GB1605071A

GB1605071A - Device for perforating a moving sheet

Info

Publication number: GB1605071A
Application number: GB2205678A
Authority: GB
Original assignee: SEAILLES ET TISON SOC NOUV
Current assignee: SEAILLES ET TISON SOC NOUV
Priority date: 1977-05-31
Filing date: 1978-05-24
Publication date: 1981-12-16
Also published as: DE7816355U1; FR2392917B1; FR2392917A1

Description

(54) DEVICE FOR PERFORATING A MOVING SHEET (71) We, SOCIETE NOUVELLE SEAILLES ET TISON a Body Corporate organised and existing under the laws of France of 53 Avenue Rensard, 41100 Vendome, France, do hereby declare the invention, for which we pray that a Patent may be granted to us, and the method by which it is to be performed to be particularly described in and by the following statement: The present invention relates to a device for perforating a moving sheet. The sheet may be comprised of printed matter, and, for example, can be ultimately intended, after production operations, to be a printed form: With a device to which the invention relates it possible to carry out continuously, i.e. without stopping the advance movement of the sheet, a perforating operation which is one of the production operations to which the sheet is subjected.

Usual production operations in the case of printed matter are as follows: - making perforations in the sheet for driving the sheet [for example "CAROLL" (Trade Mark) perforations - cutting edges of the sheet; - making crimps which ensure the cohesion of different superposed foils of the sheet [for example of the CRIMP LOCK (Trade Mark) type].

Figure 1 of the accompanying drawings shows, by way of example a portion of printed matter subjected to these operations.

In this Figure, the median axis of the sheet is shown at XY. The sheet 1 presents, respectively, a right-hand row of perforations 2 and a left-hand row of perforations 3, as well as crimps 4 and 5 distributed along a right-hand track and along a left-hand track respectively. The cutting of right- and lefthand edges 6 and 7 has also been shown in this Figure.

The above-mentioned operations are carried out by means of tools which must be adjustable so as to produce the two tracks at the desired spots and to align the perforations of the two tracks.

It is also necessary correctly to adjust the tools which make the crimps and the tools which cut the edges.

French Patent 1 466 473 filed on December 7, 1965 already discloses a perforating device designed for perforating a continuously moving or stopped strip of material.

This device comprises two perforating blocks, each perforating block comprising a frame, a first shaft mounted to rotate in the frame and carrying a die-holder, a second shaft mounted to rotate in the frame and carrying a punch-holder in a position of cooperation with the die-holder, to form perforations in the sheet when the device is in use, the two shafts being provided with cooperating means ensuring perfect synchronisation of rotation of the shafts.

Such a device presents the advantage over the prior art of ensuring a perfect cooperation of the die-holder and the punch-holder and of allowing a displacement of the die-holder and the punch-holder without compromising their cooperation.

It is an object of the present invention to develop these advantages further.

According to the invention there is provided a device for perforating a moving sheet so as to produce two rows of perforations in said sheet, said device comprising two perforating blocks, each perforating block comprising a frame, a first shaft mounted to rotate in the frame and carrying a die-holder, a second shaft mounted to rotate in the frame and carrying a punchholder in cooperating position with the die-holder, the two shafts being provided with cooperating means ensuring their perfect synchronisation in rotation, and the device comprising a common driving shaft for rotating a driven shaft of each block in rotation, wherein the common driving shaft is provided with alignment adjusting means such that a relative sliding of the driving shaft and of the driven shaft of one of the blocks provokes a relative rotation of the common driving shaft and said driven shaft.

It is possible to construct a device in accordance with the invention allowing attainment of a reduction of the adjustment times and the possibility of an adjustment, during operation, of the alignment of the perforations of the two tracks and of the spacing of the two tracks.

This is fundamentally achieved by the provision of a common driving shaft for rotating a driven shaft of each block.

In a preferred embodiment, the common driving shaft is provided with means for adjusting the alignment such that a relative sliding of the driving shaft and of the driven shaft of one of the blocks provokes a relative rotation of the common driving shaft and of said driven shaft.

One of the frames, or both, preferably carries other rotary tools for carrying out production operations and comprises a transmission ensuring the rotation of these tools from the common driving shaft.

An embodiment of a device formed in accordance with the invention will be described hereinafter, where the device comprises a support common to the two blocks and in which said common driving shaft is mounted to rotate about its own axis, said support carrying the two blocks facing each other, at least one of the two blocks being mounted in the support so as to be dis lace- able in translation in a direction parallel to the common driving shaft.

