedge block 421 to push the first push rod 321 to move.

[0043] The present invention realizes driving the wedge block 421 and the first push rod 321 to move when the lateral bracket 41 moves by means of the wedge block 421 and the second push rod 422. During the rotation process of the base 11, when the lateral bracket 41 contacts the support rod 131 and is subjected to the reaction force provided by the support rod 131, the lateral bracket 41 and the second push rod 422 move under the force, and the second push rod 422 contacts the wedge block 421 and pushes the wedge block 421 to move, and the wedge block 421 pushes the push block 32 to move through the first push rod 321, and the push block 32 contacts the clamping block 311 and pushes the clamping block 311, so that the clamping block 311 is separated from the clamping slot 2111, and the connection of the connection assembly 31 is disconnected. Then, the connection of the connection assembly 31 is disconnected by the squeezing action of the support rod 131 and the lateral bracket 41.

[0044] Reference Figure 5 , Figure 6 and Fig. 9 A third elastic member 423 for controlling the reset of the wedge block 421 is disposed on the wedge block 421, and two ends of the third elastic member 423 are respectively connected to the wedge block 421 and the connecting rod 211.

[0045] The present invention realizes the function of controlling the reset of the wedge block 421 through the third elastic member 423. As the base 11 rotates, the support rod 131 will continue to push the connecting rod 211 after passing through the connecting rod 211 until the connecting rod 211 is completely separated from the support rod 131. At this time, the lateral bracket 41 is reset under the elastic force of the second elastic member 411, and the connecting rod 211 is reset under the elastic force of the torsion spring, and the block 311 is aligned with the slot 2111 again. The block 311 is plugged and matched with the slot 2111 under the elastic force of the first elastic member 312. Although the squeezing effect of the block 311 on the push block 32 can control the reset of the push block 32 to a certain extent, the resistance to the extension of the block 311 will increase, and the block 311 and the slot 2111 may not fit in place. To this end, a third elastic member 423 is provided for controlling the reset of the wedge block 421. After the lateral bracket 41 is reset, the second push rod 422 no longer squeezes the wedge block 421. The wedge block 421 is reset under the elastic force of the third elastic member 423. The wedge block 421 drives the push block 32 to reset through the first push rod 321.

[0046] Reference Figure 1 and Figure 7 : A positioning column 14 is provided on the frame 1, a sensor for sensing the position of the support frame 21 is provided on the positioning column 14, and a receiver cooperating with the sensor is provided on the support frame 21.

[0047] The present invention realizes the function of positioning the rotation angle of the base 11 through the positioning column 14 and the sensor arranged on the positioning column 14. In order to accurately complete the annular welding of the electric contact, the positioning column 14 and the sensor for judging the rotation angle of the base 11 are arranged. The sensor is preferably a photoelectric sensor, and when the rotation drive assembly 12 controls the base 11 to rotate, the sensor is separated from the receiver. As the base 11 rotates, when the sensor and the receiver are docked again, the base 11 just rotates one circle.

[0048] Reference Figure 1 , Figure 2 and Fig. 9 : The frame 1 is provided with a guide rail 15, on which a material transfer platform 151 is slidably provided, a roller is provided at the bottom of the material transfer platform 151, and a servo motor for controlling the rotation of the roller is built into the material transfer platform 151; the base 11 is provided with a storage groove 111 that can be aligned with the guide rail 15.

[0049] The present invention realizes the function of automatically transferring electric contacts through the guide rail 15, the material moving platform 151 and the storage slot 111. When performing welding processing, the operator places the copper sheet on the material moving platform 151, then assembles the electric contact on the copper sheet, and then drives the roller to rotate through the built-in servo motor of the material moving platform 151 to control the material moving platform 151 to move along the guide rail 15. Until the material moving platform 151 moves to the storage slot 111 on the base 11, the welding process is performed. During the movement of the material moving platform 151, the angle of the base 11 is determined by the cooperation of the sensor on the positioning column 14 and the receiver on the support frame 21, so that the storage slot 111 on the base 11 can be accurately aligned with the guide rail 15.

[0050] Reference Figure 1 and Fig.10 : The rotary drive assembly 12 includes a main shaft 121, a worm wheel 122, a worm 123 and a rotary driver 124; the main shaft 121 is rotatably set on the frame 1 and is coaxially connected to the base 11; the worm wheel 122 is sleeved on the main shaft 121, and the worm 123 is rotatably set on the frame 1, and the worm wheel 122 is meshed and connected with the worm 123; the rotary driver 124 is set on the base 11, and the rotary driver 124 is used to drive the worm 123 to rotate.

[0051] The present invention realizes the function of driving the base 11 to rotate through the main shaft 121, the worm gear 122, the worm 123 and the rotary driver 124. A pulley is sleeved on the driving end of the worm 123 and the rotary driver 124, and a transmission belt is sleeved on the pulley, and the two pulleys are connected by the transmission belt. In order to enable the welding gun 13 to perform continuous circular welding on the electric contact, a rotary drive assembly 12 is provided to drive the base 11 to rotate, and through the self-locking performance of the worm gear 122 and the worm 123, when the guide rail 15 is aligned with the storage slot 111, the base 11 can be prevented from being offset and affecting the smooth movement of the material transfer platform 151. The rotary driver 124 is preferably a servo motor, and the rotary driver 124 is electrically connected to the controller. When the material transfer platform 151 moves to the storage slot 111, the controller sends a signal to the rotation driver 124. After receiving the signal, the rotation driver 124 drives the worm 123 to rotate, and the worm 123 drives the worm wheel 122 meshing with it to rotate. The worm wheel 122 drives the main shaft 121 and the base 11 to rotate, and then the subsequent welding process is carried out.

