JPH028136A - Peeling knife member in automatic protective peeling device for newspaper rotary press - Google Patents

Abstract

PURPOSE:To disuse any work by man power as well as to peel a sheet of protective paper automatically and accurately just before paper splicing work by installing a second knife whose cutting edge is somewhat retreated away and set up higher in its height than a first knife. CONSTITUTION:In an interval between both knife mounting parts 45 and 37, a second knife 46 has its cutting edge somewhat retreated away from that of a first knife 38, making a difference in height with the first knife 38, and it is fixed with a screw 47. When a first shaft 20 is rotated, a shoe 43 on the knife mounting part 37 comes into contact with a paper surface of a web 6b, while a cutting edge of the first knife 38 is set to a position where protective paper is peelable. Consequently, when a starting end of the web 6b rotating at low speed comes nearer to the knife mounting part 37, it passes through the shoe 43 successively from protective paper 80 of a duplex adhesive tape at both V-shaped side edges, and when being floated up in a small clearance, it is scooped up by the cutting edge of the first knife 38 and then it rides over the second knife 46, thus it is peeled after being scooped up in succession.

Description

[Detailed description of the invention] Child! The present invention relates to a peeling knife member for an automatic protective paper peeling device of a newspaper rotary press.The present invention relates to a peeling knife member for an automatic protective paper peeling device of a newspaper rotary press, as shown in FIG.

When the newspaper roll attached to the three-pronged rotating device 10L and unraveling during printing becomes smaller in diameter and a new paper roll needs to be spliced, the terminal end of this small-diameter rolled paper 102a is attached to the three-pronged rotating device 101. The adjacent roll 102b
The paper is spliced at the beginning of the paper so that the paper can be fed continuously. In the figure, 103 is a drive belt, 104 is a base arm, and 105 is a rotary press.

By the way, as a preliminary preparation for the paper splicing as described above, the double-sided adhesive tape 107 affixed to the V-shaped portion formed at the starting end of the web 102b and the protective paper of the tab paper 108 are peeled off. It is necessary to keep it. Conventionally, this protective paper was peeled off manually by an operator immediately after the web was attached to the three-prong rotating device 101.

As mentioned above, in the past, the protective paper was removed manually immediately after the web was attached to the three-prong rotating device, which resulted in extremely poor work efficiency.

Moreover, it takes time from the end of the peeling operation to the paper joining operation, and the surface of the adhesive layer of the double-sided adhesive tape 107 and the tab paper 108 from which the protective paper has been peeled may dry, or paper powder etc. may adhere to it, causing the adhesive strength to deteriorate. There was a problem that the paper could not be spliced properly due to shortages.

Therefore, the present invention provides a peeling knife member for an automatic protective paper peeling device that eliminates the above-mentioned manual work and can automatically and reliably peel a protective paper such as double-sided adhesive tape immediately before paper splicing work. The purpose is to

In order to achieve the above-mentioned purpose, this invention includes a first knife, a second knife whose cutting edge is slightly set back from the cutting edge of the first knife, and whose height is higher than that of the first knife. It is characterized by having the following.

Kui---”- In the peeling knife member as described above.

After the protective paper such as double-sided adhesive tape is scooped up by the cutting edge of the first knife, it rides on the second knife and is continuously scooped up and reliably peeled off.

In Figure 1, reference numeral 1 indicates a protective paper automatic peeling device, which is installed on the opposite side of the three-prong rotating device 2 to the newspaper roll carrier 3.

As shown in FIG. 2, the peeling device 1 has a pair of Jl 17, 7' erected on a machine stand 5 at an interval approximately corresponding to the axial length of the newspaper rolls 6a, 6b... ing. legs 7,7
The upper end of the support arm 8, 8' has a pin 9 at one end.
It is pivoted at 9'. Arms 8, 8' have legs 7, 7
The tip of the rod 11.11' of the operating cylinder to, 10' installed adjacent to the cylinder 10.
10' causes the arms 8, 8' to swing between a standby position shown by chain lines in FIG. 1 and an operating position shown by solid lines. A hollow peeling box 12 is mounted between the other ends of the arms 8 and 8', with both side walls supported by pivot shafts 13 and 13'. Reference numeral 14 is a connecting rod that connects the other ends of the arms 8 and 8'.

