JP2813299B2 - External Paper Suction Pad Actuator in Cutting and Opening Device of Web Paper Envelope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting and unsealing an exterior paper enclosing a paper roll such as newsprint paper by a mechanical means without manual operation. It is used as a part of an apparatus for automatically feeding a roll of paper.

[0002]

2. Description of the Related Art As a conventional technique for cutting and opening a wrapped paper-wrapped outer paper, for example, as disclosed in Japanese Patent Application Laid-Open No. Hei 5-319624 (see FIG. 1), the outer paper is not damaged without damaging the surface of the paper. In order to cut and open only the cut and unsealed portion, the cut and unsealed end portion of the outer packaging paper 1 is partially sucked and floated by a pair of spaced suction pads P, and the floating outer paper portion is cut with the cutting cutter B, and the raised outer paper back surface and the rolled paper are cut off. The cutting and unsealing of the exterior paper is performed by inserting the tip of the cutting and unsealing member C into the gap formed between the paper and the surface and moving the cutting and unsealing member in the generatrix direction of the exterior paper. Then, in order to facilitate the cutting and opening of the exterior paper by moving the cutting and opening member in the generatrix direction, the pair of suction pads in the external paper suction state are tilted in the direction in which the cutting and opening portion expands.

[0003]

In the prior art described above, the support rod having the suction pad attached to the lower end is loosely inserted into the pair of tilt operation links as means for tilting the suction pad. The support rod moves freely and freely rotates about the axis of the support rod, and the inclination of the suction surface of the suction pad does not match the inclination of the outer peripheral curved surface of the exterior paper. Since it does not adhere to the outer peripheral curved surface, the external paper suction action is significantly attenuated, and the external paper may not be able to float.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to an apparatus for cutting and opening a package by cutting and opening an end portion of an enveloped paper of a horizontally wrapped paper with a pair of separation suction pads provided on an opening head. The head is provided with a pair of suction heads whose strokes are independently controlled with respect to the outer peripheral curved surface of the rolled paper wrapped outer paper placed laterally and which is driven to ascend and descend, and each of the suction heads is pivotally supported. The swinging cylinder device is connected to one end and a suction pad support rod having a suction pad attached to the other end is provided. At the center of the suction pad support rod, a circular motion provided on the suction head perpendicular to the suction surface of the suction pad is provided. An arc of the arc orbit of the suction pad is formed on an upper surface of an outer peripheral curved surface of the wrapped paper wrapped outer paper at a position where the stroke of the suction head is controlled to be ascending and descending, where an arc movement guide surface is formed to be guided by a guide member. The outer sheet suction pad actuating device heart is located, by inclining the suction surface of the suction pad is always matched to the outer sheet periphery curved surface is obtained by solving the disadvantages of the prior art.

[0005]

With respect to the unsealing head, the position for cutting and unsealing with respect to the exterior paper is determined. Next, a pair of suction pads provided on the opening head are driven to move up and down. The suction pad is
For example, the stroke is regulated by a lifting / lowering upper limit adjusting bolt and a lifting / lowering limit adjusting bolt. When one end of the suction pad supporting rod is moved up and down by the expansion and contraction movement of the swinging cylinder device at the ascending and descending limit position of the suction head where the stroke is regulated, the circular motion guide surface formed at the center of the suction pad supporting rod causes suction. Guided by the circular motion guide member provided on the head, the center of the circular arc is placed on the upper surface of the outer curved surface of the exterior paper, and the circular rocking is performed perpendicular to the suction surface of the suction pad. When the suction surface of the pad comes into contact with the upper surface of the exterior paper when it comes into contact with the upper surface of the exterior paper, the suction function is not attenuated, and a sufficient suction floating function can be achieved. Next, when the suction head is raised,
The upper surface of the outer paper floats to form a gap between the outer paper surface and the web surface. Then, the upper surface of the exterior paper between the pair of suction pads is cut. After the cutting, when the cylinder device operates, the suction pad circularly moves along the circular orbit. As a result, the opening action of the opening of the exterior paper occurs.

