JP2007532443A - Individualized section for overlapping flat mail pieces in an upright position - Google Patents

Abstract

  Individualization in an individualization section arranged along the transport path and having a plurality of individualization stages (12, 13a, 13b, 13c) driven independently and one relay point (10) at the end. The drive control device for the stages (13a, 13b, 13c) is an individualized stage in which the foremost mail piece (8, 9) is present as soon as the front edge of the mail piece is detected at the relay point (10). The drive motors (4.2, 4.3, 4.4) of (13a, 13b, 13c) are stopped. Each follow-up mail piece (8, 9) is not already present in the first stopped individualization stage (13a, 13b, 13c) in the downstream direction. The drive motors (4.2, 4.3, 4.4) of the individualized stages (13a, 13b, 13c) that are stopped are respectively connected to the rear edges of the mail items (8, 9) that run in front. As soon as it leaves the stage (13a, 13b, 13c) or a postal piece (8, 9), respectively following it, immediately before the empty stage (13a, 13b, 13c), it is started again.

Description

  The present invention relates to a personalized section for overlapping flat mail pieces in an upright position according to the superordinate concept of claim 1.

  A one-stage individualization apparatus (Patent Document 1, Patent Document 2) and a multistage individualization apparatus (Patent Document 3) are known. In the case of a multi-stage individualizing device, the individual stages of the individualizing device are spatially separated from one another. This is a group of belt drive mechanisms that are separated and arranged one after the other (Patent Document 3).

  The apparatus known from Patent Document 2 includes an individualized part in which mails are accelerated, and an accelerated part in which one of the two mails is additionally discharged in the case of double-accelerated mails. Have.

  From Patent Document 4, it is known that the mail is delivered across the delivery gap at different transport speeds between the two transport units.

  From Patent Document 1, Patent Document 2 and Patent Document 5, it is known how mails can be delivered without different delivery speeds between delivery parts at different delivery speeds. For this reason, it is known from Patent Document 1 and Patent Document 5 that the turning rollers individually supported on the transport belts of two adjacent transport portions are arranged on a common shaft with their heights alternately.

  In the case of these known devices, the position of the mail piece is monitored by a light barrier.

  With these solutions, it is difficult to individualize mail pieces with many lengths with a large charge amount and a low load.

  The individualization section described in Patent Document 6 comprises two individualization stages that are driven independently, however, these individualization stages have large pieces of mail simultaneously in both individualization stages during transport. They are too far apart from each other. Here, a relay point is also arranged after each individualization stage. That is, both the individualization stages do not act on mail pieces or double mail pieces.

Furthermore, from US Pat. No. 6,057,089, individualization stages having two directly individualization stages are known, but these individualization stages are not controllable independently.
US Pat. No. 3,372,925 US Pat. No. 2,941,653 US Pat. No. 6,135,441 (A) French Patent 2 657 857 (A1) US Patent 1 858 320 US patent 6 550 764 (B2) German patent 102 12 024 (A1)

  An object of the present invention is to provide an individualized section for overlapping flat mail pieces in an upright position, which can individualize mail pieces of many length types with a large loading amount and a small load. is there.

  According to the invention, this problem is solved by the features of claim 1.

  In this case, the drive control device for the individualization stage immediately stops when the front edge of the mail piece is detected at the relay point, and the drive mechanism of the individualization stage where the foremost mail piece exists in the downstream direction is stopped, It is configured to ensure further conveyance without sufficient slip. The number and length of the individualization stages are such that the postal matter that follows with a minimum gap is not present in the last stopped individualization stage in the downstream direction and the postal length type and rated transport. It is selected according to the speed.

  The drive mechanism of each individualized stage that has been stopped is as soon as the trailing edge of the mail piece that runs ahead exits this individualized stage, or as soon as each following postal piece exists immediately before the empty individualized stage. Is started again.

  That is, the stop / start process of the individualization stage for transporting the mailpieces that run ahead affects the transport of the following mailpieces in the individualization section, which in this case has no interruption and no load. Run to the relay point at a slight interval to the mail that runs in front.

