KR102108041B1 - A long bolt manufacturing method using heading machine - Google Patents

Abstract

The present invention relates to a method for manufacturing a long bolt using a heading machine. According to the present invention, the method for manufacturing a long bolt using a heading machine comprises: a material dropping step; a material supply step; a clamp operation step; a bolt head forming step; a material holding step; and a blade part forming step. According to the present invention, it is possible to form a bolt head and a blade part in one heading machine, thereby reducing costs.

Description

A long bolt manufacturing method using heading machine

The present invention relates to a method for manufacturing a long bolt using a heading machine, and in particular, it is possible to forge and mold both the head and the tip of the long bolt in one heading machine, thereby improving productivity and reducing cost, thereby providing a long bolt at a lower price. It relates to a long bolt manufacturing method using a heading machine that can be.

In general, a metal bolt cuts a wire of a predetermined thickness to a predetermined length and then places the cut material in a forming hole of a fixed die, and a plurality of blow molds provided at the top and bottom of the reciprocating table are in two or three or four steps. It is produced mainly by using a heading machine that allows one end of the material to be formed into a certain type of head by performing a striking process.

However, when performing the above-described two-type machining process (the process of hitting and forming the head of the bolt in the heading machine), the short-length bolt does not have much bending phenomenon in the material body, so there is not much bending correction and the straight tip is drilled. It can be processed or threaded.

However, long bolts with a very long bolt length of about 20 ~ 35cm are subject to bending at the end of the material body cut to a certain length by a heading machine (forging machine). There is a hassle to provide a high-quality long bolt product in which the body forms a straight line only when the bending process of the material body is first performed before the work to be processed into the shape.

As a prior art for performing the bending correction work of the material body as described above, "Long Bolt's bending correction dies" of Korean Patent Registration No. 10-0797198 (2008.01.23. This is called).

The prior art is to form a pressing portion for bending correction of the fixed die and the moving die, respectively, into a thread type having a predetermined twist angle, inserting the material body which is bent between the fixed die and the moving die and slide the moving die to move the slide of the material body. The bent portion is made to be corrected in a straight line by the threaded pressing portion of the twist angle.

Republic of Korea Registered Patent Publication No. 10-0797198 (2008.01.23.announcement) "long bolt bending correction dies"

As described above, conventionally, when manufacturing a long bolt, there is a hassle of bending the material body, so it is always necessary to first perform a calibration operation using a bending die of the prior art.

In addition, when manufacturing a long bolt product in which the cutting edge is formed of a drill-shaped cutting edge, a molding process in which one end of the material body is formed into a head of a predetermined shape is performed in a heading machine, and a drill-type cutting edge is applied to the other end (peak) of the material body. The forming process of forming has a problem in that productivity is significantly reduced and the price of the long bolt is increased due to the need to re-form the head by moving the molded material to a separate forging machine.

Accordingly, the present invention was developed to improve the above problems, and an object of the present invention is to manufacture a bolt head on both ends of a material for a long bolt in one heading machine and manufacture a drill-type blade part when manufacturing a long bolt as a heading machine. It is to provide a method for manufacturing a long bolt using a heading machine that can increase the productivity and cost competitiveness by improving the productivity and cost of the long bolt product by enabling all of them to perform.

In addition, when forming a bolt head on a material for a long bolt, a bending method of the material body for a long bolt does not occur as in the prior art, and thus a method for manufacturing a long bolt using a heading machine that does not require a process of bending and correcting the material body after forming the bolt head is provided. Is doing.

In order to achieve the above object of the present invention, the materials for the long bolts cut so as to be able to perform both bolt head molding and drill-type blade forming in one heading machine are draped over an inclined stepping jaw and flowed to the front end. A material drop supply unit provided with a material drop hole in between; A material supply plate that receives the material when the material receiving portion is reversed, and pushes the material out of the front wall when moving forward; A forceps operating unit installed opposite the material supply plate to lift the material with forceps when advancing the material supply plate, and when the material supply plate is retracted, the lifted material is returned to its original position after the lifted material is introduced into the lower molding part; A reciprocating mold for sequentially hitting one end of the material of the molding part with the first and second hitting molds provided in the elevating mold holder to form a bolt head; A third blow mold that is installed on one side of the material drop supply unit and is installed opposite to the punch support portion that is moved back and forth from both guide portions to form the other end of the material into a drilled blade portion; It is installed opposite to the front end of the holder support, but is installed more protrudingly than the third hitting molds on both sides. By device

