KR102157367B1 - Transfer of material in progressive mold - Google Patents

Abstract

According to the present invention, disclosed is a material transfer apparatus for a progressive mold. More specifically, in regard to the material transfer apparatus for a progressive mold comprising a material clamping part clamping a material inserted between upper and lower molds, and a material transfer part sequentially moving the material completed with primary press processing while being clamped by the material clamping part pitch by pitch for secondary press processing, the material clamping part includes: a pair of guide rails fixed to an upper surface of the lower mold at a distance; sliders placed on the guide rails respectively and moved forward and backward by the material transfer part; a clamping means combined with an upper surface of the sliders and comprising a lifting member lifted and projected upwards and a finger clamping both sides of the inserted material while moving forward to the inside or unclamping the same while moving backward; and a pressing member attached to a lower surface of the upper mold to be lifted and dropping the lifting member by pressing the same. When the bottom of the lifting member is raised by being elastically supported, the finger clamps the material while moving forward, and when the lifting member is dropped by the pressing member, the finger unclamps the material while moving backward. According to the present invention, it is possible to automatically transfer a material without an additional external apparatus.

Description

Material transfer device of progressive mold {Transfer of material in progressive mold}

The present invention relates to an apparatus for conveying a material of a progressive mold, and more particularly, to an apparatus for automatically transferring a processed material to a next process in a progressive mold that sequentially performs press processing.

The transfer of the press mold is installed in a progressive press in which a number of molds are installed and the material is sequentially transferred and formed, or it is installed between the press and the press, and the material molded in one mold or press is transferred to the next mold or the next press. It is part of a press automation device that transfers and performs other press processing operations.

In the conventional transfer feeder of such a press mold, a drive unit is installed outside the press apparatus, and a feeder bar with a plurality of fingers attached to the inner space of the press apparatus is installed horizontally and horizontally along a plurality of molds. Therefore, by the operation of the driving unit, the feeder bar is transferred vertically and horizontally inside the press device.

At this time, it was common to use a hydraulic cylinder or a motor and a gear as a separate external driving device.

Therefore, the conventional feeder bar has a structure that must protrude to the outside of the press device in order to obtain a driving force from a drive device installed outside the press device.

In addition, since the press device has a material supply device that supplies material to the outside of the press device, there is a problem that a lot of external space is required in the installation of the driving unit, and the feeder bar protrudes to the outside of the press device, so space utilization is very There is a problem of lowering.

In addition, in the conventional transfer feeder, in order to avoid interference between the component part transferring the material and the mold, the material was transferred by operating the transfer feeder while the press is completely stopped. Therefore, as the press is repeatedly idle for a certain period of time, the molding speed of the material by the press is low, and productivity is low.

Korean Patent Registration 10-0731636 (2007.6.18.) "Transfer Feeder"

Accordingly, the present invention is to solve the above-described problem, and an object of the present invention is to provide a structure capable of automatically transferring the material to the next mold by interlocking with the press upper mold without the need for a separate driving device for transferring the material. It is to provide a material conveying device for a progressive mold with excitation.

The material conveying device of the progressive mold according to the present invention for achieving the above object includes a material clamping part clamping a material drawn between an upper mold and a lower mold, and a primary press processing in a state clamped by the material clamping part. In the material transfer device of a progressive mold comprising a material transfer unit capable of sequentially moving the finished material by one pitch for secondary press processing, the material clamping unit is spaced apart from and fixed to the upper surface of the lower mold. Pair of guide rails; Sliders that are respectively seated on the guide rails and can be moved back and forth by the material transfer unit; A clamping means coupled to an upper surface of the slider and comprising an elevating member protruding upward and downward, and a finger for clamping both sides of the incoming material while advancing toward the inside or unclamping while moving backward; A pressing member that is attached to the lower surface of the upper mold and is raised and lowered by pressing the elevating member, but when the lower end of the elevating member is elastically supported and ascending, the finger moves forward and clamps the material. When the elevating member is lowered by the pressing member, the finger may move backward and unclamp the material.

