KR100264053B1 - Forming method for non-slip pallet with different height along its width - Google Patents

Abstract

PURPOSE: A producing method for a non-slip plate is provided to massively produce the non-slip plate having many non-slip protrusions with excellent intensity and precision by a general forming machine. CONSTITUTION: To produce a non-slip plate using a forming machine, a first upper molding roller and a first lower molding roller are assembled to produce a non-slip plate having different right and left shapes in a first process; a shaft pressure adjusting handle is tightened to equalize iron plate pushing pressure between the upper and the lower molding roller and a first shaft is idled in a second process; the shaft pressure adjusting handle is tightened to make largely bent portion pressure three times as strong as small bent portion pressure between second to seventh upper and lower molding rollers and the upper shaft of each line having over 45 and over 70 bending degrees is idled in a third process; largely bent portion pressure becomes less than one third of pressure in a first line, small bent portion pressure becomes less than one fourth of pressure in the first line and the upper shaft is idled in a fourth process; a third stage bent portion pressure in a largely bent portion is adjusted to be a half of pressure in the first line in a fifth process; pressure of a line having 45 bending degrees in a third stage bent portion is almost equalized to the pressure in the fifth process and the upper shaft is idled in a sixth process; pressure of a line having more 70 bending degrees in the third stage bent portion, is almost equalized with pressure in the sixth process and a spring-back is prevented by forming the center of the lower molding roller little convex in a seventh process; and the upper shaft of a line in front of a final line, is idled in the eighth process.

Description

Method for manufacturing non-slip plate with many non-slip protrusions by forming machine

The present invention relates to a method for manufacturing a non-slip plate having a plurality of non-slip protrusions, and more particularly, to a method for manufacturing a non-slip plate with a forming machine.

The non-slip boards commonly used are different in shape from left to right and in height from left to right, and the thickness is 3-5m / m, the material is steel, and a number of non-slip protrusions D are formed in the entire longitudinal direction of the central part of the upper surface. It is widely used as a parking facility with modernized facilities or as a scaffold for various steel structures such as construction scaffolding or ships.

The method used for manufacturing this is a pressing method, which is bent by inserting a steel plate cut to a suitable length and width into a large press, which is inconvenient due to various complicated jig and peripherals, and it is not economical and the productivity per unit time is low. Since mass production was nearly impossible, these factors were the main reason for the high cost. In addition, the problem of lowering the added value was raised because of the poor precision of the product. The non-slip protrusion D is pre-processed using a press, and the strength and precision of the product are good, and in order to develop a forming method that enables mass production per unit time, the industry has spared a lot of research and investment for many years. It is known that it is almost impossible to precisely fabricate a thick steel sheet by forming method with a different bending shape, a large bending angle, and a thickness of 3-5m / m.

Accordingly, the object of the present invention is to provide a forming method that enables mass production of a product having good strength, precision, and general condition per unit time.

Another object of the present invention is to provide a method for producing a non-slip plate having a non-slip protrusion is formed by using a conventional forming machine.

The present invention according to the first check to achieve the above object, the first forming roller and the first forming roller and the lower forming roller, the first step of assembling the roller for manufacturing the non-slip plate is different from the left and right, and the iron plate is the first forming roller When the steel sheet is pressed into the final forming roller and finished at the last forming roller, the pressing force between the first upper roller and the lower forming roller is tightened with the axial pressure adjusting handle so that the bending part and the bending part are the same. The first axis is the second process that rotates the idler, and the plate pressing pressure between the second and seventh upper and lower rollers is at least three times higher in the bending part than in the bending part. Tighten the axial pressure adjustment handle as much as possible, and the upper axis of each line where the bending angle of the side with the most bending portion exceeds 45 degrees and 70 degrees The third step of conveying and the pressing force of the iron plate at the part where the bending angle of the one with the most bending part starts to exceed 80 degrees, the one with the most bending part being less than one third or less than the pressure applied on the first line. The pressure on the opposite side is adjusted to be 1/4 or less than the pressure applied on the first line, and the upper axis is rotated to idle by the fourth process, and on the left and right sides of the part where the three-stage bending of the bending part is started. The 5th process of adjusting the pressing force of the iron plate to be applied almost equally to the left and right, but to be about 1/2 of the pressure applied in the first line, and the bending angle of the three-stage bending part of the side having the most bending part is about 45 degrees. The sixth process of rotating the upper shaft to idle while the iron plate pressing pressure of the line reaching to is substantially the same as the pressure of the fifth process, and the bending angle of the three-stage bending portion with the large bending portion is 70 degrees. The iron plate pressing pressure of the line exceeding is the same as that of the sixth process, and slightly convex the central part of the lower forming roller to prevent the spring-back phenomenon of the iron plate, and the upper part of the line before the final line. The shaft proposes a method of manufacturing a non-slip plate having a large number of non-slip protrusions formed by an eighth step of rotating the children with a forming machine.

1 is a plan view showing the configuration of a forming machine for manufacturing a non-slip plate having a plurality of non-slip protrusions formed in advance in a central portion in accordance with a preferred embodiment of the present invention.

