KR100760657B1 - Apparatus for heating a linear motion rail - Google Patents

Abstract

An apparatus for heat treatment of a linear motion rail is provided to effectively heat treat the rail by allowing inner faces of guide dies to contact with at least two positions on an outer face of the rail in a length direction of the guide dies, thereby stably guiding the rail. An apparatus for heat treatment of a linear motion rail comprises: a heat treatment part; and guide dies disposed in front and rear of the heat treatment part to guide the rail, wherein inner faces of the guide dies contact with at least two positions on an outer face of the rail in a length direction of the guide dies, and the guide dies include a bottom part, and side parts installed at both sides of the bottom part and disposed at both sides of the rail. An apparatus for heat treatment of a linear motion rail comprises: a heat treatment part; and guide dies(140) disposed in front and rear of the heat treatment part to guide the rail, wherein inner faces of the guide dies contact with at least two positions on an outer face of the rail in a length direction of the guide dies, and the apparatus further comprises: a roller(160) disposed in an upper part of the guide dies such that the roller is linearly contacted with an upper surface of the rail to guide the rail; a bracket(120) supporting the roller; a screw(131) connected to a shaft of the roller; and a nut part(121) formed on the bracket such that the screw is inserted into the nut part.

Description

Linear motion rail heat treatment device {apparatus for heating a linear motion rail}

1 is a perspective view of a conventional linear motion rail heat treatment apparatus.

Figure 2 is a perspective view of a linear motion rail heat treatment apparatus according to a preferred embodiment of the present invention.

3 is a partial perspective view of a linear motion rail heat treatment apparatus according to a preferred embodiment of the present invention.

Figure 4 is a perspective view of the partial separation of the linear motion rail heat treatment apparatus according to a preferred embodiment of the present invention.

Figure 5 is a cross-sectional view of the linear motion rail heat treatment guide mold according to a preferred embodiment of the present invention.

Figure 6 is a cross-sectional view of the linear motion rail heat treatment guide mold according to another embodiment of the present invention.

Figure 7 is a simplified perspective view of the rear portion of the linear motion rail heat treatment apparatus according to a preferred embodiment of the present invention.

** Description of symbols for the main parts of the drawing **

110: mounting table 120: bracket

121, 353, 211: nut 122: spring

123: head 124: support

125: upper surface 126: side

127: bend portion 128: rib

131, 352, 230: screw 132: upper flange

133: screw thread

140, 140a, 140b: guide mold 141: chamfer

142: side 143: bottom

144: protrusion 145: protrusion

146 step

150, 351 connection part

151: upper surface 152: side wall

160: roller

210: left and right roller housing 220: outer surface

310: upper and lower roller housing 320: lower roller

350: upper roller 410: second bevel gear

420: drive shaft 440: third bevel gear

450: fourth bevel gear 510: auxiliary guide

511: auxiliary roller 600: motor

610: first bevel gear

Korean Patent Registration No. 421721

The present invention relates to a linear motion rail heat treatment apparatus, in particular, the inner surface of the guide mold is in contact with the outer surface of the rail in at least two places in the longitudinal direction of the guide mold, the rail can be stably guided heat treatment can be effectively It relates to a linear motion rail heat treatment apparatus.

Conventional linear motion rail heat treatment apparatus is presented in Korea Patent No. 421721.

As shown in FIG. 1, the high frequency heat treatment apparatus includes an inlet part 10 through which a linear motion guide rail is introduced for high frequency heat treatment, first and second guide means 20 and 40 for guiding the linear motion guide rail, It is disposed between the two guide means comprises a high frequency heat treatment unit 50 for high-frequency heat treatment of the linear motion guide rails and the discharge portion 60 for discharging the high-frequency heat-treated linear motion guide rails.

The inlet portion 10 is arranged in parallel to each other and the frame (11, 12) fixed to the base and the three idle roller 13 is disposed between the frames rotatably fixed to the inner side of the two frame (13) Have. Since the driving source is not connected to the rollers 13, the roller 13 functions only to support the inflow of the linear motion guide rail.

The linear motion guide rail entering the inlet 10 is introduced into the first guide means 20 by a drawing means not shown.

