CN107539823A - A kind of wire-cutting device - Google Patents

Abstract

The invention discloses a wire cutting device, which comprises a workbench, and a wire-feeding mechanism, a guide wheel, a straightening mechanism, a first wire-feeding mechanism, a guide mechanism, and a wire-cutting mechanism arranged sequentially on the workbench along the wire-feeding direction And the blanking mechanism, the pay-off mechanism includes a pay-off reel for placing the whole roll of wire and the first motor to drive the pay-off reel to rotate, the middle part of the pay-off reel is provided with an upwardly extending cylinder; the straightening mechanism includes two straightening plates And at least three guide rollers, the guide rollers are located between the two straightening plates and are divided into upper and lower rows and arranged alternately, the straightening plates are provided with through holes allowing the wire to pass through, and the diameter of the through holes decreases along the wire feeding direction. A wire cutting device of the present invention can effectively remove the curling characteristic left by the wire in the coiled state by setting the wire releasing mechanism and the straightening mechanism, so as to keep it in a straight state, thereby ensuring that the length of the cut wire is uniform, and at the same time the whole The device is easy to operate and can realize automatic production.

Description

A cutting device

technical field

The invention relates to a wire cutting device.

Background technique

In the processing of wire rods, the raw material for making wire rods is whole rolls of wires, which need to be cut to a certain length to make various wire rods. In the past, the cutting work was done manually by the operator. First, the wire was pulled out from the whole roll of raw materials, passed through a perforation fixed on the station, and then the thread end was compared to a certain length of distance on the station, and pulled out. Straight wire, cut the wire from the perforation, thus completing the cutting of a section of wire. For the production of the next wire, the operator needs to repeat the above-mentioned process again, and the work of the operator is heavy, and the speed is slow and the efficiency is low.

In order to solve the above problem, the Chinese Patent Publication No. is CN2496155Y, a wire cutting machine, which includes a motor and a winding frame, wherein the winding frame is fixedly connected to the rotating shaft of the motor, and the winding frame is provided with more than one The hook, the hook portion of the hook faces the direction outside the winding frame. With the above-mentioned components, the motor can drive the winding frame to rotate, the wire is automatically wound onto the hook of the winding frame, and then the wire wound on the winding frame is cut to complete the wire cutting operation. Although this technology can also complete automatic wire cutting, it directly processes the entire coil of wire. Since the entire coil of wire itself is bent, its length is difficult to control due to bending, and the length of the finally cut wire will vary.

Contents of the invention

The purpose of the present invention is to solve the technical problems mentioned above, and to provide a wire cutting device, the length of the cut wires is uniform, the operation is simple, and automatic production can be realized.

The present invention is achieved through the following technical solutions:

A wire cutting device, including a workbench, and a wire-feeding mechanism, a guide wheel, a straightening mechanism, a first wire-feeding mechanism, a guide mechanism, a wire-cutting mechanism, and a blanking mechanism that are sequentially arranged on the workbench along the wire-feeding direction , the pay-off mechanism includes a pay-off reel for placing the entire roll of wire and a first motor to drive the pay-off reel to rotate, the middle part of the pay-off reel is provided with an upwardly extending cylinder; the straightening mechanism includes two Straightening plate and at least three guide rollers, the guide rollers are located between two straightening plates and are divided into upper and lower two rows and arranged alternately, the straightening plate is provided with a through hole allowing the wire to pass through, the diameter of the through hole along The feeding direction decreases successively.

Further, the guide roller is provided with an annular wire groove, and the width of the wire groove matches the diameter of the wire.

Further, the first wire feeding mechanism includes a first pair of wire feeding wheels, and a second motor is connected to the first pair of wire feeding wheels.

Further, a second wire feeding mechanism is provided between the wire trimming mechanism and the blanking mechanism, and the second wire feeding mechanism includes a second pair of wire feeding wheels, and a third pair of wire feeding wheels is connected to the second pair of wire feeding wheels. motor.

Further, the guide mechanism includes a guide block and a guide tube, the guide block is provided with a guide hole communicating with the guide tube, and the diameter of the guide hole decreases sequentially along the wire feeding direction.

The beneficial effect is: compared with the prior art, a wire cutting device can effectively remove the curl characteristic left by the wire in the wire coil state by setting the wire unwinding mechanism and the straightening mechanism, so as to keep it in a straight state, thereby ensuring cutting The length of the outgoing wire is uniform, and the whole device is easy to operate and can realize automatic production.

Description of drawings

Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail, wherein:

Fig. 1 is the structural representation of wire cutting device of the present invention;

Fig. 2 is the structural representation of thread trimming mechanism of the present invention;

Fig. 3 is a structural schematic diagram of the brake assembly in the pay-off mechanism of the present invention.

detailed description

As shown in Figure 1, a wire cutting device includes a workbench, and a wire-feeding mechanism, a wire pulley 2, a straightening mechanism, a first wire-feeding mechanism 4, and a guide mechanism that are sequentially arranged on the workbench along the wire-feeding direction 5. Thread trimming mechanism 6 and blanking mechanism 8, blanking mechanism 8 is used to place the wire after cutting, its cross section becomes V shape, can make the wire after cutting neatly put like this, described wire releasing mechanism includes for A pay-off reel 11 for placing the whole roll of wire and a first motor 12 for driving the pay-off reel 11 to rotate, the middle part of the pay-off reel 11 is provided with an upwardly extending cylinder 13; the straightening mechanism includes two straightening plates 31 and At least three guide rollers 32, the guide rollers 32 are located between two straightening plates 31 and are divided into two rows up and down to be staggeredly arranged, the straightening plates 31 are provided with through holes allowing wires to pass through, the diameter of the through holes Decrease in turn along the wire feeding direction. The existing wire cutting machine directly sends the entire roll of wire to the wire trimming mechanism 6 through the wire wheel 2, and when the entire roll of wire changes between its original coiled state and straightened state, the speed of unwinding fluctuates from fast to slow. , there will be a small curl state, which will affect its cutting accuracy. The pay-off mechanism provided in this scheme can rotate the whole roll of wire and realize the uniform speed of pay-off, and then achieve the effect of large arc transition shown in Figure 1. Further, the cylinder 13 in the middle of the pay-off reel 11 can be well Pulls on the wire to further remove its original crimp. This solution can effectively remove the curling characteristics left by the wire in the coil state by setting the wire-releasing mechanism and the straightening mechanism, so as to keep it in a straight state, thereby ensuring that the length of the cut wire is uniform. At the same time, the whole device is easy to operate and can realize automation. Production.

