SU704778A1 - Method of trimming paper stacks - Google Patents

Description

, I - The invention relates to methods for cutting stacks of paper, book blocks, and similar materials, such as cutting with one or several knives in the course of movement of the material being cut. ; ., The Known method of trimming the stop paper, in which each steppe is in a continuously moving holder and is carried out in the following direction: bottom, press STOP, and cut it from different sides with the help of upper and lower knives. one . This method of pruning has a low productivity. The purpose of the invention is to increase productivity,:.;.,. This is achieved by the fact that before 1 o 6pis3Koft of the foot, it is oriented relative to the knives, and when cutting the lower knife with a guide device, movement in the direction of transport of the foot is reported at a speed equal to the speed of the foot, while the upper knife is informed by plane-parallel movement in the cutting plane foot, and the guide device after -: -: - ;;:. ;;,. / cutting back to its original; position to capture the next foot. Moreover, between the individual stages of trimming the foot can be rotated by 90 in the plane of the surface of the foot. ; ,;,: -: j. :. FIG. 1 shows a cutting machine, side view; on .fig. 2-section A-A in FIG. one; in fig. 3 — section BB in FIG. 2; in fig. 4 — section BB in FIG. 2; in fig. 5 shows possible schemes for the execution of cutting ycij properties. . ..: .... The cutting machine contains two side walls 1. and-2, between which a certain number of supporting devices 3 are located, designed to secure and compress the stop: cut the 6th brim.app, blocks 4 qyig. Two carrier devices 3 are located directly in the corresponding devices 5 and b. The carriers 3 are interconnected by a pair of chains 7, guided by two pairs of 8 and 9 stars, of which the latter receives movement from the drive sprocket 10. The ilapa chains 7 are connected to the housing 11 of the carrier 3 by means of a chain roller 12. The casing 11 of the caterpillar to the stars in the guides 13. To hold the block 4 during transportation in the compressed state, there are two pressing plates 14 and 15. The bottom plate 15 is installed with the possibility of rotation in the carrier 3 and together with block 4 and pressing plate 14 , guided in the pressing lever 16, while maintaining the conditions of compression, i.e. rotatably between cutting tools 5 and 6 in such a way that one side of block 4, which is perpendicular to cut, and located opposite to one or two of the cut sides of the block, can be installed parallel to transport in order to be able to. make a cut on this side in a sequential cutting device b.

Both cutting devices 5 and 6 consist of a corresponding knife beam 17. It is guided by a connecting rod 18, which is driven by a crank 19 and a connecting rod 20 (see Fig. 1). On the beam 17, the upper knife 21 is fixed with an intermediate plate with 22 screws, 23 (see Fig. 2). Nabalu. 24, a cam 25 is mounted, which serves to transmit the movement to a guide device 26, on which the lower cutting tool 27 is fixed. ,

In order not to move the device 3 in parallel guides 28; BUT to the direction of transport, which is the same as the movement of the guide device 26 with the lower tool 27, the cam 25 receives movement through a sprocket 29, a cam roller 30, a cam lever 31 and a rod 32 The cam roller 30 is constantly pressed against the cam 25 with the aid of. springs 33.

The sprocket 29 is kinematically connected with an asterisk 34, which is mounted on the shaft 35. A pulley 36, kinematically connected to the engine 37 via gear 38, is also attached to W 6p6j.

The carrier 3 is based on fixed guides 39, located under the pair of chains, if it moves from left to right under the cutting means .5 and 6.

Near a pair of chains 8 and 9 of the top of the device 3 are guided directly by a pair of 7, and the shaped chain roller 40, located in the wings 41 of the housing 11 of the sled, prevents tilting of the carrier 3.

For feeding on the right side of the machine of the cropped book blocks 4 there is a conveyor 42 located on both sides under block 6,

moreover, the same conveyor serves to move the block 4 between the plates 14 and 15 and relative to the stop 43. The device also has an outlet conveyor 44.

The plate 14 is rotatably mounted by means of a pressing lever 16 around the hinge pin 45, against which block 4 is pressed. The bottom plate 15 is connected to the rotary shaft 46 by screws 47, the shaft 46 being installed in the hub 48, which is rigidly connected to the housing 11 of the carrier slide 3 The rotary shaft 46 is rigidly connected to the thrust hub 49, which bears the roller axle 50 and the roller 51 swiveling on it. The latter is kinematically associated with the fixed cams 52 and 53, which, when the carrier 3 moves, move from the hub 48 and block 4 to the right angle (see FIG. 4). Such a rotation can be made between two cutting tools 5 and 6, if it is necessary to perform a trimming perpendicular to the previous trimming.

