KR102012625B1 - Roll forming dies assembly - Google Patents

Abstract

The present invention relates to a rolling dies assembly which is provided with a taper plate locking device comprising: a fixing pin in which a locking pin contact part in an inclined surface shape is formed; a locking pin having an inclination surface coming in contact with the fixing pin to enable the fixing pin to slidably move in a width direction; and a locking pin forward and backward movement device enabling the locking pin to move forward and backward. Accordingly, rolling dies and a taper plate for adjusting the height of the rolling dies can be rapidly and stably fixed to a tool holder. Moreover, the fixing pin forward and backward movement device is controlled to rapidly fix the taper plate and the rolling dies just by enabling the fixing pin to move forward and backward, and thus convenience can be improved.

Description

Rolling Dies Assembly {ROLL FORMING DIES ASSEMBLY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll die assembly mounted on a rolling mill, and more particularly, to a roll die assembly capable of adjusting the protruding height of a roll die in a roll mill using a flat roll die.

Roll forming is a kind of plastic working, and is a processing method of forming by using rolling dies without cutting metal. Rolling can be used to precisely inscribe the shape of the rolling die on the surface of the workpiece.

The rolling dies used for rolling processing can be classified into two types. One is cylindrical dies and the other is rack dies or flat dies.

Cylindrical rolling dies are rolled by placing the workpiece between the rolling dies and rotating the rolling dies while pressing the rolling dies in accordance with the target working dimensions. The cylindrical roll die can be used to continuously roll long round rod-shaped workpieces along the longitudinal direction.

The flat roll die is rolled by placing the workpiece between a pair of opposing roll dies and moving the pair of roll dies to face each other along the longitudinal direction. Flat roll dies can be used to precisely process screws, splines, serrations, and the like.

Rolling machines using cylindrical rolling dies are roll-processed by moving the rolling dies by using a device that presses and moves the rolling dies. However, rolling mills using flat rolling dies have a fixed gap between the rolling dies. Rolling is done. Therefore, in order to adjust the machining dimension or the machining tolerance, the protruding height of the opposing rolling die must be adjusted individually.

Next, the specific structure of the rolling mill using a flat roll die and the method of adjusting the protruding height of a roll die and adjusting a process dimension or a process tolerance are demonstrated.

1 is a conceptual view of a rolling machine using a flat roll die according to the prior art, Figure 2 is a conceptual view of a rolling die assembly mounted on the rolling device of Figure 1, Figure 3 is a conceptual cross-sectional view of the rolling die assembly of Figure 2 to be.

As illustrated in FIG. 1, a conventional rolled die using a flat plate die has a pair of columns 10, a slider bed 20, and a slider bed 20 arranged side by side facing each other. And a slider 30 which is provided to be reciprocated in the longitudinal direction, and the roll die assembly 40 fixed to the slider 30 to reciprocate in the longitudinal direction together with the slider 30.

As shown in FIGS. 2 and 3, the roll die assembly 40 includes a tool holder 41 fixed to the slider 30 and a roll die 42 in the form of a flat plate fixed to the tool holder 41. It is made, including.

A taper plate 43 is provided between the tool holder 41 and the rolling die 42 to adjust the projecting height of the rolling die 42. And the tool holder 41 is provided with an adjusting bolt 44 to move the tapered plate 43 in the longitudinal direction to adjust the protruding height of the rolling die (42).

The rolling die 42 is fixed to the tool holder 41 through fixing devices such as a side clamp 45 and a wedge clamp 46 in a state of being seated on the upper surface of the tapered plate 43.

In the conventional roll die assembly 40, the process of adjusting the protruding height of the roll die 42 to adjust the processing dimension or the processing tolerance of the product is as follows.

First, the bolts of the side clamp 45 and the wedge clamp 46 are unscrewed. The tapered plate 43 is moved by manipulating the adjusting bolt 44 of the rolling die 42 to adjust the height of the protrusion with reference to the ruler 47. When the taper plate 43 is moved, the protruding height of the roll die 42 seated on the upper surface of the taper plate 43 is adjusted.

After adjusting the protruding height of the rolling die 42, the bolts of the side clamp 45 and the wedge clamp 46 are tightened to fix the rolling die 42 to the tool holder 41. Next, test roll the workpiece, measure the O.P.D (over pin diameter) value of the rolled product, and repeat the above process until the machining dimension or machining tolerance reaches the target value based on the measured value.

The adjusting bolt 44 is manufactured very precisely to precisely move the taper plate 43, but even the most precise adjusting bolt has a certain distance so that the engagement part can slide smoothly. Errors are bound to occur. Therefore, the operator should tighten or loosen the adjusting bolt 43 in consideration of the error added or subtracted by the backlash.

