JPS5928486B2 - plate conveyor chain - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Description of the technical field to which the invention pertains] The present invention relates to a plate conveyor chain for a bookbinding machine, in particular a folding or glue binding machine, which is driven by a pair of chain wheels. The present invention relates to an endless roller chain having plates articulated on the chain pins in a plate holder and supported with their supporting surfaces facing each other in the clamping section.

[Description of prior art]

An endless plate conveyor chain for folding or gluing machines, also used in the duct work path for the production of collates, for receiving the collates to be processed and transporting them to other working positions. It has been known.

These known plate conveyor chains, on the one hand, are capable of transmitting high clamping forces to the collates, but on the other hand they exhibit drawbacks with respect to the running in and out of the collates and the feeding of the collates. The drawback from the perspective of the collation movement is that the chain pieces assume a position tangential to the arc of the chain wheel at the point of change of direction, at the beginning and end of the chain path.
As a result, the corners of the plates fastened to the chain pieces that are oblique to the running direction are located at the transition areas from curved to straight track, i.e. collation, and at the transition from straight to curved track, i.e. collation. It digs into the transport track of the collate in the area where the collate is removed. In order to avoid damage to the collated feed at this corner, the feed of the chain must be in the form of an enlarged funnel so that an arcuate path gradually passes into a straight path and vice versa. .
Such a funnel-shaped configuration, however, lengthens the overall machine and increases the technical cost. A further disadvantage of collation feeding is caused by the misalignment that occurs between the clamping plates and the collations when transporting the collations.

This deviation is due to the chain row and the protrusion of the chain piece on the chain track. As a result, the collation process is inaccurate. [Description of the purpose of the invention] The present invention is a plate conveyor chain that does not cause slippage itself and can move lightly, has a short collating/unloading run, and transmits strong clamping force by chain feeding without slippage. It is about creating something.

This allows for reliable, shift-free and damage-free transportation of the collates through the individual processing stations despite the short machine configuration, and the quality of the processed collates must be maximized. [Purchase of the invention] This problem is solved by the following according to the invention.

That is, in a plate conveyor chain having a pair of endless roller chains driven by chain wheels and plates articulated on the chain pins with plate holders, the bearing point of each plate holder is It is arranged under the front part or under the front edge of the plate seen in the transport direction. In this case, the rear end of the plate advancing forward comes into contact with a plate holder that supports the following plate. The plate conveyor chain can be configured such that each or every second chain pin pivotally supports a plate holder. For light transport and movement of the plate conveyor chain, the chain pins that pivot the plate holders can be equipped with roller bearings that roll along feed guides arranged in the clamping section. The rear corner of each plate is shaved off so that the rear corner of the plate moves along an arc whose radius is the distance from the clamping surface to the center of the chain wheel, and the corner does not protrude outward beyond this arc. do it like this. Furthermore, the portion of the plate holder that abuts the rear end of the preceding plate is formed in an arc shape centered on the bearing location. An embodiment of the present invention will be described in detail below.

The principle sketch according to FIG. 1 shows a pair of plate conveyor chains, consisting of an endless plate conveyor chain 1 on the right and an endless plate conveyor chain 2 on the left, each of which extends over a driven chain wheel 3. The surfaces of the plates facing each other are fed so that they move at a constant speed from left to right. On the opposite side, the plate conveyor chains 1, 2 run over the driven chain wheels 4.

Between the chain wheels 3 and 4 there is a tightening section in which feed guide members 5 and 6 are installed.

The latter serves to support the plate conveyor chain in the clamping area. The distance between the plate conveyor chains 1, 2, including the feed guides 5, 6, can be adjusted to the thickness of the collation 7 in a known manner. The book blocks are thus conveyed in a straight line, tightly clamped between the plate conveyor chains 1 and 2. In the cross-section of FIG. 1 shown in FIG. 2, the structural structure and mode of operation of the plate conveyor chains 1, 2 can be seen.

The endless plate conveyor chain 1,2 consists of a roller chain 8 running around a chain wheel 3,4.

There are alternately normal length chain pins 9 and elongated chain pins 10. A plate 11 is attached to the elongated chain pin via a plate holder 12. The bearing on the chain pin 10 of the plate holder 12 is indicated at 10''.