As shown in FIG. 1, the first guide means 20 includes a plurality of pairs of left and right rollers and the workpiece disposed on both sides of the workpiece to guide the workpiece, which is the linear motion guide rail, from the side. It comprises a plurality of pairs of upper and lower rollers disposed on the upper and lower surfaces of the workpiece to be guided from the upper and lower surfaces.

The second guide means 40 also includes a plurality of pairs of upper and lower rollers and a plurality of pairs of left and right rollers.

The high frequency heat treatment unit 50 is provided between the first and second guide means 20, 40 with the working coil 51, and the working coil 51 is connected to an oscillator (not shown), It is also connected to a cooling water supply device for supplying cooling water. Therefore, when the work coil, which is a conductor, is placed in the working coil 51 through the high frequency current supplied from the oscillator and the high frequency current flows, the eddy current loss and the resistance of hysteresis Heat is generated. In addition, the working coil 51 is provided with a plurality of cooling water jet ports (not shown), and the cooling water supplied by the cooling water supply device cools the heat-treated workpiece through the jet port.

The discharge unit 60 is disposed downstream of the second guide means 40 to discharge the linear motion guide rail heat-treated in the high frequency heat treatment unit 50. Like the inlet part 10, the outlet part 60 may be arranged in parallel with each other and fixed to a base 61 and 62, and disposed between the frames and rotatably disposed on the inner surfaces of the two frames. It has three idle rollers 63 fixed. Since the driving source is not connected to the rollers 63, the roller 63 functions only to support the discharge of the linear motion guide rail.

In FIG. 1, the first guide means 20 includes a pair of first left and right rollers 21, a pair of first up and down rollers 22, and a pair of second left and right rollers 23 in the order from the upstream side to the downstream side. ), A pair of third left and right rollers 24, a pair of second up and down rollers 25, a pair of fourth left and right rollers 26, a pair of third up and down rollers 27, a pair of fifth left and right rollers 28 ), A pair of sixth left and right rollers 29, and a pair of seventh left and right rollers 30 are shown. Here, the first pair of up and down rollers 22 and the second pair of up and down rollers 25 are rollers connected to respective motor shafts to draw out the linear motion guide rail as a work piece.

In addition, in FIG. 1, the second guide means 40 includes a pair of first left and right rollers 41, a pair of first upper and lower rollers 42, and a pair of second left and right rollers 43 in the order from the upstream to the day. ), A pair of second up and down rollers 44, a pair of third left and right rollers 45, a pair of third up and down rollers 46, a pair of fourth left and right rollers 47, a pair of fourth up and down rollers 48 ) And a pair of fifth left and right rollers 49 are shown. Here, the third pair of upper and lower rollers 46 are rollers which are connected to the motor shaft and draw out the linear motion guide rail which is a workpiece.

The third pair of upper and lower rollers 22 and the second pair of upper and lower rollers 25 of the first guide means and the third of the second guide means for drawing out the linear motion guide rail as a work piece. As described above, the pair of upper and lower rollers 46 are connected to respective motor shafts, and each of the motors is connected to the controller 70 to enable bidirectional rotation to impart driving force in the forward or reverse direction under the control of the controller. Motors.

The purpose of the bidirectional rotary motors disposed in the high frequency heat treatment apparatus is that when the high frequency heat treatment apparatus does not perform heat treatment and calibration on the workpiece in a desired state, the drawn object is drawn in the reverse direction with respect to the withdrawal direction. The workpieces are reheated and calibrated, and when an abnormality occurs in the high frequency heat treatment apparatus, the workpieces are pulled out in the retraction direction.

The work coil 51 of the high frequency heat treatment unit 50 is disposed between the seventh pair of left and right rollers 30 of the first guide means and the first left and right rollers 41 of the second guide means.

The first and second guide means may be heat treated without deformation when the workpiece is disposed under the following conditions.

In the state where the first and second guide means are arranged as described above, the work coil 51 in the center between the left and right rollers 30 of the first guide means and the left and right rollers 41 of the second guide means. ) Is more preferred.

It should be noted that the distance between the roller axes mentioned above refers to the distance in the horizontal plane between the shaft and the shaft.

