JP2014185003A - Thin transported object feeding device and transported object classification system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin transported object feeding device that can prevent the reversal of a thin transported object when dropping from a trailing edge of a conveyor belt to a standby accumulation part, and to provide a transported object classification system.SOLUTION: A thin transported object feeding device 30 of the present invention includes: a height regulation gate 52 disposed on an upper part of an intermediate part in the transport direction of a conveyor belt 34, and leveling a transported postcard group Wg so as to become equal to or lower than a predetermined upper limit height while being superposed on a conveyor belt 34; and a sponge roller 70 arranged at an upper part of a driven pulley 33 positioned at the trailing edge in the transport direction among a plurality of pulleys 32, 33 coming into abutment with the conveyor belt 34 from the inside, and driven and rotated by sandwiching postcards W between the conveyor belt 34 and itself. The postcards W can be sandwiched between the conveyor belt 34 and itself from the trailing edge of the conveyor belt 34 to immediately before dropping to the standby accumulation part 11, so that the postcards W are prevented from greatly falling forward when dropping from the trailing edge of the conveyor belt 34.

Description

  In the present invention, a thin conveyed product is supplied from the upper side by a conveyor belt toward a standby upper portion with an open upper surface that accepts postcards, sealed letters, booklets, and other thin conveyed items in a stacked state. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin conveyance object supply apparatus and a conveyance object classification system that classifies thin conveyance objects into groups having common attributes.

  As a conventional thin conveyance object supply device, thin conveyance objects stacked on the start end side of the conveyance belt are sequentially extracted from the lower end side by frictional contact with the conveyance belt and directed toward the end of the conveyance belt. What is conveyed is known (for example, refer patent document 1).

JP 2010-168201 A (paragraphs [0032] to [0034], FIG. 3)

  By the way, when the thin transported product is supplied to the upper part of the standby stack by the conventional thin transported product supply device described above, the thin transported product is greatly lowered at the end of the transport belt and dropped. In some cases, some of the thin objects were turned over. For this reason, it is difficult to stack a thin transported object with a distinction between front and back on the standby stack with the front and back aligned.

  The present invention has been made in view of the above circumstances, and a thin transport object supply device capable of preventing the thin transport object from being turned over when falling from the terminal end of the transport belt to the standby stacking upper part and The purpose is to provide a system for sorting conveyed items.

  In order to achieve the above object, the thin-type transported article supply device according to the invention of claim 1 is provided with a top-open open stacking section for receiving postcards, envelopes, booklets and other thin-type transported articles. In the thin transported material supply device that feeds a thin transported product from the upper side with a transport belt, it is placed above the middle part of the transport belt in the transport direction and transported in an overlapping state on the transport belt A height regulating gate for leveling the thin conveyed product group to be equal to or lower than a predetermined upper limit height, and a terminal pulley located at the terminal end in the conveying direction among a plurality of pulleys that contact the conveying belt from the inside. It has a feature in that it is provided with a sponge roller which is disposed above and rotates in a driven manner with a thin conveyance object sandwiched between the conveyance belt.

  According to a second aspect of the present invention, in the thin conveyed product supply apparatus according to the first aspect, the height regulating gate has an inclined guide that extends from the upper position of the conveying belt obliquely downward to the front side in the conveying direction. It is characterized in that the thin transported object group passing through is leveled into a scaled and overlapped state.

  According to a third aspect of the present invention, in the thin article supply apparatus according to the first or second aspect, the thin article group is held in a state where it is stacked on the conveyor belt, and a height regulating gate is provided on the front side. It is characterized by having an upper holder.

  The invention of claim 4 is characterized in that, in the thin transported article supply device according to claim 3, the stacking holder extends obliquely upward and rearward in the transport direction from the transport belt.

  The invention of claim 5 is characterized in that, in the thin conveyed product supply apparatus according to claim 4, an inclination angle adjusting mechanism for arbitrarily changing the inclination angle of the stacking holder with respect to the conveyor belt is provided.

  According to a sixth aspect of the present invention, in the thin transported article supply device according to any one of the first to fifth aspects, the first and second first and second extending in the transport direction are arranged on both sides of the transport belt. A side support part, a start end pulley that is supported between the rear end parts of the first and second side support parts so as to be rotatable and supports the start end part of the conveyor belt from the inside; and a first side support part The front end is disposed between the front extension portion that extends forward from the second side support portion, the front end portion of the second side support portion, and the first side support portion, and is disposed inside the conveyor belt. A bridging bar and a pair of support arms that extend forward from two positions in the axial direction of the bridging bar and the front end bridging bar, are provided inside the conveyor belt, and are separated from the axial ends of the terminal pulley to the center side 2 The outer diameter of the terminal pulley is smaller than the entire terminal pulley. A pair of small-diameter shaft portions that receive the front end portions of the holding arms and are rotatably supported by the front end portions of the pair of support arms, and stand upward from the front end portion of the front extension portion, and remove the sponge roller. It has a feature in that it is provided with a sponge roller support member that is held and rotatably supported.

  The transported object classification system according to the invention of claim 7 is a stand-by product with an open top surface that accepts postcards, sealed letters, etc., on which the delivery destination information is printed on the front side, in a state where the thin-type transported products are stacked with the front side facing up. The upper and the thinnest transported product at the bottom of the standby stack are brought into frictional contact with a friction coefficient larger than the friction coefficient between the thinned products, and the thin transported product from the lower end of the standby stacking unit. And a driving rotary body that slides and feeds the first horizontal direction forward, and a thin transported object that is disposed in front of the upper portion of the standby stack and is extracted from the thin transported object group. A multifeed restricting member that slidably contacts the thin transported object with a friction coefficient smaller than the friction coefficient of the rotational drive body, and narrows the thin transported object that passes between the drive rotating body to one. , And a thin type transported one by one from the multifeed restricted transport device In a transport object classification system comprising a classification device that reads delivery destination information printed on a product and classifies thin transport items into groups having common attributes based on the delivery destination information. A stacking detection means for detecting the amount of the stacked product, and a thin transported product is transported by a transport belt in a second horizontal direction orthogonal to the first horizontal direction, and an upper standby portion of a multifeed restricting transport device The thin transport object supply device according to any one of claims 1 to 6 for supplying from the lower side of the stand-by product, and a thin transport object from the lower end of the standby product Waiting when the first frictional resistance, which is the frictional resistance between the thin transported objects for extracting the sheet, and the second frictional resistance, which is the frictional resistance when the multifeed restricting member is in sliding contact with the thinned transported object, are the same. Equilibrium stacking of thin transported goods at the top of the stack Assuming that the amount of piled up is obtained, the detection result is obtained from the pile-up detection means, and the piled-up amount of the thin transported object at the upper part of the standby pile is less than the balanced piled up amount and equal to or more than a predetermined reference piled up amount. It has a feature in that it is provided with a stacking control unit that switches between starting and stopping of the shaped article supply apparatus.

