Wire limiting device and annealing furnace
By designing a detachable and connected wire limiting mechanism, the problem of overall disassembly and replacement of wire size changes in the prior art is solved, and rapid replacement and efficient operation are achieved, wire scratches are reduced, and wire quality is ensured.
Patent Information
- Application Number
- CN202421725685.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-19
AI Technical Summary
When the wire size changes, existing wire limiting devices need to be disassembled and replaced as a whole, and it is inconvenient to operate in high temperature environments.
A wire limiting device is designed, which includes a base, a wire limiting mechanism and a limiting block. The wire limiting mechanism is detachably connected through a sliding groove structure, and only the limiting mechanism needs to be replaced can be adapted to different wire sizes.
It realizes rapid replacement and disassembly of wire limiting devices, avoids inconvenient operation in high temperature environments, improves working efficiency, reduces scratches of wires, and ensures wire quality.
Smart Images
Figure CN222826141U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric wire production, and more specifically, to an electric wire limiting device and an annealing furnace. Background Art
[0002] During the annealing process of the wire, the annealing furnace needs to be filled with protective gas or protective media such as water vapor to prevent the wire from being oxidized. Therefore, semi-sealed limit devices are often required at both ends of the annealing furnace. The limit devices have two functions. One is to seal the protective medium in the annealing tube, and the other is to limit the wire to prevent the wire from swinging freely in the annealing tube, causing friction and scratches between the wire and the annealing tube.
[0003] The limiting devices used in the prior art are mostly simple methods, such as directly putting limiting rings on both ends of the annealing tube, or directly processing a straight-shaped limiting hole on the limiting device, or using a hinge to connect the two halves of the limiting ring, so as to achieve the function of limiting and sealing. The above methods all have the following disadvantages: when the size of the wire changes, the limiting device needs to be disassembled and replaced as a whole, but since both ends of the annealing tube are in a high-temperature environment, it is inconvenient to disassemble and assemble the limiting device and seal, which is very difficult. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model innovatively provides a wire limiting device and an annealing furnace, which can select a wire limiting mechanism with a wire limiting hole of a corresponding size according to the size of the wire, and only the wire limiting mechanism needs to be replaced, without the need to remove the entire wire limiting device from the annealing tube, and the wire limiting mechanism is convenient and quick to disassemble, and can be adjusted in time according to the sudden change of wire specifications during processing, thereby improving operating efficiency; at the same time, the size of the wire limiting hole matches the wire, thereby preventing the wire from swinging freely in the annealing tube and the wire limiting mechanism, reducing scratches on the wire, and ensuring the quality of the wire.
[0005] In order to achieve the above technical objectives, the utility model discloses a wire limiting device in the first aspect, including a base, a wire limiting mechanism and a limiting block.
[0006] The base is provided with a protective medium through hole.
[0007] The base is provided with a slide groove which penetrates the base from left to right, the groove direction of the slide groove is perpendicular to the axial direction of the protective medium through hole, and the slide groove is connected with the protective medium through hole.
[0008] The wire limiting mechanism comprises a left half limiting mechanism and a right half limiting mechanism, a left limiting groove is provided on the right side edge of the left half limiting mechanism, a right limiting groove is provided on the left side edge of the right half limiting mechanism, the left half limiting mechanism and the right half limiting mechanism are arranged in the slide groove, the left limiting groove and the right limiting groove are arranged opposite to each other and spliced into a wire limiting hole, the wire limiting hole is connected with the protective medium through hole, and the left half limiting mechanism and the right half limiting mechanism are detachably connected with the base by sliding along the slide groove,
[0009] The limit blocks are provided on both sides of the left and right sides of the wire limiting mechanism, and the limit blocks are rotatably connected to the base. The limit blocks are in a first state where the side of the wire limiting mechanism blocks the sliding of the half-limiting mechanism on the same side or in a second state where the half-limiting mechanism on the same side is released through rotation.
[0010] Furthermore, the limiting block is also movably connected to the base, and the limiting block moves in a direction approaching or away from the wire limiting mechanism.