As described above, the protrusion height of the rolling die 42 in the conventional rolling die assembly 40 is adjusted through trial and error several times based on the operator's experience, so much time and effort is required for setting to start the production of the product. .

Applicant of the present invention has been proposed to improve the conventional roll die assembly of the Republic of Korea Patent No. 10-1799297 "rolling die assembly" (registered November 14, 2017).

The improved roll die assembly is provided with a pressure fixing means comprising an upper taper plate and an elastic member for pressing the lower taper plate in the direction toward the tool holder and the adjusting bolt, thereby reducing errors caused by backlash of the adjusting bolt. The protruding height of the rolling die can be precisely adjusted.

However, even in the case of the improved roll die assembly, since the pressing force applied to the lower taper plate is changed according to the posture of the rolling die assembly, the lower taper plate may not be brought into close contact with a constant pressing force toward the adjusting bolt. That is, the error due to backlash may not be completely corrected according to the attitude of the roll die assembly.

For example, when horizontally rolling a pair of roll die assemblies up and down, the upper taper plate of the roll dicer assembly disposed in an upside down state is sag downward due to its own weight.

If the upper taper plate sags downward beyond the pressing force of the pressure fixing means, the backlash caused by the adjusting bolt is not completely removed, thereby making it impossible to precise roll processing.

Of course, when the pressing force of the pressure fixing means which is an elastic member is increased, the upper taper plate and the rolling die coupled thereto may be fixed with a strong force so as not to sag downward.

However, when the pressing force of the pressure fixing means is increased, the friction force between the lower taper plate and the upper taper plate is increased, so that it does not slip smoothly. In order to solve this problem, the motor for the adjusting bolt is increased by increasing the output of the adjusting bolt motor. There is a problem that it is enlarged.

Republic of Korea Patent Publication No. 2002-0037014 "Dice combination of screw threader" (published May 17, 2002) Republic of Korea Patent Publication No. 10-1799297 "rolling die assembly" (registered November 14, 2017)

The present invention has been made to solve the problems of the prior art as described above, and after adjusting the protruding height of the rolling die, the rolling die is firmly fixed to the tool holder to backlash regardless of the posture of the rolling die assembly. The present invention proposes a roll die assembly in which an error due to the present invention is accurately corrected.

In particular, it is intended to improve the method of fixing the rolling die to the tool holder to fix the rolling die to the tool holder with a simple operation without complicated operation, thereby increasing the convenience of operation and making rapid operation.

In order to solve the above problems, the present invention provides a roll die assembly for reciprocating in a direction opposite to each other provided in a pair of a rolling machine: provided in a form extending in the longitudinal direction to reciprocate in the longitudinal direction The tool holder body is provided to be fixed to the slider of the rolling mill, the fixing pin receiving portion is formed in the thickness direction and the locking pin through hole communicating with the fixing pin receiving portion in the width direction is formed through, the longitudinal direction of the tool holder body A tool holder comprising first and second guide covers respectively provided at one end and the other end; One side of the thickness direction is provided to advance in the longitudinal direction while being supported by the tool holder body, the first inclined surface is formed on the other side in the thickness direction, of the long hole shape extending in the longitudinal direction at a position corresponding to the receiving pin receiving portion A lower taper plate formed by passing through the fixing pin long hole in the thickness direction; A second inclined surface inclined to correspond to the first inclined surface of the lower tapered plate is formed at one side in the thickness direction, and the second inclined surface is disposed at the other side in the thickness direction of the lower tapered plate such that the second inclined surface is in contact with the first inclined surface. A fixing pin insertion portion consisting of a head receiving portion recessed toward the other side in the thickness direction on one side and a fixing pin through hole penetrating from the head receiving portion to the thickness direction on one side is formed to communicate with the fixing pin long hole, and the lengthwise direction of the lower taper plate. An upper taper plate which is guided to the first and second guide covers to move in the thickness direction when advancing; Roll die which is provided to move in the thickness direction with the upper tapered plate; Rolling die fixing means for fixing the rolling die to the upper taper plate; An adjusting bolt screwed to the lower taper plate to advance the lower taper plate in a longitudinal direction; A motor for adjusting bolt for rotating the adjusting bolt; It is provided to advance through the fixing pin long hole in the thickness direction, the engaging head is formed at one end is inserted into the fixing pin insertion portion to be caught by the head receiving portion is inserted into the fixing pin receiving portion in the other end Fixing pins having a locking pin engaging portion having a third inclined surface inclined toward the locking pin through hole toward the locking pin, and provided to retreat in the width direction through the locking pin through hole, but at one end of the locking pin engaging portion. A taper plate locking device including a locking pin which is insertable and includes a locking pin coupling portion having an inclined fourth inclined surface corresponding to the third slope, and a lock pin retracting device for retracting the locking pin in a width direction; Characterized in that comprises a.