A material dropping step of dropping the cut materials in a certain length; A material supply step of receiving the falling materials one by one to the material receiving portion of the material supply plate so that the tongs can catch them; A tongs operation step of grasping the material supplied to the material supply plate with forceps, inserting the material into the molding part, and returning to the original position; A bolt head forming step of sequentially hitting one end of the material input into the molding part with a plurality of molds of the heading machine's reciprocating machine to make a bolt head; A material holding step of holding the inside of the other end of the bolt head molded material with an auxiliary holder; It characterized in that the configuration of a long bolt using a heading machine; forming a blade portion to strike the other end of the material held by a third blow mold to form a drill-type blade.

In the present invention, when manufacturing a long bolt with a material cut to a certain length in a heading machine, bolt head molding and drill-type blade part molding can be performed on both ends of the material in one heading machine, thereby forming bolt head and blade part molding. Compared to the conventional method performed by different mechanical devices, the productivity is excellent and cost reduction can be achieved, thereby increasing the cost competitiveness of long bolt products.

Also, when forming the bolt head, there is no fear of bending the material body for the long bolt as in the prior art, so there is no need to correct the material body after the bolt head molding, so there is an effect of productivity improvement and cost reduction.

1 is a plan view showing the structure of a long bolt manufacturing apparatus using the heading machine of the present invention
Figure 2a to 2d is a side view showing a state in which the long bolt manufacturing apparatus of the present invention is sequentially operated
3A and 3B are plan views showing a process of aligning materials in the present invention.
Figure 4a and 4b is a plan view showing the process of molding after first holding the material end with a holder in the present invention
Figures 5a to 5c is a process of forming the material by the device of the present invention

Hereinafter, preferred technical configurations and operational effects that can effectively achieve the features of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view showing the structure of a long bolt manufacturing apparatus using the heading machine of the present invention, and FIGS. 2A to 2D are side views showing a state in which the long bolt manufacturing apparatus of the present invention is sequentially operated.

In the present invention shown in the present invention, a long bolt manufacturing apparatus using a heading machine includes a material drop supply unit 110, a material supply plate 120, a forceps operation unit 130, a reciprocating unit 150, and a third blow mold 160, It is composed of an auxiliary holder 170.

The material drop supply unit 110 includes a crossing jaw 111 across which both ends of the long bolt material 10 cut into a certain length of about 20 to 30 cm, and a front end and front wall of the crossing jaw 111. It is composed of a material falling hole 113 provided between (112).

In addition, the stepped jaw 111 is inclined at a certain angle so that the multiple materials 10 that are over there flow smoothly, and since the material falling hole 113 is the width through which only one material 10 passes, the materials 10 are one by one. It falls in line.

The material supply plate 120 is a material drop supply unit 110 to repeat the process in which the material receiving unit 121 having the receiving grooves 122 provided at both ends of the front wall 112 slides outward from the bottom of the front wall 112. It is installed on the bottom of the.

The sliding and reciprocating material supply plate 120 receives the material 10 falling from the material falling hole 113 when the material receiving part 121 is retracted to the receiving groove 122, and when moving forward, the material The operation of extruding the material 10 placed on the receiving part 121 to the outside of the front wall 112 is repeated.

In addition, the material receiving portion 121 protrudes on both sides with a predetermined distance at the tip of the material supply plate 120. Therefore, the central portion of the material 10 placed in the receiving groove 122 is placed between both protruding material receiving portions 121 to be able to grasp smoothly with forceps 131.

In addition, between the stepped jaws 111 of the material drop supply unit 110, a vibrating unit 180 through which the horizontal bar 182 of the tip flows is installed, starting from the hinge shaft 181 of the rear end, and the material supply plate 120 ) The upper surface is provided with a protrusion 123 that lifts the horizontal bar 182 of the vibration unit 180 when moving forward and lowers the horizontal bar 182 when moving backward.