[0011] Furthermore, limiting grooves are respectively opened at the two ends of the base corresponding to the slide groove, the groove direction of the limiting groove is the same as the groove direction of the slide groove, and a fixed axis perpendicular to the groove direction of the limiting groove is fixed in the limiting groove, and the limiting block rotates around the fixed axis to realize switching between the first state and the second state.
[0012] Furthermore, a connecting shaft is vertically sleeved on the fixed shaft and the connecting shaft rotates around the fixed shaft, an external thread is provided on the connecting shaft, and the limit block is threadedly connected to the connecting shaft.
[0013] Furthermore, positioning bosses are provided on both side walls of the slide groove of the base at positions corresponding to the center of the protective medium through hole, and the right end portion of the left half limiting mechanism and the left end portion of the right half limiting mechanism are provided with positioning structures matching the positioning bosses, and the positioning structures are positioning grooves or positioning slopes, and the positioning bosses and the positioning structures cooperate to position the center of the wire limiting hole on the central axis of the protective medium through hole.
[0014] Further, the left half-limiting mechanism comprises a left half-limiting flange plate and a left fixed plate, the left limiting groove is arranged on the right side edge of the left half-limiting flange plate, and the left half-limiting flange plate is fixed on the left fixed plate;
[0015] The right half-limiting mechanism comprises a right half-limiting flange plate and a right fixed plate, the right limiting groove is arranged on the left edge of the right half-limiting flange plate, and the right half-limiting flange plate is fixed on the right fixed plate.
[0016] Furthermore, the left half limiting flange plate and the right half limiting flange plate are both ceramic plates.
[0017] Furthermore, a pipe joint is fixed on the base, and an inner cavity of the pipe joint is communicated with the protective medium through hole.
[0018] Furthermore, the base includes a top plate and a bottom plate, the protective medium through hole is opened on the top plate, the lower surface of the top plate is opened with a groove opening facing downward, the bottom plate is detachably connected to the bottom of the top plate, and the bottom plate closes part or all of the opening of the groove to form the slide groove.
[0019] To achieve the above technical objectives, the second aspect of the utility model discloses an annealing furnace, including the wire limiting device described in the first aspect, the base is sealed and connected to the annealing tube of the annealing furnace, and the protective medium through hole is connected to the annealing tube.
[0020] The beneficial effects of the utility model are:
[0021] The wire limiting device of the utility model can select a wire limiting mechanism with a wire limiting hole of a corresponding size according to the size of the wire, and only the wire limiting mechanism needs to be replaced without removing the entire wire limiting device from the annealing tube. Moreover, the wire limiting mechanism is convenient and quick to disassemble, and timely adjustment can be made according to the sudden change of wire specifications during processing, thereby improving the working efficiency. At the same time, the size of the wire limiting hole matches the wire, thereby preventing the wire from swinging randomly in the annealing tube and the wire limiting mechanism, reducing scratches on the wire, and ensuring the quality of the wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a three-dimensional schematic diagram of a wire limiting device according to an embodiment of the utility model.
[0023] Figure 2 It is a front schematic diagram of the top plate of an embodiment of the utility model.
[0024] Figure 3 It is a bottom schematic diagram of the top plate of an embodiment of the utility model.
[0025] Figure 4 It is a bottom view of the electric wire limiting device according to an embodiment of the utility model.
[0026] Figure 5 yes Figure 4 AA section view.
[0027] Figure 6 yes Figure 4 BB section view.
[0028] Figure 7 It is a schematic diagram of the connection relationship between the base and the limit block of the utility model.
[0029] Figure 8 It is a schematic diagram of the assembly of the top plate and the wire limiting mechanism of the embodiment of the utility model.
[0030] Fig. 9 It is a schematic diagram of the assembly of a top plate and a wire limiting mechanism according to another embodiment of the utility model.