As described above, in the state in which the first and second guide means and the work coil 51 are disposed, in the case of a workpiece having a thickness of 40 mm, the transfer speed of the workpiece is transferred from 0.1 to 0.3 m per minute. It is preferable to set it as a speed, and it is most preferable to set it as a feed speed of 0.2 m.

In addition, in the prior art, there is a problem in that a motor must be provided on each of a plurality of rollers in line contact with the rail to correct the rail.

In addition, in the prior art, the rollers are in linear contact in the left and right directions of the rails or linearly contacted in the vertical direction, thereby failing to stably guide the rails.

In addition, the interval between the rollers can not be adjusted, so that the use of the rollers for a long time may cause the rollers to be displaced, thereby preventing the rails from being continuously guided.

 The present invention has been made to solve the above-described problem, the inner surface of the guide mold is in contact with the outer surface of the rail in the longitudinal direction of the guide mold in at least two places, to guide the rail stably so that heat treatment can be effectively The purpose is to provide a linear motion rail heat treatment apparatus.

The present invention for achieving the above object is made in a linear motion rail heat treatment apparatus, including a heat treatment portion, and a guide mold disposed at the front or rear end of the heat treatment portion,

The inner surface of the guide mold is in contact with the outer surface of the rail in at least two places in the longitudinal direction of the guide mold.

According to this structure, there exists an advantage which can guide a rail stably with a simple structure.

The guide mold is provided on both sides of the bottom portion and the bottom portion, and includes side portions disposed on both sides of the rail, and thus the guide mold is integrated, so that the installation is easy.

The guide mold has a roller that is guided in line contact with the upper surface of the rail, and includes a bracket for supporting the roller and a screw connected to the shaft of the roller, the bracket is a nut portion to which the screw is fitted Is formed, the roller has an advantage that can support the upper surface of the rail of various heights.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For reference, among the configurations of the present invention to be described below, the same configuration as the prior art will be referred to the above-described prior art, and a detailed description thereof will be omitted.

Figure 2 is a perspective view of a linear motion rail heat treatment apparatus according to a preferred embodiment of the present invention, Figure 3 is a partial perspective view of a linear motion rail heat treatment apparatus according to a preferred embodiment of the present invention, Figure 4 is according to a preferred embodiment of the present invention Partial separation perspective view of the linear motion rail heat treatment apparatus, Figure 5 is a cross-sectional view of the linear motion rail heat treatment guide mold according to a preferred embodiment of the present invention, Figure 6 is a cross-sectional view of the linear motion rail heat treatment guide mold according to another embodiment of the present invention, Figure 7 is a simplified perspective view of the rear portion of the linear motion rail heat treatment apparatus according to a preferred embodiment of the present invention.

As shown in Figures 2 to 7, in the linear motion rail heat treatment apparatus, the heat treatment portion, and comprises a guide mold (140, 140b) disposed at the front end or the rear end of the heat treatment portion.

The mounting table 110 connects the length portions disposed on the left and right sides in the front and rear directions, and the width portions disposed on the left and right sides, respectively.

The mounting table 110 is installed on the work table.

Guide molds (140, 140b) are disposed on the front side and the rear side of the heat treatment portion, both sides are provided in the width portion of the mounting table (110).

The guide protrusions are formed along the longitudinal direction of the guide molds 140 and 140b so as to be provided on both sides of the guide molds 140 and 140b on the upper surface of the width part, so that the guide molds 140 and 140b are installed on the mounting table 110. The installation position of the 140 and 140b can be determined and installed easily.

The guide molds 140 and 140b include a bottom portion 143 and side portions 142 disposed on both sides of the bottom portion 143 and disposed on both sides of the rail.

It is preferable to form grooves in the left and right directions on the upper surface of the side portion 142 so that the roller 160 does not contact the upper surface of the side portion 142.

The bottom part 143 and the side part 142 are integrally formed.

The guide molds 140 and 140b include a bottom portion 143 and side portions 142 disposed on both sides of the bottom portion 143 and disposed on both sides of the rail. On the inner side of the side portion 142, protrusions 144 are formed along the longitudinal direction of the guide molds 140 and 140b at the top and bottom. A stepped portion 146 is formed to protrude from the lower portion of the protruding portion 144. The inner surfaces of the guide molds 140 and 140b are in contact with the outer surface of the rail at least two places in the longitudinal direction of the guide mold 140. For example, the inner surface of the protrusion 144 formed at the upper side and the upper side of the rail is in surface contact, and the inner surface of the protrusion 144 formed at the lower side and the lower side of the rail is in surface contact, and both sides and the stepped portion 146 of the lower surface of the rail are in contact with each other. The upper surface is in surface contact. The shape of the rail in linear motion is widely used in the art and description thereof will be omitted.