2 is a rear view of the forming machine shown in FIG.

3 is a perspective view showing a non-slip plate made by the manufacturing method of the present invention.

4 to 17 is a flow chart illustrating a method for manufacturing a non-slip plate with a non-slip plate formed with a plurality of non-slip protrusions in a central portion in advance in a forming machine according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: Base 2: Left frame

3: right frame 4: driving motor

5, 5a: power transmission shaft 6: reduction gear

7: iron plate guide roller 8: uncoiler

9: shaft pressure adjustment handle

The forming machine used in the present invention uses a forming machine commonly used as shown in FIG. 1 and FIG. 2, and if the iron plate used is a conventional color sheet (prefabricated building material) and a thickness of 1 m. / m or less, it is possible to smoothly produce products with different left and right heights and different forms of left and right through the forming machine without applying a tricky technique like the prior art, but the invention of the invention is a thick one with a thickness of 3-5 m / m It is almost impossible to produce with a technique applied to a conventional forming machine because it is used to manufacture non-slip pallets with different left and right heights and different left and right shapes. Therefore, the present invention solved the above-mentioned products that were produced only through the pressing method by the forming method.

Hereinafter, a method of manufacturing a non-slip pallet according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1, 2 and 4 to 17.

Example 1

As shown in FIG. 2 and FIG. 4, in order to produce non-slip pallets having different heights and shapes, the steel plate a mounted on the uncoiler 8 is first plate-formed roller 7. After passing between the first upper roller (50) and the lower roller to enter between the roller (70).

That is, when the iron plate (a) enters between the first upper forming roller 50 and the lower forming roller 70 described above, the upper shaft 10 is rotated to idle without assembling gears. At this time, since the gap between the upper forming roller 50 and the lower forming roller 70 is smaller than the thickness of the iron plate, even when the upper shaft 10 is in the idle state, the steel plate a enters the lower shaft under pressure (friction force). There is no problem in operation because it enters the same state as the rotation speed of 30).

Subsequently, as shown in FIGS. 2 and 5, the iron plate a having undergone the first process is inserted between the second upper roller 51 and the lower roller 71. In this case, the upper shaft 11 is forcedly rotated by the gear 90 and the gear 101 engaged with each other while being assembled to the upper shaft 11 and the lower shaft 31.

Here, the pressing force of the iron plate at the left and right ends of the first up / down forming roller ((50, 70) is equally adjusted, which can be adjusted through the axial pressure adjusting handle 9, which is 0.25kg / cm ^{2 in the} whole process. The axial pressure adjusting handle 9 has a structure that allows the pusher assembled between the upper end of the frame and the shaft to be screwed up and down and is known in the art.

Meanwhile, as described above, the reason why the pressing force of the iron plate of the up and down forming rollers (50 and 70) should be maximum is that when bending the steel plate on which the non-slip protrusion is formed as shown in FIG. This is because the steel plate tends to be inclined toward many parts, and therefore, the first line should be strongly gripped, and even afterwards, the steel plate will continue to be tilted, so the pressure on the left and right sides will be adjusted differently. When the steel plate enters the second up-and-down forming roller, the pressing force of the iron plate on the side with the large bending part is to be applied at least three times higher than the other side.

The reason is that the left and right sides of the iron plate start to bend, and the phenomenon of bending the bending part toward the many side is outstanding. Therefore, the iron plate pressing pressure on the left side should be at least three to three times higher than the iron plate pressing pressure on the right side to correct the phenomenon. In the practice of the present invention, the iron plate pressing pressure on the left side is 0.1kg / cm ² and the right side Iron pressing pressure was set at 0.03kg / cm ² and there were no defects in the process. (Maximum left pressure: 0.15kg / cm ² ). Of course, the above-mentioned iron plate pressing pressure may vary somewhat depending on the shape of the product.It is important to conclude that the iron plate pressing pressure on the side with a large number of bending parts should be at least three times higher than the iron pressing pressure on the other side. Was confirmed through hundreds of experiments.

Next, as shown in FIG. 6 and FIG. 7, the iron plate which has undergone the first and second processes, preferably the iron plate (a) which starts to be bent, has a third up / down forming roller (52, 72). ) And the fourth up and down forming rollers 53 and 73, the bending angles of the left and right sides are clearly different.

On the other hand, the pressing pressure applied to the steel plate (a) passing through the second up and down forming rollers (51, 71) through the seventh up and down forming rollers (59, 79) of FIG. The upper axles (11, 12, 13, 17, 18, 19) of each roller whose bending angle is greater than 45 degrees and 70 degrees on the side where the bent part is adjusted to be at least three times larger than the opposite side are rotated to idle. do. That is, only when the upper shafts 11, 12, 13, 17, 18, and 19 are rotated by the idlers, the iron plate can be bent without difficulty, the cracks are not generated on the surface of the iron plate, and the pulling phenomenon is reduced.