As shown in FIG. 3.4, the peeling box 12 has a first hollow box 15 whose front end face is open, and a front face which is open so that the open front side is located opposite the rear face of the first hollow box 15. A second hollow box 16 serving as a protective paper collection box is disposed in the second hollow box 16.
It is connected to a hollow box 15, and the edge of the bracket is fastened with a clasp 18, and by releasing the clasp 18, the first
The hollow box 15 can be opened and closed using a hinge 17 as a fulcrum.

Inside the first hollow box 15, a first shaft 20 and a second shaft 21 are supported in parallel at a predetermined interval at positions facing the front opening. Part 2
2.23 bosses are fitted and attached. Arm portion 22.
At the tip of 23, the first hollow box 1 is attached via a support stand 25, 26.
The rod 29. of the working cylinder 27.28 is fixed to the rod 29.5.
30 is pivoted, and the operation of the cylinders 27, 28 causes the first. The second shafts 20 and 21 are adapted to be rotated. 1st. On the second shafts 20 and 21, a protective paper peeling knife member 32 for the double-sided adhesive tape and a protective paper peeling knife member 33 for the tab paper are attached to paper rolls 6b, 6'b, and 6#b having different starting ends as shown in FIG. As shown in FIG. , further comprising a first knife member 35 and a second knife member 36. 1st
The knife member 35 has a knife attachment part 37 that is fitted and inserted so as to be rotatable around the first and second shafts 20 and 21, and a first knife 38 is attached to the attachment tip of the knife attachment part 37 with a presser plate. 3
9 and is mounted parallel to the shaft 20.21 with screws 40, and with a small gap in front of the first knife 38, when the protective paper is peeled off by the first knife 38,
An L-shaped shoe 43 that presses the paper surface of the paper web is also attached with screws 44 parallel to the shaft 20.21. The second knife member 36 is connected to the shaft 2 at a predetermined distance from the knife mounting portion 37.
0.21, and a second knife 46 has a knife attachment part 45 that is rotatably inserted into and attached to the attachment part 37, and a second knife 46 has a cutting edge slightly smaller than the cutting edge of the first knife 38 between the attachment part 45 and the attachment part 37. It is moved backward and fixed with a screw 47 with a height difference H from the first knife 38. The reason why the blade edge of the second knife 46 is slightly set back from the blade edge of the first knife 38 is because it is necessary to further continuously scoop up the protective paper that was scooped up with the blade edge of the first knife 38, and also because of the difference in height. The reason for adding H is to prevent it from coming into contact with the paper surface of the web and staining it.

Reference numeral 50 denotes a suppressing piece that is attached to the shaft 20.21 between the two mounting parts 37.45 by being unrotatably fitted with a set screw 51. Figure 5 (E
) is interposed with a compression spring 53 that biases in the direction indicated by the arrow. The compression spring 53 is inserted into the recessed hole 5 formed in the piece 50.
4 with one end abutting the second knife 46.

As shown in FIG. 6, the protective paper peeling knife member 33 for the tab paper is different from the protective paper peeling knife member 32 for the double-sided adhesive tape in that it does not have a second knife member and has a first knife member 7.
The main difference is that the first knife of the press piece 50 is not parallel to the axis 20.21 but is mounted obliquely;
Since they are almost the same except for some configurations such as the mounting position, similar parts will be given the same reference numerals and explanations will be omitted. The reason why the peeling knife member 33 has the above-mentioned difference is that the length of the tab paper is shorter than that of the double-sided adhesive tape, and the tab paper is attached parallel to the rotating direction of the web, and the first This is because if the cutting edge of the knife 38 is parallel, it will be difficult to peel off.

In Fig. 7, a, b, Q,
A typical example of the starting end of a web is shown in which a plurality of double-sided adhesive tapes 80 of different lengths are attached at predetermined intervals as shown in d and e, and as shown in (A), the tops of the V-shaped parts are aligned with each other in the rotational direction. In the case of webs 6b, 6'b, 6''b with starting ends that overlap, a stripping knife element 32.3 arranged on the first shaft 20
3 corresponds to the roll paper 6"b, 6"'b in which the V-shaped part itself has a starting end that is biased to one side or the other side of the rotation direction as shown in (B) and (C). Peeling knife elements 32, 33 arranged on the two shafts 21 correspond thereto.