In the lock pin through-hole is provided with a locking pin guide bushing in the form of a hollow tube extending in the width direction to guide the retreat of the locking pin, hollow pin shape extending in the thickness direction in the fixing pin receiving portion And a fixing pin guide bushing in which a fixing pin coupling hole for inserting the fixing pin coupling portion of the locking pin is inserted into the main surface. It is preferable that it is a linear motor which advances and retreats in a direction.

As described above, the roll die assembly according to the present invention is provided with a taper plate locking device so that the upper taper plate and the roll die fixed thereto can be easily fixed to the tool holder, so that even if the roll die assembly is placed in an inverted state, the upper taper plate And the rolling die can be prevented from sagging downward.

Precise and stable roll processing is possible regardless of the position of the roll die assembly, and the taper plate locking device easily fixes the roll die to the tool holder, so that the protruding height of the roll die can be adjusted quickly. Convenience is very high.

1 is a conceptual diagram of a rolling machine using a flat roll die according to the prior art,
FIG. 2 is a conceptual diagram of a roll die assembly mounted to the roll generator of FIG. 1; FIG.
3 is a conceptual cross-sectional view of the roll die assembly of FIG.
4 is a perspective view of the roll die assembly according to an embodiment of the present invention,
5 is an exploded perspective view of the roll die assembly of FIG. 4;
6 is a perspective view of the tool holder body of FIG. 5, FIG.
7 is a perspective view of the lower taper plate of FIG. 5, FIG.
8 is a perspective view of the upper taper plate of FIG. 5, FIG.
9 is an exploded perspective view of the tapered plate locking device of FIG.
10 is a view showing a coupled state of the tapered plate locking device of FIG.
11 is a longitudinal conceptual cross sectional view of the roll die assembly of FIG. 4;
12 is a cross-sectional conceptual cross-sectional view of the roll die assembly of FIG. 4;
13 and 14 conceptually show the operating state of the tapered plate locking device of FIG.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification. When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated.

4 is a perspective view of the roll die assembly according to an embodiment of the present invention, Figure 5 is an exploded perspective view of the roll die assembly of Figure 4, Figure 6 is a perspective view of the tool holder body of Figure 5, Figure 7 is Figure 5 8 is a perspective view of the upper tapered plate of FIG. 5, FIG. 9 is an exploded perspective view of the tapered plate locking device of FIG. 5, and FIG. 10 is a coupled state of the tapered plate locking device of FIG. 9. 11 is a longitudinal cross-sectional conceptual view of the roll die assembly of FIG. 4, and FIG. 12 is a cross-sectional conceptual cross-sectional view of the roll die assembly of FIG. 4.

Rolling die assembly according to an embodiment of the present invention, is provided in a pair in the rolling mill for reciprocating in a direction opposite to each other for rolling the rod-shaped material.

The roll die assembly of the present embodiment can automatically and precisely adjust the protruding height of the roll die, thereby using a fully automated roll generator system.

In addition, since the rolling die is firmly fixed to the tool holder while the protruding height of the rolling die is adjusted, precise rolling is possible regardless of the posture of the rolling die assembly.

The roll die assembly of the present embodiment can be used by being mounted on both a counter flow machine (vertical flow machine) or a Roto-Flo machine (horizontal roll machine).

The roll die assembly of this embodiment includes a tool holder (100), a lower taper plate (200), an upper taper plate (300), a roll die (400), and an adjusting bolt (500). , The adjusting bolt motor 600, the tapered plate locking device 700, and the rolling die fixing means.

Each component is coupled through a coupling bolt coupled to the coupling hole and the coupling hole, and most coupling bolts and coupling holes are omitted in the drawings to avoid confusion of the main parts. Some coupling bolts and coupling holes that need to be described will be described separately with reference numerals.

The rolling die assembly of this embodiment is provided with two rolling dies 400 so that reciprocating rolling is possible. However, this is only an example and may be implemented in a form in which only one roll die 400 is provided according to the embodiment.

Tool holder 100 is provided. Tool holder 100 is to be fixed to the slider of the rolling machine reciprocating in the longitudinal direction, the lower taper plate 200, the upper taper plate 300, the adjusting bolt motor 600, the taper plate locking device 700 This is where the back is fixed.

The tool holder 100 of the present embodiment includes a tool holder body 110, a first guide cover 120, and a second guide cover 130.

The tool holder body 110 extends in the longitudinal direction in a state bent by a letter 'B' and includes a bottom portion 111 and a sidewall portion 112 that is bent and extended from the bottom portion 111.

A fixing pin receiving portion 111a for accommodating the fixing pin 710 of the tapered plate locking device 700 is formed at the bottom 111 of the tool holder body 110. The fixing pin accommodating part 111a is a circular through hole formed in the thickness direction through the bottom part 111. In this embodiment, three fixing pin receiving portions 111a are formed spaced apart from each other along the longitudinal direction.

