JP2009113047A - Sheet feeding apparatus, sheet feeding method and press line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet feeding apparatus, a sheet feeding method and a press line capable of enhancing the production efficiency by continuously feeding trapezoidal sheets to the press line. <P>SOLUTION: The sheet feeding apparatus 100 comprises: a conveyor 2 for conveying a strip-like sheet body 1; a turning shear 3 for alternately performing the forward inclined cut and the reverse inclined cut to the sheet body 1; an inversion means 5 for inverting a reverse-directional trapezoidal sheet 1b in the same direction as the trapezoidal sheet 1a out of the trapezoidal sheet 1a, and the reverse-directional trapezoidal sheet 1b opposite to the trapezoidal sheet 1a which are alternately formed and arranged on the conveyor 2 by both inclined cuts; and a feed means 6 for feeding the trapezoidal sheet 1a in the same direction to the press line 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sheet supply apparatus, a sheet supply method, and a press line.

  In the field of press processing, strip-shaped sheet bodies are cut to a desired size and stacked, so-called stacking blanking lines, and sheets are conveyed one by one from the stack, and sequentially pressed into the desired shape. There are transfer press lines (see, for example, Non-Patent Documents 1 and 2).

Here, FIG. 8A is a perspective view showing a conventional blanking press line, and FIG. 8B is a perspective view showing a conventional transfer press line.
As shown in FIG. 8 (a), in the blanking press line X, the curl of the sheet body is eliminated by the coil feeder X1, and the belt-like sheet body is cut into a desired size by the blanking / progressive press X2. The sheets cut by the pillar X3 are stacked to form a stack.
Such a stack is then transported to the press line.

On the other hand, as shown in FIG. 8B, in the transfer press line Y, sheets are taken out from the stack one by one by the destack feeder Y1, supplied to the three-dimensional transfer press Y2, and the sheets are sequentially pressed. Go.
And the sheet | seat press-processed by the palletizer Y3 is delivered.
H & F Co., Ltd., “Product Information“ Automatic Press Line (Transfer Press Line) ””, [online], H & F Co., Ltd. website, [September 1, 2006 search], Internet <URL: http: / /www.hf.co.jp/products/line/line_transfer.html> H & F Co., Ltd., “Product Information“ Automatic Press Line (Transfer Press Line) ””, [online], H & F Co., Ltd. website, [September 1, 2006 search], Internet <URL: http: / /www.hf.co.jp/products/line/line_blanking.html>

However, since the blanking press line and the transfer press line are independent in the above-described conventional press working, the two lines are not always synchronized with each other in timing, and line balancing is not good.
Moreover, since it takes time to carry the stack, the production efficiency is insufficient.

In the blanking press line, when the sheet has a trapezoidal shape, when the strip-shaped sheets are alternately inclined and cut, the orientations of the sheets are alternately reversed.
For this reason, the blanking press line and the transfer press line cannot be connected as they are.

  The present invention has been made in view of the above circumstances, and provides a sheet supply apparatus, a sheet supply method, and a press line that improve production efficiency by allowing trapezoidal sheets to be continuously supplied to the press line. With the goal.

  The present inventor has intensively studied to solve the above problem, and found that the above problem can be solved by inverting the trapezoidal sheet at a predetermined position after the strip-shaped sheet body is cut into a trapezoidal shape. The present invention has been completed.

  That is, the present invention is (1) a conveyor that conveys a belt-like sheet body, a swiveling shear that alternately performs forward and reverse inclined cutting on the sheet body, and alternately formed and arranged on the conveyor by both inclined cutting. Of the trapezoidal sheet and the trapezoidal sheet opposite to the trapezoidal sheet, the reverse means for inverting the trapezoidal sheet in the reverse direction to make it the same direction as the trapezoidal sheet, and the trapezoidal sheet in the same direction And a supply means for supplying to the press line.

  The present invention resides in (2) the sheet feeding device according to (1), wherein the reversing unit includes a rotatable rotating part and an adsorption holding part attached to the rotating part.

  The present invention (3) further includes a lifter for raising the reverse trapezoidal sheet, and the lifter lifts the reverse trapezoidal sheet and adsorbs it to the adsorption holding unit. Existing sheet feeding apparatus.

