KR102815836B1 - Induction Heating Apparatus for Bonded Bush Stabilizer Bar of Automobile Suspension, and Bonded Bush Stabilizer Bar Induction Heating Method Thereof - Google Patents

Abstract

The present invention relates to an induction heating device for a bonded bush stabilizer bar of an automobile suspension, which comprises a support unit equipped with a plurality of first jigs spaced apart at regular intervals along a return direction, a return unit equipped with a plurality of second jigs spaced apart at the same interval as the interval between the first jigs and which returns a stabilizer bar mounted on the first jig to the first jig arranged adjacently in the return direction, and an induction heating unit equipped with first and second coils arranged so as to face stabilizer bar mounting portions of the first and second jigs and capable of approaching or retracting from the support unit, thereby enabling simultaneous induction heating of bushing bonding surfaces of a plurality of stabilizer bars, thereby increasing the efficiency of an adhesive activation process of the bonded bush stabilizer bar, and a method for induction heating a bonded bush stabilizer bar using the same.

Description

{Induction Heating Apparatus for Bonded Bush Stabilizer Bar of Automobile Suspension, and Bonded Bush Stabilizer Bar Induction Heating Method Thereof}

The present invention relates to an induction heating device for activating an adhesive surface of a bush provided in a stabilizer bar constituting an automobile suspension. More specifically, the device comprises a support unit having a plurality of first jigs spaced apart at a predetermined interval along a return direction, a return unit having a plurality of second jigs spaced apart at a distance equal to the distance between the first jigs and returning a stabilizer bar mounted on the first jig to a first jig arranged adjacent to the return direction, and an induction heating unit having first and second coils arranged so as to face stabilizer bar mounting portions of the first and second jigs and capable of approaching or retracting from the support unit. The present invention relates to an induction heating device for an automobile suspension bonded bush stabilizer bar, which can increase the efficiency of an adhesive activation process of a bonded bush stabilizer bar by simultaneously enabling induction heating of the bush adhesive surfaces of a plurality of stabilizer bars, and an induction heating method for a bonded bush stabilizer bar using the same.

In general, both ends of a vehicle stabilizer bar (1) are connected to lower sheets on both sides that support the coil springs and shock absorbers of the suspension, and the center of the stabilizer bar (1) is fixed to the lower part of the vehicle body through a bracket (11), so that when the vehicle body tilts due to uneven road surfaces or inertia while the vehicle is driving, the vehicle body tilt is quickly restored by the self-elastic restoring force of the stabilizer bar (1).

In order to prevent damage to the fixing part between the stabilizer bar (1) and the bracket (11) due to impact acting as a suspension device while the vehicle is driving, a rubber bush (10) is inserted and fixed between the stabilizer bar (1) and the bracket (11), and a bonded bush stabilizer bar structure is applied in which the fixing surface between the stabilizer bar (1) and the bush (10) is bonded using an adhesive to prevent foreign substances from entering through the gap between the fixing surface of the stabilizer bar (1) and the bush (10).

When manufacturing a bonded bush stabilizer bar, the adhesive applied to the stabilizer bar (10) is activated by heating it to a temperature higher than the vulcanization reaction bonding initiation temperature, and the activation of the adhesive is accomplished by heating the stabilizer bar (10) by placing it in a heating furnace or induction coil.

As an example for adhesive activation of a bonded bush stabilizer bar, the applicant of the present invention has proposed a method for manufacturing a stabilizer bar bonded with a rubber bush, as in Korean Patent Publication No. 10-2247766 (registered on April 28, 2021).

Patent registration No. 10-2247766 comprises a pretreatment process for the bonding surface of a stabilizer bar and a rubber bush, a process for inductively heating the bonding surface of the stabilizer bar to a set temperature within the range of 180 to 230°C, a bonding preparation process for applying an adhesive to the bonding surface of the rubber bush, a process for assembling the stabilizer bar and the rubber bush, placing them on an assembly jig, and then applying a compressive force to bond them, a post-heating process for passing the assembled stabilizer bar and rubber bush in a compressed state through a heating furnace at 170 to 200°C to maintain the temperature of the adhesive, and a removal process for removing the assembled stabilizer bar and the rubber bush from the assembly jig.

However, with the conclusion of the Paris Agreement in 2015, environmental regulations for reducing carbon emissions are being strengthened, and there is a need to reduce carbon emissions by omitting the heating furnace equipment that performs atmosphere heating through the combustion heat of gas in the post-heating process of the existing stabilizer bar manufacturing method, such as Patent No. 10-2247766, and using only the induction coil equipment that does not generate combustion gas.

In addition, in the existing stabilizer bar manufacturing method, the efficiency of stabilizer bar manufacturing is reduced because a post-heating process is added in which the adhesive surface of the stabilizer bar is heated through induction heating to activate the adhesive, the rubber bush is bonded and compressed, and then the assembly of the stabilizer bar and rubber bush is put back into the heating furnace to maintain the temperature of the adhesive.

In particular, since it is necessary to separately install induction coil equipment and heating equipment, and the process of transferring the stabilizer bar, whose adhesive has been activated in the induction coil equipment, to the assembly jig, the process of bonding the rubber bush to the stabilizer bar, and the process of compressing the rubber bush are all performed in separate production lines, there was a problem of requiring a large site to build the production line.

Republic of Korea Patent Publication No. 10-2247766 (registered on April 28, 2021)

In an embodiment of the present invention, a support unit is provided with a plurality of first jigs spaced apart at a predetermined interval along a return direction, a return unit provided with a plurality of second jigs spaced apart at a distance equal to the distance between the first jigs and returning a stabilizer bar mounted on the first jig to a first jig arranged adjacent to the return direction, and an induction heating unit having first and second coils arranged so as to face stabilizer bar mounting portions of the first and second jigs and capable of approaching or retracting from the support unit, thereby enabling simultaneous induction heating of bushing bonding surfaces of a plurality of stabilizer bars, thereby increasing the efficiency of an adhesive activation process for a bonded bush stabilizer bar and miniaturizing stabilizer bar production equipment, and an induction heating method for a bonded bush stabilizer bar using the same for an automobile suspension device.