Here, the contact is meant to include both surface contact and line contact.

On the inner side of the side portion 142, protrusions 144 are formed along the longitudinal direction of the guide molds 140 and 140b at the top and bottom.

In other words, the side grooves 142 of the guide molds 140 and 140b are formed in the inner surface along the longitudinal direction.

A stepped portion 146 is formed to protrude from the lower portion of the protruding portion 144.

Due to the stepped portion 146, the bottom portion 143 of the guide mold 140, 140b is formed with a bottom groove along the longitudinal direction on the inner surface.

The side grooves and the bottom grooves are formed in this way, and after the heat treatment is performed by the heat treatment unit, when the rail passes through the guide molds 140 and 140b, the coolant flows to the side grooves and the bottom grooves. There is an advantage that can be cooled effectively.

Unlike the foregoing, the guide mold 140a may have protrusions 145 formed on the bottom 143 so as to be between the stepped portions 146 on both sides.

As such, the inner surfaces of the guide molds 140, 140a and 140b may be variously formed.

The rails are in surface contact with the guide molds 140 and 140b at six locations along the longitudinal direction of the guide molds 140 and 140b.

That is, the inner surface of the protrusion 144 formed at the upper side and the upper side of the rail is in surface contact, and the inner surface of the protrusion 144 formed at the lower side and the lower side of the rail is in surface contact, and both sides of the lower surface of the rail and the upper surface of the stepped portion 146 are Surface contact.

Alternatively, the surface contact as described above may be a line contact depending on the shape of the rail.

When the guide molds 140 and 140b and the rail are in only two surface contacts along the length direction of the guide molds 140 and 140b, protrusions or grooves are formed on the inner surface of the side portions 142 of the guide molds 140 and 140b. The grooves or protrusions fitted therein are formed in the rails so that the guide molds 140 and 140b may guide the rails.

On the other hand, when the guide mold (140, 140b) and the rail is only in line contact along the longitudinal direction of the guide mold (140, 140b), it is preferable to contact at three or more places. For example, when the lower surface and both sides of the rail and the inner surfaces of the guide molds 140 and 140b are in line contact with each other, the rail may be stably guided.

Unlike the above, the bottom portion 143 of the guide mold (140, 140b) is formed to correspond to the lower surface of the rail, the side portion 142 of the guide mold (140, 140b) is formed to correspond to the side of the rail The bottom and side surfaces of the rail may be in surface contact with the side portions 142 and the bottom portion 143 of the guide molds 140 and 140b.

In this way, the inner surface of the guide mold (140, 140b) is in contact with the outer surface of the rail in the longitudinal direction of the guide mold (140, 140b) in at least two places, even through a small number of guide mold (140, 140b) rail Can also be guided stably.

On the front and rear ends of the upper side of the side portion 142, the inner side surface of the side portion 142 is formed to be inclined, and the chamfering portion 141 is formed.

That is, as illustrated in FIGS. 3 and 4, the distance between the front and rear ends of both side portions 142 is wider than the distance between the center portions of both side portions 142 due to the chamfering portion 141.

As such, the chamfering portion 141 may be formed so that the rail may be effectively introduced between the two side portions 142.

The side portion 142 of both sides is formed with a plurality of through-holes for fastening screws, etc. can be detachable to the width portion of the mounting table (110).

As such, the guide molds 140 and 140b are detachably installed, and when the cross-sectional shape of the rail is changed, the guide molds 140 and 140b can be installed and applied accordingly.

The roller 160 is guided in line contact with the upper surface of the rail, and is disposed on the guide molds 140 and 140b so as to be left and right in the direction of the axis.

As described above, the roller 160 may be in line contact with the upper surface of the rail to restrain the rail in the vertical direction so that the rail may be guided more stably.