Here, the clamping means includes an elevating frame having an elevating hole formed in the center and fixed to the slider, an elevating member inserted into the elevating hole to be elevating and having a tapered surface inclined at one side, the elevating member and the slider A vertical spring provided between the elevating member and vertically elastically supporting the elevating member, and a through hole formed in a'b' shape through which the upper portion of the elevating member penetrates, and a clamping groove clamping one side of the material at the end thereof It may include a finger formed and having a wedge surface inclined so as to correspond to the tapered surface in the through hole, and a horizontal spring provided between the finger and the lifting frame to elastically support the finger horizontally.

And the material transfer unit, the base plate fixed to the upper surface of the lower mold; A pair of gas springs installed on the upper surface of the base plate; A fixed body provided along the material transfer direction between the gas springs and having a horizontal long hole; A transfer bar that is movable through the fixed body in a material transfer direction and has protrusions protruding through the long hole on both sides; A connecting member coupled to an end of the transfer bar and coupled to the slider; Consisting of including; cam means coupled to the upper end of the gas spring and elastically supported and formed with a cam groove of a parallelogram shape to guide the protrusions penetrating the long hole on both sides of the inside, and when the upper mold is elevated and the cam means is pressed, the cam means is lifted. When the cam groove moves the protrusion back and forth, the transfer bar can move forward and backward.

At this time, the cam means is composed of an upper plate coupled to the upper mold, a side plate coupled to both sides of the upper plate and having the cam groove formed on an inner surface thereof, and a lower plate coupled to the lower end of the side plate, and the transfer bar and the fixed body It is housed inside.

In addition, a stopper may be further provided on the outer side of the gas spring to guide the lowering of the upper plate and limit the ascent.

According to the present invention described above, since the material transfer unit operated in conjunction with the lifting of the upper mold is driven by a cam method, the material can be automatically transferred without an external device.

In addition, the unit cost and energy of equipment are reduced and productivity is increased.

In addition, since a separate transfer equipment is not used, maintenance problems are greatly reduced.

1 is a perspective view showing the appearance of a material transfer device for a progressive mold according to an embodiment of the present invention
Figure 2 is an exploded perspective view showing the structure of the clamping means of the present invention shown in Figure 1
Figure 3 is a longitudinal sectional view of the clamping means of the present invention shown in Figure 1
Figure 4 is a perspective view showing the shape of the fixed body and cam means of the present invention shown in Figure 1
Figure 5 is a state diagram showing a state in which the upper mold is lowered in the present invention
Figure 6 is an operating state diagram showing a material transfer process using the present invention

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

For reference, the description with reference to the drawings is for easier understanding of the present invention, and the scope of the present invention is not limited thereto. Further, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted.

1 is a perspective view showing the appearance of a material transfer device for a progressive mold according to an embodiment of the present invention.

The present invention is installed in a row inside a progressive press mold that sequentially processes a strip-shaped material that is inserted between the upper mold (U) and the lower mold (D), so that the upper mold (U) is raised and lowered without a separate driving device. It relates to a device capable of automatically transferring a material to the next step by being linked to the drive.

In the present invention, a material that is largely drawn in may be composed of a material clamping unit 100 and a material transfer unit 200 as shown.

First, the material clamping unit 100 will be described with reference to FIGS. 2 and 3 together.

2 is an exploded perspective view showing the structure of the clamping means of the present invention shown in FIG. 1, and FIG. 3 is a longitudinal sectional view of the clamping means of the present invention shown in FIG.

The material clamping unit 100 is configured to clamp and fix both sides in order to press-process the strip-shaped material that is drawn between the upper mold (U) and the lower mold (D), or operate to be unclamped for transport of the material. As, it may be configured to include a guide rail 110, a slider 120, a clamping means 130, and a pressing member 140.

The guide rail 110 is installed on the upper surface of the lower mold (D), and a pair of the guide rails 110 are spaced apart from each other at a predetermined interval and are provided in parallel.

