JP6451928B2 - Blank manufacturing apparatus and blank manufacturing method - Google Patents

Description

  The present invention relates to a blank manufacturing apparatus and a blank manufacturing method for separating a blank portion from a sheet for producing, for example, a paper container.

Conventionally, for example, a blank is manufactured to produce a paper container or the like. Such a blank is folded along a crease in a subsequent process.
Usually, a sheet is first printed, and the printed sheet is fed from a sheet feeding unit, the sheet fed is punched out, and a margin provided via a plurality of product units and a connecting unit A sheet including the portion is produced. Next, the blank portion of the sheet is separated from the product portion at the stripping portion, and a blank is obtained.

  The stripping unit has pins inserted into the margins from the top and bottom in order to separate the margins from the sheet conveyed by the conveyance unit that grips and conveys the sheet with the gripper. By cutting and removing, the blank portion is separated from the sheet and discharged.

  For example, Patent Document 1 proposes a stripping device that can easily attach a lower pin to a lower frame.

  However, in the stripping device as described above, most of the blank portion separated from the sheet falls into the dust collecting duct below the stripping device, but a part of the blank portion, particularly the sheet-fed sheet conveying direction. There is a problem in productivity because the upstream margin part may enter the production line.

JP 2001-232594 A

  Therefore, in order to solve the above problem, an object of the present invention is to provide a blank manufacturing apparatus and a manufacturing method capable of suppressing the upstream blank portion in the conveyance direction of a sheet-like sheet from entering the production line. The purpose is to provide.

The above object is achieved by the present invention described below. That is, the present invention is a blank manufacturing apparatus for manufacturing a blank from a sheet, and supplies a sheet-like sheet having a product portion and a blank portion provided via a connecting portion to the product portion. A stripping unit that separates a first margin including an upstream end in a sheet conveyance direction from the sheet conveyed by the sheet feeding unit, and a remaining margin from the sheet sent from the stripping unit. A blanking part that separates the product part, and the stripping part has an upper restraining means and a lower restraining means for sandwiching the first margin part, and the lower restraining means is in a horizontal direction. a flat body portion extending, have a blade including an inclined portion inclined downwardly formed continuously to the rear end of the body portion, the blade is characterized that you connecting a plurality of pins .
Further, the present invention is a blank manufacturing apparatus for manufacturing a blank from a sheet, and is a sheet feeding unit that supplies a sheet-like sheet having a product part and a blank part provided via a connecting part to the product part. A stripping unit that separates a first margin including an upstream end in a sheet conveyance direction from the sheet conveyed by the sheet feeding unit, and a remaining margin from the sheet sent from the stripping unit. A blanking part that separates the product part, and the stripping part has an upper restraining means and a lower restraining means for sandwiching the first margin part, and the lower restraining means is in a horizontal direction. A flat plate-like main body extending to the rear end of the main body, the first inclined portion being inclined downward, and the second inclined portion being connected to the front end of the main body and inclined downward And a blade comprising Inclined portion length of the is characterized by longer than the length of the second inclined portion.

Further, the present invention is a blank manufacturing method for manufacturing a blank from a sheet, and supplies a sheet-like sheet having a product portion and a blank portion provided through a connecting portion to the product portion. And a first margin part separating step of sandwiching and separating the first margin part including the upstream end in the sheet conveying direction from the sheet supplied in the sheet feeding process by the upper restraining means and the lower restraining means And a second margin part separating step for separating the remaining margin part left on the sheet sent from the first margin part separating step and the product part, wherein the lower side restraining means is a horizontal possess a flat body portion extending in a direction, the blade including an inclined portion inclined downwardly formed continuously to the rear end of the body portion, the blade, and characterized that you connecting a plurality of pins To do.
Further, the present invention is a blank manufacturing method for manufacturing a blank from a sheet, and supplies a sheet-like sheet having a product portion and a blank portion provided through a connecting portion to the product portion. And a first margin part separating step of sandwiching and separating the first margin part including the upstream end in the sheet conveying direction from the sheet supplied in the sheet feeding process by the upper restraining means and the lower restraining means And a second margin part separating step for separating the remaining margin part left on the sheet sent from the first margin part separating step and the product part, wherein the lower side restraining means is a horizontal A flat plate-like main body extending in the direction, a first inclined portion that is connected to the rear end of the main body and is inclined downward, and a second inclination that is connected to the front end of the main body and is inclined downward And the length of the first inclined portion is the first Wherein the longer than the length of the inclined portion.