[Invention of Claim 1]
According to the thin article supply apparatus of claim 1, the thin article group conveyed while being overlapped on the conveyor belt enters between the sponge roller and the conveyor belt at the end of the conveyor belt. The sponge roller is driven to rotate by friction with a thin group of conveyance objects passing between the conveyance rollers. Here, the thin transported object group passes through a height regulating gate provided above the intermediate portion of the transport belt before entering between the sponge roller and the transport belt, thereby setting a predetermined upper limit height. Since the unevenness in the height of the thin transported object group after the leveling is absorbed by the elastic deformation of the sponge roller, the upper part of the stand-by stack is from the end of the transport belt. The thin conveyed product can be sandwiched between the sponge roller and the conveying belt until just before dropping into the container. Thereby, when falling from the termination | terminus part of a conveyance belt, it can prevent that a thin shaped conveyance thing falls greatly forward, and can prevent the thin conveyance thing in the upper part of a stand-by product from turning over. And it becomes possible to pile up the thin conveyance thing with front and back distinction on the stand-by pile upper part in the state which aligned the front and back.

[Invention of claim 2]
According to the second aspect of the present invention, the thin conveyed product that has passed under the height regulating gate can be leveled in a scaly and overlapped state. Can be dropped one by one.

[Invention of claim 3]
According to the invention of claim 3, when a plurality of thin conveyed objects are stacked on the stacking holder and are placed in a stacked state, they are sequentially thinned from the lower end side of the stacking holder due to frictional contact with the transport belt. The conveyed product is extracted and conveyed to the end side of the conveying belt. In addition, the height regulation gate acts when the thin conveyed product is extracted from the lower end portion of the stacking holder, and the height of the thin conveyed product group extracted in a state of being overlapped from the lower end portion of the stacking holder. Is so equal to or less than the upper limit height.

[Invention of claim 4]
According to the invention of claim 4, the entire thin transported object group stacked on the stacking holder can be kept in a state of being shifted and overlapped in the transporting direction. It is possible to smoothly extract the conveyed product.

[Invention of claim 5]
According to the invention of claim 5, it is possible to adjust the inclination angle of the stacking holder with respect to the conveyor belt in accordance with the thickness and material of the thin conveyance object.

[Invention of claim 6]
According to the invention of claim 6, the first and second side support portions extending in the transport direction on both sides of the transport belt, and the first side support portion are extended forward from the second side support portion. A front extension part, a front end bridging bar laid between the front end part of the second side support part and the first side support part, a front end bridging bar extending forward from two axial positions and A pair of support arms disposed on the inner side, and a terminal pulley is rotatably supported at the front ends of the pair of support arms, and a sponge roller support member standing from the front end of the front extension portion, A sponge roller is rotatably supported in a cantilever state. By adopting such a configuration, it is possible to form an empty space on the front extension line of the second side support portion and on one side of the conveyance belt, and accordingly, the standby stacking upper portion is brought close to the conveyance belt. It becomes possible to arrange.

[Invention of Claim 7]
According to the invention of claim 7, the thin transported objects are stacked on the standby stacking portion with the front side on which the delivery destination information is printed facing upward, and the thin transported object groups are sequentially formed from the lower end side. One by one. The thin transported material extracted from the upper part of the standby stack is slide-fed to the classification device with the front side on which the destination information is printed facing the reader, and based on the destination information read by the reader, The thin conveyance is classified into groups having common attributes. Here, since the thin transported material is supplied to the standby product upper portion by the thin transported material supply device according to any one of claims 1 to 6, the slide transport from the multifeed restricting transport device is performed. It is possible to avoid a situation in which the delivered thin information is turned over and the destination information cannot be read.

  Further, in general, in a multi-feed regulating transport device that extracts and feeds a thin transported material one by one from the lower end side of the upper standby product by frictional contact between the thin transported product and a driving rotating body, If the amount of stacking at the upper part is too large or too small, the balance of frictional resistance will be lost and it will be difficult to pull out thin transported items one by one. For this reason, when replenishing the thin conveyed product to the upper part of the standby stack, it is necessary to frequently replenish an appropriate amount. However, in the conventional transported object classification system, the operator performs replenishment of the thin transported material on the upper part of the standby stack, and the work load is large.

  On the other hand, the conveyed product classification system according to the present invention includes a thin conveyed product supply device according to any one of claims 1 to 6 and a stacked detection means for detecting a stacked amount in an upper portion of the standby stack. And a stacking control unit that switches activation and deactivation of the thin-type conveyed product supply device based on the detection result of the built-up detection means. In response to this, it operates intermittently and automatically replenishes the thin conveyed product so that the accumulated amount is maintained in an appropriate range.

  Here, in the present invention, the replenishment work of the thin transport object that has been conventionally performed for the upper part of the standby stack is required for the thin transport object supply device. Unlike the multi-feed restricted transport device, the thin transported items are not extracted and fed one by one, but the thin transported items are transported in an overlapped state. Compared with the case of replenishing the multi-feed restricted transport apparatus, more thin transport objects can be replenished at a time than the apparatus. That is, it is possible to reduce the frequency of the replenishment work of the thin transported object as compared with the conventional case, and to reduce the burden on the operator.

Schematic diagram of transported object classification system according to an embodiment of the present invention Side view of thin-type conveyed product supply device and multi-feed restricted conveying device Plan view of thin-type conveyed product supply device and multi-feed restricted conveying device Side view of multi-feed restricted transport device Side view of thin-type conveyed product supply device Plan view of thin-type conveyed product supply device with the conveyor belt removed Sectional drawing in the XX cut surface of FIG. Sectional drawing in the YY cut surface of FIG. Perspective view of the loading holder Cross section of sponge roller Enlarged view of the end of the thin-type conveyed product feeder Side view of thin-type conveyed product supply apparatus according to another embodiment

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the entire conveyed product classification system 100. The transported object classification system 100 automatically classifies, for example, a postcard W having destination information written on the front side based on the destination information. , And the classification device 20. The postcard W is supplied from the thin-type conveyed product supply device 30 to the multifeed restricting transport device 10 and is sent from the multifeed restricting transport device 10 to the sorting device 20.

