JPH0141597Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Various apparatuses have been developed for cutting box stock from paperboard and then removing waste paperboard or scrap from the box stock.

Typically, a metal ruler cutting die is configured to eject both the final product and waste paperboard simultaneously as they are cut. The metal ruler-type cutting die disclosed in the present application is configured such that waste paperboard is forced between the knives of the cutting die, and then the pushed waste paperboard is removed from the die by a peeling device.

A waste paperboard removing device is generally one that removes waste paperboard from paperboard. For example, U.S. Pat. No. 3,643,553 to Morimoto discloses a stripping device in which a plurality of rotatably mounted pins are inserted into waste paperboard to be cut from corrugated boxboard. Similar devices were cited in US patent specifications.

Bischop U.S. Patent No. 3,391,589; Smith et al. U.S. Pat. No. 3,877,353 and See in Matsuo US Pat. No. 4,031,816.

Japanese Utility Model Publication No. 50-12794 discloses a waste removal device, which removes waste from an original plate on which a notch for cutting the developed box shape is made at another station. In order to manufacture a box, two devices are required: the device for making the cutting notches and the device disclosed in the publication, and there is a problem in that the device used for manufacturing the box becomes large.

Further, another waste removal device is disclosed in Japanese Utility Model Publication No. 14231/1983. In the debris removal section of this device, the debris is pushed out of the sheet by a rubber piece and then impaled by a pin, and there is a problem in that the extrusion by the rubber piece and the piercing by the pin must be synchronized.

In contrast, in the present invention, the paperboard cutting operation and the waste removal are all carried out simultaneously at the same station.

That is, the present invention includes a rotatably mounted first cylindrical drum having an externally circumferentially extending seat support surface, an axis of rotation parallel to the axis of rotation of the first cylindrical drum; a second cylindrical drum with knives for cutting the sheet passing between the first cylindrical drum and itself into finished product parts and waste paperboard, the axis of rotation being parallel to the axis of rotation of the second cylindrical drum; a third cylindrical drum operatively engaged with the first, second and third cylinders and having a peel pin attached thereto extending outwardly from a surface thereof;
drive means for rotating the cylinder and the third cylinder in the opposite and the same direction, respectively, with respect to the direction of rotation of the first cylinder, and peeling means operative to remove the waste paperboard from the peeling pin, The stripping pin is positioned to extend into the cutting die and penetrate the waste paperboard as the third cylinder rotates, and peels off the waste paperboard as the third cylinder continues to rotate. The present invention provides a waste paperboard peeling device characterized in that it is configured to remove waste paperboard from a cutting die.

Another embodiment of the invention comprises a combination of a rotary die cutter, a pin holder and a drive means, the rotary die cutter having a first drum and a second drum with parallel rotational axes, Mounted above the drum is a paperboard cutting die movable beyond the second drum, the cutting die having a cutting edge separating the product-forming portion from the waste paperboard-forming portion and having a cutting edge that separates the product-forming portion from the waste paperboard-forming portion. is operable to cut paperboard material passing between the second drum and the second drum;
The pin holder is rotatably mounted adjacent to the first drum and has parallel axes of rotation, and has a plurality of peel pins that penetrate and release the paperboard member located within the die. the drive means is engaged with the first drum, the second drum and the pin holder and rotates the first drum in a direction opposite to the second drum and the pin holder. The peeling pin is thereby moved into and out of the waste paperboard forming portion of the die means.

Another embodiment of the invention comprises a hub and a plurality of stripping pin means mounted on the hub, the pins being mounted on the hub for removing waste paperboard from a rotating cutting die mounted near the hub. It does the work that it does.

It is an object of the present invention to provide a stripping device for use with a rotating die cutter that completely strips off all waste paperboard to be discharged.

Another object of the invention is to provide a new and improved stripping device.

The objects and advantages of the present invention will become more apparent from the following description.

