A copper ring welding device with pre-assembly function for manufacturing slip ring

Abstract

This invention discloses a copper ring welding device with pre-assembly function for slip ring manufacturing, belonging to the field of automatic arc welding equipment. It includes a worktable with a collection tank on it. A pre-assembly component and a wire feeding assembly are respectively located on both sides of the collection tank. A welding mechanism is located on the side of the pre-assembly component away from the wire feeding assembly. A vibrating feeding plate is located on the side of the pre-assembly component, and an ejector component is mounted on the pre-assembly component. This invention achieves precise positioning and rigid clamping of the copper ring and wire by setting the pre-assembly component, preventing welding misalignment caused by arc thermal stress. Through the coordinated action of the piston cylinder, ejector slider, and energy storage lock plate, the welded copper ring and wire can be ejected into the collection tank, preventing workpiece accumulation at the welding station. The length difference between the feeding pusher block and the ejector pusher block allows the pusher block to sequentially complete three actions in one stroke: copper ring feeding, pushing to the ejection station, and triggering ejection energy storage.

Description

Technical Field

[0001] This invention relates to the field of automatic arc welding equipment, and more particularly to a copper ring welding device with pre-assembly function for slip ring manufacturing. Background Technology

[0002] A slip ring is a component that continuously transmits electrical energy, electrical signals, or data between rotating and stationary parts. Its core components are a copper ring and a brush. During the manufacturing process of a slip ring, wires need to be welded to the copper ring. Existing automated copper ring welding equipment mostly uses automatic arc welding to weld it. However, existing automated copper ring welding equipment lacks a temporary fixing effect on the wire and copper ring during the welding process. It relies solely on the wire feeding assembly to align the stripped wire and copper ring, resulting in insufficient dynamic stability during the welding process. When welding is performed using automatic arc welding, the thermal stress generated by the arc and the mechanical micro-disturbance of the device itself can easily cause relative displacement between the aligned wire and copper ring, which can easily lead to process defects such as incomplete welding and weak welds. Meanwhile, the existing automated copper ring welding device can only push the welded copper ring and wire out of the welding station from bottom to top. This pushing stroke can only move the welding assembly from the precision positioning point to the edge area of ​​the station, and then the power is withdrawn. Due to the lack of an active cleaning action that gives the workpiece enough kinetic energy to completely remove it from the work cycle, the pushed workpiece is very likely to be stuck in the exit transition area. Under friction or slight interference, it cannot reliably fall into the selected collection area, which leads to the accumulation of workpieces next to the station. The stuck workpiece may be scratched or deformed during subsequent pushing, or it may collide abnormally with the new copper ring, damaging the welded part, or it may intrude into the stroke space of the moving parts, causing mechanical interference. To address this issue, a copper ring welding device with pre-assembly function for slip ring manufacturing is proposed. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of incomplete welding and incomplete unloading in copper ring welding devices in the prior art, and to propose a copper ring welding device with pre-assembly function for slip ring manufacturing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A copper ring welding device with pre-assembly function for slip ring manufacturing includes a worktable, a collection groove on the worktable, a pre-assembly assembly on one side of the collection groove, a wire feeding assembly at the other end of the collection groove, a welding mechanism on the side of the pre-assembly assembly away from the wire feeding assembly, a vibrating feeding plate on the side of the pre-assembly assembly, an ejection assembly on the pre-assembly assembly, a copper ring placed in the vibrating feeding plate, and a wire in the wire feeding assembly. The pre-assembled component includes a housing with a cavity for matching copper rings inside. The bottom of the housing has an actuator push block driven by a cylinder. The housing has positioning slide rails with arc-shaped grooves for matching copper rings between them. The arc-shaped grooves have welding positioning pieces. The side of the housing facing the vibrating feeder is connected to the output end of the vibrating feeder through a feeding slide. The side of the housing facing the welding mechanism has a clamping block driven by a small cylinder. The ejection assembly includes an ejection chamber and an actuating piston cylinder. The ejection chamber is installed above the positioning slide rail. Four ejection grooves are opened on the surface of the ejection chamber facing the collection groove. An ejection slider is provided inside the ejection chamber. The actuating piston cylinder is installed on the side of the housing facing the collection groove.

[0005] Preferably, the upper surface of the execution push block is provided with a feeding push block and an ejection push block, and the top of the feeding push block is arc-shaped to match the bottom of the copper ring.

