A copper wire drawing device

Abstract

The present invention discloses a copper wire stretching device, belonging to the technical field of wire processing equipment, which solves the problems of uneven thickness and unreasonable stretching of copper wires during stretching. The technical key points are as follows: It includes a frame, on which a copper wire unwinding roller, a variable diameter die base, a stretching assembly, a traction wheel and a copper wire winding roller are sequentially arranged. A heating cylinder and a die head are arranged in the variable diameter die base. The stretching assembly includes a stretching substrate, stretching rollers and a wire expanding roller. It uses the copper wire to pass through the copper wire unwinding roller, the variable diameter die base, the stretching assembly, the traction wheel and the copper wire winding roller in sequence, heats the copper wire by the heating cylinder in the variable diameter die base and stretches it with variable diameter through the die head, and then jointly stretches the copper wire by the rotating wire expanding roller and a number of stretching rollers that alternately rise and fall, so as to stretch the copper wire and make the diameter of the copper wire thinner, and the copper wire stretching is efficient and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of wire processing equipment, and more particularly to a copper wire drawing device. Background Art

[0002] During the wire processing, a wire drawing machine is one of the commonly used equipment in wire processing enterprises. The wire drawing machine is also called a wire drawing machine, a wire drawing machine, etc. It belongs to the pre-processing equipment for the production of metal products such as standard parts. The purpose is to subject the wire or bar of metal products production enterprises such as steel standard parts to the drawing treatment of the wire drawing machine, so that the diameter, roundness, internal metallographic structure, surface finish and straightness of the wire or bar all meet the raw material treatment requirements for the production of metal products such as standard parts.

[0003] However, when drawing copper wire, the existing wire drawing machine is difficult to stretch the copper wire to the required diameter in one pass during the drawing process. Moreover, for relatively thick copper wire, it is impossible to first perform a diameter change and then a stretching operation. The copper wire needs to be subjected to multiple diameter change stretching until the appropriate diameter is reached. During the multiple diameter change stretching process, the quality stability of the copper wire will be affected, resulting in uneven stretching, causing the copper wire to be of different thicknesses, and there are problems of large stretching and unstable quality. Therefore, a copper wire drawing device is needed to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the embodiment of the present invention is to provide a copper wire drawing device to solve the problems in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A copper wire drawing device includes a frame, on which a copper wire unwinding roller, a diameter-changing die holder, a stretching assembly, a traction wheel and a copper wire winding roller are sequentially arranged. The diameter-changing die holder is provided with a heating cylinder and a die head. The stretching assembly includes a stretching substrate, stretching rollers and a wire expanding roller. The wire expanding roller is installed on the upper part of the stretching substrate, and the stretching rollers are arranged on the lower part of the stretching substrate.

[0007] As a further solution of the present invention, one end of the copper wire unwinding roller is connected with an unwinding motor. The diameter-changing die holder is fixed on the frame, and the diameter-changing die holder is located between the copper wire unwinding roller and the stretching assembly.

[0008] As a further solution of the present invention, the heating cylinder and the die head are arranged on the same axis. A high-frequency heating coil is installed inside the heating cylinder, and the high-frequency heating coil is connected to a heating power supply. The die head is provided with a die hole.

[0009] As a further solution of the present invention, three wire expanding rollers are installed in a group on the wire expanding bracket. Both ends of the wire expanding roller shaft of the wire expanding roller are rotatably installed in the shaft holes of the wire expanding bracket. The wire expanding bracket is arranged in a triangular shape. A driving shaft is connected to the middle of the wire expanding bracket. The driving shaft is fixedly connected to the wire expanding bracket. The driving shaft is connected to a wire expanding motor, and the wire expanding motor is installed on the stretching substrate.

[0010] As a further solution of the present invention, two groups of wire expanding rollers are installed on the stretching substrate. The two groups of wire expanding rollers are distributed on both sides of the upper part of the stretching substrate. Sprockets are installed on the driving shafts of the two groups of wire expanding rollers. The sprockets are connected to the sprocket on the motor shaft of the wire expanding motor through a transmission chain.

