KR101617400B1 - Manufacturing method of slide rail - Google Patents

Abstract

The present invention relates to a method to manufacture a slide rail and, more specifically, relates to a method to manufacture a slide rail, sequentially allowing a steel plate to be uncoiled to be rolled with a thickness of a slide rail, be formed by passing through a roll forming device; be cut into a predetermined length; and be perforated to have a plurality of through holes, thereby manufacturing a slide rail. The method to manufacture the slide rail comprises: a step of uncoiling a steel plate wound on an uncoiler in such a manner that an upper surface and a lower surface of the steel plate are engaged by a roller to be pulled; a rolling step of rolling the uncoiled steel plate with the thickness of a slide rail by allowing the uncoiled steel plate to pass between rollers of a rolling device; a roll forming step of leading the steel plate which has undergone the rolling step in the roll forming device, and bending a lateral surface of the steel plate while allowing the steel plate to pass through the roll forming device to be formed as a rail; a cutting step of cutting the formed rail, which has undergone the roll forming step, into a predetermined length; and a hole perforating step of perforating the cut rail to have holes formed thereon. Accordingly, the series of steps are sequentially performed to manufacture a slide rail. According to the present invention, production of a poor product is able to be prevented.

Description

{Manufacturing method of slide rail}

The present invention relates to a method of manufacturing a slide rail, and more particularly, to a method of manufacturing a slide rail, which comprises rolling a steel plate to a thickness of a slide rail by uncoiling, forming the steel plate through a roll forming machine, cutting the steel plate into a predetermined length, And more particularly to a method of manufacturing slide rails sequentially.

Conventional slide rails are installed on both inner sides of the storage mechanism such as a kimchi refrigerator, a dishwasher, a refrigerator, and a wine refrigerator in which a drawer for storing a drawer is housed in a desk or a cabinet or a kimchi. The rail of the metal plate body is usually provided with two to three rails.

The slide rail composed of two rails is constituted by an outer rail integrally fixed to the wall surface of the housing mechanism by a fastening means and an inner rail smoothly moving by the outer rail. In the case of three rails, And an intermediate rail is provided between the inner rail and the inner rail.

As shown in Patent Registration No. 1993-1122 having such a configuration, the curved ridges formed on the inner rails and the outer rails and the rotors piled up by the inner rails and the outer rails are formed to have substantially the same outer peripheral curvature In addition, in order to rotatably lay the intermediate rotating body between the rotating bodies, a rotating support portion is provided on the inner surface side of the inner rails and the outer rails, and a trough groove is formed in the supporting portion, So that the intermediate rotating body having substantially the same structure is sandwiched.

Such a slide rail is usually formed by forming a cold-rolled steel sheet having a thickness of about 1.3 to 2 mm into an outer rail and an inner rail in accordance with a molding method using roll forming, washing with an acid treatment and drying, And the inner rails are smoothly slidably moved in the outer rails by inserting and ballasting the ball bearings at predetermined intervals by manual operation.

Conventional slide rails are manufactured by rolling a steel plate to a thickness corresponding to the thickness of a slide rail in a separate rolling mill, purchasing a rolled steel plate, placing it on an uncoiler, passing through a roll forming machine while uncoiling, Length and then loaded, the stacked rails were conveyed to a press, a press process was performed, and holes were drilled on the rails.

However, conventionally, each process is not performed by a series of processes but is separately performed. Therefore, there is a problem in that the manufacturing cost of the slide rail is increased as the rail is manufactured. In addition, in the process of drilling holes in the rail cut through the pressing process, There is a problem that defective products are generated because the bending angle of the product is changed.

Registered Patent Publication No. 0259515 (Registered on March 23, 2000, entitled "Roll Forming Machine and Stacker for Roll Forming Machine") Registered Patent Publication No. 0819550 (Registered Date: Mar. 28, 2008, title of invention: Method of manufacturing slide under rail)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method of manufacturing a slide rail by sequentially performing a steel plate uncoiling process, a rolling process, a roll forming process, a cutting process, And a bending correction process of the rail is performed after the hole drilling process, thereby preventing the generation of defective products due to the bending angle change.