[0006] Preferably, the length of the ejector pusher block is less than that of the feeding pusher block, and the length difference between the ejector pusher block and the feeding pusher block is equal to the distance from the bottom of the arc groove to the bottom of the ejection chamber.

[0007] Preferably, the welding positioning piece is rotatably connected to the arc-shaped groove via a torsion spring and a rotating shaft. The center of the welding positioning piece is provided with a rectangular groove for the welding torch in the welding mechanism to pass through. The side of the welding positioning piece facing the clamping block is provided with a matching pressure protrusion. The initial state of the welding positioning piece is set to be horizontal.

[0008] Preferably, the ejection chamber has an air inlet on the side away from the collection tank, the air inlet is connected to the output end of the actuator piston cylinder, and the inner wall of the ejection chamber is provided with an axial guide rail and an energy storage lock plate.

[0009] Preferably, the ejector slider has an ejector piston on one side and four ejector rods matching the ejector grooves on the other side. The ejector rods are slidably connected to the ejector grooves. The outer wall of the ejector slider has protrusions matching the axial guide rails and energy storage grooves matching the energy storage lock plates.

[0010] Preferably, the actuating piston cylinder includes a piston rod, the actuating piston cylinder is connected to the air inlet through a pipe, and a return spring is sleeved on the piston rod.

[0011] Preferably, the bottom of the clamping block is provided with a groove that matches the shape of the pressure protrusion. When the small cylinder drives the clamping block to descend, the pressure protrusion enters the groove, and the groove is used to achieve lateral positioning of the welding positioning piece to prevent it from shifting during the welding process.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes the combined action of welding positioning plates, arc grooves, and clamping blocks. After the wire is fed, the clamping block, driven by a small cylinder, presses down, and the welding positioning plates rigidly clamp the copper ring and the wire, ensuring the stability of the copper ring and the wire during welding. This prevents the wire from misaligning or shaking due to arc thermal stress during welding, avoids welding defects, and improves welding quality.

[0013] 2. This invention, by setting up an ejection assembly, utilizes the synergistic effect of the actuator piston cylinder, ejection slider, and energy storage lock plate. The actuator push block pushes the ejection piston cylinder rod while pushing out the copper ring, and the ejection slider is driven by air pressure. At this time, the energy storage lock plate temporarily locks the ejection slider to accumulate energy. When the pressure exceeds the set threshold, the energy storage lock plate releases the ejection slider, and the accumulated energy instantly drives the ejection slider to eject at high speed, ejecting the welded copper ring and wire into the collection tank, thus preventing the workpiece from accumulating at the welding station.

[0014] 3. By utilizing the length difference between the feeding pusher block and the ejector pusher block, the present invention enables the actuator pusher block to sequentially complete three actions in one stroke: feeding the copper ring, pushing it to the ejector station, and triggering ejection energy storage. This achieves efficient connection and automated cycle of pre-assembly, welding, and unloading processes, thereby improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention; Figure 2 This is a schematic diagram of the back structure of the pre-assembled component in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention. Figure 3 This is a front view of the pre-assembly component in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention. Figure 4 This is a schematic diagram of the pre-assembly component and the ejection component in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention. Figure 5 This is a cross-sectional view of the internal structure of the pre-assembled component in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention. Figure 6 This is a cross-sectional view of the internal structure of the ejection assembly in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention; Figure 7 This is a cross-sectional view of the internal structure of the housing in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention; Figure 8This is a schematic diagram of the ejector slider in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention; Figure 9 This is a schematic diagram of the welding positioning piece in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention; Figure 10 This is a schematic diagram of the clamping block in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention; Figure 11 This is a schematic diagram of the pusher block in a copper ring welding device with pre-assembly function for slip ring manufacturing proposed in this invention.