Afterwards, the pressing force of the iron plate of the line where the bending angle of the side with the most bending part starts to exceed 80 degrees is less than 1/3 of the pressure exerted on the first line by the side with the most bending part and the opposite side of the first side The upper and lower forming rollers (50, 70) to be less than 1/4 of the pressure applied, the upper axis was rotated to idle. At this time, only when the pressure is reduced and the upper shaft is rotated to idle, bending at a severe angle is smooth, cracking does not occur on the surface of the iron plate, and scratches do not occur.

Next, the left and right sides of the three-stage bending part where the bent part has a lot of pressure are applied to almost the same pressure, but the pressure is reduced to about 1/2 of the pressure applied to the first up / down forming rollers 50 and 70. Again, the pressure is adjusted to be higher than the pressure on the front line and lower than the pressure on the first line for smooth bending.

Afterwards, the plate pressing pressure of the line where the bending angle of the three-stage bending part with the many bending parts reaches about 45 degrees was maintained to be almost the same as the pressure of the previous line, and the y-axis was rotated to idle. This is to prevent the phenomenon and to bend smoothly.

Next, the pressing force of the iron plate of the line in which the bending angle of the three-stage bending portion exceeds 70 degrees is almost equal to the pressure of the line in front of it, and the center portion of the lower forming roller 81 is slightly convex to spring the iron plate. The white phenomenon was eliminated. At this time, it is preferable that the curvature R = 1000 (m / m) on the basis of the width of the iron plate 300m / m.

After that, as shown in FIG. 17, the upper shaft 23 of the final line completed the product while being rotated by the children. At this time, it was found that it is most suitable for product molding that the pressing force of the iron plate from the upper forming roller and the lower forming roller in front of the final process is the same until the final process.

As described above, the present invention relates to a method for manufacturing a non-slip plate formed with a plurality of non-slip protrusions in advance in the center portion of the left and right non-slip type in a forming machine. In addition, the surface condition, bending angle, dimensions of the finished product, etc. can be obtained more precisely than the conventional products, and there are many useful effects such as lowering production cost and increasing internal and external competitiveness.

Claims (4)

The left and right frames are installed on the base, and the axle and the bottom shaft are assembled to the left and right frames according to the number of predetermined lines, and the upper and lower rollers are assembled on the axle and the lower shaft, respectively. An axial pressure control handle is installed, and an uncoiler and a guide roller which can be rewound through a coiled iron plate to be processed are provided, and a lower gear is connected to each of the lower shafts so that the power from the driving motor is reduced. In the method for producing a non-slip plate by using a forming machine that is uniformly transferred to the entire lower shaft through a power transmission shaft, the upper forming roller and the lower forming roller roller for manufacturing a non-slip plate of different left and right shapes. 1st process of assembling with: steel plate enters the first forming roller and is completed in the last forming roller When pressing, the plate pressing pressure between the first upper roller and the lower roller is tightened with the axial pressure adjusting handles so that the bending part and the bending part are the same, and the first upper axis rotates with the children. A second step; The pressing force of the steel plate between the second and seventh upper and lower rollers is tightened by the axial pressure adjusting handle so that the bending part is at least three times higher than the bending part is smaller than the lower part. A third step of causing the upper axis of each line with the bending angle of the side exceeding 45 degrees and 70 degrees to be idled; The pressing force of the steel plate at the part where the bending angle of the bending part starts to exceed 80 degrees is less than 1/3 of the pressure applied on the first line. A fourth step of adjusting the zoom to be less than 1/4 of the pressure applied to the upper axis and rotating the upper axis to the children; A fifth step of adjusting the pressing force on the left and right sides of the part in which the three-stage bending of the bending part with a large number of bending parts is applied to be approximately equal to the left and right, but about 1/2 of the pressure applied in the first line; The sixth process wherein the upper plate is rotated to idle while the pressing force of the iron plate of the line where the bending angle of the three-stage bending portion with the larger bending portion reaches about 45 degrees is almost the same as the pressure of the fifth process. The steel plate pressing pressure of the line where the bending angle of the three-stage bending part of this many side exceeds 70 degrees is made to be slightly convex in the center part of the lower forming roller while being almost the same as the sixth process, thereby preventing the spring-back phenomenon of the steel plate. 7th process which makes it possible: The upper axis of the line in front of a final line consists of an 8th process which rotates idlely, The manufacturing method of the non-slip board with many non-slip protrusions formed with a forming machine. According to claim 1, wherein the curvature of the center portion of the lower forming roller in the seventh process is R = 1000 (m / m) based on when the iron plate width is 300 m / m, left and right asymmetrical in advance Method for manufacturing a non-slip plate with a large number of non-slip protrusions by a forming machine. According to claim 1, wherein the pressing force from the upper forming roller and the upper forming roller and the lower forming roller in front of the final process is the same until the end process, the left and right asymmetrical and the central part A method of manufacturing a non-slip plate having a plurality of non-slip protrusions formed in advance by a forming machine. The method of claim 1, wherein the pressing force applied between the upper and lower forming rollers of the first line is the maximum pressure in the entire process, and the left and right non-slip projections are formed in advance in the center and a plurality of non-slip protrusions are formed in advance. To make a non-slip plate with a forming machine.