KR100919630B1 - Die-plate for fixing a mold on press machine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press apparatus, and more particularly, to a die plate having a rectangular parallelepiped shape for fixing a mold having a molding hole having a predetermined cross-sectional shape corresponding to the shape of a product to be manufactured to the press apparatus. It is provided with a product return container access rail passing through the center part in the transverse direction, and a product discharge through window penetrating vertically from the upper center part toward the product return container access rail. One or more clamping means guide rails on each side having an open 'reverse T' cross-section, for holding clamps placed on top of the mold, which are pre-fixed by clamping means on the bolster of the press apparatus. A mold characterized in that it can be fixed by at least one clamping means guided to the rail By providing a die plate for fixing the device less, and to achieve an effect that enables the mold very quickly and easily set in place.

Description

DIE PLATE FOR FIXING A MOLD ON PRESS MACHINE

The present invention relates to a press apparatus, and more particularly, to a die plate used for fixing a mold on a bolster of a press apparatus in order to perform a blanking operation or the like.

In general, the press apparatus can be divided into mechanical and hydraulic, depending on the way to provide a large force.

1 is a perspective view showing an example of a general press apparatus.

As shown in FIG. 1, the press apparatus 1 is generally supplied to an upper portion of the bolster with a fixed lower bolster 10 serving as a work support, and ascending and descending at a predetermined stroke periodically from the upper portion of the bolster. A slide 20 is provided for working on the material.

Such a press apparatus is used for sheet metal processing to form a planar material such as an iron plate to be supplied into a required three-dimensional shape, trimming to cut out unnecessary portions remaining at the edges of the material formed in a previous machining process, and holes in the material to be supplied. It is used in a variety of molding processes that require a large force, such as punching, which produces a mold, and blanking, similar to punching, which extracts a specific shape of a product from a material to be supplied. Inevitably, a tool component such as a mold formed in a shape corresponding to the shape of the product to be manufactured is used in the molding process using the press apparatus.

2 is a perspective view showing an example of a press apparatus set to perform blanking processing.

As a specific example, as shown in FIG. 2, in order to perform blanking, a mold 30 having a molding hole 25 having a cross-sectional shape corresponding to the shape of a product to be produced is placed on the bolster 10 side. It is fixed and the punch 40 of the cross-sectional shape corresponding to the shaping | molding hole 25 formed in the metal mold | die 30 is fixed to the slide 20 side. In the blanking process, the punch 40 fixed to the slide 20 in the process of moving the slide 20 in the vertical direction Y while the raw materials are transferred in the transverse direction X at a predetermined speed from the upper part of the mold. ) Corresponds to the cross-sectional shape of the forming hole 25 and the punch 40 by the shear stress in the process of descending below the upper side entrance of the corresponding forming hole 25 formed in the mold 30. It's done by picking the product. Depending on the number of forming holes 25 formed in the mold 30 and the number of corresponding punches 40 fixed to the slide 30, the number of products produced in one slide stroke can be determined, together with the press The working speed may be determined by the number of strokes inherent in the device.

According to a specific example according to the prior art, as shown in Figure 2, the product generated by the shear force acting as the punch 40 is lowered during the blanking process is formed inside the molding hole 25 formed in the mold 30 Falling from the mold 30 is discharged to the lower portion, and thus the product recovery container 50 for collecting and collecting the discharged product is located under the mold (30). In more detail, as a space for the product collection container 50 to enter and exit between the mold 30 and the bolster 10 is absolutely necessary, the mold 30 is not directly fixed on the bolster 10. In order to secure a space for the product collection container 50 to enter and exit, a separate tool that is located between the mold 30 and the bolster 10 is fixed through the die block 60.

As an example according to the related art, as shown in FIG. 2, a mold 30 used for blanking or the like is fixed on the bolster 10 via a pair of die-blocks 60. do. Specifically, a pair of die blocks (60) having a predetermined height on the bolster 10 in parallel with the conveying direction (X) of the raw material and arranged to maintain a predetermined distance from each other, a pair of die blocks ( After the mold 30 is properly disposed on 60, the mold 30 is firmly fixed using one or more clamping means 70. At this time, the product collection container 50 can enter and exit the space 65 formed between the pair of die blocks 60 arranged side by side in the horizontal direction. On the other hand, the die block 60 does not directly provide a fixing force for fixing the mold, only serves as a spacer to secure the space 65, the fixing force for fixing the mold 30 is clamping Provided by means 70. Here, the clamping means 70, the one end of the lower end side is restrained on the guide rail 15 of the 'reverse T-shaped' cross section provided in the bolster 10, the other end is on the die block 60 The mold 30 is firmly fixed in such a manner as to press the upper surface of the mold 30 to be laid down from the top.