[0016] In the diagram: 1. Workbench; 2. Collection trough; 3. Wire feeding assembly; 4. Welding mechanism; 5. Vibrating feeder; 6. Housing; 7. Ejection chute; 8. Positioning slide rail; 9. Welding positioning plate; 901. Pressure protrusion; 10. Clamping block; 11. Ejection chamber; 12. Actuating piston cylinder; 1201. Piston rod; 13. Ejection slider; 14. Actuating push block; 1401. Feeding push block; 1402. Ejector push block; 15. Air inlet; 16. Axial guide rail; 17. Energy storage lock plate; 18. Ejection piston; 19. Ejector rod; 20. Energy storage tank; 21. Slot. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Example, refer to Figures 1 to 11 A copper ring welding device with pre-assembly function for slip ring manufacturing includes a worktable 1, a collection groove 2 on the worktable 1, a pre-assembly component on one side of the collection groove 2, a wire feeding assembly 3 at the other end of the collection groove 2, a welding mechanism 4 on the side of the pre-assembly component away from the wire feeding assembly 3, a vibrating feeding plate 5 on the side of the pre-assembly component, an ejection component on the pre-assembly component, a copper ring placed in the vibrating feeding plate 5, and a wire in the wire feeding assembly 3. The pre-assembled component includes a housing 6, which has a cavity for matching a copper ring. The bottom of the housing 6 has an actuator push block 14 driven by a cylinder. The housing 6 has a positioning slide rail 8, and an arc-shaped groove for matching the copper ring is provided between the positioning slide rails 8. A welding positioning piece 9 is provided on the arc-shaped groove for clamping and positioning the copper ring and the wire before welding. The side of the housing 6 facing the vibrating feed plate 5 is connected to the output end of the vibrating feed plate 5 through a feeding slide. The side of the housing 6 facing the welding mechanism 4 has a clamping block 10 driven by a small cylinder for final fixing of the copper ring before welding to ensure the stability of the welding process. The ejection assembly includes an ejection chamber 11 and an actuating piston cylinder 12. The ejection chamber 11 is installed above the positioning slide rail 8 and can directly eject the welded assembly into the collection area in the collection tank 2. The ejection chamber 11 has four ejection grooves 7 on its surface facing the collection tank 2. The ejection chamber 11 is equipped with an ejection slider 13. The actuating piston cylinder 12 is installed on the side of the housing 6 facing the collection tank 2.

[0021] It should be noted that the above-mentioned wire feeding assembly 3, welding mechanism 4 and vibrating feeder 5 are all existing technologies, so they will not be described in detail.

[0022] Furthermore, the upper surface of the pusher block 14 is provided with a feeding pusher block 1401 and an ejector pusher block 1402. The top of the feeding pusher block 1401 is arc-shaped to match the bottom of the copper ring, which can prevent the copper ring from tilting or shifting during the pushing process. The length of the ejector pusher block 1402 is less than that of the feeding pusher block 1401. The length difference between the ejector pusher block 1402 and the feeding pusher block 1401 is equal to the distance from the bottom of the arc-shaped groove to the bottom of the ejection chamber 11. The further advantage of the above is that, by using the length difference between the feeding pusher block 1401 and the ejector pusher block 1402, the actuator pusher block 14 can complete three actions in the same stroke. First, the longer feeding pusher block 1401 pushes the copper ring to the welding station. After the welding is completed, the feeding pusher block 1401 then pushes the copper ring to the ejection station. During this process, the ejector pusher block 1402 pushes the piston rod 1201 to retract, thus pressurizing the ejector slider 13.

[0023] Furthermore, the welding positioning piece 9 is rotatably connected to the arc-shaped groove through a torsion spring and a rotating shaft. The center of the welding positioning piece 9 is provided with a rectangular groove for the welding torch in the welding mechanism 4 to pass through. The side of the welding positioning piece 9 facing the clamping block 10 is provided with a matching pressure protrusion 901. The initial state of the welding positioning piece 9 is set to the horizontal. It should be noted that when the pusher block 14 pushes the copper ring to the ejection station, the welding positioning plate 9 rotates to a vertical position through the rotating shaft under the pushing force of the copper ring, allowing the copper ring to pass through. After the copper ring passes through, the welding positioning plate 9 automatically resets through the restoring force (torque) provided by the torsion spring. This is the action process of the welding positioning plate 9, which will not be described in detail below.

[0024] Furthermore, the ejection chamber 11 is provided with an air inlet 15 on the side away from the collection tank 2. The air inlet 15 is connected to the output end of the actuator piston cylinder 12. The inner wall of the ejection chamber 11 is provided with an axial guide rail 16 and an energy storage lock plate 17. The axial guide rail 16 is used to prevent the ejection slider 13 from rotating during the movement. The energy storage lock plate 17 can apply a certain locking force to the ejection slider 13 to store elastic potential energy. Furthermore, a ejector piston 18 is provided on one side of the ejector slider 13, and four ejector rods 19 matching the ejector grooves 7 are provided on the other side of the ejector slider 13 to ensure that the thrust is applied evenly to the workpiece. The ejector rods 19 are slidably connected to the ejector grooves 7. The outer wall of the ejector slider 13 is provided with a protrusion matching the axial guide rail 16 and an energy storage groove 20 matching the energy storage lock plate 17. The further advantage of the above is that when the air pressure input by the piston cylinder 12 pushes the ejector piston 18, the ejector slider 13 will not move immediately due to the locking of the energy storage tank 20 and the energy storage lock plate 17, thus achieving the energy storage function. When the air pressure is greater than the locking force between the ejector slider 13 and the energy storage tank 20, the stored energy will be released instantly and push the ejector slider 13 to pop out at high speed, thereby driving the ejector rod 19 to complete the ejection action, realizing the control of the unloading force, and thus preventing the material from accumulating in the welding area.