  Advantageous forms of the invention are set out in the subclaims.

  In order to maintain the minimum or optimal gap between mail pieces, for short mail pieces, the relay point of the center point of the rear turning roller in the downstream direction of the conveying belt of the individualization stage upstream of the individualization stage of the relay point Is the minimum of the distance from the post, adding the minimum gap between the mail pieces and subtracting the section that travels when the mail pieces are decelerated from their rated speed to a value of 0 or accelerated from their stationary state to their rated speed. The case corresponding to the postal length is advantageous.

  At least one individualization stage is arranged upstream of the individualization stage at the relay point, so that the following mailpiece can follow the previous mail piece with a minimum interval. Mail in which the distance between the center points of the turning rollers of the transport belt of the transport path is a section that advances when the mail piece is decelerated from the rated speed to the value 0 or accelerated from the stationary state to the rated speed. The case corresponding to the smallest gap between objects is advantageous. In this case, the distance between the center points of the diverting rollers of the conveying belts of the individualized stages from the adjacent diverting rollers of the adjacent individualized stages is at least when the mail pieces are decelerated from their rated speeds to the value 0. Or it corresponds to the section which advances when it is accelerated from the stationary state to each rated speed, but it is not larger than the maximum or minimum mail piece length.

  In order to maintain a minimum or optimum gap between the mail pieces even in the case of long mail pieces, the turning rollers are used in the transport path when the mail pieces are decelerated from their respective rated speeds to a value of 0 or from a stationary state. Turns disposed downstream of an individualization stage that is adjacent to the individualization stage upstream and separated from each other by the value of the minimum clearance between pieces of mail that are subtracted from the section that travels when accelerated to the respective rated speed. It is advantageous if the distance from the relay point of the center point of the roller corresponds at least to the length of the longest mail piece minus the minimum gap between mail pieces reduced by a deceleration or acceleration interval.

  The invention will now be described by way of example based on the drawings.

  The multi-stage individualizing device consists of an input area, not shown, in which the stacks of upright mail pieces each pull out the most recent mail piece, for example by means of a pull-out belt assisted by negative pressure. It is automatically supplied to the first individualization mechanism and then supplied to the other individualization stages 12-13c of the individualization section. This exists as a scaly postal logistics, with the mail pieces often overlapped at the beginning of the individualization section in a concentrated manner, which is then moved apart from one another. It is necessary because it is dissociated into postal mail.

  On the opposite side of the drawer or conveyor belt 3, a fixed restraining element can be arranged. However, these restraining elements are often not in a situation that completely dissociates the scale. FIG. 1 shows the rear part of the individualization section in plan view, in which case the constraining element opposite the individualization element in the transport path is not shown in order to see the whole.

  The individually supported turning rollers 2 of the conveyor belt 3 driven by the drive motors 4.1, 4.2 in the individualization stages 12, 13a are common at the transition between the individualization stages 12, 13a. It is assembled on the shaft 1 of. As a result, the delivery gap in the postal distribution of the upright postal matter existing on the under floor belt that supports the transport not shown in the transport path is reduced to 0 mm. This arrangement allows the delivery of postal items with absolutely no impact to the subsequent individualization stage 13a.

  The restraining elements acting between the transport belts 3 and their height positions must also be changed by preferably arranging them alternately so that the heights of the transport belts 3 are different in the individualization stages 12, 13a. . Mail pieces 8, 9 that are stacked and secured by punches or clips, that is, multiple mail pieces, can be easily separated from each other on the premise of different points of action of the restraining elements on the mail pieces 8, 9.

  If the belt transport is to be additionally assisted by negative pressure, the negatively arranged chambers 7 of the individualization stages 12 to 13c, each relaying, are advantageously provided with their respective previous ones. Located near the transition to the individualization stage. Since the postal items 8 and 9 to be accelerated are pulled at an early stage by the negative pressure chamber 7 of the conveyor belt 3 in the individualization stage following the downstream, the entrainment force is increased.

  Each individualization stage that follows downstream has a higher conveying speed than the individualization stages arranged in front of each other, thereby additionally supporting the individualization process.