  In the present invention, (4) a belt-like sheet body is conveyed by a conveyor, and the sheet body is alternately forward-slope cut and reverse-slope cut by a rotating shear so that the trapezoidal sheet and the trapezoidal sheet are on the conveyor. In the sheet supply method, all the trapezoidal sheets are turned in the same direction by alternately forming and arranging reverse trapezoidal sheets, and then inverting the reverse trapezoidal sheets.

  The present invention resides in (5) a press line to which the sheet feeding device described in (1) is connected.

  This invention exists in the press line of the said (5) description provided with (6) Dandem press or a transfer press.

  In addition, as long as the objective of this invention is met, the structure which combined said (1)-(6) suitably is also employable.

Since the sheet supply apparatus of the present invention includes reversing means for reversing the trapezoidal sheet in the reverse direction, all trapezoidal sheets can be oriented in the same direction even if the trapezoidal sheet has been inclined and cut.
Thereby, according to the said sheet supply apparatus, since a trapezoidal sheet | seat can be directly supplied to a press line, a press work product is obtained by the consistent process from a strip | belt-shaped sheet | seat body.
Therefore, according to the sheet feeding apparatus, the problem of line balancing does not occur, and the production efficiency is improved.

In the sheet supply apparatus, the trapezoidal sheet can be reliably and efficiently reversed when the reversing unit includes a pivotable pivoting unit and a suction holding unit attached to the pivoting unit.
That is, in the sheet feeding device, the trapezoidal sheet is sucked and held by the suction holding unit, the rotating unit is reversed together with the suction holding unit and the trapezoidal sheet, and then the trapezoidal sheet is returned to the conveyor, Inversion of the shape sheet is achieved.

  In the above sheet supply device, it is further provided with a lifter for raising the reverse trapezoidal sheet, and when the lifter lifts the reverse trapezoidal sheet and sucks it to the suction holding unit, it is a simple device, The trapezoidal sheet can be reversed quickly.

In the sheet supply method of the present invention, the trapezoidal sheet at a predetermined position is reversed, and all the trapezoidal sheets on the conveyor are turned in the same direction, whereby the trapezoidal sheet can be directly supplied to the press line. .
That is, if the above sheet supply method is used, a press-processed product can be obtained from a strip-shaped sheet body by consistent processing.
Therefore, if the sheet feeding method is used, production efficiency is improved.

  The press line of the present invention is excellent in production efficiency because the above-described sheet supply device is connected. As the press line, a dandem press or a transfer press is preferably used.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary.
In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.
Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified.
Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

FIG. 1 is a schematic side view schematically showing an example of a sheet supply apparatus according to the present embodiment, and FIG. 2 is a schematic top view for explaining an arrangement state of trapezoidal sheets in the sheet supply apparatus of FIG. It is.
As shown in FIGS. 1 and 2, the sheet supply apparatus 100 according to the present embodiment includes a conveyor 2 that conveys a belt-shaped sheet body 1, a swiveling shear 3 that cuts the sheet body 1, and a trapezoidal sheet 1 b. A reversing unit 5 for reversing, a lifter 7 for lifting the trapezoidal sheet 1 b and adsorbing it to the reversing unit 5, and a supplying unit 6 for supplying the trapezoidal sheet 1 a to the press line 10 are provided.

In the sheet supply apparatus 100, the belt-like sheet body 1 is wound in a coil shape, and is sequentially conveyed by the conveyor 2 therefrom.
Then, when the sheet body 1 is conveyed to the position of the turning shear 3, the sheet body 1 is inclined and cut by the turning shear 3.

Here, the turning shear 3 will be described.
FIG. 3 is a schematic front view schematically showing a turning shear in the sheet supply apparatus according to the present embodiment.
As shown in FIG. 3, the turning shear 3 includes a fixed base 11, a lower blade holder 12 a disposed so as to be rotatable via a bearing 18 provided on the base 11, A lower blade 13a mounted on the lower blade holder 12a, an upper blade 13b fixed at a position corresponding to the lower blade 13a so that the sheet body 1 can be cut, and an upper blade holder that supports the upper blade 13b 12b, a slide 14 for supporting the upper blade holder 12b, and a guide post 15 for supporting the upper blade holder 12b and the lower blade holder 12a. The upper blade holder 12b can be moved up and down in the vertical direction with respect to the lower blade holder 12a via the guide post 15 and cannot be rotated in the horizontal direction.