The guide rail 110 may have a structure in which a rail protrusion 111 is formed inside to prevent the slider 120 from being separated while guiding the reciprocating movement of the slider 120.

In addition, the sliders 120 may be seated and slid on the guide rails 110, respectively. At this time, the side surface of the slider 120 is guided by a linear reciprocating movement while being caught by the rail jaw 111.

For reference, a mold press (not shown) for primary processing may be provided between the sliders 120 facing each other.

A clamping means 130 is coupled and fixed to the upper surface of the slider 120. That is, the clamping means 130 is moved by the movement of the slider 120.

The clamping means 130 has a structure that clamps both sides of the incoming material and fixes it during press processing, and at the same time enables unclamping for transfer of the material having the primary processing completed.

To this end, the clamping means 130 includes a lifting frame 131, a lifting member 132, a vertical spring 133, a finger 134, and a horizontal spring 135.

The lifting frame 131 is formed in a rectangular shape and has a lifting hole 131a penetrating up and down in the center.

A lifting member 132 is inserted into the lifting hole 131a. The cross section of the lifting member 132 is formed to be the same as the cross section of the lifting hole 131a, so that the lifting member 132 may move up and down in the lifting hole 131a.

Further, a vertical spring 133 is provided at a lower end of the lifting member 132 to elastically support the lifting member 132. In other words, a vertical spring 133 is provided between the lower end of the lifting member 132 and the upper surface of the slider 120.

At this time, the elevating member 132 maintains a state in which a part of the elevating member 132 protrudes above the elevating hole 131a in a state in which there is no external force and is elastically supported by the vertical spring 133.

Therefore, when the upper end of the lifting member 132 is pressed, the vertical spring 133 is compressed, and the lifting member 132 may descend.

However, an inclined tapered surface 132a is formed on the inner surface of the lifting member 132.

Specifically, the tapered surface 132a may be formed to be inclined downward inward, and is formed on the upper part of the lifting member 132 exposed to the outside of the lifting hole 131a.

As shown, the finger 134 is bent once and has an approximately'a' shape.

In detail, it may include a first finger 134a that faces horizontally inward and a second finger 134e that is vertically formed at the rear end of the first finger 134a.

Here, a through hole 134b is formed in the center of the first finger 134a to penetrate the exposed upper portion of the elevating member 132. In this case, a wedge surface 134c corresponding to the tapered surface 132a is formed in the through hole 134b.

The wedge surface 134c is formed to be inclined upwardly to the outside and performs a relative motion in a state in close contact with the tapered surface 132a.

That is, the finger 134 moves forward or backward due to the relative motion of the tapered surface 132a and the wedge surface 134c by the lifting of the lifting member 132.

Further, a clamping groove 134d is formed at an end of the first finger 134a so that one side of the material may be clamped while being inserted.

In addition, a horizontal spring 135 is provided between the second finger 134e and the lifting frame 131 to support the finger 134 horizontally. That is, the fingers 134 are elastically supported to maintain the retracted state.

Therefore, when the elevating member 132 in a protruding state is pressed, the vertical spring 133 is compressed, and the elevating member 132 descends, and thus the wedge surface which was constrained by the tapered surface 132a As (134c) becomes free and the horizontal spring 135 expands, the finger 134 moves backward.

Conversely, when the force pressing the lifting member 132 is removed, the vertical spring 133 expands and the lifting member 132 rises, and thus the tapered surface 132a pushes the wedge surface 134c. Therefore, as the horizontal spring 135 is compressed, the finger 134 moves forward.

Preferably, the elastic modulus of the vertical spring 133 should be greater than the elastic modulus of the horizontal spring 135.

Meanwhile, a pressing member 140 is attached to the lower surface of the upper mold U.

The pressing member 140 may pressurize the upper end of the lifting member 132 while lifting and descending together by the lifting of the upper mold U.

