KR101549402B1 - a consecutive presser and a plate fabricating method thereof - Google Patents

Abstract

According to the present invention, a continuous press machine includes: a plate material supply device which draws and cuts a roll plate material by a predetermined length and connects both lateral ends of the cut plate material together to supply the plate material to a product forming part; a plate material drawing part to supply the plate material wound in a roll shape at regular intervals; a connection pattern forming mold to form a pattern for connecting the plate materials together; and a cutting connection mold to cut the plate material, wherein the connection pattern has been formed, into a predetermined length. The cutting connection mold tilts an end upward in the transfer direction from a flat surface of the plate material at a predetermined angle of θ based on the horizontal transfer direction after cutting the plate material.

Description

[0001] The present invention relates to a continuous press machine and a plate fabricating method,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous press machine and a continuous press machine. More particularly, the present invention relates to a continuous press machine and a continuous press machine.

The continuous press unit corresponds to a press apparatus in which a plurality of stepwise press processes are successively implemented in one apparatus.

As a recent prior art of continuous press machine, Korea Patent No. 10-0752690 (hereinafter referred to as " 690 patent ") by the same applicant can be considered. This application improves the problem of the '690 patent, so that the main contents of the' 690 patent will be described below.

2A and 2B are a plan view and a side view showing a schematic configuration of a continuous press according to the prior art.

As shown in these drawings, the continuous press machine 1 according to the '690 patent includes a press main body 10, and a plate material supply unit 30 for supplying a plate material in a width direction of the press main body 10, A conveyance connection pattern forming section 30 for forming a conveyance connection pattern on the plate surface of the plate material supplied from the plate material supply device 20 and a plate material on which the conveyance connection pattern is formed, And a product forming unit 40 for forming a forming pattern on a plate material which is provided along the longitudinal direction of the press body 10 from a region adjacent to the transfer connecting pattern forming unit 30, And a control unit (not shown) for controlling the driving of the press body 10, the plate material supply unit 20 and the plate material transfer unit 40.

The press main body 10 has a structure in which upper and lower mold holders 15 are coupled to the upper ram 11 and the lower base 13 along the longitudinal direction in the same manner as the general continuous press machine 1. The upper and lower mold holders 15 are provided with a transfer connection pattern forming section 30 and a product molding section 50, which will be described later.

As shown in Fig. 3, the plate material supply device 20 includes a plate material take-up roll 21 in which a plate material of a predetermined length is wound in a roll form, And a material supply roll 23 provided adjacently so as to supply the plate material wound on the plate material take-up roll 21 to the press body 10 by a predetermined pitch.

The plate material supply device 20 is a plate material material supply device in which the plate material take-up roll 21 is disposed in a direction orthogonal to the longitudinal direction of the press body 10, And the plate material is fed to the one side in the width direction of the press machine at predetermined pitches by the rotational drive of the rolls 23. [ At this time, at least one of the sheet material take-up roll 21 and the material supply roll 23 can be rotated at a predetermined rotational pitch corresponding to the sheet material supply pitch by the unillustrated stepping motor to supply the sheet material.

The transfer connection pattern forming section 30 includes a transfer connection pattern forming mold 31 for forming a transfer pattern 5 and a connection pattern 7 on a plate material supplied from a plate material supply region of the press main body 10, And a cut connecting mold 33 for cutting the material in the width direction in accordance with a predetermined size and connecting the same to the preceding plate material.

The transfer connection pattern forming mold 31 is composed of an upper mold and a lower mold having a punch (not shown) and a die (not shown) corresponding to the transfer pattern 5 and the connection pattern 7, In at least one widthwise upper and lower mold holder 15 of the press body 10 in the plate material supply area of the press body 10. [ The transfer pattern forming die 31 forms a transfer pattern 5 in the width direction on the plate surface of the plate material supplied to the press main body 10 and forms a connection pattern 7 at both ends in the width direction of the plate material to be supplied .

Here, the transfer pattern 5 is a forming pattern for allowing the plate material to be smoothly conveyed to the product forming section 50 by the plate material conveying device 40, which will be described later, along the width direction of the plate material to be fed And can be formed in a concavo-convex shape or a hole shape at predetermined intervals. The transfer pattern 5 is removed from the final discharge area of the product forming part 50 by cutting or the like. As shown in the enlarged view of FIG. 4A, the connecting patterns 7 are formed in both male and female shapes at both ends in the width direction of the supplied plate material.