The horizontal bar 182 of the vibrating unit 180 that flows up and down by the forward and backward movements of the protruding portion 123 operated along the material supply plate 120 is a stepped jaw of the material drop supply unit 110 as shown in FIG. 2A. Among the materials 10 flowing across 111), the materials 10 close to the material falling hole 113 are shaken while repeating the operation of releasing and releasing them, so that the materials 10 can be smoothly injected in a row.

Tongs operating part 130 is installed opposite to the front of the material supply plate 120, the material receiving part 121 on which the material 10 is placed comes out in front of the front wall 112 and the tongs descend using a pause time After holding the material 10 as shown in Figure 2b (131) and lifted to a certain height as shown in Figure 2c.

In addition, the material 10 caught by the forceps 131 of the forceps operating unit 130 is lifted to a certain height by pushing the material 10 by a predetermined length so that the positions of the materials 10 are always in the correct position. The alignment tool 132 is provided to be operated from side to side.

In addition, when the material receiving part 121 is reversed, the material 10 is put into the molding part 140 located at the front lower part of the front wall 112, so the tongs holding the material 10 at this time ( 131) receives the power of an operating means such as a rotating cam, descends deeper, and then holds the holding material 10 into the lower forming part 140 as shown in FIG. 2D, and then repeats the process of returning to the original position.

The main holder 141 provided with a semi-circular material groove is installed to move in and out on both sides of the left and right sides in order to ask the material 10 inputted into the tongs 131 to the molding unit 140.

The reciprocating table 150 is provided with first and second blow molds (not shown in the drawings) at the top and bottom of the mold holder 151 to be elevated and lowered, and the material 10 supplied to the lower molding part 140 Is fixed to the main holder 141, it is repeated the process of forming the bolt head 11 by sequentially hitting one end (tip) of the material 10, which is a technique widely known in the field of heading machines.

The third blow mold 160 is a pair of molds for forming a drill-type blade portion 12 on the other end of the material 10 on which the bolt head 11 is molded, and the material drop supply unit 110 and forceps are operated. It is installed to face the front of the punch support portion 162 that slides forward and backward from both guide portions 161 installed opposite to one side of the portion 130.

In addition, the auxiliary holder 170 is installed so as to operate with both punch support portions 162 and receive and receive the tension of the opposite spring 172 at the tip of the holder support portion 171 attached to one side thereof, but the third blow mold 160 is provided. It is installed to protrude more than the third hitting mold 160 on both sides so as to hold the material 10 first before striking.

In the long bolt manufacturing apparatus using the heading machine of the present invention, the material drop supply unit 110, the material supply plate 120, the forceps operation unit 130, and the punch support unit 162 for operating the third blow mold 160, The main holder 141, the auxiliary holder 170, and the alignment tool 132 are provided with their respective rotating cams and operating rods on various driven shafts to which power of the main shaft to operate the heading machine's reciprocating unit 150 is transmitted. It may be operated, or it may be operated by separately installing a power source such as a hydraulic cylinder.

As an example, the both punch support portions 162 are shown to be simultaneously punched by receiving power through both operating rods 165 operated by cam protrusions 164 on both sides of the rotating cam 163 in the accompanying drawings, The both punch support portions 162 may be operated in a slide manner under the power of a hydraulic cylinder.

The process of manufacturing the long bolt by the long bolt manufacturing apparatus using the heading machine of the present invention is as follows.

<Phase 1> Material fall stage

The material dropping step is a step in which the material 10 for long bolts formed by cutting an iron wire to a predetermined length of about 20 to 30 cm is lined up through the material dropping hole 113 of the material drop supply unit 110.

That is, according to the present invention, a plurality of long bolt materials 10 are provided on the inclined strut 111 of the material drop supply unit 110 as shown in FIG. 2A so that the long bolt materials 10 can smoothly flow toward the tip. Since both ends are spread, the materials 10 flow smoothly toward the front wall 112, and the material falling hole 113 is provided between the tip of the stepping jaw 111 and the front wall 112, so that the material 10 ) Are lined through the material falling hole 113 to fall.

Here, the step of dropping the material includes a vibration step of shaking the stacked materials 10 by having both ends spread over the inclined stepped jaws 111 of the material drop supply unit 110.

Since the vibrating step shakes and blurs the various materials 10 stacked immediately before reaching the material falling hole 113 among the materials 10 hanging at both ends of the step jaw 111 of the material drop supply unit 110, the material (10) They are separated from each other and are lined one by one to enter the material falling hole 113 and fall.