  Along the transport path, there is a sensor array 11 with individual light barriers 11a to 11d, by means of these light barriers, and / or the leading edge of the mail piece 8, 9 for issuing a switching signal for the drive motor. The position of the trailing edge is specified.

  The relay roller 6 is connected to the last individualization stage 13c so that the postal items 8 and 9 are relayed at the relay point 10 without obstruction, and the relay roller 6 is not sandwiched between them. Along with the rear turning roller 2, it is rotatably arranged on one shaft. In order to transport the mail within the individualized section as importantly as possible when the gap is small, the operation is carried out by relaying the postal items 8 and 9 that follow each other at least upstream of the transport section. Until it reaches the point where it is transported without interruption. However, also in this case, the overlap of each mail piece still present should be as dissociated as possible. For this reason, the first postal matter is conveyed to the postal delivery unit 10 through the individualization stages 13a to 13c without being restrained. As soon as the light barrier 11d positioned directly on the connection point of the relay part 10 of the postal matter is shielded by the front edge of the postal matter, the postal items 8 and 9 are caught by the rollers of the relay point 10 and the first All the individualization stages 13a to 13c in which the mail pieces are present are stopped (this is the individualization stage 13c for short mail pieces 9, and additionally the individualization stage 13b for long mail pieces) In the case of a very long mail piece 8, there is also an individualization stage 13a). The first mail is pulled out against the transport belt 3 that is stopped by the relay roller 6 at the relay point 10. These transport belts act on the double mail pieces that are similarly attached as a restraining belt on the mail transport side.

  The numbers, intervals and lengths of the individualization stages 13a to 13c are selected such that the postal items which follow with the interval "minimum gap" do not already exist in the stopped individualization stage 13. For the shortest and longest mail pieces 8, 9, this means in this example: That is, the distance between the center points of the turning rollers 2 existing in the conveyance path of the individualization stage 13c of the relay point 10 adds a minimum gap between the mail pieces, and the mail pieces 8 and 9 are moved from their stationary state to their rated speeds. Or the length of the shortest mail piece 9 obtained by subtracting the acceleration section or the deceleration section necessary for shifting from the rated speed to the stationary state. Before that, there is the individualization stage 13b, and the center points of the turning rollers 2 in the conveyance path of this individualization stage are separated from each other by the minimum postal matter gap value minus the acceleration / deceleration section.

  The center points of the turning rollers 2 are separated from the center points of the adjacent turning rollers 2 of the adjacent individualization stages 13a and 13c by at least the value of the acceleration / deceleration section. However, the distance between the center points of these turning rollers 2 must also be smaller than the shortest mail piece 9 so that reliable transport is guaranteed.

  When the front edge of the longest mail piece 8 reaches the relay point 10, the interval between the rear edges from the center point of the rear turning roller 2 in the conveyance path of the individualization stage 13a is the acceleration / deceleration section. Provide minimum postal clearance value.

  When the difference between the shortest and longest mail pieces 9 and 8 is large, the center point 1 of the turning roller 2 in the transport path is separated from each other by the minimum mail piece gap value obtained by subtracting the acceleration / deceleration section. The chemical stages are arranged one after the other.

  When the trailing edge of the mail piece running in front exits each individualization stage 13a-13c-this is detected by the light barrier-immediately drives each individualization stage to carry the following mailpiece The motors 4.2 to 4.5 are started again. That is, the following mail piece enters the individualizing stage that is operating. The drive motors 4.2 to 4.5 are started immediately even if the following mail pieces 8 and 9 follow immediately before the empty individualization stages 13a, 13b and 13c.

  When the trailing edge of the mail piece running ahead moves more slowly than the relay roller 6 at the relay point 10, this dissociation before the mail piece relay is effective in the case where the starting overlap is dissociated. In some cases, the gap between the leading edge of the mail piece after the overlap and the trailing edge of the mail piece before the overlap is monitored by the timing unit and the sensor array 11 (in the drive motor 4.5 of the relay roller 6). Is done. If the reference gap is reached, the individualization stages 13a, 13b, 13c are started again.