The screw 131 is formed with a screw thread 133 on the outer circumferential surface thereof and is connected to the shaft of the roller 160.

The screw thread 133 is not formed in the upper end of the screw 131, and the cross-sectional shape is formed in polygonal shape.

Thus, the upper end of the screw 131 is formed, it is possible to easily rotate the screw 131 through the tool.

An upper flange 132 is formed on the lower outer circumferential surface of the screw 131 so as to be positioned above the lower flange and the lower flange.

When the screw 131 and the connecting portion 150 are fastened, the lower flange is positioned below the upper surface 151 of the connecting portion 150, and the upper flange 132 is positioned above the upper surface 151 of the connecting portion 150. Done.

The lower flange and the upper flange 132 as described above serves as a locking jaw so that the screw 131 does not go down or rise with respect to the connection part 150.

The screw 131 and the roller 160 are connected through the connection part 150.

The connection part 150 includes an upper surface 151 connecting the side wall 152 and both side walls 152, the shaft of the roller 160 is rotatably connected to both side walls 152 and a screw on the upper surface 151. The through hole is formed so that the 131 can be fitted.

As a result, the screw 131 is rotatably mounted to the connection part 150.

The bracket 120 includes a side surface 126, an upper surface 125 connecting both side surfaces 126, and a front and rear surface disposed at front and rear sides of the side surface 126 to support the roller 160.

Guide molds 140 and 140b are disposed between the two side surfaces 126.

A bent portion 127 is formed at the bottom of the side surface 126, and a through hole into which a screw is inserted is formed in the bent portion 127 so that the bracket 120 may be installed at the width portion of the mounting table 110.

As such, the guide mold 140 is installed at the width portion at the front and the width portion at the rear of the mounting table 110, and the roller 160 is installed at the top of the guide mold 140 installed at the width portion at the front, and In the space between the width portion in the back and the width portion in the rear portion by arranging the device for guiding the rail to arrange the device for heat treatment, it can be easily applied to a variety of heat treatment devices without a separate assembly process is easy to install.

As a result, the bracket 120 is detachable to the mounting table 110.

Preferably, ribs 128 are formed between the bent portion 127 and the side surface 126 to increase rigidity.

A through hole through which the nut part 121 passes is formed in the upper surface 125, and a nut part 121 is provided in an upper portion of the upper surface 125.

Unlike the above, a thread is formed on the inner circumferential surface of the through hole formed on the upper surface 125 so that the nut may not be separately provided.

A thread is formed on the inner circumferential surface of the nut part 121.

The spring 122 is disposed above the nut part 121, and the support part 124 is fitted into the spring 122.

The nut part 121 is formed with a through hole into which the support part 124 is fitted.

A head portion 123 capable of supporting the spring 122 is formed on an upper portion of the support portion 124, and a lower portion of the support portion 124 is installed on the upper surface 125 of the bracket 120.

As a result, the spring 122 is supported by the head 123 to continuously apply an elastic force to the nut 121 so that the nut 121 is tightly fixed to the upper surface 125 of the bracket 120. That is, the spring 122 serves to prevent the nut portion 121 from loosening.

By such a structure, when the screw 131 is turned, the screw 131 is rotatably installed in the connection part 150, and only the screw 131 is rotated. When the screw 131 is rotated, the nut part 121 is rotated. Screw 131 and the roller 160 and the coupling portion 150, the connection portion 150 is lowered or raised up relative to the bracket 120 fixed to the mounting (110).

Unlike the above, the screw 131 may be rotated instead of the screw 131 so that the screw 131 is lowered or raised.

Thus, the height of the roller 160 is adjustable, the roller 160 is in line contact with the upper surface of the rail of various heights.

The heat treatment unit is provided with a high frequency heat treatment unit including a working coil as in the prior art, and is provided with a cooling water supply means for cooling the heat treated rail.

An auxiliary guide 510 is disposed between the heat treatment part and the guide molds 140 and 140a so as to be located at the front side and the rear side of the heat treatment part.

The auxiliary guide 510 has a groove through which a rail can pass, and a groove is formed at both sides in a width direction.

Support portions including an upper support portion and a lower support portion disposed below the upper support portion are installed in the grooves, respectively.

A small auxiliary roller 511 is installed between the upper support and the lower support so that the shaft is disposed in the vertical direction.