Further, the guide roller 32 is provided with an annular wire groove, and the width of the wire groove matches the diameter of the wire. The circular wire groove can limit the movement of the wire in the left and right directions and play a straightening role.

Further, the first wire feeding mechanism 4 includes a first pair of wire feeding wheels, and a second motor is connected to the first pair of wire feeding wheels.

Further, a second wire feeding mechanism 7 is provided between the wire trimming mechanism 6 and the blanking mechanism 8, and the second wire feeding mechanism 7 includes a second wire feeding pair of wheels, and the second wire feeding pair of wheels A third motor is connected. The wire cutting mechanism 6 is arranged between the first wire feeding mechanism 4 and the second wire feeding mechanism 7 to ensure that the wire in this section is in a tight state, thereby ensuring its cutting accuracy.

Further, the guide mechanism 5 includes a guide block and a guide tube, the guide block is provided with a guide hole communicating with the guide tube, and the diameter of the guide hole decreases sequentially along the wire feeding direction.

As shown in Figure 2, thread trimming mechanism 6 comprises cylinder 61, first knife rest 62, second knife rest 63, and first knife rest 62 comprises horizontal part and vertical part, and the piston rod of cylinder 61 is connected on the horizontal part, The first cutter 64 is installed on the horizontal part, and the second knife rest 63 becomes V-shaped, and the turning point in the middle of the second knife rest 63 is hinged on the workbench, and one end of the second knife rest 63 is hinged on the vertical part, and the second knife rest 63 is hinged on the workbench. The other end of the frame 63 is hingedly mounted with a second cutter 65 , the workbench is provided with a guide groove for accommodating the second cutter 65 , and the first cutter 64 and the second cutter 65 are oppositely arranged. When working, the cylinder 61 drives the first knife rest 62 to move downward, and the second knife rest 63 also moves upward at the same time, and the first cutter 64 and the second cutter 65 cooperate with each other to cut the wire.

As shown in Figure 3, there is a brake assembly acting on the pay-off reel 11 in the pay-off mechanism, the brake assembly includes a base plate 91, a bracket 92, a brake lever 93 and an electromagnet 94, and the base plate 91 is fixed on the first motor 12 or the working On the platform, the lower end of the bracket 92 is fixedly connected on the base plate 91, the middle part of the brake lever 93 is hinged on the top of the bracket 92, one end of the brake lever 93 is connected with the base plate 91 by a tension spring 95, and the other end of the brake lever 93 is provided with In the braking part, the electromagnet 94 is installed on the bottom plate 91 and is located below the middle part of the brake lever 93 , and the brake lever 93 is provided with an iron sheet 96 that is attracted to the electromagnet 94 . When pay-off starts, the first motor 12 starts, and the electromagnet 94 and the iron plate 96 on the brake lever 93 attract each other, and the first motor 12 drives the pay-off reel 11 to rotate and start to pay off; when the pay-off stops, the first Motor 12 stops working, and electromagnet 94 separates from the iron sheet 96 on the brake lever 93, and tension spring 95 pulls brake lever 93 to make its brake portion crimped on the pay-off reel 11, preventing the pay-off reel 11 from continuing to rotate due to inertia. Cause the wire to come out too long.

The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall fall within the scope of the technical solution of the present invention.

Claims (5)

1. A kind of 1. wire-cutting device, it is characterised in that including workbench, and set gradually on the table along the direction of line sending Payingoff mechanism, guide roller, straightening mechanism, the first wire agency, guiding mechanism, thread cutting mechanism and blanking mechanism, the paying out machine Structure includes the first motor for being used for the draw drum and driving draw drum rotation for placing entire volume wire, is set in the middle part of the draw drum There is the cylinder upwardly extended；The straightening mechanism includes two pieces of straightening plates and at least three deflector rolls, and the deflector roll is rectified positioned at two pieces Between straight panel and it is divided into two rows and alternately sets, the straightening plate is provided with the through hole for allowing wire to pass through, the through hole Diameter is sequentially reduced along line sending direction.
2. 2. a kind of wire-cutting device according to claim 1, it is characterised in that the deflector roll is provided with annular wire casing, described The width of wire casing matches with diameter of wire.
3. 3. a kind of wire-cutting device according to claim 1, it is characterised in that first wire agency includes the first line sending To wheel, first line sending is to being connected with the second motor on wheel.
4. 4. a kind of wire-cutting device according to claim 1, it is characterised in that set between the thread cutting mechanism and blanking mechanism There is the second wire agency, second wire agency includes the second line sending to wheel, and second line sending on wheel to being connected with the 3rd Motor.
5. 5. a kind of wire-cutting device according to claim 1, it is characterised in that the guiding mechanism includes guide pad and guiding Pipe, the guide pad are provided with the pilot hole connected with guide pipe, and the diameter of the pilot hole is sequentially reduced along line sending direction.