<2nd stage> Material supply stage

The material supplying step is a step of receiving one by one of the material receiving portions 121 of the material supplying plate 120 sliding the front and rear materials 10 that are lined up in a row so that the forceps 131 in the front can catch them. .

That is, when the material receiving portion 121 of the material supply plate 120 is retracted under the front wall 112 as shown in FIG. 2D, the receiving groove 122 coincides with the material falling hole 113, so that the receiving groove 122 When the falling material (10) is fitted with one, thereafter, when the material receiving portion (121) is advanced together with the material supply plate (120) as shown in FIG. 2A, the material (10) placed in the receiving groove (122) is the front wall (112) As it comes forward, it is supplied.

<3rd stage> Tongs operation stage

2b to 2d, the forceps operation step grabs the material 10 placed on the material receiving part 121 by the forceps 131 by advancing the material supply plate 120, lifts it up to a certain height, and then descends again. It is a step of putting the material 10 into the molding part 140 and then returning the forceps 131 to the initial position.

That is, after lifting the material 10 to the tongs 131 as shown in FIG. 2C, the material supply plate 120 is reversed as shown in FIG. 2D, so that the material receiving part 121 enters below the front wall 112, and thus the front wall ( The passage to the forming part 140 in the lower front part of 112 is opened.

Therefore, at this time, the tongs 131 holding the material 10 can be lowered deeply under the power of an operating means such as a rotating cam, and the material 10 can be introduced into the lower molding part 140, and then the tongs 131 It is returned to the original position and placed in a preparation process for catching the supplied material 10.

Here, when performing the process of lifting the first material 10 to a certain height with the forceps 131 in the forceps operation step, the position of the material 10 caught by the forceps 131 may be slightly different.

Therefore, the operation step of the tongs is a material position alignment step of aligning the position so that one end of the materials 10 is constantly placed at a constant position by pushing one end of the material 10 held by the tongs 131 into the alignment tool 140 at all times. It includes.

When the material position alignment step is performed, the other end of the material 10 that is pushed back is constantly placed between the third hitting molds 160 on both sides, so that the molding of the drill-type blade portion 12 can be accurately performed at a constant position.

<Step 4> Bolt head forming step

In the bolt head forming step, a plurality of first and second blow molds vertically installed at the mold holder 151 in front of the reciprocating head 150 of the heading machine at one end of the material 10 introduced into the forming part 140 vertically. It is a step of making a bolt head 11 by sequentially hitting it while ascending.

A heading machine in which two striking molds are installed in the mold holder 151 of the reciprocating plate 150 for forming the bolt head 11 includes a first striking mold and a first striking mold whenever the reciprocating machine 150 reciprocates twice. 2 The blow mold alternately strikes to form the bolt head (11).

In addition, in the heading machine in which three blow molds are installed in the mold holder 151, the first to third blow molds 160 sequentially hit the bolt head 11 every time the shuttle 150 reciprocates three times. As a molding, since it is widely known in the field of heading machines, detailed description will be omitted.

<Step 5> Material holding step

The material holding step is a step of first holding the material 10 rolled into the forming part 140 before the bolt head forming with the main holder 141, and when the forming of the bolt head 11 is completed, the end portion of the material 10 And holding the material 10 with the auxiliary holder 170 before striking the third blow mold 160.

Before the molding of the bolt head 11, the material 10 injected into the molding part 140 is hit by the main head 141 on both sides of the material 10, and hitting the bolt head 11 When molding, the material exposed to the back of the main holder 141 is not subjected to a shock due to a blow at all, so a bending phenomenon does not occur in the material body as in the prior art, so a process for bending correction is not required.

And, when the position of the material 10 is aligned as shown in Figure 3b, the auxiliary holder 170 is in a more protruding state than the third blow mold 160, the holder support 171 to receive the tension of the spring 172 Installed in

Therefore, when the bolt head forming is completed, both the cam protrusions 164 on both sides of the rotating cam 163 operate the operation rods 165, as shown in FIG. 4A, so that both punch supports 162 are advanced toward the other end of the material 10. As the holder support portion 171 provided on one side of the punch support portion 162 is advanced together, the auxiliary holder 170 protruding more than the third hitting mold 160 compresses the spring 172 and compresses the material 10 with its tension. It is to hold strongly.

