CN115181834A

CN115181834A - Heat treatment equipment for linear guide rail

Info

Publication number: CN115181834A
Application number: CN202210797812.8A
Authority: CN
Inventors: 毛杰; 王凯
Original assignee: Ningbo Tusheng Laser Technology Co ltd
Current assignee: Ningbo Tusheng Laser Technology Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-10-14

Abstract

The invention discloses a heat treatment device for a guide rail, which comprises: the device comprises a feeding station and a heat treatment station, wherein the feeding station and the heat treatment station are arranged in the same direction and in a split manner; the conveying roller way is communicated with two ends of the feeding station and the heat treatment station, a pushing piece and a plurality of roller units are arranged on the conveying roller way, and the pushing piece drives the guide rail to move along the conveying roller way; the heat treatment channel is oppositely arranged on two sides of the conveying roller way and at least comprises two laser heads, and the laser heads move along with the guide rail and scan two side surfaces of the guide rail; the limit warp module is including setting up a plurality of first limit warp units in rollgang top to and locate the second limit warp unit of rollgang both sides, it is a plurality of the second limit warp the unit all the time with guide rail both sides surface point face contact, and rollgang and a plurality of first limit warp the unit all the time with guide rail upper and lower surface point face contact, effectively prevent the guide rail and warp.

Description

Heat treatment equipment for linear guide rail

Technical Field

The invention relates to the technical field of heat treatment equipment, in particular to heat treatment equipment for a guide rail.

Background

At present, the surface quenching technology is a surface heat treatment process for quenching the surface of a workpiece, aims to improve the hardness, wear resistance and fatigue strength of the surface of the workpiece, and is commonly used for parts such as shafts, gears and the like, because a core part still has higher toughness. In operation, the surface layer of the workpiece is austenitized by a rapid heating method, and then the workpiece is immediately quenched to convert the surface structure into martensite, and the core structure is basically unchanged.

The laser quenching uses high-energy laser for surface quenching, which utilizes the power controllability of the laser and can more accurately quench the surface of a workpiece. Compared with electric coil heating of high-frequency quenching, the thickness is more controllable, the hardened surface is more stable, rapid attenuation of surface and inner strength can not occur, and the obtained hardened tissue is finer and more uniform. This is an advantage of using laser as a controllable heat source for quenching.

In particular, for a long-sized miniature guide rail, the miniature guide rail is easy to deform in the heat treatment process, and the caused bending phenomenon is more obvious, the Chinese utility model patent with the publication number of CN213624237U discloses a miniature guide rail laser quenching device which is used for quenching the miniature guide rail by adopting a mode of arranging a movable laser, the guide rail is pulled by a clamping jaw mechanism, in the process, the position degree of the guide rail cannot be ensured, the laser is not uniform in quenching on the surface of the guide rail, and the risks of cracking and deformation still exist;

another guide rail quenching device in the prior art applies pressure on the upper surface of a guide rail, the pressure acting surface is fixed, the acting area occupies most area of the guide rail, the condition that the internal stress of the guide rail cannot be released after heat treatment exists after quenching, fracture and deformation are easy to occur, the precision of the guide rail is influenced, and the pressure acting surface is a plane when the guide rail is conveyed or quenched, and the guide rail is also a factor causing guide rail deformation due to installation or plane deviation between the plane and the surface of the guide rail.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a heat treatment device for a guide rail, which effectively prevents the guide rail from deforming.

The technical purpose of the invention is realized by the following technical scheme: a heat treatment apparatus for a guide rail, comprising:

the device comprises a feeding station and a heat treatment station, wherein the feeding station and the heat treatment station are arranged in the same direction and in a split manner;

the conveying roller way is communicated with two ends of the feeding station and the heat treatment station, a pushing piece and a plurality of roller units are arranged on the conveying roller way, and the pushing piece drives the guide rail to move along the conveying roller way;

the heat treatment channel is oppositely arranged on two sides of the conveying roller way and at least comprises two laser heads, and the laser heads move along with the guide rail and scan two side surfaces of the guide rail;

the deformation limiting module comprises a plurality of first deformation limiting units arranged above the conveying roller way and second deformation limiting units arranged on two sides of the conveying roller way, the plurality of second deformation limiting units are always in point-surface contact with the surfaces of two sides of the guide rail, and the conveying roller way and the plurality of first deformation limiting units are always in point-surface contact with the upper surface and the lower surface of the guide rail;

it is a plurality of first limit deformation unit is provided with the lifting action and pushes down the action, when the guide rail marchd to a first limit deformation unit below, current first limit deformation unit line pushes down the action to the vertical deformation of restriction guide rail, when the guide rail marchd to next first limit deformation unit, current first limit deformation unit line pushes down the action, last first limit deformation unit line lifting action, in order to release the guide rail internal stress.