[0031] In the figure,
[0032] 1. Base; 11. Top plate; 111. Groove; 12. Bottom plate; 13. Protective medium through hole; 14. Slide groove; 15. Positioning boss; 16. Limiting groove; 17. Fixed shaft; 18. Connecting shaft; 2. Wire limiting mechanism; 21. Left half limiting mechanism; 210. Left limiting groove; 211. Left half limiting flange plate; 212. Left fixed plate; 22. Right half limiting mechanism; 220. Right limiting groove; 221. Right half limiting flange plate; 222. Right fixed plate; 23. Wire limiting hole; 24. Positioning structure; 3. Limiting block; 4. Pipe joint. DETAILED DESCRIPTION
[0033] The wire limiting device and annealing furnace provided by the utility model are explained and illustrated in detail below in conjunction with the drawings in the specification.
[0034] This embodiment specifically discloses a wire limiting device, such as Figure 1 As shown, it includes a base 1, a wire limiting mechanism 2 and a limiting block 3. A protective medium through hole 13 is provided on the base 1. The base 1 is used to be sealed and connected with the annealing tube of the annealing furnace, so that the protective medium through hole 13 is connected with the annealing tube. In this embodiment, the protective medium through hole 13 is vertically arranged, and a pipe joint 4 is fixed on the base 1. The pipe joint 4 is arranged above the protective medium through hole 13. The inner cavity of the pipe joint 4 is connected with the protective medium through hole 13. The pipe joint 4 is fixedly connected with the base 1 by bolts. The inner wall or outer wall of the pipe joint 4 is provided with threads. The pipe joint 4 can be connected with the annealing tube thread, and the sealing effect is good.
[0035] A slide groove 14 is provided inside the base 1 and passes through the base 1 on the left and right. The groove direction of the slide groove 14 is perpendicular to the axial direction of the protective medium through hole 13. The slide groove 14 is connected to the protective medium through hole 13. In this embodiment, the protective medium through hole 13 is arranged above the slide groove 14.
[0036] Alternatively, if Figure 1-4As shown, the base 1 includes a top plate 11 and a bottom plate 12, and a protective medium through hole 13 is provided on the top plate 11. Preferably, the protective medium through hole 13 is provided at the center of the top plate 11. A groove 111 with an opening facing downward is provided on the lower surface of the top plate 11, and the bottom plate 12 is detachably connected to the bottom of the top plate 11. The bottom plate 12 closes part or all of the openings of the groove 111 to form a slide 14. In this embodiment, there are two bottom plates 12, and the width of the bottom plate 12 is smaller than the width of the top plate 11. The two bottom plates 12 are distributed front and back and are respectively fixed on the front and rear sides of the groove 111 on the top plate 11, and the edge of the bottom plate 12 extends to the bottom of the groove 111, thereby forming a slide 14. There is a spacing between the two bottom plates 12, and the spacing is greater than the size of the wire in the same direction, so that the wire can penetrate the base 12 and pass through the gap between the two bottom plates 12.
[0037] like Figure 1 , 4As shown in Figure 5, the wire limiting mechanism 2 includes a left half limiting mechanism 21 and a right half limiting mechanism 22. The left half limiting mechanism 21 is provided with a left limiting groove 210 on the right side edge, and the left limiting groove 210 passes through the left half limiting mechanism 21 vertically. The right half limiting mechanism 22 is provided with a right limiting groove 220 on the left side edge, and the right limiting groove 220 passes through the right half limiting mechanism 22 vertically. The left half limiting mechanism 21 and the right half limiting mechanism 22 are arranged in the slide groove 14, and the left half limiting mechanism 21 and the right half limiting mechanism 22 can be moved along the slide groove 14. The slide groove 14 slides, and the left limiting groove 210 and the right limiting groove 220 are arranged relatively and spliced into the wire limiting hole 23. The shape of the wire limiting hole 23 is set according to the shape of the wire. For example, if the wire is a flat wire, the corresponding wire limiting hole 23 is set to a straight line. The wire limiting hole 23 is connected with the protective medium through hole 13. After the base 1 is connected to the annealing tube, the wire is in the protective medium through hole 13 and the wire limiting hole 23. The left half limiting mechanism 21 and the right half limiting mechanism 22 surround the wire and limit the wire. The gap between the two bottom plates 12 is directly below the wire limiting hole 23, and the width of the gap (that is, the spacing between the two bottom plates 12) is greater than the width of the wire limiting hole 23. In this embodiment, the width refers to the length along the front-to-back direction. The left half limiting mechanism 21 and the right half limiting mechanism 22 are detachably connected to the base 1 by sliding along the slide groove 14. The left limiting groove 210 on the left half limiting mechanism 21 and the right limiting groove 220 on the right half limiting mechanism 22 can be set to a variety of different specifications, that is, the wire limiting hole 23 has different specifications and sizes, and the wire limiting hole 23 of the corresponding size can be selected according to the size of the wire. The left half limiting mechanism 21 and the right half limiting mechanism 22 can be disassembled and replaced with the base 1 by sliding along the slide groove 14. The disassembly is convenient and fast, and timely adjustments can be made according to the sudden change of the wire specifications during processing to improve the working efficiency. Moreover, by disassembling and replacing the left half limiting mechanism 21 and the right half limiting mechanism 22, the size of the wire limiting hole 23 can be matched with the size of the wire. The left half limiting mechanism 21 and the right half limiting mechanism 22 can clamp the wire to prevent the wire from shaking in the wire limiting hole 23, thereby fixing the position of the wire in the annealing tube, reducing friction and scratches on the wire, and ensuring the quality of the wire.
