RU2238853C2 - Sheet separating disk for sheet counting machine and mechanism for moving of sheet separating disk - Google Patents

Abstract

FIELD: polygraphy, in particular, equipment for counting of sheets of different size and density and sheet stacks of different height.

SUBSTANCE: sheet separating disk has segments with separating teeth and channels with round or elongate discharge openings adapted for pressing of sheet to disk. Registration openings connected with sensor and electronic pulse counter may be of similar shape, with larger axis thereof being arranged at an angle of 0-180 deg to circle, whose radius corresponds to distance from disk center to separating teeth. In case programmed counting is not necessary, disk moving mechanism switches on only one two-position pneumatic switch. Pneumatic cylinder stem is connected with its chamber through flexible hermetically sealed hose, which may have oval section. Sheet separating disk of such construction allows paper sheet counting to be performed simultaneously from four angles thereof.

EFFECT: enhanced reliability in operation and increased sheet counting speed.

12 cl, 17 dwg

Description

The group of inventions relates to printing engineering and can be used to create all types of machines designed for counting sheet products of different formats and densities, as well as different heights of the foot.

A device for counting paper sheets in the foot, in which a sheet-separating disk and a mechanism for moving it are described. The device comprises a rack mounted on the base, on which the chamber of the pneumatic cylinder is rigidly fixed, the rod of which is movably connected to the carriage. Relative to the carriage, with the possibility of reciprocating motion, a sleeve is placed, one end of which is kinematically connected with the electric motor. The end of the spindle is rigidly connected to the disk, in which the separating teeth, registration holes and holes are made with lead-in parts and several round output holes. Between the disk and the pusher spring-loaded to the carriage, which is rigidly fixed on the sleeve, there is a flat distributor with control and working channels. The latter is connected to a vacuum source. The control channel is connected to the sensor, which, in turn, is connected to the meter. In addition, the device contains two on-off valves and a valve rigidly mounted on the carriage and made in the form of a nozzle and a spring-loaded damper, which is movably connected through the shank to the pusher (RU 2007759, class G 06 M 7/06, 02.15.1994).

A disadvantage of the known mechanism is its excessive dimensions and weight, and the disk is insufficient operational reliability, due to the possibility of pressing several thin sheets of paper at once to the surface of the hole.

The technical result of the proposed sheet separation disk is to improve the conditions of sheet separation, and therefore, the accuracy of the count of paper sheets having different thickness and density.

In addition, due to the design of the mechanism for moving the sheet-separating disk, the sheet-counting machine can be equipped with not one, but several (2-4) indicated disks located at the corners of the read sheet, which will also positively affect the accuracy of sheet counting, since it will be possible to compare among themselves the counting results recorded by several sheet counters, each of which is connected to its own sheet separating disk. This is especially important for strictly accounting products, such as banknotes that have a small format.

The technical result of the proposed mechanism for moving the sheet-separating disk is to expand the possibilities of its use, unify the main node of sheet-counting machines for various purposes, reduce its dimensions, as well as increase the reliability of the machine as a whole and ensure ease of maintenance.

The invention consists in the following:

The sheet-separating disk of the sheet-counting machine has segments with separating teeth on its working surface, registration holes of channels intended for connection with a sensor and an electronic pulse counter, and sheet-separating grooves, each of which has at least one channel outlet intended for connection with source of vacuum. Each of these registration and / or exit holes has an oblong or round shape. In the embodiment of the elongated holes, the major axis of each outlet formed in the groove is placed at an angle to the axis of the groove, which is in the range from 0 to 180 °. The major axis of each oblong registration hole lies on a circle having a radius slightly smaller than the radius of the disk, and corresponding to the distance from the center of the disk to the separation tooth. Also, the large axis of each registration hole of oblong shape can be located at an angle to the tangent drawn to the aforementioned circle, which is in the range from 0 to 180 °. At angles of 0 ° and 180 °, the above axis coincides with the specified tangent.

Several grooves are possible. According to one of them, it has a smoothly narrowed shape in the direction from the rectilinear end face of the segment to its pointed edge (separation tooth) and does not have a lead-in, which is intended primarily for interaction with thin sheets of paper. The option without a lead-in serves for reading sheets of paper with a density of more than 60 g / m ² (banknotes, typographic postage stamps and denser ones - various covers, catalog products, etc.).