Further, when the guide rail passes through the heat treatment channel, the first deformation limiting units positioned on two sides of the heat treatment channel are always kept in pressing-down action.

Furthermore, the deformation limiting module further comprises a plurality of driving cylinders for driving the first deformation limiting units to act, the driving cylinders are arranged at intervals, each driving cylinder is provided with at least two first deformation limiting units, and the first deformation limiting units are arranged right opposite to the roller units.

Further, the roller units are oppositely arranged on two sides of the conveying roller way, and the first deformation limiting unit is arranged between the two roller units.

Further, the second deformation limiting unit is arranged between the two first deformation limiting units, and/or the second deformation limiting unit is arranged between the two roller units.

Further, the distance between two adjacent first deformation limiting units on two driving cylinders is equal to the distance between two first deformation limiting units on one driving cylinder.

Furthermore, a plurality of sensors are arranged on one side of the conveying roller way, the sensors are arranged along the traveling direction of the guide rail, and each sensor is positioned at the front part of the first deformation limiting unit.

Further, cover between heat treatment channel and the laser head and have the barn door, be equipped with the printing opacity mouth that is used for restricting the light beam profile on the barn door, the output facula of laser head is set up to the area and is greater than the surface of treating of guide rail.

Further, the laser head angle is adjustable.

Furthermore, the width of the conveying roller way can be adjusted.

Further, be equipped with first regulating part on the feeding station, be equipped with the second regulating part on the heat treatment station, first regulating part and second regulating part gomphosis each other and through the vertical connection of bolt, the bottom of feeding station and heat treatment station still is equipped with the regulation truckle.

Compared with the prior art, the invention has the following advantages and beneficial effects: 1. the guide rail advances in the conveying roller way through the driving piece and the roller units, the second deformation limiting units are arranged on two side faces of the guide rail and keep rolling point-surface contact with the guide rail, linear advancing of the guide rail is guaranteed in the feeding process, errors of deflection of two sides are reduced, when the front end of the guide rail is close to the feeding platform, the first driving cylinder drives the first deformation limiting unit to move downwards and apply pressure to the upper surface of the guide rail, vertical deviation of the guide rail is limited, the first deformation limiting unit is in rolling point-surface contact with the guide rail, the guide rail can keep advancing under the conditions of vertical limiting and limiting of two sides, the roller units, the first deformation limiting units and the second deformation limiting units are in rolling point-surface contact with the surface of the guide rail, and on the premise that the vertical errors of the guide rail are limited by the roller units and the first deformation limiting units, levelness of contact points of the second deformation limiting units on two sides and the guide rail can be guaranteed;

2. the laser device is kept still, the guide rail moves along with the laser device and is scanned by the laser device to carry out real-time heat treatment, the area of an output light spot of the laser head can always cover the surface to be processed of the guide rail, and the completeness and uniformity of the heat treatment on the surface of the guide rail are ensured under the condition that the guide rail is limited at two sides and vertically;

3. when the guide rail moves to the lower part of the next driving cylinder, the next driving cylinder moves downwards, the previous driving cylinder moves upwards, and by the mode, the follow-up compression of the guide rail is realized, the influence of the plane deviation of the guide rail surface on the guide rail surface is avoided when the guide rail surface is compressed by a plane, and when the front end of the guide rail is about to enter a heat treatment channel, the two driving cylinders positioned at the two sides of the heat treatment channel move downwards, so that the guide rail part at the heat treatment position can be always kept compressed.

