Box-type resistance furnace for heat treatment of cable copper conductor

Abstract

A box-type resistance furnace for heat treatment of a cable copper conductor relates to the technical field of heat treatment and comprises a furnace body, a furnace chamber is arranged in the furnace body, a resistance wire is arranged on the peripheral wall of the furnace chamber, guide rods are arranged on two sides of the front end of the furnace body, and a furnace door is arranged on the guide rods in a sliding manner; door knives are arranged at the upper and lower ends of the inner side surface of the furnace door, first mounting grooves are formed in the left and right ends of the inner side surface of the furnace door, and first sealing strips are mounted in the first mounting grooves; mounting plates are arranged at the upper end and the lower end of a furnace frame at the front end of the furnace body, second mounting grooves are formed in the top surfaces of the mounting plates, second sealing strips are mounted in the second mounting grooves, third mounting grooves are formed in the left end and the right end of the furnace frame at the front end of the furnace body, and third sealing strips are mounted in the third mounting grooves; the sealing strips of different structures are arranged on the periphery of the furnace door and the periphery of the furnace frame according to the opening and closing mode of the furnace door, the overall sealing performance is improved, the situation that the heat treatment period is prolonged due to heat loss in the furnace cavity is avoided, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat treatment technical field, concretely relates to a box type resistance furnace for cable copper conductor heat treatment. BACKGROUND

[0002] After copper alloy wire is drawn, work hardening phenomenon appears, internal crystal grains are broken, crystal lattice is distorted, hardness and strength increase, plasticity and toughness decrease, and there is a large residual stress. After recrystallization annealing process, fine and uniform equiaxed grains can be obtained, thereby improving internal organization, increasing plasticity and toughness, and being beneficial to subsequent cold drawing.

[0003] During the heat treatment of the copper conductor, the sealing property of the furnace door must be ensured, if the sealing property does not meet the requirement, the heat loss in the furnace will be caused, the heat treatment period is lengthened, the energy consumption is increased, the heating temperature in the hearth is uneven, and the metal product cannot meet the process requirement. The sealing effect of the box type resistance furnace used for the heat treatment of the copper conductor in the prior art is not good, and the sealing structure is complex and the operation is cumbersome. UTILITY MODEL CONTENT

[0004] In view of the defects in the prior art, the utility model aims at providing a box type resistance furnace for cable copper conductor heat treatment, which can solve the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A box type resistance furnace for cable copper conductor heat treatment, comprising a furnace body, a furnace cavity is arranged in the furnace body, resistance wires are arranged on the peripheral wall of the furnace cavity, guide rods are arranged on both sides of the front end of the furnace body, and a furnace door is slidably arranged on the guide rods; door knives are arranged on the upper and lower ends of the inner side of the furnace door, first installation grooves are arranged on the left and right ends of the inner side of the furnace door, and first sealing strips are arranged in the first installation grooves; installation plates are arranged on the upper and lower ends of the furnace frame at the front end of the furnace body, second installation grooves are arranged on the top surface of the installation plates, second sealing strips are arranged in the second installation grooves, third installation grooves are arranged on the left and right ends of the furnace frame at the front end of the furnace body, and third sealing strips are arranged in the third installation grooves; wire inlet holes and wire outlet holes are arranged on the opposite two furnace walls of the furnace body, wire assemblies are arranged below the wire inlet holes and the wire outlet holes, and the wire assemblies are slidably arranged on the furnace walls.

[0007] Preferably, the top portions of the two guide rods are connected with a same horizontal rod, a cylinder is arranged on the horizontal rod, the piston rod of the cylinder is connected with the top portion of the furnace door, and the two sides of the furnace door are connected with the two guide rods through guide sleeves.

[0008] Preferably, the first sealing strips and the third sealing strips are L-shaped structures, and the second sealing strip is an Ω-shaped structure.

[0009] Preferably, the wire inlet hole and the wire outlet hole are both filled with asbestos fibers.