[0011] As a further solution of the present invention, several stretching rollers are installed at the lower part of the stretching assembly. The wheel shafts of the stretching rollers are installed on the stretching wheel seats. The stretching wheel seats are fixed to the tops of the telescopic rods. The bottom of the telescopic rod passes through the through hole on the cylinder sleeve and then is connected to a piston. The piston is connected to a crank connecting rod.

[0012] As a further solution of the present invention, the crank connecting rod is arranged in the driving cylinder. The driving cylinder is fixedly connected to the cylinder sleeve. The driving cylinder is fixed on the stretching substrate. The crank connecting rod is connected to a driving motor.

[0013] As a further solution of the present invention, wire expanding grooves are provided on the wire expanding rollers.

[0014] As a further solution of the present invention, a spiral wire guiding groove is provided on the traction wheel. The copper wire is wound around the traction wheel and connected to a traction motor.

[0015] As a further solution of the present invention, the copper wire winding roller is connected to a winding motor.

[0016] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0017] For the copper wire stretching device of the present invention, the copper wire sequentially passes through the copper wire unwinding roller, the variable diameter die base, the stretching assembly, the traction wheel and the copper wire winding roller. The heating cylinder in the variable diameter die base is used for heating and the die head is used for variable diameter stretching. The rotating wire expanding rollers and several stretching rollers that alternately rise and fall are used to stretch the copper wire together, stretching the copper wire and making the diameter of the copper wire thinner. The copper wire stretching is efficient and convenient.

[0018] To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the drawings and specific embodiments. Description of the Drawings

[0019] Figure 1 It is a structural schematic diagram of a copper wire stretching device provided by the present invention.

[0020] Figure 2Schematic structural diagram of a variable-diameter die holder in a copper wire stretching device provided by the present invention.

[0021] Figure 3 Schematic structural diagram of a stretching assembly in a copper wire stretching device provided by the present invention.

[0022] Figure 4 Schematic structural diagram of a wire expanding roller in a copper wire stretching device provided by the present invention.

[0023] Figure 5 Schematic structural diagram of a wire expanding groove in a copper wire stretching device provided by the present invention.

[0024] Figure 6 Schematic structural diagram of a traction wheel in a copper wire stretching device provided by the present invention.

[0025] Reference numerals: 1 - frame, 2 - copper wire unwinding roller, 3 - unwinding motor, 4 - variable-diameter die holder, 5 - heating cylinder, 6 - high-frequency heating coil, 7 - heating power supply, 8 - die head, 9 - die hole, 10 - stretching assembly, 11 - stretching substrate, 12 - stretching roller, 13 - axle, 14 - stretching wheel seat, 15 - telescopic rod, 16 - cylinder sleeve, 17 - piston, 18 - crank connecting rod, 19 - driving cylinder, 20 - driving motor, 21 - wire expanding roller, 22 - wire expanding shaft, 23 - wire expanding support, 24 - wire expanding groove, 25 - driving shaft, 26 - sprocket, 27 - transmission chain, 28 - wire expanding motor, 29 - traction wheel, 30 - traction motor, 31 - wire guiding groove, 32 - copper wire winding roller, 33 - winding motor. Detailed implementation manners

[0026] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0027] The technical solutions of the present invention will be further described below with reference to the drawings and specific embodiments.

[0028] See Figure 1 As shown, a copper wire stretching device includes a frame 1, on which a copper wire unwinding roller 2, a variable-diameter die holder 4, a stretching assembly 10, a traction wheel 29, and a copper wire winding roller 32 are sequentially arranged. Among them, one end of the copper wire unwinding roller 2 is connected to an unwinding motor 3. Driven by the unwinding motor 3, the copper wire unwinding roller 2 rotates to facilitate the unwinding of the copper wire to be stretched wound thereon; the variable-diameter die holder 4 is fixed on the frame 1, and the variable-diameter die holder 4 is located between the copper wire unwinding roller 2 and the stretching assembly 10. See Figure 2As shown, a heating cylinder 5 and a die head 8 are provided inside the reducing die base 4. The heating cylinder 5 and the die head 8 are arranged on the same axis. A high-frequency heating coil 6 is installed inside the heating cylinder 5, and the high-frequency heating coil 6 is connected to a heating power supply 7. A die hole 9 for reducing the diameter and stretching the copper wire is provided inside the die head 8.