4. The quenching surface of the workpiece subjected to laser quenching heat treatment is restrained to generate compressive stress, the residual compressive stress on the surface can improve the fatigue resistance of the guide rail, the generation and the expansion of fatigue cracks are delayed, the service life of the guide rail is prolonged, and the residual uniform austenite on the surface of the guide rail is homogenized along with the real-time elongation of a stress point, so that the stress concentration is buffered, the crack expansion is inhibited, the surface layer crack is slowed down, and the surface wear resistance is improved.

5. According to the heat treatment station, the guide rail is still limited by the second deformation limiting unit and the roller unit after heat treatment, so that the guide rail can be conveniently butted with other stations at the rear part of the heat treatment station.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a front view of the rollgang of the present invention;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is a schematic structural view of a heat treatment station of the present invention;

FIG. 6 is a top view of the heat treatment station of the present invention with the drive cylinder omitted;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is a schematic structural diagram of a first deformation limiting unit and a driving cylinder according to the present invention;

FIG. 9 is an exploded view of the first and second conditioning members of the present invention;

FIG. 10 is a schematic view of the angle adjustment mechanism of the present invention;

FIG. 11 is a schematic structural view of a width adjustment mechanism of the present invention;

in the figure: 1. a feed station; 1.1, a first mounting seat;

2. a heat treatment station; 2.1, laser head; 2.2, a second mounting seat;

3. a rollgang; 3.1, a pusher; 3.2, a roller unit; 3.3, a guiding unit;

4. a deformation limiting module; 4.1, a first deformation limiting unit; 4.2, a second deformation limiting unit; 4.3, driving a cylinder;

5. a sensor; 6. a light barrier; 6.1, a light-transmitting opening;

7. a first adjustment member; 7.1, a first plate body; 7.2, caulking groove;

8. a second adjustment member; 8.1, a second plate body; 8.2, a bump;

9. a three-axis module;

10. mounting a plate; 10.1, mounting holes; 10.2, arc grooves;

11. an adjusting plate; 11.1, fixing columns; 11.2, positioning rods;

12. a plate member; 13. a bearing seat; 14. a screw; 15. a nut; 16. a hand wheel; 17. a connecting plate;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding, and are not used to define any direction or order of limitation.

As shown in fig. 1 to 11, a heat treatment apparatus for a guide rail includes:

the feeding station 1 and the heat treatment station 2 are arranged in the same direction and in a split manner, and the feeding station 1 and the heat treatment station 2 which are arranged in a split manner are convenient;

the conveying roller way 3 is arranged in the length direction of the workpiece and communicated with two ends of the feeding station 1 and the heat treatment station 2, a plurality of roller units 3.2 for bearing the lower surface of the guide rail are arranged at the bottom of the conveying roller way 3, the roller units 3.2 are oppositely arranged, so that a space is reserved between the two roller units 3.2, a pushing piece 3.1 is arranged in the space, and the guide rail is driven to move along the conveying roller way 3 by the pushing piece 3.1;

the heat treatment channel is positioned on the heat treatment station 2, oppositely arranged on two sides of the conveying roller way 3 and at least comprises two laser heads 2.1 arranged on the outer side of the conveying roller way 3, and the laser heads 2.1 move along with the guide rail and scan two side surfaces of the guide rail;

the deformation limiting module 4 comprises a plurality of first deformation limiting units 4.1 arranged above the conveying roller way 3 and second deformation limiting units 4.2 arranged on two sides of the conveying roller way 3, on the heat treatment station 2, the plurality of second deformation limiting units 4.2 are always in point-surface contact with the surfaces of two sides of the guide rail, and the conveying roller way 3 and the plurality of first deformation limiting units 4.1 are always in point-surface contact with the rolling surfaces of the upper surface and the lower surface of the guide rail;

a plurality of first limit deformation unit 4.1 is provided with the lifting action and pushes down the action, when the guide rail was advanced to a first limit deformation unit 4.1 below, current first limit deformation unit 4.1 went down to push down the action to the vertical deformation of restriction guide rail, when the guide rail was advanced to next first limit deformation unit 4.1, current first limit deformation unit 4.1 went down to push down the action, last first limit deformation unit 4.1 went up to lift the action, in order to release the guide rail internal stress.

