JP6061193B2 - Blank stripper mechanism - Google Patents

Description

  The present invention relates to a blank stripper mechanism for separating a blank portion from a blank for producing, for example, a paper container or the like.

  Conventionally, printed blanks are produced, for example, to produce paper containers and the like. Such blanks are folded along the creases in a later step.

  Generally, a printed blank is first printed on a sheet-like blank, and a sheet-like blank including a plurality of product portions and blank portions between product portions is produced from the printed sheet-like blank. Next, the blank portion of the sheet-like blank is separated from the product portion by the stripper mechanism to obtain the product portion.

  The stripper mechanism includes a blank conveyance unit that conveys a blank, and a pin drum that has pins inserted into the blank part in order to separate the blank portion from the blank product portion conveyed by the blank conveyance unit. By inserting into the part, the blank part is separated from the product part.

  By the way, the blank conveyance section has a plurality of feed rollers and a belt stretched between the feed rollers, and this belt is generally wound around a pin drum.

  In such a case, when the blank portion of the blank is separated from the product portion by the pin drum, the blank portion may be wound around the belt.

JP-A-61-50797

  The present invention has been made in consideration of such points, and when the blank portion of the blank is separated from the product portion, the blank portion can reliably prevent the blank portion from being wound around the belt of the blank conveyance portion. An object of the present invention is to provide a stripper mechanism.

  The present invention relates to a blank transport section that transports a blank having a plurality of product sections and a blank section provided in the product section via a connecting section, and a pin that is inserted into a blank section of the blank transported by the blank transport section A pin drum having an outer periphery and an anvil roller that sandwiches the blank between the pin drum and breaks the connecting portion and separates the blank portion from the product portion, and the blank transport portion is located above the blank. And a lower blank transport unit located below the blank, the lower blank transport unit has a plurality of lower feed rollers, and a plurality of lower belts spanned between the lower feed rollers and the pin drum, The margin portion is continuously provided via a main margin portion including a conveyance direction portion and a width direction portion, and a separation line located on the lower belt in the width direction portion of the main margin portion. And a sub-margin portion located between the lower belts and a punching blank portion provided independently between the conveyance direction portions of the main margin portion, and the main margin of the margin portion is disposed on the outer periphery of the pin drum. A scraper having an inner peripheral surface corresponding to the outer periphery of the pin drum is disposed in contact with the side edge of the width direction portion of the portion or the side margin of the sub-margin portion and lifting them up to prevent the lower belt from being caught. A stripper mechanism for a blank having a wide width portion and a wide portion that gradually increases from the width detail and that abuts against the widthwise portion of the main margin portion and the side margin portion side edge and lifts it up It is.

  The present invention is a blank stripper mechanism characterized in that the scraper has a thin-walled portion narrower than a wide portion while a blanking blank portion is inserted into an inner peripheral surface side thereof.

  The present invention is the blank stripper mechanism characterized in that the sub-margin portion of the margin portion is located in the center portion in the width direction between the lower belts.

  The present invention is the blank stripper mechanism in which the scraper is arranged at the same position in the width direction as the lower belt.

  The present invention relates to a scraper disposed on an outer periphery of a pin drum having pins inserted into a blank portion of the blank on the outer periphery, the margin portion including a main margin portion including a conveyance direction portion and a width direction portion, and a width of the main margin portion. Punching blanks provided continuously in the direction portion via a separation line located on the lower belt and independently provided between the sub-margin portion located between the lower belt and the conveyance direction portion of the main margin portion The scraper has an upstream width detail and a wide width part that gradually increases from the width detail and abuts against the width direction part of the main margin part or the side edge of the sub margin part and lifts it up. It is a scraper characterized by having.

  As described above, according to the present invention, of the blank portion separated from the blank product portion, the width direction portion of the main blank portion and the side edge of the sub blank portion are brought into contact with the wide portion of the scraper and held. Thus, it is possible to reliably prevent the width direction portion of the main margin portion and the sub margin portion from being wound around the belt of the blank conveyance portion.

