JPS5926574B2 - Seihon Yoshibrotsuku Hansou System - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a support frame coupled with a drivable transport chain for holding fixed inner clamp jaws supported on lower and upper guides, and an inner clamp jaw for clamping a block of bound paper. a swinging frame suspended from a support frame axis parallel to the inner clamp jaw for holding a rotatably supported clamp jaw on the outer side which always occupies a position parallel to the inner clamp jaw; The present invention relates to a bookbinding paper block conveying system having a blocking tongue which is continuously movable in a closed circuit path consisting of.

The binding paper block conveying system known from U.S. Pat. It emanates from the connected tightening bodies.

Starting from the cam and via the drive lever, further movements for opening and closing the clamping jaws take place. Due to the bias of the force generated by the clamping body from the fixed side to the swingable ramp jaw side, already high clamping forces of 100 kg and more are generated for holding paper blocks for various process operations. The necessary magnitude of the tightening force that must be
Must be increased considerably.

The transmission of this undoubtedly large spring tension via a relatively long force transmission path in the swingable ramp jaw and thus also through multiple centers of rotation requires an expensive and heavy construction depending on the design. However, this measure results in disadvantages not only due to wear and tear, but also due to downtime, and ultimately limits to working speed. During the swung condition on the clamping jaw after a long distance of the generally known circulation path, the load has a particularly strong influence on the guide and bearing, since at this stage the spring element is stretched to the maximum. It is. The basic task of the invention is to create a bookbinding paper block system of the kind mentioned in the introduction, which eliminates the above-mentioned disadvantages of the known systems.

According to the invention, this problem is solved by means of a drive track arranged on the opposite side of the inner clamping jaw which exerts a clamping force and transmits this force to the outer clamping jaw, and by means of a drive track which causes the rocking movement for opening and closing of the outer clamping jaw. This is achieved by means of a control track lying separate from the track and also by a torsion spring which transmits the clamping force from the drive track to the outer clamping jaw by means of a compression member. Preferably, the drive track exerting the clamping force is arranged directly on the lower guide between the lower and upper guides of the support frame. Due to the position of the drive track which provides the clamping force on the side lying opposite the inner jaw, the clamping force is generated directly on the required side, so that a relatively light construction can be chosen.

By separating the control for the opening and closing process from the control of force consumption for block clamping, the bookbinding paper block transport system according to the invention limits levers and rotational and/or bearing points to a minimum. Torsion bar springs have a special challenge in compensating for differences in paper block thickness without adjustment work, ie, in thicker blocks the spring element is twisted more strongly, thus providing increased twisting force. Depending on the location of the origin of the forces on the lower guide of the support frame, a particularly advantageous distribution of the forces can be achieved. The features and advantages of the invention can be further explained by the exemplary embodiments shown in the drawings. It becomes clear by

DESCRIPTION OF THE PREFERRED EMBODIMENTS A block scissors 2 of a bookbinding paper block conveying system consisting of a number of block tongs arranged facing each other at equal intervals and movable continuously in a closed circuit orbit will be described with reference to the drawings.

As FIG. 3 shows particularly clearly, the block scissors have a support frame 3 with a fixed inner clamping jaw 4 and a rotatably placed outer clamping jaw 4.
The swing frame 5 has a swing frame 5 suspended from a support frame 3 having a frame 6. A lateral support frame 7 of a machine frame (not shown) holds upper and lower guide rails 8 and 9 forming a closed circulation track, in which horizontal and vertical guide rollers 8a, 8b and 9a, 9b are arranged. Sometimes they are located on both sides of the support frame 3 and are movable. For this purpose, the support frame should be pin 12
The roller chain 10 is rotated by a roller chain 10 which is oscillated in a known manner via a chain wheel 11. The support frame 3 freely rotatably holds the left retainer tube 15 and the right retainer tube 16 via its bearings (FIG. 2).

The end regions of the two retainer tubes are rigidly connected by a torsion rod spring 17, for which the head 17a of the spring is provided with a wedge surface 17b which locks in the insertion groove 19 of the retainer tube. The left tube 15 serves to hold the two oscillating frame bearings 5a, 5b and is fixed in the oscillating frame bearing by means of an adjusting spring 20 and a tightening screw 20a; supported above. At this end there is a swing lever 23 which is fixed on the tube 16 by a clamping screw 24 and an adjusting spring 25. To ensure axial movement, the head 17a of the torsion bar spring 17 receives a headed bolt 27, the head bringing a disk 28 to the front of the tube end, taking into account the play required for the device. . The right retainer tube 16 also holds a pressure lever 29 via an adjusting spring 30 and a tightening screw 31. The lever 29 holds at its other end a guide roller 34 which abuts a drive track 35 (FIG. 2). As shown in FIG. 5, there is a fitting piece 36 on the bracket of the right swing frame 5, which acts together with the connecting plane 37a of the ring 37 which is fastened with the right retainer tube. In order to use a sufficient tightening force at will with a small block thickness, the right retainer tube 16 is moved oppositely to the left retainer tube 15 by pre-straining the torsion bar spring 17. In particular, it is twisted by a helix angle of 15° and fixed with the aid of the detents 36, 37a mentioned above. It is clear that other pre-distortions may be chosen if desired. As mentioned at the beginning, the outer fixed jaw 6 is pivotally mounted on the swing frame 5, and the clamp jaw is held by the shaft 41 via bearings 6a placed on both sides, as shown in FIG. As shown in 〇 In order to accurately tighten the bookbinding paper block 1, the outer clamp jaws 6 are required to be in a vertical position.