When the guide rail is through heat treatment passageway, carry out heat treatment, the inside residual internal stress of guide rail is offset or release, and the first limit deformation unit 4.1 that is located the both sides of heat treatment passageway keeps the action of pushing down all the time, guarantee that the guide rail position at the heat treatment position can be kept compressing tightly all the time, make the guide rail surface along rollgang 3 in proper order even carry out heat treatment, guarantee the internal stress evenly distributed of each position of guide rail, reduce the stack of internal stress, along with the guide rail is through heat treatment passageway, the stress point interval at its both ends can real-time extension, be favorable to the release of guide rail internal stress, reduce the bending and the fracture of guide rail, guarantee that the sclerosis layer forms even acicular martensite.

As shown in fig. 3 and 8, the deformation limiting module 4 further includes a plurality of driving cylinders 4.3 for driving the first deformation limiting units 4.1 to operate, the plurality of driving cylinders 4.3 are arranged at intervals, and each driving cylinder 4.3 is provided with at least two first deformation limiting units 4.1.

As shown in fig. 2, 4 and 7, as an arrangement manner of the first deformation limiting unit 4.1, the first deformation limiting unit 4.1 is arranged right opposite to the roller unit 3.2, and through the above improvement, the stress points on the upper surface and the lower surface of the guide rail are opposite in the positive direction, which is beneficial to the straightening of the guide rail in the conveying roller table 3 and the stability of the running.

Specifically, roller unit 3.2 sets up in the both sides of rollgang 3 relatively, increases the stress point with the contact of deflector roll lower surface, just first limit deformation unit 4.1 is just to setting up between two roller units 3.2, is favorable to the guide rail internal stress to extend towards both sides, improves stress uniformity.

In this embodiment, as an arrangement manner of the first deformation limiting unit 4.1 and the second deformation limiting unit 4.2, the second deformation limiting unit 4.2 is arranged between the two first deformation limiting units 4.1 along the length direction of the conveying roller 3, and the distance between the two first deformation limiting units 4.1 and the middle first deformation limiting unit 4.1 in the length direction is equal.

And/or the second deformation limiting units 4.2 are arranged between the two roller units 3.2, and the distance between the two second deformation limiting units 4.2 and the middle roller unit 3.2 in the length direction is equal.

As a setting mode of the first deformation limiting units 4.1 on the driving cylinders 4.3, two first deformation limiting units 4.1 are arranged on each driving cylinder 4.3 along the length direction of the conveying roller way 3, and the distance between two adjacent first deformation limiting units 4.1 on the two driving cylinders 4.3 is equal to the distance between two first deformation limiting units 4.1 on one driving cylinder 4.3.

The pair roller unit 3.2, the first deformation limiting unit 4.1 and the second deformation limiting unit 4.2 are arranged at equal intervals, so that stress points of the guide rail at all positions in the advancing process are uniform, the pressure stress of retained austenite on the surface of the guide rail is uniformly distributed after heat treatment, the martensite after heat treatment improves the surface hardness, and the guide rail is effectively prevented from being warped and cracked.

In the present embodiment, the first deformation limiting unit 4.1 and the second deformation limiting unit 4.2 can be selected as a guide wheel or a bearing member.

As can be seen from fig. 6, in this embodiment, in order to realize the follow-up pressing and lifting of the driving cylinder 4.3, a plurality of sensors 5 are arranged on the heat treatment station 2 at one side of the conveying roller table 3, a plurality of sensors 5 are arranged along the traveling direction of the guide rail, and each sensor 5 is arranged in front of the first deformation limiting unit 4.1, and the sensors 5 can be selected as proximity switches.

Wherein, the heat treatment platform is also provided with a wire clamp.

As a further development of the heat treatment tunnel, the width of the heat treatment tunnel is equal to the spacing between the two roller units 3.2.

Through the improvement, the descending first deformation limiting units 4.1 apply static load to the workpiece, the position of residual internal stress is beneficial to yielding, so that the residual stress is relaxed, and meanwhile, the first deformation limiting units 4.1 on two sides of the heat treatment channel and the subsequent first deformation limiting units 4.1 pressed down in real time form inching stretching effect, so that the maximum position of the residual stress of the workpiece is beneficial to being evenly spread.