  The multifeed restricting and conveying apparatus 10 conveys the postcard W in the first horizontal direction H1, and has an open top surface that can be received in a state where a plurality of postcards W are stacked at the start end in the conveyance direction. An upper part 11 is provided. The standby stack upper portion 11 extends upward perpendicular to the conveyance direction, and restricts horizontal movement of a plurality of postcards W (hereinafter referred to as “postcard group Wg”) stacked on the standby stack upper portion 11. To do. Further, the postcard group Wg stacked on the standby stacking upper portion 11 is sequentially extracted from the lower end side and is slid and fed forward of the standby stacking upper portion 11.

  The lower end portion of the front wall 11 </ b> A of the standby product upper portion 11 is a straw plate 13 that protrudes obliquely downward toward the front side in the transport direction. The postcard W can enter the gap.

  As shown in FIG. 4, a plurality of belt conveyance sections 15 are provided below the standby product upper portion 11 in the multifeed regulation conveyance apparatus 10. Each belt conveyance unit 15 spans a rotating belt 15B (corresponding to the “drive rotating body” of the present invention) between a pair of pulleys 15A and 15A. It is exposed on the bottom (see FIG. 3). Then, the plurality of rotating belts 15B are brought into frictional contact with the lowermost postcard W of the postcard group Wg placed on the standby stack upper portion 11, and the postcard W is slid forwardly to the front of the standby stack upper portion 11. To pay.

  As shown in FIGS. 3 and 4, the rear wall 11 </ b> B of the standby product upper portion 11 has a band plate shape that stands vertically from the bottom surface of the standby product upper portion 11, and faces the front wall 11 </ b> A. A pair of inclined plates 16 are provided on both sides of the rear wall 11B in the width direction. The inclined plate 16 has a hypotenuse that slopes forward and downward, and the hypotenuse comes into contact with the postcard group Wg stacked on the standby stacking upper portion 11. The inclined plate 16 pushes the lower end of the postcard group Wg so as to push forward, and the postcards W pushed out are shifted in the transport direction. Here, the rear wall 11B and the inclined plate 16 are joined together to form an integral part, which can be moved back and forth in the transport direction. That is, it is possible to change the size of the standby stack upper portion 11 in accordance with the size of the postcard W and other thin transported items.

  In the multifeed restricting conveyance device 10, a multifeed restricting member 17 is provided in front of the standby stacking upper portion 11. The multifeed restricting member 17 is abutted against the upper surface of the rotating belt 15B with a predetermined nip gap. The multifeed restricting member 17 has a smaller coefficient of friction than the coefficient of friction of the rotary belt 15B against the postcard W in a state where the postcard W extracted from the lower end of the standby stacking upper part 11 is sandwiched between the rotary belt 15B. The postcard W that is in sliding contact with the rotary belt 15B is squeezed into one sheet. That is, when a plurality of postcards W are overlapped and entered between the rotating belt 15B and the lower end portion of the scooping plate 13, only the lowermost sheet is connected to the rotating belt 15B and the multifeed restricting member 17. Is allowed to pass between the two, and the passage of another postcard W superimposed thereon is prohibited. As a result, the postcards W can be separated one by one so that the postcards W do not overlap each other, and the postcards W can be extracted from the standby stacking upper portion 11. Note that the configuration of the multifeed restricting member 17 is the same as that disclosed in Japanese Patent No. 4246692 or Japanese Patent No. 43944741 filed earlier by the applicant of the present application and patented. Description is omitted.

  In order to continuously extract the postcards W one by one from the lower end of the standby stacking upper portion 11, it is necessary to maintain the stacked amount of the postcard group Wg, which is reduced by being extracted, within an appropriate range. Accordingly, the transported object classification system 100 includes a stacking detection unit that detects the postcard group Wg stacking amount in the standby stacking upper portion 11. The stack detection means in the present embodiment is, for example, a height that is arranged on the side or top of the standby stack upper portion 11 and detects the height of the postcard group Wg stacked on the standby stack upper portion 11 in a non-contact manner. This is a sensor 18. The detection result by the height sensor 18 is captured by the controller 19 (see FIG. 1). When the amount of stacking increases and the upper limit of the appropriate range is reached, the controller 19 stops the thin article supply device 30 and stands by. The supply of the postcard W to the upper stack 11 is stopped. On the other hand, when the stacked amount decreases and becomes the lower limit of the appropriate range, the controller 19 activates the thin conveyed product supply device 30 and the supply of the postcard W to the standby stacking upper portion 11 is resumed. The controller 19 corresponds to a “rolling control unit” of the present invention.

More specifically, the first frictional resistance, which is the frictional resistance between the postcards W for extracting one postcard W from the lower end of the standby stacking upper portion 11, is “f1”, and the multifeed restricting member 17 slides on the postcard W. When the second frictional resistance that is the frictional resistance at the time of contact is “f2” and the third frictional resistance that is the frictional resistance between the postcard W and the rotating belt 15B is “f3”, The conditions for extracting one postcard W from the
f1 <f2 <f3
The above relational expression holds. Of these three frictional resistances f1 to f3, the first frictional resistance f1 and the third frictional resistance f3 increase as the accumulation amount increases, and decrease as the accumulation amount decreases. Then, the stacking amount of the postcard group Wg in the standby stack upper portion 11 when the first frictional resistance f1 and the second frictional resistance f2 are the same is set to “first balanced stacking amount” (“balanced stacking amount” of the present invention). Controller 19 when the stacking amount of the postcard group Wg in the standby stack upper portion 11 when the second frictional resistance f2 and the third frictional resistance f3 are the same is defined as the “second balanced stacking amount”. The stacking amount of the postcard group Wg in the standby stack upper portion 11 is thin so as to maintain a state (an appropriate range of the stacking amount) that is less than the “first balanced stacking amount” and larger than the “second balanced stacking amount”. The start and stop of the shaped article supply device 30 are switched.

  In FIG. 4, the multifeed restricting conveyance device 10 is in a horizontal posture in which the conveyance direction is substantially horizontal, but may be in a forward inclined posture in which the conveyance direction is lowered forward. The above is the description of the multifeed restricting conveyance device 10.

  As shown in FIG. 1, a classification device 20 is disposed in front of the conveyance direction by the multifeed restricting conveyance device 10. The classification device 20 includes a plurality of horizontal conveyance units 21 each having a rotating belt 21B bridged between a pair of pulleys 21A and 21A, and a plurality of classification boxes 22 capable of receiving postcards W. The horizontal conveyance unit 21 is arranged in a column in the first horizontal direction H1, and the postcards W fed one by one from the multi-feed regulating conveyance device 10 at a predetermined interval are transferred to the plurality of horizontal conveyance units 21. It conveys in 1st horizontal direction H1, passing between them. In addition, each horizontal transport unit 21 is switched by the controller 19 between a horizontal posture and a tilted posture tilted forwardly.

