JP3747713B2 - Method and apparatus for preventing blocking of stacking blank - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a technique for preventing blank blocking in a stacking blank in which blanks for punching metal products are stacked.
[0002]
[Prior art]
Blanks used as blanks for punching small metal products with a press machine are usually cut from a large square blank plate into a strip-shaped intermediate plate 52 using a slitter, and many of the strip-shaped intermediate plates are cut out. As shown in FIG. 7, the stacker 54 is stacked to form a blank stacker 54, and the intermediate plate is sucked and pulled out from the lower part of the blank stacker and supplied to the press machine.
[0003]
【task to solve】
However, when the intermediate plates cut by the slitter are temporarily stacked and then sucked down by the vacuum cup one by one and separated and sent out, the intermediate plates are not peeled one by one and sent out two to three at a time. (Blocking may occur). As a result, the line stops and production efficiency deteriorates.
[0004]
For these reasons, it is desired to develop a technique for preventing the blocking of the stacking blank.
[0005]
The present invention has been made in view of the above circumstances, and is capable of smoothly performing blank separation with a stacker one by one, and preventing blocking of a stacking blank that can prevent line stop due to feeding a large number of sheets. Is intended to provide.
[0006]
[Means for Solving the Problems]
Corresponding to this object, the stacking blank blocking prevention method according to the present invention cuts out protrusions functioning as spacers between adjacent intermediate plates on the upper and lower sides of the stacked intermediate plates along the side edges. The intermediate plate is formed by plastic working, and the blocking between the upper and lower intermediate plates is prevented by the protrusions, and the intermediate plate is smoothly separated one by one , using a slitter from a blank large plate. When cutting the plate, attach a punch to the rotary cutter of the slitter, and along the cutting side edge on the intermediate plate between the upper and lower adjacent intermediate plates by plastic processing by the punch simultaneously with the cutting operation by the rotary cutter The protrusions are formed so as to have different positions .
In the stacking blank blocking prevention method of the present invention, the protrusions functioning as spacers between the intermediate plates adjacent to the upper and lower sides of the stacked intermediate plates are cut out at the edge portion of the intermediate plate by plastic working along the side edges. , Preventing the blocking of the intermediate plates overlapping the upper and lower by the protrusions, is a method of smoothly separating the intermediate plates one by one when cutting the intermediate plate using a slitter from a blank large plate, A punch is attached to the rotary cutter of the slitter, and the position along the cutting side edge on the intermediate plate is the same between the upper and lower adjacent intermediate plates by plastic processing by the punch simultaneously with the cutting operation by the rotary cutter. The protrusion is formed on the surface.
[0007]
Further, the stacking blank blocking prevention device according to the present invention is formed by forming a projection functioning as a spacer between the adjacent intermediate plates on the upper and lower sides of the stacked intermediate plate by plastic working along the side edge cut out at the edge of the intermediate plate. In addition, it is a device for preventing blocking of the intermediate plates overlapping the upper and lower sides by the protrusions and smoothly separating the intermediate plates one by one, and is 1 for a rotary cutter of a slitter that cuts out the intermediate plate from a large blank plate. It is characterized by comprising attach the punch to form the projections by plastic working pieces or more of the intermediate plate.
[0008]
【Example】
The details of the present invention will be described below with reference to the drawings showing an embodiment.
First, a stacking blank blocking prevention apparatus used when the stacking blank blocking prevention method of the present invention is implemented will be described.
[0009]
In FIG. 1, reference numeral 1 denotes an anti-blocking device for stacking blanks (hereinafter referred to as an anti-blocking device).
[0010]
The anti-blocking device 1 includes one or more punches 3 attached to a slitter 2 as main components.
[0011]
The slitter 2 includes a pair of cutter assemblies 4a and 4b that are positioned corresponding to the cut-out positions to be the side edges of the intermediate plate 32 with an interval corresponding to the width W of the intermediate plate 32 of the blank. The cutter assemblies 4a and 4b are composed of upper cutter assemblies 5a and 5b and lower cutter assemblies 6a and 6b, respectively.
[0012]
The upper cutter aggregates 5 a and 5 b have a rubber ring 7, a holder 8 and a cutter body 11 fixed concentrically and rotatably, and the cutter body 11 is attached to the holder 8. The lower cutter assemblies 6 a and 6 b have a cutter body 13 attached to the holder 12. The cutter bodies 11 and 13 have cutting edges 14 and 18 on the circumference.
[0013]
The punch 3 is attached to one side surface (the right side surface in FIG. 1) of the cutter body 11 of the upper cutter assemblies 5a and 5b. One punch 3 or a plurality of punches 3 are arranged on one side surface of the cutter body 11 at intervals in the circumferential direction, and are fixed to the cutter body 11 by screws 15. In the punch 3, the processing portion 16 at the tip protrudes outward in the radial direction from the cutting edge 14 of the cutter body 11.
[0014]
The punch 3 is attached to the other side surface (left side surface in the drawing) of the cutter body 13 of the lower cutter assemblies 6a and 6b. One punch 3 or a plurality of punches 3 are arranged on the outer surface of the cutter body 13 at intervals in the circumferential direction, and are fixed to the cutter body 13 by screws 17. In the punch 3, the processing portion 16 at the tip protrudes radially outward from the cutting edge 18 of the cutter body 13.
[0015]
Using the anti-blocking device 1 configured as described above, the anti-blocking method of the stacking blank of the present invention is performed as follows.
[0016]
A blank large plate 31 as shown in FIG. 4 is supplied to the slitter 2. In the slitter 2, the upper cutter assemblies 5 a and 5 b and the lower cutter assemblies 6 a and 6 b that are positioned vertically opposite to each other in the cutter assemblies 4 a and 4 b that are arranged to face the width of the intermediate plate 32. The cutter main bodies 11 and 13 cooperate to slit the blank large plate 31 along the cutting position 33 to cut out the intermediate plate 32. At the time of this cutting, the processed portion 16 of the punch 3 that protrudes outward from the cutter body 11 of the upper cutter assembly 5a is inside the slit side edge of the intermediate plate 32 at an interval corresponding to the mounting interval of the punch 3. The protrusion 19a which protrudes downward is formed by press plastic working. Further, the punch 3 of the cutter main body 13 of the lower cutter assembly 6b forms a protrusion 19b protruding upward on the inner side of the side edge portion on the opposite side of the intermediate plate 3.
[0017]
Further, the punch 3 of the lower cutter assembly 6a forms a projection 19c protruding upward on the left adjacent middle plate 32a. The punch 3 of the upper cutter assembly 5b forms a projection 19d that protrudes downward on the right adjacent middle plate 32b.
[0018]
When the intermediate plate 32 configured in this manner is stacked in a stacker, as shown in FIGS. 5 and 6, the protrusions 19 (19 a, 19 b...) Function as spacers in the upper and lower adjacent intermediate plates 32. Both middle plates are positioned apart by the height of the protrusion 19. When the position of the protrusion 19 is the same in the upper and lower middle plates 52, the upward protrusion 19 and the downward protrusion are overlapped and inserted, so that the protrusion 19 does not function as a spacer, but in an actual slitter Since the timing of supplying the large plate to the rotary cutter varies among the large plates, the position of the tip of the blank large plate 31 can vary. Are not formed at positions corresponding to the upper and lower middle plates, and the upward and downward protrusions are not completely fitted in the upper and lower middle plates, and the protrusion 19 can function as a spacer in all practical cases. .
[0019]
【The invention's effect】
According to the present invention, the projections 19 are formed on the intermediate plate, so that the blanking with the stacker can be performed smoothly one by one, and the line stop due to feeding a large number of sheets is eliminated. Further, in the anti-blocking device of the present invention, the protrusion can be formed simply by attaching the punch to the existing slitter, so that the implementation is very easy.
[0020]
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a configuration of an anti-blocking device 1. FIG. 2 is an explanatory diagram of a configuration of a cutter body 11, a is a cross-sectional view, b is a front view, FIG. b is a front view. FIG. 4 is a front explanatory view of a blank large plate. FIG. 5 is a perspective explanatory view showing a stacked intermediate plate. FIG. 6 is an enlarged explanatory view of a portion A in FIG. Perspective view showing the middle plate 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Blocking prevention apparatus 2 Slitter 3 Punch 4a, 4b Cutter assembly 5a, 5b Upper cutter assembly 6a, 6b Lower cutter assembly 7 Rubber ring 8 Holder 11 Cutter body 12 Holder 13 Cutter body 14 Cutting edge 15 Screw 16 Processing part 17 Screw 18 Cutting edge 19 Projection 31 Blank large plate 32 Middle plate 32 Cutting position 52 Middle plate 54 Blank stacker