As shown in fig. 5, in order to prevent the laser beam from acting on the parts or components other than the surface of the guide rail, a light barrier 6 is covered between the heat treatment channel and the laser head 2.1, a light transmission opening 6.1 for limiting the beam profile is arranged on the light barrier 6, the light transmission opening 6.1 is only used for the laser beam to pass through in the expected size, and the output light spot of the laser head 2.1 is set to be larger than the surface to be processed of the guide rail in area, so as to ensure the complete heat treatment of the surface of the guide rail and the uniformity of the heat treatment.

In other embodiments, as shown in fig. 10, the laser head 2.1 is angularly adjustable, and an angle adjusting mechanism is connected to the laser head 2.1, the angle adjusting mechanism comprising:

the three-axis module 9 is arranged on two sides of the conveying roller way 3, and the three-axis module 9 comprises adjusting modules arranged in the X direction, the Y direction and the Z direction;

the mounting plate 10 is arranged at the action tail end of the triaxial module 9;

regulating plate 11, laser head 2.1 sets up on regulating plate 11 through a curb plate, be equipped with fixed column 11.1 on regulating plate 11 to and stretch out at least one locating lever 11.2 in fixed column 11.1 week side, be equipped with on the mounting panel 10 and be used for supplying fixed column 11.1 at its internal rotation's mounting hole 10.1, and supply the arc groove 10.2 that locating lever 11.2 was put into, locating lever 11.2 rotates and slides in arc groove 10.2 along with laser head 2.1, just fixed column 11.1 is fixed in through nut 15 mounting hole 10.1 department to inject the current angle of laser head 2.1.

When laser head 2.1 position is adjusted to needs, only need elasticity nut 15 can rotate laser head 2.1, and laser head 2.1 still is injectd on mounting panel 10 by the locating lever 11.2 on the regulating plate 11, makes things convenient for operating personnel manual regulation, and in accommodation process, a plurality of locating levers 11.2 are favorable to reducing the plane error between regulating plate 11 and the mounting panel 10, improve the precision of laser head 2.1 angle modulation.

As a further explanation for the adjusting module, the adjusting module includes a sliding seat, a guide rod penetrating through the sliding seat, and a sliding block sleeved on the guide rod, the sliding block is used for installing the sliding seat of another adjusting module, and a screw rod module is further penetrated through the sliding seat, the screw rod module is in transmission connection with the sliding block, wherein the screw rod module can be driven to rotate by a hand wheel 16.

In this embodiment, as a further explanation of the installation position of the triaxial module 9, the adjusting module arranged in the Z direction is located at the end of the action of the triaxial module 9, and the mounting plate 10 is vertically arranged, so that the laser head 2.1 performs angle adjustment with respect to the vertical plane where the heat treatment channel is located.

As shown in fig. 11, in particular, the width of the rollgang 3 is adjustable.

Feeding station 1 and heat treatment station 2 all include two relative plate 12 that set up, two form rollgang 3 between the plate 12, second limit deformation unit 4.2 and roller unit 3.2 locate on the plate 12, just be equipped with width adjustment mechanism between two plates 12, width adjustment mechanism is used for the drive plate 12 relative movement to the work piece of reply different width improves the adaptability that the direction was carried.

As a further embodiment of the width adjusting mechanism, the width adjusting mechanism includes a bearing seat 13 fixed below the plate 12, a screw 14 passing through the bearing seat 13, and nuts 15 disposed at two ends of the screw 14, and the nuts 15 are fixedly connected with the plate 12 through a connecting plate 17.

Specifically, the bearing frame 13 is fixed on the mounting bracket of plate chain transfer chain, screw rod 14 is two-way screw rod 14, connecting plate 17 includes diaphragm and two risers, nut 15 is fixed on the diaphragm, and the lower extreme of two risers is fixed at the both ends of diaphragm, and the upper end of two risers is fixed with plate 12 to realize width adjustment mechanism and plate 12's transmission.

Alternatively, to provide a driving force to the bidirectional screw 14, a hand wheel or an electric cylinder may be used for driving, and a coupling may be provided between the electric cylinder and the bidirectional screw 14 for transmission, as will be appreciated by those skilled in the art.

