JPH024627A - Opening and cutting apparatus for outer wrapping paper of paper roll - Google Patents

Abstract

PURPOSE:To permit an outer wrapping paper to be opened and cut keeping clear of the roll end of a paper roll by affixing the mark indicating the roll end of the paper roll on the end surface thereof. CONSTITUTION:A lifting rod 2 provided on a moving body 1 is fitted with an upwardly obliquely movable opening head 5 which is provided with a sensor 57 for indication mark, a guide member 58 for raising a tongue-shaped folded tab E'' of an outer wrapping paper and a verification sensor 56 therefor. The mark 5 indicating the roll end of a paper roll P is affixed on the end surface P' thereof, said folded tab E'' of the outer wrapping paper E is remained on other areas than the roll end and the end covered by the outer wrapping paper and said tab E'' is raised with the guide member 58 by rotating the paper roll P. The tab thus raised is gripped by an opening and closing gripper 51 and moved upwardly to thereby produce a clearance for receiving an opening and closing shoe 53 between the outer wrapping paper E and the paper roll P and said shoe 53 thus forced thereinto is moved axially of the paper roll, whereby the outer wrapping paper E is opened and cut in the positions other than the roll end.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is for unsealing and cutting the wrapping paper encasing a roll of newsprint or the like by mechanical means without manual intervention. It is used as part of a device that automatically supplies webs to rotary presses, etc.

Conventional technology In the past, in the process of opening and cutting the wrapping paper, a worker holding a bamboo spatula for unwrapping and cutting would raise the folded edges of the wrapping paper, and cut the gap between the inner circumferential surface of the raised edges and the outer circumferential surface of the web. The wrapping paper was opened and cut by pushing the tip of a bamboo spatula into the paper and pushing the bamboo spatula in the axial direction of the web.

Therefore, the applicant developed a technique for performing the above-mentioned manual work by mechanical means and filed an application as Japanese Patent Application No. 1983-47681, and the present invention is an improvement on the invention related to that application.

Problems to be Solved by the Invention The wrapping paper opening and cutting device for a roll paper disclosed in the above-mentioned Japanese Patent Application No. 62-47681 grasps the folded edges of the wrapping paper folded around the entire outer edge of the end face of the roll paper with an opening/closing gripper. The outer wrapping paper is opened and cut after the folded outer wrapping paper is opened and cut. However, there is little gap between the 01Y edge of the folded outer wrapping paper and the end surface of the roll paper, so it is difficult to grasp the edge with an opening/closing gripper. The problem was that there was a lack of certainty.

Furthermore, if the end area of the web is unsealed, there is a risk that the end of the web may be cut, but there is also the drawback that the end area of the web cannot be detected because it is covered with outer wrapping paper and cannot be seen visually. .

Furthermore, there is a covered end of the outer wrapping paper near the winding end area of the web, but the wrapped end of the outer wrapping paper has more layers of outer wrapping paper than other parts, so it becomes thicker and becomes difficult to open. Since it was difficult to cut, a bamboo spatula was used to avoid the thickened part, but it was not possible to detect the thickened part without manual labor.

Means for Solving the Problems The present invention provides an indication mark of the winding end area of the web paper on the end surface of the web paper, and a tongue-like wrapping paper folding edge portion outside the winding edge area and outside the wrapped end of the wrapping paper. , the ear part is made to stand up by the inner member by the rotation of the roll paper, the raised ear part is grasped and lifted with an opening/closing gripper, an opening shoe push-in gap is created between the outer wrapping paper and the roll paper, and the push-in is done. The opening shoe is moved in the axial direction of the web to unseal and cut the wrapping paper at a position other than the winding end area of the web.

The area near the winding end of the web is thicker than other parts due to overlapping of the web and outer wrapping paper, and there is a step, so when the thickened area is opened, the web is also cut. Not a good place. Therefore, by attaching a mark indicating the winding end area of the web paper to the end surface of the web paper, the tongue-shaped outer paper folding edge part gripped by the opening/closing gripper is indicated in the same area other than the winding end area of the web paper. Can be formed remaining in position.

By rotating the web, the tongue-like folded ears are erected by the internal raising member pressed against the end surface of the web, making it easy to grip with the opening/closing gripper.