  In the present invention, the lower side holding means of the stripping part has a blade provided with an inclined part that is connected to the rear end part of the main body part and is inclined downward. It can suppress that a part mixes in a production line.

It is a side view which shows the outline of the whole structure of the blank manufacturing apparatus in one Embodiment of this invention. It is a top view which shows the positional relationship of a sheet | seat and a lower side suppression means. It is a front view which shows the positional relationship of a sheet | seat and a lower side suppression means. It is a front view of a blade. It is a side view of a blade. It is a top view of a blade. It is the whole process figure showing the manufacturing method of the blank in one embodiment of the present invention. It is a top view which shows from the sheet | seat in each process of the manufacturing method of the blank of this invention to a blank. It is a side view which shows a 1st blank part isolation | separation process.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale and the vertical / horizontal dimensional ratio are appropriately changed and exaggerated from those of the actual ones.

[Blank manufacturing equipment]
First, the overall configuration of a blank manufacturing apparatus 10 according to an embodiment of the present invention will be described with reference to FIG.
The blank manufacturing apparatus 10 punches a sheet conveyed by the conveyance unit 24, a sheet feeding unit 20 that feeds a printed sheet, a sheet conveyance unit 24 that conveys the sheet along a sheet conveyance direction 30, and the like. The punching part 25 to be processed, the stripping part 26 for separating the first blank part 21 from the punched sheet, and the product part 3 and the remaining second blank part 22 are separated from the sheet from which the blank part 21 is separated. A blanking section 27 for discharging the paper, and a paper discharge section 28 for discharging the second blank portion 22 separated from the sheet to the outside.

(Paper Feeder)
A pallet 15 on which a bundle of sheets 1 is placed is placed on the sheet feeding unit 20. Sheets 1 are supplied from the sheet feeding unit 20 one by one. Note that the continuous (roll-shaped) sheet 1 may be supplied to the sheet feeding unit 20 and cut into sheet-like sheets 1 in front of the punching unit 25.

(Transport section)
The conveyance unit 24 includes a gripper bar 16, which grips the sheet and conveys the sheet along the sheet conveyance direction 30.

(Punching part)
The punching part 25 has a male mold 5 and a female mold 6. A sheet 1A sent from the sheet feeding unit 20 one by one is placed on the female mold 6 and the male mold 5 is pressed against the female mold 6 so that the notch along the outer shape of the product section 3 A crease is attached to the sheet.

(Stripping part)
Each part of the stripping part 26 is demonstrated with reference to FIGS. The stripping unit 26 includes an upper restraining means 8 and a lower restraining means 9, and is for separating a first margin part 21 described later from the sheet 1. The upper restraining means 8 and the lower restraining means 9 are moved up and down by a driving device (not shown).
The lower restraining means 9 includes at least a pin 29, a blade 50, and a stripping lower frame 12. A pin 29 is attached to the rear side of the stripping lower frame 12, and a blade 50 is connected to the pin 29. Here, the rear side of the stripping lower frame 12 refers to the upstream side of the stripping lower frame 12 in the sheet conveying direction.
The lower stripping die 11 is disposed between the stripping upper frame 17 and the stripping lower frame 12 so as not to interfere with the blade 50. The lower mold 11 for stripping has a function of making the pin 19 and the pin 19 easy to contact the first margin 21 of the sheet 1 by holding the sheet 1 horizontally when the first margin 21 is separated, By supporting the back surface of the sheet 1, the first margin portion 21 can be easily dropped downward.
The upper restraining means 8 includes at least a pin 19 and a stripping upper frame 17. A pin 19 is attached to the upper frame 17 for stripping. The pin 19 locked to the stripping upper frame 17 is disposed at a position facing the pin 29 locked to the stripping lower frame 12. Preferably, the pin 19 is disposed so as to be positioned upstream of the pin 29 in the sheet conveying direction. By comprising in this way, it can suppress more that the 1st blank part 21 mentioned later mixes in a production line.
In addition, as shown in FIG. 2, when the sheet 1 includes a third blank part 23 surrounded by the product part 3, the stripping part 26 may be configured to separate the third blank part 23. . Specifically, the pin 39 is provided at a position corresponding to the third blank portion 23 of the stripping lower frame 12. In this case, a through hole (not shown) is provided at a position corresponding to the pin 39 of the lower mold 11 for stripping, and a pin 49 is provided at a position facing the pin 39 of the upper frame 17 for stripping.
Moreover, when the product part 3 has a margin part (also referred to as a fourth margin part), the stripping part 26 may be configured to separate the fourth margin part. Specifically, a pin is provided at a position corresponding to the fourth margin of the stripping lower frame 12. In this case, a through hole (not shown) is provided at a position corresponding to the pin of the lower mold 11 for stripping, and the pin is provided at a position facing the pin of the upper frame 17 for stripping.
Further, a first margin portion discarding section 38 for accumulating the first margin section 21 may be provided below the lower side restraining means 9.

