KR0162518B1 - Wire cutting machine of forging - Google Patents

Abstract

The present invention relates to a cutting device for cutting the wire in a forging machine, such as a heading machine, the conventional cutting device is a cutting force is rough and at a right angle because the cutting blade is forcibly pushed from the back of the wire while the blade and the forceps are operated together. Due to not being cut, there is a problem of excessive defects and poor quality, and the operation between operating the cutting blade and the forceps is operated by hitting the guide plate at a right angle, so that the friction noise is considerably large, which causes severe noise pollution in the workplace. have.

Accordingly, the present invention forms the surface of the steel wire entry hole 13 and the surface of the forming hole 12 of the die 11, and then hits the blow pin 33 actuated by the lever 30 on one side of the steel wire entry hole 13. It is installed in parallel, the first operation period for moving the insertion hole 51 of the cutting knife 50, which is extended to the tip on the one side wall of the main body 10 from the position of the steel wire entry hole 13 to the strike pin 33 position ( 40 and a second operation portion 40a for moving the material inserting portion 62 of the tongs 60 spoken at the tip to the molding hole 12 at the position of the striking pin 33, wherein the first, The second operation sections are operated in series by the first and second cam plates 80 and 80a installed in a straight line at the rear so that the cutting lines are clean while cutting the wire at right angles, thereby improving productivity and quality. Low noise during cutting is a great environmental improvement effect in the workplace.

Description

Wire cutting device of forging machine

1 is a plan view of a main portion of the cutting device of the present invention, partially illustrated in cross section.

Figure 2 (a) (b) (c) (d) is a principal cross-sectional view illustrating the operating state of the blade and the forceps of the present invention.

3 is a side view of the forceps used in the present invention.

* Explanation of symbols for main parts of the drawings

11 die 12 molding machine

20: wire 21: material

30: lever 31,41,41a: spring

33: Blow pin 40,40a: Between the first and second operation

50: cutting knife 51: inserting ball

60: forceps 62: material insertion unit

70: axis 71: bevel gear

80,80a: first and second cam plate 90: rotating plate

91: turning

The present invention is to form a forging machine such as a heading machine for hitting the fastener parts such as rivats, bolts, screws, lighters nozzles, reel shafts for electronic products, etc. to cut the wires entering a predetermined length more effectively The present invention relates to a forging wire cutting device that can improve the quality of the product while reducing the noise generated when cutting the wire while improving the quality of the product.

In general, forging machines such as heading machines are gradually rolled up into the machine body while the wires wound in rolls are slowly released, cut them into materials of a predetermined length with a cutting knife, and then hit various materials by hitting the materials cut by the hitting mold of the shuttle. It refers to a machine for molding, such a machine device is a patent application No. 64547 (Notification No. 93-4506), No. 64548 (Notification No. 93-4505), No. 64549 (Notification No. 93- 4504) and Utility Model Registration No. 22242 (Notice No. 82-1547).

And the conventional forging machine is a configuration for cutting the iron wire entering the machine body as the cutting blade and tongs are mainly moved forward and backward together by the guide plate formed with the cam groove at the rear of the iron wire entry hole, the cutting blade is predetermined outside the wire entry hole The steel wire protruding by the length is pushed and cut from behind, and the tongs are installed to hold the wire in front of the wire cut by the blade. The guide plate is configured to reciprocate in a straight line by a crank rod connected to the rotary gear. have.

However, the above-described conventional wire cutting device is operated by moving the blade and the forceps at the same time and the cutting surface is rough because the cutting force is pushed forward to the wire in the state that the blade is in contact with only the rear of the wire is rough, the moment of cutting Since the tip is slightly inclined, the front tongs that hold the iron wire are pushed up, and when the tongs are cut while being opened, the cutting plane of the iron wire is cut at an inclined state rather than at a right angle, causing various problems.

In other words, if the cutting surface of the material is inclined as described above, the impact between the inclined cutting surface and the inclined cutting surface is broken by the unbalanced force, so that the molding work of the product must be stopped from time to time to replace it. In addition, the cost rises, and the blow molding of the cut material is a non-uniform form of the molded product, which is a major factor that causes the commodity value to fall.

In the conventional wire cutting device, the friction between the cutting blade and the clamping force fitted to the cam groove of the guide plate is reciprocated in a direction perpendicular to the direction of movement of the guide plate when the guide plate is linearly reciprocated by the crank rod. The noise is generated significantly, and accordingly there is a serious problem that causes workers' hearing impairment due to severe noise pollution in the workplace.

Accordingly, an object of the present invention is to improve the quality and productivity of blow molded products by operating the cutting blades and tongs individually with a slight time difference so that the cutting surface of the wire is cut very cleanly and at right angles. It is to provide a wire cutting device of the forging machine.

Another object of the present invention is to provide a forging wire cutting device that can reduce the mechanical noise during cutting work as possible to improve the working environment conditions of workers and to reduce cost by reducing the tolerance of the product.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings as a preferred embodiment capable of effectively achieving the above object of the present invention.

