JPS5921351B2 - Method and apparatus for continuously pasting other short sheet materials onto sheet materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to paper, cellophane, plastic film, cloth,
While continuously feeding sheet materials such as glass wool,
The present invention relates to a method and apparatus for cutting other sheet-like materials, such as metal foil such as aluminum foil, into predetermined lengths and pasting them continuously and at equal intervals on the surface of the former.

Short pieces of metal foil are pasted continuously and at equal intervals on a sheet material such as paper, the material is cut or perforated near the metal foil, and then wrapped and placed around the opening. The technology for producing paper bags with metal foil pasted thereon has been developed as a manufacturing technology for bags that are used to cover fruits such as peaches, pears, and pudo grapes during cultivation to protect them from pests or block sunlight.

The present invention is generally used as a method and apparatus for shredding metal foil and pasting it onto paper materials as a pre-process of the bag making process in the process of manufacturing such bags. The present invention is not necessarily limited to this use, and may have independent uses as a method and apparatus for attaching other short sheet materials to a sheet material continuously and at equal intervals.

By the way, as a technology prior to the present invention, a heat roll is arranged in the upper stage and a suction roll is arranged in the lower stage, and the two are in contact with each other, and the paper material is fed between them. Equipped with a male blade roll that meshes with the blade roll,
A metal foil is fed between the male and female rolls and cut at equal intervals by the male blade roll, and the cut pieces are adsorbed to the female blade roll and brought into contact with the suction roll, and transferred to the suction roll. There is a technique in which the cut piece is further transferred to the lower surface of the paper material and adhered thereto upon contact with the heat roll.

In the above-mentioned prior art, since the paper material is constantly pressed between the heat roll and the suction roll, unnecessary tension is applied to the paper material, and as a result, the ratio of the feed amount of the paper material to the rotation amount of the suction roll There is a tendency for the pitch of the perforations made by the cutters installed in the subsequent process to operate in synchronization with the suction rolls to be misaligned with the pitches for adhering the metal foil.

If the speed is further increased, errors are likely to occur in the cutting between the male and female rolls and in the suction of the suction roll, so there is a limit to the operating speed and high speed adhesion is difficult. Other problems include that it is difficult to adjust the suction position of the suction roll, and because the metal foil is adhered to the bottom surface of the paper material, it is likely to peel off and fall. The present invention solves the above problems, and will be explained below with reference to the drawings.

In FIG. 1, A indicates a metal foil such as aluminum foil or other adhesive sheet, and the back surface of the adhesive sheet A is coated with a heat-sensitive adhesive.

The pasting sheet A is fed through a guide roll 1 between a pair of upper and lower feed rolls 2 and 7, pushed forward by a guide plate 3, and continuously fed onto a fixed blade 4. A cutter roll 5 is arranged adjacent to the front of the fixed blade 4,
Below the cutter roll 5, there is provided a feeding mechanism for a sheet to be pasted B, such as a paper material, which is fed in the same direction as the pasting sheet A. The feeding mechanism includes a heat roll 6 disposed directly below the cutter roll 5, heat rolls 7, 7' and presser rolls 8, 8 disposed downstream as necessary.
'', other guide rolls, drive rolls (not shown), etc. Next, the structure of the cutter roll 5 will be explained based on FIGS. 2 to 5.

A cutting blade 10 protruding from the roll surface is implanted on the circumferential surface of the cutter roll 5 at a symmetrical position with respect to the rotation axis 9, and a cutting blade 10 protruding from the roll surface parallel to the blade 10 is installed on one side of the cutting blade 10. A cut sheet piece adsorption member 12 made of rubber that protrudes and retracts from the guide piece 11 is fitted, and a support shaft 13 of the adsorption member 12 is pivotally supported by a bearing rotor 14 .

The bearing rotor 14 has its center below the rotation center axis of the cutter roll 5 and rolls on the circumferential surface of an eccentric cam 16 fixed to the frame 15. Reference numeral 17 designates an eccentric ring having the same cross-sectional shape and coaxiality as the eccentric cam 16, and connects the upper and lower suction members 12 via bearings 18, 18' formed at symmetrical positions on the outer peripheral surface of the eccentric ring.