An induction heating device for a bonded bush stabilizer bar of an automobile suspension according to an embodiment of the present invention comprises: a support unit having a plurality of first jigs spaced apart at a predetermined interval along a return direction that is perpendicular to an axial direction of the stabilizer bar; a return unit having a plurality of second jigs spaced apart at a distance equal to a distance between the first jigs along a return direction that is perpendicular to the axial direction of the stabilizer bar, and arranged opposite to an axial side of the stabilizer bar of the support unit, the return unit returning the stabilizer bar secured to the first jig to the first jig arranged adjacent to the return direction; And, it includes an induction heating unit, which is provided with a plurality of first and second coils arranged so as to face the stabilizer bar mounting portions of the first and second jigs and spaced apart at intervals equal to the spacing between the first jigs along a return direction that is perpendicular to the axial direction of the stabilizer bar, and is capable of linearly reciprocating in a direction approaching or retreating from the support unit, so that when the bush provided on the stabilizer bar mounted on the first jig approaches the support unit, the bush inductively heats the bonding surface of the bush of the stabilizer bar while being placed between the first and second coils.

According to an embodiment of the present invention, the first and second coils are respectively arranged to face each other and spaced apart from each other along the axial direction of the stabilizer bar with the bush provided on the surface of the stabilizer bar as the center, and an opening may be formed through which the stabilizer bar, which is secured to the first jig, can enter and exit while partially surrounding the outer surface of the stabilizer bar except for the first and second jig arrangement directions so as to be spaced apart from the outer surface of the stabilizer bar along the radial direction of the stabilizer bar.

According to an embodiment of the present invention, the induction heating unit may be composed of a temperature raising unit positioned at the start of the stabilizer bar return to raise the temperature of the bush bonding surface of the stabilizer bar, and a heat retention unit to maintain the temperature of the bush bonding surface raised by the temperature raising unit.

According to an embodiment of the present invention, the induction heating unit may be positionally adjustable along the stabilizer bar axis.

According to an embodiment of the present invention, a pair of centering units may be arranged oppositely along the axial direction of the stabilizer bar at an axial outer side of the stabilizer bar return start portion of the support units, the centering units temporarily pressuring both ends of the stabilizer bar secured to the first jig toward the center of the stabilizer bar to align the axial position of the stabilizer bar of the bush.

According to an embodiment of the present invention, a pair of guide units, each supporting an axial end of the stabilizer bar, are arranged parallel to the support units on the axial outer side of the stabilizer bar, and the guide units can be positionally adjusted according to the axial arrangement interval of the stabilizer bar and the vertical direction.

According to an embodiment of the present invention, a skid unit is disposed at the end of the stabilizer bar return completion portion of the support unit, from which the stabilizer bar, for which induction heating of the bushing bonding surface has been completed, is removed, and the skid unit is provided with an inclined surface whose upper surface height decreases as it moves away from the support unit, and a stopper for stopping the stabilizer bar moving along the inclined surface may be provided at an end of the inclined surface opposite to the support unit arrangement direction.

According to an embodiment of the present invention, at least one of the first jigs, including the first jig arranged at the start of the return of the stabilizer bar of the support unit, may be provided with a sensor for detecting whether the stabilizer bar is settled.

According to an embodiment of the present invention, the first and second jigs may be formed as a concave groove having a V-shaped cross-section whose central height is formed lower than the heights of the start and end ends of the return of the stabilizer bar.

According to an embodiment of the present invention, the return unit is slidably connected to the upper part of the return frame through a slide rail formed at the bottom, and is connected to a first actuator provided on the return frame so that when the first actuator is operated, the stabilizer bar can reciprocate in the return direction and in the opposite direction of the return direction, and when the second actuator provided on the return frame is operated, the return unit can reciprocate up and down together with the return frame.

According to an embodiment of the present invention, the surfaces of the first and second coils may be provided with one or more shielding materials that partially shield the electromagnetic fields formed by the first coil and the second coil and control the direction of electromagnetic field emission.

According to an embodiment of the present invention, a bonded bush stabilizer bar induction heating method using an induction heating device for a bonded bush stabilizer bar of an automobile suspension device comprises: a stabilizer bar mounting step of mounting the stabilizer bar onto a first jig located at an end of a stabilizer bar return start portion of a support unit provided with a plurality of first jigs spaced apart at a predetermined interval along a return direction that is perpendicular to the stabilizer bar axial direction; a stabilizer bar returning step of returning the stabilizer bar mounted on the first jig to a first jig arranged adjacent to the return direction side through a return unit provided with a plurality of second jigs spaced apart at a interval equal to the interval between the first jigs along the return direction that is perpendicular to the stabilizer bar axial direction and disposed opposite to the stabilizer bar axial side of the support unit; A coil arrangement step of approaching an induction heating unit equipped with a plurality of first and second coils arranged so as to face the stabilizer bar mounting portions of the first and second jigs and spaced apart at a spacing equal to the spacing between the first jigs along a return direction that is perpendicular to the axial direction of the stabilizer bar, and arranging a bush provided on the stabilizer bar mounted on the first jig between the first and second coils; an induction heating step of inductively heating the bushing bonding surface of the stabilizer bar through the first and second coils; a coil separation step of withdrawing the induction heating unit from the support unit and separating the first and second coils from the bush; an adhesive activation step of repeatedly performing the stabilizer bar mounting step and the coil separation step until the stabilizer bar mounted on the first jig is returned to the first jig located at the end of the stabilizer bar return completion portion; And, it includes a stabilizer bar removal step of removing the stabilizer bar returned to the first jig located at the end of the stabilizer bar return completion section from the support unit.