[0029] In an embodiment of the present invention, the copper wire unrolled from the copper wire unwinding roller 2 passes through the heating cylinder 5 and exits from inside the die head 8. When passing through the heating cylinder 5, it is heated by the high-frequency heating coil 6. The high-frequency heating coil 6 is powered on, and a strong magnetic flux with a momentary change in polarity is generated inside the high-frequency heating coil 6. The heated object copper wire passing through is placed inside the high-frequency heating coil 6, and the magnetic flux will penetrate the entire copper wire. In the direction opposite to the heating current inside the copper wire, a corresponding large eddy current will be generated. Among them, the heating power supply 7 for induction heating is an alternating current with low voltage and large current. The heated copper wire enters the die hole 9 of the die head 8 and is reduced in diameter and stretched into a copper wire with a smaller diameter.

[0030] See Figure 1 and Figure 3 As shown, the stretching assembly 10 includes a stretching substrate 11, stretching rollers 12 and a wire expanding roller 21. Among them, the stretching substrate 11 is vertically installed on the frame 1, and a wire expanding roller 21 is provided on the upper part of the stretching substrate 11. In an embodiment of the present invention, preferably, see Figure 4 As shown, three wire expanding rollers 21 are installed in a group on the wire expanding support 23. Both ends of the wire expanding roller shaft 22 of the wire expanding roller 21 are rotatably installed in the shaft holes of the wire expanding support 23. The wire expanding support 23 is arranged in a triangular shape. The middle part of the wire expanding support 23 is connected to a driving shaft 25. The driving shaft 25 is fixedly connected to the wire expanding support 23. The driving shaft 25 is connected to a wire expanding motor 28. The wire expanding motor 28 is installed on the stretching substrate 11. In an embodiment of the present invention, two groups of wire expanding rollers 21 are installed on the stretching substrate 11. The two groups of wire expanding rollers 21 are distributed on both sides of the upper part of the stretching substrate 11. Sprockets 26 are installed on the driving shafts 25 of the two groups of wire expanding rollers 21. The sprockets 26 are connected to the sprockets 26 on the motor shaft of the wire expanding motor 28 through a transmission chain 27.

[0031] See Figure 1 and Figure 3 As shown, a number of stretching rollers 12 are installed at the lower part of the stretching assembly 10. The wheel shaft 13 of the stretching roller 12 is installed on the stretching wheel seat 14. The stretching wheel seat 14 is fixed to the top of the telescopic rod 15. The bottom of the telescopic rod 15 passes through the through hole on the cylinder sleeve 16 and then connects to the piston 17. The piston 17 is connected to the crank connecting rod 18. The crank connecting rod 18 is arranged inside the driving cylinder 19. The driving cylinder 19 is fixed on the stretching substrate 11. The crank connecting rod 18 is connected to the driving motor 20.

[0032] In an embodiment of the present invention, the driving motor 20 drives the crank connecting rod 18 to rotate. The crank connecting rod 18 drives the piston 17, the telescopic rod 15, and the stretching wheel seat 14 to move up and down along the cylinder liner 16, thereby driving a plurality of stretching rollers 12 to move up and down alternately.

[0033] When stretching the copper wire after the die head 8 is reduced in diameter, the copper wire output from the die hole 9 is wound around a set of wire expanding rollers 21 on the upper part of the stretching substrate 11, then alternately wound around one side of a plurality of stretching rollers 12, wound around another set of wire expanding rollers 21 on the upper part of the stretching substrate 11, and wound around the traction wheel 29.

[0034] As a preferred embodiment of the present invention, in order to more conveniently stretch the copper wire and prevent the copper wire from slipping, as shown in Figure 5 The wire expanding roller 21 is provided with a wire expanding groove 24. The copper wire is wound in the wire expanding groove 24. Driven by the wire expanding motor 28 and the driving motor 20, the rotating wire expanding roller 21 stretches the copper wire together with the change in diameter and the alternating lifting of a plurality of stretching rollers 12, elongating the copper wire and reducing the diameter of the copper wire.

[0035] As shown in Figure 1 and Figure 6 The traction wheel 29 is provided with a spiral wire guiding groove 31. The copper wire is wound around the traction wheel 29 and connected to the traction motor 30. After being wound around the wire guiding groove 31 on the traction wheel 29, the copper wire is wound on the copper wire winding roller 32. The copper wire winding roller 32 is connected to the winding motor 33. Finally, the winding motor 33 drives the copper wire winding roller 32 to rotate to wind the stretched copper wire.

[0036] The technical principle of the present invention has been described above in combination with specific embodiments, which are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. Those skilled in the art can think of other specific embodiments of the present invention without creative labor, and these embodiments will fall within the protection scope of the present invention.

Claims

1. A copper wire stretching device, comprising a frame (1), characterized in that, A copper wire unwinding roller (2), a variable-diameter die holder (4), a stretching assembly (10), a traction wheel (29), and a copper wire winding roller (32) are sequentially arranged on the frame (1). A heating cylinder (5) and a die head (8) are arranged in the variable-diameter die holder (4). The stretching assembly (10) includes a stretching substrate (11), stretching rollers (12), and a wire expanding roller (21). The wire expanding roller (21) is installed on the upper part of the stretching substrate (11), and the stretching rollers (12) are arranged on the lower part of the stretching substrate (11). The wire expanding rollers (21) are installed in a group of three on a wire expanding support (23). Both ends of the wire expanding shaft (22) of the wire expanding roller (21) are rotatably installed in the shaft holes of the wire expanding support (23). The wire expanding support (23) is arranged in a triangular shape. A driving shaft (25) is connected to the middle of the wire expanding support (23). The driving shaft (25) is fixedly connected to the wire expanding support (23). The driving shaft (25) is connected to a wire expanding motor (28). The wire expanding motor (28) is installed on the stretching substrate (11). Two groups of wire expanding rollers (21) are installed on the stretching substrate (11). The two groups of wire expanding rollers (21) are distributed on both sides of the upper part of the stretching substrate (11). Sprockets (26) are installed on the driving shafts (25) of the two groups of wire expanding rollers (21). The sprockets (26) are connected to the sprockets (26) on the motor shaft of the wire expanding motor (28) through a transmission chain (27). A number of stretching rollers (12) are installed at the lower part of the stretching assembly (10). The axle (13) of the stretching roller (12) is installed on a stretching wheel seat (14). The stretching wheel seat (14) is fixed to the top of a telescopic rod (15). The bottom of the telescopic rod (15) passes through a through hole in a cylinder sleeve (16) and then connects to a piston (17). The piston (17) is connected to a crank connecting rod (18). The crank connecting rod (18) is arranged in a driving cylinder (19). The driving cylinder (19) is fixedly connected to the cylinder sleeve (16). The driving cylinder (19) is fixed to the stretching substrate (11). The crank connecting rod (18) is connected to a driving motor (20).

2. The copper wire stretching device according to claim 1, characterized in that, One end of the copper wire unwinding roller (2) is connected to an unwinding motor (3). The variable-diameter die holder (4) is fixed on the frame (1). The variable-diameter die holder (4) is located between the copper wire unwinding roller (2) and the stretching assembly (10).

3. The copper wire stretching device according to claim 1, characterized in that, The heating cylinder (5) and the die head (8) are arranged on the same axis. A high-frequency heating coil (6) is installed inside the heating cylinder (5). The high-frequency heating coil (6) is connected to a heating power supply (7). A die hole (9) is arranged in the die head (8).

4. The copper wire stretching device according to claim 1, wherein, The wire expanding roller (21) is provided with a wire expanding groove (24).

5. The copper wire stretching device according to claim 1, characterized in that, The traction wheel (29) is provided with a spiral wire guiding groove (31). The copper wire winds around the traction wheel (29) and is connected to a traction motor (30).

6. The copper wire stretching device according to claim 1, wherein, The copper wire winding roller (32) is connected to a winding motor (33).

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