As shown in fig. 6, as a further explanation of the feeding station 1, on the feeding station 1, a single-side guiding unit 3.3 is arranged outside the rollgang 3, and the guiding unit 3.3 can keep rolling point-surface contact with the surface of the guide rail, wherein the length of the rollgang 3 with one side being vacant can be matched with that of the guide rail, and when feeding is performed, the guide rail can be inserted from the vacant side and is attached to the guiding unit 3.3, so that the guide rail is kept in a posture in the same direction as the rollgang 3 when entering the rollgang 3 of the heat treatment station 2, and at the same time, the arrangement mode avoids the interference of the guide rail with the second deformation limiting units 4.2 at both sides of the heat treatment station 2 and unnecessary shearing stress when the guide rail is inserted.

Optionally, the guiding unit 3.3 is selected as a guiding wheel or a bearing member.

As shown in fig. 9, in other embodiments, in order to improve the stability of the guide rail when entering the conveying roller 3, a first adjusting part 7 is arranged on the feeding station 1, a second adjusting part 8 is arranged on the discharging platform, the first adjusting part 7 and the second adjusting part 8 are embedded with each other and vertically connected through a bolt, and adjusting casters are further arranged at the bottoms of the feeding station 1 and the discharging platform.

Specifically, the first adjusting piece 7 is provided with a first plate body 7.1, an embedding groove 7.2 is formed in the first plate body 7.1, a first mounting seat 1.1 for the first plate body 7.1 to sink into is arranged on the feeding station 1, and the first plate body 7.1 is fixed on the first mounting seat 1.1 through a vertical bolt;

second regulating part 8 has second plate body 8.1, second plate body 8.1 stretches out to be equipped with lug 8.2, the embedding that lug 8.2 can splice is in caulking groove 7.2, through vertical bolt fastening between lug 8.2 and the caulking groove 7.2, just be equipped with on the thermal treatment platform and supply second plate body 8.1 to sink the second mount pad 2.2 of putting into, second plate body 8.1 is through vertical bolt fastening on second mount pad 2.2.

Through the improvement, when carrying out feeding station 1 and the installation of heat treatment station 2, can be through first plate body 7.1 of bolt regulation, second plate body 8.1, and the lug 8.2 and the vertical position between the caulking groove 7.2, and, heat treatment station 2 sets up the regulation truckle with the bottom of feeding station 1, thereby can adjust heat treatment station 2 and the holistic vertical position of feeding station 1, through vertical bolt and the fine setting of regulation truckle, can finely tune the vertical deviation of rollgang 3, thereby guarantee the levelness that the guide rail marchd.

In addition, the feeding station 1 and the heat treatment station 2 which are arranged in a split mode are convenient to transport, and the packaging size is reduced.

As an implementation manner of driving the guide rail to move in the conveying roller table 3, a plate chain conveying line for providing power is arranged at the bottom of the conveying roller table 3, and is specifically arranged below the feeding station 1 and the heat treatment station 2, at least one pushing piece 3.1 is arranged on the plate chain conveying line, and the pushing piece 3.1 extends out of the conveying roller table 3 and abuts against the end face of the guide rail, so that the guide rail is pushed to move along the conveying roller table 3.

Optionally, the pushing member 3.1 vertically extends out of the conveying roller table 3, and the surface of the pushing member 3.1 can approximately match with the end surface of the guide rail, so as to ensure stable pushing of the guide rail.

In particular, the pusher 3.1 is arranged between two roller units 3.2.

According to the heat treatment station, the guide rail is still limited by the second deformation limiting unit and the roller unit after heat treatment, so that the rear part of the heat treatment station is convenient to butt against other stations, such as other shaping stations for correction and the like.

In other embodiments, as another follow-up action mode of the driving cylinder 4.3, the driving cylinder 4.3 performs lifting and descending actions at intervals, so as to increase the compression on the rear part of the guide rail, and further improve the straightening effect of the guide rail by increasing the compression frequency.

