KR100342771B1 - Apparatus for heat treatment of impact beams for use in automobiles - Google Patents

Abstract

The present invention relates to an impact beam heat treatment apparatus for automobiles, and more particularly, to an impact beam heat treatment apparatus for automobiles configured to enable uniform and continuous heat treatment for an impact beam having an elliptical cross section as well as an impact beam having a circular cross section.

The present invention is a step feeder (10) for continuously feeding the impact beam of a predetermined standard to the conveying device 20 sequentially and the impact beam supplied from the step feeder (10) chain transfer means ( 21 and 22, the impact beam conveying apparatus 20 for horizontally conveying to one side by a constant speed, and the impact beams conveyed by the conveying apparatus 20 transfer rollers 31 and the guide 32 Guide part 30 for guiding and progressing the impact beams so as not to cause interference and friction between the impact beams and not leaving the predetermined position by rotating the impact beams that have passed through the guide part 30. And an impact beam rotating progress portion 40 for advancing and rotating between the support devices 42 positioned above the rotating drum 41 and the impact beams rotated by the rotating progress portion 40. 51) Pass through the center And a heat treatment unit 50 which performs heat treatment by induction heating while the support device 42 of the impact beam rotation progressing unit 40 is provided with tapered support rolls 43 to support this roll ( 43) provides an impact beam heat treatment apparatus for an automobile, characterized in that configured to press and support the upper portion of the impact beam.

Description

Impact Beam Heat Treatment System for Automobiles {APPARATUS FOR HEAT TREATMENT OF IMPACT BEAMS FOR USE IN AUTOMOBILES}

The present invention relates to an impact beam heat treatment apparatus for automobiles, and more particularly, to an impact beam heat treatment apparatus for automobiles configured to enable uniform and continuous heat treatment for an impact beam having an elliptical cross section as well as an impact beam having a circular cross section.

Impact beam (IMPACT BEAM) related to the present invention is mainly provided on the inside of the door of the car, such as a passenger car or a van, to reduce the deformation of the vehicle due to the impact force in the event of a car crash to a minimum, thereby reducing the occupant or driver of the vehicle Minimize human injury.

These impact beams for automobiles are heat-treated and other necessary materials in circular cross-section metal (usually steel) hollow tubes in order to meet the requirements to exhibit structurally good impact resistance and shock absorption without incurring weight gain of the vehicle. It is common to apply additional processing to manufacture and use it. Recently, the production and use of impact beams having a more favorable cross-sectional shape, such as an elliptical cross-section, has been proposed in terms of showing the stiffness and impact resistance at the moment of collision. It is.

In order to enable mass continuous and economical production of such impact beams, a method of performing continuous heat treatment by induction heating while continuously transferring impact beams of a predetermined size to one side using a transfer means such as a chain transfer mechanism is used. Induction heating of the impact beam is performed by passing the impact beam to be processed at a constant speed to the center of the induction coil arranged in a circular shape.

As a device for performing the heat treatment of the impact beam as described above, the conventional device is to pass through the center of the circular guide coil while simply moving the impact beam to be processed horizontally to one side. In the case of the impact beam, a uniform heat treatment can be obtained by simply passing the beam through the center of the circular induction coil. However, in the case of the impact beam having a non-circular cross section such as an ellipse, the beam is passed through the center of the circular induction coil. Even though the distance between the beam and the guide coil varies with each part of the circumferential direction of the beam, it becomes difficult to heat-treat the beam uniformly. Therefore, the impact beam having a defect such as a decrease in strength or a warpage deformation is difficult. Will be made.

Therefore, the present invention effectively solves the above-mentioned problems as described above, and the impact beam for automobiles which enables uniform and smooth heat treatment to the impact beam of the circular cross-sectional shape as well as the non-circular cross-sectional shape of the elliptical shape. The invention has been developed for the purpose of providing a heat treatment apparatus.

1 is a general configuration overview of an impact beam heat treatment apparatus for an automobile according to the present invention;

Figure 2 is an excerpt front view showing the impact beam progress state when using the support roll of the ball form,

Figure 3 is an excerpt front view showing the impact beam progress when using the tapered support roll,

4 is a front view showing an impact beam heat treatment state using the apparatus of the present invention.

Explanation of symbols on the main parts of the drawings

1: Impact Beam 10: Step Feeder

20: transfer device 21, 22: chain transfer means

30: guide part 31: feed roller

32: guide 40: rotation progress unit

41: rotating drum 42: support device

43: support roll 44, 45: frame

46: air cylinder 46a: working arm

47: pneumatic gauge 50: heat treatment

51: induction coil 60: cooling unit

70: feed roller

The present invention for achieving the above object is a step feeder for stacking the impact beams to be processed sequentially and sequentially supplying the impact beam to the transfer device, the impact beam transfer device for horizontally feeding the impact beam supplied from the step feeder to a side at a constant speed And a guide portion for guiding the impact beams carried by the transfer device so that interference and friction between the beams do not occur and not leaving a predetermined position, and an impact beam rotation for rotating the impact beams passing through the guide portion. And a heat treatment portion for performing heat treatment by induction heating while passing the impact beam rotated by the rotation progress portion to the center of the induction coil, and the impact beam rotation progress portion includes support rolls on the taper. Configured to support the tops of the impact beams with these support rolls Provided is an impact beam heat treatment apparatus for an automobile, characterized in that.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1 shows the overall configuration of the impact beam heat treatment apparatus for automobiles according to the present invention.