A locking pin through hole 111b for accommodating the locking pin 730 of the tapered plate locking device 700 is formed at the bottom 111 of the tool holder body 110. The locking pin through hole 111b is a circular through hole formed in the width direction in the bottom part 111 so as to communicate with the fixing pin receiving portion 111a. In this embodiment, three locking pin through holes 111b are formed to communicate with each of the three fixing pin receiving portions 111a.

The guide block coupling portion 112a is formed at the side wall portion 112, and the guide block 112b is coupled to the guide block coupling portion 112a. The guide block 112b guides the longitudinal retraction of the lower taper plate 200 and prevents the lower taper plate 200 from leaving the tool holder body 110. The guide block 112b is coupled to protrude inward to the guide block coupling portion 112a through a coupling screw (not shown).

First oil grooves 111c and 112c for lubricating a contact surface with the lower taper plate 200 are formed at the bottom 111 and the sidewall 112 of the tool holder body 110.

The first oil grooves 111c and 112c are formed on the contact surface with the lower tapered plate 200 of the bottom 111 and the contact surface with the lower taper plate 200 of the side wall 112, respectively. The first oil grooves 111c and 112c are bent and extended in the shape of the letter 'd' along the length direction of the tool holder body 110.

The lubricating oil flows along the first oil grooves 111c and 112c to lubricate the contact surface of the lower taper plate 200 so that the longitudinal tapering of the lower taper plate 200 can be smoothly made.

The first guide cover 120 is provided to be coupled to one end of the tool holder body 110 in the longitudinal direction. The first guide cover 120 is formed on the surface facing the tool holder body 110 so that the lower tapered plate 200 can move forward and backward, and is adjusted toward the first forward and backward space 121. The bolt through hole 122 is formed through.

The second guide cover 130 is provided to be coupled to the other end of the tool holder body 110 in the longitudinal direction. The second guide cover 130 is formed with a second retreat space 131 on the surface facing the tool holder body 110 so that the lower taper plate 200 can advance and retreat.

The first guide cover 120 and the second guide cover 130 are respectively coupled to one end and the other end of the tool holder body 110 in the longitudinal direction using a coupling bolt (not shown).

The first guide cover 120 is provided with a first guide spacer 141 in contact with one end portion of the upper taper plate 300 in the longitudinal direction to guide the thickness movement of the upper taper plate 300.

The second guide cover 130 is provided with a second guide spacer 142 contacting the other end of the upper taper plate 300 in the longitudinal direction to guide the thickness movement of the upper taper plate 300.

The first guide spacer 141 and the second guide spacer 142 are respectively coupled to the first guide cover 120 and the second guide cover 130 through coupling bolts (not shown).

The first guide cover 120 is provided with a first catching plate 151 for preventing deviation in the thickness direction of the upper taper plate 300. Similarly, the second guide cover 130 is also provided with a second catching plate 152 for preventing deviation in the thickness direction of the upper taper plate 300.

Like the first and second guide spacers 141 and 142, the first and second locking plates 151 and 152 are coupled to the first and second guide covers 120 and 130 through coupling bolts (not shown), respectively.

The tool holder 100 is provided with a lower taper plate 200 capable of retracting in the longitudinal direction with one side of the thickness direction being supported by the tool holder body 110. On the other side in the thickness direction of the lower taper plate 200, a first inclined surface S1 inclined at a predetermined slope is formed. That is, the lower taper plate 200 is in the shape of a wedge having a thickness gradually decreasing toward the second guide cover 130 as shown in the figure.

The lower taper plate 200 is formed with a plurality of fixing pin long holes 210 extending in the longitudinal direction through the thickness direction. The fixing pin long hole 210 is a through hole for the fixing pin 710 of the tapered plate locking device 700 to pass through.

The fixing pin long hole 210 allows the lower taper plate 200 to be advanced in the longitudinal direction without being affected by the fixing pin 710 even when penetrated by the fixing pin 710. The fixing pin long holes 210 are formed at positions corresponding to the fixing pin receiving portions 111a of the tool holder body 110, respectively.

At one end in the longitudinal direction of the lower taper plate 200, an adjusting bolt coupling part 220 for screwing the adjusting bolt 500 is formed. In this embodiment, the adjustment bolt coupling portion 220 is a nut member that is separately manufactured and coupled to one end portion in the longitudinal direction of the lower taper plate 200.

A second oil groove 230 for lubricating the contact surface with the upper tapered plate 300 is formed on the first inclined surface S1 of the lower tapered plate 200.

Like the first oil grooves 111c and 112c of the tool holder body 110, the second oil groove 230 may be lubricated and may lubricate the contact surface of the lower taper plate 200.

