JP2014136278A - Punching scrap receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching scrap receiver that is mounted on a lower die of a stripping device, and when pushing down a push-down member of an upper die, enables falling thereof while making a scrap-receiving piece retreat to a body frame side smoothly.SOLUTION: A punching scrap receiver is characterized by: pivoting a scrap-receiving piece 12 to a body frame 1, turnably and vertically; rotatably pivoting a spring storage chamber 21 through a support shaft 14a; storing a spiral spring 22 in the spring storage chamber 21, and fixing an inner end 22a in the support shaft 14a and an outer end 22b in the spring storage chamber 21, respectively; turnably pivoting a connecting piece 25 at the one end and the other end in an intermediate part of the scrap-receiving piece 12 and the spring storage chamber 21; causing the scrap-receiving piece 12 to fall from an upper limit position, while being retreated to the side of the body frame 1, by the pushing down of a push-down member 31a of an upper die 31; and causing the spring storage chamber 21 to be turned through the connecting piece 25 in conjunction with it, and causing the spiral spring 22 to be turned and twisted in a winding direction against the restoring force.

Description

  The present invention is used by attaching to a lower mold of a stripping device in order to accelerate the removal when removing the punching waste generated in the process of punching a blank such as corrugated cardboard and paper container from a flexible raw material sheet in the stripping process. It relates to a punching waste receptacle.

  A stripping device in a stripping process is a flexible raw material sheet (hereinafter, referred to as a punched sheet) punched into a state where blanks and punched scraps are connected by a connecting portion having a minute width in the punching process. Due to the relative movement of the upper mold relative to the lower mold, the punching waste is pressed into the lower mold scraping hole by the protruding member suspended from the upper mold. , Thereby being broken and separated from the punched sheet, passing through the scrapping hole and discharged downward.

  In recent years, with the speeding up of the punching process, there is a demand for speeding up the stripping process downstream thereof, that is, reliable breaking separation and discharge at a high speed of punching waste.

  As a technique for accelerating the break separation and discharge of the punched scraps from the punched sheet, a number of punch scrap receivers that are disposed adjacent to the scrapping holes in the lower die of the stripping device have been reported. .

Many punching waste receptacles are generally provided in a lower die of a stripping device so as to be detachably fixed adjacent to the waste hole, and are provided on the main body frame so as to be vertically displaceable. Projecting from the frame into the lower mold scraping hole with the required maximum projecting length, retreating to the main body frame side when descending from the upper limit position, and the scrap receiving piece to the upper limit position Consisting of a scrap receiving piece biasing means for biasing in the return direction,
When stripping the punched sheet, the upper die dropping member and the scrap receiving piece are lowered against the urging force of the scrap receiving piece urging means while partially holding and grasping the punched scrap from above and below. In addition, the scrap receiving pieces are retracted toward the main body frame as they are lowered, and during the series of operations, the punching scraps are broken and separated from the punched sheet, and the punching scraps are clamped and gripped. In addition to being released, the punched waste passes through the lower die drop hole and is discharged downward, and after that, the scrap receiving piece becomes the waste receiving piece biasing means as the upper die dropping member rises. Can be raised and returned to the original upper limit position (see Patent Documents 1 and 2).

Japanese Patent No. 3472959 Table 2010-82626

  In the prior art described in Patent Document 1, the scrap receiving piece is pivotally attached to the main body frame so as to be pivotable in the vertical direction, and is held at the upper limit position by the magnetizing force of the magnet. As the urging force of the trash receiving piece urging means for returning the ascent, the restoring rotation moment due to the dead weight of the trash receiving piece pivotally attached to the main body frame is used, and a magnetic force is added to the restoring rotation moment in the final stage. .