Thus the invention will now be further described, by way of example with reference to Figures 2 to 5 of the accompanying drawings, in which: Figure 2 is a view in perspective of the support in a device formed according to the invention for perforating a moving sheet, the two blocks having been removed; Figure 3 is a simplified perspective view of one of the blocks for the device in Figure 2; Figure 4 is a detailed view of part of the common driving shaft of the device in Figure 2; Figure 5 is a schematic section through the two blocks at the level of the die-holders and punch-holders in the device in Figure 2; Figure 6 is a plan view of an embodiment of a block for a device formed according to the invention; and Figure 7 is a schematic section of the support and the blocks in another embodiment of a device formed according to the invention for perforating a moving sheet.

The device shown in Figures 2 and 5 comprises a support 8 which comprises two side pieces 9 and 10 connected by guides 11 which carry two blocks 12, 13 in translation.

Each block 12, 13 is mobile in the support under the action of an endless screw mounted in the support. In Figures 2 and 5 only the screw, whose rotation about its own axis provokes the translation of the block 12, is visible at 14.

In the support 8 is also mounted a common driving shaft 15 so as to be able to rotate about its own axis and be displaced longitudinally.

On the side piece 9 of the support is provided a transmission member 16 for controlling the rotation of the shaft 15 and actuating means 17, 18 for manually rotating the endless screw 14 which controls the translation of the block 12 and the other similar endless screw 19 which controls the translation of the block 13.

The common driving shaft 15 comprises on the one hand longitudinal drive grooves 20 and, on the other hand, helical drive grooves 21 (Figures 4 and 5). This shaft passes inside two hollow shafts 22 and 23.

The hollow shaft 22 is mounted to rotate in the block 12 and it is coaxially fast with a die-holder 24. The shaft 22 carries one or more inner fingers 25 which penetrate into longitudinal grooves 20 of the shaft 15.

These fingers connect the shaft 15 and hollow shaft 22 (and therefore the dieholder 24), in rotation but allow a longitudinal translation of the shaft 15, which is without effect on the angular position of the die-holder 24. On the block 12 is also rotatably mounted a shaft 26 which bears the punch-holder 27 in cooperating relationship with the die-holder 24. The rotation of the shaft 15 is transmitted to the punchholders 27 via the hollow shaft 22 and a transmission with pinions 28, 29.

The hollow shaft 23 of the other block 13 similarly carries a die-holder 30 in cooperating relationship with a punch-holder 31 mounted on a shaft 32. The hollow shaft 23 presents one or more inner fingers 33 which penetrate into helical grooves 21 of the shaft 15. These fingers connect the shaft 15 and shaft 23 in rotation ; a longitudinal translation of the shaft 15 is translated by a corresponding rotation of the shaft 23 with respect to the shaft 15. The shaft 32 is connected by a transmission with pinions 34, 35 to the hollow shaft 23. Each block 12, 13 carries other rotating tools for carrying out production operations on the sheet and a transmission ensuring the rotation of these tools from the common driving shaft 15.

Figure 3 shows for example the block 12 which rotatably carries two tools 38, 39 for forming the crimps and this block also rotatably carries two other tools 36, 37 for cutting the left-hand edge of the sheet. This block 12 is designed as a casing which carries these tools as well as the die-holder 24 and the punch-holder 27 on the outside, whilst the transmissions (gears, belts, etc...) which drive the different tools from the shaft 15 are located inside the casing and do not appear in Figure 3 which is a view from the outside.

It is unnecessary to describe these transmissions in detail as they are conventional.

Block 13 has a similar constitution.

In the most general case of the operator having to make different adjustments, the operations may be carried out as follows - the sheet 1 being engaged in the machine, the operator adjusts the spacing of the right-hand track by acting on the crank 18 which provokes the translation of the block 13, therefore the translation of the perforating tools 30, 31 and the other tools carried by the block.

- if necessary, he/she adjusts the spacing of the left-hand track by means of crank 17 which provokes the translation of the block 12 and, consequently, of the perforating tools 24 and 27 and the other tools of the block.

If the operator notices a defective alignment between the perforations of one track and the perforations of the other track, he may remedy this by shifting the shaft 15 along its axis, this having for its effect to ensure an angular advance or delay of the tools 30 and 31 and to return these tools into angular coincidence with the tools 24 and 27.

The other tools are preferably mounted so as to be displaceable in translation along their axis, this enabling their relative position with respect to the perforating tools to be adjusted. The possibility of effecting these adjustments presents advantages in the yield of the machine and enables the life of the punches and dies to be increased since the relative positions of these tools are not disturbed by the different adjustments.