[0025] Furthermore, the piston cylinder 12 includes a piston rod 1201. The piston cylinder 12 is connected to the air inlet 15 through a pipe. A return spring is sleeved on the piston rod 1201. When the ejection process is completed, the piston rod 1201 can automatically retract using the elastic force of the return spring, so that the ejection assembly returns to the standby state and is ready for the next working cycle. Furthermore, the bottom of the clamping block 10 is provided with a slot 21 that matches the shape of the pressure protrusion 901. When the small cylinder drives the clamping block 10 to descend, the pressure protrusion 901 enters the slot 21. The slot 21 is used to achieve lateral positioning of the welding positioning piece 9 and prevent it from shifting during the welding process. When the present invention is used, the vibrating feeding plate 5 transports the copper ring through the feeding slide to the housing 6 of the pre-assembled component. Then, the cylinder drives the pusher block 14 to move. The feeding pusher block 1401 uses its arc-shaped top to smoothly push the copper ring into the arc-shaped groove (welding station) between the positioning slide rails 8. During this process, after the top of the copper ring pushes away the welding positioning piece 9, the welding positioning piece 9 resets and contacts the inner wall of the bottom of the copper ring. After the wire feeding assembly 3 strips the wire and delivers it to the welding station, the cylinder drives the clamping block 10 to descend and clamp the pressure protrusion 901 through the slot 21. The pressure of the clamping block 10 prevents the welding positioning piece 9 from flipping, and the shape of the slot 21 prevents the welding positioning piece 9 from shifting. In this state, the welding positioning piece 9 will clamp the copper ring and the wire, realizing the pre-assembly of the copper ring and the wire, ensuring that the two are in the right position before welding, and avoiding welding deviation caused by misalignment. Next, the welding mechanism 4 is started, and the welding torch welds the copper ring through the rectangular groove in the center of the welding positioning plate 9. After the welding torch ignites the electric arc, the high-temperature electric arc instantly melts the welding surface of the copper ring and the metal layer of the wire, forming a molten pool. At this time, due to the continuous rigid clamping force provided by the welding positioning plate 9 and the clamping block 10, the copper ring and the wire remain relatively stationary during the melting process, preventing the wire from being misaligned due to the blowing force of the protective gas or the thermal stress of the electric arc, thereby ensuring the contact stability of the welding point. After welding is completed, the clamping block 10 rises to release the copper ring, and the pusher block 14 continues to rise. The copper ring is pushed from the arc groove to the ejection station below the ejection chamber 11 by the feeding pusher block 1401. During this process, because the ejector pusher block 1402 is relatively short, it will push the piston rod 1201 of the actuator piston cylinder 12 to retract when the copper ring enters the ejection station, compressing the reset spring and storing energy for the ejection assembly, so that the actuator piston cylinder 12 inputs air pressure to the air inlet 15 of the ejection chamber 11 through the pipeline. This air pressure will push the ejection piston 18 of the ejection slider 13, but the energy storage lock plate 17 locks the energy storage groove 20 on the outer wall of the ejection slider 13, so that the ejection slider 13 does not move along the axial guide rail 16 temporarily to accumulate elastic potential energy. When the copper ring arrives at the ejection station, the air pressure exceeds the locking force of the energy storage lock plate 17, causing the energy storage lock plate 17 to deform under the thrust of the energy storage tank 20 and release the ejection slider 13. This causes the ejection slider 13 to pop out at high speed, driving the four ejection rods 19 to move synchronously along the ejection chute 7, and evenly ejecting the welded components into the collection area in the collection tank 2, thus avoiding material accumulation. After ejection, the push block 14 is reset, the air pressure of the piston cylinder 12 is released, and the piston rod 1201 automatically extends and resets under the action of the reset spring, so that a negative pressure is formed in the ejection chamber 11, and the ejection slider 13 is reset by the negative pressure. At the same time, the welding positioning piece 9 is rotated and reset to the lateral state by the torsion of the torsion spring. By repeating the above steps, continuous pre-assembly, welding, and ejection collection of the copper ring can be achieved.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A copper ring welding apparatus with pre-assembly function for slip ring manufacturing, comprising a worktable (1), characterized in that, The workbench (1) is provided with a collection trough (2), a pre-assembly assembly is provided at one end of the collection trough (2), a wire feeding assembly (3) is provided at the other end of the collection trough (2), a welding mechanism (4) is provided on the side of the pre-assembly assembly away from the wire feeding assembly (3), a vibrating feeding plate (5) is provided on one side of the pre-assembly assembly, an ejection assembly is provided on the pre-assembly assembly, a copper ring is placed in the vibrating feeding plate (5), and a wire is provided in the wire feeding assembly (3); The pre-assembled component includes a housing (6), which has a cavity for matching copper rings. The bottom of the housing (6) has an execution push block (14) driven by a cylinder. The housing (6) has a positioning slide rail (8), and the positioning slide rail (8) has an arc groove for matching copper rings between the two rails. The arc groove has a welding positioning piece (9). The side of the housing (6) facing the vibrating feed plate (5) is connected to the output end of the vibrating feed plate (5) through a feeding slide. The side of the housing (6) facing the welding mechanism (4) has a clamping block (10) driven by a small cylinder. The ejection assembly includes an ejection chamber (11) and an actuating piston cylinder (12). The ejection chamber (11) is installed above the positioning slide rail (8). The surface of the ejection chamber (11) facing the collection groove (2) has four ejection grooves (7). The ejection chamber (11) is provided with an ejection slider (13). The actuating piston cylinder (12) is installed on the side of the housing (6) facing the collection groove (2).