(Lower holding means)
With reference to FIG. 2, FIG. 3, each part of the lower side suppression means 9 is further demonstrated. FIG. 3 is a front view showing the positional relationship between the sheet 1 and the lower restraining means 9 when the stripping unit 26 is viewed from the upstream side in the conveyance direction of the sheet 1.
As shown in FIGS. 2 and 3, three blades 50 are arranged in the width direction of the sheet 1. Further, the main body portion 50A of each blade 50, the two pins 2 9 arranged in the width direction of the sheet 1 is connected. Since a plurality of pins 2 9 to the main body portion 50A of the blade 50 is connected, it is possible to shorten the work for attaching the pin 2 9 to the lower frame 12 for stripping. Incidentally, the pin 2 9 and the blade 50 may be formed separately, may be formed integrally. In the above description, the example in which the three blades 50 are arranged in the width direction of the sheet 1 has been described, but the number of the blades 50 is not limited to three. In the above description, an example in which two pins 2 9 with respect to the main body portion 50A is connected, the number of pins 2 9 is not limited to two.

(blade)
The blade 50 will be described with reference to FIGS. 3, 4, and 5. FIG. 4 is a front view of the central blade 50 of FIG. 3 when viewed from the upstream side in the conveyance direction of the sheet 1. FIG. 5 is a side view of the blade 50 shown in FIG. FIG. 6 is a plan view of the blade 50 shown in FIG.
The blade 50 can be made of metal, for example. The blade 50 includes at least a flat plate-like main body portion 50A that extends in the horizontal direction and a flat plate-like inclined portion 50B that is connected to the rear end portion of the main body portion 50A and is inclined downward. Here, the rear end portion of the main body portion 50A refers to an upstream end portion of the main body portion 50A in the sheet conveyance direction. The horizontal direction is a concept including not only a direction parallel to the horizontal plane but also a direction inclined at 5 ° or less with respect to the horizontal direction.
Further, a flat inclined portion 50C that is inclined downward may be connected to the front end portion of the main body portion 50A. By providing the inclined portion 50C, it is possible to suppress the sheet from being damaged. The inclined portion 50B is referred to as a first inclined portion, and the inclined portion 50C is also referred to as a second inclined portion. The first inclined portion 50B is preferably inclined 15 ° to 60 ° with respect to the horizontal plane, and more preferably 30 ° to 45 °. Further, the second inclined portion 50C is preferably inclined by 15 ° to 60 ° with respect to the horizontal plane.

(Blanking part)
The blanking unit 27 will be described with reference to FIG. The blanking portion 27 is for separating the remaining second blank portion 22 described later from the sheet 1 and forming the blank 4. The blanking section 27 has a blanking upper mold 13 and a blanking lower mold 14. The blanking unit 27 may include a pallet 15 for stacking and mounting the blanks 4.

(Output section)
The paper discharge unit 28 will be described with reference to FIG. The paper discharge unit 28 is for discarding the remaining second blank portion 22. The paper discharge unit 28 may include a second blank part discarding unit for discarding the second blank part 22 (not shown). Moreover, you may provide the belt conveyor 18 for conveying the 2nd blank part 22 to a 2nd blank part discard part.

[Blank manufacturing method]
With reference to FIGS. 7-9, the manufacturing method of the blank in one Embodiment of this invention is demonstrated.
In FIG. 7, 31 is a paper feed process, 32 is a punching process, 33 is a first margin part separating process, 34 is a second margin part separating process, and 35 is a paper discharge process. Each process is sent to the next process by a conveyance process. Reference numeral 37 denotes a flow line of the gripper bar. Further, the sheet 1 before separating the first blank portion 21 is referred to as a sheet 1A, and the sheet 1 after separating the first blank portion 21 is also referred to as a sheet 1B.