According to an embodiment of the present invention, the induction heating unit is configured with a temperature raising unit arranged at the start of the stabilizer bar return to raise the temperature of the bushing bonding surface of the stabilizer bar, and a heat keeping unit to maintain the temperature of the bushing bonding surface raised by the temperature raising unit, and in the induction heating step, the temperature of the bushing bonding surface can be raised through the temperature raising unit and the temperature of the bushing bonding surface can be maintained through the heat keeping unit.

According to an embodiment of the present invention, at least one of the first jigs including the first jig arranged at the end of the stabilizer bar return start portion of the support unit is provided with a sensor for detecting whether the stabilizer bar is seated, and the stabilizer bar return step can be performed only when the seated state of the stabilizer bar to the first jig is detected through the sensor.

According to an embodiment of the present invention, a pair of centering units are provided on the outer side of the stabilizer bar axial direction of the stabilizer bar return start portion of the support unit to temporarily press both ends of the stabilizer bar secured to the first jig toward the center of the stabilizer bar to align the axial position of the bush in the stabilizer bar, and the centering units are arranged so as to face each other along the axial direction of the stabilizer bar, and when the stabilizer bar is secured to the first jig in the stabilizer bar securing step, the position of the bush can be aligned through the centering units.

According to an embodiment of the present invention, a support unit is provided with a plurality of first jigs spaced apart at regular intervals along a return direction, a return unit provided with a plurality of second jigs spaced apart at the same interval as the interval between the first jigs and returning a stabilizer bar mounted on the first jig to the first jig arranged adjacently on the return direction side, and an induction heating unit provided with first and second coils arranged so as to face stabilizer bar mounting portions of the first and second jigs and capable of approaching or retracting from the support unit, thereby enabling simultaneous induction heating of bushing bonding surfaces of a plurality of stabilizer bars, improving the efficiency of an adhesive activation process of a bonded bush stabilizer bar, and enabling miniaturization of production facilities for the bonded bush stabilizer bar.

FIGS. 1A to 1C are drawings showing examples of a body fixing structure of a stabilizer bar through a bracket, a bushing structure combined with the bracket, and a bushing combining position on a surface of the stabilizer bar, respectively.
FIGS. 2 to 4 are drawings showing the arrangement structure between each unit of an induction heating device for a bonded bush stabilizer bar of an automobile suspension according to an embodiment of the present invention.
FIG. 5 is a drawing showing the overall structure of a return unit according to an embodiment of the present invention.
FIG. 6 is a drawing showing a second jig shape of a return unit and a connection structure between a slide rail and a slider according to an embodiment of the present invention.
FIG. 7 is a drawing showing an example of a first jig shape of a support unit according to the present invention and a sensor equipped on the first jig.
FIG. 8 is a drawing showing the arrangement relationship of a heating unit and a heat retention unit provided in an induction heating unit according to an embodiment of the present invention.
FIG. 9 is a drawing showing an embodiment of the first and second coils equipped with shielding material according to the present invention.
FIG. 10 is a drawing showing the first and second coil opposing arrangement structures according to an embodiment of the present invention and the arrangement positions of brackets for performing an adhesive activation process.
Figure 11 is a drawing showing an example of the arrangement position and structure of a skid unit according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

When describing embodiments of the present invention, descriptions of technical contents that are well known in the technical field to which the present invention belongs and are not directly related to the present invention will be omitted.

This is to convey the gist of the present invention more clearly without obscuring it by omitting unnecessary explanation.

In addition, when describing components of the present invention, different reference numerals may be given to components with the same name depending on the drawings, and the same reference numerals may be given to different drawings.

However, even in such cases, this does not mean that the components have different functions depending on the embodiment, or that they have the same function in different embodiments, and the function of each component should be judged based on the description of each component in the embodiment.

In addition, the technical terms used in this specification should be interpreted as having a meaning generally understood by a person of ordinary skill in the art to which the present invention belongs, unless specifically defined otherwise in this specification, and should not be interpreted in an overly comprehensive or overly narrow sense.

Additionally, singular expressions used herein include plural expressions unless the context clearly indicates otherwise.

In this application, the terms “consisting of” or “comprising” should not be construed to necessarily include all of the various components or various steps described in the specification, and should be construed to mean that some of the components or some of the steps may not be included, or that additional components or steps may be included.

An induction heating device for a bonded bush stabilizer bar of an automobile suspension according to the present invention and an induction heating method for a bonded bush stabilizer bar using the same partially heat only the joining surface of a stabilizer bar (1) and a bush (10), thereby preventing a decrease in the durability performance of the stabilizer bar (1) during an adhesive activation process of the bonded bush stabilizer bar through induction heating.

To this end, the induction heating device for a bonded bush stabilizer bar of an automobile suspension according to the present invention comprises a support unit (100) on which a plurality of stabilizer bars (1) are mounted, a return unit (200) that returns the stabilizer bars (1) mounted on the support unit (100) along a return direction, and an induction heating unit (300) that inductively heats the bonding surface of a bush (10) provided on the stabilizer bars (1) mounted on the support unit (100) to activate an adhesive.

Hereinafter, in the present invention, when a stabilizer bar (1) formed of a rod-shaped member having a circular or oval cross-section is placed on a support unit (100), the direction A toward which the central axis of the stabilizer bar (1) faces is defined as the axial direction, and the direction T in which the stabilizer bar (1) is returned by a return unit (200) while being perpendicular to the axial direction is defined as the return direction, thereby explaining the configuration and arrangement structure of an induction heating device for a bonded bush stabilizer bar of an automobile suspension device.