Since the tab paper 90 is attached to one place on the top of the V-shaped portion, it is omitted from FIG. 7.

In FIG. 3, 65, 66, and 67 are provided on the swinging frame described later, and detect marks attached to the protective paper of the tab paper 90 (in the embodiment, the upper surface of the protective paper is colored). The mark sensor 68.69 is a limit switch 72.69 in FIG. 4 that detects when the guide roller 70 of the peeling box 12 brought into the operating position via the arm 8.8' comes into contact with the paper surface of the web 6. 73 is provided in the first hollow bowl 15, and the arm 8.8
' is swung by the operating cylinder 10.10' to the operating position, the rollers protect both corners of the first hollow flute 15 from hitting the paper surface of the web 6 and damaging it. The roller 72 is supported by a swing frame 75, and the other roller 73 is supported by the first hollow box 15. Swing frame 7
5 is pivotally supported by a shaft 76, and is biased by a spring 77 so that the roller 72 protrudes toward the front opening side of the first hollow box 15.

Next, the operation of the above embodiment will be explained.

When splicing newspaper rolls, splicing is performed at the starting end of the roll 6c at position A in FIG. A new web 6d is fed by the transport cart 3 and attached to the removed position at position B, while a new web 6d at position A is attached to the web 6b at position C to be spliced next. Double-sided adhesive tape 80 as a preparatory work during the printing of
The protective paper of the tab paper 90 and the tab paper 90 are peeled off.

Regarding the peeling work of the protective paper i> Rolling paper 6b, 6' having the starting end shown in FIG. 7(A)
b, 6'b, when the start switch is turned on, cylinder 10.10'
is actuated, and the arm 8.8' is swung from the standby position to the operating position. When the arm 8.8' reaches the operating position, the guide roller 70 of the peeling box 9 comes into contact with the paper surface of the web 6b at position B, and this is detected by the limit switches 68 and 69. The detection of the limit switches 68 and 69 drives a motor (not shown), and this driving force is transmitted from the web center to both ends of the web 6b, so that one web 6 is tightly wound as shown by the arrow in Fig. 1.7. The mark on the tab paper 90 stuck to the top of the V-shaped portion at the starting end of the roll of paper 6 is detected by the mark sensor 66 located at the corresponding position in the rotational direction of the roll of paper 6. Ru.

Upon detection by the mark sensor 69, the cylinder 27 is actuated and the first shaft 20 is rotated. When the first shaft 20 is rotated, the suppressing piece 50 integrated with the first shaft 20 is tightened by the set screw 51.
, the piece 50 , the compression spring 52 and the second knife 46
The knife mounts 37 and 45 that are connected to each other through
When the first knife 38 comes into contact with the paper surface of b, the cutting edge of the first knife 38 is at a position where the protective paper can be peeled off. Therefore, when the starting end of the web 6b rotating at a low speed approaches the knife attachment part 37, the shoes 43 are sequentially removed from the protective paper 81 of the double-sided adhesive tape 80 on both sides of the V-shaped part, as shown in FIG. After it passes through and floats up in a small gap, it is scooped up by the cutting edge of the first knife 38 and then rides on the second knife 46 where it is continuously scooped up and peeled off.

As shown in FIG. 9, the protective paper 91 of the tab paper 90 is also
The first knife 3 passes through 3 and floats up in the small gap.
It is scooped up by the cutting edge of No. 8 and peeled off. The peeled double-sided adhesive tape 80 and the protective paper 81.91 of the tab paper 90 are the first
It is stored in a hollow box 15. 8 in Figure 8 (B) and (C)
2 is the double-sided adhesive tape 8 exposed after the protective paper 81 is peeled off.
0 adhesive layer.

When the peeling of the protective paper 81, 91 is completed, this is detected by a sensor (not shown) provided in the knife attachment portion 37. Then, as a result of the detection by this sensor, the cylinder 27 returns to its pre-operation state, the first shaft 20 is rotated in the opposite direction, and the shoe 43 on the knife attachment part 37 moves away from the paper surface of the web 6a.
Moreover, the cutting edge of the first knife 38 is at a position where the protective paper cannot be peeled off. At the same time, the cylinders 10 and 10' are brought into a pre-operation state, and the arm 8°8' is swung in the opposite direction to return to its original standby position, and the drive of the motor is also stopped, and the protective paper is peeled off. The rotation of the rolled paper 6a also stops. When the arms 8, 8' return to the standby position, the peeling box 12 is reversed as shown by the chain line in FIG. will be moved to The protective paper 81.91 transferred to the second hollow box 16 can be removed by removing the stopper 18 and opening the second hollow box 16.
It falls and is collected from the front opening of the second hollow box 16.

i〉Wrap paper 6 having the starting end shown in FIGS. 7(B) and (C)
In the case of "b, 6" b In this case, the mark on the tab paper 90 is detected by the mark sensor 65 or 67 located at the corresponding position in the rotational direction of the web, and the cylinder 28 on the second shaft 21 side is actuated. 2nd axis 2
This differs from i> in that peeling knife members 32 and 33 of I are used, but the overall operation other than this is the same as i>.

The operation of each member in i>, ii> is controlled by a control member (not shown) made of known electrical components.

Kenkunza is here This invention consists of the above-mentioned configuration.

The double-sided adhesive tape at the beginning of the newspaper roll and the protective paper on the tab paper can be automatically peeled off, which previously had to be done manually, by first scooping up the protective paper with the edge of the first knife, and then removing the protective paper from the tab paper. Since this scooped protective paper is continuously scooped up with the second knife, there are excellent effects such as reliable peeling of the protective paper.

[Brief explanation of the drawing]

FIG. 1 is a side view of an automatic protective paper peeling device and a three-pronged rotating device showing an embodiment of the present invention, FIG. 2 is a front view of the automatic protective paper peeling device, and FIG. This shows the correspondence of the double-sided adhesive tape for the roll paper shown in Figure 7.
A) is a drawing showing the arrangement of multiple double-sided adhesive tapes of different lengths, (B) is an enlarged front view of a peeling box, Figure 4 is an enlarged side view of a partially broken peeling box, and Figure 5 is a double-sided adhesive tape. It shows the protective paper peeling knife member of the tape, (A) is an enlarged front view with some parts omitted, (B) is a side sectional view along the VB-VB line of (A), and (C) is a side sectional view of (A). A side sectional view along the VC-VC line,
(D) is a side sectional view along the (A) (7) VD-VD line, (E) is a side sectional view along the VE-VE line of (A), and Figure 6 is a protective paper peeling knife for the tab paper. FIG. 7(A) is an enlarged front view showing the member. (B) and (C) are drawings showing examples of paper rolls with different starting ends, Fig. 8 and Fig. 9 are drawings for explaining the operation, respectively, and Fig. 10 is a timing diagram showing the operation timing of the main parts. The chart, FIG. 11 is a schematic side view showing a conventional example, and FIG. 12 is a perspective view of the paper roll. 1... Protective paper automatic peeling device 2... Three-pronged rotating device 3... Transport trolley 8.8'...
Support arm 10.10'... Working cylinder 12...
Peeling box 20...first shaft 21...second shaft 27, 28...operating cylinder 32...
... Protective paper peeling knife member 33 of double-sided adhesive tape...
Tab paper protection paper peeling knife member 35...first knife member 36...second knife member 37.45...knife attachment portion 38...first knife 43...shu 46...
Second knife 53...Compression spring 80...Double-sided adhesive tape 90...Tab paper 81.91...Protective paper Patent applicant Ikegai Goss Ryo Co., Ltd. Figure 8 (A) (B) (C) Month 10 Leap

Claims (1)

[Claims] 1. The unwinding start end is cut from both side edges toward the center to form a V-shaped part, and a plurality of double-sided adhesive tapes are pasted at predetermined intervals on the upper surface of the edge of this V-shaped part, and A newspaper roll is attached to a trifurcated rotating device with tab paper pasted between the upper surface of the top of the character part and the paper surface of the starting end. The device is used in an automatic protective paper peeling device for a newspaper rotary press that automatically peels off the protective paper of the double-sided adhesive tape and the tab paper before paper is spliced using the double-sided adhesive tape. A peeling knife member comprising a knife and a second knife whose cutting edge is slightly set back from the cutting edge of the first knife and whose height is higher than that of the first knife.