FIG. 1 is an overall view showing a blank manufacturing system in which a blank stripper mechanism according to the present invention is incorporated. FIG. 2 is a side view showing a blank stripper mechanism according to the present invention. FIG. 3 is a diagram showing a positional relationship between a blank portion of a sheet-like blank and a lower belt. 4A is a front view showing the scraper, FIG. 4B is a side view thereof, and FIG. 4C is a plan view thereof. FIG. 5 is a perspective view showing a blank portion lifted by a scraper. 6 is an enlarged view of a portion A in FIG. Fig.7 (a) is a front view which shows the modification of a scraper, FIG.7 (b) is the side view. FIG. 8 is a view showing a modification of the sheet-like blank.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 to FIG. 6 are diagrams showing an embodiment of the present invention.

  First, the entire blank manufacturing system in which the blank stripper mechanism according to the present invention is incorporated will be described with reference to FIG.

  As shown in FIG. 1, the blank manufacturing system 11 winds a sheet-like blank S extending in a printed strip shape, and feeds the sheet-like blank S from a paper feeding unit 12 and a paper feeding unit 12. The printing state detection unit 13 for detecting the appropriateness of the printing state of the sheet-like blank S, the sheet conveyance unit 14 for conveying the sheet-like blank S, and the sheet-like blank S conveyed by the sheet-like conveyance unit 14 are struck with a platen. The punching part 15 which extracts and produces the sheet-like blank 5 (refer FIG. 3) is provided. In addition, the sheet-like blank 5 may be conveyed from the paper supply unit 12, and the platen may be a rotary die cutter.

  Further, on the downstream side of the punching unit 15, a sheet feeding unit 16 including a conveyor that transports the sheet-like blank 5 is provided, and on the downstream side of the sheet feeding unit 16, the product part 1 and the blank part are provided. A stripper mechanism 17 according to the present invention for separating the two is provided. A defective product part discharge system 10 for discharging the defective product part to the outside is disposed downstream of the stripper mechanism 17, and the non-defective product part sorted by the defective product part discharge system 10 is then the product part transport part. 18 is transferred to the next process. In addition, the conveyance speed of the product part 1 is 120-210 m / min.

  In addition, the sheet feeding unit 12, the printing state detecting unit 13, the sheet conveying unit 14, the punching unit 15, the sheet conveying unit 16, the stripper mechanism 17, the defective product unit discharge system 10 and the product unit conveying unit 18 Is also connected to the control unit 19 and driven and controlled by the control unit 19.

  Among these, the printing state detection unit 13 detects the suitability of the printing state of the sheet blank S that is unwound from the paper supply unit 12. Can be detected.

  Specifically, the printing state detection unit 13 detects the printing state, dirt, foreign matter, and the like applied to the product unit 1 in the sheet-like blank S, and sends the detection result to the control unit 19.

  The printing state detection unit 13 is provided between the paper feeding unit 12 and the sheet conveyance unit 14, and the printing state detection unit 13 is not limited to the case where the printing state detection unit 13 detects the sheet-like blank S. The printing state detecting unit 13 detects the printing state, dirt, foreign matter, etc. of the sheet-like blank 5 produced by the punching unit 15, and the detection result is used as a control unit. 19 may be sent.

  The punching unit 15 punches the sheet-like blank S to produce the sheet-like blank 5.

  Here, with reference to FIG. 3 and FIG. 6, the single wafer blank 5 formed by punching the sheet blank S will be described.

  As shown in FIGS. 3 and 6, the sheet-like blank 5 has a product portion 1 and a blank portion 2 formed between the product portions 1. Moreover, each product part 1 and the margin part 2 are mutually connected through the some connection part 3, and each product part 1 and the margin part 2 can be isolate | separated completely by breaking the connection part 3. FIG.