As such, the auxiliary roller 511 disposed on the front side guides the rails passing through the guide molds 140 and 140a to the heat treatment unit stably, and the auxiliary roller 511 disposed on the rear side passes the rails through the heat treatment unit. Guides stably to the guide mold (140, 140a).

The left and right rollers are provided in plural left and right pairs respectively at the front side and the rear side of the heat treatment unit.

The left and right rollers are rotatably mounted in the left and right roller housings 210.

In such a left and right roller, the shaft is disposed in the vertical direction and is in linear contact with the side surface of the rail.

The left and right roller housings 210 are formed with a through hole into which the screw 230 is inserted, and the nut part 211 is installed at the outer surface 220 of the left and right roller housings 210 so as to communicate with the through holes.

Here, a plurality of nut parts 211 may be provided to prevent loosening.

The screw 230 and the left and right rollers are connected to each other through upper and lower surfaces, including side surfaces connecting upper and lower surfaces, and having a 'c' shape.

The screw 230 is rotatably mounted in the through-hole formed in the connecting portion, the screw 230 is mounted on the outer circumferential surface so as to be disposed on the outside and the inside of the connecting portion, respectively, when the screw 230 is fitted into the through-hole The flange is formed.

The left and right rollers are pivotally connected to the connecting portion.

As such, the distance between the left and right rollers and the right and left rollers can be adjusted in the same principle as adjusting the vertical height of the roller 160 described above.

That is, when the screw 230 is rotated, the screw 230, the connection part, and the left and right rollers move to the left or right with respect to the nut part 230 and the left and right roller housings 210.

And an upper roller 350 and a lower roller 320 disposed below the upper roller 350, and the upper and lower rollers whose shafts are disposed in the left and right directions and are in line contact with the upper and lower surfaces of the rail are the front side and the rear of the heat treatment unit. A plurality of each is arranged on the side.

The upper roller 350 and the lower roller 320 are installed in the upper and lower roller housings 310.

The upper roller 350 is installed to adjust the height of the upper and lower roller housing 310, the lower roller 320 is installed to be rotatable in the upper and lower roller housing 310.

A through hole into which the screw 352 is inserted is formed in the upper and lower roller housings 310, and a nut part 353 is installed on the upper surface of the upper and lower roller housings 310 so as to communicate with the through holes.

Here, a plurality of nut parts 353 may be provided to prevent loosening.

The screw 352 and the upper roller 350 are connected through a connecting portion 351 including upper and lower surfaces connecting both sides and both sides.

The upper and lower roller housings 310 are provided with guide grooves for guiding the connecting portion 351 on both sides.

The screw 352 is rotatably mounted in the through hole formed in the connection part 351, and the screw 352 is provided on the outside and the inside of the connection part 351 when the screw 352 is fitted into the through hole. Flange is formed on the outer circumferential surface so as to be respectively disposed in the.

The upper roller 350 is connected to both shafts to be rotatable to the connecting portion 351.

As such, the height of the upper roller 350 can be adjusted in the same principle as adjusting the vertical height of the roller 160 described above.

That is, when the screw 352 is rotated, the screw 352, the connection part 351, and the upper roller 350 move upward or downward with respect to the nut part 353 and the upper and lower roller housings 310. Done.

The upper and lower rollers and the left and right rollers are alternately arranged, and are disposed above the work table.

That is, the first left and right rollers, the first up and down rollers, the second left and right rollers, the second up and down rollers, the third left and right rollers, the guide molds 140 and 140b, the heat treatment part, the guide molds 140 and 140b and the fourth left and right rollers. , The third upper and lower rollers, the fifth left and right rollers, and the fourth upper and lower rollers are arranged in this order.

Thus, the left and right rollers and the up and down rollers are provided, the upper and lower rollers are in line contact with the upper and lower surfaces of the rail and the left and right rollers are in linear contact with the left and right sides of the rail, thereby guiding the rail more effectively.

The driving unit is provided with a motor 600 to move the rail by rotating the lower roller 320.

The first bevel gear 610 is installed on the rotation shaft of the motor 600.

The second bevel gear 410 is meshed with the first bevel gear 610.