[0006]

FIG. 2 is an enlarged side view of the suction head of the present invention corresponding to the pad P of FIG.
1 shows an operating device for a pair of exterior paper suction pads P, P arranged over an opening line shown in FIG. 1. A pair of suction heads 3A and 3B are mounted on a support member 2 fixed to the opening head H shown in FIG. Guide rail G (FIG. 6) for elevating and lowering the outer paper opening line, and cylinder devices 4A and 4B for driving the elevating and lowering.
The piston rods of the cylinder devices 4A and 4B are connected to the suction heads 3A and 3B via coupling fittings N and N, respectively, to drive the suction heads 3A and 3B up and down.

Since the suction head operating devices mounted on the suction heads 3A and 3B are symmetrical and have no structural difference, the structure of the suction head 3B will be described below. In FIG. 6, a guide member G1 guided by a guide rail G of a support member 2 fixed to the unsealing head H is attached to the suction head 3B that moves up and down, and the side surface of the suction pad support rod 5B is slid to a sliding liner 6B '. The guide side plate 6B that slides and guides via the pin 6 is connected by a pin 6 and attached.

As shown in FIG. 8, a suction pad P is attached to one end of a suction pad supporting rod 5B, and the other end of a piston rod 7B 'of a cylinder 7B pivotally supported by a suction head 3B at the other end. The tip is connected, and the center of the arc O is positioned substantially on the upper surface of the exterior paper 1 at the center, and an arc-shaped long hole 8B orthogonal to the suction surface of the suction pad P is formed through the center.
A pair of separation pins 9B, 9B, which are arc movement guide members, are protruded from the suction head 3B.

Therefore, as the piston rod 7B 'expands and contracts, the suction pad supporting rod 5B circularly moves between the imaginary line position and the solid line position in FIG.
Since the suction surface of the suction pad P is orthogonal to the circular arc curve and the center O of the arc is located substantially on the upper surface of the exterior paper, the suction surface of the suction pad P can be securely brought into close contact with the upper surface of the exterior paper 1.
Of course, as shown in FIG. 2, the suction pad P is previously attached to the suction pad supporting rod 5B such that the suction surface has a slope following the outer curved surface of the exterior paper.

It is to be noted that the present invention is not limited to the above-described embodiment, and may be an arc-shaped elongated hole 8B.
May be provided on the suction head 3B, and the arcuate motion guide members 9B, 9B may be provided on the suction pad support rod 5B, respectively, or may be replaced with a constrained sliding member having an arc-shaped uneven shape that complements each other.

Further, both ends of the pair of separating pins 9B, 9B may be supported by ball bearings as shown in FIG. 6, or both ends of the pins 9B, 9B may be fixed and the rollers may be rotatable on the pins. It may be fitted outside.

The vertical movement of the suction head 3B is shown in FIG.
As shown in FIG. 7, the stroke is regulated by the up-and-down upper limit adjustment bolt S1 and the up-and-down limit adjustment bolt S2, and the circular movement of the suction pad P is regulated by the upper-limit pivot adjustment bolt S3 and the lower-limit pivot adjustment bolt S4.

Therefore, in FIG. 1, the unsealing head H is lowered in the same manner as in the prior art to position the cutting and unsealing with respect to the exterior paper 1, and then the cylinder devices 4A and 4B shown in FIG.
To lower the suction heads 3A, 3B to the abutment position of the lifting / lowering limit adjusting bolt S2, and then reduce the piston rods 7A ', 7B' to operate the suction pad support rods 5.
By pulling up one end of A, 5B until it abuts against the lower rotation limit adjustment bolt S4, the suction pads P, P attached to the other ends of the support rods 5A, 5B move down in an arc and fall on the upper surface of the exterior paper 1. Adheres and adsorbs exterior paper. Each of the adjustment bolts is set in advance to a height at which the suction pad comes into contact with the surface of the exterior paper.

Next, when the cylinder units 4A and 4B are contracted and the suction heads 3A and 3B are raised to the contact position of the lifting and lowering upper limit adjustment bolt S1, the upper surface of the exterior paper 1 is suction-floated as shown in FIG. And opening member C between the paper web surface
Is formed to form a gap 10 into which the tip of the hole is inserted.