  That is, the sheet-like blank 5 having the product part 1 and the blank part 2 produced in the punching part 15 is sent to the stripper mechanism 17, and the connecting part 3 is broken in the stripper mechanism 17 so that each product part is cut. 1 is separated from the margin 2. Here, the shape and length of the connecting portion 3 are not limited to those shown in FIGS. 3 and 6, and the shape and length can be arbitrarily changed.

  By the way, each product part 1 separated from the blank part 2 in the stripper mechanism 17 includes a non-defective product part with an appropriate printing state and a defective product part with an inappropriate printing state. The non-defective product part discharge system 10 discharges to the outside, and only the remaining non-defective product part is sent to the next process via the product part transport unit 18 including a conveyor.

  Next, the stripper mechanism 17 according to the present invention will be described with reference to FIG. As shown in FIG. 2, the stripper mechanism 17 includes an inlet portion 17 a, an outlet portion 17 b, a blank conveyance portion 20 that conveys the sheet-like blank 5 and the product portion 1, and a plurality of pieces inserted into the blank portion 2 of the sheet-like blank 5. A pin drum 30 having pins 31 on the outer periphery and an anvil roller 35 that breaks the connecting portion 3 while holding the sheet blank 5 between the pin drum 30 and feeding the sheet blank 5 are provided. A recess 36 into which the pin 31 of the pin drum 30 enters is provided on the outer periphery of the anvil roller 35.

  Furthermore, the pin 31 of the pin drum 30 is held by a pin holding portion 31 a provided on the outer periphery of the pin drum 30 so as to be movable in the radial direction. That is, a cam mechanism (not shown) is provided inside the pin drum 30, and when the pin 31 comes to the upper end of the pin drum 30 by this cam mechanism, the pin 31 held by the pin holding portion 31 a protrudes radially outward from the pin drum 30. It is like that. Then, as the pin 31 moves from the upper end to the lower end of the pin drum 30 by the rotation of the pin drum 30, the pin 31 held by the pin holding portion 31a is pulled inward, and further, the pin 31 moves from the lower end to the upper end of the pin drum 30. The pin 31 held by the pin holding portion 31a again protrudes radially outward from the pin drum 30. When the pin 31 is pulled inward in the radial direction, the blank portion 2 is detached from the pin 31.

  The pin drum 30 is driven by a drive motor 33, and the drive motor 33 is controlled by the control unit 19. The pin drum 30 may be driven in conjunction with another unit via a driving gear (not shown).

  By the way, the blank conveyance part 20 which conveys the sheet-like blank 5 and the product part 1 is the upper blank conveyance part 21 located above the sheet-like blank 5, and the lower blank conveyance part 22 located below the sheet-like blank 5. have.

  Among these, the upper blank conveyance section 21 has a plurality of upper feed rollers 21a and 21a, and an upper belt 21b stretched over the upper feed rollers 21a and 21a.

  The lower blank conveyance unit 22 includes an inlet feed roller 24a, an outlet feed roller 24b, and a pair of lower feed rollers 22a and 22a provided between the outlet feed roller 24b and the pin drum 30. The lower belt 22b is wound around the inlet feed roller 24a, the outlet feed roller 24b, the pair of lower feed rollers 22a and 22a, and the pin drum 30.

  Until passing through the pin drum 30, the sheet-like blank 5 is conveyed by the lower belt 22 b of the lower blank conveyance unit 22. Further, the product section 1 is sandwiched between the upper belt 21b of the upper blank transport section 21 and the lower belt 22b of the lower blank transport section 22, and the product section 1 is transported.

  In this way, the blank portion 2 is separated from the product portion 1 of the single-sheet blank 5 by the pin drum 30 and the anvil roller 35 while the single-sheet blank 5 is conveyed by the lower blank conveyance section 22.

