SU1212783A1 - Machine for three-side cutting of inner books - Google Patents

Description

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The invention relates to the printing industry and can be used for trimming book blocks.

The purpose of the invention is to increase the productivity of the machine for trimming book blocks and increasing the service life of knives by ensuring uniform load on the knives.

Fig. 1 is a schematic diagram of a machine for three-sided pruning of book books, top view; figure 2 - diagram of the drive carriage; in FIG. 3, view A in FIG. 1; Fig. 4 shows graphs of changes in the speed of oscillation of knives and changes in forces.

A three-sided trimming machine for book blocks contains two feeders 1 and 2, a pair of closed periodically moving conveyors 3 and 4 s. spring-loaded pushers 5-10 a feeder consisting of two carriages 11 and 12 with clips for a stack of book blocks 13-16, mounted in vertical guides 17-20 knives 21 and 22 and in horizontal guides 23 and 24 knife 25 and two Large conveyors 26 and 27 with pushers 28 and 29.

The reciprocating movement of the knives 21 and 22, 25 (Fig. 3) is communicated from the actuator 30. The side knives 21 and 22 are interconnected by a rocker arm 51 and receive movement from the crank 32 through the connecting rod 33. The spring 34 serves to sample the gaps. The front knife 25 is driven by the link 35 through the lead 36.

To move the carriages 11 and 12, there are fixed 37 and 38 and spring-loaded 39 and 40 springs 41 and 42 rests placed on a drive platform 43, which is rigidly connected to the rod of the scrub head 44 and located in the direction 45 (FIG. 3).

Spring-loaded stops have rollers 46 and 47. The clips of the carriages consist of sponges: fixed 48 and 49 and movable 50 and 51. The opening and closing of the clips is carried out with compressed air. Retractable stops 52 and 53 are provided for precisely positioning the blocks in the carriage clamps.

In the guides 54, spring-loaded balls 55-58 are placed, which are used for fixing the carriages when they are stopped by the limiting bars 59 and 60 Dp to increase the sensitivity of the feed 2783.

the spindle to change the cutting forces on the fixed stops 37 and 38 of the drive platform 43 can be placed springs 61 and 62, transmitting movement

5 carriages.

The device works as follows.

From the feeder 1 pack of book blocks 13 is inserted into the open clip

0 carriage (figure 2) spring-loaded pusher 6 periodically moving the conveyor 3 (with this loading pattern - spine down, head forward). Block alignment relative to

5 jaws 49 and 51 is carried out by pressing the pack of blocks 13 with the spring-loaded pusher 6 against the sliding stop 52, after which the clamp closes. When compressed air is supplied to the pneumatic cylinder 44 (Fig. 3), the carriage 11 with the block of blocks 13 clamped is transported to the trimming zone with the aid of the stop 37 placed on the drive platform 43, which is rigidly connected with

5 by the pneumatic cylinder 44. Simultaneously with the carriage 11, the carriage 12 begins to move with the cut of book blocks 15 cut along the same drive plank 43 with the spring-loaded stop 40. The carriage 12 stops at the restrictive bar 60 (FIG. 2) mounted on the path of movement of the carriage, with the latter being fixed by spring-loaded balls 55 and 56 placed in guides 54. As the platform 43 continues to move, overcoming the force of the spring 42, the stop 40 is sunk and its roller 46 rolls along the bottom of the carriage 12. P after stopping the carriage 12, the clip is opened, the stop 53 is retracted from the path of the cut pack of book blocks 15 and the latter is pulled out by the pusher 9 onto the exit conveyor 26. At the same time, another pusher 8 inserts the next pack of blocks 16 into the clip of the carriage 12 and presses it to returning the stop 53, aligning the jaws 48 and 50, after which the clamp is locked.

During the height of the carriage 12, the trimming of the pack of block 13 is completed on three sides with knives 21, 22 and 25, the air supply to the pneumatic cylinder 5 is switched, the direction of movement of the carriage 11 is shifted, which is moved by the spring-loaded stop 39.

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move, transporting the bundle of the blocked 13 and entering the next 14 packs 16 into the cutting area, while ki book blocks. In this way, the carriage 11 stops limited — both piston strokes of the pneumatic cylinder, with a distance bar 59 for outputting (left and right), are working.

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VNIIPI Order 704/23 Circulation 656 Subscription Branch ShSh Patent, Uzhgorod, Proektna St., 4

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Claims (3)

1. MACHINE FOR THREE-SIDED CUTTING OF BOOK BLOCKS, containing a base, a feeder for bundles of book blocks, carriages with clamps, a tool for moving carriages, plate knives with a drive for their reciprocating movement, and a conveyor for removing the cropped packs, characterized in that, in order to increase productivity and increase the service life of knives, the tool for moving the carriages is made in the form of a movable platform on which the carriages are installed, and · a pneumatic cylinder · connected to the platform, with each knife installed detecting with the possibility of reciprocating movement along the direction coinciding 'with the line of its cutting edge. 2. Machine pop. 1, characterized in that the lamellar knives are made with two-sided sharpening! G goy. . 3. Machine pop. 1, characterized in that the carriage is spring-loaded relative to the platform. > self-period-trimming