The cutting connecting mold 33 is provided with a punch (not shown) for cutting the plate material in which the conveying pattern 5 and the connecting pattern 7 are formed in the conveying connection pattern forming die 31 in the width direction in accordance with a predetermined size, (Not shown) and an upper mold. The cutting connecting mold 33 is positioned at the center of the press body 10 in the plate material supply region of the press body 10 so that the distance between the molding dies of the product molding section 50 and the length of the press body 10 Direction.

At this time, the plate material plate surface in the uncut state located on the die (not shown) of the cutting connecting die 33 is located higher than the plate surface of the plate material cut in the cutting connecting die 33, When the upper and lower mold holders 15 of the forming mold 50 contact the upper and lower mold holders 15 and cut the plate material from the cut connecting mold 33, the plate surface of the cut plate material is cut into a die ) Is located on the same plane as the plate material located on the upper side.

Here, the height difference between the plate material before cutting and the plate material after cutting is determined such that the upward inclination height of the supply material lift 35, which is elastically upwardly biased to the die (not shown) of the transfer connection pattern forming die 31, Is formed so as to be positioned higher than the upward urging height of the conveying material lift 37 which is elastically upwardly urged to be urged upward in a die (not shown) of the forming die forming mold 51 of the forming part 50, And the height difference of the plate material after cutting is such that the plate material is cut and connected to the previously cut plate material by the connection pattern 7.

The plate material conveying device 40 is for conveying the plate material cut from the cut connecting mold 33 to the product forming section 50 and is provided between the conveying connection pattern forming section 30 and the product forming section 50 And is reciprocally movable in a predetermined interval. The plate material transferring device 40 engages with the transfer pattern 5 to transfer the plate material to the product forming part 50 at predetermined pitches while grasping and holding the plate material.

The product forming section 50 is formed by molding pattern forming dies 51 coupled to the upper and lower mold holders 15 along the longitudinal direction of the press body 10 from the area adjacent to the transfer connecting pattern forming section 30 . The forming pattern forming mold 51 is constituted by an upper mold and a lower mold having a punch (not shown) and a die (not shown) corresponding to a forming pattern to be formed on a plate surface of a plate material, like a general press mold.

On the other hand, the control unit (not shown) selects a molding program for each molding product model inputted in advance and drives the plate material supply pitch of the plate material supply device 20 so that a molded product corresponding to the selected molding program can be produced. (Not shown) of the transfer connecting pattern forming die 31 and driving of the punch (not shown) of the cutting connecting mold 33 and the driving of the plate material transferring device 40, (Not shown) of the mold-forming metal mold 51 is controlled.

The press forming process of the continuous press machine 1 of the 690 patent will be described.

The plate material wound on the plate material winding roll 21 by the driving of the plate material supply device 20 is moved from the widthwise side of the press body 10 to the conveyed connection pattern forming portion 30, . At this time, the supply interval pitch of the plate material can be controlled by controlling the driving of the plate material supply device 20 so that the controller (not shown) corresponds to the selected forming program.

As shown in FIGS. 4A and 4B, the plate material supplied to the transfer link pattern forming section 30 is formed by the punching action of the transfer link pattern forming die 31, and the transfer pattern 5 is formed in the width direction of the plate material The transfer pattern 5 is formed on the plate material surface of the region corresponding to both outer side regions of the forming pattern to be formed on the plate material in the product forming section 50.

The connecting pattern of an engaging structure that is mutually shaped is formed in both widthwise end regions of the plate material fed by the punching action of the feeding and connecting pattern forming die 31, that is, both end portions of the plate material between the two feeding patterns 5 7 are formed.

After the transfer pattern 5 and the connection pattern 7 are formed in the transfer connection pattern forming mold 31 and then the upper ram 11 of the press body 10 is separated from the lower base 13, Similarly, the plate material supply device 20 moves the plate material to the cutting connecting mold 33 side by the supply pitch.

The area of the plate material in which the transfer pattern 5 and the connection pattern 7 are formed is located in the upper region of the die of the cutting connecting mold 33, And a new area is supplied to the upper region of the die (not shown) of the transfer connection pattern forming mold 31. [

When the upper ram 11 of the press main body 10 descends in contact with the lower base 13 as shown in Figs. 5C and 5D in this state, as described above, in the transfer connection pattern forming mold 31, The transfer pattern 5 and the connection pattern 7 are formed in the new area and the plate material in which the transfer pattern 5 and the connection pattern 7 are formed in the cutting connection mold 33 is formed as shown in FIGS. And is cut so as to be transported to the product forming section 50.

