A copper rod grain boundary strengthening heat treatment apparatus

Abstract

The utility model relates to copper pole processing technical field especially relates to a kind of copper pole grain boundary strengthening heat treatment device, including annealing furnace, and the import and export of annealing furnace are evenly provided with positioning mechanism;Positioning mechanism includes the fixed ring concentric with import and export;Fixed ring concentric rotation connection has driving ring, and driving ring is rotationally connected with at least three driving blocks in circumferential array shape;Rotational connection has swing arm corresponding one-to-one with driving block on fixed ring, and swing arm middle part is slidably connected with driving block, and swing arm is provided with ball towards import or export one end;Further include the driving mechanism for driving driving ring rotation;Its simple structure, using the positioning mechanism of adjustable inner diameter size to replace the disc of existing technology with unchangeable inner diameter, can quickly adjust the size of inner diameter, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of copper rod processing technology, and in particular to a copper rod grain boundary strengthening heat treatment device. Background Technology

[0002] In the field of copper processing, grain boundary strengthening heat treatment is a key process to improve the mechanical properties and structural stability of copper rods. Its core is to achieve grain refinement, twin proliferation and grain boundary structure optimization of copper rods through precise temperature control, heat preservation and cooling processes in the annealing furnace, thereby enhancing the tensile strength and fatigue resistance of copper rods and maintaining excellent electrical conductivity.

[0003] To ensure uniform and stable annealing results, the copper rod must remain centered within the annealing furnace at all times. This prevents uneven heating caused by rod misalignment, which could negatively impact grain boundary strengthening quality. In existing technologies, discs with through-holes matching the diameter of the copper rod are typically installed on the outer walls of both ends of the annealing furnace. The copper rod passes through these through-holes and is thus positioned and limited. The discs are then fixed to both ends of the annealing furnace using multiple screws, thereby achieving centered positioning of the copper rod during the annealing process.

[0004] However, the existing limiting support assembly has obvious limitations: its central through-hole diameter is fixed and can only accommodate round copper rods of a single diameter. When grain boundary strengthening heat treatment is required for copper rods of different diameters, operators must use tools such as screwdrivers to disassemble the original disc and replace it with a disc whose central through-hole diameter matches the new copper rod. The entire replacement process is cumbersome and affects production efficiency.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] This invention provides a copper rod grain boundary strengthening heat treatment device, which can effectively solve the problems in the background technology. It has a simple structure and uses a positioning mechanism that can adjust the inner diameter to replace the disk with a fixed inner diameter in the prior art. This allows for rapid adjustment of the inner diameter and improves production efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A copper rod grain boundary strengthening heat treatment apparatus includes an annealing furnace, with positioning mechanisms provided at both the inlet and outlet of the annealing furnace; the positioning mechanisms include fixing rings concentric with the inlet and outlet. The fixed ring is concentrically connected to the driving ring, and the driving ring is rotatably connected to at least three driving blocks in a circular array. A swing arm corresponding to the driving block is rotatably connected to the fixed ring. The middle part of the swing arm is slidably connected to the driving block. A ball is provided at the end of the swing arm facing the inlet or outlet. It also includes a drive mechanism for driving the rotating ring.

[0008] Furthermore, the drive mechanism includes: The connecting block is fixedly connected to the driving ring; The bearing housing is rotatably connected to the retaining ring via a pin. The threaded rod is rotatably connected to the bearing housing and threadedly connected to the connecting block. A handwheel is provided at one end of the threaded rod.

[0009] Furthermore, the drive mechanism also includes nuts that are threadedly connected to the threaded rod, with nuts distributed on both sides of the connecting block.

[0010] Furthermore, the other end of the threaded rod is provided with an anti-disengagement part with a cross-section larger than that of the threaded rod.

[0011] Furthermore, the drive mechanism also includes: Angle plate, which is fixed on a retaining ring and fitted around a pin; The pointer has one end fixedly connected to the pin, and the other end faces the angle dial.

[0012] Furthermore, a circular mounting plate is formed by extending outward from the end of the swing arm toward the inlet or outlet, and the mounting plate is partially provided with multiple grooves for placing balls.

[0013] Furthermore, a small portion of the balls are located within the groove, and the mounting plate is detachably fitted with a cover. The cover plate has an arc-shaped notch for limiting the ball bearing, and the end of the ball bearing protrudes from the cover plate through the arc-shaped notch.