For sheets of paper having a density lower than 60 g / m ² (writing paper, letterheads (railway and air tickets, etc.), it is advisable to make a groove with a narrow entry part having a smaller radius of curvature in cross section than the radius of the groove itself.

In this embodiment, the lead-in can be performed as a continuation of the groove, while the axis of the groove and the lead-in can be either on the same straight line or at an obtuse angle to each other, or lie on a circle.

The groove in cross section may have a constant or variable radius of curvature. In the latter case, the radius of curvature of the cross section of the groove gradually increases from the minimum value in the narrow part of the groove to its maximum value in the widest part of the groove located at the end of the rectilinear part of the segment.

The mechanism for moving the sheet-separating disk includes a node for ensuring its rotational movement and small axial movements by the size of the read sheet, consisting of a spindle, one end of which is connected to the specified disk and the other to the drive, and a node to ensure its reciprocating movement to the entire height a readable stack of papers, consisting of a pneumatic cylinder, the chamber of which is connected to the valve nozzle, and the pneumatic cylinder rod through the carriage and pusher - with a flap of this valve, made with the possibility of interactions with the specified nozzle, which, in turn, provides tracking of small axial movements of the spindle and connected to a vacuum source and disk. The chamber of the pneumatic cylinder is connected to the rod using a flexible, sealed sleeve, and the vacuum source is connected to the disk and the chamber of the pneumatic cylinder by means of at least one on / off pneumatic switch.

According to one of the options of the specified mechanism associated with ensuring the need for a software sheet count, between the on-off pneumatic switch and the disk can be installed an additional on-off pneumatic switch, configured to communicate with the atmosphere.

Between the disk and the pusher on the spindle is placed a spring-loaded flat distributor, which makes it possible to communicate with at least one on / off pneumatic switch to ensure a snug fit to the disk.

To reduce the size of the mechanism, the pneumatic cylinder, stem and sealed, flexible sleeve can have oval cross sections.

Figure 1 shows a General view of a sheet-counting machine, including a leaf-separating disk and a mechanism for moving it; figure 2 is a General view of a leaf-disc; figure 3 is a fragment of a leaf separation disk depicted in figure 2; figure 4 is a section aa in figure 3; in Fig.5 is a section bB in Fig.3; in Fig.6 is a section bb in Fig.3, in Fig.7 is a section GG in Fig.3; in Fig.8 is a section A'-A 'in Fig.3; figure 9 is a section B'-B 'of figure 3; figure 10 is a section b'-b 'of figure 3; figure 11 is a fragment of a leaf separation disk with a groove having a lead-in; in Fig.12 is a section DD in Fig.11, in Fig.13 is a section EE in Fig.11, Fig.14 is a section FJ in Fig.11, Fig.15 is a section Z- C in FIG. 11; on Fig (a, b, c, d) - various embodiments of the registration hole; on Fig (a, b, c, d) is a layout of sheet separating disks relative to a sheet of paper.

The mechanism for moving the sheet-separating disk of the sheet-counting machine is shown in FIG.

The device comprises a rack 1, in which a pneumatic cylinder 2 is rigidly fixed, connected through a flexible and sealed shell 3 to the rod 4, which is connected through a shank 5 to a carriage 6, which is capable of reciprocating movements relative to the rack 1 and rigidly connected to the housing of the spindle head 7, on which the electric motor is located 8. The latter, through a mechanical transmission 9, rotates the fork 10 and through it a leash 11, rigidly fixed to one end of the spindle 12, located inside the sleeve 13, with the possibility of return translational movement relative to the housing 7, the spindle 12 and the yoke 10. The sleeve 13 is spring loaded upward by a spring 14. At the opposite end of the spindle 12, a leaf-separating disk 15 is fixed, on the lower surface of which segments with leaf-separating grooves 16 and teeth 17 are made (Fig. 2). A flat distributor 19 with a working 20 and registration 21 channels is spring-loaded to the upper surface of the disk 15 towards the leaf-separating disk by the spring 18. The registration channel is connected to a sensor 22, which is connected to an electric pulse counter (not shown), and the working channel with one or two pneumatic switches 23 and 24 (pneumatic switch 23 may not be necessary if there is no need for a program account). The pneumatic switch 24 can be either electromagnetic or manual. On the housing of the spindle head 7, a valve 25 is rigidly fixed, comprising a nozzle 26 and a damper 27 spring-loaded to it, which is connected via a pusher 28 to the sleeve 13.

Within the framework of the present invention, several embodiments of a sheet-separating groove 16 are provided.

Figure 3 shows a fragment of a leaf-separating disk with a groove 16, which in cross sections AA, BB and BB has a constant radius of curvature R (Figs. 4-6), while the depth h and the width l of the groove increase ( l ₂ > l ₁ > l) towards the end face 29 of the segment 30 (Figs. 3-7).

The groove of the described configuration is made by a cylindrical cutter and it is intended for papers with a density above 60 g / cm ² .

On Fig-10 shows an embodiment of the groove depicted in figure 3 using a conical cutter. In this embodiment, R ₁ <R ₂ <R ₃ , i.e. the groove in the cross sections A'-A 'B'-B' and B'-B 'has not only different depth and width, but also a different radius of curvature, increasing towards the end face 29 of segment 30.

This groove is the most versatile and allows you to more reliably separate the paper of the entire density range. For example, in the groove portion shown in section A'-A '(Fig. 8), sheets of paper of lower density are better separated, and in the groove portion shown in section B'-B' (Fig. 10), higher density.

11 shows an embodiment of a groove having a continuation in the form of a lead-in portion 31 located coaxially with a groove 16 and having a radius of curvature r in section DD (FIG. 12) smaller than the same radii R in sections E-E and Zh- G grooves (Fig.13, 14). The depth h ₁ and the width of the entry portion 31 are less than the depth h of the groove in its widest part (Fig. 15).

This embodiment of the groove is most suitable for sheets of paper with a density of less than 60 g / cm ² , because the lead-in, having a small radius of curvature, will reliably separate sheets of paper of this density from one another. The axis of the lead-in part 31 according to another embodiment of the invention can be placed at an obtuse angle to the axis of the groove along the chord or around the circumference, which is largely due to the diameter of the disk.

To ensure the reliability of the operation of the sheet separating disk, a smooth transition of the groove from one radius of curvature to another and from one depth of the insertion part or groove to their other depth is important.

Figure 2 shows various embodiments of the outlet openings 32. These openings can have both round and oblong shapes, and in the case of making the openings 32 oblong, their large axes can coincide with the axis of the groove or be placed at an angle to this axis.

On Fig presents various embodiments of registration holes 33 having a round (Fig.16, a) or oblong (Fig.16, b, c, d) shape.

The angle of inclination of the major Y axis of the oblong hole to the tangent to the circle (X axis), having a radius corresponding to the distance from the center of the disk to the tooth 17, is in the range of 0-180 °. So, in Fig. 16, b, an option is shown when the Y axis coincides with the X axis (i.e., the indicated angle is 0 or 180 °), in Fig. 16, the acute angle α is shown, in Fig. 16, d - the angle α is obtuse (i.e., the hole may have an inclination in different directions relative to the vertical), which is due to more reliable overlapping of the registration hole for thick papers (Fig. 16, c) and the possibility of undermining a sheet of thin paper (Fig. 16, b, d), and for the account of securities of medium density subject to the provision of air.

The intake of air into the chamber of the pneumatic cylinder stops. Due to the weight of the movable part applied to the stem 4, the pressure drop between the chamber and the atmosphere reaches the value necessary to hold the carriage 6, and the stem stops. Simultaneously with switching the distributor, the electric actuator 8 is turned on and the disk 15 starts to rotate. When the disk 15 is in contact with the top sheet of the foot, the groove 16 (figure 2) of the disk 15 communicates with its holes 32 through the working channel 20 of the distributor 19 and the pneumatic switch 24 with a vacuum source deform the angle of the sheet 34 (Fig. 17) along its profile, and the tooth 17, having entered the gap formed in this case, transfers the separated corner of the sheet to the upper surface of the segment 30 (Fig. 2). This sheet overlaps the registration hole 33 of segment 30. A vacuum is generated in the control channel of the distributor 19, as a result of which the sensor 22 is activated and the electronic pulse counter connected to it captures the counted sheet.

With further rotation of the disk 15, the hole 33 communicates again with the atmosphere, and the next groove 16 deforms the next sheet, the next tooth 17 transfers the corner of the sheet to the surface of the segment 30, overlapping its hole 33, etc.

With each transfer of the sheet to the upper surface of the tooth 17, the disk 15 and, accordingly, the pusher 28 are lowered to the thickness of the sheet. The pusher 28 through the shank comes in contact with the shutter 27 and opens the hole of the nozzle 26 of the valve 25. Atmospheric air entering the chamber of the pneumatic cylinder 2 reduces the pressure drop, and the rod 4 together with the carriage 6 begins to lower. Between the nozzle 26 of the valve and the shutter 27 a gap is automatically established at which the lowering speed of the carriage 6 becomes equal to the vertical speed of the disk 15, due to its interaction with sheets of paper.

After the counter has counted the total or predetermined number of sheets, the counter switches the flat distributor 19, which communicates via the channel 20 with the atmosphere, and the sheet separation by the disk 15 is stopped. The counter turns off the electric drive 8. The operation of the device at this end.

The design and dimensions of the described calculating device will allow the paper sheets to be counted from one two, three and four corners at the same time, paper of a format from 50 mm to any format used in printing, which significantly increases the reliability and speed of the count and expands the range of application of the counting device, especially when strict accounting products and small format, for example, banknotes, railway cards and airline tickets, etc.

The proposed disk device can also be used for counting high-density paper (150-250 g / m ² ), such as postcards, business cards, various forms, etc.

Claims (12)

1. A leaf-separating disk of a sheet-counting machine, containing segments with separating teeth, registration holes of channels intended for connection with a sensor and an electronic pulse counter, and sheet-separating grooves, each of which has at least one outlet channel for connecting to a vacuum source, wherein each of said registration and / or outlet openings has an oblong or round shape, the major axis of each oblong outlet, formed of it in the groove, is placed at an angle to the axis of the groove, and the major axis of each oblong registration hole lies on a circle whose radius corresponds to the distance from the center of the disk to the separation tooth, or on a tangent to this circle or located at an angle to it. 2. The disk according to claim 1, in which the angle of inclination of the major axis of the oblong outlet to the axis of the groove is in the range from 0 to 180 °. 3. The disk according to any one of claims 1 and 2, in which the angle of inclination of the larger axis of the oblong registration hole to the circle or tangent to it is in the range from 0 to 180 °. 4. The disk according to any one of claims 1 to 3, in which the groove is made smoothly narrowed in the direction from the end of the segment to the leaf-separating tooth. 5. The disk according to claim 4, the groove of which in cross section along the entire length has a constant radius of curvature. 6. The disk according to claim 4, the groove of which in the cross section has a variable radius of curvature, smoothly transitioning from the maximum value in the wide part of the groove to its minimum value in its narrow part. 7. The disk according to any one of paragraphs.5 and 6, in which the groove has a continuation in the form of a lead-in, the axis of which intersects the axis of the groove at an obtuse angle or is located on the same straight line or on a circle. 8. The disk according to claim 7, in which the inlet in cross section has a radius smaller than the radius of the groove. 9. A mechanism for moving a leaf-separating disk, comprising a node for ensuring its rotational movement and small axial movements, consisting of a spindle, one end of which is connected to the specified disk, and the other to the drive, and a node to ensure its reciprocating movement to the entire height of the read a pack of papers, consisting of a pneumatic cylinder, the chamber of which is connected to the nozzle of the valve, and the rod of the pneumatic cylinder through the carriage and pusher - with a flap of this valve, made with the possibility of interaction with the specified Plomo providing tracking of small axial movements of the spindle, and associated with a vacuum source and a disk, wherein the chamber of the pneumatic cylinder connected to the rod by a flexible sealing sleeve, a vacuum source is connected with the disc and the chamber of the pneumatic cylinder via at least one toggle pnevmopereklyuchatelya. 10. The mechanism according to claim 9, in which between the on-off pneumatic switch and the disk is installed an additional on-off pneumatic switch, made with the possibility of communication with the atmosphere. 11. The mechanism according to any one of paragraphs.9 and 10, in which the spindle is a spring-loaded flat distributor configured to communicate with at least one on / off pneumatic switch. 12. The mechanism according to any one of paragraphs.9 and 10, in which the pneumatic cylinder, rod and flexible sleeve have round or oval cross sections.

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