  Further, a scraper 25 is disposed on the outer periphery of the pin drum 30 so as to contact the side edge of the blank portion 2 and lift the side edge of the blank portion 2. Then, the scraper 25 lifts side edges of the width direction part 2B and the sub margin part 2b of the main margin part 2a, which will be described later, out of the margin part 2, so that the width direction part 2B and the sub margin part 2b of the margin part 2 are It is possible to prevent winding between the lower belt 22b and the pin drum 30 after passing through the lower feed roller 22a on the pin drum 30 side of the lower blank conveyance unit 22.

  Next, the positional relationship between the blank portion 2 of the sheet blank 5 and the lower belt 22b will be described with reference to FIGS. 3 and 6 are plan views of the positional relationship between the sheet blank 5 before passing through the pin drum 30 and the lower belt 22. For the sake of clarity, the upper blank transport unit 21, the lower blank transport unit 22 other than the lower belt 22b, the pin drum 30, and the anvil roller 35 are omitted from illustration, and the sheet blank 5 is shown as a transparent body for convenience. .

  As shown in FIG. 3 and FIG. 6, the sheet-like blank 5 is divided into eight regions in the width direction by a plurality of main margin portions 2 a including a conveyance direction portion 2 </ b> A formed along the conveyance direction (arrow L direction). Each region is divided into upstream and downstream sides along the conveyance direction by a separation line 4 that is partitioned and further extends in the width direction, and has a total of 16 product parts 1.

  In addition, a pair of lower belts 22b is arranged for each product section 1 partitioned in the width direction and the conveyance direction. For this reason, a total of 16 lower belts 22b are provided for one sheet-like blank 5. The lower belt 22b is located below the sheet-like blank 5.

  The main margin portion 2a includes a width direction portion 2B connected to the conveyance direction portion 2A, and the sub margin portion 2b is orthogonal to the conveyance direction via a separation line 6 in the width direction portion 2B of the main margin portion 2a ( (In the width direction). That is, the width direction portion 2B of the main margin portion 2a and the sub margin portion 2b are separated from each other via the separation line 6.

  Further, each product portion 1 of the sheet-like blank 5 is formed with a blanking blank portion 2c at the center portion in the width direction via the connecting portion 3. Further, the sub-blank portion 2b of the sheet-like blank 5 is also formed at the center in the width direction of each product portion 1, and a pair of lower belts 22b and 22b provided for each product portion 1 are in the width direction of the product portion 1. It is arranged on the left and right sides with respect to the center line l.

  For this reason, in each product part 1, the sub blank part 2b and the punching blank part 2c are both on the center line 1 in the width direction of the product part 1, and the sub blank part 2b and the punching blank part 2c are a pair. It is located in the center in the width direction between the lower belts 22b and 22b.

  Here, the blanking blank portion 2c is provided, for example, for forming a window portion for visually recognizing the contents accommodated in the packaging container. However, the blanking blank portion 2c is not limited to the window portion.

  Among the above, the main blank portion 2a including the conveyance direction portion 2A and the width direction portion 2B of the sheet-like blank 5, the sub blank portion 2b extending in the width direction, and the blank portion 2c constitute the blank portion 2.

  As shown in FIG. 3, a separation line 2D is formed at the center of the conveyance direction portion 2A of the main margin 2a, and the conveyance direction portion 2A is separated into an upstream side and a downstream side by the separation line 2D.

  In FIG. 3, pin positions 31d into which the pin drums 31 are inserted are shown in the main margin 2a, the sub margin 2b, and the punching margin 2c including the conveyance direction portion 2A and the width direction portion 2B. .

  Further, the pin drum 30 is formed by lifting the width direction portion 2B of the main margin portion 2a and the sub margin portion 2b of the margin portion 2 separated from the product portion 1 of the sheet blank 5 by the pin drum 30 and the anvil roller 35 on the outer periphery of the pin drum 30. A scraper 25 is provided to prevent winding between the lower belt 22b and the pin drum 30 after passing through the lower feed roller 22a on the 30 side.