At this time, the plate material plate surface in the uncut state located on the die (not shown) of the transfer connection pattern forming die 31 is positioned higher than the plate surface of the plate material cut in the cut connecting mold 33. Here, the plate surface of the cut plate material is positioned on the same plane as the plate surface of the conveyed plate material located in the forming pattern forming die 51 to be described later.

The plate material cut in the cutting connecting mold 33 is pressed against the lower base 13 of the press body 10 by the driving of the plate material transfer device 40, The mold 51 is moved to the upper portion of the mold (not shown). The plate material region in which the transfer pattern 5 and the connection pattern 7 are formed in the transfer connection pattern forming die 31 is moved to the cutting connection mold 33 and transferred to the transfer connection pattern forming die 31, The plate material of the new area is supplied again.

4A and 4B, the plate material conveyed to the forming pattern forming metal mold 51 has a difference in height from the one end of the front plate material located in the cutting connecting metal mold 33 at the rear end in the conveying direction And are located on the same line.

When the upper ram 11 of the press body 10 is again lowered in contact with the lower base 13 as shown in Figs. 5A to 5D in this state, the plate material, which is located in the transfer connection pattern forming die 31, The transfer pattern 5 and the connection pattern 7 are formed, and the plate material placed on the cutting connecting mold 33 is cut.

6A and 6B, the connection pattern 7 at one end of the plate material cut at the cutting connecting mold 33 is connected to the connection pattern 7 at the rear end of the plate material located at the adjacent formation pattern forming metal mold 51 To be mutually shaped.

When the upper ram 11 of the press main body 10 is separated from the lower base 13, the plate material transfer device 40 transfers the leading plate material located in the forming pattern forming die 51, And the plate material connected to the rear end of the preceding plate material is fed to the forming pattern forming die 51 as shown in Figs. 4A and 4B. The plate material to be fed to the forming pattern forming die 51 is subjected to a punching action in the forming pattern forming die 51 of the conveyed area in the same manner as the ordinary continuous press machine 1 to form the corresponding forming pattern.

On the other hand, the plate material region where the transfer pattern 5 and the connection pattern 7 are formed in the transfer connection pattern forming die 31 is moved to the cutting connection mold 33 and transferred to the transfer connection pattern forming die 31, The plate material of the new area is supplied again.

The plate material to be fed to the side surface of the press body 10 by the repetition of this process is cut in the widthwise direction by the feed pattern 30 and the cut plate material is fed to the leading plate material and the connecting pattern 7 And is continuously supplied to the forming pattern forming portion.

Thus, the plate material wound on the plate material take-up roll 21 is fed in the longitudinal direction, and the widthwise direction is changed in the conveying connection pattern forming section 30 in the longitudinal direction and transferred to the product forming section 50, .

This is because the plate material wound around the plate material take-up roll 21 generates a relatively large bending stress in the longitudinal direction in the take-up direction, while a bending stress is almost generated in the width direction in the state of being wound around the plate material take- , It means that the plate material can be continuously supplied to the product forming section 50 without changing the performance characteristics due to the bending stress.

Therefore, when the molded product produced by the continuous press machine 1 is a molded article highly sensitive to the performance characteristics of the material, the continuous press machine 1 according to the present invention produces a molded product while maintaining the performance characteristics of the plate material .

On the other hand, the continuous press machine 1 according to the '690 patent can provide a pair of plate material supply devices 20 on both sides in the width direction of the press body 10, as shown in FIG. This allows the supply of plate material to be selectively performed when producing different molded products using different plate materials, which provides the convenience of improving the production line of press-formed products and supplying different plate materials.

As shown in FIG. 8, the plate material supply device 20 is provided in the width direction of the press body 10, and the plate material supply device 20 is provided adjacent to the press body 10 A plate material supply device 20 for supplying the plate material in the longitudinal direction to one side of the press body 10 in the longitudinal direction may be further included.

Thus, in the continuous press machine according to the '690 patent, in a state in which the supply direction of the plate material is fed to the side surface of the press body in the longitudinal direction wound on the plate material take-up roll, the width direction is changed in the longitudinal direction, , It is possible to press-mold a product on a plate material in an area where almost no bending stress is generated in the wound state. Therefore, there is an advantage that the product can be press-molded while maintaining the performance characteristics of the plate material.

In particular, there is an advantage that a molded product that is highly sensitive to the performance characteristics of the plate material can be produced smoothly by press molding the product in a state in which the performance characteristics of the plate material do not change.

In addition, by providing the plate material supply device in both widthwise and lengthwise directions of the press body, it is possible to selectively produce other kinds of molded products by using plate materials having different thicknesses, sizes and materials.