[0038] like Figure 1 , 4 As shown in Figures 5 and 6, both left and right sides of the wire limiting mechanism 2 are provided with limiting blocks 3, which are rotatably connected to the base 1. The limiting blocks 3 are in a first state where the side of the wire limiting mechanism 2 blocks the sliding of the half limiting mechanism on the same side, or in a second state where the half limiting mechanism on the same side is released. When the two limiting blocks 3 are in the first state, the two limiting blocks 3 are on the left and right sides of the wire limiting mechanism 2, the limiting block 3 on the left side is on the left side of the left half limiting mechanism 21, and the limiting block 3 on the right side is on the right side of the right half limiting mechanism 22, as shown in Figures 6 and 6. Figure 1In the state shown, the positions of the left half limiting mechanism 21 and the right half limiting mechanism 22 in the slide slot 14 are fixed, and the left half limiting mechanism 21 and the right half limiting mechanism 22 no longer slide out of the slide slot 14, that is, the size of the wire limiting hole 23 is fixed to match the size of the wire, thereby firmly limiting the wire. When the wire limiting mechanism 2 needs to be replaced, taking the limiting block 3 on the left side as an example, the limiting block 3 rotates to the second state and no longer blocks the left half limiting mechanism 21, so that the left half limiting mechanism 21 can slide out of the slide slot 14, thereby realizing the replacement of the left half limiting mechanism 21. When the other left half limiting mechanism 21 is placed in the slide slot 14, the limiting block 3 on the left side is also in the second state, until the left half limiting mechanism 21 slides to the specified position in the slide slot 14, and the limiting block 3 on the left side rotates to the first state to fix the position of the left half limiting mechanism 21 in the slide slot 14; the limiting block 3 on the right side also uses the same method to switch between the first state and the second state, thereby realizing the blocking and release of the right half limiting mechanism 22.
[0039] In some embodiments, the limit block 3 is also movably connected to the base 1, and the limit block 3 moves in a direction close to or away from the wire limit mechanism 2. When the limit block 3 switches between the first state and the second state, it may be blocked by the wire limit mechanism 2 when it rotates to a certain angle and cannot rotate. Therefore, when disassembling the wire limit mechanism 2, the limit block 3 can be first moved in a direction away from the wire limit mechanism 2 to ensure that the limit block 3 can rotate smoothly, and rotate to a sufficiently large angle so that the wire limit mechanism 2 can slide out of the slide groove 14; after replacing the wire limit mechanism 2, the limit block 3 can be rotated to the first state, at this time, there is a certain distance between the limit block 3 and the wire limit mechanism 2, and the left half limit mechanism 21 and the right half limit mechanism 22 can still slide a certain distance in the slide groove 14, and the size of the wire limit hole 23 cannot be fixed, so the limit block 3 needs to be moved in a direction close to the wire limit mechanism 2 until the limit block 3 contacts the wire limit mechanism 2 to achieve a firm wire limit effect.