  That is, in the above-described prior art, when the upper die dropping member and the scrap receiving piece are lowered while the punching scrap is partially clamped and gripped from above and below, the scrap receiving piece is held at the upper limit position immediately thereafter. Since the magnetic adhesion that has been performed is released and the holding pressure holding of the punching waste is easily released, there arises a problem that the punching waste from the punched sheet is likely to be broken and separated. Further, in the above prior art, when the scrap receiving piece rises and returns to the original upper limit position after the breakage and separation of the punched waste from the punched sheet, at the initial stage, as the biasing force of the scrap receiving piece biasing means, the main body Since the restoring rotational moment due to the dead weight of the scrap receiving piece pivotally attached to the frame is used, there arises a problem that the responsiveness is insufficient in the ascending / returning operation and delay is likely to occur.

  Moreover, in the prior art described in Patent Document 2, the scrap receiving piece is movable along a guide hole made of an inclined hole extending in the vertical direction in the main body frame, and the rising return to the original upper limit position of the scrap receiving piece. As an urging force of the trash receiving piece urging means, an elastic member comprising a spring disposed along the guide hole so as to act on the trash receiving piece is used.

  In the prior art, although the problems of the technique described in Patent Document 1 are partly solved, the inclination angle of the guide hole made of the inclined hole with respect to the horizontal line is optimally set according to the stripping condition. There was difficulty. That is, if the inclination angle of the guide hole made of the inclined hole with respect to the horizontal line is made too small, the waste receptacle will be moved during the inclination movement of the waste receptacle piece when it is pushed down (retreats toward the main body frame while descending). While it is possible to increase the amount of backward displacement toward the main body frame relative to the amount of downward displacement of the piece, the vertical length of the main body frame can be shortened, while the movement resistance increases, making it difficult to smoothly move the scrap receiving piece. Cause problems. On the other hand, if the inclination angle of the guide hole made of the inclined hole with respect to the horizontal line is too large, the movement resistance becomes small during the inclination movement of the waste receiving piece when the upper die-off member is pushed down. While the receiving piece can be smoothly inclined and moved, the backward displacement amount toward the main body frame with respect to the downward displacement amount of the waste receiving piece is reduced, so that the main body is secured to ensure the required backward displacement amount toward the main body frame side. The vertical length of the frame inevitably increases, and problems such as an overall increase in the size of the main body frame occur.

  The problem to be solved by the present invention is that in view of the problems of the prior art, the main body frame is kept small, and the amount of backward displacement toward the main body frame with respect to the downward displacement amount of the scrap receiving piece is a required sufficient length. It is an object of the present invention to provide a punching waste holder that can be easily secured only and can be lowered while the waste receiving piece is smoothly retracted toward the main body frame when the upper die protruding member is pushed down.

  The present invention provides a stamped waste receptacle that can solve the above-mentioned problems of the prior art.

A punching waste holder according to the first aspect of the present invention is provided on a lower die of a stripping device so as to be detachably fixed adjacent to the dust dropping hole, and to be vertically displaceable on the main body frame. A waste receiving piece protruding from the main body frame into the lower die dropping hole at the upper limit position with a required maximum overhang length and retreating to the main body frame side when descending from the upper limit position, and the waste receiving piece Consisting of a scrap receiving piece biasing means for biasing in the return direction to the upper limit position,
When stripping the punched sheet, the upper die dropping member and the scrap receiving piece are lowered against the urging force of the scrap receiving piece urging means while partially holding and grasping the punched scrap from above and below. In addition, the scrap receiving pieces are retracted toward the main body frame as they are lowered, and during the series of operations, the punching scraps are broken and separated from the punched sheet, and the punching scraps are clamped and gripped. In addition to being released, the punched waste passes through the lower die drop hole and is discharged downward, and after that, the scrap receiving piece becomes the waste receiving piece biasing means as the upper die dropping member rises. In the punching waste holder that is made to return to the original upper limit position by the urging force of
A scrap receiving piece is pivotally attached to the main body frame at a base end thereof so as to be pivotable in a vertical direction within a required angle range via a pivot shaft horizontally provided on the upper portion of the main body frame. A spiral spring is disposed parallel to the pivot shaft at a position away from the piece, and its inner end is fixed to the main body frame, and its outer end is rotatable along a predetermined track around the inner end. The connecting piece is fixed to the outer end guide member provided at the intermediate end of the scrap receiving piece and the outer end guide member via a connecting pin parallel to the pivot shaft at one end and the other end thereof. It ’s pivotally movable,
The scrap receiving piece is lowered from the upper limit position while retreating to the main body frame side by pushing down the upper die drop member, and the connecting piece swings in conjunction therewith, and the outer end guide member is connected to the connecting piece. It is characterized in that it is rotated through a piece, whereby the spiral spring is twisted in the winding direction against its restoring force.