As an example, when the rail travels below the first drive cylinder 4.3, the first drive cylinder 4.3 travels downward;

when the guide rail moves to the position below the second driving cylinder 4.3, the second driving cylinder 4.3 moves downwards, and the first driving cylinder 4.3 moves upwards simultaneously;

when the guide rail travels to the position below the third driving cylinder 4.3, the third driving cylinder 4.3 descends, meanwhile, the second driving cylinder 4.3 ascends, and the first driving cylinder 4.3 descends.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A heat treatment apparatus for a guide rail, comprising:

the device comprises a feeding station (1) and a heat treatment station (2), wherein the feeding station (1) and the heat treatment station (2) are arranged in the same direction and in a split manner;

the conveying roller way (3) is communicated with two ends of the feeding station (1) and the heat treatment station (2), a pushing piece (3.1) and a plurality of roller units (3.2) are arranged on the conveying roller way (3), and the pushing piece (3.1) drives the guide rail to move along the conveying roller way (3);

the heat treatment channel is oppositely arranged on two sides of the conveying roller way (3) and at least comprises two laser heads (2.1), and the laser heads (2.1) move along with the guide rail and scan two side surfaces of the guide rail;

the deformation limiting module (4) comprises a plurality of first deformation limiting units (4.1) arranged above the conveying roller way (3) and second deformation limiting units (4.2) arranged on two sides of the conveying roller way (3), the second deformation limiting units (4.2) are always in point-surface contact with the surfaces of two sides of the guide rail, and the roller units (3.2) and the first deformation limiting units (4.1) are always in point-surface contact with the upper surface and the lower surface of the guide rail;

the first deformation limiting units (4.1) are provided with lifting actions and pressing actions, when the guide rail travels to the lower side of one first deformation limiting unit (4.1), the current first deformation limiting unit (4.1) performs the pressing action to limit the vertical deformation of the guide rail, when the guide rail travels to the next first deformation limiting unit (4.1), the current first deformation limiting unit (4.1) performs the pressing action, and the previous first deformation limiting unit (4.1) performs the lifting action.

2. A heat treatment apparatus for guide rails according to claim 1, characterized in that: when the guide rail passes through the heat treatment channel, the first deformation limiting units (4.1) positioned at two sides of the heat treatment channel are always kept to press down.

3. A heat treatment apparatus for guide rails according to claim 1, characterized in that: the deformation limiting module (4) further comprises a plurality of driving cylinders (4.3) used for driving the first deformation limiting unit (4.1) to act, the driving cylinders (4.3) are arranged at intervals, each driving cylinder (4.3) is provided with at least two first deformation limiting units (4.1), and the first deformation limiting units (4.1) are arranged right opposite to the roller units (3.2).

4. A heat treatment apparatus for guide rails according to claim 1, characterized in that: the roller units (3.2) are oppositely arranged on two sides of the conveying roller way (3), and the first deformation limiting unit (4.1) is arranged between the two roller units (3.2) in a right-to-right mode.

5. A heat treatment apparatus for guide rails according to claim 1, characterized in that: the second deformation limiting unit (4.2) is arranged between the two first deformation limiting units (4.1) and/or the second deformation limiting unit (4.2) is arranged between the two roller units (3.2).

6. A heat treatment apparatus for guide rails according to claim 1, characterized in that: the distance between two adjacent first deformation limiting units (4.1) on the two driving cylinders (4.3) is equal to the distance between the two first deformation limiting units (4.1) on one driving cylinder (4.3).

7. A heat treatment apparatus for guide rails according to claim 1, characterized in that: one side of the conveying roller way (3) is provided with a plurality of sensors (5), the sensors (5) are arranged along the advancing direction of the guide rail, and each sensor (5) is positioned at the front part of the first deformation limiting unit (4.1).

8. A heat treatment apparatus for guide rails according to claim 1, characterized in that: hide between heat treatment channel and laser head (2.1) and have covered barn door (6), be equipped with printing opacity mouth (6.1) that are used for restricting the light beam profile on barn door (6), the output facula of laser head (2.1) is set up to the area and is greater than the surface of treating of guide rail.

9. A heat treatment apparatus for guide rails according to claim 1, characterized in that: the width of the conveying roller way (3) can be adjusted, and the angle of the laser head (2.1) can be adjusted.

10. A heat treatment apparatus for guide rails according to claim 1, characterized in that: be equipped with first regulating part (7) on feeding station (1), be equipped with second regulating part (8) on heat treatment station (2), mutual gomphosis of first regulating part (7) and second regulating part (8) is and through the vertical connection of bolt, the bottom of feeding station (1) and heat treatment station (2) still is equipped with the regulation truckle.