[0040] Alternatively, if Figure 1-3 As shown in FIG. 7 , the base 1 is provided with limiting grooves 16 at the two ends corresponding to the slide groove 14, that is, the left edge and the right edge of the top plate 11 are provided with limiting grooves 16, the groove direction of the limiting groove 16 is the same as the groove direction of the slide groove 14, the limiting groove 16 can be connected with the slide groove 14 up and down, or not connected, and a fixed shaft 17 perpendicular to the groove direction of the limiting groove 16 is fixed in the limiting groove 16, as shown in FIG. Figure 5 and 6 As shown, the top plate 11 may be provided with a fixing hole that penetrates the top plate 11 from front to back, and the fixing shaft 17 is fixed in the fixing hole. For example, the fixing shaft 17 may be provided with an internal thread, and the fixing shaft 17 is fixed to the top plate 11 by a bolt that penetrates into the fixing hole and is threadedly connected with the bolt. The limit block 3 rotates around the fixing shaft 17 to switch between the first state and the second state. Specifically, as shown in FIG. Figure 5 and 7 As shown, a connecting shaft 18 is vertically sleeved on the fixed shaft 17 and the connecting shaft 18 rotates around the fixed shaft 17, the fixed shaft 17 is in the limiting groove 16, the connecting shaft 18 is provided with an external thread, the limiting block 3 is threadedly connected to the connecting shaft 18, the diameter of the limiting block 3 is larger than the diameter of the connecting shaft 18, the limiting block 3 is sleeved on the connecting shaft 18 and is threadedly connected to the connecting shaft 18, the limiting block 3 can realize the movable connection with the bottom plate 12 by rotating the thread, and the limiting block 3 can realize the approach or distance to the wire limiting mechanism 2 by moving along the connecting shaft 18. The angle range of the connecting shaft 18 rotating around the fixed shaft 17 is 90°, and it rotates within the horizontal and vertical range. When the limiting block 3 rotates to the first state, the connecting shaft 18 is horizontally arranged, and the bottom of the limiting block 3 blocks the outer side of the semi-limiting mechanism on the same side. The limiting block 3 rotates above the top plate 11 to release the semi-limiting mechanism on the same side. The limit block 3 is threadedly connected to the connecting shaft 18 and is firmly fixed. It has a good blocking effect on the wire limiting mechanism 2 and can fix the size of the wire limiting hole 23. If necessary, the limit block 3 can also be removed from the connecting shaft 18.
[0041] Preferably, the outer surface of the limiting block 3 is provided with anti-slip grooves to facilitate twisting.
[0042] Moreover, the movable connection arrangement between the limit block 3 and the base 1 allows, in certain emergency situations when the size of the wire limit hole 23 needs to be adjusted, the wire limit mechanism 2 can be replaced without disassembling it. The two limit blocks 3 can be moved away from each other, and then the left half limit mechanism 21 can be slid a certain distance to the left along the slide groove 14, and the right half limit mechanism 22 can be slid a certain distance to the right along the slide groove 14, so that the size of the spliced wire limit block 3 can be adjusted, and the operation is convenient and feasible.
[0043] like Figure 8 and 9 As shown, positioning bosses 15 are provided on both side walls of the slide groove 14 of the base 1 at the center position corresponding to the protective medium through hole 13. The positioning bosses 15 are arranged on the front and rear side walls of the groove 111 of the top plate 11. The right end of the left half limit mechanism 21 and the left end of the right half limit mechanism 22 are both provided with positioning structures 24 matching the positioning bosses 15. The positioning structures 24 are positioning grooves (such as Fig. 9 as shown) or positioning ramps (as Figure 8 As shown in the figure, the positioning boss 15 and the positioning structure 24 cooperate to position the center of the wire limiting hole 23 on the central axis of the protective medium through hole 13. The positioning boss 15 and the positioning structure 24 define the stop position of the left half limiting mechanism 21 sliding to the right and the stop position of the right half limiting mechanism 22 sliding to the left, so as to avoid the wire limiting hole 23 and the protective medium through hole 13 being misaligned and unable to clamp the wire.