[0010] Preferably, the wire assembly comprises a wire rod, a wire column is arranged at the front end of the wire rod, a plurality of V-shaped grooves are arranged on the wire column, the diameters of the plurality of V-shaped grooves are different, and a wire plate is arranged at the rear end of the wire rod.

[0011] Preferably, a slot is arranged on the furnace wall, a sliding rail is arranged in the slot, and the wire plate is slidably arranged on the sliding rail.

[0012] Preferably, the wire plate comprises two clamping plates, the two clamping plates are respectively arranged on the two sides of the sliding rail, and the two clamping plates are connected by screws.

[0013] Preferably, a plurality of V-shaped groove center lines are arranged on the outer surface of the clamping plate on the outer side of the sliding rail, and the plurality of V-shaped groove center lines one-to-one correspond to the center positions of the plurality of V-shaped grooves on the wire column.

[0014] Preferably, wire hole center lines are arranged on the outer sides of the two opposite furnace walls, the wire hole center lines are arranged below the sliding rail, and the two wire hole center lines respectively correspond to the center positions of the wire inlet hole and the wire outlet hole.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. Different sealing strips are arranged around the furnace door and the furnace frame according to the opening and closing mode of the furnace door, the sealing property of the whole is improved, the heat loss in the furnace cavity is avoided, the heat treatment period is shortened, and the energy consumption is reduced.

[0017] 2. The wire assembly is suitable for copper wires of different specifications, and the practicality of the electric resistance furnace is improved. According to the diameter of the copper wire, a suitable V-shaped groove is selected, and the toughness and plasticity of the copper wire in the heat treatment process are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0019] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Fig. 2 It is a schematic diagram of the left and right end sealing structure of the furnace door and the furnace body of the utility model;

[0021] Fig. 3 It is the upper and lower end sealing structure schematic view of the furnace door and the furnace body of the utility model.

[0022] Fig. 4 It is the wire assembly structure schematic view of the utility model.

[0023] Mark explanation:

[0024] 1-furnace body, 2-furnace cavity, 3-resistance wire, 4-guide rod, 5-furnace door, 6-door knife, 7-first installation slot, 8-first sealing strip, 9-mounting plate, 10-second installation slot, 11-second sealing strip, 12-third installation slot, 13-third sealing strip, 14-wire inlet hole, 15-wire outlet hole, 16-cross rod, 17-cylinder, 18-guide sleeve, 19-wire rod, 20-wire column, 21-V-shaped groove, 22-wire plate, 221-clamping plate, 222-screw, 23-slideway, 24-V-shaped groove center line, 25-wire hole center line. Specific implementation

[0025] The contents of the utility model are described in detail in the form of example in combination with the drawings of the specification, and obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Embodiment

[0026] As Figs. 1 to 4 shown, the utility model discloses a box type resistance furnace for cable copper wire heat treatment, including furnace body 1, be equipped with furnace cavity 2 in furnace body 1, be equipped with resistance wire 3 on the perimeter wall of furnace cavity 2, the both sides of furnace body 1 front end are equipped with guide rod 4, the furnace door 5 of sliding arrangement is equipped on guide rod 4, the both ends of furnace door 5 inboard surface are equipped with door knife 6, the both ends of furnace door 5 inboard surface are equipped with first installation slot 7, first installation slot 7 is equipped with first sealing strip 8, the both ends of furnace body 1 front end furnace frame are equipped with mounting plate 9, the top surface of mounting plate 9 is equipped with second installation slot 10, second installation slot 10 is equipped with second sealing strip 11, the both ends of furnace body 1 front end furnace frame are equipped with third installation slot 12, third installation slot 12 is equipped with third sealing strip 13, preferably, first sealing strip 8 and third sealing strip 13 are L type structure, and second sealing strip 11 is Ω type structure.

[0027] Further, in the embodiment, the top of the two guide rods 4 is connected with the same cross rod 16, the cross rod 16 is provided with the air cylinder 17, the piston rod of the air cylinder 17 is connected with the top of the furnace door 5, and the two sides of the furnace door 5 are connected with the two guide rods 4 through the guide sleeves 18 respectively. By arranging the guide rod 4, the cross rod 16, the air cylinder 17 and the guide sleeve 18, the opening and closing of the furnace door 5 is guided, and the manual operation of the operator is not needed, so that the convenience of the equipment is increased.

