KR101741016B1 - Automotive wet and dry type vacuum roller applied sheet processing system - Google Patents

Abstract

The present invention relates to a steel sheet processing system for a vehicle. The steel sheet processing system is capable of reducing friction with an upper metal mold by spraying lubricating oil onto a surface of a steel sheet before press processing to prevent breakage of the steel sheet. Moreover, the steel sheet processing system is able to replace an existing oil refiner which is relatively expensive by adopting an oil skimmer and a new treated oil drum equipped with a filter, and the steel sheet processing system maximizes processing efficiency by filtering impurities twice in contaminated treated oil.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wet-type and dry-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automotive steel sheet processing wet type and dry type vacuum roller system, and more particularly, It is possible to replace the existing oil refiner which is relatively expensive by adopting the new oil refining drum equipped with the oil skimmer and the filter, and it is possible to replace the impurities To a steel sheet processing wet and dry vacuum roller system for automobiles capable of maximizing the processing efficiency by filtering through the first and second stages.

Plate-like steel plates are used to make various products by making various shapes through pressing. For example, various panels used in vehicles are made by pressing a plate-like steel plate. In the press working, since the mold is adhered to the surface of the steel sheet to form the panel in a desired shape, if there is foreign matter on the surface of the steel sheet, the panel can not be formed in a desired shape and appearance defect occurs.

In order to solve such a problem, a plate-like steel plate is washed through a foreign matter removing device before press working. An example of such a foreign substance removing apparatus is shown in the following prior art documents.

Korean Patent Laid-Open Publication No. 10-2008-0055268 discloses a foreign matter removing apparatus having a conveying roller for conveying a steel sheet, a brush roller for separating foreign matters from the surface of the steel sheet, and a plurality of ringer rollers for removing cleaning oil on the surface of the steel sheet. The ringer roller generally forms a surface of a nonwoven fabric, and the nonwoven fabric absorbs the cleaning oil and wipes the surface of the steel sheet cleanly.

Japanese Unexamined Patent Application Publication No. 2002-11418 discloses an apparatus for removing surface foreign matter on a sheet material (corresponding to a steel sheet). However, by arranging a blowing roller between two spraying nozzles arranged vertically in the advancing direction To a technique for removing foreign matters on the surface of a sheet material. However, it emphasizes only that the cleaning liquid and the brush roller are used, and there is no mention of recovery and recycling of the cleaning liquid.

Generally, the cleaning fluid of the steel sheet used in the automobile production process is contaminated with foreign matters such as powdered flour, urethane powder, MC powder, and grease, which are separated from the iron plate, the cleaning brush away from the cleaning brush, The oil refiner is used as the technology to make the oil.

As shown in FIG. 6, such an oil refiner is bulky and takes up a lot of installation space, and the installation cost is high because it is 2 * 3m and costs 5 to 60 million KRW per unit. Therefore, it is necessary to develop an alternative means of oil organic conversion that can be installed easily at low cost.

On the other hand, the cleaned steel sheet for automobile is taken by a vacuum cup through a centering device and transferred to the upper part of the post-treatment step, and then the upper mold is pressed down. At this time, the cleaned steel plate having a clean surface is subject to a problem such as tearing or cracking due to frictional impact with the upper mold.

That is, since the surface of the steel sheet on which the surface foreign substances are completely removed through the pretreatment step is in a state where the washing oil is completely removed, the frictional force becomes large during the press working. Therefore, technical measures are required to minimize the frictional force of the portion pressed by the upper mold in the state of being transferred to the mold after the steel plate is pretreated.

Korean Patent Publication No. 10-2008-0055268 (Jun. 19, 2008) Japanese Patent Application Laid-Open No. 10-263727 (October 6, 1998) Japanese Unexamined Patent Application Publication No. 2002-11418 (Jan. 15, 2002) Korean Registered Patent No. 10-1241178 (March 23, 2013) Korean Patent No. 10-0918317 (September 18, 2009)

It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a method of manufacturing a steel plate, which can prevent breakage of a steel sheet by reducing friction with an upper mold by spraying lubricating oil onto a steel plate surface before press- And to provide a wet and dry vacuum roller system for automotive steel sheet processing.