Suction holes 19 are formed in the suction member 12 at appropriate intervals, and the suction holes 19 are bent at the lower end and communicate with a long hole 20 formed in the cutting edge of the cutting blade 10. A collection member 21 at the base end of the suction hole fixed to the roll 5 on the back side of the
It communicates with the through hole 22 of. A closing rotating plate 23 arranged annularly around the outer periphery of the eccentric cam 16 is fixed to the open end of the through hole 22, and an opening 24 corresponding to the through hole 22 is bored in the fixed part. ing. On the other hand, a groove 26 having the same width as the diameter of the opening 24 of the rotary plate 23 is provided on one side of the suction passage section 25 which is attached to the frame 15 via a bracket 34 and arranged annularly around the outer periphery of the eccentric cam 16. is bored over about half the circumference, and the rotary plate 23 is in airtight sliding contact with the opening surface of the groove 26, and only while the opening 24 moves on the groove 26, the through hole 22 of the suction hole collecting member 21 is opened. The suction hole 19 of the adsorption member 12 is made to communicate with an external air suction passage 27 to create a negative pressure.

As will be described later, the sheet piece 28 cut by the cutting blade 10 is sucked onto the top surface of the suction member 12 at the same time as cutting.
Since it is necessary to release the suction when the sheet piece 28 comes into contact with the surface of the sheet B to be pasted due to the rotation of the cutter roll 5, the groove 26 of the suction passage section 25 is opened in the rotating plate 23 before the cutter roll 5 starts cutting. 24, and the formation position of the groove 26 is determined so that the opening 24 is removed from the groove 26 after the adsorption member 12 is located at the lowest position and the cut sheet piece 28 comes into contact with the sheet B to be pasted. ing.

In addition, in the figure, 29 is a fixing pin of the cutting blade 10, 30 is a long hole for attaching the fixing pin 29 formed on the back surface of the suction member 12, 3
1 is a closing plate for an air hole 32 provided in the through hole 22, and 33 is a bearing for the rotating shaft 9. Since the cutter roll 5 is constructed as described above, when the blade 10 cuts the adhesive sheet A fed onto the fixed blade 4, the opening 2 of the rotary plate 23 is cut.
4 coincides with the groove 26, and the suction hole 19 and the suction passage 27 communicate with each other, so that a negative pressure is created in the suction hole 19, and the cut sheet piece 28 is suctioned to the top surface of the suction member 12. The suction member 12 rotates downward as the cutter roll 5 rotates while adsorbing the cut sheet piece 28, but as described above, the suction member 12 rotates on the eccentric cam 16, so as it moves downward, It protrudes from the cutting edge of the cutting blade 10 at the lowest position, and comes into contact with the upper surface of the pasting sheet B in this state. On the other hand, the opening 24 of the rotary plate 23 is removed from the groove 26 at that point, and the suction hole 19 and the suction passage 27 are cut off, so the suction force of the suction hole 19 is lost, and the adhesive is bonded by the heat of the heat roll 6. The sheet piece 28 that generated the force is transferred to the upper surface of the sheet B to be pasted and is pasted.

Ideally, the suction force of the suction holes 19 should not be reduced until the moment when the cut sheet 28 comes into contact with the adhered sheet B, and should be reduced to zero immediately after the contact. Even if it does not become zero, if the adsorption force is reduced to some extent, the adhesive force of the adhesive and the pressing force of the heat roll 6 will sufficiently displace the cut sheet piece 28 onto the sheet B to be adhered and adhere it. can do.

However, if you are concerned that the adhesion may be incomplete, the heat roll 7 and presser roll 8 may be placed in the latter stage as shown in FIG.
If necessary, another set of heat rollers 7'' and presser rolls 8'' are arranged, and the spacing between these and the diameters of the presser rolls 8, 8'', which are protruded from the presser rolls 8, 8'' are determined. By appropriately selecting the height of the holding pieces 33, 33',
The sheet piece B temporarily fixed between the front and rear heat rolls 6 and cutter rolls 5 can be further pressed between these rolls to complete the adhesion. Next, in the actual implementation of the present invention, the cutting width of the cut sheet piece 28 and the sticking pitch thereof need to be different depending on the requirements. This can be easily changed by changing the feeding speed of the pasting sheet A and changing the amount fed onto the fixed blade 4. Moreover, the sticking pitch can be easily changed by selecting the feeding speed of the sheet B to be stuck or the size of the diameter of the cutter roll 5.