The guide 26 is guided in rigid guides 54

Using the holder 55 on the guide device 26 (see Fig. 1, an undercutting tool can be fixed, for example the lower knife 56, on the upper left edge of which the upper knife for cutting the lower sheets of the block can be moved at small distances, and the undercutting tool is made in ToiaHOK 57, in which the upper knife 21 may enter a short distance, which is necessary for cutting the lower sheets of the block (on the right) The direction and drive of the upper knife 2l are shown in Fig. 1.

The machine has two cam strips 58. As the carrier 3 moves, the rollers 59 of the compressing mechanism roll over them (see Fig. 3) which also includes the lever 16 acting on the upper plate 14 and the slider 60 having an axis 61. The end 62 of the slider perpendicular to axis 61.

The compression arm is pivotably mounted on the axis 63, which is located in the bearing 64, which is rigidly connected with the housing 11 of the carrier slide.

. The bearing 64 simultaneously serves to guide the linear direction of the slider 60. The upper head of the slider 60 is shaped like a fork, which covers the lever 16 and the axis 65 located in this head, which transmits the movement of the slider 60 using the linkage 66 to the lever 16. The spring 67 presses the slider 60 when the absence of counter-action from the cam 58 side (in the FIG, left to left), whereby the upper plate 14 and the book block 4 could be released. , The site of movement of the inventive devices in FIG. 5 is designated 68, the rotational position where the book block 4 is rotated by 69. The unit for cutting the two parallel sides of the lower block 4 in the installation. In the knives work simultaneously. In the installation with - with offset, t . consecutively in time, in the installation on three sides, in the installations And “fii triangular cutting; The cutting knives are marked 70, 71 and 72. The cropped book blocks 4 are guided on the right side of the machine along the conveyor 42 and transported between the plates 14, 15 and relative to the stop 43. Then, the lowering of the top plate 14 and the block are compressed 4 fits into the first, left, cutting device 5 and is cut off on one or two sides parallel to the direction of transportation. After turning the block 4 on 90 and cutting in the second cutting device b, the block turns to its original position and when lifting 14, 15 on the output conveyor skidyvaets 44.- ,. As shown in FIG. 2 and 3, book block 4 is disposed between two plates 14 and 15 and compressed. The plate 14 is rotated around the pin 45 with the help of the lever 16, to which the block 4 is pressed, the slide body 11 is directed on both sides in the guides 3 and moves from the chain pair 7 through the roller 12. The roller 51 engages the cam: 52i. 53, which, when the carrier 3 moves, rotates the hub 48 and block 4 in a straight line yt-oh between cutting tools 5 and 6. If roller 62 moves out of the non-launching device 3 to the compression point (see Fig. 1 from the top right), the axis 61 and the slider 60 are raised with cams, then the movement is transmitted by the cha lever 16, which is squeezed by the book block 4 through the upper plate 14. Under the action of the spring 67 the slider is pressed down in the absence of a counter-action from the cam. the trimming I 1-a I due to the fact that the upper plate 14 rises and the book block 4 is released. Position 1. Right (see Fig. 4) is the starting point in the cutting device 5, in which the book block is cut on one or two sides. When: further movement of the carrier device 3 to the subsequent cutting device 6 (left in the drawing), the fixed cams 52 and 53 in section II move upwards between devices 5 and 6 roller 51, due to which the hub 49 of the lever and the shaft 46 are turned straight angle. This rotation is carried out at the same time plates 14 and 15, ac them and book block 4, so that in position Sh there is an adaptation. 5, you can trim the front edge of block 4 located along the direction of travel. Upon further movement of the carrier device 3, the cams return to the initial position of the hub 49 with the shaft 46 and the book block (position IV), FOF. Formula of the invention. A method for trimming btop paper in which each foot is placed in:. continuously moving the holder and will align, clamp-stop and sequentially trim it with. different stterne s .; using the upper and lower knives, so on and so that with the purpose of increasing productivity, before cutting the foot, it is oriented relative to the knives, and when cutting the lower knife with a guide device, the movement in the direction of transport is reported foot with a speed equal to the speed of the foot, while the top; the knife is informed by plane-parallel movement in the plane; the foot is cut, and the guide device, after trimming, is rotated to the starting position for the next foot to be gripped. - 2, The method according to Claim 1, that is, with the fact that between the individual stages of trimming the foot is turned 90 in the plane of the surface of the foot. , .. Sources of information taken on the examination. 1. GDR patent number 32395, cl. 11 in, 2, -1964.

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