Another object of the present invention is to replace the existing oil refiner which is relatively expensive by adopting the oil skimmer and the new refinery drum equipped with the filter, and it is possible to replace impurities in the contaminated refinery oil by the first and second And to provide a wet process and dry vacuum roller system for automobile steel plates capable of maximizing treatment efficiency by filtering.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a steel sheet processing system for automobile according to the present invention comprises: a conveying roller for providing a driving force for conveying a steel sheet; A brush roller having a plurality of cleaning oil spray holes formed in a tapered manner and a vacuum roller for vacuuming the cleaning oil that has been cleaned on the surface of the steel sheet through a plurality of suction holes;
A cleaning oil refining unit for recovering and refining the cleaning oil used in the steel plate cleaning unit and then re-supplying the cleaning oil to the cleaning oil injection hole;
A centering device for aligning the cleaned steel sheet through the steel plate cleaner;
A vacuum adsorption transfer device for vacuum-adsorbing a steel sheet aligned on the centering device with a plurality of buffer cups disposed at a lower end of the device,
A lubricating oil injecting portion including a plurality of lubricating oil injecting nozzles, a cylinder device coupled to the upper side of the bar to move up and down and attached to the vacuum adsorption transferring device, and a rotating device disposed between the barrel and the cylinder device for rotating the bar; The steel plate processing system comprising:

delete

In the automotive steel plate processing system according to the present invention, the lubricating oil injection nozzle may be a circular nozzle or a straight nozzle.

In the automotive steel sheet processing system according to the present invention, the refining oil refining unit may include an oil skimmer which primarily removes foreign matter floating on the surface of the refining oil by recovering used refining oil, and an oil skimmer And a new clean oil drum provided with a filter for filtering the foreign matter by supplying the essential oil.

The automotive steel sheet processing system according to the present invention has the effect of preventing and preventing breakage of the steel sheet by reducing the surface friction during the compression of the upper mold by uniformly spraying the lubricating oil on the surface of the steel sheet before press working.

Further, according to the automotive steel plate processing system of the present invention, by adopting and operating the oil skimmer and the new refining drum equipped with the filter, it is possible to replace the conventional high-price oil refiner and to greatly reduce the installation area, The present invention relates to a steel sheet processing system for automobiles capable of maximizing the utilization of refined oil by filtering and recycling the impurities first and second.

In the automotive steel sheet processing system according to the present invention, the cleaning oil diffused through the cleansing oil diffusion hole of the brush roller removes surface foreign substances, and the surface cleaning agent remaining on the surface of the steel sheet passes through a vacuum roller, The defect rate in the mold process can be greatly reduced.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a schematic view showing an embodiment of a steel sheet processing system for a vehicle according to the present invention.
2 is a sectional view showing the lubricating oil injection nozzle of the present invention.
3 is a perspective view showing the jet head of the linear nozzle of the present invention.
4 is a schematic view showing a state in which the lubricating oil jetting portion of the present invention is installed in a structure capable of lifting and lowering.
5 is a schematic view showing the oil skimmer of the present invention.
6 is a photograph of a typical oil refiner.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

1 is a schematic view showing an embodiment of a steel sheet processing system for a vehicle according to the present invention.

1, the automotive steel plate processing system 1 according to the present invention mainly includes a steel plate washing section 10, a washing oil refining section 50, a vacuum adsorption transfer device 73, a lubricating oil spraying section 80).

Specifically, the steel plate cleaning unit 10 includes a housing 11, a conveying roller 20 installed in the housing 11, a brush roller 22, an auxiliary roller 23, and a vacuum roller 36 .

The housing 11 forms an outer appearance and protects the periphery from the scattering of washing oil generated during operation performed in the inner space 12. The housing 11 includes an inlet 14 into which the steel plate S is inserted, An outlet 16 is formed. The steel sheet S enters the inner space 12 through the inlet 14 and is conveyed along the inner steel sheet conveyance path 18. [ The steel plate S having the outlet 16 at the end of the steel plate conveyance path 18 and having been cleaned is discharged to the outside of the housing 11. [

The bottom surface of the housing 11 can be exemplified as having a tapered cross-section so that used cleaning oil can be easily collected. This enables natural collection of oil by gravity.