[0044] Alternatively, if Figure 4, 5 As shown in FIGS. 8 and 9 , the left half-limiting mechanism 21 includes a left half-limiting flange plate 211 and a left fixed plate 212, the left limiting groove 210 is opened at the right side edge of the left half-limiting flange plate 211, and the left half-limiting flange plate 211 is fixed on the left fixed plate 212; the right half-limiting mechanism 22 includes a right half-limiting flange plate 221 and a right fixed plate 222, the right limiting groove 220 is opened at the left side edge of the right half-limiting flange plate 221, and the right half-limiting flange plate 221 is fixed on the right fixed plate 222. In this embodiment, a receiving groove for placing the left half-limiting flange plate 211 is provided on the lower surface of the left fixed plate 212. The left half-limiting flange plate 211 is fixed on the lower surface of the left fixed plate 212 and is in the receiving groove. The left fixed plate 212 does not block the left limiting groove 210. The lower surface of the left half-limiting flange plate 211 does not protrude from the receiving groove, and does not affect the sliding of the left fixed plate 212 in the slide groove 14. A positioning structure 24 is provided on the right end of the left fixed plate 212. A receiving groove for placing the right half-limiting flange plate 221 is provided on the lower surface of the right fixed plate 222. The right half-limiting flange plate 221 is fixed on the lower surface of the right fixed plate 222 and is in the receiving groove. The right fixed plate 222 does not block the right limiting groove 220. The lower surface of the right half-limiting flange plate 221 does not protrude from the receiving groove, and does not affect the sliding of the right fixed plate 222 in the slide groove 14. A positioning structure 24 is provided on the left end of the right fixed plate 222. The left half limit flange plate 211 and the right half limit flange plate 221 can be directly processed by using the existing flange. The specific processing method is: after processing the wire limit hole 23 of suitable size on the existing flange, cut it in half to form the left half limit flange plate 211 and the right half limit flange plate 221. It is convenient to obtain materials and process, and the cost is reduced. Threaded holes are provided on the left fixed plate and the right fixed plate. The left half limit flange plate 211 is connected to the left fixed plate 212 by bolts threadedly connected to the threaded holes on the left fixed plate 212. The left half limit flange plate 211 is clamped between the nut of the bolt and the left fixed plate 212. The right half limit flange plate 221 and the right fixed plate 222 are connected by bolts threadedly connected to the threaded holes on the right fixed plate 222. The right half limit flange plate 221 is clamped between the nut of the bolt and the right fixed plate 222.
[0045] Preferably, the left half limiting flange plate 211 and the right half limiting flange plate 221 are both ceramic plates. The surface of the ceramic material is relatively smooth, which causes less wear and tear on the wires, greatly reducing scratches on the wires.
[0046] The wire limiting device of the present application can adapt to the variability of on-site operations and can adjust the size of the wire limiting hole at any time according to changes in the specifications of the wires; in terms of resources, each replacement only requires simply fixing the flange plate processed according to different specifications on the fixed plate, which greatly reduces the cost of processing; in terms of action, the wire limiting mechanism can be disassembled at any time, even if the wires are in operation, it can be disassembled and assembled at any time, which is flexible and changeable.
[0047] The present application also discloses an annealing furnace, including the wire limiting device described in the above embodiment, the base 1 is sealed and connected to the annealing tube of the annealing furnace, the protective medium through hole 13 is connected to the annealing tube, specifically through the pipe joint 4 and the annealing tube thread connection, the sealing effect is good, the connection is firm and it is easy to disassemble.
[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement and simple improvement made to the essential content of the present invention shall be included in the protection scope of the present invention.
