Copper wire annealing device for cable production

Abstract

The utility model discloses a copper wire annealing device for cable production. The copper wire annealing device comprises a furnace body, a heating pipe, a heat insulation cylinder and a limiting assembly, the furnace body is provided with a heat insulation cylinder, a refractory brick is arranged in the heat insulation cylinder, a heating pipe is transversely arranged in the refractory brick, sleeves are arranged at the two ends of the heating pipe, and the sleeves are fixed in the refractory brick through refractory glue; the refractory bricks and the heat insulation cylinder arranged on the device can isolate high temperature generated by the heating pipe, heat is prevented from baking the furnace body, a copper wire enters the device from the left side, it can be guaranteed that the copper wire is always kept horizontal from the second limiting wheel to the cylinder, the whole copper wire is straightened, the copper wire is prevented from making contact with the heating pipe, all-around annealing of the copper wire is guaranteed, and the service life of the copper wire is prolonged. The device is simple in structure, the copper wire production efficiency can be greatly improved, the investment of labor cost is reduced, and automatic annealing is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable production equipment, and specifically relates to a copper wire annealing device for cable production. Background Art

[0002] The production of cables first requires the two main raw materials, copper and aluminum, to be drawn into single wires, and then the single wires are annealed. After being heated to a certain temperature, copper and aluminum can be recrystallized to increase the mobility of the single wires and reduce the strength of the single wires to meet the cable's requirements for conductive cores. Finally, the conductors are twisted and the insulation layer is extruded to form cables, which can be packaged and stored after acceptance.

[0003] Annealing is a very important step in the production process, which can eliminate the residual stress of the copper wire and refine the crystallization. The existing copper wire annealing method is to wind the copper wire into a bundle after drawing and then place it in an annealing furnace for heating and annealing. However, this method is very troublesome. Since the copper wire is very thin, it is easy to get tangled or even broken when winding it. It is also easy to get hot and stick together during the annealing process. It is very troublesome to handle, and manual participation is required during the operation, which greatly reduces the production efficiency. The repeated opening and closing of the annealing furnace not only fails to keep the temperature in the furnace constant, but also easily wears the furnace door for a long time, causing the furnace to leak. Utility Model Content

[0004] In order to overcome the problems in the background technology, the utility model provides a copper wire annealing device for cable production.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A copper wire annealing device for cable production comprises: a furnace body, a heating tube, an insulating tube, and a limiting assembly; the furnace body is provided with an insulating tube, refractory bricks are installed in the insulating tube, a heating tube is horizontally arranged in the refractory bricks, sleeves are installed at both ends of the heating tube, and the sleeves are fixed in the refractory bricks by refractory glue; the limiting assembly comprises a No. 1 limiting wheel, a No. 2 limiting wheel, a retaining ring, and a positioning plate; the No. 1 limiting wheel is arranged on the left side of the heating tube near the side wall of the furnace body, the No. 2 limiting wheel is arranged on the left side of the heating tube near the refractory bricks, the No. 1 limiting wheel and the No. 2 limiting wheel are on the same plane, the retaining ring is arranged on the right side of the heating tube, and the positioning plate is arranged on the right side of the retaining ring.

[0007] Furthermore, the refractory bricks are in a hexagonal structure, the insulation tube is in a hollow cylindrical structure, the heating tube is in a spiral structure, the insulation tube, refractory bricks and heating tube are coaxially mounted together in sequence, and the front and rear ends are sealed and connected by refractory glue.

[0008] Furthermore, the lower end face of the No. 2 limiting wheel is on the same straight line as the center of the sleeve, the upper end face of the No. 1 limiting wheel is higher than the upper end face of the No. 2 limiting wheel, the positioning plate is circular, and a hollow cylinder is horizontally provided at the center of the circle, and the central axis of the cylinder is on the same straight line as the center of the sleeve, the copper wire extends from the left side to the upper end face of the No. 1 limiting wheel, bends downward and extends to the lower end face of the No. 2 limiting wheel, and then passes through the left sleeve, heating tube, right sleeve, retaining ring, and cylinder in sequence along the horizontal direction.

[0009] Furthermore, an exhaust pipe is provided above the furnace body, and the exhaust pipe extends vertically downward from the top of the furnace body, passes through the upper wall of the furnace body, the insulation tube, and the refractory bricks in sequence, and multiple exhaust pipes are linearly arranged along the heating tube.