Then, the cylinder device A1 shown in FIG. 1 is extended and the cutter B is moved along the guide groove provided in the opening head H, so that the upper surface of the outer packaging paper between the pair of suction pads P, P floating by suction. Only disconnect.

After the cutting, when the cylinder device 7A is extended and the one suction pad P is lifted as shown in FIG. 4, a height difference is generated between the suction pad P and the other suction pad P, and a tearing action of the outer paper sheet opening occurs. Then, the outer paper cutting opening is reliably opened.

After the outer paper cutting opening is reliably cut by the tearing action, the cylinder device 7B is extended and the other pad P is pulled up as shown in FIG. 5, the cutting opening is expanded, and the outer paper is cut and opened. This facilitates insertion of the member C (FIG. 1).

The cutting and opening member C is pushed into the gap 10 by the extension operation of the cylinder device A2 (FIG. 1), and the suction negative pressure of the suction pads P is released.
By the advance of the opening head H, the cutting and opening member C scoops up and cuts the outer paper cut portion without damaging the surface of the web.

[0019]

According to the present invention, since the pair of suction pads are driven up and down by the cylinder device and circularly move along the constrained circular orbit, the movement of the suction pads is performed without free movement. The suction posture of the suction pad is always constant, and the above-described arc movement is performed by placing the center of the arc on the upper surface of the outer packaging paper and orthogonal to the suction surface of the suction pad. Is strong and reliable, and the pair of suction pads are independently moved up and down by the cylinder device. Therefore, even if the initial opening of the cutout portion of the exterior paper is incomplete, suction of each suction pad is performed. Since it is possible to generate an ascending drop which causes a tearing action at the time of ascending, the incision of the exterior paper can be surely and completely performed.

[Brief description of the drawings]

FIG. 1 is a cutaway explanatory front view of a wrapped paper-wrapped exterior paper.

FIG. 2 is a side view of the suction head of the present invention.

FIG. 3 is an explanatory view of a suction pad when a gap is formed according to the present invention.

FIG. 4 is an explanatory view of a suction pad at the time of the tear-opening operation of the exterior paper incision opening of the present invention.

FIG. 5 is an explanatory view of a suction pad when the outer paper cutting / opening member is pushed in according to the present invention.

FIG. 6 is a sectional view of a main part of a suction pad supporting rod of the suction head of the present invention.

FIG. 7 is a rear view of the suction head of the present invention.

FIG. 8 is an explanatory view of the operation of the suction pad support rod of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 External paper 2 Suction head support member 3A, 3B Suction head 4A, 4B Cylinder device 5A, 5B Suction pad support rod 6A, 6B Guide side plate 7A, 7B Cylinder 8A, 8B Arc-shaped long hole 9A, 9B Arc motion guide member O Arc Center P Suction pad H Opening head C Exterior paper cutting member B Cutting cutter

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Funeo Sonehara 4-17-96, Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Inside Tsubakimoto Chain Co., Ltd. (56) References JP-A-5-319642 (JP, A) ( 58) Field surveyed (Int.Cl. ⁶ , DB name) B65B 69/00

Claims (2)

(57) [Claims] 1. An apparatus for cutting and unsealing by wrapping a cut and unsealing end portion of a wrapped outer paper of a horizontally placed web with a pair of separation suction pads provided on an unsealing head, wherein the wrapped paper envelope and the horizontally laid web are placed on an unsealing head. Outer curved surface of paper
And a pair of suction heads whose strokes are independently regulated and driven up and down are provided. A swing cylinder device pivotally supported by each of the suction heads is connected to one end and suction is applied to the other end. the suction pad supporting rod fitted with pad provided in the central portion of the suction pad support rod to form a circular arc motion guide surfaces which are guided in a circular arc movement guide member provided on the suction head and perpendicular to the suction surface of Aspirate pad And the stroke limit position of the suction head whose stroke is regulated.
In front of the upper surface of the outer peripheral curved surface of the wrapped paper-wrapped exterior paper
An external paper suction pad actuating device in which the arc center of the arc track of the suction pad is located . 2. The external paper suction pad operating device according to claim 1, wherein the opening head is provided with upper and lower limit adjusting bolts for raising and lowering the suction head, and the suction head is provided with upper and lower limit adjusting bolts for swinging the suction pad support rod.