A conveying roller 20 is installed in the inner space 12 of the housing 11. A pair of conveying rollers 20 is installed near the inlet 14 and may be added to the process as needed. The conveying roller 20 is driven by a driving source to rotate the steel sheet S in one direction. That is, the steel sheet S conveyed between the pair of conveying rollers 20 is conveyed by the conveying roller 20, (20). ≪ / RTI >

A brush roller 22 is connected to the steel plate conveyance path 18 at a position passing through the pair of conveyance rollers 20 near the entrance. The brush roller 22 is also installed in pairs and is driven by a driving source. The brush roller 22 has a cylindrical shape and an oil transfer pipe is installed on the inner surface of the brush roller 22 to diffuse the oil from the inside to the outer roller surface. A plurality of brushes are installed on the outer surface to rotate and separate the foreign substances on the surface of the steel sheet (S). That is, the surface brush is rubbed against the surface of the steel sheet S together with the cleansing oil diffused in the blowing rollers, thereby separating foreign matter.

The surface of the brush roller 22 is tapered toward the outside so that the oil supplied from the internal oil transfer pipe can be rapidly diffused. Thus, the oil is more efficiently diffused toward the steel plate conveying path 18 A plurality of cleaning oil injection holes 25 are formed. The tapered structure maximizes the oil diffusion area by maximizing the inner and outer pressure difference and the contact area at the contact point.

The cleansing oil injection holes 25 spread the cleansing oil evenly on the surface of the steel sheet S and are formed on the surface of the brush roller 22 to remove the cleansing oil in the direction of the contact point between the brush roller 22 and the steel sheet So that it spreads efficiently.

The pair of brush rollers 22 can be operated to completely remove foreign substances on the surface of the steel sheet by removing foreign substances while rotating in the forward or reverse direction with respect to the conveyance direction of the steel sheet.

The cleaned steel sheet S passing through the pair of brush rollers 22 is completely removed from the surface of the steel sheet S through the vacuum roller 36, thereby completing the surface foreign matter removing operation.

A plurality of suction holes 37 for sucking cleaning fluid are formed in the vacuum roller 36. The suction holes 37 are communicated with the second flow path 40 and the second flow path 40 is provided with a vacuum suction force A vacuum suction device 41 is provided to provide a vacuum.

That is, when the vacuum suction device 41 operates, the cleaning oil on the surface of the steel sheet S is sucked through the suction hole 37 formed on the surface of the vacuum roller, and the oil skimmer 53 And is installed in the cleansing oil tank 51 on which the washing tank 51 is mounted.

In addition, the vacuum roller (36) rotates in a direction opposite to the conveying direction of the steel sheet and sucks the cleaning oil, thereby further enhancing the foreign matter removal efficiency on the surface of the steel sheet.

In order to suck the cleansing oil diffused in the cleansing oil injection hole (25), a tubular cleansing oil recovery unit (30) is provided below the steel sheet transfer path (18). Further, if necessary, the cleaning oil recovery unit 30 may be further provided on the upper part of the steel plate conveying path 18 to increase the efficiency.

The cleaning oil recovery unit 30 is located over the entire width of the steel plate conveyance path 18 so that the cleaning oil is discharged through the first flow path 32 provided at the lower end when the used cleaning oil falls due to gravity.

An opening 32a through which the washing oil flowing down through the tapered bottom surface of the housing 11 can be introduced may be formed at one side of the first flow path 32. [

The cleansing oil discharged through the first flow path 32 is purified through the cleansing oil refining unit 50 and then reused while being repeatedly diffused through the cleansing oil spraying hole 25.

The refining oil refining unit 50 may include an oil skimmer 53 and a refining oil drum 58. The new refinery drum is a drum that filters and stores used refinery oil.

5, the oil skimmer 53 recovers cleansing oil used through the first flow path 32 and cleansing oil sucked through the second flow path to remove foreign matter floating on the surface of the cleansing oil A belt 55 connected to the rotary drum 54 and a belt 55 connected to one side of the downward section of the belt 55. The pair of rotary drums 54 are vertically spaced apart from each other, And a scraper 56 which is disposed in contact with the belt 55 and separates foreign substances adhered to the belt 55. However, the present invention is not limited thereto.

The new refining drum 58 receives and receives cleansing oil processed in the oil skimmer 53, and a filter 59 is installed to filter the foreign substances. At this time, the type of filter can be variously selected according to the kind and size of the foreign matter contained in the cleaning oil, and it can be installed in accordance with the predetermined cleaning oil specification. This minimizes the use of the filtering oil filtering equipment and the installation area by replacing the conventional giant device, thereby greatly reducing the utilization possibility and cost in the existing process.