(Paper feeding process)
In the paper feeding step 31, a bundle of sheet-like sheets 1A is placed on the pallet 15, and the sheets 1A are supplied one by one. The sheet-like sheet 1A has a plurality of product portions 3 and margins 2. In FIG. 8, three rows of product portions 3 are provided in the width direction of the sheet 1A and two rows in the transport direction. An example is shown.

(Conveying process)
The sheet 1A is sent to the next process in a state where it is nipped one by one by the gripper bar 16 in the conveying process.

(Punching process)
In the punching process 32, a cut along the outer shape of the product part 3 is formed in the sheet 1A. At this time, the product part 3 and the blank part 2 are provided with cuts so as to be connected via a connecting part (not shown). At this time, ruled lines may be provided.

(First margin part separation step)
FIG. 9 shows a first margin part separation step.
In the first margin part separating step 33, the first margin part 21 including the upstream end of the sheet 1 </ b> A in the sheet conveying direction 30 is sandwiched and separated by the upper restraining means 8 and the lower restraining means 9.
FIG. 9A shows a state before the sheet 1 </ b> A is sandwiched between the upper restraining means 8 and the lower restraining means 9.
The upper restraining means 8 is moved downward and the lower restraining means 9 is moved upward until the sheet 1A is clamped by the driving device.
Note that the upper restraining means 8 and the lower restraining means 9 both move up and down in order to approach and separate.
Next, as shown in FIG. 9B, the rear side of the sheet 1 </ b> A is sandwiched between the pin 19 of the upper restraining means 8 and the main body portion 50 </ b> A of the blade 50 of the lower restraining means 9. Here, as shown in FIG. 2, the rear side of the sheet 1 </ b> A indicates an upstream side in the sheet conveying direction of the sheet-like sheet 1 </ b> A. In addition, as shown in FIG. 2, when the blank portion 2 of the sheet 1 </ b> A includes the third blank portion 23 surrounded by the product portion 3, the pin 49 of the upper restraining means 8 and the pin 39 of the lower restraining means 9 The third margin 23 of the sheet 1A may be sandwiched. Hereinafter, an example in which the third margin part 23 is also separated in the first margin part separation step 33 will be described.
Next, the upper side restraining means 8 and the lower side restraining means 9 are lowered while holding the rear side of the sheet 1A and the third margin part 23, and the first margin part 21 and the third margin part 23 are separated from the sheet 1A. Thus, the sheet 1B is formed. Note that the first blank portion 21 is a portion including the rear end portion of the sheet 1A, that is, the upstream end portion in the sheet conveyance direction 30, and specifically, as shown in FIG. It is a portion surrounded by the rear end portion, both side end portions, and the rear end portion of each product portion 3. The rear portion of the seat 1A is also referred to as the tail edge side 7.
Thereafter, as shown in FIG. 9C, the upper restraining means 8 is moved upward and the lower restraining means 9 is moved downward by the driving device.
At this time, since the blade 50 includes the inclined portion 50B, the first blank portion 21 can be easily discharged downward, and mixing of the first blank portion 21 into the production line can be suppressed.
Further, since the pin 19 of the upper restraining means 8 is arranged upstream of the pin 29 of the lower restraining means 9 in the sheet conveying direction, the first blank portion 21 can be easily discharged downward, and production It can suppress that the 1st margin part 21 mixes in a line.

(Second margin part separation step)
In the second margin part separation step 34, the second margin part 22 and the product part 3 left on the sheet 1B sent from the first margin part separation step 33 are separated.
In the second blank portion separation step 34, the blanking upper die 13 is moved downward to approach the blanking lower die 14, and the male projection attached to the blanking upper die 13 side is provided. The product part 3 of the sheet 1B is pressed downward.
Thereafter, the product portion 3 of the sheet 1B is pushed into the hole of the blanking lower die 14, the connecting portion is cut, the product portion 3 is separated from the sheet 1B, and falls downward from the hole of the lower blanking die. . The product part 3 dropped and collected in this way is a blank 4.
The blanking upper mold 13 and the blanking lower mold 14 may be moved up or down, or only the blanking upper mold 13 may be moved up and down.

(Discharge process)
In the paper discharge step 35, the blank portion 22 sent from the second blank portion separation step 34 is discarded.