To this end, the pressing member 140 may be formed in a flat plate shape, and the width should be sufficiently considered to simultaneously press the pair of lifting members 132 facing each other.

Next, the material transfer unit 200 will be described with reference to FIG. 4. Figure 4 is a perspective view showing the appearance of the fixed body and cam means of the present invention shown in Figure 1

The material transfer unit 200 moves the material clamping unit 100 itself to a position where the secondary processing is performed by a cam driving method for transferring the material that has been subjected to primary processing in a state clamped by the material clamping unit 100. As a configuration capable of transferring one pitch at a time, the base plate 210, the gas spring 220, the fixed body 230, the transfer bar 240, the connecting member 250, the cam means 260 and the stopper 270 It can be configured to include.

First, the base plate 210 is a flat plate-shaped support fixed to the upper surface of the lower mold D. The gas spring 220, the fixed body 230, the transfer bar 240, the connecting member 250, the cam means 260 and the stopper 270 are installed and supported on the upper part of the base plate 210.

The gas spring 220 is provided with a pair of springs that can be elastically supported using gas, and is installed to be spaced apart from the upper surface of the base plate 210.

And a fixed body 230 is installed and fixed between the gas springs 220 spaced apart.

The fixed body 230 has an approximately rectangular shape, and the body 231 connects between the two flat plates spaced back and forth, so that the horizontal cross-section has a'I' shape, and penetrates the body 231 in the conveying direction of the material. The transfer hole 232 is formed.

In addition, long holes 233 are formed on both sides of the fixed body 230 along the transfer hole 232.

At this time, the long hole 233 communicates with the transfer hole 232.

The transfer bar 240 is inserted into the transfer hole 232 while passing through.

The transfer bar 240 may slidably move along the inside of the transfer hole 232, and protrusions 241 protruding from both sides thereof are formed.

Here, the protrusions 241 are exposed to the outside through the long holes 233, respectively. Therefore, since the protrusion 241 is caught at one end or the other end of the long hole 233, the transfer bar 240 is not separated from the transfer hole 232.

A connecting member 250 is coupled to an end of the transfer bar 240.

The connecting member 250 connects the transfer bar 240 and the slider 120, and may be formed in a bar shape, and the length may include a width spaced apart from the pair of the sliders 120. Is provided. That is, the end portions of the slider 120 are respectively coupled to both ends of the connecting member 250.

A cam means 260 is provided on the upper side of the fixed body 230 to be elastically supported by the gas spring 220.

Specifically, the cam means 260 is composed of a lower plate 261, a side plate 262 vertically coupled to both sides of the lower plate 261, and an upper plate 263 coupled to the upper end of the side plate 262 It can form a rectangle with open front and rear sides.

In this case, the upper plate 263 is formed to be wider than the lower plate 261.

Accordingly, the fixed body 230 and the transfer bar 240 are accommodated in the cam means 260. And the cam means 260 is a structure that can be raised and lowered while the fixed body 230 is fixed.

However, cam grooves 262a are formed on each inner surface of the side plate 262.

The cam groove 262a may have a trajectory forming an approximately parallelogram as shown as a recessed groove for guiding the path of the protrusion 241. At this time, the cam groove (262a) is formed to be inclined downward toward the progress direction of the material.

In addition, while maintaining the state in which the protrusion 241 is inserted into the cam groove 262a, it may move along the path of the cam groove 262a.

Accordingly, the cam groove 262a is also raised and lowered according to the elevation of the cam means 260, and the protrusion 241 introduced therein moves along the path of the cam groove 262a, and the protrusion 241 is front and rear Since only jin is possible, the transfer bar 240 is eventually moved forward and backward.

Meanwhile, a stopper 270 may be further provided outside the gas spring 220, respectively.

The stopper 270 may be installed in a column shape, and the upper plate 263 of the cam means 260 is positioned between the two stoppers 270.

In addition, a locking protrusion 271 bent inward is formed on an upper end of the stopper 270 to limit the elevation of the upper plate 263.