The guide grooves 240 are provided at one side and the other side in the width direction of the lower taper plate 200 so that the guide block 112b and the guide protrusion 161 for guiding the longitudinal progression of the lower taper plate 200 may be inserted. Is formed. Guide groove 240 is a groove-shaped groove extending in the longitudinal direction.

The upper taper plate 300 is provided on the other side in the thickness direction of the lower taper plate 200. On one side of the upper taper plate 300 in the thickness direction, an inclined second inclined surface S2 is formed to correspond to the first inclined surface S1 of the lower tapered plate 200. The upper taper plate 300 is disposed such that the second inclined surface S2 is in close contact with the first inclined surface S1 of the lower tapered plate 200.

One end of the upper taper plate 300 in the longitudinal direction is disposed to contact the first guide spacer 141, and the other end of the upper taper plate 300 in the longitudinal direction is disposed to contact the second guide spacer 142.

When the lower taper plate 200 is advanced in the longitudinal direction, the second inclined surface S2 of the upper taper plate 300 is slid along the first inclined surface S1, and the upper taper plate 300 is moved in the thickness direction. At this time, the first and second guide spacers 141 and 142 guide the upper taper plate 300 to move only in the thickness direction.

The upper taper plate 300 includes a fixing pin insertion portion including a head receiving portion 311 recessed in one side in the thickness direction from the other side in the thickness direction and a fixing pin through hole 312 penetrated in one side in the thickness direction from the head receiving portion 311. 310 is formed.

The fixing pin insertion parts 310 are spaced apart from each other along the longitudinal direction and are formed at positions corresponding to the fixing pin long holes 210 of the lower taper plate 300, respectively.

The side support part 320 which supports the width direction one side of the rolling die 400 is integrally formed in the width direction one side of the upper taper plate 300 integrally. The side support 320 is formed to extend in the 'b' shape on one side of the upper tapered plate 300 in the width direction.

The side support 320 is for supporting one side of the rolling die 400 in the width direction when fixing the rolling die 400 to the upper tapered plate 300. A plurality of clamping bolt coupling holes 321 for penetrating in the width direction are formed in the side support 320 spaced apart in the longitudinal direction.

The side support member 320 is provided with a side spacer 350 for contacting one side in the width direction of the rolling die 400. The side spacers 350 of this embodiment are divided into a plurality of pieces.

On the other side of the upper taper plate 300 in the thickness direction, the fixed block coupling groove 340 is configured to couple the first and second fixing blocks 341 and 342 for fixing the rolling die 400 to the upper taper plate 300, respectively. Is formed. The fixed block coupling groove 340 is formed in a concave groove shape on one side and the other side in the longitudinal direction of the upper tapered plate 300.

The tool holder 100 is further provided with a tapered plate guider 160 for guiding the longitudinal movement of the lower tapered plate 200 seated on the tool holder 100 and the thickness movement of the upper tapered plate 300. The tapered plate guider 160 is fixed to the other side in the width direction of the tool holder body 110 (the front part in the drawing).

In this embodiment, two tapered plate guiders 160 are provided. One tapered plate guider 160 is coupled to overlap a portion of the first guide cover 120 provided at one end of the tool holder body 110 in the longitudinal direction, and the other tapered plate guider 160 is a tool holder. The second guide cover 130 provided at the other longitudinal end of the body 110 is coupled to overlap a portion.

The tapered plate guider 160 is formed with a guide protrusion 161 for guiding the longitudinal progression of the lower taper plate 200. The guide protrusion 161 protrudes in the width direction from the tapered plate guider 160 and is inserted into the guide groove 240.

On the other side in the thickness direction (upper surface in the drawing) of the upper taper plate 300, a die spacer 360 having a plate shape divided into a plurality of pieces is provided. The rolling die 400 is coupled to an upper surface of the die spacer 360.

The rolling die 400 is fixed to the upper taper plate 300 by a rolling die fixing means coupled to the upper taper plate 300. The fixed rolling die 400 is moved in the thickness direction together with the upper taper plate 300.

The rolling die fixing means is provided on both sides of the first and second fixing blocks 341 and 342 and the upper taper plate 300 which are coupled to the fixing block coupling groove 340 of the upper taper plate 300 to form the rolling die 400. Side clamps 371 and 372 fixed to the upper taper plate 300 and binding bolts 380 for binding the side clamps 371 and 372.

As mentioned above, the roll die assembly of the present embodiment is provided with a pair of roll dies 400. An intermediate spacer 390 is inserted between the pair of roll dies 400 to space the roll dies 400 at regular intervals.

The intermediate spacer 390 and the pair of rolling dies 400 are disposed on the upper surface of the die spacer 360 by the first and second fixing blocks 341 and 342, the side clamps 371 and 372, and the binding bolt 380. It is fixed to the upper taper plate 300.