[0014] Furthermore, the cover plate comprises at least two sub-parts.

[0015] The technical solution of this utility model can achieve the following technical effects: This device does not require disassembly or replacement of parts. By driving the driving ring, driving block and swing arm through the driving mechanism, the inner diameter of the positioning mechanism can be flexibly adjusted, and it can quickly adapt to copper rods of different diameters. The operation is simple and saves time, greatly improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the heat treatment device for strengthening grain boundaries of copper rods; Figure 2 for Figure 1 A schematic diagram of the positioning mechanism from this perspective; Figure 3 This is a top view of the positioning mechanism; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a front view of the positioning mechanism; Figure 6 Cross-sectional view of the ball bearings, mounting plate, and rocker arm; Reference numerals in the attached drawings: 1. Annealing furnace; 2. Positioning mechanism; 21. Drive ring; 22. Rotating shaft one; 23. Drive block; 24. Swing arm; 25. Rotating shaft two; 26. Ball bearing; 27. Drive mechanism; 271. Connecting block; 272. Bearing seat; 273. Pin; 274. Threaded rod; 275. Handwheel; 276. Nut; 277. Anti-detachment part; 278. Angle plate; 279. Pointer; 28. Mounting plate; 29. ​​Cover plate; 210. Fixing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] This application provides a copper rod grain boundary strengthening heat treatment device, including an annealing furnace 1. The annealing furnace 1 has a cavity inside, and from the inlet to the outlet, it consists of a preheating furnace, a heating furnace, a holding furnace, a slow cooling furnace, and a cooling furnace. The copper rod enters the annealing furnace 1 from the inlet and leaves the annealing furnace 1 from the outlet. Positioning mechanisms 2 are installed at both the inlet and outlet of annealing furnace 1; refer to Figures 1-5 The positioning mechanism 2 includes a fixing ring 210 concentric with the inlet and outlet. More specifically, the fixing ring 210 is a hollow cylinder and is fixed on the outer wall of the annealing furnace 1. It passes through the positioning mechanism 2 before the copper rod enters the annealing furnace 1 or after it leaves the annealing furnace 1. The fixed ring 210 is concentrically connected to the driving ring 21. More specifically, the driving ring 21 rotates at the center of the fixed ring 210 via a bearing. The driving ring 21 is also hollow cylindrical in shape to facilitate the passage of the copper rod. Reference Figure 3 and Figure 4 The driving ring 21 is rotatably connected to at least three driving blocks 23 in a circumferential array. More specifically, in this embodiment, a rotating shaft 22 is fixed on the back of the driving block 23, and the rotating shaft 22 is rotatably connected to the edge area of ​​the driving ring 21. A swing arm 24 corresponding to the driving block 23 is rotatably connected to the fixed ring 210. More specifically, a second rotating shaft 25 is fixed to the fixed ring 210, and the swing arm 24 is rotatably connected to the second rotating shaft 25, so that the entire swing arm 24 can rotate around the second rotating shaft 25. Reference Figure 2 , Figure 3 and Figure 5 The middle part of the swing arm 24 is slidably connected to the driving block 23. The end of the swing arm 24 facing the inlet or outlet is provided with a ball 26. More specifically, the driving block 23 is fitted on the swing arm 24. When the driving ring 21 rotates, it causes the driving block 23 to revolve. Since the driving block 23 is fitted on the swing arm 24, when the driving block 23 revolves, it will push the swing arm 24 to rotate around the second rotating shaft 25, thereby adjusting the distance between the ball 26 and the center of the fixed ring 210, so as to achieve the purpose of adjustable inner diameter. During this process, the angle of the driving block 23 changes adaptively, and the relative position of the driving block 23 and the swing arm 24 changes adaptively. It also includes a drive mechanism 27 for driving the rotating ring 21; The specific process of this device is as follows: When it is necessary to center and limit the copper rods of different diameters, the drive mechanism 27 starts and drives the drive ring 21 in the positioning mechanism 2 at the inlet and outlet of the annealing furnace 1 to rotate concentrically around the fixed ring 210. The drive block 23 rotates synchronously with the drive ring 21. Since the drive block 23 is slidably connected to the middle of the swing arm 24 and the swing arm 24 is rotatably connected to the fixed ring 210 through the second rotating shaft 25, the rotating drive block 23 will push the swing arm 24 to rotate around the second rotating shaft 25, thereby adjusting the distance between the ball 26 of the swing arm 24 facing the inlet or outlet end and the center of the fixed ring 210, realizing the flexible adjustment of the inner diameter of the positioning mechanism 2. After being adjusted to match the diameter of the copper rod to be processed, the copper rod passes through the center of the positioning mechanism 2 and is limited and supported by the ball 26, always remaining in the center position inside the annealing furnace 1, meeting the grain boundary strengthening heat treatment requirements of copper rods of different specifications. When the ball 26 supports the copper rod, it will adhere to the surface of the copper rod in a rolling contact manner, reducing damage to it.