For reference, it is preferable that the pressing body 280 is coupled to the lower surface of the upper mold U so as to press the upper plate 263 while descending.

Hereinafter, the operation of the present invention will be described with reference to FIGS. 5 and 6 together.

5 is a state diagram showing a state in which the upper mold is lowered in the present invention. Specifically, the upper mold is lowered so that the pressing member presses the elevating member, and at the same time, the pressing body presses the upper plate of the cam means. And Figure 6 is an operating state diagram showing a material transfer process using the present invention.

<FIG. 6A>

It shows a state in which the upper mold (U) descends to the bottom dead center and performs the primary press processing.

At this time, as shown, the pressing member 140 presses the upper end of the elevating member 132 to descend to the minimum. At this time, the vertical spring 133 is compressed.

As the elevating member 132 descends, the tapered surface 132a and the wedge surface 134c are spaced apart from each other, and the finger 134 is in a state that is rearwardly moved due to the expansion force of the horizontal spring 135. That is, the material m is unclamped by the reverse of the facing fingers 134.

In addition, the pressing body 280 of the material transfer unit 200 is also lowered to the minimum by pressing the cam means 260.

As the cam means 260 descends, the protrusion 241 is positioned at the highest point of the cam groove 262a, and thus the transfer bar 240 moves backwards to the rearmost position. Accordingly, the slider 120 coupled to the transfer bar 240 is also in a rearward state.

<Fig. 6b>

As the upper mold (U) rises, it represents a state in which the first press-processed material (m) is transferred forward.

In this case, since the pressing member 140 rises as shown, the lifting member 132 rises due to the expansion force of the vertical spring 133.

In addition, as the elevating member 132 rises, the tapered surface 132a and the wedge surface 134c are in close contact with each other, and the fingers 134 are pushed forward to advance forward. At this time, the horizontal spring 135 is compressed.

Accordingly, the material m is fitted into the clamping groove 134d formed at the end of the advancing finger 134 to clamp the material m.

At the same time, since the pressurizing body 280 of the material transfer unit 200 also rises, the cam means 260 is automatically raised by the gas spring 220.

That is, as the cam means 260 rises, the protrusion 241 is positioned on the lower slope of the cam groove 262a, whereby the transfer bar 240 moves forward. Accordingly, since the slider 120 coupled to the transfer bar 240 is also advanced, the clamped material m is moved forward and transferred.

<Fig. 6c>

The upper mold (U) rises to the top dead center and shows a state in which the transfer of the material (m) is completed to the position for secondary press processing.

At this time, as shown, the lifting member 132 is raised to the maximum, and the finger 134 maintains a state in which the material m is clamped.

And the cam means 260 of the material transfer unit 200 is also raised to the maximum.

As the cam means 260 rises, the protrusion 241 is positioned at the lowest point of the cam groove 262a, and thus the transfer bar 240 is in a state in which the transfer bar 240 is advanced to the foremost position.

Accordingly, the slider 120 coupled to the transfer bar 240 is also in a state that is advanced to the foremost position. And secondary machining can be done at this location.

<FIG. 6D>

As the upper mold U descends again, the material clamping unit 100 is moved back to its original position, and at the same time, secondary press processing is performed.

At this time, as shown, the pressing member 140 is lowered by pressing the elevating member 132 while descending.

Further, as the elevating member 132 descends, the tapered surface 132a and the wedge surface 134c are spaced apart from each other, and the finger 134 moves backward to unclamp the material m.

At the same time, since the pressing body 280 of the material transfer part 200 also descends, the cam means 260 is pressed to descend.

That is, as the cam means 260 descends, the protrusion 241 is positioned on the upper slope of the cam groove 262a, whereby the transfer bar 240 moves backward. Accordingly, since the slider 120 coupled to the transfer bar 240 also moves backward, the material is in a stopped state, but only the clamping means 130 moves backward.

In the process of the clamping means 130 reaching the rear end, the first and the second processing are simultaneously performed, and then the process of FIG. 6A is repeated while performing the same.