[0010] Furthermore, the first limiting wheel and the second limiting wheel are both freely rotatable pulleys, the first limiting wheel and the second limiting wheel have the same width, and the diameter of the first limiting wheel is greater than the diameter of the second limiting wheel.

[0011] Furthermore, the position where the No. 1 limiting wheel and the No. 2 limiting wheel are arranged on the left side of the furnace body is a cavity, and a flip door is installed in front of the cavity.

[0012] Furthermore, the retaining ring is fixed on the furnace body, and the positioning plate is attached to the right side of the retaining ring, and the positioning plate can be slidably removed.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a copper wire annealing device for cable production. The copper wire after drawing is passed through a heating tube, and the heating tube generates high temperature to anneal the copper wire. During this process, the copper wire is stretched and moves slowly. Since the copper wire is very thin, the annealing can be completed after passing through the heating tube, and the device can work continuously without the participation of workers, thereby greatly improving the production efficiency.

[0015] The refractory bricks and insulation cylinders provided in this device can isolate the high temperature generated by the heating tube to prevent the heat from baking the furnace body. The copper wire enters the device from the left side, and can be ensured to always remain horizontal from the No. 2 limit wheel to the cylinder. The entire copper wire is straight to avoid contact between the copper wire and the heating tube, ensuring all-round annealing of the copper wire. This device has a simple structure, can greatly improve the efficiency of copper wire production, reduce labor cost investment, and realize automatic annealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the internal structure of the device of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the device of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall structure of the device of the utility model;

[0020] Figure 4 It is a schematic diagram of the local structure of the device of the utility model;

[0021] Figure 5 This is a schematic diagram of the heating tube structure of the utility model;

[0022] 1-furnace body, 11-exhaust pipe, 12-flip door, 2-heating tube, 3-insulation tube, 4-limiting assembly, 41-limiting wheel No. 1, 42-limiting wheel No. 2, 43-retaining ring, 44-positioning plate, 441-cylinder, 5-refractory brick, 6-sleeve, 7-copper wire. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 5 The utility model discloses a copper wire annealing device for cable production, comprising: a furnace body 1, a heating tube 2, an insulating tube 3, and a limiting assembly 4; the furnace body 1 is provided with an insulating tube 3, a refractory brick 5 is installed in the insulating tube 3, a heating tube 2 is horizontally arranged in the refractory brick 5, sleeves 6 are installed at both ends of the heating tube 2, and the sleeves 6 are fixed in the refractory brick 5 by refractory glue, the limiting assembly 4 comprises a first limiting wheel 41, a second limiting wheel 42, a retaining ring 43, and a positioning plate 44, the first limiting wheel 41 is arranged at the left side of the heating tube 2 near the side wall of the furnace body 1, the second limiting wheel 42 is arranged at the left side of the heating tube 2 near the refractory brick 5, the first limiting wheel 41 and the second limiting wheel 42 are on the same plane, the retaining ring 43 is arranged on the right side of the heating tube 2, and the positioning plate 44 is arranged on the right side of the retaining ring 43.

[0025] See also Figure 1 , Figure 2As shown, the device mainly places the copper wire 7 in the heating tube 2 and passes it slowly. The heating tube 2 is powered on to generate heat to anneal the copper wire 7. Since the copper wire is very thin, it does not need to be heated and annealed for a long time. First, the copper wire 7 enters from the left side of the device, first reaches the upper end of the No. 1 limiting wheel 41, and then connects to the lower end position of the No. 2 limiting wheel 42, and then extends horizontally to the right, passing through the sleeve 6, the heating tube 2, the retaining ring 43, and the positioning plate 44 in turn, and finally extends from the right side of the device to enter the next process.

[0026] In this embodiment, the refractory bricks 5 are in a hexagonal structure, the insulation tube 3 is a hollow cylindrical structure, the heating tube 2 is a spiral structure, the insulation tube 3, the refractory bricks 5, and the heating tube 2 are coaxially mounted together in sequence, and the front and rear ends are sealed with refractory glue.