According to an aspect of the present invention, there is provided a method of manufacturing a steel sheet, comprising: an uncoiling process in which a steel sheet is rolled up by a rolling roller (10) to uncoil a steel sheet wound around the uncoiler; A foreign matter removing process of contacting a wire brush 20 rotated by a motor to the upper and lower surfaces of the uncoated steel sheet to remove foreign substances present on the surface of the steel sheet; A rolling process in which a steel sheet subjected to a foreign matter removal process is passed between rolling rollers (10) of a rolling mill to roll it to a sliding rail thickness; A roll forming process in which a steel plate subjected to a rolling process is drawn by a roll forming machine and passed through a roll forming machine to bend the side face of the steel plate and form a rail; A cutting process in which a roll forming process is performed and then cut to a predetermined rail length; A hole boring process to perforate a hole on the cut rail; After the hole drilling process, the outer side surface shape is drawn between a pair of guide rollers 30 formed to have the same shape as that of the rail, so as to pass through the guide rollers 30 for correcting the bending angle of the rail A bending correction process for bending the roll to be bent at the same bending angle as that of the rail subjected to the roll forming process; And rolling the steel sheet by sequentially passing through at least two rolling rollers 10 arranged so as to be spaced apart from each other as the distance from the rolling rail 10 to the rear end decreases, The process and the hole boring process are simultaneously performed through one pressing process.

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According to the slide rail manufacturing method having the above-described structure, the slide rail is manufactured by sequentially passing the uncoiling process, the rolling process, the roll forming process, the cutting process, and the hole drilling process of the steel sheet, It is possible to expect a cost saving effect and it is possible to prevent the occurrence of defective products due to the change of the bending angle caused when the holes are drilled by performing the bending correction process of the rail in the last step.

1 is a flowchart showing a manufacturing process of a slide rail according to the present invention,
FIG. 2 is a schematic view showing a manufacturing state of a rail according to the procedure of FIG. 1,
3 is a view showing a state in which a steel sheet is rolled by using two rolling rollers according to the present invention,
4 is a view illustrating a manufacturing process of a slide rail including a foreign matter removing process and a bending correction process according to the present invention,
FIG. 5 is a view showing a state of removing foreign matter on the surface of a steel sheet using the wire brush according to the present invention, FIG.
6 is a view showing a state in which a bending angle of a rail is corrected by a pair of guide rollers according to the present invention.

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

As shown in FIGS. 1 to 6, the slide rail manufacturing method according to the present invention basically includes an uncoiling process S10, a rolling process S20, a roll forming process S30, a cutting process S40, And the step (S50) are sequentially performed to manufacture a slide rail through a series of steps.

The uncoil step S10 is to uncoil the steel sheet wound on the uncoiler by engaging the upper and lower surfaces of the steel sheet with the rolling roller 10 of the rolling mill provided for rolling at the rear end of the uncoiler in which the steel sheet is wound.

Accordingly, the moving speed of the steel plate uncoiled in the uncoiler is determined according to the rotating speed of the rolling roller 10. When the rolling roller is rotated rapidly, the steel plate is rapidly uncoiled. When the rolling roller is rotated slowly, Is slowly uncoiled in response to this.

The rotation speed of the rolling roller 10 is set so that the rotation speed of the rolling roller is changed according to the state of the steel sheet which enters the roll forming machine according to the roll forming speed of the steel sheet.

The rolling process S20 is a process of rolling a steel sheet uncoiled in the uncoiler, and passing the steel sheet through the rolling rollers 10 of the rolling machine, thereby rolling the steel sheet to a thickness of the sliding rail.

The steel sheet to be wound around the uncoiler is usually manufactured using a steel sheet having a thickness of about 2.3 to 3 mm, and the slide rail is rolled to a steel sheet having a thickness of 1.3 to 2 mm.

Conventionally, there is a problem that the steel sheet is rolled by a separate rolling mill, the rolled steel sheet is purchased from a slide rail manufacturer, and then roll-formed into a slide rail. However, The roll forming process, the cutting process, and the hole drilling process are performed as a series of processes.

In the rolling process, rolling can be performed using one rolling roller or a plurality of rolling rollers arranged at regular intervals, but preferably several rolling rollers are arranged in a stepwise manner so that the interval between the rolling rollers decreases So that the rolling of the steel sheet is performed in a stepwise manner while sequentially passing through a space between a plurality of the rolling rollers arranged afterward.

As the rolling of the steel sheet is performed stepwise, it can be easily rolled, and other parts including the rolling roller can be prevented from being damaged.

The roll forming step S30 is a step of drawing a steel sheet subjected to a rolling process into a roll forming machine and passing the sheet through a roll forming machine while bending a side surface of the steel sheet and forming the roll into a rail. And the side surfaces are gradually bent while being moved to form the slide rail.

The roll forming process using the roll forming machine is already known and is the same as the known roll forming process.

After the roll forming process, a cutting process (S40) for cutting to a predetermined rail length and a hole drilling process (S50) for drilling a hole on the cut rail are performed.