As shown in FIGS. 1 and 2, the device 10 of the present invention is equipped with a metal rotary ruler-type cutting die (hereinafter referred to as die), the die only releases the final product, and the metal ruler-type cutting knife The waste paperboard is forced between the holes (hereinafter referred to as knives), and then the waste paperboard is released by a peeling pin (hereinafter referred to as pins). The device 10 consists of first, second and third cylindrical drums 11, 12 and 13 mounted on rotating shafts 14, 15 and 16 located parallel and spaced apart from each other. One end of the drive shaft of each cylindrical drum is supported by a bearing on the frame 17,
At the other end of each drive shaft of the drums 11, 12 and 13, there are sprocket gears 18, 1 that mesh with each other.
9, 20 are fitted and the gears are driven by conventional drive means 21. Therefore, each cylindrical drum moves synchronously and at the same angular velocity as indicated by the arrows 27 and 27 in FIG.
It rotates in the directions shown at 26 and 34.

A die 22 is mounted on the circumferential surface of the second drum 12, at least a portion of which extends along the circumferential surface. The die 22 consists of a substrate 23 attached to a drum, and the substrate 23 is provided with a plurality of upright knives 24 projecting radially outward. The knife 24 is placed in the final cut paperboard shape. The first drum 11 at the bottom is the drum 1
An uncut sheet 25 is placed below drums 11 and 1.
The drums 11 and 12 are spaced apart from each other sufficiently to allow the drums 11 and 12 to pass between the second drum and the second drum.
When rotated in opposite directions as shown by arrows 26 and 27 in the figure, the knife 24 is brought close enough to allow the paperboard 25 to be cut. When the fed paperboard 25 is cut by the knife 24,
The cut paperboard emerges completely from between the drums 11 and 12 as a final paper product 28 in FIG. It's staying. The knife 24 separates two separate sections of paperboard material, namely the desired final contour 31 (FIG. 1).
and the knife 24, and are arranged so as to temporarily confine the waste portions 29, 30 stuck to the die.

The waste paperboard to be discharged from the die is transferred to a third drum or a plurality of pins 32 attached to the uppermost peeling pin holder 13 (hereinafter referred to as holder).
As a result, it is released from the state in which it was pressed between the knives (Fig. 2). The pins 32 are mounted on a suitable substrate attached to the holder 13. pin 3
2 and the mounting board are combined with the holder 13 and rotate in the direction shown by the arrow 34, which is opposite to the direction of rotation of the drum 12. The pins 32 are mounted within the width of the holder at desired points on its circumferential surface to accommodate the various shapes of waste paperboard formed by the cutting knife 24. When the holder 13 is rotated, the pin 32
contacts the waste paperboard 29, pierces it, and is given a forward lifting force, removing the waste paperboard from the die 22 and transporting it to a processing position.

The length of the pin 32 is a particularly important factor for satisfactory operation of the stripping device. More specifically, the radial distance from axis 16 to the outermost end of pin 32 must be greater than the radial distance from axis 15 to knife 24. Since the drum 12 and the holder 13 are both rotating at the same angular velocity, increasing the radial distance of the pin 32 causes the circumferential velocity of the pin to be greater than the circumferential velocity of the knife, thereby causing the tip of the pin to applies pressure to the waste paperboard 29, causing the waste paperboard 29 to be released from its jammed state between the knives. The pressure at the tip of the pin 32 applied to the waste paperboard to be discharged creates a lifting action during separation while the stripping device and die continue to rotate through 360°.

The waste paperboard sticks to the pins as the holder 13 rotates, but it is removed from the pins by stripping plate means 35 provided laterally within the width of the stripping device adjacent to the row of pins. . The peeling plate is supported by a substrate extending along the circumferential surface of the holder 13 while the holder 13 rotates 360 degrees. The plate 35 peels off the waste paperboard 36 to be discharged from the holder 13 and discharges it into a processing conveyor 37.