[0028] When the furnace door 5 is closed, the air cylinder 17 drives the furnace door 5 to move downwards until the door knife 6 on the inner side of the furnace door 5 is in contact with and extruded by the second sealing strip 11 in the furnace frame mounting plate 9, so that the furnace door 5 is sealed with the upper and lower ends of the furnace body 1; in the process of moving downwards, the first sealing strip 8 on the two ends of the inner side of the furnace door 5 is inserted into the third sealing strip 13 on the two ends of the furnace frame, so that the furnace door 5 is sealed with the left and right ends of the furnace body 1; the four sides are all sealed, so that the sealing property of the whole equipment is increased, the heat loss in the furnace cavity 2 is avoided, the heat treatment period is not lengthened, and the energy consumption is reduced.

[0029] The opposite two furnace walls of the furnace body 1 are respectively provided with the wire inlet hole 14 and the wire outlet hole 15, the wire inlet hole 14 and the wire outlet hole 15 are all filled with asbestos fibers to increase the sealing property; the lower part of the wire inlet hole 14 and the wire outlet hole 15 is provided with the wire guide assembly, and the wire guide assembly is slidingly arranged on the furnace wall. By arranging the wire guide assembly, the appropriate V-shaped groove can be selected according to the diameter of the copper wire, and the toughness and plasticity of the copper wire in the heat treatment process are further increased.

[0030] The wire guide assembly comprises the wire rod 19, the front end of the wire rod 19 is provided with the wire column 20, the wire column 20 is provided with a plurality of V-shaped grooves 21, the diameters of the plurality of V-shaped grooves 21 are all different, the rear end of the wire rod 19 is provided with the wire plate 22, and the wire plate 22 is slidingly arranged on the furnace wall. By slidingly connecting the wire plate 22 with the furnace wall, the position of the wire column 20 can be adjusted, so that the V-shaped groove 21 always corresponds to the wire hole position, and the straightness of the copper wire is ensured.

[0031] Further, in the embodiment, the furnace wall is provided with the slot, the slot is provided with the sliding rail 23, and the wire plate 22 is slidingly connected with the sliding rail 23. The wire plate 22 comprises the two clamping plates 221, the two clamping plates 221 are respectively located on the two sides of the sliding rail 23, and the two clamping plates 221 are connected through the screw 222. When the wire plate 22 is moved, the screw 222 is loosened first, the clamping plate 221 is moved to the appropriate position, and then the screw 222 is fastened, so that the position adjustment is completed.

[0032] Further, in the embodiment, the outer surface of the clamping plate 221 outside the slide rail 23 is provided with a plurality of V-shaped groove center lines 24, and the plurality of V-shaped groove center lines 24 correspond to the center positions of the plurality of V-shaped grooves 21 on the wire column 20 one by one; the wire hole center line 25 is arranged on the outer side of the two opposite furnace walls of the furnace body 1, and the wire hole center line 25 is located below the slide rail 23, and the two wire hole center lines 25 correspond to the center positions of the incoming wire hole 14 and the outgoing wire hole 15 respectively. By arranging the V-shaped groove center line 24 and the wire hole center line 25, the position is adjusted, which is beneficial to realize accurate correction, further ensures the straightness of the copper wire during heat treatment, avoids friction and causes wear of the copper wire.

[0033] Working principle: in use, first, the positions of the V-shaped grooves 21 on the wire column 20 in the wire assembly are adjusted according to the diameter of the copper wire, so that they correspond to the positions of the wire hole center lines 25; after the adjustment is completed, the furnace door 5 is opened by the action of the air cylinder 17, the copper wire is pulled through the incoming wire hole 14 to the two wire assemblies in the furnace cavity 2 in turn, and finally is pulled out from the outgoing wire hole 15; after the copper wire is fixed, the furnace door 5 is closed, and the air cylinder 17 is actuated again to drive the furnace door 5 to move downward, in the moving process, the sealing strip seals the equipment to avoid heat loss, and finally the copper wire can be heated by power supply.