As shown here, the present invention stacks the impact beams 1 of a predetermined standard and sequentially feeds them sequentially to the feeder 20. From the step feeder 10, The impact beam conveying apparatus 20 which supports the supplied impact beam 1 by the chain conveying means 21 and 22, and horizontally conveys it to one side by a constant speed, and the impact conveyed by the conveying apparatus 20 Guide portion 30 for guiding the beams by the feed rollers 31 and the guide 32 so that interference and friction between the impact beams 1 do not occur and the impact beams 1 do not deviate from a predetermined position. And the impact beam rotation progress portion 40 for rotating the impact beams 1 passing through the guide portion 30 by the rotating drum 41 and the supporting device 42 positioned on the rotating drum 41. ) And the impact beam rotated by the rotation progress portion 40 ( 1) comprising a heat treatment unit 50 for performing heat treatment by induction heating while passing through the center of the circular induction coil 51, the support device 42 of the rotation progressing portion 40 is a tapered support roll It is provided with an impact beam heat treatment apparatus for an automobile, characterized in that it is configured to support the upper portion of the impact beam (1) with the supporting rolls (43).

In the apparatus, a rear side of the heat treatment unit 50 is provided with a normal cooling unit 60 and a transfer roller 70 for transferring the processing impact beams 1 to the final place.

In the impact beam rotation progression portion 40 of the device, the support device 42 comprises air cylinders 46 installed between the frames 44 and 45, and an operation arm 46a of each of the air cylinders 46. The impact beam 1 is configured to include a tapered support rolls 43 which are supported at the lower part of the frame 45 so that the vertical movement thereof is possible, and the support rolls 43 are rotated on the rotating drum 41. It is configured to support the upper part of the field by pressing the proper pressure. Each of the supporting rolls 43 is formed in a tapered shape in which the tip portion of the impact beam 1 is advanced to have a small diameter, and gradually increases in diameter from the tip portion to the rear end portion. Adjusting the pressure of the air supplied to the air cylinder 46 on the upper portion of each of the air cylinder 46, the support rolls 43 to support the upper portion of the impact beam (1) by pressing the pressure of the required size Pneumatic gauges 47 are provided to enable this.

In operation, the impact beams 1, which are sequentially supplied one by one from the step feeder 10, are conveying apparatus 20 and conveying rollers 31 and guides 32 having chain conveying means 21 and 22. When the impact beam (1) is horizontally conveyed toward the rotation progression portion 40 by the guide portion 30 provided with (), enters the rotation progression portion 40, the impact beam (1) ) Is lowered on the pair of rotary drums 41 installed in parallel to the left and right while the upper portion is rotated in one direction by the rotational force of the rotary drum 41 while being pressed and supported by the support rolls 43. While proceeding to the heat treatment unit 50. As described above, the impact beams 1 rotated through the rotation progressing part 40 enter and pass through the center of the circular induction coil 51 of the subsequent heat treatment part 50, and thus are induced by the induction heating action by the induction coil 51. After the heat treatment, the impact beams 1 heat-treated in this manner are cooled by the cooling unit 60 and finally transported to a predetermined place by the transfer rollers 70.

Here, when the impact beams 1 are hollow tubes having a non-circular cross-sectional shape, such as an ellipse, the impact beams entering the rotation progressing part 40 through the conveying device 20 and the guide part 30 ( 1), for example, as shown in Figs. 2 and 3, the preceding impact beam 1a and the subsequent impact beam 1b in contact with the rear end of the impact beam 1a are rotated in different cross-sectional directions. There is a case that enters the portion 40, in which case the support roll for pressing the upper portion of the impact beam (1a) (1b) toward the rotating drum 41 is supported as a spherical support roll 43 as in the example of FIG. ') Or a simple cylindrical support roll, the leading impact beam 1a passes through the lower portion of the support roll 43', and the trailing impact beam 1b has its front end at the support roll 43. Impact beams can be contacted with a large angle on the side of ') or caught on the side of the support roll. Or disconnection is being made is difficult to smoothly.

In view of this point, the present invention is to configure the support roll of the above object as a tapered support roll 43 as described above, in the case of employing the tapered support roll 43 as illustrated in FIG. As described above, even when the non-circular cross-sectional impact beams 1a and 1b are placed in different cross-sectional directions and enter the rotation progressing portion 40, the linear and subsequent impact beams 1a and 1b are supported by the support roll ( 43 is smoothly connected to the tapered lower surface of the support roll 43 without being caught by the side portion or contacted at a large angle, so that the progress of the impact beams is extremely smooth in any case.

Since the impact beams 1 rotate in the same manner as above, they pass through the center of the induction coil 51 of the heat treatment unit 50, so that the impact beams 1 have an elliptical cross-sectional shape. 1) are rotated at the center of the circular induction coil 51, so that all the parts of the impact beam 1 can be heat treated evenly, and therefore, such as deformation or strength reduction of the impact beam due to non-uniform heat treatment as in the prior art. The occurrence of defects is minimized.

The present invention enables uniform and continuous heat treatment for impact beams having a circular cross-sectional shape as well as impact beams having a non-circular cross-sectional shape, such as elliptical shape, by the above-described configuration and operation. And to provide an effect that can greatly improve the productivity.

Claims (1)

A step feeder 10 for sequentially stacking the impact beams to be processed and sequentially supplying the impact beams to the transfer apparatus 20, and an impact beam transfer device for horizontally feeding the impact beam supplied from the step feeder 10 at a constant speed ( 20) and the guide portion 30, and the impact beam rotation progress portion 40 for rotating the impact beams passing through the guide portion 30 between the rotating drum 41 and the support rolls 43, And a heat treatment unit 50 which performs heat treatment by induction heating while passing through the impact beam rotated by the rotation progress unit 40 to the center of the induction coil 51, and the rotation progress unit 40. Impact roll heat treatment apparatus for a vehicle, characterized in that the support rolls 43 are made of tapered support rolls.