The first and second fixing blocks 341 and 342 fix one side and the other side in the longitudinal direction of the rolling die 400 and the intermediate spacer 390 to the upper taper plate 300, respectively. In addition, the binding bolts 380 are arranged in the width direction, and side clamps 371 and 372 are coupled to both ends using nuts 381, respectively, to roll the rolling die 400 and the intermediate spacer 390 into the upper taper plate 300. Secure in.

At this time, the binding bolt 380 is the side clamp (371,372) at both ends in the state passing through the binding bolt coupling hole 321 for the clamp of the side support 320 past the die spacer 360 divided into a plurality of pieces. Is coupled to the nut 381.

The coupling form of the rolling die holding means consisting of the first and second fixing blocks 341 and 342, the side clamps 371 and 372 and the binding bolt 380 and the rolling die 400 by them is just one example, which is changed according to the embodiment. Can be.

The rolling die assembly of this embodiment moves the rolling die 400 in the thickness direction without removing the first and second fixing blocks 341 and 342, the side clamps 371 and 372, and the binding bolt 380, which are the rolling die fixing means, respectively. The protruding height of the rolling die 400 can be adjusted.

The protruding height of the roll die 400 is adjusted by advancing the lower taper plate 200 in the longitudinal direction. An adjustment bolt motor 600 for automatically rotating the adjustment bolt 500 and the adjustment bolt 500 is provided to advance the lower taper plate 200 in the longitudinal direction.

The adjusting bolt 500 is rotatably installed in the first guide cover 120 by passing through the adjusting bolt through hole 122 of the first guide cover 120. And the motor 600 for the adjustment bolt is fixed to the first guide cover 120 through the motor bracket 610.

One end of the adjustment bolt 500 is rotatably screwed to the adjustment bolt coupling portion 220 of the lower taper plate 200. The other end of the adjusting bolt 500 is fixedly coupled to the adjusting bolt motor 600 through the adjusting bolt bracket 510.

The motor 600 for adjusting bolts is a servomotor whose rotation angle of a rotor is precisely controlled. When the adjusting bolt 500 is rotated by using the adjusting bolt motor 600, the lower taper plate 200 which is screwed to one end of the adjusting bolt 500 may be advanced in the longitudinal direction.

When the adjusting bolt 500 is rotated by controlling the adjusting bolt motor 600, which is a servo motor that is precisely rotated by a pulse signal, the protruding height of the rolling die 400 may be precisely adjusted.

The adjusting bolt 500 is screwed to the adjusting bolt coupling portion 220 of the lower taper plate 200, and the separation due to the backlash (backlash) is generated on the coupling portion due to the screw coupling method. This causes an error in adjusting the position of the lower taper plate 200 through the adjustment bolt 500.

In addition, in the case of horizontal rolling in the state of arranging the two roll die assemblies up and down, the roll die assembly located on the upper side is operated in an inverted state unlike the roll die assembly located on the lower side.

Therefore, the upper taper plate 300 and the rolling die 400 of the rolling die assembly used in an inverted state are struck downward by its own weight. In other words, the rolling die 400 is not fixed at the correct position.

In order to solve this problem, the rolling die assembly of the present embodiment is further provided with a tapered plate locking device 700.

The taper plate locking device 700 adjusts the protruding height of the rolling die 400 by moving the upper taper plate 300 in the thickness direction, and then, the lower taper plate 200 and the upper taper plate 300 are tool holders. It is for fixing to 100.

The taper plate locking device 700 includes a fixing pin 710, a fixing pin guide bushing 720, a locking pin 730, a locking pin guide bushing 740, and a locking pin retracting device 750.

The fixing pin 710 is provided to penetrate through the fixing pin insertion part 310 of the upper taper plate 300 and the fixing pin long hole 210 of the lower taper plate 200 in the thickness direction, and the upper taper plate 300 ) And the lower taper plate 200 to the tool holder body 110.

One end of the fixing pin 710 is formed with a locking head 711 is inserted into the fixing pin insertion portion 310 to be caught by the head receiving portion 311. The other end of the fixing pin 710 has a through-hole locking pin having a third inclined surface S3 inclined toward the locking pin through hole 111b while being directed in the fixing pin receiving portion 111a. Coupling portion 712 is formed.

A fixing pin washer 760 is provided in the head receiving portion 311 of the fixing pin insertion part 310, and the fixing pin 710 is inserted into the fixing pin insertion part 310 by passing through the fixing pin washer 760. The locking head 711 of the fixing pin 710 fixes the upper taper plate 300 to the tool holder 100 in contact with the washer 760 for the fixing pin.

The fixing pin guide bushing 720 is for guiding the movement in the thickness direction of the fixing pin 710. The fixing pin guide bushing 720 has a hollow tube shape extending in the thickness direction and a fixing pin coupling part through hole 721 is formed on the main surface thereof so that the fixing pin coupling part 731 of the locking pin 730 to be described later is inserted. .