In the revolving shear 3, the upper blade holder 12b and the upper blade 13b are supported and fixed to the slide 14, and the slide 14 can be moved up and down.
As a result, the position of the upper blade 13b varies as the slide 14 moves up and down.
And when the sheet | seat body 1 exists between the upper blade 13b and the lower blade 13a, the sheet | seat body 1 is cut | disconnected by moving the slide 14 downward and pinching the sheet body 1 with the upper blade 13b and the lower blade 13a. The

  Further, in the turning shear 3, the upper blade holder 12b and the lower blade holder 12a are supported and fixed by the guide posts 15, so that the upper blade holder 12b and the lower blade holder 12a rotate together. It has become.

FIG. 4 is a schematic top view for explaining the turning state of the turning shear of FIG.
As shown in FIG. 4, in the revolving shear 3, the upper blade holder 12b and the lower blade holder 12a revolve alternately at a predetermined angle on the base 11 so that the left turn and the right turn are symmetric. ing.

In the turning shear 3, when the upper blade holder 12b and the lower blade holder 12a turn left and stop, the slide 14 moves downward, and the sheet body 1 is inclined and cut by the upper blade 13b and the lower blade 13a. (Hereinafter referred to as “positive tilt cutting”).
Also, after the slide 14 is raised, the upper blade holder 12b and the lower blade holder 12a return to their original positions, turn right as it is, and when stopped, the slide 14 moves downward again, and the upper blade 13b The sheet body 1 is inclined and cut by the lower blade 13a (hereinafter referred to as “reverse inclined cutting”).

  As described above, in the sheet feeding apparatus 100, the swivel shear 3 alternately performs forward inclination cutting and reverse inclination cutting with respect to the sheet body 1 in turn, so that the table is placed on the conveyor 2 as shown in FIG. The shape sheet 1a and the trapezoidal sheet 1b opposite to the trapezoidal sheet 1a are alternately formed and arranged.

In the sheet supply apparatus 100, when the sheet body 1 is inclined and cut by the revolving shear 3, the conveyor 2 is stopped, and after the sheet body 1 is inclined and cut, the conveyor 2 moves again.
That is, in the sheet supply apparatus 100, the conveyor 2 moves intermittently.

Returning to FIG. 1, in the sheet feeding apparatus 100, when the trapezoidal sheet 1 a formed and arranged on the conveyor 2 and the reverse trapezoidal sheet 1 b are further conveyed by the conveyor 2 and reach the position of the reversing means 5, The reverse trapezoidal sheet 1b is inverted by the inversion means 5 in the same direction as the trapezoidal sheet 1a.
That is, of the trapezoidal sheet 1a and the trapezoidal sheet 1b opposite to the trapezoidal sheet 1a alternately formed and arranged on the conveyor 2 by the both-sided cutting, the reverse trapezoidal sheet 1b is inverted by 180 °. .

Here, the inversion means 5 will be described.
As shown in FIG. 1, the reversing device 5 includes a rotatable rotating portion 21 and a suction holding portion (hereinafter referred to as “reversing suction holding portion”) 22 attached to the rotating portion 21. And.
In the reversing device 5, the rotating unit 21 rotates using a motor as a drive source.
A cylinder may be used instead of the motor.
For this reason, it is possible to control the reverse trapezoidal sheet 1b to rotate 180 °.
The reversing suction holding unit 22 reliably holds the trapezoidal sheet 1b in the reverse direction by suction due to reduced pressure.

In addition, the sheet supply apparatus 100 according to the present embodiment further includes a lifter 7 for raising the reverse trapezoidal sheet 1 b below the reversing unit 5.
As shown in FIG. 1, the lifter 7 includes an air cylinder, and includes a cylinder 7a, a rod 7b that moves up and down in the cylinder 7a, and a flat support 7c attached to the tip of the rod 7b.
The lifter 7 has a function of lifting the reverse trapezoidal sheet 1 b and adsorbing it to the adsorption holding unit of the inverting means 5.

FIG. 5 is an explanatory diagram for explaining the reversing operation of the reversing device in the sheet feeding apparatus according to the present embodiment.
As shown in FIG. 5, in the reversing device 5, first, the reverse trapezoidal sheet 1 b is lifted by the lifter 7 and sucked and held by the reversing suction holding unit 22.
The reversing suction holding unit 22 is provided with a suction port (not shown) at the center, and the trapezoidal sheet 1b is sucked and held by sucking the trapezoidal sheet 1b from the suction port.