The above-mentioned 690 patent obviously has the above advantages, but there are some problems in specific driving.

The first problem is the error between the connecting patterns 7 formed on the plate material.

Since the connecting pattern 7 is formed before and after the cut portion cut by the cutting connecting metal mold 33 in the next step in forming the connecting pattern 7 at both side ends of the plate material, There is a problem that an error occurs in the width direction.

The second problem is an error between the upper and lower transfer patterns 7 in the unit plate material to be cut.

The transfer pattern formed on the plate material shows that the transfer pattern is simultaneously formed on the upper portion of the first unit plate material and the lower portion of the next unit plate material. In this case, when fine movement is generated in the width direction when the plate material is taken out, such a widthwise movement causes an error between the upper and lower transfer patterns of the unit plate material.

The third problem is that the connection pattern between the plate material cut while cutting the plate material by the cutting connecting metal mold 33 and the plate material previously cut and conveyed to the right is connected to each other by abrading each other. There is a problem in that a pitch error of the transfer pattern formed at the connection site is generated due to the pulling-in of the connecting portion by the stamping.

As a fourth problem, fine powder is generated in the process of depressing the above-mentioned connection pattern, and the fine powder is buried in the lower surface of the plate material. In the continuous press forming process after the transfer, the fine powder is press- There is a problem of causing defects in the finished product when it is located at a target point.

The fifth problem is that the plate material cut by the cutting die for connection is transferred to the continuous press forming process to cause mutual friction between the plate material and the cut surfaces during cutting to generate fine powder, There is a problem that when the fine powder is placed in the molding target point in the continuous press forming process after the transfer, defects of the finished product are caused.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a continuous press for preventing fine powder from occurring due to friction occurring in relation to a plate material being cut during the cutting process, And to provide a processing method.

According to an aspect of the present invention, there is provided a continuous press according to the present invention, which comprises: a plate-like plate material which is drawn and cut in a unit of a predetermined length and which is connected to both ends in the width direction of the cut plate material, A plate material withdrawing portion including a material supplying device for supplying the plate material wound in a roll shape at a predetermined interval; A connection pattern forming die provided at both ends of the plate material in the width direction and forming a connection pattern connecting the plate materials; And a cutting connecting mold for cutting the plate material having the connecting pattern formed therein to a predetermined length, wherein the cutting connecting metal cuts the plate material, And cutting the plate material while inclining the end portion upward by a predetermined angle? On the plane of the plate material.

Also, the plate material is characterized in that, when the connecting patterns are mutually connected, the upper or lower end of the connecting pattern is not completely connected by a length proportional to the tangent of?.

In the meantime, when the plate material is fed, a space is formed between the plate material in the standby state for cutting and the plate material to be fed, so that no friction occurs between the plate material and the plate material, and the width of the spacing distance is .

A method of processing a plate material according to an embodiment of the present invention is a method of drawing and cutting a plate material of a roll shape by a predetermined length unit and connecting both ends of the cut plate material in the width direction to the product molding section A plate material drawing step of drawing the plate material of the roll shape at a predetermined interval; A connection pattern forming step of forming connection patterns at both ends in the width direction of the plate material so as to connect the plate material in the width direction; And a plate material cutting step of cutting the plate material to a predetermined length; Wherein cutting the plate material comprises cutting the plate material in a state that the end in the feed direction is inclined upward by a predetermined angle? On the plane of the plate material with reference to the horizontal feed direction after cutting the plate material And cutting the plate material.

And a plate material connecting step in which the connecting patterns of the plate material are mutually connected, wherein the upper or lower end of the connecting pattern is not completely connected by a length proportional to the tangent of? do.

The apparatus may further include a transfer step of transferring the connected plate material to the product forming unit. In the transfer step, a space is formed between the plate material waiting to be cut and the plate material to be transferred, And the width of the spacing space is (transfer distance) * (tan?).

The present invention can fundamentally prevent friction with a plate material in a cutting standby state in a process of transferring a cut plate material by cutting the plate material at a predetermined angle. Therefore, it is possible to significantly reduce the defective rate of the final molded product by preventing the fine powder generated by the friction between the plate materials.

1 is a schematic structural view of a continuous press according to the prior art;
FIGS. 2A, 2B and 2C are a plan view and a side view showing a schematic configuration of a continuous press according to the prior art;
Fig. 3 is a schematic enlarged perspective view of the plate material supply region of Fig. 2; Fig.
Figs. 4A and 4B, Figs. 5A to 5D, Figs. 6A and 6B are a plan view and a side view for explaining the plate material supply process of the continuous press machine according to the termination technique.
7 is a schematic plan view of a continuous press according to another embodiment of the prior art;
8 is a schematic plan view of a continuous press according to another embodiment of the prior art;
9 is a plan view showing a connection pattern forming die according to a related art.
10A to 10E are plan views showing a connection pattern forming die according to the present invention
11 to 12 are plan views showing a transfer pattern forming metal mold and a connection pattern forming metal mold according to the present invention
13 is an enlarged view of a connection pattern forming die according to the present invention.
FIGS. 14 and 15 are conceptual diagrams showing a cutting step and a feeding step according to the present invention; FIG.
16 and 17 are conceptual diagrams showing a coupling relationship of a connection pattern according to the present invention;
18 is a flowchart showing a method of processing a plate material according to the present invention.

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

The present invention is an improved version of the continuous press according to the prior art ('690 patent') by the applicant and will be described in detail, focusing on improvements from the '690 patent'.

10A to 10E are conceptual diagrams illustrating a connection pattern forming process according to an embodiment of the present invention. For comparison with the prior art, FIG. 9 of the prior art will be briefly described.

9 is a plan view of a continuous press according to the prior art. As shown in FIG. 9, the transfer pattern forming mold 31 shown in FIGS. 1 to 8 may be more specifically divided into a connection pattern forming mold 32 and a transfer pattern forming mold 34.

9, when forming the connection pattern 5 in the connection pattern forming die 32, the connection pattern 5 is formed in a state including the cutting line divided and divided in the cutting connection die 33 Respectively. Accordingly, the individual unit plate materials to be cut must pass through a total of two connection pattern formation steps in half.

In this process, unless the sheet material extraction amount is very precise, an error necessarily occurs. These errors not only make the plate materials difficult to connect to each other but also cause a pitch error of the connecting portion, and in some cases fine powder is generated in the error portion at the time of connection.

Especially when very precise machining is required, such as an inner strap supporting a fuel rod, the micro-errors result in fatal defects in the final produced inner strap.

10A to 10E correspond to a plan view of a continuous press according to the present invention which solves such problems.

9A to 9E, a continuous press according to an embodiment of the present invention includes a connection pattern 5 for connection between plate materials to be cut, at both ends in the width direction of the plate material drawn out from the plate material winding portion Forming mold 32 for forming a connection pattern. The connection pattern forming metal mold 32 is integrally formed as a unit of plate material cut in the cut connecting mold 33 to prevent an error of the connection pattern 5 in connecting the plate materials after cutting. It is preferable to form the pattern 5.

More specifically, the connection pattern forming metal mold 32 is positioned between the upper and lower cut lines of the plate material, and the connection pattern 5 independent of the individual unit plate material in a state of not overlapping the cut line . That is, in the case of the prior art shown in FIG. 9, the lower connection pattern of the unit plate material is formed in the first connection pattern formation step by using the total of two connection pattern formation steps in the unit plate material, The upper connection pattern and the lower connection pattern of the present invention are formed in a single connection pattern formation process, so that the connection patterns 5 are combined Thereby preventing an error that occurs.

11 is an enlarged view showing a transfer pattern forming die 34 and a connection pattern forming die 32 according to an embodiment of the present invention.

Hereinafter, the transfer pattern forming mold 34 will be described first.

Referring to FIG. 9, it can be seen that the transfer pattern forming die 34 according to the prior art forms the upper and lower transfer patterns 7 between the cutting lines before the connection pattern forming step. That is, when the transfer pattern 7 formed on the plate material is examined, it can be seen that the transfer pattern 7 is simultaneously formed on the upper portion of the first unit plate material and the lower portion of the next unit plate material.

In this case, since each unit plate material undergoes a transfer pattern forming process two times in the up and down direction, when a minute movement is generated during drawing of the plate material between the formation of the next transfer pattern 7 after the first transfer pattern 7 is formed, An error between the upper and lower transfer patterns 7 of the unit plate material in the cut state is generated.

The continuous press according to an embodiment of the present invention basically includes a transfer pattern connecting mold for forming a plurality of transfer patterns 7 at regular intervals in the width direction at the upper and lower ends of the cut plate material. The transfer pattern 7 means a hole for providing a reference for allowing the continuous press device to be transported at a constant interval after the plate material is cut. The transfer pattern 7 is formed at intervals corresponding to the distances between the respective sub-pressing processes of the continuous press process. And the detailed process of the continuous press process is performed one step at a time.

The transfer pattern forming die 34 may be formed of various hole forming means such as a press die or a drill capable of forming holes.