 The cleansing oil from which the foreign matter has been removed through the filter is again supplied to the broaching roller 22 of the steel plate conveying path 18 and recycled, thereby greatly reducing the cleaning cost.

The steel sheet S cleaned through the steel plate cleaning part 10 is aligned through the steel plate moving part 70 and then moved to the metal mold 90. [ The mold 90 is composed of a fixed lower mold 90a and an upper mold 90b disposed on the lower mold 90a so as to be movable up and down. And the upper mold 90b is pressed when the upper mold 90b is placed on the upper mold 90a.

The steel plate moving unit 70 includes a centering device 71 for aligning the steel sheet discharged from the outlet of the housing 11 and a steel plate S aligned on the centering device 71 by vacuum suction, And a vacuum adsorption transfer device 73 for placing the vacuum adsorption device 73 on the lower mold 90a.

The vacuum adsorption transfer apparatus 73 includes a robot arm 74 that rotates and elevates to a predetermined position through an automatic control program and a vacuum cup 75 provided at an end of the robot arm 74 And the components such as the automatic control program, the robot arm, and the buffer cup are already well known in the art, and thus a detailed description thereof will be omitted.

On the other hand, in the present invention, cracks or breakage occur in the steel sheet due to friction during the process of pressing the steel sheet with the upper metal mold by pressing the cleaned steel sheet from which surface foreign substances have been completely removed, And lubricating oil is sprayed to the surface of the steel sheet before press working through the lubricating oil spraying part (80) in order to prevent breakage.

The lubricant spraying part 80 may be installed on one side of the mold 90 or on the vacuum adsorption transfer device 73. However, in the case where the lubricant spraying section 80 is provided as a separate device on one side of the mold 90, installation cost due to the installation of additional devices such as the robot arm 74 is excessive, It is necessary to secure an additional space in the existing equipment and reset the control value so as not to overlap with the movement radius, and the vacuum suction transfer device and the lubricant spraying part 80 are moved alternately with each other, there is a problem.

Therefore, it is advantageous in that the lubricant spraying section 80 is advantageously installed in parallel with the vacuum suction transfer device 73 from the viewpoint of installation cost and space limitation, and can be easily installed in a conventional apparatus.

More specifically, the lubricant spraying portion 80 includes a lubricating oil injection nozzle 81 and a lubricating oil supply pipe 84 for supplying lubricating oil to the lubricating oil injection nozzle 81, And a control unit 85 for automatically controlling the supply amount of the lubricating oil.

In this case, the injection efficiency may be more efficient, and the upper mold 90b may be divided into two or more portions depending on the processing form of the steel plate. In this case, the lubricant injection nozzle 81 may be disposed between the vacuum cups 75, May be provided corresponding to the contact portion.

Each lubricating oil injection nozzle 81 is connected to the lubricating oil supply pipe 84 and serves to inject lubricating oil supplied to the surface of the steel plate. A straight nozzle including a nozzle head 82 in which a spray angle can be widely spread in all directions by using a circular nozzle and in which a straight spray hole 83 having a straight cut-off structure is formed is exemplified .

It is preferable that the lubricating oil injection nozzle 81 having such a structure is spread over the surface of the steel sheet with a small amount of lubricating oil. In the straight type nozzle head, since the straight type injection hole has a wider spray area than the circular type injection hole, There is an advantage that the lubricating oil of a fine droplet can be uniformly injected. In addition, the circular nozzle is advantageous in that it can be ejected widely in all directions at once.

As shown in FIGS. 2 and 3, the linear nozzle spray hole 83 has a tapered cross-sectional structure that widens toward the openings in both the lateral and longitudinal directions, so that the lubricant can be diffused well.

In the linear nozzle spray hole 83, lubricating oil is injected in the shape of a fan, and droplets of the lubricating oil can be injected in a micro-particle state.

A solenoid valve (not shown) is preferably installed on one side of the lubricating oil supply pipe 84 so as to control the lubricating oil injection amount or the injection pressure.

Hereinafter, a process in which the steel sheet is discharged from the steel sheet cleaning part and the lubricant is applied to the surface of the steel sheet through the steel sheet lubricant injection part will be described.