  In the configuration according to claim 1, for example, as described in claim 2, the main body frame is provided with a support shaft in parallel with the pivot shaft at a position away from the scrap receiving piece, and the support A spring accommodating chamber is pivotally attached via a shaft, the spiral spring is accommodated in the spring accommodating chamber, an inner end thereof is fixed to the support shaft, and an outer end thereof is fixed to the spring accommodating chamber. In addition, it is preferable that the connecting piece is pivotally attached to the intermediate portion of the scrap receiving piece and the spring accommodating chamber via a connecting pin parallel to the pivot shaft at one end and the other end thereof.

  Moreover, in the said structure of Claim 2, for example, as described in Claim 3, it comprises a main body frame from the half case base part and the half case cover part complementarily fitted by it, The pivot shaft may be provided on the half case base, and the support shaft may be provided on the half case base or the half case lid.

  Moreover, in the said structure of Claim 2, for example, as described in Claim 4, it comprises a main body frame from the half case base part and the half case cover part complementarily fitted by it, The pivot shaft is provided on the half case base, a part of the support shaft is provided on one of the half case base and the half case cover, and the other is adjacent to a part of the support shaft on the same axis. The remaining portions of the support shafts facing each other are provided, and slits that can be aligned with each other are provided on a part of the support shafts and on the respective opposing surfaces of the remaining portions, and An inner end of the spiral spring can be fitted into the slit groove.

  According to the first aspect of the present invention, the scrap receiving piece is pivotally attached to the main body frame at the base end so as to be pivotable in the vertical direction, and the scrap receiving piece is urged in the returning direction to the upper limit position. As the urging means, the restoring force of the spiral spring is made to act directly on the scrap receiving piece via the connecting piece, so the main body frame is kept small and the main body with respect to the downward displacement amount of the scrap receiving piece The amount of backward displacement to the frame side can be easily secured by a required and sufficient length, and when the upper die protruding member is pushed down, the scrap receiving piece is lowered while being smoothly retracted to the main body frame side. Further, after the breakage and separation of the punched waste from the punched sheet, the scrap receiving piece can be immediately raised and returned to the original upper limit position.

  According to the invention which concerns on Claim 2, while using the spring accommodating chamber pivotally attached to the support shaft as an outer end guide member, the spiral spring is accommodated in the spring accommodating chamber, and the inner end of the spiral spring is accommodated. Since it is fixed to the support shaft and its outer end is fixed to the spring accommodating chamber, the restoring force of the spiral spring can be effectively applied to the scrap receiving piece, and the sheet to the spiral spring can be applied. Intrusion and adhesion of chips and paper dust can be reduced.

  According to the third aspect of the present invention, it is possible to effectively incorporate an operating mechanism including a scrap receiving piece, a connecting piece, a spring accommodating chamber, a spiral spring, and the like into the main body frame.

  Furthermore, according to the invention which concerns on Claim 4, while the operation | movement mechanism which consists of a waste-receiving piece, a connection piece, a spring accommodating chamber, a spiral spring, etc. can be effectively integrated in a main body frame, the inner end of the said spiral spring is attached. It can be effectively fixed to the support shaft.