The opening/closing gripper that grips the folded tab of the tongue-shaped wrapping paper tilts upward and rolls up the tab, creating a gap between the inner circumferential surface of the wrapping paper and the outer circumferential surface of the web, and inserts the tip of the opening shoe into the gap. is pushed in, the shoe is moved in the axial direction of the web, and the wrapping paper is opened and cut while avoiding the winding end area of the web.

Embodiment FIG. 1 is a front view of the present invention, in which a movable body 1 that reciprocates in the axial direction of a web P covered with an exterior paper E on an upper rail R of a gate-shaped frame F is a cable drag chain. Power is supplied from the power supply cable H supported by the cylinder assembly WC along the guide member G erected on the movable body l.
A gate-shaped lifting head 3 shown in FIG. 2 is fixed to the lower end of the lifting rod 2, which moves up and down by the operation of A rolling detection roller 4 is pivotally supported at the tip of a swinging arm 41 that is pivotally supported on the elevating head 3 so as to be able to move up and down, and is fixed to a horizontal shaft pin 31 that is rotatably supported horizontally on the elevating head 3. A mounting shaft A, which is horizontally fixed to the opening head 5, is fixed to the opening head support arm 32.

The horizontal pin 31 is rotated via a link by a cylinder 33 that is swingably supported on the lifting head 3, and the opening head 5 swings and turns in the vertical direction due to the rotation of the horizontal pin 31. .

Therefore, details of the above-mentioned detection roller 4 and unsealing head 5 will be explained below.

(Detection Roller) As shown in Fig. 2, the detection roller 4 is connected to the gate-shaped vertically moving rad 3.
It is rotatably attached to the tip of a swinging arm 41 that is pivotably supported vertically swingably to a bracket 34 provided in the center of the
An actuator 42 that operates a limit switch (not shown) is protruded near the base end of the swing arm 41, and the elevating head 3, which is moved downward by the extension operation of the cylinder C, is moved by the detection roller 4.
An actuator 42 protruding from the base end of a swinging arm 41, which rotates upward when pressed against the top ridgeline of the wrapping paper E enclosing the web P, operates the limit switch (not shown), and the cylinder Stop the extension operation of C and stop the downward movement.

Therefore, the elevating rod 3 can be positioned at an optimal height depending on the diameter of the paper roll.

The stopped lifting head 3 is slightly lifted upward by the contraction operation of the cylinder C' whose upper and lower ends are connected to the movable body 1 and the lifting head 3, and the detection roller 4 is separated from the top of the wrapping paper E and reaches the limit. The actuator 42, which is in contact with the switch, also moves away from the limit switch.

Further, when the lifting head 3 is moved slightly downward by the extension operation of the cylinder C', the actuator 42 hits the limit switch again, and the cylinder C is contracted and the lifting head 3 is moved downward.
is raised and another limit switch (not shown) is hit at the rising end to stop the lifting head 3.

(Opening Head) Inside the opening head 5, which has an opening-shaped cross section, there is an opening/closing gripper 51 for gripping a tongue-shaped exterior paper folded edge E'' (see FIG. 5) as shown in FIG. 51, an opening/closing driving cylinder 52, and an advancing/retracting driving cylinder 5 for an unsealing shoe 53 that opens and cuts the top ridgeline of the outer wrapping paper E encasing the roll paper P.
4 is attached to the outside of the unsealing head 5, and a displacement sensor 55 is attached to the outside of the unsealing head 5 to set the distance between the end surface P' of the paper roll and the unsealing head 5 rotated in the upward direction V (the position indicated by the chain line in FIG. 1) to a predetermined value, and the ear portion. A rising detection sensor 56 and a mark sensor 57 are attached to the front part of the unsealing head 5, and a raising inner member 5 for raising the tongue-shaped exterior paper folded edge E'' is connected by a spring to the end surface P' of the rolled paper. It is attached by a pivot pin 58a that is biased to protrude in the direction.

That is, as shown in an enlarged view in FIG. 4, a displacement sensor 55 is attached to the outer lower part of the opening hand 5, a pair of ear standing detection sensors 56, 56 are attached to the upper part, and a The internal drafting member 5 is attached, and the mark sensor 57 is attached to the attachment shaft A.

As shown in FIG. 3, the opening/closing gripper 51 attached to the inside of the opening/closing head 5 is a pair of gripping tools 51a having segments that engage with a rack 52a carved in the piston rond of the opening/closing drive cylinder 52.