However, in the blanking process as described above, the alignment of the molding holes 25 formed in the punch 40 and the mold 30 is important, and the alignment of the punch 40 and the molding holes 25 is important. Given that it is determined in the process of fixing the mold 30 on the bolster 10, the mold fixing structure according to the prior art can be very inconvenient. In detail, when the die block 60 on which the mold 30 is placed is moved even a little while the mold 30 is set in the correct position, it is difficult to maintain the exact position, and even in the fixing process through the clamping means 70. There are several difficulties in achieving precise alignment such as the mold 30 can be easily moved by movement. In addition, the up and down size of the clamping means 70 is inevitably large due to the height of the die block 60, this is due to the considerable weight of the clamping means 70 is not easy to handle by the operator to set the mold It can also make your work difficult. Therefore, the mold setting operation requires a high skill of the operator, nevertheless it takes a lot of time on average, and the die block 60 and the considerable self-weighting clamping means 70 that are not firmly fixed to the bolster 10 As a result of the use of the present invention, there are various direct problems, such as a decrease in stability due to high center of gravity and inability to handle.

In addition, as the time required for the setting operation is considerable, the fatigue of the operator is increased, and there is also a derivative problem that the productivity is lowered.

As invented to solve the problems of the prior art as described above,

The present invention is firmly fixed before the mold setting operation is carried out on the bolster of the press device, so that even if the operator's skill is somewhat reduced, it is possible to easily set the mold in place while ensuring the stability of the operation, It is an object of the present invention to provide a die plate for fixing a mold to a press apparatus that can significantly shorten the time required, thereby contributing to improved productivity.

The present invention for achieving the above object,

A die plate having a rectangular parallelepiped shape for fixing a mold having a molding hole having a predetermined cross-sectional shape corresponding to the shape of a product to be manufactured to a press apparatus,

It has a product recovery container entry rail passing through the central portion of the lower side in the transverse direction, and has a product discharge through window vertically penetrating toward the product recovery container entry rail from the upper central portion, One or more clamping means guide rails for each face having a 'reverse T' cross-section open to each face,

Fixing the mold to the press apparatus, wherein the mold placed on the upper portion of the press apparatus is fixed to the press apparatus by means of at least one clamping means guided to the rail for the clamping means guide. It provides a die plate for.

And, respectively, coupled to the left and right symmetrical position in the transverse direction of the rear side of the through-window of the upper surface is coupled so as to project a head portion of a predetermined height over the upper surface in a partially embedded state, the shape restraint through the head portion during mold fixing It characterized in that it further comprises two or more positioning pins to limit the entry limit of the mold.

In addition, the diameter of the head portion of the positioning pin is characterized in that it can be formed in a variety of sizes.

In addition, the center portion of the upper surface is arranged at intervals according to a predetermined arrangement rule symmetrically from the front to the rear, and each is coupled in a form embedded in the upper surface with an appropriate depth, the impact between the upper surface and the bottom surface of the mold when fixing the mold It is characterized in that it further comprises a plurality of ball lifter to reduce the friction.

In addition, it is characterized in that it further comprises an extension portion which extends laterally in contact with the clamping means, respectively in the front and rear portions of the lower left and right sides.

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

3 is a perspective view showing a die plate according to a preferred embodiment of the present invention, Figure 4 is a cross-sectional view taken along line A-A of FIG. 5 is a perspective view partially showing a press apparatus to which a die plate according to the present invention is applied before a mold is set, and FIG. 6 is a press apparatus to which a die plate according to the present invention is applied to a mold set state. It is a perspective view shown.

The die plate 100 according to the present invention is for fixing a mold 30 having a molding hole 25 having a predetermined cross-sectional shape corresponding to the shape of a product to be manufactured to a press apparatus, as shown in FIG. Similarly, it has a substantially rectangular parallelepiped shape.

The die plate 100 according to the present invention includes a product recovery container access rail 110 penetrating the central portion of the lower portion in the transverse direction, and the product recovery container access rail 110 in the upper central portion. And a through-window 130 for discharging the product vertically, and having at least one clamping means guide rail 150 for each surface having a 'reverse T-shaped' cross-section open at each of the front, rear, left, and right sides thereof. .

The product collection container access rail 110 provided in the die plate 100 provides a space for allowing the product collection container 120 to freely enter and exit. Here, the product recovery container 120 is a tool that is used for the purpose of collecting the product that falls to the lower mold 30 in the molding process using the press device (1).

In addition, the product discharge through-window 130 is formed to penetrate vertically downward toward the product recovery container access rail 110, through which the mold 30 in the molding process using the press apparatus (1). The product to be dropped to the bottom to fall to the product recovery container 120.

In addition, the rail 150 for clamping means guide serves to guide the clamping means 70 used to fix the mold 30 to the die plate 100 according to the present invention. Each of the clamping means guide rails 150 is formed to have a 'reverse T' cross-sectional shape, similar to the clamping means guide rails 15 provided in the bolster 10. In addition, the die plate 100 according to the present embodiment includes two rails 150 for clamping means, each of which is open to each of the vertical, front, rear, left, and right surfaces thereof. Therefore, when fixing the mold 30, it is possible to fix the mold 30 in various directions using an appropriate number of clamping means 70 in consideration of the conveying direction of the raw material to be supplied.

The die plate 100 according to the preferred embodiment of the present invention also includes two positioning pins 170 at lateral symmetrical positions in the transverse direction of the rear portion of the product discharge through-window 130 on the upper surface. . Each of the positioning pins 170 is coupled so that the head portion 175 having a predetermined height protrudes from the upper surface in a partially embedded state. That is, the positioning pin 170 may be divided into a head portion 175 exposed on the upper surface of the die plate 100 and a buried portion embedded in the die plate 100, and bolts penetrating the center vertically. With a hole, it is coupled to the die plate 100 by fastening the fastening bolt 185 through the bolt fastening hole.

The positioning pin 170 is in contact with the rear surface of the mold 30 is formed to have a rectangular parallelepiped shape, the entry limit of the mold 30 entering from the front to the rear on the die plate 100 during the mold setting. It plays a role of limiting. Thus, the in-situ setting of the mold is facilitated. In particular, when the standard of the mold 30 is standardized, the mold setting operation can be made more easily due to the ease of setting such as the abnormality caused by the positioning pin 170. On the other hand, the head portion 175 of the positioning pin 170 need not be the same diameter as the buried portion of the lower, it can be changed. That is, when the size of the mold 30 to be used is different through the diameter change of the head portion 175, it is possible to appropriately respond according to the size of the mold 30 while maintaining easy alignment.

In addition, the die plates 100 according to the preferred embodiment of the present invention are arranged at intervals according to a predetermined arrangement rule which is symmetrical from front to back in the central portion of the upper surface, and each of the dies is embedded in a shape having an appropriate depth on the upper surface. A plurality of ball lifters 190 are coupled. Specifically, the present embodiment includes a total of six ball lifters 190 in a two-row array including two behind the product discharge through-window 130 and four in front of the product discharge through-window 130. . The ball lifter 190 is a well-known component, and is formed of a structure in which an elastic member such as a spring is embedded, and a ball of ball shape is mounted on the elastic member to allow free rolling motion. The pressure is applied upwards to place the ball partially exposed above the upper surface. These ball lifters 190 serve to reduce the impact and friction between the upper surface of the die plate 100 and the bottom surface of the mold when the mold is fixed in a manner of pushing from the front to the rear. That is, as it is common for the mold 30 to be formed of metal, it is easier to handle the mold on the die plate by the ball lifters 190, given that it has considerable self weight.

In addition, the die plate 100 according to the preferred embodiment of the present invention includes an extension 195 extending laterally in contact with the clamping means 70 at the front and rear portions of the lower left and right sides. Since the extension 195 is lower than the upper surface of the die plate 100, the height of the clamping means 70 for fixing the die plate 100 on the bolster 10 of the press apparatus 1, That is, it is possible to reduce the size of the up and down direction, and thus the die plate can be more stably fixed as the center is lowered. In addition, when fixing the mold 30 on the die plate 100, the clamping means 70 used to fix the die plate 100 to the bolster 10 is prevented from interfering with the work.

The die plate 100 according to the present invention as described above is used to fix the mold 30 in a state of being firmly fixed on the bolster 10 of the press apparatus 1 through the clamping means 70.