[0027] See also Figure 4 , Figure 5 As shown, the heating tube 2 is the main annealing component of the device. In order to prevent the heat loss of the heating tube 2 during the heating process, a hexagonal refractory brick 5 is arranged on the outside of the heating tube 2, and an insulating tube 3 with a hollow cylindrical tube structure is arranged on the outside of the refractory brick 5. In this way, the heat inside the refractory brick 5 can be constant and not easy to lose. At the same time, the insulating tube 3 can block the preheating of the heating tube 2 to prevent the outer wall of the furnace from damaging the device and workers from being scalded, thereby ensuring the safety of the device. The insulating tube 3, refractory brick 5, and the front and rear ends of the heating tube 2 are all sealed with refractory glue to make it more difficult for heat to be lost, and the three are connected and fixed at the same time.

[0028] In this embodiment, the lower end face of the No. 2 limiting wheel 42 is on the same straight line as the center of the sleeve 6, the upper end face of the No. 1 limiting wheel 41 is higher than the upper end face of the No. 2 limiting wheel 42, the positioning plate 44 is circular, and a hollow cylinder 441 is horizontally provided at the center of the circle, and the central axis of the cylinder 441 is on the same straight line as the center of the sleeve 6, the copper wire 7 extends from the left side to the upper end face of the No. 1 limiting wheel 41, bends downward and extends to the lower end face of the No. 2 limiting wheel 42, and then passes through the left sleeve 6, the heating tube 2, the right sleeve 6, the retaining ring 43, and the cylinder 441 in the horizontal direction.

[0029] See also Figure 2 As shown, in this device, from the lower end surface of the No. 2 limiting wheel 42 to the central axis of the cylinder 441, the copper wires are stretched straight and are on the same horizontal line. The moving path enters from the left end of the furnace body 1, is placed on the upper end surface of the No. 1 limiting wheel 41, and then is connected to the lower end surface of the No. 2 limiting wheel 42. In the horizontal direction, it passes through the left sleeve 6, the heating tube 2, the right sleeve 6, the retaining ring 43, and the cylinder 441 in turn, and finally extends from the center position of the cylinder 441.

[0030] In this embodiment, an exhaust pipe 11 is provided above the furnace body 1. The exhaust pipe 11 extends vertically downward from the top of the furnace body 1, passes through the upper wall of the furnace body 1, the insulation tube 3, the refractory bricks 5 in sequence, and multiple exhaust pipes 11 are linearly arranged along the heating tube 2.

[0031] See also Figure 2 , Figure 3 As shown, a plurality of exhaust pipes 11 are sequentially arranged above the heating tube 2, and the waste gas generated during the annealing process can be collected through the exhaust pipes 11 and sent to an external gas purification device for treatment. The copper wire may contain other impurities such as sulfur and phosphorus, which may generate harmful gases when heated. These gases can be collected through the exhaust pipes 11 to avoid flowing out of the device and polluting the environment.

[0032] In this embodiment, the first limiting wheel 41 and the second limiting wheel 42 are both freely rotatable pulleys, the first limiting wheel 41 and the second limiting wheel 42 have the same width, and the diameter of the first limiting wheel 41 is greater than the diameter of the second limiting wheel 42.

[0033] See also Figure 2 , Figure 4 As shown, the copper wire 7 is mounted on the No. 1 limiting wheel 41 and the No. 2 limiting wheel 42. When the copper wire 7 moves slowly in the device, the copper wire 7 mounted on the No. 1 limiting wheel 41 and the No. 2 limiting wheel 42 is also pulled. Since the No. 1 limiting wheel 41 and the No. 2 limiting wheel 42 are both freely rotatable pulleys, they can be rotated to transport the copper wire 7 to the right without interfering with the movement state of the copper wire 7.

[0034] In this embodiment, the position where the first limiting wheel 41 and the second limiting wheel 42 are arranged on the left side of the furnace body 1 is a cavity, and a flip door 12 is installed in front of the cavity.

[0035] See also Figure 3 As shown, a flip door 12 is installed in front of the cavity, which can be opened from this position, making it convenient for workers to install the copper wire 7 on the No. 1 limiting wheel 41 and the No. 2 limiting wheel 42, and also convenient for passing the copper wire 7 through the heating tube 2, making it convenient for workers to install the copper wire 7.