51a, the pair of gripping tools 51a, 51a are opened as shown by chain lines, and a cutter 51b is provided on the side of one of the gripping tools 51a to make a cut in the raised tongue-shaped exterior paper folded edge E''. , (see FIG. 3), needles 51c are attached to the central portions to pierce the gripped tongue-shaped wrapping paper folded edges E'.

Further, the opening shoe 53 is pivoted so as to be able to rotate only upwardly at the lower end of an operating link 53a which is rotatably supported at the tip of the piston rod of the drive cylinder 54, and the upper end of the operating link 53a is formed within the opening head 5. trumpet-shaped cam surface 54a
The cam roller 53b is guided by the cam roller 53b.

Therefore, by extending the piston rod of the drive cylinder 54, the cam roller 53b is guided by the expanded surface of the trumpet-shaped cam surface 54a, and supports the opening shoe 53 on the top ridgeline of the web.

Furthermore, as shown in FIG. 4, the proximal end of the inner drafting member 58 is inserted into the hole of the opening head 5 and is rotated and biased in the direction of pressing the inner drafting member 58 against the end surface P' of the web. It is fixed to the pin 58a.

FIG. 5 is a perspective view of a roll-shaped web P wrapped with an outer paper E, in which the winding end P' of the web P is stuck to the outer surface of the web with an adhesive tape T, and the outer paper E is wrapped. The edge E' is attached to the surface of the wrapping paper E, but the winding edge area of the web is thickened as described above (compared to other peripheral areas, because the number of overlapping sheets of the wrapping paper and web is larger). Not only that, but there is a risk of cutting the web if the end area of the winding is opened.
A display mark S is attached to the end surface of the roll paper to indicate the winding end area, and a tongue-like shape is attached so that the unsealing cut point of the outer wrapping paper avoids the winding end area of the roll paper marked with the mark S. An exterior paper folded edge E'' is formed at a position spaced apart from the position of the mark S.

(Opening operation) Next, the operation of opening and cutting the outer wrapping paper will be explained.

When the roll paper P covered with the outer wrapping paper E shown in FIG. 5 is placed on the pair of rotation drive rollers R, , R, which are arranged opposite to each other, the cylinder C shown in FIG. When the rod 2 is lowered and the elevating head 3 approaches the top ridgeline of the wrapping paper E covering the web P, and the detection roller 4 presses against the top ridgeline, the swinging arm 41 moves clockwise in FIG. The proximal actuator 42 of the swinging arm 41 hits a rimming switch (not shown) to stop the cylinder C from extending.

In this way, the elevating head 3 is stopped at the optimal position relative to the top ridgeline of the wrapping paper E, and then the cylinder 33 is extended and the opening head 5 is moved from the solid line position in FIG. 1 to the horizontal axis 31.
Rotate down around the 1X-ray position.

A displacement sensor 55 as shown in FIGS. 3 and 4 is attached to the opening head 5, and the light emitted from the displacement sensor 55 is irradiated onto the end surface P' of the web, so that the moving body l
is moved to the left in FIG. 1 and the displacement sensor 55 receives the light, thereby detecting that the unsealing hand 5 has reached a predetermined distance from the end surface P' of the web, and moves the moving body 1 to the left. Movement is stopped.

Therefore, the unsealing pad 5 is stopped at an optimal height position relative to the diameter of the web P and at an optimal distance from the end surface P' of the web.

At this time, the raising internal member 58 shown in FIG.
a, 51a are opened by the operation of the opening/closing drive cylinder 52.

Next, the cylinder C' performs a contracting operation to raise and lower the rad 3 and separate the detection roller 4 from the top of the wrapping paper.

Next, when the web P is rotated counterclockwise in FIG. 4, the web winding end area display mark S attached to the end surface of the web is detected by the mark sensor 57, and then,
The ear portion E'' is detected by the ear portion upright sensor 56, and the counterclockwise rotation of the web P is stopped in response to the detection signal.

By rotating the web in the counterclockwise direction, the raised inner member 5 raises the above-mentioned tongue-shaped outer wrapping paper folded edge E'' so that it can be easily grasped.

A pair of ear standing detection sensors 56 confirms that the ear E stands up.
, 56, but when the ear portion E1 is not erected, the roll paper P is rotated once again in the counterclockwise direction, and the mark sensor 57 stops rotation of the roll paper, and the ear portion standing detection sensors 56, 56 detect the ear portion E. “Confirm that the person is standing.