The support unit (100) is equipped with a plurality of first jigs (110), and each of the first jigs (110) arranged adjacent to each other are spaced apart at a certain interval along the return direction, and a return unit (200) is arranged on the axial side of the support unit (100) so as to face the support unit (100).

The return unit (200) is equipped with a plurality of second jigs (210), and each of the second jigs (210) arranged adjacent to each other is spaced apart from each other by an interval equal to the spacing between the first jigs (110) arranged adjacent to each other along the return direction.

The heating unit (300) is provided with a first coil (310) and a second coil (320) spaced apart along the axial direction, and the first and second coils (310, 320) are spaced apart along the return direction at a spacing equal to the spacing between the first jigs (110) in the return direction, so that the stabilizer bar (1) mounting portions of each of the first and second jigs (110, 210) are arranged so as to face the first and second coils (310, 320).

A bush (10) provided on a stabilizer bar (1) is placed between the first and second coils (310, 320) which are arranged opposite to each other along the axial direction, and when power is applied to the first and second coils (310, 320), induction heating of the adhesive surface of the bush (10) of the stabilizer bar (1) occurs.

The adhesive activation process by induction heating of the adhesive surface of the bush (10) of the stabilizer bar (1) is performed in a state where the bush (10) adhered to the surface of the stabilizer bar (1) is assembled inside the bracket (11), so the axial separation between the first and second coils (310, 320) arranged oppositely is formed to be larger than the axial width of the bracket (11).

Since the stabilizer bar (1) has a shape in which both axial ends are symmetrical to each other based on the axial center, in order to increase the stability of the stabilizer bar (1) mounted on the first jig (110) in the adhesive activation process by induction heating of the bonding surface of the bush (10) of the stabilizer bar (1), the support unit (100) is formed as a pair that is positioned oppositely along the axial direction of the stabilizer bar (1), and a pair of first jigs (110) that are positioned oppositely along the axial direction support one stabilizer bar (1) at two points.

At this time, since stabilizer bars (1) of different specifications are applied to each vehicle model and the spacing between brackets (11) fixed to the vehicle body may vary, the spacing between the support units (100) facing each other along the axial direction is formed to be smaller than the spacing between the pair of bushes (10) provided on the surface of the stabilizer bar (1) so that an adhesive activation process can be performed by induction heating of the adhesive surface of the bushes (10) of stabilizer bars (1) of various specifications.

In addition, in order to increase the return stability of the stabilizer bar (1) mounted on the second jig (210) during the return direction transport process of the stabilizer bar (1) through the return unit (200), the return unit (200) is formed as a pair that are positioned oppositely along the axial direction of the stabilizer bar (1).

In particular, since the return unit (200) returns a stabilizer bar (1) mounted on a specific first jig (110) to another first jig (110) arranged adjacently through a return operation according to a vertical movement, a return direction movement, and a return direction reverse movement, it is preferable that the spacing between the return units (200) be formed to be smaller than the spacing between the induction heating units (300) in order to prevent interference between the support unit (100) and the return unit (200) during the return process of the stabilizer bar (1).

And since the stabilizer bar (1) is provided with a pair of bushes (10) and brackets (11) arranged oppositely along the axial direction, the induction heating unit (300) is formed as a pair of bushes (10) spaced apart from each other along the axial direction of the stabilizer bar (1), and since the spacing between the brackets (11) can vary depending on the specifications of the stabilizer bar (1), the axial position of each induction heating unit (300) can be adjusted to match the axial position of the bracket (11).

In addition, the induction heating unit (300) can move linearly back and forth in the direction of approaching or retracting the support unit (100), so that the return process of the stabilizer bar (1) and the induction heating process of the bush (10) bonding surface of the stabilizer bar (1) can be performed continuously.

When the induction heating unit (300) approaches the support unit (100), the bush (10) bonding surface and bracket (11) of the stabilizer bar (1) mounted on the first jig (110) are placed between the first and second coils (310, 320), so that induction heating is performed through the first and second coils (310, 320), and when the stabilizer bar (1) is returned, the induction heating unit (300) is retracted from the support unit (100) to separate the stabilizer bar (1) from the first and second coils (310, 320), thereby preventing interference between the first and second coils (310, 320) and the stabilizer bar (1).

And the first coil (310) and the second coil (320) are formed to partially surround the outer surface of the stabilizer bar (1) so as to be spaced apart from the outer surface of the stabilizer bar (1) in the radial direction of the stabilizer bar (1), and the openings of the first and second coils (310, 320) formed by not surrounding the outer surface of the stabilizer bar (1) are formed toward the arrangement direction of the first and second jigs (110, 210).

The openings of the first and second coils (310, 320) form an entrance through which the stabilizer bar (1) passes when the induction heating unit (300) approaches the support unit (100) for induction heating of the bonding surface of the bush (10) of the stabilizer bar (1), or when the induction heating unit (300) is withdrawn from the support unit (100) for returning the stabilizer bar (1).

The induction heating unit (300) may be composed of a temperature-raising unit (301) that is arranged at the start of the return of the stabilizer bar (1) and rapidly raises the temperature of the bush (10) bonding surface of the stabilizer bar (1), and a heat-keeping unit (302) that maintains the temperature of the bush (10) bonding surface rapidly raised by the temperature-raising unit (301) at a temperature higher than the target temperature. The temperature-raising unit (301) and the heat-keeping unit (302) may each be composed of one or more bundles of first and second coils (310, 320) that are arranged adjacently along the return direction.