The transfer pattern forming die 34 may be formed at the same position as the connection pattern forming die 32, as shown in FIG. Here, the same position means that the transfer pattern forming die 34 is positioned at the upper and lower ends of the unit plate material in a state where the connection pattern forming metal mold 32 is positioned on both side surfaces of the plate material, . As a result, the transfer pattern 7 can be formed on the upper and lower transfer patterns 7 at one time on the basis of each unit plate material, and can be transferred to the next transfer pattern formation after the first transfer pattern is formed It is possible to prevent an error of the upper and lower transfer patterns.

The connection pattern forming metal mold 32 and the transfer pattern forming metal mold 34 may preferably simultaneously form a state connecting pattern and a transfer pattern 7 in which relative positions are mutually fixed. Thereby, it is possible to prevent an error of a relative position that may be generated between the connection pattern 5 and the transfer pattern 7 in advance.

Meanwhile, as described above, FIG. 11 shows a connection pattern forming die 32 according to an embodiment of the present invention. 12 shows a connection state of the plate material according to the connection pattern forming metal mold 32 according to an embodiment of the present invention. FIG. 13 is a front view, a plan view, and a side view showing a concrete shape of the connection pattern forming metal mold 32, Fig.

In connecting the connection patterns 5, a pressing process is required to connect the connection patterns 5 formed at the end portions of the plate material.

In this stamping process, in the stamping process, fine powder is generated at the connection site due to friction in interconnecting the connection patterns (5). Such fine powder is buried in the lower surface of the plate material to be conveyed, and when the fine powder is placed in the plate material at the point of press molding in the continuous press forming process after the transfer, there is a problem that the finished product is defective.

In order to solve this problem, the connection pattern forming metal mold 32 according to an embodiment of the present invention includes an upper metal mold 32a, a middle metal mold 32b, and a lower metal mold 32c, The intermediate mold 32b is formed so as to protrude inwardly of the plate material as compared with the upper mold 32a and the lower mold 32c and consequently the plate material corresponding to the intermediate mold 32b, It is preferable that the connection pattern of the plate material is not engaged when connecting the plate material.

That is, as shown in FIG. 11, the intermediate mold 32b protrudes inwardly of the plate material compared to the upper mold and the lower mold. As a result, the intermediate pattern 32b, which is recessed in the connecting pattern 5 of the plate material, (5b).

As shown in Fig. 12, the intermediate part pattern 5b forms the intermediate void part 3b at the connection part of the plate material, thereby suppressing the generation of fine powder at least in the intermediate void part 3b.

In the continuous press machine, the upper and lower portions of the plate material form a transfer pattern 7 for transfer to a product molding section, which is cut off after molding and removed. Therefore, even if fine powder is generated in the upper part and the lower part, the possibility of affecting the quality of the final molded product is very low.

On the other hand, the middle portion of the plate material in which the intermediate void portion 3b is located corresponds to a portion where continuous press forming is performed and the final finished product is produced, so that when fine powder is formed at this portion, the final product is seriously affected.

Therefore, as described above, provision of the intermediate mold 32b to protrude inwardly of the plate material has the advantage of significantly reducing the defects of the final molded product.

The connection pattern forming die 32 according to an embodiment of the present invention may further include a side guide portion 32d as shown in FIG. The side surface guide portion 32d forms a wall surface projecting on the upper edge of the connection pattern forming metal mold 32 so as to be parallel to the direction of conveyance of the plate material so as to reduce the movement in the width direction when the plate material is drawn out do. The movement of the plate material in the width direction during the drawing process of the plate material, in particular, prevents an error due to the movement of the plate material in the width direction during the process of forming the connection pattern 5 and the transfer pattern 7.

Figs. 14 and 15 correspond to plan views showing cutting angles of the plate material cut in the cutting connecting mold.

In the prior art, when the plate material is cut and transported, the plate material is accurately cut in the horizontal direction, and as the plate material is transported in the horizontal direction, friction occurs between the already-cut plate material and the plate material waiting to be cut . More specifically, the lower portion of the plate material waiting to be cut and the upper portion of the already cut plate material are rubbed against each other, and unnecessary fine powder is generated according to such friction.

In order to solve this problem, as shown in FIGS. 14 and 15, in cutting the plate material in the cutting connecting metal mold 33, the plate material is moved in the direction opposite to the feeding direction It is preferable that the end portion is fixed as it is, and the end portion in the transport direction is inclined by a predetermined angle?.