  The classification boxes 22 are provided one by one corresponding to each of the plurality of horizontal transport units 21, and are arranged in a row in the first horizontal direction H <b> 1 below the horizontal transport unit 21. A reading device 22 for reading destination information printed on the front side of the postcard W (for example, character information such as a zip code or an address or a bar code obtained by converting them) is provided at the start position in the transport direction in the sorting device 20. (For example, a camera, a scanner, a barcode reader, etc.) are provided. The delivery destination information read by the reading device 22 is taken into the controller 19, and any one of the horizontal transport sections 21 corresponding to the delivery destination information is switched to the forward and downward inclined posture, and the postcard W being transported is designated by the classification. It is put into the box 22. Thereby, postcards W having common attributes can be collected in the same classification box 22. Note that the classification device 20 is not limited to the configuration described above.

  Next, the thin conveyed product supply apparatus 30 will be described. As shown in FIG. 1, the thin-type conveyed product supply apparatus 30 includes a belt conveyor 31 in which a conveying belt 34 is bridged between a driving pulley 32 and a driven pulley 33. The belt conveyor 31 extends in the second horizontal direction H2 orthogonal to the first horizontal direction H1 from the upper side of the standby stacking upper portion 11.

  A base board 35 is provided inside the conveyor belt 34 of the belt conveyor 31 (see FIG. 6). The base board 35 is composed of a rectangular sheet metal extending in the conveyance direction, and a pair of side plates 35B, 35B is formed by bending both sides in the width direction at right angles to the lower surface side (see FIG. 7). A first side support bar 36 and a second side support bar 37 are fixed to the side plates 35B and 35B. As shown in FIG. 3, the first and second side support bars 36 and 37 are arranged on both sides of the transport belt 34 and extend in the transport direction.

  As shown in FIG. 6, the rear end portions of the first and second side support bars 36 and 37 are arranged in alignment with the rear end portions of the base board 35. The entire length of the second side support bar 37 is shorter than the base board 35, and the front end portion thereof is located on the rear side of the front end portion of the base board 35. The first side support bar 36 extends forward from the second side support bar 37, and the front end portion thereof is positioned forward of the front end portion of the base board 35. As shown in FIG. 7, the first and second side support bars 36, 37 are formed of square bars having a rectangular cross section generally called “extrusion profile”, and the outer side surfaces of the square bars are respectively axially arranged. Slots 36S and 37S having a T-shaped cross section are formed. A portion of the first side support bar 36 that extends forward from the second side support bar 37 corresponds to the “front extension” of the present invention.

  As shown in FIG. 5 to FIG. 7, connecting bars 38, 38 are bridged between the first side support bar 36 and two positions on the center side from both ends of the second side support bar 37. Yes. The connecting bars 38, 38 are also made of extruded shapes.

  As shown in FIG. 6, the drive pulley 32 and the driven pulley 33 of the belt conveyor 31 are provided on both sides of the base board 35 in the longitudinal direction, and the carrier of the transport belt 34 spanned between them. A base board 35 is sandwiched between the side 34C and the return side 34R (see FIG. 7). A plurality of belt support plates 39 are fixed to the upper surface of the base board 35. As shown in FIG. 6, the belt support plate 39 has a long plate shape extending in the longitudinal direction of the base board 35, and is arranged in a so-called “crown” shape with a gap between each other in the width direction of the base board 35. Has been. As shown in FIG. 7, the belt support plate 39 is directed to the lower surface of the carrier side 34C of the conveyor belt 34, and supports the carrier side 34C so that it does not slack. The belt support plate 39 is made of a material having a low frictional resistance (for example, polyacetal resin).

  As shown in FIG. 7, a protrusion 34 </ b> A is provided on the inner surface of the transport belt 34 that is in contact with the outer peripheral surfaces of the drive pulley 32 and the driven pulley 33. The protrusion 34 </ b> A is provided continuously in the circumferential direction of the conveyor belt 34 at the center in the width direction of the conveyor belt 34. On the other hand, as shown in FIG. 6, annular grooves 32 </ b> A and 33 </ b> A are formed in the axial intermediate portions of the outer peripheral surfaces of the drive pulley 32 and the driven pulley 33, respectively. In addition, a linear groove 35 </ b> A that extends linearly between both longitudinal ends of the base board 35 is formed at the center in the width direction of the base board 35. The straight groove 35 </ b> A is formed by a gap between the belt support plates 39 fixed to the upper surface of the base board 35. The protrusion 34A of the conveying belt 34 is engaged with the annular grooves 32A, 33A and the linear groove 35A so that the movement of the conveying belt 34 in the width direction is restricted, and the deviation or twisting of the conveying belt 34 is prevented. Has been.

  As shown in FIG. 5, a housing 40 is provided at the rear end of the thin transported article supply device 30. The housing 40 accommodates a drive pulley 32 (corresponding to the “starting pulley” of the present invention) and a motor 43 for rotationally driving the drive pulley 32.

  As shown in FIG. 6, the housing 40 includes a first side case 41 and a second side case 42 that face each other with the starting end portion of the belt conveyor 31 interposed therebetween. Both the side cases 41 and 42 have case facing plates 41A and 42A projecting rearward from the rear ends of the first and second side support bars 36 and 37, respectively, and these case facing plates 41A and 42A. However, the first and second side support bars 36 and 37 are fixed to the side surfaces of the rear end portions. Further, the drive pulley 32 is horizontally extended between the pair of case facing plates 41A and 42A, and both ends thereof are rotatably supported. The first side support bar 36 and the case facing plate 41A projecting rearward thereof correspond to the “first side support portion” of the present invention, and projected to the second side support bar 37 and rearward thereof. The case facing plate 42A corresponds to the “second side support portion” of the present invention.

  Transmission pulleys 32P and 43P are fixed to one end of the drive pulley 32 and the output shaft of the motor 43, respectively, and a timing belt 44 is bridged between the transmission pulleys 32P and 43P. The transmission pulleys 32P and 43P and the timing belt 44 are accommodated in the first side case 41 (see FIG. 6).

  A front end bridging bar 46 is provided on the lower surface of the base board 35 at a position closer to the front end than the longitudinal intermediate portion (see FIG. 6). The front end bridging bar 46 is spanned between the front end portion of the second side support bar 37 and the first side support bar 36 in a state where the front end bridging bar 46 is addressed to the lower surface of the base board 35. The two side support bars 36 and 37 and the base board 35 are fixed (screwed).