Meanwhile, a flange 722 is formed at one end of the fixing pin guide bushing 720, and the fixing pin receiving portion 111a of the tool holder body 110 is formed in a shape corresponding to the fixing pin guide bushing 720. The fixed pin guide bushing 720 is fixedly coupled to the tool holder body 110.

The other end of the fixing pin 710 is inserted into the fixing pin guide bushing 720, and the locking pin coupling portion 712 of the fixing pin 710 is a hole 721 for the fixing pin coupling portion of the fixing pin guide bushing 720. It communicates with the outside through

The locking pin 730 penetrates the locking pin through hole 1110b of the tool holder body 110 in the width direction, and is coupled to the fixing pin 710 to attach the fixing pin 710 to the tool holder body 110. It is for fixing.

The locking pin 730 has a pin shape such that one end thereof is inserted into the locking pin coupling part 712 of the fixing pin 710 to fix the locking pin 710. One end of the locking pin 730 has a fixing pin coupling portion 731 is inserted into the locking pin coupling portion 712 is formed. The fixing pin coupling part 731 has a wedge shape in which an inclined fourth inclined surface S4 is formed to correspond to the third inclined surface S3. And the other end of the lock pin 730 is formed with a male screw type retractor coupling portion 732 to be coupled to the lock pin retractor 750.

The lock pin guide bushing 740 is for guiding the retraction of the lock pin 730 in the width direction and has a hollow tube shape extending in the width direction.

A flange 741 is formed at one end of the locking pin guide bushing 740, and the locking pin through hole 111b of the tool holder body 110 is formed in a shape corresponding to the locking pin guide bushing 740. The locking pin guide bushing 740 is inserted into the locking pin through hole 111b and fixedly coupled to the tool holder body 110.

A lock pin retractor 750 is provided to advance the lock pin 730 in the width direction. The lock pin retractor 750 of the present embodiment is a linear motor coupled to the retractor coupler 732 of the lock pin 730 to advance and retract the lock pin 730 by a predetermined length.

Implementing the lock pin retractor 750 using a linear motor greatly simplifies the overall structure of the tapered plate lock 700. Therefore, the upper taper plate 300 and the lower taper plate 400 can be easily fixed by a simple operation of driving the lock pin retractor 750, and the fixed state can be easily released.

Fixing pin 710 is provided in the thickness direction to allow the upper taper plate 300 and the lower taper plate 200 to be fixed to the tool holder body 110, the locking pin 730 is provided in the width direction fixing pin 710 to be secured to the tool holder body 110.

The fixing pin coupling part 731 of the locking pin 730 is inserted into the locking pin coupling part 712 of the fixing pin 710 by passing through the fixing pin coupling hole 721 of the fixing pin guide bushing 720. When the locking pin 730 is advanced toward the fixing pin 710, the fourth inclined surface S4 of the locking pin 730 is in contact with the third inclined surface S3 of the fixing pin 710 to fix the pin 710. Is pressed against the tool holder body 110. The fixing pin 710 pressed toward the tool holder body 710 by the locking pin 730 fixes the upper taper plate 300 and the lower taper plate 200 to the tool holder body 110.

On the contrary, when the locking pin 730 is retracted from the fixing pin 710, the fourth inclined surface S4 of the locking pin 730 is spaced apart from the third inclined surface S3 of the fixing pin 710 so that the fixing pin 710 is separated. It can move freely in the thickness direction.

In such a state, the lowering taper plate 200 may be advanced in the longitudinal direction by controlling the adjusting bolt motor 600 to control the adjusting bolt motor 600, and the upper upper taper plate 200 may be retracted in the longitudinal direction of the lower taper plate 200. The tapered plate 300 is moved in the width direction.

After adjusting the protruding height of the rolling die 400, the locking pin 730 is moved forward to fix the fixing pin 710, so that the rolling die 400 can be easily fixed to the tool holder 100.

13 and 14 are conceptual views showing the operating state of the tapered plate locking device of FIG.

In order to adjust the protruding height of the rolling die 400, the locking pin 730 is retracted by using the locking pin retractor 750. When the locking pin 730 is retracted, the fixing pin 710 is free to move in the thickness direction along the fixing pin guide bushing 720. The upper taper plate 300 fixed to the tool holder 100 by the fixing pin 710 and the roll die 400 fixed thereto are freely movable in the thickness direction.

When the lower taper plate 200 is moved in the longitudinal direction by operating the adjusting bolt 500 in this state, the upper in which the second inclined surface S2 is in contact with the first inclined surface S1 of the lower tapered plate 200. The tapered plate 200 is moved in the thickness direction and the protruding height of the rolling die 400 is adjusted.