[0036] In this embodiment, the retaining ring 43 is fixed on the furnace body 1, and the positioning plate 44 is attached to the right side of the retaining ring 43, and the positioning plate 44 can be slidably removed.

[0037] See also Figure 2 , Figure 3As shown, after the copper wire 7 extends out from the right side of the heating tube 2, it is located on the inner side of the retaining ring 43. In order to prevent heat from flowing out from the right side, the right side of the heating tube 2 needs to be sealed, so a positioning plate 44 is set on the right side of the retaining ring 43. The cylinder 441 on the positioning plate 44 is only for the copper wire 7 to pass through to avoid a large amount of heat loss. The retaining ring 43 mainly plays the role of limiting and blocking the positioning plate 44. When the copper wire 7 extends out from the right side, the copper wire 7 is passed through the cylinder 441, and then the entire positioning plate 44 is installed on the retaining ring 43, and it is also removed at the same time, so that it is more convenient to load and unload the copper wire 7.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A copper wire annealing device for cable production, characterized in that: include: A furnace body (1), a heating tube (2), an insulating tube (3), and a limiting assembly (4); the furnace body (1) is provided with an insulating tube (3), a refractory brick (5) is installed in the insulating tube (3), a heating tube (2) is transversely arranged in the refractory brick (5), sleeves (6) are installed at both ends of the heating tube (2), the sleeves (6) are fixed in the refractory brick (5) by refractory glue, the limiting assembly (4) comprises a first limiting wheel (41), a second limiting wheel (42), a retaining ring (43), and a positioning plate (44), the first limiting wheel (41) is arranged at a position on the left side of the heating tube (2) close to the side wall of the furnace body (1), the second limiting wheel (42) is arranged at a position on the left side of the heating tube (2) close to the refractory brick (5), the first limiting wheel (41) and the second limiting wheel (42) are on the same plane, the retaining ring (43) is arranged at the right side of the heating tube (2), and the positioning plate (44) is arranged at the right side of the retaining ring (43).

2. A copper wire annealing device for cable production according to claim 1, characterized in that: The refractory bricks (5) are of a hexagonal structure, the heat insulating tube (3) is of a hollow cylindrical structure, the heating tube (2) is of a spiral structure, the heat insulating tube (3), the refractory bricks (5), and the heating tube (2) are coaxially sleeved together in sequence, and the front and rear ends are sealed and connected by refractory glue.

3. The copper wire annealing device for cable production according to claim 1, characterized in that: The lower end surface of the second limiting wheel (42) is on the same straight line as the center of the sleeve (6); the upper end surface of the first limiting wheel (41) is higher than the upper end surface of the second limiting wheel (42); the positioning plate (44) is circular, and a hollow cylinder (441) is transversely provided at the center of the circle; the central axis of the cylinder (441) is on the same straight line as the center of the sleeve (6); the copper wire (7) extends from the left side to the upper end surface of the first limiting wheel (41), bends downward and extends to the lower end surface of the second limiting wheel (42), and then passes through the left sleeve (6), the heating tube (2), the right sleeve (6), the retaining ring (43), and the cylinder (441) in sequence in the horizontal direction.

4. The copper wire annealing device for cable production according to claim 1, characterized in that: An exhaust pipe (11) is provided above the furnace body (1). The exhaust pipe (11) extends vertically downward from the top of the furnace body (1), penetrates the upper wall of the furnace body (1), the heat insulation tube (3), and the refractory bricks (5) in sequence, and a plurality of exhaust pipes (11) are linearly arranged along the heating tube (2).

5. A copper wire annealing device for cable production according to claim 1 or 3, characterized in that: The first limiting wheel (41) and the second limiting wheel (42) are both freely rotatable pulleys. The first limiting wheel (41) and the second limiting wheel (42) have the same width, and the diameter of the first limiting wheel (41) is greater than the diameter of the second limiting wheel (42).

6. The copper wire annealing device for cable production according to claim 1, characterized in that: The position where the first limiting wheel (41) and the second limiting wheel (42) are arranged on the left side of the furnace body (1) is a cavity, and a flip door (12) is installed in front of the cavity.

7. The copper wire annealing device for cable production according to claim 1, characterized in that: The retaining ring (43) is fixed on the furnace body (1), and the positioning plate (44) is attached to the right side of the retaining ring (43), while the positioning plate (44) is slidably removable.

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