Thereafter, the lifter 7 is lowered, and at the same time, the rotating portion 21 rotates 180 ° together with the reverse suction holding portion 22 and the trapezoidal sheet 1b.
Then, the trapezoidal sheet is reversed by returning the trapezoidal sheet from the reversing suction holding unit 22 onto the conveyor 2.
As described above, in the sheet supply apparatus 100, the trapezoidal sheet can be reversed reliably and efficiently by using the lifter 7 and the reversing unit 5.

The driving source of the reversing device 5 uses a servo motor capable of controlling the rotation speed of the rotating unit 21 and the time from when the trapezoidal sheet 1b is sucked and held until it is reversed and returned to the conveyor 2. It is preferable.
In particular, as described above, in the supply device 100 according to this embodiment, since the conveyor 2 moves intermittently, the rotation speed is set so that the inversion of the trapezoidal sheet 1b is completed while the conveyor 2 is stopped. It is also preferable to line balance the above time.

Thereby, as shown in FIG. 2, all the trapezoidal sheets 1a conveyed after that become the same direction.
The trapezoidal sheet 1a in the same direction is supplied to the press line 10 by the supply means 6 at a predetermined position.

Here, the supply means 6 will be described.
FIG. 6 is a schematic side view schematically illustrating a supply unit in the sheet supply apparatus according to the present embodiment.
As shown in FIG. 6, the supply means 6 can attract and hold the trapezoidal sheet 1 a at the center shaft 31, the arm 32 connected to the center shaft 31 so as to be rotatable, and the tip of the arm 32. An adsorption holding unit (hereinafter referred to as “supply adsorption holding unit”) 33.

In the supply means 6, the arm 32 can rotate in the horizontal direction around the central axis 31, and the trapezoidal sheet 1a can be carried into the carry-in port of the press line 10 from the conveyor 2 at the shortest distance. It is.
The suction holding unit 33 for supply is provided with a suction port at the center, and the trapezoidal sheet 1a is sucked and held by sucking the trapezoidal sheet 1a from the suction port.

  And the trapezoidal sheet | seat 1a supplied to the press line 10 is press-processed, and becomes a desired press-processed product.

As described above, since the sheet supply apparatus 100 according to the present embodiment includes the reversing unit 5 that reverses the trapezoidal sheet 1b in the reverse direction, even if the trapezoidal sheets 1a and 1b are obliquely cut, Sheets can be oriented in the same direction.
Thereby, since the trapezoidal sheet 1a can be directly supplied to the press line 10, according to the sheet supply device 100, a press-processed product can be obtained from the strip-shaped sheet body 1 by consistent processing.
Therefore, according to the sheet supply apparatus 100, the production efficiency is improved.

Next, the press line 10 to which the above-described sheet supply apparatus 100 is connected will be described.
FIG. 7 is a flowchart showing a press line process according to the present embodiment.
As shown in FIG. 7, in the press line 10, first, the trapezoidal sheet is conveyed from the sheet supply apparatus 100 to the idle stage S <b> 1.
As a result, the trapezoidal sheet is positioned.

Next, the trapezoidal sheet is conveyed from the idle stage S1 to the press device, and sequentially pressed by the press device S2.
As the press apparatus S2, a tandem press including a plurality of press apparatuses or a transfer press including a plurality of press locations is employed.

  Then, the press-processed product that has been press-processed in a desired shape is delivered by a palletizer S3 such as product loading.

Thus, since the sheet supply apparatus 100 is connected to the press line 10 according to the above-described embodiment, a press-processed product can be obtained from the belt-shaped sheet body by consistent processing.
Therefore, according to the press line 10, the production efficiency is excellent.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.

For example, the sheet supply apparatus 100 according to the present embodiment may include a coil feeder.
That is, in the sheet supply apparatus 100, the belt-like sheet body 1 is conveyed to the position of the swivel shear 3 by the conveyor 2, but before being conveyed to the position of the swirl shear 3, the sheet body 1 is conveyed by the coil feeder. The curl may be eliminated.

In the sheet supply apparatus 100 according to the present embodiment, a trapezoidal sheet is used, but a triangular sheet may be used.
In this case, the sheet needs to be an isosceles triangle or an equilateral triangle that is symmetrical.