<Step 6> Step of forming the blade

In the blade forming step, when the auxiliary holder 170 first grasps and fixes the other end of the material 10, the third blow mold 160 strikes and drills the end of the material 10 as shown in FIG. 4B. This is the step to make the mold blade part (12).

When molding of the drill-type blade portion 12 at the end of the material 10 is completed, both punch support portions 162 are immediately retracted by a return means such as a return spring not shown in the drawing, so the third blow mold 160 is also provided. The reverse, the auxiliary holder 170 is also reversed, and at this time, the main holder 141 also releases the material 10, so the material 10 is dropped and discharged to the lower outlet.

In addition, since the auxiliary holder 170 is advanced again under the tension of the spring 172 and placed in a more protruding state than the third hitting mold 160, the material 10 before the operation of the third hitting mold 160 again It becomes a state that can hold first.

As described above, the present invention can supply both the material for the long bolt and the forming of the bolt head 11 and the forming of the drill-type blade part 12 in one heading machine during the cycle process in which the reciprocating table is reciprocated in plural for forming the bolt head. Compared to the conventional method in which the bolt head 11 molding and the drill-type blade portion 12 are formed in different mechanical devices, productivity can be more than doubled, so the effect of cost reduction is very large.

And when forming the bolt head 11, the main holder 141 shown in FIG. 2A blows the bolt head 11 in a state where the bottom end of the head 10 of the material 10 is strongly held at both sides as shown in FIG. 5B. Since the material portion exposed to the back of the main holder 141 is not subjected to any impact load at the time of blow molding, there is no bending phenomenon of the material body for long bolts as in the prior art, thereby bending the material body after forming the bolt head Since there is no need for a calibration process, it also has the effect of improving productivity.

10: material 11: bolt head
12: drill-type blade portion 110: material drop supply unit
111: cross jaw 112: front wall
113: material falling hole 120: material supply plate
121: material receiving portion 123: stone
130: tongs operation unit 131: tongs
132: alignment tool 140: forming part
150: shuttle 151: mold holder
160: third blow mold 161: guide portion
162: punch support 163: rotating cam
164: cam projection 165: working rod
170: auxiliary holder 171: holder support
172: spring 180: vibration unit
181: hinge axis 182: horizontal bar

Claims (3)

In the long bolt manufacturing method using a heading machine,
A material dropping step in which the materials 10 cut to a certain length are lined up through the material dropping hole 113 of the material drop supply unit 110;
A material supply step of receiving one material 10 from which the material supply plate 120 moved back and forth falls to the material receiving part 121 and extruding it forward;
The tongs 131 are used to grasp and lift the material 10 extruded forward, and when the material receiving part 121 is retracted, descend again to insert the material 10 into the forming unit 140 and return to the original position. step;
A bolt head forming step of sequentially hitting one end of the material 10 introduced into the molding part 140 with a plurality of molds installed on the reciprocating head 150 of the heading machine;
Before forming the bolt head, hold the material (10) rolled into the main holder (141), immediately after forming the bolt head (11), drill-type blade part (12) inside the end part of the material (10) before molding Holding the auxiliary holder 170, and when molding is completed, the material holding step of dropping the material 10 to drop;
Blade forming step of hitting the end of the material (10) caught by the auxiliary holder (170) with a third blow mold (160) into a drill-type blade part (12); sequentially in one cycle process in one heading machine Let it be done
The material falling step,
The material is obtained by lifting or lowering the horizontal bar 182 of the front end of the vibrating unit 180 flowing from the hinge shaft 181 as a starting point to the protruding portion 123 of the material supplying plate 120 before and after the material supplying plate 120. Including the vibration step of applying vibration to the material (10) across both locking jaws 111 of the drop supply unit (110)
A method of manufacturing a long bolt using a heading machine, characterized in that the materials (10) are lined up smoothly with the material falling hole (113).
delete According to claim 1,
The operation step of the forceps,
The position of the material so that the material 10 is fixedly pushed to the right position by pushing one end of the lifted material 10 to the alignment tool 140 that is operated by the left and right so that the material 10 is placed in the fixed position. Long bolt manufacturing method using a heading machine, characterized in that it comprises an alignment step.

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