In addition, in order to enable the return to the original position operation according to the vertical movement of the return unit (200), the movement in the return direction, and the movement in the reverse direction of the return direction, a return frame (201) that supports the return unit (200) is arranged at the bottom of the return unit (200), and is slidably connected to a slider (221) provided at the top of the return frame (201) through a slide rail (220) formed at the bottom of the return unit (200), so that the return unit (200) is connected so as to be able to slide along the return direction or the reverse direction of the return direction.

The return frame (201) is equipped with a first actuator (230) that provides power for movement of the return unit (200) in the return direction or in the reverse direction of the return direction, and movement of the return unit (200) in the return direction or in the reverse direction of the return direction is achieved by operation of the first actuator (230).

And the return frame (201) is equipped with a second actuator (240), and the second actuator (240) provides power to simultaneously move the return unit (200), the return frame (201), and the first actuator (230) upward or downward, thereby enabling the return unit (200) to move upward or downward.

Accordingly, when performing induction heating of the bush (10) bonding surface of the stabilizer bar (1), the second actuator (240) is operated while the stabilizer bar (1) is secured to the first jig (110) to move the return unit (200) downward, and the stabilizer bar (1) support surface of the second jig (210) is positioned lower than the stabilizer bar (1) support surface of the first jig (110), so that the stabilizer bar (1) is secured on the first jig (110).

When the induction heating of the bush (10) bonding surface of the stabilizer bar (1) is completed and the induction heating unit (300) is withdrawn from the support unit (100), the stabilizer bar (1) is returned by the operation of the return unit (200), and the second actuator (240) is operated in the reverse direction to move the return unit (200) upward, and the stabilizer bar (1) is placed on the second jig (210) while the stabilizer bar (1) support surface of the second jig (210) is positioned higher than the stabilizer bar (1) support surface of the first jig (110).

The first actuator (230) operates to move the return unit (200) along the return direction by a distance corresponding to the return direction separation interval of the first and second jigs (110, 210), and the second actuator (240) operates to move the return unit (200) downward, so that the support surface of the stabilizer bar (1) of the second jig (210) is positioned lower than the support surface of the stabilizer bar (1) of the first jig (110), so that the stabilizer bar (1) that was placed on a specific first jig (110) is placed on another neighboring first jig (110) along the return direction.

The first actuator (230) operates in the reverse direction to move the return unit (200) in the reverse direction of the return direction by a distance corresponding to the return direction separation interval of the first and second jigs (110, 210), thereby returning the return unit (200) to the desired position and returning the stabilizer bar (1).

By configuring the return unit (200) to be able to reciprocate in the up-and-down direction and in the return direction and the reverse return direction through the first and second actuators (230, 240), the precision of the return direction transfer interval can be improved compared to when the return unit (200) is configured as a conveyor belt, and during the return process of the stabilizer bar (1), the stabilizer bar (1) can be prevented from being detached from the first jig (110) or the second jig (210) and the occurrence of a process delay due to this can be prevented.

At this time, the stabilizer bar (1) mounting portion of the first and second jigs (110, 210) can be formed so that the central height of the mounting portion is lower than the mounting portion heights of the start and end ends of the return portion, and the mounting portion can be formed as a concave groove with a V-shaped cross-section.

It is preferable that the width of the V-shaped cross-section ends of the fixing portions of the first and second jigs (110, 210) in the return direction be formed larger than the diameter of the stabilizer bar (1). Thus, even if the position where the stabilizer bar (1) is fixed is formed at a position spaced apart from the center position of the fixing portion in the return direction of the first jig (110) or the second jig (210) in the forward and backward direction, the stabilizer bar (1) is moved toward the center position of the fixing portion in the return direction through the V-shaped inclined plane formed by the fixing portion.

By doing this, the first and second coils (310, 320) are prevented from interfering with the stabilizer bar (1) or bracket (11), thereby preventing breakage of the first and second coils (310, 320) or damage to the paint surface of the stabilizer bar (1) or bracket (11).

In addition, when the stabilizer bar (1) is mounted on the first jig (110), if the axial center of the stabilizer bar (1) is mounted in an eccentric position toward one of the first jigs (110) facing each other along the axial direction, the bracket (11) may interfere with the first coil (310) or the second coil (320) during the process of the induction heating unit (300) approaching the support unit (100), resulting in damage to the first and second coils (310, 320) or damage to the paint surface of the stabilizer bar (1) or the bracket (11).

Accordingly, a pair of centering units (400) that align the axial center positions of the stabilizer bar (1) of the support unit (100) can be arranged at the start of the return of the stabilizer bar (1), and each centering unit (400) is arranged to face each other on the axial outer side of the support units (100) on both sides that are arranged oppositely along the axial direction.

When the stabilizer bar (1) is placed on the first jig (110) arranged at the end of the return start section, the centering units (400) on both sides arranged oppositely along the axial direction approach the stabilizer bar (1), and the centering units (400) on both sides temporarily press toward the center of the stabilizer bar (1) while each contacting the two ends of the stabilizer bar (1), thereby aligning the axial positions of the bush (10) and the bracket (11).

In order to prevent the axial positions of the bush (10) and the bracket (11) from becoming eccentric during the process of returning the stabilizer bar (1) by operating the return unit (200), a pair of guide units (500) may be arranged to be parallel to each other along the axial outer sides of the support units (100) on both sides, excluding the return start portion where the centering unit (400) is arranged.

The guide unit (500) may be formed of a panel member having an 'L'-shaped cross-section in which a vertical panel aligning the axial positions of both ends of the stabilizer bar (1) and a horizontal panel aligning the vertical positions of both ends of the stabilizer bar (1) are combined.