1A and 1B are explanatory views showing an internal mechanism of a punching waste receiving device according to the present invention, in which FIG. 1A shows a state in which a waste receiving piece protrudes with a required maximum overhanging length at an upper limit position, and FIG. Each state shows that the piece is retracted to the minimum overhang length at the lower limit position. 2A and 2B are explanatory views showing the internal structure of the main body frame constituting the punched waste receptacle shown in FIG. 1, wherein FIG. 2A is a half case base and FIG. 2B is a complementary fit with the half case base. The internal structures of the halved case lids that can be combined are shown. FIGS. 3A and 3B are a front view and a plan view, respectively, of the punched waste receptacle shown in FIG. 4 (A) and 4 (B) are a left side view and a right side view, respectively, of the punched waste receptacle shown in FIG. FIG. 5 is an explanatory cross-sectional view showing a stripping device to which the punching waste holder shown in FIG. 1 is attached, and (A) is a state in which the waste receiving piece protrudes at a required maximum overhanging length at the upper limit position. ) Is a state where the scrap receiving piece descends while holding and gripping punched waste at the intermediate position in cooperation with the upper die-off member, and (C) is a state where the scrap receiving piece is retracted to the minimum overhang length at the lower limit position. Respectively.

The present invention will be specifically described below based on examples.
1-4, the main body frame 1 of the punching waste receptacle R according to the present invention comprises a half case base 1a and a half case lid 1b that can be complementarily fitted thereto, and the half case The base portion 1a and the half case lid portion 1b are formed by fitting protrusions 2 including a pair of claws projecting at a plurality of positions on the raised peripheral edge of the former inner surface, and the above-mentioned respective fitting protrusions on the raised peripheral edge of the latter inner surface. 2 can be joined by fitting with the fitting hole 3 drilled corresponding to 2. A rectangular mounting plate 4 protrudes from each outer surface of the half case base 1a and the half case lid 1b at a substantially intermediate height position, and mounting holes 5 are provided at two positions on the mounting plate 4. Is drilled.

  A pivot shaft 11 is projected horizontally in the upper part of the half case base 1a, and the scrap receiving piece 12 can be rotated in the vertical direction through the pivot shaft 11 within a required angle range. It is pivotally attached at its base end, and is positioned at the upper limit position by an upper stepped stopper 13 formed by the raised inner peripheral edge of the half case base 1a, and with a required maximum overhang length from the main body frame 1, The top surface of the tip is held horizontally to project.

  Further, in the half case base 1a, a first support shaft 14a protrudes in parallel with the pivot shaft 11 at a position away from the scrap receiving piece 12, and on the other hand, in the half case lid 1b. In addition, a second support shaft 14b that is adjacent to the first support shaft 14a on the same axis as the first support shaft 14a is projected when the half case base 1a and the half case cover 1b are joined, and the pivot shaft 11 A support hole 15 is formed in which the end portion of the support is fitted. Further, slot grooves 16a and 16b that can be aligned with each other are formed in the opposing surfaces of the first support shaft 14a and the second support shaft 14b, respectively.

  A cylindrical spring accommodating chamber 21 is rotatably slidably fitted in the first support shaft 14a of the half case base 1a in a guide hole 21a at the bottom thereof, and a spiral spring 22 is provided in the spring accommodating chamber 21. Contained. Further, a longitudinal groove 23 is bored at a required position on the inner surface of the side wall of the spring accommodating chamber 21, and a tab 24 projects from the outer surface of the side wall at the required position.

  The inner end 22a of the spiral spring 22 is fitted into the slits 16a and 16b on the opposing surfaces of the first support shaft 14a and the second support shaft 14b, and thereby the first support shaft 14a and the second support shaft 14b. The outer end 22b of the spiral spring 22 is fixed to the second support shaft 14b and is fitted into a vertical groove 23 provided on the inner surface of the side wall of the spring accommodating chamber 21, and thereby fixed to the spring accommodating chamber 21. ing.

  As described above, instead of the first support shaft 14a and the second support shaft 14b projecting on the coaxial line in the half-case base 1a and the half-case lid 1b, One support shaft may protrude from either the half case base 1a or the half case lid 1b. In this case, the inner end 22a of the spiral spring 22 is It may be fitted into a hole drilled in the support shaft, or may be wound non-rotatably on, for example, a rectangular columnar processed surface of the support shaft.

  A connecting piece 25 is rotatable at one end and the other end of the intermediate portion of the scrap receiving piece 12 and the tab 24 of the spring accommodating chamber 21 via connecting pins 26a and 26b parallel to the pivot shaft 11, respectively. It is pivotally attached to.

  In the above configuration, when the scrap receiving piece 12 is lowered while retracting from the upper limit position having the required maximum overhanging length as shown in FIG. As the connecting piece 25 swings, the spring accommodating chamber 21 rotates in the left direction in the figure via the connecting piece 25, so that the spiral spring 22 rotates in the winding direction against its restoring force. Finally, the scrap receiving piece 12 can be lowered while retracting to the main body frame 1 side to a lower limit position having a minimum overhanging length as shown in FIG. When the scrap receiving piece 12 is in the lower limit position, the side surface of the connecting piece 25 is brought into contact with the stepped stopper 27 formed by the cut-out side wall of the spring accommodating chamber 21, and thereby the above-mentioned The swing of the connecting piece 25 is stopped.

  When using the punching waste receptacle R having the above-described configuration, as shown in FIG. 5, the main body frame 1 has a rectangular cut in which the upper half of the main body frame 1 is formed in the side surface of the scrapping hole 32 a of the lower mold 32 in the stripping device S. While being fitted to a notch (not shown) and the mounting plate 4 being in contact with the lower surface of the lower mold 32, the lower mold 32 is fastened and fixed to the lower mold 32 through the mounting holes 5.

  In the stripping process, a flexible raw material sheet, that is, a punched sheet 34, punched between the upper mold 31 and the lower mold 32 of the stripping apparatus S is transferred, and the upper mold 31 is relatively relative to the lower mold 32. By the approaching operation, the punching scrap 34a is pressed downward into the scrapping hole 32a by the dropping member 31a suspended from the upper die 31, thereby being broken and separated from the punching processed sheet 34, and the scraping hole. It is discharged downward through 32a.

  In the initial state, the scrap receiving piece 12 is urged by the restoring force of the spiral spring 22 and is in the upper limit position, as shown in FIG. It overhangs with the overhang length.

  As shown in FIG. 5B, by pushing down the projecting member 31a, the scrap receiving piece 12 cooperates with the projecting member 31a to partially pinch and hold the punched scrap 34a from above and below, and While retreating to the main body frame 1 side, it is lowered from the upper limit position against the restoring force of the spiral spring 22, whereby the punching waste 34 a is broken and separated from the punching processed sheet 34.

  By further pushing down the drop-off member 31a, the scrap receiving piece 12 moves backward toward the main body frame 1 as the drop receiving piece 12 descends. Finally, as shown in FIG. The clamping pressure holding of the punching scrap 34a by 31a is released, and the punching scrap 34a is discharged downward through the scrapping hole 32a.

  After the discharge of the punching waste 34a, the scrap receiving piece 12 is raised and returned to the original upper limit position as shown in FIG. It is done.

  In the present embodiment, the scrap receiving piece 12 can be lowered to the lower limit position exhibiting the minimum overhanging length, as shown in FIG. As long as the release of the clamping pressure of the punched scrap 34a by the scrap receiving piece 12 and the dropping member 31a and the subsequent discharge of the punched scrap 34a below the scrapper hole 32a are achieved as described above, the scrap It is not necessary to lower the receiving piece 12 until it reaches the lower limit position.

  The present invention is not limited to the above-described embodiments, and many other various embodiments can be implemented by various modifications, combinations, and the like within the spirit and scope of the present invention. Needless to say.