[0034] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A box-type resistance furnace for heat treatment of copper conductor of cable, comprising a furnace body (1), a furnace cavity (2) is arranged in the furnace body (1), and a resistance wire (3) is arranged on the peripheral wall of the furnace cavity (2), characterized in that: The front end of the furnace body (1) is provided with guide rods (4) on both sides, and a furnace door (5) is slidably arranged on the guide rods (4); the inner side of the furnace door (5) is provided with door knives (6) at the upper and lower ends, and first installation grooves (7) are formed at the left and right ends of the inner side of the furnace door (5), and first sealing strips (8) are installed in the first installation grooves (7); the upper and lower ends of the front end furnace frame of the furnace body (1) are provided with mounting plates (9), and second installation grooves (10) are formed in the top surface of the mounting plates (9), and second sealing strips (11) are installed in the second installation grooves (10); third installation grooves (12) are formed at the left and right ends of the front end furnace frame of the furnace body (1), and third sealing strips (13) are installed in the third installation grooves (12); the opposite two furnace walls of the furnace body (1) are respectively provided with wire inlet holes (14) and wire outlet holes (15), and wire guide assemblies are arranged below the wire inlet holes (14) and the wire outlet holes (15) and slidably arranged on the furnace walls.

2. The box-type resistance furnace for heat treatment of copper conductor of cable according to claim 1, characterized in that: The top of the two guide rods (4) is connected with the same cross rod (16), and the cross rod (16) is provided with a gas cylinder (17), the piston rod of the gas cylinder (17) is connected with the top of the furnace door (5), and the two sides of the furnace door (5) are connected with the two guide rods (4) through guide sleeves (18).

3. The box-type resistance furnace for heat treatment of copper conductor of cable according to claim 1, characterized in that: The first sealing strip (8) and the third sealing strip (13) are both L-shaped structures, and the second sealing strip (11) is an Ω-shaped structure.

4. The box-type resistance furnace for heat treatment of copper conductor of cable according to claim 1, characterized in that: The wire inlet holes (14) and the wire outlet holes (15) are filled with asbestos fibers.

5. The box type resistance furnace for heat treatment of copper conductor of cable according to claim 1, characterized in that: The wire guide assembly comprises a wire rod (19), the front end of the wire rod (19) is provided with a wire column (20), a plurality of V-shaped grooves (21) are formed in the wire column (20), the diameters of the plurality of V-shaped grooves (21) are different, the rear end of the wire rod (19) is provided with a wire plate (22), and the wire plate (22) is slidably arranged on the furnace wall.

6. The box type resistance furnace for heat treatment of copper conductor of cable according to claim 5, characterized in that: A slot is formed in the furnace wall, a sliding rail (23) is installed in the slot, and the wire plate (22) is slidably arranged in cooperation with the sliding rail (23).

7. The box type resistance furnace for heat treatment of copper conductor of cable according to claim 6, characterized in that: The wire plate (22) comprises two clamping plates (221), the two clamping plates (221) are respectively arranged on the two sides of the sliding rail (23), and the two clamping plates (221) are connected by screws (222).

8. The box type resistance furnace for heat treatment of copper conductor of cable according to claim 7, characterized in that: A plurality of V-shaped groove center lines (24) are arranged on the outer surface of the clamping plate (221) on the outer side of the sliding rail (23), and the plurality of V-shaped groove center lines (24) one-to-one correspond to the center positions of the plurality of V-shaped grooves (21) on the wire column (20).

9. The box type resistance furnace for heat treatment of copper conductor of cable according to claim 8, characterized in that: Wire hole center lines (25) are arranged on the outer sides of the opposite two furnace walls of the furnace body (1), the wire hole center lines (25) are located below the sliding rail (23), and the two wire hole center lines (25) respectively correspond to the center positions of the wire inlet holes (14) and the wire outlet holes (15).

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