  Here, the scraper 25 is provided in the same width direction position as each lower belt 22b among the 16 lower belts 22b installed with respect to the sheet blank 5.

  For this reason, the same number of 16 scrapers 25 are provided for the lower belt 22 provided for 16 pieces of the sheet-like blank 5.

  As shown in FIGS. 4A and 4B, each scraper 25 has a width detail 27 on the upstream side as viewed from the front, and a wide portion 26 that gradually increases in width from the width detail 27. As for the width direction part 2B and the sub margin part 2b of the main blank part 2a of the sheet-like blank 5, each side edge first contacts the width detail 27 of the scraper 25, and then gradually shifts from the width detail 27 to the wide part 26. Thus, it is possible to prevent the width direction portion 2B of the main margin portion 2a and the sub margin portion 2b from being caught between the lower belt 22b and the pin drum 30 after passing through the lower feed roller 22a on the pin drum 30 side. .

  Each scraper 25 has an arc-shaped inner peripheral surface 25a as shown in FIGS. 4 (a) and 4 (b), and the inner peripheral surface 25a is provided in contact with or close to the pin drum 30. ing. Here, the proximity means a state where the distance between the scraper 25 and the pin drum 30 is less than the thickness of the product portion 1. Each scraper 25 is provided so as to cover an area that is downstream from the center of the pin drum 30 in the conveying direction of the single wafer bun-rack 5 and does not contact the lower belt 22b of the pin drum 30.

  Furthermore, the narrow portion 27 of each scraper 25 is located on the upstream side in the conveyance direction of the sheet blank 5 and the wide portion 26 is located on the downstream side.

  In this case, the side edges of the width direction portion 2B and the sub margin portion 2b of the main margin portion 2a correspond to the separation lines 6, and the separation line of the width direction portion 2B and the sub margin portion 2b of the main margin portion 2a. The side edges formed by 6 can be lifted by the width detail 27 and the wide portion 26 of the scraper 25.

  Next, the material of the scraper 25 will be described. The scraper 25 has an arc-shaped inner peripheral surface, and can be manufactured, for example, by subjecting a plate-like body to cutting such as lathe or slicing.

  It is preferable that the scraper 25 is higher in rigidity than the single-wafer blank 5 so that the scraper 25 does not deform even when the blank portion 2 comes into contact. Further, when the scraper 25 is disposed so as to contact the pin drum 30, it is preferable that the scraper 25 has a lower rigidity than the pin drum 30 in order to prevent the rotation of the pin drum 30.

  As a material of the scraper 25, an engineering plastic is preferable. Examples of the engineering plastic include POM (polyoxymethylene), PA (polyamide), PC (polycarbonate), PBT (polybutylene terephthalate), and the like.

  When the scraper 25 is disposed so as to come into contact with the pin drum 30, it is preferable that the diameter of the arc of the inner peripheral surface 25 a of the scraper 25 be smaller than the outer diameter of the pin drum 30. In this case, the scraper 25 is scraped by the pin drum 30 by use, and the outer diameter of the pin drum 30 and the diameter of the arc of the inner peripheral surface 25a of the scraper 25 become substantially the same, so the effect of the present invention can be improved.

  Moreover, the thickness of the wide part 26 of the scraper 25 can be 11-18 mm, for example, and a thin part can be 8 mm.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, as shown in FIG. 1, the printed sheet-like blank S is wound around the sheet feeding unit 12, and the sheet-like blank S is unwound from the sheet feeding unit 12.

  Next, in the printing state detection unit 13, whether or not the printing state of the sheet blank S unwound from the paper feeding unit 12 is detected is detected, and the sheet blank S is conveyed by the sheet conveyance unit 14.

  As described above, the printing state detection unit 13 detects whether or not the printing state of the sheet-like blank S unwound from the paper feeding unit 12 is appropriate. In this case, the printing state detection unit 13 may detect not only the printing state of the sheet blank S, but also the dirt, foreign matter, and the like of the sheet blank S.