FIG. 3 shows another embodiment of the peeling device. This peeling device 40 is equipped with a rotating shaft 41 mounted by the same method as the above-described mounting method of the holder 13, one end of the rotating shaft 41 is equipped with a sprocket gear 42, and the gear 42 is attached to the drum 12. It is installed in mesh with the installed sprocket gear 19. Therefore, the shaft 41 has a rotation axis parallel to the shaft 15. If the stripping device represented by holder 13 is removed and replaced by stripping device 40, it will operate in the same manner as described for the embodiment shown in FIG.

A laterally movable hub 43 is attached to the shaft 41 and the pin 32 is attached to the hub 43 at a predetermined location to remove waste paperboard from the die 22. The pin is inserted into the circumferential surface of the hub 43 to match the cut shape defined by the knife and die. Such pins can also vary in length so as to cause changes in the circumferential speed of their tips during rotation of the stripping device. A plurality of separation plates 35, similar to those previously described and shown in FIG. 2, are provided on the hub 43 adjacent to the rotation pins to position the plates 35 between the movable hubs. A peeling plate releases the waste paperboard from the pins and it is placed on a processing means similar to the processing conveyor 37. Hub 43 can be attached to shaft 41 in a variety of conventional configurations.

The present invention provides a means to control the emitted waste paperboard from becoming incorporated into the final product. Control of emitted waste paperboard prevents contamination of the ink supply system, provides safe and clean machine operation, and significantly increases productivity. As it rotates 360 degrees, the stripping device disclosed herein removes waste paperboard that is forced into the die in a controlled manner when and where desired. The power source for rotating the stripping device can be obtained from a rotating die cutter or an external source.

Separate stripping dies can also be combined with individual dies to facilitate quick attachment to stripping equipment, thereby significantly reducing assembly time and
Reduce expenses. Cutting is greatly facilitated by forcing the waste paperboard to be discharged into a die, while the final product is transported through different planes, thereby ensuring a reliable separation of the final product from the waste paperboard to be discharged. do. Lower cutting pressures are possible, which results in longer life of the cutting anvil and cutting die.

Although the present invention has been disclosed in detail in the drawings and the foregoing description, these are to be considered illustrative in nature and not restrictive.
Although the preferred embodiment has been shown and described, it is to be understood that all modifications of the principles of the invention are within the scope of the utility model claims.

[Brief explanation of the drawing]

FIG. 1 is an exploded plan view of a rotary ruler-type cutting die with a peeling device constructed in accordance with the present invention;
The figure is an enlarged cross-sectional view taken along line 2-2 in Figure 1 in the direction of the arrow, showing the middle and upper drums rotated to show the removal of waste paperboard by the peeling pin; The figure is an exploded side view showing another embodiment of the peeling device. 10, 40... Peeling device, 11, 12... Cylindrical drum, 13... Peeling pin holder, 14, 15,
16... Rotating shaft, 17... Frame, 21... Drive means, 22... Cutting die, 23... Substrate, 24...
...Cutting knife, 32...Peeling pin, 35...Peeling plate.

Claims (1)

[Claims for Utility Model Registration] A first cylindrical drum 11 rotatably mounted with an externally circumferentially extending seat 25 supporting surface, an axis of rotation of the first cylindrical drum 11; a second cylindrical drum 12 which is parallel and has knives 24 which cut the sheet 25 passing between said first cylindrical drum 11 and itself into final product parts 28 and waste paperboard 29, 30; a third cylindrical drum 13 whose axis is parallel to the axis of rotation of the second cylindrical drum 12 and is fitted with a peeling pin 32 extending outwardly from its own surface; the first, second and third cylinders; 11,12,1
drive means 1 operatively engaging 3 and rotating the second cylinder and the third cylinder in the opposite and the same direction, respectively, with respect to the direction of rotation of the first cylinder 11;
8, 19, 20, 21, and a stripping means 35 operative to remove the waste paperboard 29, 30 from the stripping pin 32, which when the third cylinder 13 rotates, A structure that is positioned so as to extend into the cutting die 22 and pierce the waste paperboard 29, 30, and remove the waste paperboard 29, 30 from the cutting die 22 as the third cylinder 13 continues to rotate further. A waste paperboard peeling device characterized by: