JPH0364369B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is for unsealing and cutting an exterior paper that tightly wraps a roll of newsprint or the like without any gaps, by mechanical means without manual intervention. It is used as part of a device that automatically feeds paper webs to rotary presses at newspaper companies, etc.

Conventional technology In the past, in the process of opening and cutting the wrapping paper, a worker holding a bamboo spatula for opening and cutting would lift the folded part of the edge of the wrapping paper and use the tip of the bamboo spatula to connect the inner circumferential surface of the outer wrapping paper and the outer circumferential surface of the web paper. A bamboo spatula was inserted between the paper rolls and pushed in the axial direction of the paper roll to open and cut the paper. That is,
It was done manually.

Problems to be Solved by the Invention However, when feeding a roll of newsprint to a rotary press that prints newspapers, etc., there is no need to manually open and cut the wrapping paper and peel and remove the wrapping paper from the roll. Everything was automated and no manual labor was required.

Therefore, by automating the unwrapping and cutting of the outer wrapping paper and the peeling and removal work of the outer wrapping paper, the work of supplying web paper to the rotary press can be made into a completely automated, integrated process. The purpose is to shift the unpacking and cutting work from manual work to automated mechanical work.

Means for Solving the Problems In order to achieve the above object, the present invention is directed to the direction connecting the intersection of the opening/closing gripper that grips the folded edge of the wrapping paper that tightly wraps the web without any gaps and the wrapping paper opening/cutting cutter. an unsealing head attached to the opening head, an elevating member to which the unsealing head is rotatably attached to expand the folded edge of the outer wrapping paper, and the lifting member is moved in the axial direction of the outer wrapping paper to open the outer wrapping paper with the cutter. The cutting member is equipped with a running member for cutting.

Operation: The unsealing head descends from above the folded side edge of the wrapping paper that tightly wraps the roll paper without any gaps, and stops at the side edge position.The unsealing head is rotated downward, and the opening/closing gripper attached to the unsealing head is used to seal the wrapping paper. Grip the folded side edge of the paper and rotate the opening/closing head upward to open the side edge and create a slight gap between the inner circumferential surface of the side edge of the wrapping paper and the outer circumferential surface of the web side edge. By moving the unsealing head in the direction of the web axis, the tip of the outer paper opening/cutting cutter is inserted into the small gap, and then the grip of the opening/closing gripper is released and the unsealing head is moved along the web axis. Run it in the direction to open and cut the outer wrapping paper.

When the unsealing and cutting process is completed, the unsealing head returns to its original position and waits for the arrival of the subsequent web wrapped in the wrapping paper, and the same operation is repeated.

Embodiment FIGS. 1 to 4 show an embodiment of the present invention. In FIG. 1, a web tightly wrapped with wrapping paper 1 is placed on a pair of spaced apart rotating rollers R, R. Above the web, there is a running rail 2 constructed with a frame in the direction of the axis of the web, and the running rail 2
The running body 3 that reciprocates on the running body 3 is screwed to sliding holders 3a, 3a suspended from the running rail 2 so as to be able to run freely, and a rotating drive ball screw shaft 4 installed along the running rail 2. A nut body 3b is attached thereto, and the traveling body 3 reciprocates on the traveling rail 2 by forward and reverse driving of the rotating ball screw shaft.

The traveling body 3 also has a power source E located at a fixed position.
A movable end E' of a power supply cable 5 connected to is attached to supply power to a cylinder 6 attached to the traveling body 3, and an elevating member 7 is attached to the tip of a piston rod 6' of the cylinder 6. , the lifting member 7
is guided up and down by a plurality of guide rods G.

An opening head 8 shown in FIG. 3 is rotatably attached to the lifting member 7. That is, a pair of swing arms 8a, 8a (indicated by a chain line in FIG. 1) have their free ends fixed to the opening head 8 and their base ends fixed to a pin shaft 7a rotatably supported on the elevating member 7.
The piston rod of a swing cylinder 7b pivotally supported on the elevating member 7 is connected to the free end, and the swing cylinder 7b is swung around the pin shaft 7a by a swing lever 7c whose base end is fixed to the pin shaft 7a. I can do it.

The opening head 8 is located at the folded side edge 1a of the wrapping paper 1.
It has an opening/closing gripper 9 for gripping the paper and a cutter 10 for opening and cutting the wrapping paper.

The opening/closing gripper 9 has a segment 9' that engages with a rack 11' carved at the tip of a piston rod of a cylinder device 11 fixedly attached to the opening head 8, and the segment 9' is moved into the opening/closing gripper by the expansion and contraction of the piston rod. The opening/closing gripper 9 is rotated around a shaft 8' rotatably attached to the opening head 8 to open/close the opening/closing gripper 9.

The opening cutting cutter 10 has a triangular cross section with an inclined ridge line 10' for cutting the wrapping paper, and is attached to a piston rod 12' of a cylinder 12 fixed to the opening head 8.
One free end of a rotating rod 14 is rotatably supported by a pin shaft 14a on a sliding piece 13 attached to the tip of the sliding piece 13, and a guide is rotatably supported at one free end by a pin shaft 14b. A roller 14c is attached.

The guide roller 14c is pressed against an inclined cam surface 16 formed on a surface facing the sliding guide surface 15 of the sliding piece 13. That is, the sliding piece 13
One end of the wire spring 17 wound around the pin shaft 14a is fixed to the sliding piece 13, and the other end is fixed to the opening cutting cutter 1.
0, the wire spring 17 urges the rotation rod 14 to rotate counterclockwise to press the guide roller 14c against the cam surface 16 in the figure. At the same time, the wire spring 17 biases the unsealing cutter 10 to rotate counterclockwise around the pin shaft 14b, and the biasing force causes the unsealing cutter 10 and the rotating rod 14 to rotate. To avoid excessive rotation beyond a straight line,
A stopper surface 14' is formed on the rotating rod 14, with which the back surface 10' of the opening cutter 10 comes into contact.

Therefore, when the sliding piece 13 moves backward by the operation of the piston rod 12', the guide roller 14c is pushed down and guided clockwise by the inclined cam surface 16, so that the unsealing cutter 10 is moved by the biasing force of the wire spring 17. The guide roller 14c is guided by the horizontal cam surface 16' formed continuously with the inclined cam surface 16, so that the unsealing cutter 10 and the rotary rod 14 are moved upward. It becomes a straight line and retreats on the sliding guide surface 15.

Also, by operating the piston rod 12', the sliding piece 1
3 is advanced, the unsealing cutting cutter 10 and the rotating rod 14 are guided by the inclined cam surface 16 and rotate counterclockwise while remaining in a straight line due to the biasing force of the wire spring 17, as will be described later. When the bottom surface of the unsealing cutter 10 comes into contact with the outer peripheral surface 18' of the paper roll 18 as shown in the figure, the unsealing cutter 10 releases the wire spring 1.
7, the unsealing cutter 10 and the rotating rod 14 are bent, and the bottom surface of the unsealing cutter 10 is pressed against the outer circumferential surface 18' of the web 18. It will be done.

Therefore, the operation of the opening head 8 is shown in Fig. 4a--
g will be explained. Note that the rotating arm 8a is shown with a dashed line.

The traveling body 3 on the traveling rail 2 is located above the side edge of the wrapping paper 1 which covers the web and is placed on the rotating rollers R,
is extended to lower the elevating member 7 to a predetermined position, the swinging cylinder 7b is extended and the swinging arms 8a, 8a are pivoted downward via the swinging lever 7c, and the opening/closing gripper 9 is moved to the folded side of the wrapping paper. Directly face the edge 1a (see Figure 4b).

Next, the traveling body 3 is moved slightly to the left as shown in FIG. 4c, the folded edge 1a of the wrapping paper is positioned within the opening of the opening/closing gripper 9, and the cylinder device 11 is activated as shown in FIG. 4d. Then, the side edge 1a is gripped by the opening/closing gripper 9, and as shown in FIG. Since it is lifted upward while being gripped by the gripper 9, a part of the side edge of the wrapping paper 1 is torn.

Next, as shown in FIG. 4f, the cylinder 12 is extended and the opening/closing gripper 9
The wrapping paper 1 is lifted up by the grip of the wrapping paper 1 and inserted between the back side of the torn wrapping paper 1 and the outer circumferential surface 18' of the web 18.

Therefore, the tip of the unsealing cutter 10 is pushed between the outer wrapping paper and the web paper, so that
As shown in , when the cylinder device 11 is actuated to release the grip of the opening/closing gripper 9 and the traveling body 3 is moved to the left on the traveling rail 2, the opening/closing cutter 1 is released.
0, the wrapping paper 1 is cut in the axial direction of the paper roll and the wrapping paper 1 is opened.

Then, the unsealing cutter 10 is raised together with the elevating member 7 by the operation of the cylinder 6, and the traveling body 3 moves to the right on the traveling rail 2, so that the unsealing head 8 returns to the original position shown in FIG. 4a. It waits at the wrapping paper opening/cutting position of the next roll of paper, and thereafter repeats the same operation.

Effects of the Invention The present invention enables mechanical operation without any manual intervention by moving an opening head having an opening/closing gripper and an opening/cutting cutter in the direction of the axis of the wrapping paper, which tightly wraps the wrapping paper around a fixed wrapping paper without any gaps. This makes it possible to open and cut the wrapping paper using the machine, and it is useful for automating the integrated work of supplying and replenishing rolls of newsprint etc. to rotary presses, etc., and its effects are significant.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a schematic overall front view of the outer paper opening and cutting device, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a cross-sectional view of the main parts of the opening head. The enlarged front view and FIGS. 4a to 4g are explanatory views of the operation of the opening head. 1... Exterior paper, 1a... Exterior paper folded side edge,
2... Traveling rail, 3... Running body, 7... Lifting member, 8... Opening head, 9... Opening gripper, 1
0...Opening and cutting cutter, 18...Wrap paper.

Claims (1)

[Claims] 1. An opening head installed in the direction connecting the intersection of an opening/closing gripper that grips the folded edge of the wrapping paper that tightly wraps the web without any gaps and an opening/cutting cutter for the wrapping paper, and a lift mechanism in which the opening head is rotatably installed. member, and a running member that moves the elevating member in the axial direction of the wrapping paper, the folded side edge of the wrapping paper is gripped with an opening/closing gripper, the opening head is rotated, the side edge is opened, and the traveling member is moved. A device that unseals and cuts the wrapping paper by moving a member and inserting the tip of the cutting cutter between the inner circumferential surface of the edge on the outer wrapping paper side and the outer circumferential surface of the rolled paper.