For this purpose, the control lever 42 and the control rod 43 are connected to one of the externally pivoted bearings 6a and to the swing frame 5, as shown in FIG. The free end of the lever 42 is attached to the support frame 3
A follow-up roller is held that slides on the plate cam 45 which is tightened with. The outer clamp jaw 6 holds a post 46 in order to cover and hold a large bookbinding paper block over its entire width. The movement for opening and closing the swing frame 5 starts from a swing lever 47 as shown in FIG. Holds the guide roller 49 running on the control track,
The other end is connected to the swing lever 23 via a hinge connection 51.

The operating method of the bookbinding paper block transport system will be described below.

The block scissors 2, which rotate continuously in a closed path of motion and are driven by a roller chain, are in an upward swinging position when entering the infeed area of the binding machine.

Outer clamping jaw 6 guided via control track 50
The swinging arm 5 supporting the pressure lever 29 follows the roller 34.
When it swings back, it enters the feed path of the drive track 35.
The bookbinding paper blocks brought into the area of the two clamp jaws 4 and 6 are clamped by the running guide rollers (following rollers) 34 on the drive track 35, so that all the clamping force is transferred from the pressure lever 29 without adjustment work. is transmitted onto the clamping jaws 6 via a torsion bar spring 17 which ensures a positive holding of the size, ie by tensioning and/or tension removal of the torsion bar spring.

The corresponding force required for the block thickness is utilized. After the block scissors have moved through several process positions, the follower roller 34 of the pressure lever is guided out of the drive track 35 which provides the clamping force, before the follower roller 49 of the lever 47 In this way the swinging arm 5 is swung out for release into the control track 50 for conveyance. The present invention may take the following embodiments. 1
) The binding paper according to the claims, characterized in that the control track 35 for exerting the tightening force between the lower and upper guides 8, 9 of the holding frame 3 is arranged directly on the lower guide 9. Block transport system.

2) It has a left side retainer pipe 15 and a right side retainer pipe 16 which are connected via a torsion rod spring 17 which is rotatably supported in the support frame 3, in which case the retainer pipe 15 is in a non-rotating state when the other Holding the swing frame 5 held by the retainer pipe 16,
The bookbinding paper block conveying system according to claim 1 or embodiment 1) is characterized in that the retaining tube 16 holds a pressure member 29 that supports the guide roller 34 in a non-rotating state.

3) The retaining pipe 16 is arranged on the anti-slip fittings 36, 37, 37a with a displacement of 1°, in particular by a torsion angle of 1°, by prestraining the torsion bar spring 17 with respect to the left support pipe 15. The bookbinding paper block conveying system according to the embodiment 2).

4) In the swinging lever 23 non-rotatably connected to the support frame 16 which is connected to the lever 47 rotatably supported in the support frame 3 via the connecting member 51, the lever is connected to its guide roller. A bookbinding paper block conveying system according to the claims and embodiments 1) and 2) above, characterized in that a control track 50 is maintained for causing a swinging process for opening and closing the swing frame 5 by means of a swing frame 5.

5) A curved disk cam 45 fixed to the support frame 3 and a follower roller 44 of a control lever 42 rotatably held by the swing frame 5 slide thereon, and the lever is rotated via a control rod 43. A bookbinding paper block conveying system according to the claims and embodiments 2) to 4), characterized in that the bearing 6a of the outer clamp jaw 6 is movably held.

[Brief explanation of the drawing]

FIG. 1 shows a front view of the protecting tongue. FIG. 2 shows a top view taken along section line A--B in FIG. FIG. 3 shows a sectional view taken along line CD in FIG. 1. Figure 4 shows the rear view of the protecting tongue. Figure 5 shows the G-
A cross section taken along line H is shown. FIG. 6 shows a cross section taken along line EF in FIG. 1. 2... Protsuku scissors, 3...
...Support frame, 4...Inner clamp jaw,
5... Swing frame, 6... Outer clamp jaw, 10... Conveyance chain, 17...
・Torsion bar spring, 29... Pressure material, 35...
...1 drive trajectory, 50... control trajectory.

Claims (1)

[Claims] 1 a support frame drivably connected to a conveying chain for holding fixed inner clamping jaws supported on lower and upper guides and always in a parallel position to the inner clamping jaws for tightening the bound paper block; and a swinging frame suspended on a support frame axis parallel to said inner clamping jaw for holding a rotatably supported clamping jaw on the outside of said inner clamping jaw. a drive track 35 disposed opposite the inner clamping jaw 4 for exerting a clamping force and transmitting this force to the outer clamping jaw 6 in a bookbinding paper block transport system with block tongs movable in A control track 50 that causes a rocking movement for opening and closing the outer clamp jaw 6 located apart from the drive track, and a torsion track that transmits the tightening force from the drive track 35 to the outer clamp jaw 6 using a pressurizing member 29. The bookbinding paper block conveyance system is characterized in that it has a bar spring 17.