[0021] As a preferred embodiment of the above, refer to Figures 2-5 The drive mechanism 27 includes: Connecting block 271 is fixedly connected to driving ring 21; The bearing housing 272 is rotatably connected to the retaining ring 210 via a pin 273. More specifically, the bearing housing 272 and the pin 273 can rotate about the axis of the pin 273 to accommodate the rotation of the connecting block 271. A threaded rod 274 is rotatably connected to a bearing housing 272, and a threaded rod 274 is threadedly connected to a connecting block 271. A handwheel 275 is provided at one end of the threaded rod 274. The operation of the drive mechanism 27 of this device is as follows: Rotating the handwheel 275 at one end of the threaded rod 274 causes the threaded rod 274 to rotate relative to the bearing seat 272. Because the threaded rod 274 is threadedly engaged with the connecting block 271 fixed to the drive ring 21, the connecting block 271 will rotate with the threaded rod 274 to generate linear motion and drive the drive ring 21 to rotate concentrically around the fixed ring 210. At this time, the pin 273 and the bearing seat 272 rotate around their axis to adapt to the angular offset of the threaded rod 274 caused by the movement of the connecting block 271, thus preventing the threaded rod 274 from jamming. The revolving drive block 23 pushes the swing arm 24 to rotate around the rotating shaft 25, adjusting the distance between the ball 26 and the center of the fixed ring 210 to adapt to the diameter of the copper rod. Through the gradual nature of the threaded transmission, the continuous stepless adjustment of the inner diameter of the positioning mechanism 2 is achieved.

[0022] As a preferred embodiment of the above, refer to Figure 2 The drive mechanism 27 also includes a nut 276 that is threadedly connected to the threaded rod 274, and nuts 276 are distributed on both sides of the connecting block 271; The nuts 276 on both sides of the connecting block 271 are threaded together with the threaded rod 274 to form a double nut 276 locking structure. After adjusting the distance between the ball 26 and the center of the fixing ring 210 by threading, tightening the nuts 276 on both sides so that the nuts 276 contact the connecting block 271 can firmly lock the relative position of the threaded rod 274 and the connecting block 271, effectively resisting the influence of external forces caused by the vibration of the copper rod conveyor or the operation of the equipment.

[0023] As a preferred embodiment of the above, refer to Figure 2 The other end of the threaded rod 274 is provided with an anti-detachment part 277 with a cross-section larger than the threaded rod 274. The anti-detachment part 277 is an object fixedly connected to the threaded rod 274. Since the cross-section is larger than the threaded rod 274, the anti-detachment part 277 will prevent the connecting block 271 from detaching from the threaded rod 274, thus preventing the connecting block 271 from moving excessively.

[0024] As a preferred embodiment of the above, refer to Figures 2-4 The drive mechanism 27 also includes: Angle plate 278 is fixed on retaining ring 210 and fitted around pin 273; Pointer 279, one end of which is fixedly connected to pin 273, and the other end faces angle dial 278; When the operator adjusts the positioning mechanisms 2 on both sides of the annealing furnace 1, the adjustment angle of the positioning mechanisms 2 on both sides can be quickly calibrated to a consistent state by observing the specific scale of the angle dial 278 pointed to by the pointer 279.

[0025] As a preferred embodiment of the above, refer to Figures 2-5 A circular mounting plate 28 extends outward from the end of the swing arm 24 facing the inlet or outlet. More specifically, a portion of the mounting plate 28 is connected to the swing arm 24, and the outer wall of the mounting plate 28 protrudes further from the swing arm 24 to prevent the copper rod from contacting the swing arm 24 and to increase the applicable diameter of the copper rod. The mounting plate 28 is partially provided with multiple grooves for placing the balls 26, and these grooves are distributed in a circumferential array. The grooves can provide a stable mounting and positioning space for the balls 26, so that the balls 26 are evenly distributed along the circumference, thereby improving the stability of the rolling support for the copper rod.