  Specifically, the printing state detection unit 13 detects the printing state, dirt, foreign matter, and the like applied to the blank 1 that is the product portion of the sheet blank S, and sends the detection result to the control unit 19.

  Next, the sheet-like blank S conveyed by the sheet conveying unit 14 is sent to the punching unit 15.

  Then, in the punching part 15, the sheet-like blank S is punched and the sheet-like blank 5 is obtained.

  As shown in FIG. 3, the sheet-like blank 5 is divided into eight in the width direction, and a total of sixteen product parts 1 divided into two on the upstream side and the downstream side along the transport direction, and the product part It has a main margin 2a and a sub margin 2b formed between the two. Further, each product portion 1 is connected to the main margin portion 2a and the sub margin portion 2b via the connecting portion 3, and the width direction portion 2B and the sub margin portion 2b of the main margin portion 2a are separated from each other via the separation line 6. Yes.

  Further, a punching blank portion 2 c is formed in each product portion 1 via a connecting portion 3. In this case, the blank portion 2 is formed by the main blank portion 2a including the conveyance direction portion 2A and the width direction portion 2B, the sub blank portion 2b, and the punching blank portion 2c.

  The sheet-like blank 5 having the product part 1 and the blank part 2 produced in the punching part 15 is sent to the stripper mechanism 17. And in this stripper mechanism 17, the connection part 3 is fractured | ruptured, each product part 1 is isolate | separated from the blank part 2, and the product part 1 is obtained in this way.

  Next, the operation of the stripper mechanism 17 will be described below with reference to FIGS.

  First, the sheet-like blank 5 enters the stripper mechanism 17 from the sheet conveyance unit 16 through the inlet portion 17a, and is conveyed between the pin drum 30 and the anvil roller 35 by the lower blank conveyance unit 22 of the blank conveyance unit 20. The sheet-like blank 5 is sandwiched between the pin drum 30 and the anvil roller 35 during this time.

  In this case, the pin 31 provided on the outer periphery of the pin drum 30 is inserted into the blank portion 2 of the sheet-like blank 5, and the pin 31 of the pin drum 30 enters the recess 36 of the anvil roller 35.

  At this time, the connecting portion 3 of the sheet-like blank 5 is broken to separate the blank portion 2 from the product portion 1 of the sheet-like blank 5, and the product portion 1 is between the pin drum 30 and the anvil roller 35, and the blank transport portion 20. Is sent downstream. The product portion 1 is sent to the defective blank discharge system 10 through the outlet portion 17b, and the blank portion 2 is sent to the lower side of the pin drum 30 as the pin drum 30 rotates.

  During this time, as the pin drum 30 rotates, the pin 31 is pulled inward in the radial direction, whereby the pin 31 is pulled out from the blank portion 2, and the blank portion 2 is then dropped from the pin drum 31 into the blank portion accumulating device 40. Then, it is accumulated in the margin part accumulating device 40.

  Further, the width direction portion 2B and the sub margin portion 2b of the main margin portion 2a of the margin portion 2 are prevented from being wound between the lower belt 22b and the pin drum 30 by being lifted by the scrapers 25.

  Next, the action of lifting the width direction portion 2B of the main margin 2a and the side edge 6 of the sub margin 2b by the scraper 25 will be described with reference to FIG.

  Here, FIG. 5 shows a state in which the width direction portion 2B of the main margin 2a is lifted by the scraper 25, and the illustration of the sub margin 2b is omitted for convenience. In FIG. 5, a through hole 31c of the pin 31 is shown in the main margin 2a.

  As shown in FIG. 5, the width direction portion 2B of the main margin portion 2a and the side edge (separation line) 6 of the sub margin portion 2b first contact the width details 27 of each scraper 25, and the width direction portion of the main margin portion 2a. The side edges 6 of 2B and the sub margin 2b are shifted from the width detail 27 to the wide portion 26 and gradually lifted. Further, as described above, each scraper 25 is provided at the same position in the width direction as the lower belt 22 b of the lower blank conveyance unit 22.