In this case, as shown in FIG. 15, as the plate material is fed, the spacing space L is formed. As a result, friction between the plate material and the plate material in the cutting standby state can be prevented. Meanwhile, FIG. 14 is exaggerated in somewhat exaggerated form in order to facilitate explanation, and a very fine angle can be formed and sufficiently implemented. Specifically, the width of the spacing space corresponds to (transfer distance) * (tan?).

As shown in FIGS. 14 and 15, the plate material connected by the connection pattern 5 is formed with irregular lines bent at the upper and lower planes of the connection portion. That is, the upper or lower end of the connection pattern 5 is not completely connected by a length proportional to the? Tangent value. This part will be cut off and discarded in the future, so it will not affect the final molded product.

16 to 17 correspond to excerpts showing connection relationships of the connection pattern 5 according to an embodiment of the present invention.

The plate material cut in the cutting connection mold is connected to both ends of the plate material through the connection pattern 5 and is conveyed to the product forming section 50. In connecting the connecting patterns 5, the right connecting pattern 5 of the plate material is placed on the left side of the left connecting pattern 5 of the plate material previously cut and transported to the right, .

In the prior art, the formation position of the connection pattern 5 is formed to correspond to half of the pitch distance in consideration of the distance between each pitch. However, due to the fine elongation as described above, there is a problem that the pitch distance of the connected portion is increased compared to other pitch distances.

In order to solve this problem, as shown in FIGS. 16 and 17, the sum of distances between the both side ends of the connection pattern 5 formed at the both ends and the transfer pattern closest to the both side ends, It is preferable that the distance between the adjacent transfer patterns other than the adjacent transfer pattern is formed to be shorter than the distance between the adjacent transfer patterns so as to cancel out the elongation of the connection portion generated at the time of mutual connection of the connection patterns 5 in advance.

That is, as shown in FIG. 16, the sum of x and y before connection is made smaller than P, which is the pitch distance. As a result, the connecting portion is enlarged in the process of indenting. As a result, So that the sum becomes equal to the pitch distance P.

In the foregoing, the continuous press machine according to an embodiment of the present invention has been described focusing on its constituent features.

Hereinafter, the present invention will be described in terms of steps of a plate material processing method.

FIG. 18 is a flowchart showing respective steps of a method of processing a plate material in a continuous press apparatus according to an embodiment of the present invention.

18, a plate material processing method according to an embodiment of the present invention includes i) a plate material withdrawing step, ii) a connection pattern forming step, iii) a transfer pattern forming step, iv) a plate material cutting step, v ) Connection pattern connection step, and v) transfer step.

The step of taking out the plate material corresponds to a step of taking out the plate material of the roll form at a predetermined interval and providing the same to the plate material processing apparatus.

The connection pattern forming step corresponds to a step of forming connection patterns connecting the widthwise sides of the plate material with each other in the width direction of the plate material.

The transfer pattern forming step corresponds to a step of forming a transfer pattern for transferring the plate material to the upper and lower portions of the plate material.

The step of cutting the plate material corresponds to a step of cutting the plate material having the transfer pattern and the connection pattern to a predetermined length.

The connection pattern connecting step corresponds to connecting the connection pattern formed at one end of the cut plate material to the connection pattern formed at the other end of the plate material cut in advance.

The conveying step corresponds to a step of conveying the connected plate material to the product forming unit 50 using the conveying unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the plate material processing method of the present invention basically draws and cuts a plate material of a roll type in a predetermined length unit, connects both ends in the width direction of the cut plate material to each other and supplies them to the product molding section, A plate material drawing step of drawing the plate material at a predetermined interval; A connection pattern forming step of forming connection patterns at both ends in the width direction of the plate material so as to connect the plate material in the width direction; And a plate material cutting step of cutting the plate material to a predetermined length.

In the connecting pattern forming step according to an embodiment of the present invention, in order to prevent an error of a connecting pattern in connecting the plate materials cut in the plate material cutting step, It is preferable that the connection pattern is integrally formed by the unit of the predetermined length of the connection pattern.

The transfer pattern forming step and the connecting pattern forming step may further include a transfer pattern forming step of forming a transfer pattern in the width direction at the upper end and the lower end of the cut plate material, So that the molds are mutually fixed.

The connection pattern forming step and the transfer pattern forming step may include forming a connection pattern and a transfer pattern, wherein the transfer pattern is formed of a number of pitch holes formed at regular intervals, and both side ends of the connection pattern, And the distance of the pitch holes contacting each other in the pitch hole is shorter than the distance of the constant pitch of the pitch hole to cancel the elongation of the connection portion generated when the connection patterns are interconnected.