  As shown in FIG. 6, a pair of support arms 47 and 47 are provided on the lower surface of the base board 35 in front of the front end bridge bar 46. These support arms 47, 47 extend forward along the both sides of the base board 35 from positions near both ends in the axial direction of the front end bridging bar 46. Further, the support arms 47 and 47 are fixed to the front end bridging bar 46 and the base board 35 by screwing the base end part against the front end bridging bar 46 in a state of being addressed to the lower surface of the base board 35 (screwing). ) The front end bridging bar 46 and the pair of support arms 47, 47 are disposed inside the transport belt 34 together with the base board 35. The front end cross-linking bar 46 is formed of an extruded shape.

  The pair of support arms 47, 47 has a rectangular column shape with a rectangular cross section, and the front end portion projects forward from the front end portion of the base board 35. Further, a driven pulley 33 (corresponding to the “terminal pulley” of the present invention) is horizontally provided between the front ends of the support arms 47 and 47 so as to be rotatably supported. Specifically, as shown in FIG. 10, in the driven pulley 33, small-diameter shaft portions 33 </ b> J and 33 </ b> J having an outer diameter smaller than that of the entire driven pulley 33 are located at two positions away from the both ends in the axial direction toward the center side. Is provided. On the other hand, bearing holes 47A and 47A are formed at the front end portions of the pair of support arms 47 and 47, respectively, and the small diameter shaft portions 33J and 33J are rotatably supported by the bearing holes 47A and 47A. ing. Further, the portions where the small-diameter shaft portions 33J and 33J are formed are constricted portions 33A and 33A having diameters reduced in steps with respect to the both side portions, and both support arms 47 are provided on the constricted portions 33A and 33A. , 47 are received respectively.

  As shown in FIG. 5, a stacking holder 50 capable of mounting a plurality of postcards W stacked vertically is provided at a portion near the rear end of the belt conveyor 31. The stacking holder 50 is provided with a front plate 51 for restricting forward movement of the stacked postcard group Wg. The front plate 51 is disposed above an intermediate portion in the conveying direction by the belt conveyor 31, crosses the upper side of the conveying belt 34 in the width direction, and stands upright with respect to the upper surface of the conveying belt 34.

  As shown in FIG. 9, a height regulating gate 52 is provided at the lower end of the front plate 51. The height regulating gate 52 includes an inclined guide plate 52A protruding from the lower end edge of the front plate 51 to the front side obliquely downward in the transport direction, and a folded plate 52B rising upward from the lower end edge of the inclined guide plate 52A. The postcard W can pass between the lower end edge of the inclined guide plate 52 </ b> A and the conveyor belt 34. The postcard W placed on the stacking holder 50 slides forward by frictional contact with the transport belt 34, passes through the lower part of the height regulating gate 52, and is extracted to the front of the stacking holder 50. In addition, when a plurality of postcards W are stacked and placed, not only the bottom postcard W that is in direct contact with the conveyor belt 34 but also a plurality of postcards W superimposed on the postcard W are together. Slide forward. At this time, the plurality of postcards W slid together are shifted forward and backward in the transport direction by contacting the inclined guide plate 52A. As a result, a plurality of postcards W are continuously extracted from the lower end of the stacking holder 50 in a state where the postcards W are displaced in a scaly manner (see FIG. 9). Further, the postcard group Wg extracted from the stacking holder 50 in a state of being overlaid is leveled so that its height is equal to or lower than a predetermined upper limit, so that the postcards that are continuously conveyed on the conveyor belt 34 are conveyed. An extreme difference in height is prevented from occurring in the group Wg. The height regulating gate 52 is formed by bending a belt-like sheet metal into a V-shape at an intermediate portion in the width direction to form an inclined guide plate 52A and a folded plate 52B. Since the bent portion, which is the lower end edge of the inclined guide plate 52A, is rounded by bending deformation, the postcard W can pass smoothly without being caught by the lower end edge of the inclined guide plate 52A.

  A pair of bracket plates 54, 54 are fixed to both sides of the front plate 51 in the width direction. These bracket plates 54 extend in the vertical direction and have a belt plate shape with the belt conveyor 31 sandwiched in the width direction. The bracket plate 54 protrudes below the front plate 51 and is fixed to the side surfaces of the first and second side support bars 36 and 37. More specifically, a screw penetrating the bracket plate 54 is inserted into slots 36S and 37S opened on the side surfaces of the first and second side support bars 36 and 37, and nuts disposed in the slots 36S and 37S (see FIG. (Not shown).

  Side plates 55 and 55 are provided at positions near both ends in the width direction of the front plate 51. The side plate 55 projects in a right angle from the rear surface of the front plate 51 and has a strip shape extending over the entire vertical direction of the front plate 51. Further, the side plates 55, 55 are bent in a “<” shape at the center in the width direction, and the rear side of the bent portion is inclined so as to be separated from the front plate 51.

  A back plate 56 for aligning the rear corners of the postcard group Wg is disposed behind the front plate 51. The back plate 56 is made of a sheet metal having an L-shaped cross section extending in the vertical direction, and stands upright while being abutted against the upper surface of the conveyor belt 34. The stacking holder 50 includes a front plate 51, a side plate 55, and a back plate 56, and extends vertically upward with respect to the transport belt 34 (see FIG. 9).

  As shown in FIG. 5, a pair of bearing rollers 57, 57 arranged in the transport direction are attached to the lower end portion of the back plate 56. These bearing rollers 57 slightly protrude from the lower end portion of the back plate 56, and the lower end portion of the back plate 56 is floated above the conveying belt 34. The bearing roller 57 is always in contact with the upper surface of the conveyor belt 34 and is driven to rotate as the conveyor belt 34 rotates.

  As shown in FIG. 6, the back plate 56 is fixed to the tip of the cantilever shaft 58. The cantilever shaft 58 extends in the width direction above the conveyor belt 34, and a base end portion thereof is supported by the shaft support plate 59.

  The shaft support plate 59 has a flat square plate shape extending in the vertical direction, and a support hole 59A is formed through the upper end portion thereof (see FIG. 8). The cantilever shaft 58 is inserted into the support hole 59 </ b> A so as to be linearly movable, and is fixed in the axial direction by a set collar 60 fixed to the shaft support board 59. The back plate 56 can be arranged at an arbitrary position in the width direction of the conveyor belt 34 by the tightening and loosening operation of the set collar 60.