After adjusting the protruding height of the rolling die 400, the lock pin retractor 750 is operated to advance the lock pin 730. When the locking pin 730 is advanced, the fixing pin coupling part 731 of the locking pin 730 is inserted into the locking pin coupling part 712 of the fixing pin 710 so that the fixing pin 710 is the tool holder body 110. Is fixed to.

More specifically, the fourth inclined surface S4 of the locking pin 730 is in contact with the third inclined surface S3 of the fixing pin 710, and the fixing pin 710 is tool holder as the locking pin 730 is advanced. Moving toward the body 110, the upper taper plate 300 and the lower taper plate 200 are fixed to the tool holder 100.

When the rolling die 400 is fixed to the tool holder 100 by the locking pin 730 and the fixing pin 710, the rolling die 400 may be positioned or protruded during the rolling process by using the rolling die assembly. The height does not change That is, a stable and precise roll processing is made.

In addition, the locking state of the upper taper plate 300 and the lower taper plate 200 can be changed by a simple operation of advancing the locking pin 730 by operating the lock pin retractor 750. The height can be easily adjusted.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. .

Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: tool holder 110: tool holder body
111a: fixing pin accommodation portion 111b: locking pin through hole
111c, 112c: First oil groove
120: first guide cover 130: second guide cover
200: lower taper plate S1: first inclined surface
210: long hole for the fixing pin 230: second oil groove
300: upper taper plate 310: fixing pin insert
311: head receiving portion 312: fixing pin through hole
400: Rolling die 500: Adjusting bolt
600: motor for adjusting bolt
700: taper plate locking device 710: fixing pin
712: locking pin coupling portion S3: third slope
720: fixing pin guide bushing 721: through hole for fixing pin coupling portion
730: locking pin 731: fixing pin coupling portion
S4: fourth slope 740: locking pin guide bushing
750: locking pin retractor

Claims (2)

In a roll die assembly provided with a pair of rolls and reciprocating in opposite directions to roll the rod material:
It is provided in the form of extending in the longitudinal direction is provided to be fixed to the slider of the rolling machine reciprocating in the longitudinal direction, the fixing pin receiving portion is formed in the thickness direction and the locking pin through hole communicating with the fixing pin receiving portion in the width direction is penetrated therethrough A tool holder including a tool holder body to be formed, and first and second guide covers respectively provided at one end of the tool holder body in the longitudinal direction and the other end of the tool holder body;
One side of the thickness direction is provided to advance in the longitudinal direction while being supported by the tool holder body, the first inclined surface is formed on the other side in the thickness direction, of the long hole shape extending in the longitudinal direction at a position corresponding to the receiving pin receiving portion A lower taper plate formed by passing through the fixing pin long hole in the thickness direction;
A second inclined surface inclined to correspond to the first inclined surface of the lower tapered plate is formed at one side in the thickness direction, and the second inclined surface is disposed at the other side in the thickness direction of the lower tapered plate such that the second inclined surface is in contact with the first inclined surface. A fixing pin insertion portion consisting of a head receiving portion recessed toward the other side in the thickness direction on one side and a fixing pin through hole penetrating from the head receiving portion to the thickness direction on one side is formed to communicate with the fixing pin long hole, and the lengthwise direction of the lower taper plate. An upper taper plate which is guided to the first and second guide covers to move in the thickness direction when advancing;
Roll die which is provided to move in the thickness direction with the upper tapered plate;
Rolling die fixing means for fixing the rolling die to the upper taper plate;
An adjusting bolt screwed to the lower taper plate to advance the lower taper plate in a longitudinal direction;
A motor for adjusting bolt for rotating the adjusting bolt;
It is provided to advance through the fixing pin long hole in the thickness direction, the engaging head is formed at one end is inserted into the fixing pin insertion portion to be caught by the head receiving portion is inserted into the fixing pin receiving portion in the other end Fixing pins having a locking pin engaging portion having a third inclined surface inclined toward the locking pin through hole toward the locking pin, and provided to retreat in the width direction through the locking pin through hole, but at one end of the locking pin engaging portion. A taper plate locking device including a locking pin which is insertable and includes a locking pin coupling portion having an inclined fourth inclined surface corresponding to the third slope, and a lock pin retracting device for retracting the locking pin in a width direction;
Roll die assembly, characterized in that comprises a.
The method of claim 1,
The locking pin through-hole is provided with a locking pin guide bushing in the form of a hollow tube extending in the width direction to guide the retreat of the locking pin, and the fixing pin receiving portion has a hollow tube shape extending in the thickness direction, A fixing pin guide bushing is formed in which a fixing pin coupling hole for inserting the fixing pin coupling portion of the locking pin is provided, and the locking pin retraction device is coupled to the other end of the locking pin to advance and retract the locking pin in the width direction. Rolling die assembly, characterized in that the linear motor.

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