2. The copper ring welding device with pre-assembly function for slip ring manufacturing according to claim 1, characterized in that, The upper surface of the execution push block (14) is provided with a feeding push block (1401) and an ejection push block (1402). The top of the feeding push block (1401) is arc-shaped to match the bottom of the copper ring.

3. A copper ring welding device with pre-assembly function for slip ring manufacturing according to claim 2, characterized in that, The length of the ejector pusher block (1402) is less than that of the feeding pusher block (1401), and the length difference between the ejector pusher block (1402) and the feeding pusher block (1401) is equal to the distance from the bottom of the arc groove to the bottom of the ejection chamber (11).

4. A copper ring welding device with pre-assembly function for slip ring manufacturing according to claim 1, characterized in that, The welding positioning piece (9) is rotatably connected to the arc groove through a torsion spring and a rotating shaft. The center of the welding positioning piece (9) is provided with a rectangular groove for the welding gun in the welding mechanism (4) to pass through. The side of the welding positioning piece (9) facing the pressing block (10) is provided with a matching pressure protrusion (901). The initial state of the welding positioning piece (9) is set to horizontal.

5. A copper ring welding device with pre-assembly function for slip ring manufacturing according to claim 1, characterized in that, The ejection chamber (11) has an air inlet (15) on the side away from the collection tank (2). The air inlet (15) is connected to the output end of the actuator piston cylinder (12). The inner wall of the ejection chamber (11) is provided with an axial guide rail (16) and an energy storage lock plate (17).

6. A copper ring welding device with pre-assembly function for slip ring manufacturing according to claim 5, characterized in that, The ejector slider (13) is provided with an ejector piston (18) on one side and four ejector rods (19) matching the ejector grooves (7) on the other side. The ejector rods (19) are slidably connected to the ejector grooves (7). The outer wall of the ejector slider (13) is provided with a protrusion matching the axial guide rail (16) and an energy storage groove (20) matching the energy storage lock plate (17).

7. A copper ring welding device with pre-assembly function for slip ring manufacturing according to claim 1, characterized in that, The actuator piston cylinder (12) includes a piston rod (1201), the actuator piston cylinder (12) is connected to the air inlet (15) through a pipe, and a return spring is sleeved on the piston rod (1201).

8. A copper ring welding device with pre-assembly function for slip ring manufacturing according to claim 4, characterized in that, The bottom of the pressing block (10) is provided with a slot (21) that matches the shape of the pressure protrusion (901). When the small cylinder drives the pressing block (10) to descend, the pressure protrusion (901) enters the slot (21). The slot (21) is used to achieve lateral positioning of the welding positioning piece (9) to prevent it from shifting during the welding process.

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