In the sheet supply apparatus 100 according to the present embodiment, the lifter 7, which is an air cylinder, lifts the reverse trapezoidal sheet 1 b and attracts it to the reversing suction holding unit 22 of the reversing unit 5. It is not limited.
That is, the reversing suction holding unit 22 of the reversing unit 5 can be moved up and down, and the reversing suction holding unit 22 itself moves downward to suck the trapezoidal sheet.

  In the sheet supply apparatus 100 according to the present embodiment, as the supply unit 6, a central shaft 31, an arm 32 that is rotatably connected to the central shaft 31, and a trapezoidal sheet 1 a at the tip of the arm 32. Is used, but a feed bar of a transfer press or a dedicated sheet loader may be used.

  In the press line 10 according to the present embodiment, the press-processed product that has been press-processed is delivered by the palletizer S3, etc., but before that, the press-processed product may be cleaned with a cleaning device.

FIG. 1 is a schematic side view schematically illustrating an example of a sheet feeding apparatus according to the present embodiment. FIG. 2 is a schematic top view for explaining an arrangement state of trapezoidal sheets in the sheet supply apparatus of FIG. FIG. 3 is a schematic front view schematically showing a turning shear in the sheet supply apparatus according to the present embodiment. FIG. 4 is a schematic top view for explaining the turning state of the turning shear of FIG. FIG. 5 is an explanatory diagram for explaining the reversing operation of the reversing device in the sheet feeding apparatus according to the present embodiment. FIG. 6 is a schematic side view schematically illustrating a supply unit in the sheet supply apparatus according to the present embodiment. FIG. 7 is a flowchart showing a press line process according to the present embodiment. FIG. 8A is a perspective view showing a conventional blanking press line, and FIG. 8B is a perspective view showing a conventional transfer press line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sheet body 1a, 1b ... Trapezoid sheet 2 ... Conveyor 3 ... Turning shear 5 ... Reversing means 6 ... Supply means 7 ... Lifter 7a ... Cylinder 7b .. Rod 7c ... Supporting part 10 ... Press line 11 ... Base 12a ... Lower blade holder 12b ... Upper blade holder 13a ... Lower blade 13b ... Upper blade 14 ... Slide 15 ... Guide post 18 ... Bearing 21 ... Rotating part 22 ... (For reversing) Adsorption holding part 31 ... Center axis 32 ... Arm 33 ... (For supply) Adsorption Holding unit 100 ... sheet feeding device S1 ... idle stage S2 ... pressing device S3 ... balletizer X ... blanking press line X1 ... coil feeder X2 ... blanking / progressive press X 3 ... Pillar Y ... Transfer press line Y1 ... Destack feeder Y2 ... Three-dimensional transfer press Y3 ... Palletizer

Claims (6)

A conveyor for conveying the belt-like sheet body;
A rotating shear that alternately performs forward tilt cutting and reverse tilt cutting on the sheet body;
Among the trapezoidal sheets alternately formed and arranged on the conveyor by the both-side inclined cutting, and the trapezoidal sheet opposite to the trapezoidal sheet, the reverse trapezoidal sheet is reversed and the same direction as the trapezoidal sheet Reversing means to
Supply means for supplying trapezoidal sheets in the same direction to the press line;
A sheet supply apparatus comprising:   The sheet feeding device according to claim 1, wherein the reversing unit includes a rotatable rotating part and a suction holding part attached to the rotating part. Further comprising a lifter for raising the reverse trapezoidal sheet,
The sheet feeding apparatus according to claim 2, wherein the lifter lifts the trapezoidal sheet in the reverse direction and sucks the trapezoidal sheet on the suction holding unit.   A belt-shaped sheet body is conveyed by a conveyor, and the sheet body is alternately forwardly cut and reversely inclined by a swinging shear, whereby a trapezoidal sheet and a base opposite to the trapezoidal sheet are placed on the conveyor. A sheet supply method characterized by alternately forming and arranging shaped sheets and then inverting the trapezoidal sheets in the opposite direction so that all the trapezoidal sheets are oriented in the same direction and fed to the press line.   A press line, wherein the sheet feeding device according to claim 1 is connected.   6. The press line according to claim 5, further comprising a dandem press or a transfer press.

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