[0052] Reference Figure 1-Figure 5: It includes the following steps: S1, placing the electric contact and the copper sheet on the base 11, and then driving the pressure rod 222 to extend through the linear drive 223, and pressing the electric contact from the top of the electric contact through the pressure rod 222; S2, starting the rotation drive component 12 to drive the base 11 to rotate, and at the same time welding the electric contact through the welding gun 13; in step S2, when the support rod 131 contacts the connecting rod 211, the connecting rod 211 is pushed to rotate, so that the connecting rod 211 is separated from the mounting frame 22 until the connecting rod 211 completely passes through the support rod 131.

[0053] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A processing and welding device for electric contacts, characterized in that: The invention comprises a frame (1), the frame (1) being provided with a base (11) for supporting an electric contact and a welding gun (13) for welding, the frame (1) being provided with a rotation drive assembly (12) for controlling the rotation of the base (11), and the welding gun (13) being provided with a support rod (131) for connecting to the frame (1); A clamping mechanism (2) is provided on the base (11), the clamping mechanism (2) comprising a support frame (21) and a mounting frame (22), at least three support frames (21) are provided, each support frame (21) is hinged with a connecting rod (211), and the mounting frame (22) is provided with a docking seat (221) docking with the connecting rod (211); The mounting frame (22) is provided with a pressure rod (222) for pressing the electric contact and a linear drive (223) for driving the pressure rod (222) to extend and retract. The welding device also includes a connection mechanism (3) for controlling the connection between the connection rod (211) and the docking seat (221); During the rotation of the base (11), when the support rod (131) of the welding gun (13) contacts the connecting rod (211), the connecting rod (211) is pushed, and the connecting mechanism (3) disconnects the connection between the connecting rod (211) and the docking seat (221), and the connecting rod (211) is separated from the docking seat (221) under the action of the thrust.

2. The electrical contact processing and welding device according to claim 1, characterized in that: The connection mechanism (3) comprises a connection assembly (31) for connecting the docking seat (221) and the connection rod (211), and the connection assembly (31) comprises a clamping block (311) and a first elastic member (312); The clamping block (311) is slidably arranged on the docking seat (221), and a clamping groove (2111) matching with the clamping block (311) is formed at one end of the connecting rod (211) away from the supporting frame (21); Two ends of the first elastic member (312) are respectively connected to the clamping block (311) and the docking seat (221).

3. The electrical contact processing and welding device according to claim 2, characterized in that: A push block (32) is slidably arranged on the connecting rod (211), the push block (32) is connected to a first push rod (321), and an auxiliary control mechanism (4) for controlling the sliding of the first push rod (321) is arranged on the connecting rod (211).

4. The electrical contact processing and welding device according to claim 3, characterized in that: The auxiliary control mechanism (4) comprises a lateral support (41) and a transmission assembly (42); The lateral support (41) is telescopically arranged on the connecting rod (211), and a second elastic member (411) is arranged on the lateral support (41), and two ends of the second elastic member (411) are respectively connected to the lateral support (41) and the connecting rod (211); The lateral support (41) is transmission-connected to the first push rod (321) via a transmission assembly (42).

5. The electrical contact processing and welding device according to claim 4, characterized in that: The transmission assembly (42) includes a wedge block (421) and a second push rod (422); The wedge block (421) is connected to the first push rod (321), and the second push rod (422) is connected to the lateral support (41); When the lateral support (41) contracts, the second push rod (422) squeezes the wedge block (421) to push the first push rod (321) to move.

6. The electrical contact processing and welding device according to claim 5, characterized in that: The wedge block (421) is provided with a third elastic member (423) for controlling the reset of the wedge block (421), and two ends of the third elastic member (423) are respectively connected to the wedge block (421) and the connecting rod (211).

7. The electrical contact processing and welding device according to claim 1, characterized in that: The frame (1) is provided with a positioning column (14), the positioning column (14) is provided with a sensor for sensing the position of the support frame (21), and the support frame (21) is provided with a receiver that cooperates with the sensor.

8. The electrical contact processing and welding device according to claim 1, characterized in that: A guide rail (15) is provided on the frame (1), a material transfer platform (151) is slidably provided on the guide rail (15), a roller is provided at the bottom of the material transfer platform (151), and a servo motor for controlling the rotation of the roller is built into the material transfer platform (151); The base (11) is provided with a storage groove (111) which can be aligned with the guide rail (15).

9. The electrical contact processing and welding device according to claim 1, characterized in that: The rotary drive assembly (12) comprises a main shaft (121), a worm wheel (122), a worm (123) and a rotary drive (124); The main shaft (121) is rotatably disposed on the frame (1) and is coaxially connected to the base (11); The worm wheel (122) is sleeved on the main shaft (121), the worm (123) is rotatably arranged on the frame (1), and the worm wheel (122) and the worm (123) are meshingly connected; The rotary driver (124) is arranged on the base (11), and the rotary driver (124) is used to drive the worm (123) to rotate.

10. A method for processing and welding an electric contact, using an apparatus for processing and welding an electric contact as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, placing the electric contact and the copper sheet on the base (11), then driving the pressing rod (222) to extend through the linear drive (223), and pressing the electric contact from the top of the electric contact through the pressing rod (222); S2, starting the rotary drive assembly (12) to drive the base (11) to rotate, and at the same time performing welding processing on the electrical contacts through the welding gun (13); In step S2, when the support rod (131) contacts the connecting rod (211), the connecting rod (211) is pushed to rotate, so that the connecting rod (211) is separated from the mounting frame (22), until the connecting rod (211) completely passes through the support rod (131).

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