DESCRIPTION OF SYMBOLS 1 Sheet 1A Sheet 1B before 1st margin part separation Sheet 1 after 1st margin part separation 2 Margin part 3 Product part 4 Blank 5 Male type 6 Female type 7 Bare bottom side 8 Upper restraining means 9 Lower restraining means 10 Blank Manufacturing apparatus 11 Stripping lower mold 12 Stripping lower frame 13 Blanking upper mold 14 Blanking lower mold 15 Pallet 16 Gripper bar 17 Stripping upper frame 18 Belt conveyor 19 Pin 20 Paper feeding section 21 First margin 22 Second margin part 23 Third margin part 24 Transport part 25 Punching part 26 Stripping part 27 Blanking part 28 Paper discharge part 29 Pin 30 Sheet transport direction 31 Paper feed process 32 Punching process 33 First margin part separation Step 34 Second margin portion separation step 35 Paper discharge step 36 Transport step 37 Gripper bar flow line 38 First margin portion discard portion 39 Pin 49 Pin 50 Blur 50A body portion 50B inclined portion (first inclined portion)
50C inclined part (second inclined part)

Claims (4)

A blank manufacturing apparatus for manufacturing a blank from a sheet,
A sheet feeding unit that supplies the sheet-shaped sheet having a product part and a margin part provided via a connecting part to the product part;
A stripping unit that separates a first margin including an upstream end in a sheet conveying direction from the sheet conveyed by the sheet feeding unit;
A blanking part that separates the remaining blank part from the product part from the sheet sent from the stripping part,
The stripping portion has an upper restraining means and a lower restraining means for sandwiching the first margin portion,
Said lower restraining means, have a blade comprising a flat body portion extending in the horizontal direction, and an inclined portion inclined downwardly formed continuously to the rear end of the main body portion,
The blade is blank manufacturing apparatus characterized that you connecting a plurality of pins. A blank manufacturing apparatus for manufacturing a blank from a sheet,
A sheet feeding unit that supplies the sheet-shaped sheet having a product part and a margin part provided via a connecting part to the product part;
A stripping unit that separates a first margin including an upstream end in a sheet conveying direction from the sheet conveyed by the sheet feeding unit;
A blanking part that separates the remaining blank part from the product part from the sheet sent from the stripping part,
The stripping portion has an upper restraining means and a lower restraining means for sandwiching the first margin portion,
The lower restraining means is connected to a flat plate-like main body portion extending in the horizontal direction, a first inclined portion connected to the rear end portion of the main body portion and inclined downward, and a front end portion of the main body portion. have a blade and a second inclined portion inclined downward,
And the length of the 1st inclination part is longer than the length of the 2nd inclination part, The manufacturing apparatus of the blank characterized by the above-mentioned . A blank manufacturing method for manufacturing a blank from a sheet,
A sheet feeding process for supplying the sheet-shaped sheet having a product part and a blank part provided via a connecting part to the product part;
A first margin part separating step of sandwiching and separating the first margin part including the upstream end in the sheet conveying direction from the sheet supplied in the sheet feeding step by the upper restraining means and the lower restraining means;
A second blank portion separating step for separating the remaining blank portion left on the sheet sent from the first blank portion separating step and the product portion;
Said lower restraining means, have a blade comprising a flat body portion extending in the horizontal direction, and an inclined portion inclined downwardly formed continuously to the rear end of the main body portion,
Method for producing a blank the blade, characterized that you connecting a plurality of pins. A blank manufacturing method for manufacturing a blank from a sheet,
A sheet feeding process for supplying the sheet-shaped sheet having a product part and a blank part provided via a connecting part to the product part;
A first margin part separating step of sandwiching and separating the first margin part including the upstream end in the sheet conveying direction from the sheet supplied in the sheet feeding step by the upper restraining means and the lower restraining means;
A second blank portion separating step for separating the remaining blank portion left on the sheet sent from the first blank portion separating step and the product portion;
The lower restraining means is connected to a flat plate-like main body portion extending in the horizontal direction, a first inclined portion connected to the rear end portion of the main body portion and inclined downward, and a front end portion of the main body portion. have a blade and a second inclined portion inclined downward,
And the length of the 1st inclination part is longer than the length of the 2nd inclination part, The manufacturing method of the blank characterized by the above-mentioned .

Images