JPS5835438Y2 - Perforation equipment for laminate sheets - Google Patents

Description

[Detailed explanation of the invention] This invention is made by laminating a heat-fusible sheet such as polyethylene and a non-fusible sheet such as paper, and melts and perforates the heat-fusible sheet layer of the laminate sheet, and applies a desiccant etc. The present invention relates to a perforation device for creating a raw material for bags to be enclosed, and the purpose thereof is to provide a perforation device that can reliably and effectively melt and perforate a heat-fusible sheet of a laminate sheet.

Next, an embodiment of the present invention will be explained according to the drawings. In the drawing, L is a laminate sheet in which a heat-fusible sheet and a non-heat-fusible sheet are laminated, and the sheet is unwound from the roll L1 on the right side of the figure. It travels to the left and is wound onto roll L2.

Reference numeral 2 denotes a lower feed roller horizontally suspended at the lower end of the punching device 1 installed opposite to the running laminate sheet L,
It is rotatably supported by a frame (not shown) via a shaft 2a, and a roller block 2b is mounted near the center of the shaft 2a.
2b are fitted in a spaced manner, and lower sprocket wheels 3, 3 are fitted near both ends of the shaft 2a, respectively.

Reference numeral 4 denotes an upper feed roller which is horizontally suspended diagonally to the upper right of the lower feed roller 2 in the figure, and is rotatably supported by a frame via a shaft 4a, and a roller block is provided near the center of the shaft 4a. 4b to 4b are fitted in a spaced manner, and an upper sprocket wheel 5 is located near both ends of the shaft 4a.
, 5 are fitted on each side.

Reference numeral 6 denotes a pulley fitted to the left end of the upper feed roller 4 as shown in the figure, and a drive shaft 7 driven by a drive mechanism (not shown).
The rotation of pulley 8. It is transmitted to the upper feed roller 4 via the belt 9.

Reference numeral 10.10 denotes a chain which is attached to the rain sprocket wheel 3 and the rain sprocket wheel 5, respectively, and is provided with an inverted link play NOa.

Reference numerals 11 to 11 are crosspieces that are horizontally suspended between the left and right chains 10 in parallel, each of which is formed in the shape of a strip, and both ends of which are connected to the ring plate 10a of the chain 10 by screws 12 to 11, respectively. 12 pieces are placed and the upper and lower feed rollers 4 and 2
An endless perforated band B that is slanted and circatably hung on the
is formed so that its inclination angle can be adjusted, and the perforated zone B
The lower folded end Bl is the running □nate sheet L
It is set up opposite.

Numerals 13 to 13 are a group of protrusions protruding from the surface of each crosspiece 11, and in this example, they are formed in a substantially truncated conical shape, and each crosspiece 11 circulates around the folded end B+ of the perforation band B. Sometimes each crosspiece 11 is temporarily folded in the middle of folding □Nate sheet L
At the same time, each protrusion group 13 of each crosspiece 11 moves in parallel with the traveling laminate sheet L while being in synchronization with and in contact with the traveling laminate sheet L in the middle of its folded progress.

14 is a heater for preheating the protrusion group 13 to the melting temperature of the heat-fusible sheet T prior to contact with the laminate sheet L, and the heater circulates around the entrance to the folded end B1 of the perforated band B. When the protrusion group 13, which is disposed opposite to the crosspiece 11, comes into contact with the laminate sheet L, the heat-fusible sheet T is melted and a melt hole YY is formed.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, the band-like crosspieces 11 having the protrusion groups 13 are connected in parallel to form an endless perforated band B, and the folded end B1 of the perforated band B is placed opposite to the laminate sheet L. Therefore, when each crosspiece 11 circulates around the folded end B1, the advancing posture of each crosspiece 11 temporarily becomes parallel to the laminate sheet L, and the protrusion group 13 within each crosspiece 11 As a result of acting as one, the protrusion group 13 moves in parallel with the laminate sheet L while progressing in a folded manner, forming a non-melting sheet) P
The heat-fusible sheet T can be melted and perforated without damaging the laminate sheet T, and the projection group 13 rapidly changes from a contact start state to a contact state with respect to the laminate sheet L, and from a contact state to a detached state, so that the perforation operation is effective. The melting holes Y-Y can be reliably formed in the heat-fusible sheet T.

In particular, in this example, since the perforated band B is formed in an endless shape by the left and right chains 10, both chains 10. The length of the perforated band B can be freely expanded and contracted by expanding and contracting, and the position of the upper feed roller 4 can be rotated using the axis of the lower feed roller 2 as a fulcrum to adjust the inclination angle of the perforated band B with respect to the laminate sheet) L. That is, by adjusting the approach angle a of the protrusion group 13 into the folded portion B1, it is possible to select conditions that do not apply improper tension to the laminate sheet L when the protrusion group 13 moves in contact with the laminate sheet L. It has the advantage that a melting hole YY having a stable size and shape can be formed in the heat-fusible sheet (T) without damaging the non-heat-fusible sheet (P).

Furthermore, even if a part of the crosspiece 11 forming the perforated band B is damaged or a part of the protrusion group 13 is worn out, the crosspiece 11 can be partially replaced. This has the effect of eliminating the disadvantage of drilling mistakes, constantly maintaining the drilling performance of the entire perforating band B, and extending the useful life of the perforating band B.

That is, the present invention creates an endless perforated band by connecting in parallel a plurality of crosspieces formed in a band shape and each having a group of protrusions protruding from the surface for melt perforating the sheet. At the same time, this perforated band is hung so as to be able to circulate between a pair of rollers, one of the folded ends of the perforated band is placed opposite to a running laminate sheet, and then the folded end is A heater for preheating the protrusion group prior to drilling is provided on the crosspiece near the entrance to the hole, so that when the crosspieces circulate around the folded end, each protrusion on each crosspiece As the group moves in a folded manner, the laminate sheet is moved in parallel while coming into contact with the laminate sheet, melting and perforating the laminate sheet, thereby making it possible to reliably and effectively perforate and process the laminate sheet. This is an extremely excellent idea as a perforation device for laminated sheets because it can create a raw fabric with molten holes in a stable shape.

Note that the crosspiece 11 of the above embodiment may be replaced with the chain 10 and may be connected by other means such as a belt or a connecting ring.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic 1u11 side view showing the entire device, Fig. 2 is a perspective view showing a partially broken perforator band, and Fig. 3 is a perforation. FIG. 4 is a side view showing an enlarged part of the band, FIG. 4 is a sectional view taken along the line X--X in FIG. 3, and FIG. 5 is a sectional view of the laminate sheet. 1...Drilling device, 2,4...Feeding loan, 11...
・Piece piece, 13...Protrusion group, 14...Vinita, B・
...Perforated band, B1...Folded end, L...Laminated sheet.

Claims (1)

[Scope of utility model registration request] A practical group for melt-perforating a laminate sheet (formed in the form of a strip) connects in parallel a plurality of crosspieces each protruding from the surface to form an endless perforation band, and also forms an endless perforation band. A strip is hung between a pair of rollers so as to be able to circulate, and is provided opposite to a laminate sheet running on one folded end of the perforated strip. A heater for preheating the protrusion group prior to drilling is provided in opposition, and when each of the crosspieces circulates around the folded end, the laminate sheet is heated while each protrusion group of each crosspiece progresses in a folded manner. □ A perforation device for a laminate sheet, characterized in that the perforation device is configured to melt and perforate a laminate sheet by integrally moving in parallel while in contact with the laminate sheet.