When it is confirmed that the ear portion E" is upright, the cylinder C' is extended again to lower the ladder 3 and press the detection roller 4 against the top of the wrapping paper E. Then, the pair of gripping tools 5
1a and 51a are closed by operating the opening/closing drive cylinder 52 to grip the ear portion E", and one gripping tool 51a
The needle 51c attached to the ear 51c pierces the ear E', and a cut is made on the side of the gripped ear E' by the cutter 51b.

When the opening/closing gripper 51 grips the raised ear E#, the opening head 5 moves to the first position due to the contraction operation of the cylinder 33.
The opening shoe 53 returns to the horizontal position shown in FIG. Back side of E# and roll P
inserted into the gap between the surface of the

The opening/closing gripper 51 can easily roll up the ear portion E' using the cut made by the cutter 51b.

Therefore, the opening/closing drive cylinder 52 is extended and the gripping tool 5 is
1a and 51a, release the grip on the ear E'', and at the same time move the movable body 1 to the left in FIG. The top ridgeline of the outer packaging paper E can be easily opened and cut while avoiding the edge area.

Then, when the cutting of the wrapping paper is completed and the detection roller 4 comes off the end of the wrapping paper E and falls, the movable body 1 decelerates and stops.

The unsealing/cutting speed is controlled by a travel distance detection sensor 6 attached to the elevating head 3 and located above and in front of the detection roller 4 so that the speed is reduced at both ends and increased at the center.

When the outer paper unsealing and cutting work is completed, the loading roller R1゜R1
rotates to peel off the unsealed and cut exterior paper E from the web P.

A color identification sensor K for detecting whether the wrapping paper has been opened or cut is attached to the lower end of the gate-shaped frame F.

The unsealing shoe 53 that has completed the unsealing and cutting operation is housed in the unsealing head 5 by the retracting operation of the advancing/retracting drive cylinder 54, and the elevating head 3 slightly rises and moves backward to return to the original standby position. .

The tip of the opening shoe 53 has a dolphin's head shape to prevent the opening cut opening from meandering, and the rear end of the opening shoe is formed with an extending sliding stabilizing plate to ensure running stability of the opening shoe. There is.

Effects of the Invention In the present invention, the winding end area display mark of the winding paper is attached to the end surface of the winding paper, and the tongue-like folded edge of the wrapping paper is left remaining outside the winding edge area. It is possible to avoid the winding edge area, and therefore, it is possible to mechanically select the easy-open cutting point without manual work, making the opening and cutting work easier. Since the tongue-like folded ears remain and the other folded edges are removed, the ears can be easily raised upright, and gripping by the opening/closing gripper can be performed reliably, making it easier to open and cut the seal using mechanical means. can be carried out reliably, and its effects are significant.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a left side view of the lifting head, Fig. 3 is an opening head, and Fig. 4 is a perspective view taken along the line IV-IV in Fig. 3. FIG. 5 is a perspective view of a web wrapped in an outer wrapper. 1... Moving object 2... Lifting rod 3...
Lifting head 4... Detection roller 5... Opening head 51... Opening/closing gripper 53... Opening shoe 55... Displacement sensor 56... Ear standing confirmation sensor 57... Display mark detection sensor 58 ... Inner material for raising ears E ... Outer paper E'' ... Tongue-shaped outer wrapping paper Folded ears P ... Wrap paper S ... Wrap paper winding end area display mark Fig. 2 Fig. 5

Claims (1)

[Claims] A movable body that attaches an indication mark of the winding end area of the web to the end face of the web covered with an exterior paper, leaves a tongue-shaped exterior paper folding edge portion outside the winding end area, and travels in the axial direction of the web. is placed above the web, an opening head is attached to a lifting rod provided on the movable body so as to be tiltable in the vertical direction, and the opening head is provided with a means for detecting the display mark and an inside of the folded edge of the tongue-shaped outer wrapping paper. A member and a sensor for confirming the standing up of the tongue-shaped outer wrapping paper folded edge are provided, and an opening/closing gripper that grips the raised tongue-shaped outer wrapping paper folded edge and an opening shoe that opens and cuts the outer wrapping paper are directed on a line of intersection. and an outer wrapping paper opening/cutting device for a web paper, which is attached to the opening head.