R Punching waste holder S Stripping device 1 Body frame 1a Half case base 1b Half case lid 2 Fitting protrusion 3 Fitting hole 4 Mounting plate 5 Mounting hole 11 Pivoting shaft 12 Scrap receiving piece 13 Stepped stopper 14a First support shaft 14b Second support shaft 15 Support holes 16a, 16b Slotted groove 21 Spring accommodating chamber 21a Guide hole 22 Spiral spring 22a Inner end 22b Outer end 23 Vertical groove 24 Tab 25 Connecting piece 26a, 26b Connecting pin 27 Stepped shape Stopper 31 Upper mold 31a Drop-off member 32 Lower mold 32a Waste removal hole 33 Screw 34 Punched sheet
34a Punching waste

Claims (4)

A main body frame that is detachably fixed to the lower mold of the stripping device adjacent to the debris removal hole, and is provided on the main body frame so as to be vertically displaceable. From the main body frame to the lower mold debris removal hole at the upper limit position. With a waste receiving piece that protrudes with the required maximum overhang length and retracts toward the main body frame as it descends from the upper limit position, and a waste receiving piece that urges the waste receiving piece in the return direction to the upper limit position With the means of force,
When stripping the punched sheet, the upper die dropping member and the scrap receiving piece are lowered against the urging force of the scrap receiving piece urging means while partially holding and grasping the punched scrap from above and below. In addition, the scrap receiving pieces are retracted toward the main body frame as they are lowered, and during the series of operations, the punching scraps are broken and separated from the punched sheet, and the punching scraps are clamped and gripped. In addition to being released, the punched waste passes through the lower die drop hole and is discharged downward, and after that, the scrap receiving piece becomes the waste receiving piece biasing means as the upper die dropping member rises. In the punching waste holder that is made to return to the original upper limit position by the urging force of
A scrap receiving piece is pivotally attached to the main body frame at a base end thereof so as to be pivotable in a vertical direction within a required angle range via a pivot shaft horizontally provided on the upper portion of the main body frame. A spiral spring is disposed parallel to the pivot shaft at a position away from the piece, and its inner end is fixed to the main body frame, and its outer end is rotatable along a predetermined track around the inner end. The connecting piece is fixed to the outer end guide member provided at the intermediate end of the scrap receiving piece and the outer end guide member via a connecting pin parallel to the pivot shaft at one end and the other end thereof. It ’s pivotally movable,
The scrap receiving piece is lowered from the upper limit position while retreating to the main body frame side by pushing down the upper die drop member, and the connecting piece swings in conjunction therewith, and the outer end guide member is connected to the connecting piece. A punching waste holder characterized in that it is rotated through a piece so that the spiral spring is twisted in the winding direction against its restoring force.   2. The punched scrap receptacle according to claim 1, wherein a support shaft is provided in parallel to the pivot shaft at a position away from the scrap receiving piece on the main body frame, and a spring accommodating chamber can be rotated via the support shaft. The spiral spring is accommodated in the spring accommodating chamber, the inner end thereof is fixed to the support shaft, and the outer end thereof is fixed to the spring accommodating chamber, and the intermediate portion of the scrap receiving piece and A punching waste holder in which a connecting piece is pivotally attached to the spring accommodating chamber at one end and the other end via a connecting pin parallel to the pivot shaft.   3. The punching waste holder according to claim 2, wherein the main body frame is constituted by a half case base and a half case lid fitted in a complementary manner thereto, and the pivot shaft is provided on the half case base. The punching waste receptacle which provided the said support shaft in the said half case base part or the said half case cover part.   3. The punching waste holder according to claim 2, wherein the main body frame is constituted by a half case base and a half case lid fitted in a complementary manner thereto, and the pivot shaft is provided on the half case base. A part of the support shaft is provided on one of the half case base and the half case cover, and the other part of the support shaft is provided on the other side of the support shaft so as to be adjacent to the part of the support shaft. Slot grooves that can be aligned with each other are provided on a part of the shaft and the opposing surfaces of the remaining part, and an inner end of the spiral spring is provided in the slot of the part of the aligned support shaft and the opposing part of the remaining part. Fitting punching waste receptacle.

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