In the cutting process (S40), the rails are cut through a cutter or cut through a press. Information about the cut length is obtained by receiving rotation information of a forming roller detected from a rotary encoder provided on a forming roller of a roll forming machine The rail is continuously cut at a predetermined length through the input information.

The hole drilling process (S50) is a process of drilling a hole necessary for the slide rail, and the hole is drilled through the press.

At this time, in the present invention, the cutting process and the punching process can be simultaneously performed through a single pressing process.

That is, it is possible to perform all of the two steps in a single pressing step by cutting the rail together with the cutting of the rail, thereby advantageously shortening the manufacturing time and increasing the production amount.

Meanwhile, in the present invention, the wire brush 20 is brought into contact with the upper and lower surfaces of the uncoiled steel sheet to remove foreign substances present on the surface of the steel sheet in the previous step of the rolling process (S15) .

The reason why the foreign matter removal process is performed is to smoothly roll the steel sheet and prevent the foreign matter from being rolled on the surface of the steel sheet to improve the rolling quality.

The wire brush 20 is preferably configured to be rotated by receiving a driving force of the motor.

After the hole boring process, the bending correction process (S60) is performed to correct the bending angle of the rail.

The reason why the bending correction process is performed is to prevent the occurrence of defective products because defective products may be generated by changing the bending angle through the cutting process and the hole boring process.

In the bending correction process, the bending angle can be restored by allowing the guide roller 30 to pass through a pair of guide rollers 30 having a spacing space therebetween.

At this time, the outer shape of the guide roller 30 is formed to have the same shape as that of the side bent shape of the rail subjected to the roll forming process, and the angle of bending of the rail is restored while passing between the pair of guide rollers.

On the other hand, in the rolling mill, the steel sheet fed into the roll forming machine is lowered further than the steel sheet fed into the rolling mill in the uncoiler so as to be drawn in. The reason for this is that when the steel sheet is pulled into the roll forming machine while being tight in the rolling machine when the slide rail is manufactured, the roll forming operation may not be smoothly performed, and defects may be generated, which may lead to breakage of the rolling machine or roll forming machine.

Therefore, the steel sheet fed into the roll forming machine is allowed to enter the rear end of the rolling machine with margin so that the deflection state of the steel sheet fed into the roll forming machine is continuously checked, The rolling speed is controlled to control the rolling speed of the steel sheet.

According to the present invention having the above-described processes, the slide rails are sequentially manufactured through the uncoiling process, the rolling process, the roll forming process, the cutting process, and the hole drilling process, The manufacturing cost can be greatly reduced, and mass production can be achieved.

In particular, when a slide rail is manufactured through a series of processes including a foreign substance removal process and a bending correction process, it is possible to manufacture a product much higher in quality and cost competitiveness than other products.

10: Rolling roller 20: Wire brush
30: guide roller
S10: Uncoiling process S15: Foreign matter removal process
S20: rolling process S30: roll forming process
S40: Cutting process S50: Hole drilling process
S60: Bending correction process

Claims (6)

An uncoiling process in which the steel sheet upper and lower surfaces are engaged with the rolling rollers 10 and pulled to uncoil the steel sheet wound around the uncoiler;
A foreign matter removing process of contacting a wire brush 20 rotated by a motor to the upper and lower surfaces of the uncoated steel sheet to remove foreign substances present on the surface of the steel sheet;
A rolling process in which a steel sheet subjected to a foreign matter removal process is passed between rolling rollers (10) of a rolling mill to roll it to a sliding rail thickness;
A roll forming process in which a steel plate subjected to a rolling process is drawn by a roll forming machine and passed through a roll forming machine to bend the side face of the steel plate and form a rail;
A cutting process in which a roll forming process is performed and then cut to a predetermined rail length;
A hole boring process to perforate a hole on the cut rail;
After the hole drilling process, the outer side surface shape is drawn between a pair of guide rollers 30 formed to have the same shape as that of the rail, so as to pass through the guide rollers 30 for correcting the bending angle of the rail A bending correction process for bending the roll to be bent at the same bending angle as that of the rail subjected to the roll forming process;
A slide rail is manufactured through a series of steps,
In the rolling process, the steel sheet is rolled by sequentially passing two or more rolling rollers 10 arranged so as to be spaced apart from each other toward the rear end,
Wherein the cutting process and the hole boring process are simultaneously performed through a single press process.
delete delete delete delete The method according to claim 1,
The steel sheet fed into the roll forming machine in the rolling mill is further lowered inward than the steel sheet fed into the rolling mill in the uncoiler, and the deflection state of the steel sheet fed into the roll forming machine is checked. And controlling the rotating speed of the rolling roller (10) so as to control the rolling speed of the steel strip.

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