Claims (4)

Protrusions that function as spacers between adjacent intermediate plates on the upper and lower sides of the intermediate plates to be stacked are cut out at the edge of the intermediate plate along the side edge by plastic working , and the intermediate plates that overlap the upper and lower sides by the protrusions are formed. to prevent blocking, a method for performing detachment of the middle plate smoothly one by one, when using a slitter from a blank large sheet cutting out the intermediate plate, to attach a punch to the rotary cutter of the slitter, the rotation The stacking blank is characterized in that the protrusions are formed so that positions along the cut-out side edge on the intermediate plate are different between upper and lower adjacent intermediate plates by plastic working by the punch simultaneously with the cutting operation by the cutter. Blocking prevention method. Protrusions that function as spacers between adjacent intermediate plates on the upper and lower sides of the intermediate plates to be stacked are cut out at the edge of the intermediate plate along the side edge by plastic working, and the intermediate plates that overlap the upper and lower sides by the protrusions are formed. It is a method to prevent blocking and to smoothly separate the middle plate one by one, and when the middle plate is cut out from a blank large plate using a slitter, a punch is attached to the slitting cutter of the slitter and the rotation is performed. Stacking characterized in that the protrusion is formed so that the position along the cut-out side edge on the intermediate plate is the same between the upper and lower adjacent intermediate plates by plastic working by the punch simultaneously with the cutting operation by the cutter. Blank blocking prevention method. Protrusions that function as spacers between adjacent intermediate plates on the upper and lower sides of the intermediate plates to be stacked are cut out at the edge of the intermediate plate along the side edge by plastic working, and the intermediate plates that overlap the upper and lower sides by the protrusions are formed. An apparatus for preventing blocking and smoothly separating the intermediate plates one by one, and the protrusions by plastic working on one or a plurality of the intermediate plates in a rotary cutter of a slitter that cuts out the intermediate plate from the blank large plate antiblocking device stacking blanks, characterized by comprising attach the punch to form a.   The rotary cutter has a cutting edge on the circumference, and one or more punches are arranged in the circumferential direction of the cutter, and each punch has a processing portion at the tip thereof than the cutting edge. 4. The anti-blocking device for a stacking blank according to claim 3, wherein the anti-blocking device for the stacking blank is protruded outward in the radial direction.

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