  The lower end portion of the shaft support board 59 is fixed to the side surface of the first side support bar 36. Specifically, a pair of upper and lower clamp levers 61 and 61 (see FIG. 8) penetrating the lower end of the shaft support board 59 are opened to a side surface of the first side support bar 36 and a pair of upper and lower slots 36S and 36S. Inserted, the ends of the clamp levers 61, 61 are screwed with nuts (not shown) arranged in the slots 36S, 36S. By tightening the clamp levers 61, 61, the shaft support plate 59 is sandwiched and fixed between the clamp lever 61 and the first side support bar 36. When the clamp levers 61, 61 are loosened, the shaft support plate 59 can slide in the transport direction. That is, the back plate 56 can be moved not only in the width direction of the transport belt 34 but also in the transport direction, and the stacking holder 50 is changed according to the size of the postcard W or other thin transported objects. It is possible to change the size of.

  Now, as shown in FIG. 5, a sponge roller 70 is provided above the terminal end in the conveying direction of the belt conveyor 31. The sponge roller 70 extends in the width direction of the transport belt 34 at a position directly above the driven pulley 33. Further, the sponge roller 70 is in contact with the terminal portion of the carrier side 34C (specifically, the portion supported from the inside by the driven pulley 33) in the transport belt 34, or in a state of being close to each other with a predetermined gap. Has been placed.

  As shown in FIG. 10, the sponge roller 70 is rotatably supported by a roller shaft 78 penetrating through the center portion thereof. Specifically, the sponge roller 70 has a configuration in which a cylindrical urethane sponge 72 is fixed to the outer peripheral surface of a pipe-shaped shaft sleeve 71. The roller shaft 78 penetrates the inside of the shaft sleeve 71 in a loosely fitted state, and bearings 73, 73 are fitted between the inner peripheral surface of both ends of the shaft sleeve 71 and the outer peripheral surface of the roller shaft 78. ing. Set collars 74 are fixed to both sides of the roller shaft 78 across the sponge roller 70, and the set collar 74 prohibits movement of the sponge roller 70 in the axial direction relative to the roller shaft 78. ing. Here, the sponge roller 70 has a larger diameter than the driven pulley 33. In this embodiment, the outer diameter of the sponge roller 70 is about four times the outer diameter of the driven pulley 33.

  The sponge roller 70 is attached close to the distal end side of the roller shaft 78, and the base end portion of the roller shaft 78 is cantilevered by a shaft support board 75 (corresponding to the “sponge roller support member” of the present invention). Supported by the state.

  As shown in FIG. 10, the shaft support plate 75 stands upward from the front end portion of the first side support bar 36. The shaft support plate 75 has a flat square plate shape, and a support hole 75A is formed through the upper end portion. The roller shaft 78 is inserted into the support hole 75 </ b> A so as to be linearly movable, and is fixed in the axial direction by a set collar 76 fixed to the shaft support board 75. That is, the sponge roller 70 can be disposed at an arbitrary position in the width direction of the transport belt 34 by the tightening and loosening operation of the set collar 76.

  The lower end portion of the shaft support board 75 is fixed to the side surface of the first side support bar 36. This fixing structure is exactly the same as the fixing structure of the shaft support board 59 described above. That is, a pair of upper and lower clamp levers 77 and 77 penetrating the lower end portion of the shaft support board 75 are inserted into a pair of upper and lower slots 36S and 36S opened on the side surface of the first side support bar 36, and these clamp levers. The tips of 77 and 77 are screwed with nuts (not shown) arranged in the slots 36S and 36S. By tightening the clamp levers 77, 77, the shaft support plate 75 is sandwiched and fixed between the clamp lever 77 and the first side support bar 36. Further, when the clamp levers 77 and 77 are loosened, the shaft support plate 75 can slide in the transport direction. That is, the position of the sponge roller 70 can be adjusted in the width direction of the transport belt 34 and the transport direction.

  In this embodiment, the shaft support plate 75 is fixed by a pair of upper and lower clamp levers 77, 77. However, the shaft support plate 75 is formed through the shaft support plate 75, and a pair of through holes through which the clamp levers 77, 77 pass. (Not shown), since one through hole is a long hole, the sponge roller 70 is tilted back and forth in the transport direction, and the position of the sponge roller 70 is adjusted in the transport direction, The sponge roller 70 and the conveyor belt 34 can be brought into contact with or separated from each other, and the gap between them can be adjusted.

  In this embodiment, the roller shaft 78, which is the rotation center of the sponge roller 70, is disposed just above the driven pulley 33 (see FIG. 5). However, the roller shaft 78 and the driven pulley 33 are connected to each other. You may arrange | position slightly shifted in a conveyance direction.

  The configuration of the present embodiment is as described above. Next, operation | movement description of the conveyed product classification system 100 of this embodiment is performed. The postcard group Wg that is stacked and stacked on the stacking holder 50 of the thin-type transported object supply device 30 so that the address side faces upward is fed by the belt conveyor 31 toward the double feed restricting transport device 10. The belt conveyor 31 sequentially extracts the postcard group Wg placed on the stacking holder 50 forward from the lower end side. Since a height regulating gate 52 having an inclined guide plate 52A that protrudes obliquely downward to the front side in the transport direction is provided at the lower end portion of the stacking holder 50, when being pulled out from the lower end portion of the stacking holder 50 In addition, the postcard group Wg is in a state of being shifted in a scaly manner in the transport direction (that is, the lower postcard W precedes the upper postcard W).

  The postcard group Wg that has passed under the height regulating gate 52 has a uniform overlap height, slides forward in a state of being overlaid, and reaches the end of the belt conveyor 31. . As shown in FIG. 11, the postcard group Wg that has reached the end portion enters between the conveyance belt 34 and the sponge roller 70 and is sandwiched between them. At this time, the sponge roller 70 is elastically deformed according to the height of the postcard group Wg that has entered between the conveyor belt 34 and is rotated by friction with the postcard group Wg.

  The postcard W that has passed between the conveyance belt 34 and the sponge roller 70 falls and accumulates on the standby stacking upper portion 11 provided in the multifeed restricting conveyance device 10. Here, the postcard W is sandwiched between the conveyor belt 34 and the sponge roller 70 until just before dropping from the terminal end of the belt conveyor 31 to the standby stacking upper portion 11. That is, as shown in FIG. 11, the postcard W protrudes in a bowl shape above the standby stack upper portion 11 and forward from the end portion of the conveyor belt 34 until just before dropping from the end portion of the conveyor belt 34. Since the state is maintained and it falls in its overhanging posture, the postcard W does not turn over when it falls on the standby stack upper portion 11, and the postcard group Wg stacked on the standby stack upper portion 11 Aligned to face up. Further, since the postcard W reaches the end portion in a state of being overlapped in a scaly manner, the postcards W are dropped one by one onto the waiting stack upper portion 11.