  Therefore, the width direction portion 2B and the sub margin portion 2b of the main margin portion 2a, which is in contact with the width detail 27 and the wide portion 26 of the scraper 25 and whose side edge 6 is lifted, pass through the lower feed roller 22a on the pin drum 30 side. It is not wound between the rear lower belt 22b and the pin drum 30.

  In this way, the product part 1 separated from the blank part 2 in the stripper mechanism 17 is obtained. The product part 1 obtained in the stripper mechanism 17 includes a non-defective product part with an appropriate printing state and a defective product part with an inappropriate printing state. It is necessary to discharge to the outside.

  That is, the product part 1 is sent from the outlet part 17 b of the stripper mechanism 17 into the defective product part discharge system 10.

  In this case, a signal from the printing state detection unit 13 is input to the control unit 19, and the control unit 19 distinguishes each product unit 1 into a good product unit and a defective product unit based on the signal from the printing state detection unit 13. These are specified.

  Next, the control unit 19 separates the defective product part from the non-defective product part in the defective product part discharge system 10.

  In this way, the defective product part is separated from the non-defective product part, and only the good product part is sent from the product part transport unit 18 to the next process.

  As described above, according to the present embodiment, when the blank portion 2 of the sheet-like blank 5 is separated from the product portion 1, the width direction portion 2B of the main margin portion 2a of the margin portion 2 and the sub-margin portion 2b. The side edges can be lifted by the wide portion 26 of the scraper 25. For this reason, the blank portion 2 is not wound between the lower belt 22b and the pin drum 30 after passing through the lower feed roller 22a on the pin drum 30 side of the lower blank transport portion 22.

The modification then 7 describes a variation of the scraper 25. In the embodiment shown in FIGS. 1 to 6, the scraper 25 has an example having an upstream width detail 27 and a wide portion 26 whose width gradually increases from the width detail 27. As shown in (b), the scraper 25 has an upstream width detail 27, a wide portion 26 that gradually increases in width from the width detail 27, and a thin portion 28 that is located on the inner peripheral surface side of the wide portion 26. You may do it.

  That is, the scraper 25 has an arcuate inner peripheral surface 25a. Further, in the scraper 25, the blank portion 2 c of the blank portion 2 enters the inner peripheral surface side 25 a of the wide portion 26, and a thin portion 28 narrower than the wide portion 26 is formed. As described above, the blank portion 2 is formed in the sheet blank 5, and the blank portion 2 c of the blank portion 2 is also separated from the product portion 1 by the pin drum 30 and the anvil roller 31. In this case, when the shape of the blanking blank portion 2 c is large enough to reach the scraper 25, the blanking blank portion 2 c is accommodated in the thin wall portion 28 formed on the inner peripheral surface side of the scraper 25, thereby punching blank space. The portion 2c does not jump out or is wound around the lower belt 22b on the downstream side (see FIG. 7).

  Next, a modified example of the blank will be described with reference to FIG. In the embodiment shown in FIG. 1 to FIG. 6, the blank portion 2 is formed in the sheet-like blank 5, and the blank portion 2 has a conveyance direction portion 2 </ b> A and a width direction portion 2 </ b> B connected to the conveyance direction portion 2 </ b> A. Although the example which has the margin part 2a was shown, 2 A of conveyance directions and the width direction part 2B do not necessarily need to be connected.

  That is, in the embodiment shown in FIG. 3 and FIG. 6, the transport method part 2A and the width direction 2B are connected to each other to form an L shape, but as shown in FIG. The width direction portions 2B may be separated from each other via the separation line 2E.

  Moreover, in each said embodiment, although the stripper mechanism 17 showed the example which isolate | separated the margin part 2 from the product part 1 of the sheet-like blank 5, the continuous sheet-like blank was used instead of the sheet-like blank 5, and a stripper was used. The mechanism 17 may separate the product portion and the blank portion of the continuous sheet-like blank.