First, the steel sheet S discharged from the outlet 16 of the housing 11 is aligned at a predetermined position in the plate-shaped centering device 71. The aligned steel plate S is sucked and fixed in the bucket cup 75 of the vacuum adsorption transfer device 73 and then the robot arm 74 is rotated and disposed on the lower mold 90a.

Next, the vacuum suction force acting on the buffer cup 75 is released to seat the steel plate S on the lower mold 90a, and the robot arm 74 is raised to a predetermined height.

Next, when the robot arm 74 rises, the solenoid valve is opened in the control section 85 of the lubricant oil spraying section 80 to cause the lubricant oil spraying nozzle 81 disposed between the buffet cups 75 to spray the lubricant oil .

Here, the reason for raising the robot arm to a predetermined height and then injecting the lubricating oil from the lubricating oil injection nozzle is that it is difficult to exert the attraction force because the lubricating oil is injected into the burble cup when injecting the lubricating oil. If the injected lubricating oil is reduced to nano size, So that it is possible to efficiently spray the droplets without raising the temperature. That is, depending on the diameter of the injection nozzle, lubricant may be injected from the nozzles disposed between the bag cups simultaneously with the seating of the steel sheet on the lower mold 90a.

Hereinafter, another embodiment of the lubricant jetting portion of the present invention will be described.

As shown in FIG. 4, the lubricating oil injecting portion 80 of the present embodiment includes a bar provided with a plurality of lubricating oil injection nozzles 81, a cylinder device 88 coupled to the upper side of the bar, And a rotating device 89 disposed between the bar 87 and the cylinder device 88 for rotating the bar.

In this case, the steel plate is placed on the lower mold 90a and then the robot arm 74 is raised to a predetermined height. In the cylinder device 88, (74) and the lubricant oil spraying nozzle (81) to a predetermined height.

In addition, the control unit 85 can prevent the lubricating oil from adhering to the burr cup when injecting the lubricating oil by injecting the lubricating oil while rotating the bar, and can more easily control the lubricating oil injecting pressure supplied to the plurality of nozzles There are advantages.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: steel plate processing system 10: steel plate washing machine
11: housing 12: inner space
14: entrance 16: exit
18: steel plate conveying path 20: conveying roller
22: Brush roller 25: Three oil injection holes
30: Oil refining unit 32:
32a: Opening hole 36: Vacuum roller
37: suction hole 40: second flow path
41: vacuum suction device 50: cleaning oil refining part
51: Oil refinery tank 53: Oil skimmer
54: rotary drum 55: belt
56: Scraper 58: New clean oil drum
59: filter 70: steel plate moving part
71: Centering device 73: Vacuum adsorption conveying device
74: Robot arm 75: Bug Cup
80: Lubricating oil spraying part 81: Lubricating oil spraying nozzle
82: nozzle head 83: flat spray hole
84: Lubricant supply pipe 85:
86: Solenoid valve 87: Bar
88: Cylinder unit 89: Rotary unit
90: mold 90a: lower mold
90b: Upper mold steel plate (S)

Claims (4)

A brush roller having a plurality of cleaning oil injection holes tapered outwardly toward the outside so that the oil supplied from the oil transfer pipe on the inner surface of the roller rapidly spreads; A steel plate cleaner including a vacuum roller for sucking clean oil on a surface thereof through a plurality of suction holes;
A cleaning oil refining unit for recovering and refining the cleaning oil used in the steel plate cleaning unit and then re-supplying the cleaning oil to the cleaning oil injection hole;
A centering device for aligning the cleaned steel sheet through the steel plate cleaner;
A vacuum adsorption transfer device for vacuum-adsorbing a steel sheet aligned on the centering device with a plurality of buffer cups disposed at a lower end of the device,
A lubricating oil injecting portion including a plurality of lubricating oil injecting nozzles, a cylinder device coupled to the upper side of the bar to move up and down and attached to the vacuum adsorption transferring device, and a rotating device disposed between the barrel and the cylinder device for rotating the bar; Wherein the steel plate processing system comprises:
The method according to claim 1,
Wherein the lubricating oil injection nozzle is a circular nozzle or a straight nozzle.
The method according to claim 1,
The refining oil refining unit,
An oil skimmer that primarily removes foreign matter suspended on the surface of the washing oil and a filter that receives the washing oil treated by the oil skimmer and filters the foreign matter secondarily, Wherein the machining center is a machining center. delete

Images