The stabilizer bar (1) has a banding processing section formed in a plurality of directions except for the axial central portion, so that the central axes of both ends of the stabilizer bar (1) are spaced apart from the central axis of the axial central portion of the stabilizer bar (1) by a predetermined distance, so that during the process of returning the stabilizer bar (1) through the return unit (200), a pendulum motion can occur in which the both ends reciprocate back and forth in the return direction.

The horizontal panel of the guide unit (500) supports the lower part of both ends of the stabilizer bar (1), thereby preventing the occurrence of pendulum movement of the stabilizer bar (1) mounted on the first jig (110) or the second jig (210), thereby enabling the return and induction heating process of the stabilizer bar (1) to be performed more stably.

Each guide unit (500) can be configured to allow for adjustment of the axial arrangement interval and the vertical position, and by adjusting the axial arrangement interval and the vertical position of the guide unit (500), axial position alignment is possible corresponding to stabilizer bars (1) of various specifications.

A skid unit (600) can be placed at the end of the return completion section of the stabilizer bar (1) of the support unit (100), and after induction heating of the adhesive surface of the bush (10) of the stabilizer bar (1) mounted on the first jig (110) placed at the end of the return completion section is completed, when the stabilizer bar (1) is taken out from the support unit (100) through the return unit (200), the stabilizer bar (1) taken out through the skid unit (600) is collected.

In order to stably collect the exported stabilizer bar (1), the skid unit (600) is provided with an inclined surface (610) whose upper surface height decreases as it gets farther away from the support unit (100), and a stopper (620) that protrudes upward is provided at the end of the inclined surface (610) on the opposite side to the direction of arrangement of the support unit (100), so that the exported stabilizer bar (1) moves along the inclined surface (610) and is then stopped by the stopper (620).

In order to protect the surface of the stabilizer bar (1) during the export process, the inclined surface (610) may be made of a material with a low coefficient of friction, and the surface of the stopper (620) may be made of a material capable of absorbing shock, such as rubber.

In addition, in order to prevent the return operation of the return unit (200) from being performed while the stabilizer bar (1) is not secured on the first jig (110) or the induction heating unit (300) from approaching the support unit (100), a sensor (111) for detecting whether the stabilizer bar (1) is secured may be provided on the first jig (110).

The sensor (111) may be provided only on the first jig (110) positioned at the end of the return start section, or may be provided on a plurality of first jigs (110) including the first jig (110) positioned at the end of the return start section.

And, due to the structural and material characteristics of the bracket (11) made of metal material, which surrounds the stabilizer bar (1) and bush (10) and secures the stabilizer bar (1) to the vehicle body, the axial and radial widths of the bracket (11) are formed to be larger than the axial and radial widths of the bush (10) bonding surface of the stabilizer bar (1).

Since the bracket (11) is positioned relatively closer to the first and second coils (310, 320) than the bonding surface of the bush (10) of the stabilizer bar (1), induction heating occurs only in the bracket (11), and induction heating may not occur on the bonding surface of the bush (10) of the stabilizer bar (1).

Accordingly, one or more shielding materials (330) may be provided on the surfaces of the first and second coils (310, 320) to partially shield the electromagnetic field formed by the first and second coils (310, 320) and control the direction of electromagnetic field emission. The shielding materials (330) prevent the electromagnetic field from being emitted toward the bracket (11) and thus prevent induction heating of the bracket (11).

The shielding material (330) may be made of an iron oxide ferrite material having electrical insulation performance, and is not limited to a material that can control the direction of electromagnetic field emission by shielding the electromagnetic field formed by the first and second coils (310, 320).

In addition, a stabilizer bar (1) of a specific specification may be formed so that the bending processing portion is close to the axial outer side of the bush (10) and the bracket (11), and when the stabilizer bar (1) is secured to the first jig (110), if the direction in which the bending processing portion faces does not match the opening of the first coil (310) or the second coil (320), interference may occur between the bending processing portion and the first and second coils (310, 320).

Since damage to the paint surface of the stabilizer bar (1) may occur when there is interference between the banding processing section and the first and second coils (310, 320), an angle adjustment unit (not shown) may be placed on the axial outer side of the support unit (100) to match the direction in which the banding processing section of the stabilizer bar (1) faces with the direction in which the openings of the first and second coils (310, 320) are formed.

The bonded bush stabilizer bar induction heating method using the induction heating device for the bonded bush stabilizer bar of the automobile suspension device according to the present invention including the above-mentioned configuration is explained as follows.

In the stabilizer bar settling step (S10), the stabilizer bar (1) is settling on the first jig (110) located at the end of the return start section of the support unit (100), and when the stabilizer bar (1) settling is completed, the centering unit (400) is operated to temporarily pressurize both ends of the stabilizer bar (1) settling on the first jig (110) to align the axial positions of the bush (10) and the bracket (11).

When the stabilizer bar (1) is installed, a sensor (111) provided in the first jig (110) detects whether the stabilizer bar (1) is installed, and only when the sensor (111) detects the installation status of the stabilizer bar (1) on the first jig (110), the stabilizer bar return step (S20) is performed.

In the stabilizer bar return step (S20), the stabilizer bar (1) mounted on the first jig (110) located at the end of the return start section is returned to another first jig (110) positioned adjacently in the return direction through the return unit (200) and is then mounted.

The first jigs (110) provided in the support unit (100) and the second jigs (200) provided in the return unit (200) are arranged to have equal intervals from each other along the return direction, so that when return is performed through the return unit (200), the stabilizer bars (1) installed on each first jig (110) are simultaneously returned to the first jig (110) arranged adjacently along the return direction, and the stabilizer bar (1) installed on the first jig (110) located at the end of the return completion section is removed from the support unit (100).

When the stabilizer bar return step (S20) is completed, the coil placement step (S30) is performed, and in the coil placement step (S30), the induction heating unit (300) approaches the support unit (100) and the bushes (10) and brackets (11) of the stabilizer bars (1) secured to the first jig (110) are placed between the first and second coils (310, 320).