The effects of the invention of the method of the present invention are generally the same as the effects of the invention of the device described below, but in addition, the effects of the invention of the method are similar to those of the invention of the device described below, but in addition, the effects of the invention of the method are similar to those of the invention of the device described below. The sheet is cut into a predetermined size by rotation of the cutter roll 5, and at the same time the cut sheet piece 28 is cut by the cutter roll 5.
When the cut sheet piece 28 comes into contact with the sheet B to be pasted by the rotation of the roll 5, the suction is released, and the cut sheet piece 28 is transferred onto the sheet B to be pasted and pasted. The structural requirements including the temporal element of "doing" minimize the waste of time from cutting to pasting, and the high speed of continuous and evenly spaced cut sheet pieces 28 makes pasting possible. . Since the pasting sheet feeding mechanism and the cutter roll act independently of each other, and the cutting position and pasting position are separated, the cutting width of the cut sheet piece can be freely adjusted by changing the feeding speed of the feeding mechanism. can be changed to

Furthermore, the effect of the invention of the device of the present invention is that by disposing the cutter roll 5 at the end of the feeding mechanism for the pasting sheet A, the cutting can be performed more reliably and at a higher speed than in the prior art cutting by meshing male and female blade rolls. Moreover, since the cut sheet piece 28 is sucked into the cutter roll 5 at the same time as cutting and is directly transferred and pasted onto the sheet B to be pasted, there is less wasted time from cutting to pasting, and the process is highly efficient. It is possible to operate at higher speeds and increase efficiency.

Furthermore, since the cut sheet pieces 28 are pasted by instantaneous contact of the cutter roll 5 with the pasted sheet B,
Unnecessary tension is not applied to the adhered sheet B, and as a result, the pitch of the perforation insertion position and cutting position in the subsequent process matches well with the adhesion pitch of the cut sheet piece 28, and this irregularity is minimized. Its effectiveness is outstanding compared to the prior art, which is said to have drawbacks. Furthermore, in the present invention, since the cut sheet piece 28 is adhered to the upper surface of the adhered sheet B,
Another advantage is that there is no need to worry about natural falls.

In addition, by changing the speed of the feed roll 2, the feeding speed of the pasting sheet A can be changed, so the cutting width of the cut sheet piece 28 can be freely changed, and the feeding speed of the pasting sheet B can be changed. By changing the diameter of the cutter roll 5 or selecting the diameter of the cutter roll 5, the sticking pitch can be changed as appropriate.

Further, the cleaning of the cutting blade 10 is automatically performed by the protrusion and retraction of the suction member 12, and the blade alignment with the cutting blade 10 can be easily achieved by adjusting the fixed blade 4.

[Brief explanation of drawings]

Fig. 1 is a vertical side view showing a simplified embodiment, Fig. 2 is a partially cutaway longitudinal front view of the cutter roll, and Fig.
4 is a bottom view of the figure, FIG. 4 is a view taken along the XX arrow in FIG. 2, and FIG. 5 is a view taken along the YY arrow of FIG. 2.

Claims (1)

[Scope of Claims] 1. A fixed blade is attached to the end of a feeding mechanism for a pasting sheet, a cutter roll is adjacent to the fixed blade, and a feeding mechanism for a pasting sheet is arranged below the cutter roll,
A member for adsorbing the cutting sheet that slides into contact with the cutting blade fixed to the circumferential surface of the cutter roll, and that is recessed from the cutting blade during cutting and protrudes from the cutting blade at a position in contact with the sheet to be pasted by an appropriate protruding and retracting mechanism. The pasting sheet and the sheet to be pasted are fed in the same direction by a device that connects or shuts off the suction holes formed in the member and the external air suction passage depending on the appearance and retraction of the member. First, the adhesive sheet is cut to a predetermined size, and at the same time as cutting, the cut sheet pieces are adsorbed to the suction member of the cutter roll, and when the cut sheet pieces come into contact with the target sheet due to the rotation of the roll, the suction is released. A method for continuously pasting other short sheet-like materials onto a sheet-like material, which method comprises displacing and pasting this material onto a sheet to be pasted. 2. A fixed blade is attached to the end of the feeding mechanism for the sticking sheet, and a cutter roll is adjacent to the fixed blade, and a feeding mechanism for the sticking sheet is provided below the cutter roll.
A member for adsorbing the cutting sheet that slides into contact with the cutting blade fixed to the circumferential surface of the cutter roll, and that is recessed from the cutting blade during cutting and protrudes from the cutting blade at a position in contact with the sheet to be pasted by an appropriate protruding and retracting mechanism. Implementing the method according to claim 1, characterized in that a suction hole formed in the member is provided with a suction hole formed in the member and an external air suction passage is communicated with or shut off depending on the protrusion or retraction of the member. Device.