  Furthermore, in each of the above-described embodiments, an example in which a pair of lower belts 22b is arranged corresponding to each product portion 1 is shown. However, the present invention is not limited to this, and one lower belt 22b of the pair of lower belts 22b is transported. May be replaced. The conveyance guide refers to a guide rail, and is provided between the pin drum 30 and the outlet feed roller 24b so as to support the product section 1 from below.

DESCRIPTION OF SYMBOLS 1 Product part 2 Margin part 2a Main margin part 2A Conveying direction part 2B Width direction part 2b Submargin part 2c Punching blank part 2D Separation line 2E Separation line 3 Joint part 4 Separation line 5 Sheet-fed blank 6 Separation line 10 Defective product Part discharge system 12 Paper feed part 13 Print state detection part 14 Sheet conveyance part 15 Punching part 16 Sheet-fed conveyance part 17 Stripper mechanism 18 Product part conveyance part 19 Control part 20 Blank conveyance part 21 Upper blank conveyance part 21a Upper feed roller 21b Upper belt 22 Lower blank conveying portion 22a Lower feed roller 22b Lower belt 24a Inlet feed roller 24b Outlet feed roller 25 Scraper 26 Wide portion 27 Wide details 28 Thin portion 30 Pin drum 31 Pin 31a Pin holding portion 31d Pin insertion position 33 Drive motor 35 Anvil Roller 36 recess

Claims (5)

A blank transport section for transporting a blank having a plurality of product sections and a blank section provided on the product section via a connecting section;
A pin drum having a pin inserted into a blank margin of the blank transported by the blank transport unit on the outer periphery;
An anvil roller that holds the blank between the pin drum and breaks the connecting portion to separate the blank portion from the product portion,
The blank transport unit is composed of an upper blank transport unit positioned above the blank and a lower blank transport unit positioned below the blank.
The lower blank conveyance unit has a plurality of lower feed rollers, and a plurality of lower belts spanned between the lower feed rollers and the pin drum,
The margin portion is provided continuously with a main margin portion including a conveyance direction portion and a width direction portion, and a width direction portion of the main margin portion via a separation line located on the lower belt, and is positioned between the lower belts. A sub-margin portion, and a blanking portion provided independently between conveyance direction portions of the main margin portion,
An inner circumference corresponding to the outer circumference of the pin drum while preventing the winding of the lower belt by abutting against the width direction portion of the main margin portion or the side margin of the sub margin portion of the margin portion and lifting them up on the outer circumference of the pin drum A scraper having a surface is arranged,
The scraper has an upstream width detail, and a wide portion that gradually increases in width from the width detail, and has a wide portion that abuts and lifts the width direction portion of the main blank portion and the side margin portion side edge. Blank stripper mechanism.   The blank stripper mechanism according to claim 1, wherein the scraper has a thin-walled portion narrower than a wide portion while a blanking blank portion enters on an inner peripheral surface side thereof.   The blank stripper mechanism according to claim 2, wherein the sub-margin portion of the margin portion is located at a center portion in the width direction between the lower belts.   4. The blank stripper mechanism according to claim 1, wherein the scraper is disposed at the same position in the width direction as the lower belt. In a scraper disposed on the outer periphery of a pin drum having an outer periphery with a pin inserted into a blank margin,
The margin portion is provided continuously with a main margin portion including a conveyance direction portion and a width direction portion, and a width direction portion of the main margin portion via a separation line located on the lower belt, and is positioned between the lower belts. A sub-margin portion, and a blanking portion provided independently between conveyance direction portions of the main margin portion,
The scraper is characterized by having an upstream width detail, and a wide portion that gradually increases from the width detail, and that abuts against and raises the width direction portion of the main margin portion or the side margin portion side edge. Scraper.

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