Specifically, as shown in FIGS. 5 and 6, the die plate 100 is firmly fixed on the bolster 10 of the press apparatus 1 through the clamping means 70. Of course, the alignment of the die plate 100 is also important for the alignment of the mold 30. However, once the die plate 100 is fixed in position, even when the mold 30 is changed, no additional adjustment is required, and thus, the mold 30 is replaced due to a change in shape of a product to be manufactured. Even if it is necessary to die plate 100 does not require a separate setting work.

The mold setting operation is performed by adjusting the mold (right and left position) while the operator pushes the mold from the front to the rear on the fixed die plate 100 so that the rear side of the mold contacts the positioning pin 170 above. 30) to the correct position. Then, the clamping means 70 is inserted into the appropriate clamping means guide rail 150, and the mold 30 is pressed by the clamping means 70 by pressing the edge of the mold 30 toward the upper surface of the die plate 100. ) Is firmly fixed to the die plate 100.

By providing a die plate for fixing the mold according to the present invention as described above to the press apparatus, the present invention makes it possible to set the mold in a very easy position. That is, it is easy to handle by the operator, the relatively high skill of the operator is less important, the time required for the mold setting operation can be significantly shortened, there is an advantage that the work stability is also significantly improved. Furthermore, it is possible to reduce the fatigue of the operator and to obtain an effect of remarkably improving the excellent productivity in the product forming process using the set mold.

While the invention has been shown and described in connection with specific embodiments, it is common practice in the art that various design changes and changes are possible without departing from the spirit and scope of the invention as set forth in the appended claims. Anyone who has a can easily know.

1 is a perspective view showing an example of a general press device,

2 is a perspective view showing an example of a press apparatus set to perform blanking processing;

3 is a perspective view showing a die plate according to a preferred embodiment of the present invention;

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a partial perspective view of a press apparatus to which a die plate according to the present invention is applied before a mold is set;

6 is a perspective view showing a press apparatus to which a die plate according to the present invention is applied while a mold is set;

* Description of the symbols for the main parts of the drawings *

1: press device 10: bolster

25: molding hole 30: mold

70: clamping means 100: die plate

110: product recovery container access rail 130: product discharge through window

150: rail for clamping means guide 170: positioning pin

175: head portion 185: fastening bolt

190: ball lifter 195: extension part

Claims (6)

A die plate having a rectangular parallelepiped shape for fixing a mold having a molding hole having a predetermined cross-sectional shape corresponding to the shape of a product to be manufactured to a press apparatus, It has a product recovery container entry rail passing through the central portion of the lower side in the transverse direction, and has a product discharge through window vertically penetrating toward the product recovery container entry rail from the upper central portion, One or more clamping means guide rails for each face having a 'reverse T' cross-section open to each face, In a state of being previously fixed on the bolster of the press apparatus by clamping means, it is possible to fix the mold placed at the top with one or more clamping means guided to the rail for the clamping means guide, The die is coupled to the upper surface of the die plate to be embedded so as to protrude, the mold is characterized in that it further comprises a ball lifter to reduce the impact and friction between the upper surface and the bottom surface of the mold when fixing the mold to the press apparatus Die plate to do. The method of claim 1, Respectively, the lateral symmetrical positions of the rear side of the through-window portion of the upper surface are coupled so as to protrude a head portion of a predetermined height above the upper surface in a partially embedded state, and the mold is fixed by the shape restriction through the head portion when the mold is fixed. Die plate for fixing the mold to the press apparatus, characterized in that it further comprises two or more positioning pins to limit the entry limit of. The method of claim 2, The die plate for fixing the mold to the press apparatus, characterized in that the diameter of the head portion of the positioning pin can be formed in various sizes. The method according to any one of claims 1 to 3, The number of the ball lifter, the die plate for fixing the mold to the press apparatus, characterized in that arranged in the interval according to a predetermined arrangement rule symmetrical from front to back in the central portion of the upper surface of the die plate. The method according to any one of claims 1 to 3, The die plate for fixing the mold to the press apparatus, further comprising an extension part extending laterally from the front and rear portions of the lower left side and the lower right side to come into contact with the clamping means. The method of claim 4, wherein The die plate for fixing the mold to the press apparatus, further comprising an extension part extending laterally from the front and rear portions of the lower left side and the lower right side to come into contact with the clamping means.