According to another aspect of the present invention, there is provided a method of forming a connection pattern, the method comprising: forming a connection pattern forming die for forming the connection pattern on both end portions of the plate material, Wherein the intermediate mold is divided into an upper mold, a middle mold, and a lower mold, and the intermediate mold is protruded to the inside of the plate material as compared with the upper mold and the intermediate mold, .

Here, the intermediate part pattern forms an intermediate void part which is not mutually connected to the mutually facing part of the intermediate part pattern when the cut plate materials are mutually connected.

The connection pattern forming step may include a side surface guide portion having a wall surface protruding from the upper surface so as to be parallel to the drawing direction of the plate material on the upper surface edge of the connection pattern forming metal mold, .

According to another aspect of the present invention, there is provided a method of cutting a plate material, the method comprising cutting a plate material, cutting the plate material, It is preferable to cut the plate material in a state in which the plate material is inclined upward.

The plate material connecting step may further include a plate material connecting step in which the connecting patterns of the plate material are mutually connected. The upper or lower end of the connecting pattern is not completely connected by a length proportional to the tangent of?.

In addition, the method may further include transferring the connected plate material to a product forming unit, wherein a space is formed between the plate material being waiting for cutting in the transfer step and the plate material to be transferred, . Specifically, the width of the spacing space is specified by (transfer distance) * (tan?).

1: continuous press
3: plate material
3a: Upper connection
3b:
3c: Lower connection
5: Connection pattern
5a: upper pattern
5b: intermediate pattern
5c: Lower pattern
7: Feed pattern
10: Press body
11: upper ram
13: Lower base
20: plate material supply device
21: Plate material winding roll
23: Material supply roll
30: conveying connection pattern forming part
31: Mold for forming a transfer connection pattern
32: Connection pattern forming mold
32a: upper mold
32b: intermediate mold
32c: Lower mold
33: Cutting connection mold
34: Transfer pattern forming mold
35: Supply material lift
37: Feed material lift
40: Sheet material conveying device
50: product molding section
51: forming pattern forming mold

Claims (8)

And a plate material supply device for drawing and cutting the plate material in a roll unit in a predetermined length unit and connecting both ends of the plate material in the width direction to each other and supplying the cut material to the product forming unit,
A plate material withdrawing portion for supplying the plate material wound in a roll shape at a predetermined interval;
A connection pattern forming die provided at both ends of the plate material in the width direction and forming a connection pattern connecting the plate materials; And
And a cutting connection mold for cutting the plate material having the connection pattern formed therein to a predetermined length,
The cutting connecting metal mold,
In cutting the plate material,
Wherein the plate material is cut in a state in which the end in the conveying direction is inclined upward by a predetermined angle? On the plane of the plate material with reference to the horizontal conveying direction after the plate material is cut.
The method according to claim 1,
In the plate material, when the connection patterns are mutually connected,
And an upper or lower end of the connection pattern is not completely connected by a length proportional to the tangent of?.
The method according to claim 1,
In transferring the plate material,
Wherein a spacing space is formed between the plate material waiting to be cut and the plate material being fed so that friction between the plate material and the plate material is not generated.
The method of claim 3,
And the width of the spacing space is (traverse distance) * (tan?).
A continuous press machine plate material processing method for drawing and cutting a roll material in a predetermined length unit and connecting both ends of the cut material in the width direction to each other to supply the product to a product forming section,
A plate material drawing step of drawing the plate material of the roll shape at a predetermined interval;
A connection pattern forming step of forming connection patterns at both ends in the width direction of the plate material so as to connect the plate material in the width direction; And
A plate material cutting step of cutting the plate material to a predetermined length;
/ RTI >
In the plate material cutting step,
In cutting the plate material,
Wherein the plate material is cut in a state in which the end in the conveying direction is inclined upward by a predetermined angle? On the plane of the plate material with reference to the horizontal conveying direction after the plate material is cut.
6. The method of claim 5,
And a plate material connecting step in which the connection patterns of the plate material are mutually connected,
Wherein an upper or lower end of the connection pattern is not completely connected by a length proportional to a tangent value of the < RTI ID = 0.0 >#.≪ / RTI >
The method according to claim 6,
And a transfer step of transferring the connected plate material to a product molding section,
In the transfer step,
Wherein a spacing space is formed between a plate material in a waiting state for cutting and a plate material to be fed so that friction between the plate material and the plate material is not generated.
8. The method of claim 7,
Wherein the width of the spacing space is (transfer distance) * (tan?).

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