  When the stacking amount of the postcards W in the standby stacking upper portion 11 gradually increases and reaches a predetermined “reference stacking amount” larger than the “second balanced stacking amount”, the multifeed restricting conveyance device 10 is activated, Slide feeding of the postcard W is started from the standby product upper portion 11 toward the classification device 20. At this time, the postcard group Wg stacked on the standby stacking upper portion 11 is sequentially extracted forward from the lower end side. Further, the postcard W extracted from the standby stacking upper portion 11 is narrowed down to one by the multifeed restricting member 17. In other words, postcards W are slid and fed one by one from the multifeed restricted transport device 10 to the sorting device 20 with a predetermined interval between them.

  Since the supply amount of the postcard W per unit time by the thin conveyance object supply device 30 is larger than the discharge amount per unit time from the upper portion 11 of the standby product, the postcard to the classification device 20 by the multifeed restricting conveyance device 10. Even if the supply of W is continued, the amount of postcards W stacked in the standby upper portion 11 gradually increases. When the stacking amount in the upper standby stack 11 becomes a predetermined “stop stacking amount” that is less than the “first balanced stacking amount” described above, the thin article supply device 30 stops and the waiting stacking The supply of the postcard W to the upper part 11 is stopped.

  In the state where supply of the postcard W to the standby stacking upper portion 11 is stopped, the supply of the postcard W by the multi-feed restricting conveyance device 10 is continued, so that the amount of stacking in the standby stacking upper portion 11 gradually decreases. Then, when the stacking amount in the standby stacking upper portion 11 becomes the “reference stacking amount” again, the thin-type conveyed product supply device 30 is restarted, and the supply of the postcard W to the standby stacking upper portion 11 is resumed. Thereafter, the thin article supply device 30 is intermittently operated according to the stacking amount in the standby stacking upper portion 11, and the stacking amount in the standby stacking upper portion 11 is less than the “first balanced stacking amount” and “second It is maintained in a state larger than the “balanced stacking amount”, more specifically, not more than a predetermined “stop stacking amount” and not less than the “reference stacking amount”.

  The postcards W carried out from the multifeed restricted transport device 10 pass one by one under the reading device 22 arranged at the start position of the sorting device 20 with the address side facing upward, and are written on the address surface. Among the delivery destination information, for example, “zip code” is read by the reading device 22. The postcards W that have passed through the reading device 22 are sequentially delivered and transported forward between the plurality of horizontal transport units 21 arranged in tandem in the first horizontal direction H1. Then, based on the zip code read by the reading device 22, any one of the plurality of horizontal transport units 21 is switched to a forward-downward inclined posture, and the postcard W being transported is put into the designated classification box 22. . As a result, a plurality of postcards W having the same zip code (for example, the same first three digits of the zip code) are collected in the same classification box 22. In addition, the postcard W is further classified according to the zip code by performing such a classification process over a plurality of times.

  As described above, according to the thin conveyed product supply apparatus 30 of the present embodiment, the postcard group Wg conveyed in a state of being overlapped on the conveying belt 34 is connected to the sponge roller 70 and the conveying belt at the end of the conveying belt 34. 34, the sponge roller 70 is driven to rotate by friction with the postcard group Wg passing between the conveyor belt 34 and the sponge roller 70. Here, before the postcard group Wg enters between the sponge roller 70 and the conveyor belt 34, the postcard group Wg is displaced in a scaly manner by passing through the height regulating gate 52 provided above the intermediate portion of the conveyor belt 34. The level of the postcard group Wg after the leveling is absorbed by the elastic deformation of the sponge roller 70 so as to be in an overlapped state and equal to or less than a predetermined upper limit height. The postcard W can be sandwiched between the conveying belt 34 from the end of the conveying belt 34 to just before dropping to the standby stacking upper portion 11. Thereby, when falling from the terminal part of the conveyance belt 34, it is possible to prevent the postcard W from being greatly lowered forward, and it is possible to prevent the postcard W from being turned over in the standby stacking upper portion 11. Then, the postcard W can be stacked on the waiting stack upper portion 11 with the front and back sides aligned.

  Further, by making the second side support bar 37 shorter than the first side support bar 36, an empty space is formed on the front extension line of the second side support bar 37 and on one side of the transport belt 34. Therefore, it is possible to arrange the standby product upper portion 11 of the multifeed restricting conveyance device 10 close to the conveyance belt 34 from the side.

  Furthermore, the conveyed product classification system 100 according to the present embodiment is based on the above-described thin conveyed product supply device 30, the height sensor 18 that detects the amount of stacking in the standby stacking upper portion 11, and the detection result of the height sensor 18. And a controller 19 for switching the start and stop of the thin-type conveyed product supply device 30, and the thin-type conveyed product supply device 30 intermittently according to the amount of the postcard group Wg stacked in the standby stacking upper portion 11. Operates and automatically replenishes so that its stack is maintained in the proper range.

  Here, in the present embodiment, the replenishment work of the postcard W, which has been conventionally performed on the standby stacking upper portion 11, is required for the thin transported object supply device 30, but the thin transported object supply device 30. Is not for picking up and feeding postcards W one by one so that the postcards W do not overlap each other as in the multifeed restricting transport device 10, but transports a plurality of postcards W in an overlapped state. Compared to the case where the postcard W is replenished to the upper part 11 of the standby product, more postcards W can be replenished at a time. That is, the frequency of replenishment work can be reduced and the burden on the operator can be reduced as compared with the case of refilling the standby product upper portion 11.

  In the above embodiment, the postcard W is exemplified as an example of the “thin transported object” according to the present invention. However, even a sealed letter, a booklet, and other thin transported objects have the same effects as the present embodiment. Further, the same effect can be achieved even when thin transport objects having different thicknesses are mixed.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

  (1) In the above embodiment, the front plate 51 and the back plate 56 stand upright with respect to the upper surface of the conveyor belt 34, and the stacking holder 50 extends perpendicularly to the upper surface of the conveyor belt 34. However, as shown in FIG. 12, the front plate 51 and the back plate 56 are inclined with respect to the upper surface of the conveyor belt 34, and the stacking holder 50 extends obliquely upward and rearward in the conveying direction. Also good. With this configuration, the postcard W can be extracted more smoothly from the lower end of the stacking holder 50.

  Further, an inclination angle adjusting mechanism that can arbitrarily change the inclination angle of the stacking holder 50 may be provided. Specifically, for example, the inclination angle of the back plate 56 can be changed by rotating the cantilever shaft 58 in the support hole 59 </ b> A of the shaft support board 59. Further, the lower end portion of the back plate 56 may be curved in an arc shape centered on the cantilever shaft 58 so as to be slidable on the upper surface of the transport belt 34.