1 is a plan view illustrating a part of the cutting iron wire cutting device according to the present invention is cut, the present invention is formed by cutting the steel wire 20 continuously entered into the machine body 10 through the wire entry hole 13 In constructing the cutting device for the wire to be conveyed to (12), the wire entry hole 13 surface is formed stepped with the surface of the molding hole 12 of the die 11 and then the wire entry hole 13 on the stepped portion On one side installs the blow pin 33 to be operated by the lever 30 flowing around the hinge pin (32).

At this time, it is preferable that the lever 30 is returned to its original position by the spring 31 after the operation, and the striking pin 33 is connected to one end of the lever 30 so as to return together with the lever 30 after the striking operation. In addition to this method, the lever 30 is returned to the spring 31 and the striking pin 33, and then a separate gripping means is installed on the striking pin 33. After the striking operation, the striking pin 33 is connected to the gripping means. It may be made to return.

In addition, a pair of first and second operation sections 40 and 40a are installed on one side wall of the main body 10 so as to enter and exit toward the die 11 while being supported by springs 41 and 41a, respectively. The cutting operation in the state in contact with the surface of the iron wire entry hole 13 by connecting a cutting knife 50, the insertion hole 51 having the same size as the wire entry hole 13 is formed in the first operation period 40 is located The insertion hole 51 of the knife 50 is installed to be moved to the position of the striking pin 33 in the wire entry hole (13).

In addition, the second operation interval 40a on the outside as shown in Figure 3 by the spring 63, the upper and lower claws 61 is always connected to the forceps 60 which is maintained in the collapsed state inserting portion of the claws 61 ( 62 is installed so as to move from the position of the striking pin 33 to the molding hole 12 of the die 11.

The first and second operation periods 40 and 40a may be connected to the main shaft 14 and the bevel gear 71 by the rear end of the shaft 70. The rotating plate 90 is provided with a pair of first and second cam plates 80 and 80a and a lever operating protrusion 91 for operating the second operation sections 40 and 40a to a predetermined position. It is installed on (70).

In the drawing, reference numeral 52 denotes a cutting mold installed on the cutting knife 50, 18 denotes a cutting mold installed on the die 11, and 21 denotes a material obtained by cutting the wire 20 to a predetermined length. (16) is a carriage reciprocating by the crankshaft (15) and (17) is a blow mold provided in the carriage (16).

The present invention formed as described above has a predetermined length of the wire 20 through the wire entry hole 13 in a state where the insertion hole 51 of the cutting knife 50 coincides with the wire entry hole 13 as shown in FIG. When entering as much as the tip of the iron wire 20 is fitted into the insertion hole 51 of the cutting knife 50, in this way the tip of the iron wire 20 is inserted into the insertion hole 51 of the cutting knife 50 as soon as the shaft 70 While rotating the first cam plate 80 is hitting the first operation section 40 to allow the first operation section 40 to enter the machine body 10 by a predetermined length while compressing the spring 41.

Then, the cutting knife 50 connected to the first operation section 40 is momentarily advanced to cut the wire 20 inserted in the insertion hole 51 from the wire entry hole 13, as shown in FIG. 2 (b). The cut material 21 is moved to the front of the hitting pin 33.

Then, when the protrusion 91 of the rotating plate 90 installed and rotated at the end of the shaft 70 pushes one end of the lever 30, the other end of the lever 30 compresses the spring 31 by the corresponding hinge pin of the center. Advance to the center (32) to push the striking pin 33 by a predetermined length as shown in FIG.

Then, when the striking pin 33 is pushed by the lever 30 as described above, the tip of the striking pin 33 is pushed into the insertion hole 51 by pushing the material 21 is inserted into the insertion hole 51 of the cutting knife 50 Since the material insertion portion 62 of the claw 61 is located on the surface of the insertion hole 51 of the cutting knife 50, it is removed from the insertion hole 51 of the cutting knife 50 by the blow pin 33. The raw material 21 is in a state of being immediately fitted into the raw material inserting portion 62 of the claw 61 as shown in FIG.

At this time, as described above, the blow pin 33 completely removes the material 21 from the insertion hole 51 of the cutting knife 50 and inserts it into the material insertion portion 62 of the claw 61 during the first operation. 40 is to maintain the advanced state hit by the first cam plate 80, then the projection 91 of the rotating plate 90 of the lever 30 to operate the blow pin 33 as described above After passing through one end, the other end of the lever 30 is immediately returned to its original position by the spring force of the spring 31, which has been compressed.

Then, the striking pin 33 inserted into the insertion hole 51 of the cutting knife 50 is reversed along the other end of the lever 30 to be reversed, and the striking pin 33 that is reversed as described above is cut of the cutting knife 50. When completely removed from the insertion hole 51, as the first cam plate 80 terminates the hitting state of the first operation section 40, the first operation section 40 is reversed by the holding force of the spring 40, which has also been compressed. Since the insertion hole 51 of the cutting knife 50 connected thereto is also retracted at the position of the striking pin 33 to maintain the same state as the wire entry hole 13 again.