Claims
1. A wire limiting device, characterized in that: It comprises a base (1), a wire limiting mechanism (2) and a limiting block (3). The base (1) is provided with a protective medium through hole (13). The base (1) is provided with a slide groove (14) which penetrates the base (1) from left to right. The groove direction of the slide groove (14) is perpendicular to the axial direction of the protective medium through hole (13). The slide groove (14) is connected to the protective medium through hole (13). The wire limiting mechanism (2) comprises a left limiting mechanism (21) and a right limiting mechanism (22); a left limiting groove (210) is provided on the right side edge of the left limiting mechanism (21); a right limiting groove (220) is provided on the left side edge of the right limiting mechanism (22); the left limiting mechanism (21) and the right limiting mechanism (22) are arranged in the slide groove (14); the left limiting groove (210) and the right limiting groove (220) are arranged opposite to each other and spliced to form a wire limiting hole (23); the wire limiting hole (23) is connected to the protective medium through hole (13); the left limiting mechanism (21) and the right limiting mechanism (22) are detachably connected to the base (1) by sliding along the slide groove (14); The limiting blocks (3) are provided on both the left and right sides of the wire limiting mechanism (2), and the limiting blocks (3) are rotatably connected to the base (1). The limiting blocks (3) are in a first state of blocking the sliding of the half limiting mechanism on the same side of the wire limiting mechanism (2) or in a second state of releasing the half limiting mechanism on the same side through rotation.
2. The electric wire limiting device according to claim 1, characterized in that: The limiting block (3) is also movably connected to the base (1), and the limiting block (3) moves in a direction approaching or away from the electric wire limiting mechanism (2).
3. The electric wire limiting device according to claim 1 or 2, characterized in that: The base (1) is provided with limiting grooves (16) at two ends corresponding to the slide groove (14), the groove direction of the limiting groove (16) is the same as the groove direction of the slide groove (14), a fixed shaft (17) perpendicular to the groove direction of the limiting groove (16) is fixed in the limiting groove (16), and the limiting block (3) rotates around the fixed shaft (17) to realize switching between the first state and the second state.
4. The electric wire limiting device according to claim 3, characterized in that: A connecting shaft (18) is vertically sleeved on the fixed shaft (17) and the connecting shaft (18) rotates around the fixed shaft (17). The connecting shaft (18) is provided with an external thread, and the limit block (3) is threadedly connected to the connecting shaft (18).
5. The electric wire limiting device according to claim 1, characterized in that: Positioning bosses (15) are provided on both side walls of the slide groove (14) of the base (1) at positions corresponding to the center of the protective medium through hole (13); a right end portion of the left half limiting mechanism (21) and a left end portion of the right half limiting mechanism (22) are provided with positioning structures (24) matching the positioning bosses (15); the positioning structures (24) are positioning grooves or positioning slopes; the positioning bosses (15) and the positioning structures (24) cooperate to position the center of the wire limiting hole (23) on the central axis of the protective medium through hole (13).
6. The electric wire limiting device according to claim 1, characterized in that: The left half-limiting mechanism (21) comprises a left half-limiting flange plate (211) and a left fixed plate (212); the left limit groove (210) is arranged on the right side edge of the left half-limiting flange plate (211); and the left half-limiting flange plate (211) is fixed on the left fixed plate (212); The right half-limiting mechanism (22) comprises a right half-limiting flange plate (221) and a right fixed plate (222), the right limiting groove (220) is arranged on the left edge of the right half-limiting flange plate (221), and the right half-limiting flange plate (221) is fixed on the right fixed plate (222).
7. The electric wire limiting device according to claim 6, characterized in that: The left half limiting flange plate (211) and the right half limiting flange plate (221) are both ceramic plates.
8. The electric wire limiting device according to claim 1, characterized in that: A pipe joint (4) is fixed on the base (1), and the inner cavity of the pipe joint (4) is in communication with the protective medium through hole (13).
9. The electric wire limiting device according to claim 1, characterized in that: The base (1) comprises a top plate (11) and a bottom plate (12); the protective medium through hole (13) is provided on the top plate (11); a groove (111) with an opening facing downward is provided on the lower surface of the top plate (11); the bottom plate (12) is detachably connected to the bottom of the top plate (11); the bottom plate (12) closes part or all of the opening of the groove (111) to form the slide groove (14).
10. An annealing furnace, characterized in that: It comprises the electric wire limiting device according to any one of claims 1 to 9, wherein the base (1) is sealedly connected to the annealing tube of the annealing furnace, and the protective medium through hole (13) is connected to the annealing tube.