Although the exemplary embodiments of the present invention have been described above with reference to the drawings, a person of ordinary skill in the field to which the present invention belongs will be able to perform various applications and modifications within the scope of the present invention based on the above contents. Therefore, the scope of the present invention is limited to the described embodiments and should not be determined, and should not be determined by the claims to be described later, but also by those equivalents to the claims.

100: material clamping part
110: guide rail
111: rail jaw 120: slider
130: clamping means 131: lifting frame
131a: elevating hole 132: elevating member
132a: tapered surface 133: vertical spring
134: finger 134a: first finger
134b: through hole 134c: wedge surface
134d: clamping groove 134e: second finger
135: horizontal spring 140: pressure member
200: material transfer unit 210: base plate
220: gas spring 230: fixed body
231: body 232: transfer hole
233: long hole 240: transfer bar
241: protrusion 250: connecting member
260: cam means 261: lower plate
262: side plate 262a: cam groove
263: upper plate 270: stopper
271: locking jaw 280: pressing body
U: Upper mold D: Lower mold
m: material

Claims (5)

A material clamping unit that clamps the material flowing between the upper mold and the lower mold, and the material that has been clamped by the material clamping unit and which has been subjected to primary press processing can be sequentially moved one pitch at a time for secondary press processing. In the material transfer device of a progressive mold composed of a material transfer unit,
The material clamping part,
A pair of guide rails spaced apart from and fixed to the upper surface of the lower mold;
Sliders that are respectively seated on the guide rails and can be moved back and forth by the material transfer unit;
A clamping means coupled to an upper surface of the slider and comprising an elevating member protruding upwards and downwards and a finger for clamping both sides of the incoming material while advancing toward the inside or unclamping while moving backward;
Consisting of including a; a pressing member that is attached to the lower surface of the upper mold to be raised and lowered by pressing the lifting member,
The material of a progressive mold, characterized in that when the lower end of the elevating member is elastically supported and rises, the finger moves forward and clamps the material, and when the elevating member descends by the pressing member, the finger moves backward and unclamps the material. Transfer device. The method of claim 1,
The clamping means,
An elevating frame having an elevating hole formed in the center and fixed to the slider,
An elevating member inserted into the elevating hole to be elevating and having a tapered surface inclined at one side thereof,
A vertical spring provided between the elevating member and the slider to vertically elastically support the elevating member;
A through hole formed in a'A' shape and passing through the upper part of the lifting member is formed in the center, a clamping groove is formed at the end of the material, and a wedge surface inclined to correspond to the tapered surface inside the through hole With the fingers formed,
And a horizontal spring provided between the finger and the lifting frame to support the finger horizontally and elastically. The method of claim 1,
The material transfer unit,
A base plate fixed to the upper surface of the lower mold;
A pair of gas springs installed on the upper surface of the base plate;
A fixed body provided along the material transfer direction between the gas springs and having a horizontal long hole;
A transfer bar that is movable through the fixed body in a material transfer direction and has protrusions protruding through the long hole on both sides thereof;
A connecting member coupled to an end of the transfer bar and coupled to the slider;
Consisting of including; a cam means coupled to the upper end of the gas spring and elastically supported and formed with a parallelogram cam groove so that the protrusion passing through the long hole is guided on both inner sides,
When the upper mold pressurizes the cam means while elevating, the elevating cam groove moves the protrusion back and forth so that the transfer bar can move forward and backward. The method of claim 3,
The cam means,
Consisting of an upper plate coupled to the upper mold, a side plate coupled to both sides of the upper plate and having the cam groove formed on an inner surface thereof, and a lower plate coupled to the lower end of the side plate,
Material transfer device for a progressive mold, characterized in that accommodating the transfer bar and the fixed body therein. The method of claim 4,
A material conveying device for a progressive mold, further comprising a stopper installed vertically on the outer side of the gas spring to guide the lowering of the upper plate and limit the ascent.

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