When the raw material 21 cut into the inserting portion of the claw 61 is inserted as described above, the second cam plate 80a strikes the second operation interval 40a so that the second operation interval 40a is the spring 41a. As the compression advances, the forceps 60 connected thereto are also advanced so that the material 21 inserted into the material insertion part 62 of the tip of the tongs 61 as shown in FIG. It moves to the molding hole 12 position.

When the raw material 21 cut as described above is moved to the correct position of the molding hole 12, the carriage 16 is advanced as in a conventional forging machine, and the blow mold 17 is inserted into the insertion part of the claw 61. The material 21 is blown into the molding hole 12 of the die 11 to be molded into a predetermined shape.

As described above, when the blow mold 17 of the carriage 16 hits and molds the material 21, the second cam plate 80a terminates the blow state of the second operation period 40a. Since the operation 40a is also rapidly retracted by the holding force of the spring 40a which has been compressed, it is returned to its original position, so the material inserting portion 62 of the claw 61 connected thereto is also retracted from the molding hole 12 position and again hitting pins. It returns to position (33).

Then, when the wire 20 is inserted into the insertion hole 51 of the cutting knife 50 by the predetermined length through the wire entry hole 13, the process is repeated, that is, between the first operation by the first cam plate 80. As the 40 is advanced, the cutting knife 50 cuts the wire 20 and moves to the position of the striking pin 33 at the same time.

Then, push the raw material 21, the cutting pin 33 is cut from the insertion hole 51 of the cutting knife 50 to be inserted into the inserting portion of the tongs 60, the second cam plate (80a) during the second operation Advance 40a to move the material 21 inserted into the inserting portion of the tongs 60 to the position of the molding hole 12 and then hit the material 21 with the striking mold 17 of the carriage 16. The molding process will be repeated.

Since the present invention cuts the wire wire 20 by the cutting knife 50 in the state in which the wire wire 20 is tightly inserted and supported in the insertion hole 51 of the cutting knife 50, the claws as in the prior art Compared to the method of pushing the wire while cutting the wire while the blade is grounded on the back of the wire, the cutting surface is clean but the cutting surface is cut at a right angle because there is no tilting of the wire that occurs when cutting the wire. The shape of the product to be molded is more uniform, but the quality can be improved, thereby improving the competitiveness.

Since the cutting knife 50 and the tong 60 are operated separately, the cutting knife 50 and the tong 60 can be precisely operated when the cutting knife 50 and the tong 60 are operated. There is a convenient point, such as easy repair, and in particular, the first and second operation periods for operating the cutting knife 50 and the forceps 60 operate in a straight line with the first and second cam plates that are rotated along the moving direction. Since the operation between the blade and the forceps of the conventional blade is to be operated at a right angle to the cam plate, mechanical noise is significantly reduced, thereby improving the working environment.

Claims (3)

The wire that continuously enters the inside of the machine body 10 through the steel wire entry hole 13 of the forging machine in which the blow mold 17 of the carriage 16 is reciprocated to the forming hole 12 of the die 11. In constructing an apparatus for cutting 20, the surface of the steel wire entry hole 13 is formed to be stepped with the surface of the molding hole 12 of the die 11, and then a strike pin (parallel to one side of the steel wire entry hole 13) ( 33) and one end of the lever 30, which is levered around the hinge pin 32 by the rotating plate 90 having the projection 91, is returned to the spring 31 of the striking pin 33. It is connected to the rear end, one side wall of the main body 10 is provided with a pair of first and second operation intervals 40 and 40a, which enter and exit toward the die 11 in a state of being shot with springs 41 and 41a. The blow pin 33 is connected to the cutting knife 50 having the insertion hole 51 corresponding to the iron wire entry hole 13 at the tip of the first operation period 40 to cut the material inserted into the wire entry hole 13. ) Installed to move to the position, and the front end of the second operation (40a) by installing a forceps 60 to keep the upper and lower claws 61 always closed by the spring 63 to shovel the material of the claws 61 When the material 21 in the insertion hole 51 of the cutting knife 50 is inserted into the branch 62 by the striking pin 33, the material 21 is moved to the molding hole 12 of the die 11. And a pair of steps for advancing the first and second operation sections 40 and 40a to a predetermined position with a slight time difference at the rear of the first and second operation sections 40 and 40a. The first and second cam plate (80) (80a) by installing the cutting wire, the cutting pin and the forceps of the forging machine, characterized in that the operation of the forefinger to operate in series. The main shaft (14) of claim 1, wherein the first and second cam plates (80, 80a) for operating the first and second operation sections (40, 40a) and the rotating plate (90) for operating the lever (30). And bevel gears (71) connected to the rotating shaft (70) together to be installed in series to operate the wire cutting device of the forging machine. According to claim 1, wherein the lever 30 and the striking pin 33 is installed in a state separated from each other while the return spring 31 to hit the striking pin 33 to the striking pin 33 and the lever ( 30) the wire cutting device of the forging machine characterized in that the return together.