The driving shaft 15 has been shown as being in one piece in the embodiment which has been described. As a variant, a shaft is used which is constituted by a plurality of sections which are assembled or which are fitted together so that the assembly constitutes a rotary unit.

Figure 6 shows an embodiment of a typical block of a perforating device formed according to the invention. This block constitutes a casing, generally rectangular in form, provided at the four corners with passages 41 for the rods 11 for assembly of the block in the support. On one face of the casing are rotatably mounted the die-holder 24, the punch-holder 27, the edge cutting tools 36, 37 and the crimping tools 38, 39.

The lower edge cutting tool 37 is rotated from the hollow shaft 22 of the die-holder 24 via a notched transmission belt concealed in the casing and schematised at 43. The upper edge cutting tool 36 is free and driven in rotation by the friction of the lower tool. A locking knob 44 enables the tool 36 to be locked in the suitable position after lateral adjustment. The crimping tools 38, 39 are rotated from the hollow shaft 22 of the die-holder and the shaft 26 of the punchholder, respectively, via notched belts 45, 46 concealed in the casing. A stretching device 47 enables the spacing of the two tools 38, 39 to be adjusted in operation by acting on the position of the upper tool which is pivotally mounted on the casing. Pads 48 are provided to rub against the assembly rods in order to prevent an undesirable displacement of the block in the chassis from the chosen position.

Figure 7 shows a variant embodiment of the support chassis and the blocks. It has been assumed that the block 49 which is rotated by the part of the shaft 15 with helical grooves 21 is fixed in the support or displaceable by hand by sliding along the rods 11, whilst the block 50 which is rotated by the part with longitudinal grooves 20 is displaceable in translation along the rods 11 under the action of an endless screw 51, manoeuvrable by means of a hand-wheel 52 accessible on the outer face of one of the side pieces 53 of the support. On this face is also accessible a hand-wheel 54 of which the rotation causes shifting of the common shaft 15 along the axis of the shaft. In this example, the common shaft is constituted, as may be seen, of a plurality of added parts fixed end to end to constitute a unitary assembly. At its other end, this shaft is provided with a wheel or a pinion 55 accessible on the outer face of the opposite side piece 56 of the support and intended to be connected by a transmission to a motor of a printing assembly.

WHAT WE CLAIM IS: 1. A device for perforating a moving sheet so as to produce two rows of perforations in said sheet, said device comprising two perforating blocks, each perforating block comprising a frame, a first shaft mounted to rotate in the frame and carrying a die-holder, a second shaft mounted to rotate in the frame and carrying a punchholder in cooperating position with the die-holder, the two shafts being provided with cooperating means ensuring their perfect synchronisation in rotation, and the device comprising a common driving shaft for rotating a driven shaft of each block in rotation, wherein the common driving shaft is provided with alignment adjusting means such that a relative sliding of the driving shaft and of the driven shaft of one of the blocks provokes a relative rotation of the common driving shaft and said driven shaft.