The plate holder 12 in this embodiment consists of two inner and two outer support legs. However, it may optionally take other forms. The plate holder 12 protrudes inward from the front edge of the plate 11 to which it belongs when viewed in the direction of travel, and the rear end 13 of the preceding plate 11 is supported by coming into contact with the following plate holder 12. Each plate holder 12 thus forms a support seat 12' at the portion against which the rear end 13 of the preceding plate abuts. An elongated chain pin 10 is arranged outwardly from each support seat 12'', which receives the clamping pressure and transmits it to the feed guide members 5, 6 by means of roll bearings 14 received in the likewise elongated chain pin 10. A light chain movement is guaranteed even when the tightening force is large. The support seat 12'' of the plate holder 12 is formed in an arc shape around the elongated chain pin 10. This ensures that when the plate conveyor chains 1, 2 are turned around by the chain wheels 3, 4, the rear ends 13 of the plates do not protrude beyond the circular arc 15'' into the inside of the conveying path of the collate. The corner 13'' of the rear end of the plate 11 is cut flat along the arc of radius 15 from the clamping surface of the plate 11 to the center of the chain wheels 3 and 4, so that the plate conveyor chains 1 and 2 are When sent over the chain car, the plate 11
3'', it always remains within the range of a circular arc 15'' with a radius of 15. That is, the bearing portion 10' of the plate holder 12 is located in a forward position relative to each plate 11. plates 11 facing each other in the clamping zone along a straight trajectory;
, 11, the plate 11 is rotated by a counterclockwise force about the pin 10, and is supported by coming into contact with the support seat 12'' of the succeeding plate holder 12. Since all the preceding plates 11 can abut against the support seats of the succeeding plate holders 12, the entire plate 11 overlaps in a row as the force applied to the plate 11 that has entered the tightening area acts on the succeeding plate holders. Therefore, the centrifugal force of the chain wheel will not cause the preceding plate to separate from the succeeding plate holder, and the plate 11 will therefore be able to maintain its rear corner edge 13'' in the entry and exit areas without collapsing. Since there is no encroachment into the transport track, it is guaranteed that there will be no hindrance in the transition to the straight chain track. 6 and 7 show a plate 11 with shoulders 16 on its side edges. Such a shoulder further improves chain running. Moreover, these are the plates 1 in the axial direction of the chain pin 10.
Serves as a supporting support opposite 1. The shoulder 16 and the plate holder 12 are designed in this case in such a way that the plates 11 are automatically locked together when transitioning from a circular arc to a straight trajectory and are unlocked when transitioning from a straight to a circular trajectory. Can be done. Such a lock, which is possible in principle even at the edges of the plates that abut each other, ensures that the individual chain sections of the plate conveyor chain are completely in place.

[Description of Effects of the Invention] According to the present invention, when the direction change point, that is, when the plate conveyor chain runs over the front or rear chain car, the front plate hits the arc-shaped portion of the following plate holder. Since the plates change direction while touching each other, it is possible to prevent the plate from digging into the conveying track of the collate when changing direction, and also to ensure complete feeding from plate to plate, preventing damage to the collate. can.

Embodiment 1 A device characterized in that a plate holder 12 is supported on every second chain pin 10.

Embodiment 2 The plate conveyor chain according to any one of claims or Embodiment 1 includes a chain pin 10 that supports a plate holder 12, and a feed guide member 5,
6 is characterized in that a roller bearing 14 that rolls on the roller bearing 14 is disposed.

Embodiment 3 A plate conveyor chain according to any one of embodiments 1 to 2 of the claims, wherein the rear end corner 13'' of each plate is
It is characterized by being rounded or cut flat along a part of the arc of radius 15 from the tightening surface to the center of the chain wheels 3, 4.

Embodiment 4 A plate conveyor chain according to any one of embodiments 1 to 3 of the claims, in which the support seat 12'' on which the rear end 13 of the preceding plate abuts is centered on the bearing portion 10''. It is characterized by being rounded into an arc.

Embodiment 5 A plate conveyor chain according to any one of embodiments 1 to 3 of the claims, wherein the shoulder 16 has a side edge of which the play opening 1 contacts and covers the outer edge of the plate holder 12 of the subsequent plate 11. A device characterized by having the following.

[Brief explanation of the drawing]

Figure 1 is a basic sketch of a pair of plate conveyor chains viewed from above, Figure 2 is a cross section of Figure 1, Figure 3 is a cross section of ~I in Figure 2, and Figure 4 is a side view of one plate. 5 is a top view of FIG. 4; FIG. 6 is a side view of the plate with lateral shoulders; FIG.
The figure shows a cross section of ~ in Figure 6. Explanations of the numbers in the drawings are as follows. 1...Plate conveyor chain, 2...Plate conveyor chain, 3...Chain car, 4...Chain car, 5...Feeding Guide member, 6...
Feed guide member, 7... Collation, 8... One roller, one chain, 9... Chain pin, 10...
・・Chain pin, 10″・・・・Bearing part, 11・
...Plate, 12...Plate holder, 12''...Support seat.

Claims (1)

[Claims] 1 A pair of endless roller chains driven by a chain wheel, articulated with plate holders on the chain pins of the chains, and whose supporting surfaces face each other in the tightening area, in the longitudinal direction In plate conveyor chains for bookbinding machines, in particular spine or adhesive bookbinding machines, which have plates supported on guide members of The front edge of each plate holder 12 is provided with a support formed in an arc shape around the bearing portion 10', which abuts and supports the distal end 13 of the preceding plate. A plate conveyor chain characterized by having a seat.