  If the overlap does not separate before the mail piece is relayed in the relay point 10, there is a double deduction.

  In that case, as soon as the trailing edge of the overlap reaches the relay point 10, the individualization stages 13a, 13b and 13 are started again.

A schematic plan view of the portion after the individualization section is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 axis | shaft 2 turning roller 3 conveyance belt 4.1-4.5 drive motor 6 relay roller 7 negative pressure chamber 8,9 mail piece 10 relay location 11 sensor row 11a-11d light barrier 12 individualization stage 13a-13c individualization stage

Claims (4)

In the individualization section for overlapping flat mail pieces in an upright position, the individualization section is a plurality of individually driven stages (12, 12) arranged in direct succession along the transport path. 13a, 13b, 13c), in this case,
Each individual stage (12, 13a, 13b, 13c) has a transport belt (3) entraining the postal matter (8, 9) and a postal matter (8 at a height between the opposing side and the transport belt (3); 9), and a sensor array (11) for detecting a front edge and / or a rear edge of a mail piece arranged along the transport path. In this case, a relay point (10) is disposed at the downstream end of the individualization section, and the individualized mail items (8, 9) are narrowed by the transfer means at the relay point. Carried and relayed, withdrawn from the individualized section,
The drive control device for the individualization stage (13a, 13b, 13c) immediately after the front edge of the mail piece is detected at the relay point (10), respectively, in the downstream direction, the foremost mail piece (8, 9) respectively. Is configured such that the drive motor (4.2, 4.3, 4.4) of the individualization stage (13a, 13b, 13c) in which is present is stopped,
-The number and length of the individualization stages (13a, 13b, 13c) are the same as the individualization stages (13a, 13b, 13c) is selected according to the length type of the mail piece (8, 9) and the rated transport speed so that it does not already exist,
-The drive motors (4.2, 4.3, 4.4) of the individualized stages (13a, 13b, 13c) that are stopped are respectively connected to the rear edges of the mail items (8, 9) that run in front. As soon as it leaves the individualization stage (13a, 13b, 13c) or a postal piece (8, 9), respectively following immediately before the empty individualization stage (13a, 13b, 13c), it is started again. An individualized section characterized by   Distance from the relay point (10) of the center point (1) of the rear turning roller (2) in the downstream direction of the conveyor belt (3) of the individualization stage upstream of the individualization stage (13c) of the relay point (10) However, when the mail piece (8, 9) is decelerated from the rated speed to the stationary state or accelerated from the stationary state to the rated speed, the minimum clearance between the mail items (8, 9) is added. The individualized section according to claim 1, which corresponds to a minimum postal length obtained by subtracting a forward section.   At least one individualization stage (13b) is disposed upstream of the individualization stage (13c) of the relay location (10), and in this individualization stage, the turning roller (3) of the conveyance belt (3) of the conveyance path ( 2) The interval between the center points (1) is drawn when the mail piece (8, 9) is decelerated from the rated speed to the stationary state or accelerated from the stationary state to the rated speed. It corresponds to the minimum gap between the postal items (8, 9) and the conveying belt (3) of this individualization stage (13b) from the adjacent turning roller (2) of the adjacent individualization stage (13a, 13c). The distance between the center points (1) of the turning rollers (2) is at least when the mail piece (8, 9) is decelerated from the rated speed to the stationary state or from the stationary state to the respective rated speed. It corresponds to the section that goes forward, but the smallest and largest mail piece Individualized section of claim 1, wherein no greater than is.   The turning roller (2) draws a section that advances when the mail piece (8, 9) is decelerated from the rated speed to the stationary state or accelerated from the stationary state to the rated speed in the conveyance path. Turning rollers disposed downstream of the individualization stage (12, 13a) adjacent to the individualization stage (13b) upstream and separated from each other by a minimum gap value between the mail pieces (8, 9). The longest mail piece (8) in which the distance from the relay point (10) of the center point (1) of (2) is at least the smallest gap between the mail pieces (8, 9) reduced by the deceleration or acceleration section. The individualized section according to claim 1, which corresponds to a length of

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