In the induction heating step (S40), current is applied to the first and second coils (310, 320) to inductively heat the bonding surface of the bush (10) of the stabilizer bar (1), and when induction heating is completed at the set bonding surface heating temperature and heating time, the induction heating unit (300) is retracted from the support unit (100), and a coil separation step (S50) is performed to separate the first and second coils (310, 320) from the bush (10) and the bracket (11).

In the adhesive activation step (S60), the stabilizer bar mounting step (S10) to the coil separation step (S50) are repeatedly performed until the stabilizer bar (1) mounted on the first jig (110) located at the end of the return start section is returned to the first jig (110) located at the end of the return completion section.

In the induction heating step (S40), a process of inductively heating and heating the adhesive surface of the bush (10) of the stabilizer bar (1) placed on the first jig (110) placed at the return start section through a temperature-raising unit (301), and a process of inductively heating and keeping the adhesive surface of the bush (10) of the stabilizer bar (1) returned toward the return completion section after temperature-raising, through a heat-keeping unit (302), are carried out simultaneously.

When the adhesive activation step (S60) is performed to complete the induction heating of the adhesive surface of the bush (10) of the stabilizer bar (1) mounted on the first jig (110) located at the end of the return completion section, the unloading step (S70) is performed, and in the unloading step (S70), the stabilizer bar (1) mounted on the first jig (110) located at the end of the return completion section of the return unit (200) is unloaded from the support unit (100), thereby completing the adhesive activation of the bonded bush stabilizer bar using the induction heating device for the bonded bush stabilizer bar of the automobile suspension device.

Although the embodiments of the present invention have been described with reference to the above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential features thereof.

Therefore, it should be understood that the embodiments described above are illustrative and not restrictive in all respects, and the scope of the present invention described in the above detailed description is indicated by the claims described below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

1: Stabilizer bar 10: Bush
11: Bracket 100: Support Unit
110: Jig 1 111: Sensor
200: Return unit 201: Return frame
210: 2nd jig 220: Slide rail
221: Slider 230: First actuator
240: Second actuator 300: Induction heating unit
301: Heating unit 302: Insulating unit
310: 1st coil 320: 2nd coil
330: Shielding material 400: Centering unit
500: Guide unit 600: Skid unit
610: Slope 620: Stopper

Claims (15)