The angle formed between the axis of the first bevel gear 610 and the axis of the second bevel gear 410 is perpendicular.

The drive shaft 420 is coupled to the shaft of the second bevel gear 410.

A support bracket for supporting the drive shaft 420 is installed on the workbench.

The support bracket includes a bent portion surrounding the drive shaft 420 and a bent portion formed by bending at both lower sides of the bent portion.

The bent portion is formed with a through hole through which the bolt is inserted, the support bracket is installed on the workbench.

In order to effectively rotate the drive shaft 420, a bearing is installed between the support bracket and the drive shaft 420.

A plurality of third bevel gears 440 are installed on the drive shaft 420 at intervals.

The third bevel gear 440 is disposed to correspond to where the lower roller 320 is located.

Although the fourth bevel gear 450 is illustrated in FIG. 7 only in the three lower rollers 320, the fourth bevel gear 450 may be provided only in some of the lower rollers 320. The fourth bevel gear 450 may be installed on all the lower rollers 320.

The axial direction of the third bevel gear 440 is installed to be the same as the axial direction of the second bevel gear 410.

The fourth bevel gear 450 meshed with the third bevel gear 440 is connected to the shaft of the lower roller 320.

Therefore, when the fourth bevel gear 450 rotates, the lower roller 320 rotates.

The axial direction of the fourth bevel gear 450 is installed to be the same as the axial direction of the first bevel gear 610.

By such a structure, when the rotation shaft of the motor 600 rotates, the first bevel gear 610 connected to the rotation shaft rotates, and when the first bevel gear 610 rotates, it engages therewith. At the same time as the second bevel gear 410 rotates, the drive shaft 420 coupled to the second bevel gear 410 is rotated, and at the same time, the third bevel gear 440 installed on the drive shaft 420 is rotated. As the fourth bevel gear 450 meshed with this rotates, the lower roller 320 rotates.

Thus, by rotating the plurality of lower rollers 320 through one driving unit, it is possible to effectively move the long rail.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications or variations of the present invention without departing from the spirit and scope of the invention described in the claims below Can be carried out.

According to the linear motion rail heat treatment apparatus of the present invention as described above, there are the following effects.

The inner surface of the guide mold of the rail is in contact with the outer surface of the rail in at least two places in the longitudinal direction of the guide mold, and stably guides the long length of the rail can be effectively heat treatment, but the roller of the prior art in the prior art The rollers are in line contact in the left and right directions of the rail or in line contact in the up and down direction and thus cannot stably guide the rails.

While the prior art includes three motors connected to a plurality of rollers in line contact with the rails for straightening the rails, in the present invention, two or more contacts in the longitudinal direction in the guide mold may be provided, and only one motor may be provided. .

The guide mold is provided on both sides of the bottom portion and the bottom portion, and includes side portions disposed on both sides of the rail, and thus the guide mold is integrated, so that the installation is easy.

The guide mold has a roller which is guided in surface contact with the upper surface of the rail is disposed, and includes a bracket for supporting the roller and a screw connected to the shaft of the roller, the bracket is a nut portion to which the screw is fitted Is formed, the roller has an advantage that can support the upper surface of the rail of various heights.

In the present invention, since the distance between the rollers can be adjusted, the rails having different sizes can be stably guided or transferred.

Claims (3)

delete In the heat treatment apparatus of the linear motion rail, Heat treatment unit; It comprises a guide mold to be disposed at the front end or the rear end of the heat treatment, The inner surface of the guide mold is in contact with the outer surface of the rail in at least two places in the longitudinal direction of the guide mold, The guide mold is a linear motion rail heat treatment apparatus, characterized in that it comprises a side portion which is provided on both sides of the bottom portion and the bottom portion disposed on both sides of the rail. In the heat treatment apparatus of the linear motion rail, Heat treatment unit; It comprises a guide mold to be disposed at the front end or the rear end of the heat treatment, The inner surface of the guide mold is in contact with the outer surface of the rail in at least two places in the longitudinal direction of the guide mold, On the upper guide mold is provided with a roller for guiding line contact with the upper surface of the rail, Bracket for supporting the roller and a screw connected to the shaft of the roller, The bracket has a linear motion rail heat treatment apparatus, characterized in that the nut portion is formed is fitted.

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