[0026] As a preferred embodiment of the above, refer to Figure 6 A small portion of the ball bearing 26 is located within the groove. The mounting plate 28 is detachably fitted with a cover plate 29. More specifically, in this embodiment, the cover plate 29 is fixed with screws. Any structure that can provide fixation can be implemented. The cover plate 29 has an arc-shaped notch for limiting the ball 26. The end of the ball 26 protrudes from the cover plate 29 through the arc-shaped notch. More specifically, the cross-section of the arc-shaped notch is arc-shaped. The cover plate 29 can cover most of the ball 26 so that the ball 26 will not fall out of the groove. The cover plate 29 is detachable and has an arc notch, which can not only cooperate with the groove to limit the ball 26, allowing only the end of the ball 26 to protrude from the cover plate 29 to ensure the rolling support effect and prevent the ball 26 from falling off the mounting plate 28, but also facilitate the subsequent disassembly and replacement of the ball 26.

[0027] As a preferred embodiment of the above, refer to Figure 2 The cover plate 29 includes at least two sub-parts. The above configuration allows the ball bearing 26 to be replaced without disassembling the whole body. Only a single sub-part needs to be disassembled for operation. The remaining sub-parts can still cooperate with the groove to limit the ball bearing 26, effectively preventing the ball bearing 26 from falling off during the replacement process.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat treatment apparatus for strengthening grain boundaries of copper rods, comprising an annealing furnace (1), wherein positioning mechanisms (2) are provided at both the inlet and outlet of the annealing furnace (1); characterized in that, The positioning mechanism (2) includes a fixed ring (210) concentric with the inlet and outlet; The fixed ring (210) is concentrically rotatably connected to the driving ring (21), and the driving ring (21) is rotatably connected to at least three driving blocks (23) in a circular array. A swing arm (24) corresponding to the driving block (23) is rotatably connected to the fixed ring (210). The middle part of the swing arm (24) is slidably connected to the driving block (23). A ball bearing (26) is provided at the end of the swing arm (24) facing the inlet or outlet. It also includes a drive mechanism (27) for driving the drive ring (21) to rotate.

2. The copper rod grain boundary strengthening heat treatment apparatus according to claim 1, characterized in that, The drive mechanism (27) includes: The connecting block (271) is fixedly connected to the driving ring (21); The bearing housing (272) is rotatably connected to the retaining ring (210) via a pin (273); A threaded rod (274) is rotatably connected to the bearing seat (272), and the threaded rod (274) is threadedly connected to the connecting block (271). A handwheel (275) is provided at one end of the threaded rod (274).

3. The copper rod grain boundary strengthening heat treatment apparatus according to claim 2, characterized in that, The drive mechanism (27) also includes a nut (276) that is threadedly connected to the threaded rod (274), and nuts (276) are distributed on both sides of the connecting block (271).

4. The copper rod grain boundary strengthening heat treatment apparatus according to claim 2, characterized in that, The other end of the threaded rod (274) is provided with an anti-detachment part (277) with a cross-section larger than that of the threaded rod (274).

5. The copper rod grain boundary strengthening heat treatment apparatus according to claim 2, characterized in that, The drive mechanism (27) further includes: Angle disc (278) is fixed to the retaining ring (210) and fitted around the pin (273); The pointer (279) is fixedly connected at one end to the pin (273) and at the other end to the angle disk (278).

6. The copper rod grain boundary strengthening heat treatment apparatus according to claim 1, characterized in that, A circular mounting plate (28) is formed by extending outward from the end of the swing arm (24) toward the inlet or outlet. The mounting plate (28) is partially provided with a plurality of grooves for placing the ball (26).

7. The copper rod grain boundary strengthening heat treatment apparatus according to claim 6, characterized in that, A small portion of the ball (26) is located within the groove, and the mounting plate (28) is detachably fitted with a cover plate (29). The cover plate (29) has an arc-shaped notch for limiting the ball (26), and the end of the ball (26) protrudes from the cover plate (29) through the arc-shaped notch.

8. The copper rod grain boundary strengthening heat treatment apparatus according to claim 7, characterized in that, The cover plate (29) comprises at least two sub-parts.

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