A support unit (100) equipped with a plurality of first jigs (110) spaced apart at regular intervals along a return direction perpendicular to the axial direction of the stabilizer bar (1);
A plurality of second jigs (210) are provided, spaced apart at the same interval as the spacing between the first jigs (110) along the return direction perpendicular to the axial direction of the stabilizer bar (1), and are arranged opposite to the axial side of the stabilizer bar (1) of the support unit (100), and a return unit (200) that returns the stabilizer bar (1) secured to the first jig (110) to the first jig (110) arranged adjacent to the return direction; and
An induction heating unit (300) which is provided with a plurality of first and second coils (310, 320) arranged so as to face the stabilizer bar (1) mounting portions of the first and second jigs (110, 210) and spaced apart at intervals equal to the spacing between the first jigs (110) along a return direction which is perpendicular to the axial direction of the stabilizer bar (1), and which is capable of linearly reciprocating in a direction approaching or retreating from the support unit (100), so that when approaching the support unit (100), the bush (10) provided on the stabilizer bar (1) mounted on the first jig (110) is placed between the first and second coils (310, 320) to inductively heat the bonding surface of the bush (10) of the stabilizer bar (1);
Consisting of including,
The above induction heating unit (300) is composed of a temperature raising unit (301) that is arranged at the start of the return of the stabilizer bar (1) and raises the temperature of the bonding surface of the bush (10) of the stabilizer bar (1), and a heat retention unit (302) that maintains the temperature of the bonding surface of the bush (10) that has been raised by the temperature raising unit (301).
An induction heating device for a bonded bush stabilizer bar for an automobile suspension device, characterized in that a pair of centering units (400) are arranged oppositely along the axial direction of the stabilizer bar (1) at the axial outer side of the stabilizer bar (1) of the stabilizer bar (1) return start portion of the support units (100) to temporarily press both ends of the stabilizer bar (1) secured to the first jig (110) toward the center of the stabilizer bar (1) to align the axial position of the stabilizer bar (1) of the bush (10). In the first paragraph,
The above first and second coils (310, 320) are respectively arranged to face each other and spaced apart from each other in the axial direction of the stabilizer bar (1) centered on the bush (10) provided on the surface of the stabilizer bar (1), and are arranged to partially surround the outer surface of the stabilizer bar (1) except for the arrangement direction of the first and second jigs (110, 210) so as to be spaced apart from the outer surface of the stabilizer bar (1) in the radial direction of the stabilizer bar (1), and an opening is formed through which the stabilizer bar (1) secured to the first jig (110) can enter and exit. An induction heating device for a bonded bush stabilizer bar of an automobile suspension device. delete In the first paragraph,
An induction heating device for a bonded bush stabilizer bar of an automobile suspension device, characterized in that the above induction heating unit (300) can be positionally adjusted along the axial direction of the stabilizer bar (1). delete In the first paragraph,
An induction heating device for a bonded bush stabilizer bar of an automobile suspension device, characterized in that a pair of guide units (500) are arranged in a manner parallel to the support units (100) on the axial outer side of the stabilizer bar (1), each of which supports both axial ends of the stabilizer bar (1), and the guide units (500) can be positionally adjusted according to the axial arrangement interval of the stabilizer bar (1) and the up-down direction. In the first paragraph,
An induction heating device for a bonded bush stabilizer bar of an automobile suspension, characterized in that a skid unit (600) is arranged at the end of the stabilizer bar (1) return completion portion of the support unit (100), from which the stabilizer bar (1) on which the induction heating of the bonding surface of the bush (10) has been completed is carried out, wherein the skid unit (600) is provided with an inclined surface (610) whose upper surface height decreases as it moves away from the support unit (100), and a stopper (620) is provided at the end of the inclined surface (610) on the opposite side to the direction in which the support unit (100) is arranged, for stopping the stabilizer bar (1) that has moved along the inclined surface (610). In the first paragraph,
An induction heating device for a bonded bush stabilizer bar of an automobile suspension device, characterized in that at least one of the first jigs (110) disposed at the start of the return of the stabilizer bar (1) of the support unit (100) is provided with a sensor (111) for detecting whether the stabilizer bar (1) is secured. In the first paragraph,
The above first and second jigs (110, 210) are characterized by being formed of a V-shaped concave groove whose central height is lower than the heights of the start and end ends of the return of the stabilizer bar (1). An induction heating device for a bonded bush stabilizer bar of an automobile suspension device. In the first paragraph,
The above return unit (200) is slidably connected to the upper part of the return frame (201) through a slide rail (220) formed at the bottom, and is connected to a first actuator (230) provided in the return frame (201) so that when the first actuator (230) is operated, the stabilizer bar (1) can reciprocate in the return direction and the opposite direction of the return direction, and when the second actuator (240) provided in the return frame (201) is operated, the stabilizer bar can reciprocate up and down together with the return frame (201), which is an induction heating device for an automobile suspension device bonded bush stabilizer bar. In the first paragraph,
An induction heating device for a bonded bush stabilizer bar of an automobile suspension device, characterized in that the surfaces of the first and second coils (310, 320) are provided with at least one shielding material (330) that partially shields the electromagnetic field formed by the first coil (310) and the second coil (320) and adjusts the direction of electromagnetic field emission. A stabilizer bar mounting step (S10) of mounting the stabilizer bar (1) onto a first jig (110) located at the end of the return start portion of the stabilizer bar (1) of a support unit (100) equipped with a plurality of first jigs (110) spaced apart at regular intervals along a return direction perpendicular to the axial direction of the stabilizer bar (1);
A stabilizer bar return step (S20) of returning the stabilizer bar (1) mounted on the first jig (110) to the first jig (110) arranged adjacent to the return direction side through a return unit (200) arranged opposite to the axial side of the stabilizer bar (1) of the support unit (100), wherein a plurality of second jigs (210) are arranged at intervals equal to the intervals between the first jigs (110) along the return direction that is perpendicular to the axial direction of the stabilizer bar (1);
A coil arrangement step (S30) of approaching an induction heating unit (300) equipped with a plurality of first and second coils (310, 320) arranged so as to face the stabilizer bar (1) mounting portions of the first and second jigs (110, 210) and arranged at intervals equal to the interval between the first jigs (110) along a return direction perpendicular to the axial direction of the stabilizer bar (1), and arranging a bush (10) equipped on the stabilizer bar (1) mounted on the first jig (110) between the first and second coils (310, 320);
An induction heating step (S40) of inductively heating the bonding surface of the bush (10) of the stabilizer bar (1) through the first and second coils (310, 320);
A coil separation step (S50) for separating the first and second coils (310, 320) from the bush (10) by retracting the induction heating unit (300) from the support unit (100);
An adhesive activation step (S60) in which the stabilizer bar (1) secured on the first jig (110) is repeatedly performed through the stabilizer bar securing step (S10) to the coil separating step (S50) until the stabilizer bar (1) secured on the first jig (110) is returned to the first jig (110) located at the end of the stabilizer bar (1) return completion section; and
A stabilizer bar removal step (S70) of removing the stabilizer bar (1) returned to the first jig (110) located at the end of the stabilizer bar (1) return completion section from the support unit (100);
Including, but not limited to,
On the axial outer side of the stabilizer bar (1) of the return start portion of the above support unit (100), a pair of centering units (400) are provided so as to be arranged oppositely along the axial direction of the stabilizer bar (1) to temporarily press both ends of the stabilizer bar (1) secured to the first jig (110) toward the center of the stabilizer bar (1) to align the axial position of the stabilizer bar (1) of the bush (10).
A bonded bush stabilizer bar induction heating method using an induction heating device for an automobile suspension device bonded bush stabilizer bar, characterized in that the position of the bush (10) is aligned by the centering unit (400) when the stabilizer bar (1) is secured to the first jig (110) in the stabilizer bar securing step (S10). In Article 12,
The above induction heating unit (300) is composed of a temperature raising unit (301) that is arranged at the start of the return of the stabilizer bar (1) and raises the temperature of the bonding surface of the bush (10) of the stabilizer bar (1), and a heat retention unit (302) that maintains the temperature of the bonding surface of the bush (10) that has been raised by the temperature raising unit (301).
A bonded bush stabilizer bar induction heating method using an induction heating device for an automobile suspension device bonded bush stabilizer bar, characterized in that the bonded bush stabilizer bar (10) bonding surface temperature is increased through the heating unit (301) in the induction heating step (S40), and the bonded bush stabilizer bar (10) bonding surface temperature is maintained through the heating unit (302). In Article 12,
At least one of the first jigs (110) including the first jig (110) arranged at the end of the return start portion of the stabilizer bar (1) of the support unit (100) is provided with a sensor (111) for detecting whether the stabilizer bar (1) is settled.
A bonded bush stabilizer bar induction heating method using an induction heating device for a bonded bush stabilizer bar of an automobile suspension device, characterized in that the above stabilizer bar return step (S20) is performed only when the fixation state of the stabilizer bar (1) to the first jig (110) is detected through the sensor (111). delete