  On the other hand, the front plate 51 has a pair of bracket plates 54 and 54 fixed to the first and second side support bars 36 and 37 with a single screw, and tilted about the screws to be inclined. Can be changed. If it does in this way, it will become possible to adjust the inclination-angle of the stacking holder 50 according to the material and thickness of a thin conveyance thing.

  (2) In the embodiment described above, the transported object classification system 100 is configured by combining the thin transported object supply device 30, the multifeed restricted transport device 10, and the classification device 20, but among these, the classification device 20 is included. May be replaced with, for example, a printing apparatus (specifically, an ink jet printer), and a continuous printing system that performs printing on a thin-type conveyance object that is slid and fed one by one from the multi-feed regulating conveyance apparatus 10 may be configured. Good. The thin transported object that is the object to be printed may have no distinction between the front and the back, but there is a distinction between the front and back, for example, a government-made postcard in which the address side and the communication side are distinguished, or one side is subjected to surface processing. In the case where continuous printing is performed on the coated coated paper for printing, the thin transport object supply device 30 of the present invention that can stack the thin transport object on the standby stacking upper portion 11 without turning it over is particularly effective. It is.

  (3) In addition, the classification device 20 in the conveyed product classification system 100 of the above-described embodiment is replaced with a known automatic binding and sorting device, and the reader 22 reads the thin conveyed product carried out from the multifeed restricted conveying device 10. A system that automatically sorts and binds based on the read destination information may be configured.

DESCRIPTION OF SYMBOLS 10 Multifeed regulation conveyance apparatus 11 Stand-by product upper part 15B Rotating belt (drive rotary body)
17 Multifeed restricting member 18 Height sensor (stack detection means)
19 Controller (rolling control unit)
20 Sorting device 22 Reading device 30 Thin conveyance object supply device 32 Drive pulley (start pulley)
33 Driven pulley (terminal pulley)
33J Small-diameter shaft portion 34 Conveying belt 36 First side support bar 37 Second side support bar 41A Case facing plate 42A Case facing plate 46 Front end bridging bar 47 Support arm 50 Lifting holder 52 Height regulating gate 52A Inclined guide plate ( Tilt guide)
70 sponge roller 75 shaft support board (sponge roller support member)
100 Transported goods classification system W Postcard (Thin type transported goods)

Claims (7)

A thin transported product that feeds the thin transported material from the upper side to the waiting stack upper part that accepts postcards, sealed letters, booklets and other thin transported materials in a stacked state. In the supply device,
A height regulating gate that is arranged above the intermediate portion in the conveying direction of the conveying belt and leveles the thin conveyed object group that is conveyed while being overlapped on the conveying belt so as to be equal to or lower than a predetermined upper limit height. When,
Of a plurality of pulleys that contact the conveyor belt from the inside, the sponge is disposed above the terminal pulley located at the terminal end in the conveying direction, and is driven to rotate while sandwiching the thin conveyance object with the conveyor belt. A thin-type conveyed product supply apparatus comprising a roller.   The height regulating gate has an inclined guide extending obliquely downward to the front side in the conveying direction from an upper position of the conveying belt, and the thin conveyed object group passing below is leveled in a scalpel-like state. The thin-type conveyed product supply apparatus according to claim 1.   3. The thin type according to claim 1, further comprising a stacking holder that holds the thin transported group in a state of being stacked on the transport belt and has the height regulating gate on the front side. Conveyance supply device.   4. The thin article supply apparatus according to claim 3, wherein the stacking holder extends obliquely upward and rearward from the conveyance belt in the conveyance direction.   The thin-type conveyed product supply apparatus of Claim 4 provided with the inclination-angle adjustment mechanism for changing arbitrarily the inclination-angle of the said stacking holder with respect to the said conveyance belt. First and second side support portions disposed on both sides of the transport belt and extending in the transport direction;
A start pulley that supports the start end of the transport belt from the inside, and is rotatably supported between the rear ends of the first and second side support portions;
A front extension formed by extending the first side support portion forward from the second side support portion;
A front-end bridging bar disposed between the front end portion of the second side support portion and the first side support portion and disposed inside the conveyor belt;
Providing a pair of support arms extending forward from two axial positions of the front end bridging bar and disposed inside the conveyor belt;
The terminal pulley is provided at two positions away from the both ends in the axial direction toward the center side, and has an outer diameter smaller than that of the entire terminal pulley, and receives the front ends of the pair of support arms, A pair of small diameter shafts rotatably supported by the front end of the support arm;
6. A sponge roller support member that stands upward from a front end portion of the front extension portion and that is rotatably supported with the sponge roller in a cantilever state. The thin-type conveyed product supply apparatus of Claim. A postcard, a sealed letter, etc. with destination information printed on the front side, and a stand-by stacking top with an open top that accepts thin transported items with the front side facing up,
The thin transported object at the lowermost part of the standby product is in frictional contact with a friction coefficient larger than the friction coefficient between the thin transported products, and the thin product is formed from the lower end side of the standby product upper part. A drive rotator that pulls the conveyed product forward in the first horizontal direction and feeds the slide;
A rotational driving body for the thin transported object, which is disposed in front of the upper part of the standby stack and is sandwiched between the thin transported object extracted from the thin transported object group and the driving rotating body. A multifeed restricting member having a multifeed restricting member that slidably contacts with a friction coefficient smaller than that of the drive rotating body and squeezes the thin transported object that passes between the drive rotating body to one, and
Read the destination information printed on the thin transported materials fed one by one from the multifeed restricted transport device, and classify the thin transported materials into groups having common attributes based on the destination information. A transported object classification system including a classification device for
A stacking detection means for detecting a stacked amount of the thin transported object in the standby stacking upper part,
The thin transported material is transported by a transport belt in a second horizontal direction orthogonal to the first horizontal direction, and is supplied from the upper side toward the standby product upper portion of the multifeed restricting transport device. A thin conveyance object supply apparatus according to any one of claims 1 to 6;
A first frictional resistance which is a frictional resistance between the thin transported objects for extracting one thin transported object from the lower end of the standby stack upper part, and the multifeed restricting member slides on the thin transported object. When the stacked amount of the thin conveyed product at the upper part of the standby stack when the second frictional resistance that is the frictional resistance at the time of contact is the same, the detection result is obtained from the stacked detection means. Then, switching the start and stop of the thin transport object supply device so that the stack amount of the thin transport object in the upper part of the standby stack is less than the balanced stack amount and equal to or more than a predetermined reference stack amount. A conveyed product classification system comprising: a loading control unit.

Images