2. A device as claimed in claim 1,

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. these tools as well as the die-holder 24 and the punch-holder 27 on the outside, whilst the transmissions (gears, belts, etc...) which drive the different tools from the shaft 15 are located inside the casing and do not appear in Figure 3 which is a view from the outside. It is unnecessary to describe these transmissions in detail as they are conventional. Block 13 has a similar constitution. In the most general case of the operator having to make different adjustments, the operations may be carried out as follows - the sheet 1 being engaged in the machine, the operator adjusts the spacing of the right-hand track by acting on the crank 18 which provokes the translation of the block 13, therefore the translation of the perforating tools 30, 31 and the other tools carried by the block. - if necessary, he/she adjusts the spacing of the left-hand track by means of crank 17 which provokes the translation of the block 12 and, consequently, of the perforating tools 24 and 27 and the other tools of the block. If the operator notices a defective alignment between the perforations of one track and the perforations of the other track, he may remedy this by shifting the shaft 15 along its axis, this having for its effect to ensure an angular advance or delay of the tools 30 and 31 and to return these tools into angular coincidence with the tools 24 and 27. The other tools are preferably mounted so as to be displaceable in translation along their axis, this enabling their relative position with respect to the perforating tools to be adjusted. The possibility of effecting these adjustments presents advantages in the yield of the machine and enables the life of the punches and dies to be increased since the relative positions of these tools are not disturbed by the different adjustments. The driving shaft 15 has been shown as being in one piece in the embodiment which has been described. As a variant, a shaft is used which is constituted by a plurality of sections which are assembled or which are fitted together so that the assembly constitutes a rotary unit. Figure 6 shows an embodiment of a typical block of a perforating device formed according to the invention. This block constitutes a casing, generally rectangular in form, provided at the four corners with passages 41 for the rods 11 for assembly of the block in the support. On one face of the casing are rotatably mounted the die-holder 24, the punch-holder 27, the edge cutting tools 36, 37 and the crimping tools 38, 39. The lower edge cutting tool 37 is rotated from the hollow shaft 22 of the die-holder 24 via a notched transmission belt concealed in the casing and schematised at 43. The upper edge cutting tool 36 is free and driven in rotation by the friction of the lower tool. A locking knob 44 enables the tool 36 to be locked in the suitable position after lateral adjustment. The crimping tools 38, 39 are rotated from the hollow shaft 22 of the die-holder and the shaft 26 of the punchholder, respectively, via notched belts 45, 46 concealed in the casing. A stretching device 47 enables the spacing of the two tools 38, 39 to be adjusted in operation by acting on the position of the upper tool which is pivotally mounted on the casing. Pads 48 are provided to rub against the assembly rods in order to prevent an undesirable displacement of the block in the chassis from the chosen position. Figure 7 shows a variant embodiment of the support chassis and the blocks. It has been assumed that the block 49 which is rotated by the part of the shaft 15 with helical grooves 21 is fixed in the support or displaceable by hand by sliding along the rods 11, whilst the block 50 which is rotated by the part with longitudinal grooves 20 is displaceable in translation along the rods 11 under the action of an endless screw 51, manoeuvrable by means of a hand-wheel 52 accessible on the outer face of one of the side pieces 53 of the support. On this face is also accessible a hand-wheel 54 of which the rotation causes shifting of the common shaft 15 along the axis of the shaft. In this example, the common shaft is constituted, as may be seen, of a plurality of added parts fixed end to end to constitute a unitary assembly. At its other end, this shaft is provided with a wheel or a pinion 55 accessible on the outer face of the opposite side piece 56 of the support and intended to be connected by a transmission to a motor of a printing assembly. WHAT WE CLAIM IS:

1. A device for perforating a moving sheet so as to produce two rows of perforations in said sheet, said device comprising two perforating blocks, each perforating block comprising a frame, a first shaft mounted to rotate in the frame and carrying a die-holder, a second shaft mounted to rotate in the frame and carrying a punchholder in cooperating position with the die-holder, the two shafts being provided with cooperating means ensuring their perfect synchronisation in rotation, and the device comprising a common driving shaft for rotating a driven shaft of each block in rotation, wherein the common driving shaft is provided with alignment adjusting means such that a relative sliding of the driving shaft and of the driven shaft of one of the blocks provokes a relative rotation of the common driving shaft and said driven shaft.

2. A device as claimed in claim 1,

wherein the alignment adjusting means comprise helical grooves on a part of the common driving shaft.

3. A device as claimed in claim 2, wherein said driven shaft is hollow and presents one or more inner fingers engaged m helical grooves in the common driving shaft.

4. A device as claimed in any one of claims 1 to 3, in which the driven shafts of the two blocks are hollow, and said common driving shaft passes through these two hollow shafts, wherein said common driving shaft comprises longitudinal drive grooves and helical drive grooves.

5. A device as claimed in any one of claims 1 to 4, wherein one of the frames, or both, carries other rotary tools to act on the sheet and comprises a transmission ensuring the rotation of these other tools from the common driving shaft.

6. A device as claimed in any one of claims 1 to 5, further comprising a support common to the two blocks, in said support the common driving shaft being mounted to rotate about its axis, said support carrying the two blocks facing each other, and at least one of the two blocks being mounted in the support so as to be displaceable in translation in a direction parallel to the common driving shaft.

7. A device as claimed in claim 6, wherein said suPPort comprises two side pieces connected by guides which carry at east one of the two blocks in translation.

8. A device as claimed in claim 6 or claim 7, further comprising a transmission member for the common driving shaft, and actuating means being provided for controlling the translation of one of the two blocks or for controlling the translation of the two blocks separately one from the other.

9. A device as claimed in any one of claims 6 to 8, wherein the common driving shaft is movable in translation along its axis in the support, and means being provided for controlling this displacement of the common driving shaft along its axis.

10. A device for perforating a moving sheet so as to produce two rows of perforations in said sheet, substantially as described hereinabove and illustrated in the accompanying drawings.