JP5518351B2 - Sorting device - Google Patents

Description

  The present invention relates to a sorting device that dispenses and sorts conveyed items.

  Some of the sorting apparatuses that have been proposed in the past protrude from the gap between a plurality of transport rollers arranged as a roller conveyor section to the transport surface, and transport the transported object in the axial direction of the roller, in other words, the transport direction of the transported object. And a sorting device including a plurality of sorting members such as sorting pins that move in a direction perpendicular to the direction. In this sorting apparatus, a sorting pin fixed directly or indirectly to the chain belt is moved by a chain belt wound around at least a pair of sprockets near the lower part of the conveying surface formed by a plurality of conveying rollers. There is a sorting pin driving unit to be operated. Due to the structure of the sorting pin driving unit, the sorting pin is retracted from the conveying surface while being inclined when the sprocket portion of the chain belt is revolving. When the sorting pins are retracted from the conveying surface while being inclined, the conveyed product is bitten between the sorting pins and the conveying rollers, so that the sorting pins can be retracted from the conveying surface without being inclined. A sorting device has been devised (see, for example, Patent Document 1).

JP-A-8-208029

  However, in order to retract the sorting pins from the transport surface without inclining, it is necessary to retract the sorting pins in a direction perpendicular to the transport surface. The structure of the drive mechanism that enables the operation of such sorting pins Is complicated, and the sorting apparatus itself is increased in size.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sorting apparatus that can prevent biting of a conveyed product between a sorting member and a conveying roller with a simple configuration.

In order to solve the above-described problem, the sorting apparatus according to the present invention includes a plurality of conveying rollers arranged in the main conveying direction along the direction perpendicular to the main conveying direction of the conveyed object. At least one of the transport rollers to be driven and a surface including the apex of the plurality of transport rollers arranged as a transport surface, a roller conveyor unit that transports the transported object, and a lower part of the roller conveyor unit, A discharge unit that discharges a conveyed product conveyed in the main conveying direction by the roller conveyor unit in a sub-conveying direction that intersects the main conveying direction, and the discharging unit has a predetermined amount in the main conveying direction. A pair of at least two pairs of rings and a pair of at least two sets of rings that are spaced apart and whose axial direction is the main transport direction. An endless rotary body to be hung can equal intervals in the running direction of the endless rotary body, and said at intervals of half the circumference of the endless rotary body, and so that the longitudinal direction is the main transport direction in the same direction, the Two connecting members whose both ends in the longitudinal direction are fixed to each of the endless rotating bodies, and one of the two connecting members provided along each of the two connecting members along the axial direction of the conveying roller. A sorting member that protrudes from below the carrying surface when moving in the vicinity of the lower side of the carrying roller and presses a conveyed product carried in the main carrying direction in a sub carrying direction that intersects the main carrying direction, and the sorting detecting means for detecting that the member has reached a predetermined position immediately before the center of rotation to the shaft 180 of the pair of wheels body provided at least two pairs, the sorting member is detected by said detecting means In response to that the, to wait just before projecting the sorting member vertically upward by stopping the endless rotary body slow moving state of constant speed, when receiving a payout signal, first a predetermined period, the after the endless rotary bodies moved at high speed, the first second, different time period as a period, a low speed the sorting member to the pair of wheel unit around at a constant speed to be rapid deceleration velocity change from the fast moving And a drive control unit that intermittently drives the endless rotating body by half a cycle so that the transported object is ejected in a form that is pushed away from the sorting member by being moved. .

The sorting apparatus according to the present invention includes a plurality of transport rollers arranged along the main transport direction, and a plurality of the transport rollers that are rotatable about the direction perpendicular to the main transport direction of the transport object. A support frame member on both sides to be supported, and at least one of the plurality of transport rollers arranged is driven, and the transport object is transported with a surface including a vertex of the plurality of transport rollers arranged as a transport surface. A roller conveyor section, and a payout section that is provided below the roller conveyor section, and that delivers a conveyed product conveyed in the main conveying direction by the roller conveyor section in a sub-conveying direction that intersects the main conveying direction. And at least two pairs of ring bodies provided with at least two sets so that a predetermined interval is provided in the main transport direction and the axial direction is the main transport direction. Also two sets wound around the respective pair of wheels body provided an endless rotary body, the distance equal to the running direction of the endless rotary body, and an interval of half the circumference of the endless rotary body, and the longitudinal direction The two connecting members whose both ends in the longitudinal direction are fixed to the endless rotating bodies so as to be in the same direction as the main conveying direction, and the two connecting members along the axial direction of the conveying roller. When any one moves below the transport roller, it protrudes from the bottom of the transport surface, presses the transported material transported in the main transport direction in the sub transport direction intersecting the main transport direction, and the endless When the rotating body moves around the pair of ring bodies, the movement range in which the tip away from the endless rotating body in the sub-transport direction moves is between the inner surfaces of the support frame members on both sides in the sub-transport direction. distance As it will be lower, and the sorting member provided in each of the two coupling members, a predetermined position immediately before the sorting member rotates 180 degrees centered in the axis of the pair of wheels body provided at least two pairs In response to detection of the sorting member detected by the detecting means and the detection means, the endless rotating body in a low-speed moving state at a constant speed is stopped to move the sorting member vertically upward. When a standby signal is received immediately before protruding and a payout signal is received, the endless rotating body is moved at a high speed for a predetermined first period, and then rapidly decelerated from the high speed movement for a second period different from the first period. by the sorting member around the pair of wheel unit at a constant speed change rate be to slow-moving, so that the conveyed object is dispensed in a form of being Tsukitobasa off the sorting member, the endless And a drive control unit that intermittently drives the rotating body half by half.

  Of the sorting members provided on each of the two connecting members, the sorting member on the side protruding from the lower side of the transport surface is connected to the transport member positioned above in the axial direction of the transport roller. When moving in the vicinity of the lower part of the roller, the connecting member located on the upper side rotates around the pair of ring bodies so as to be retracted from the conveying surface while being inclined with respect to the conveying surface, and the sorting is performed. Before the member starts to retract with respect to the transport surface, the tip of the transported material discharged in the sub transport direction is transferred from the transport roller to the downstream conveyor provided on the downstream side. It is preferable to receive a driving force.

Of the sorting members provided on each of the two connecting members, the sorting member on the side protruding from the lower side of the transport surface is connected to the transport member positioned above in the axial direction of the transport roller. When moving in the vicinity of the lower part of the roller, the connecting member positioned above rotates around the pair of ring bodies so as to be retracted from the conveying surface while being inclined with respect to the conveying surface, and the conveying The distance from the position where the sorting member on the side protruding from the lower side of the surface completes evacuation from the conveying surface to the apex of the most upstream rotating body in the downstream conveyor provided on the downstream side from the conveying roller is conveyed. It is preferable that the length is set to be smaller than the minimum length in the sub-transport direction among the various transport objects.

  Moreover, it is preferable that the maximum length from which the front-end | tip of the said sorting member protrudes from a conveyance surface is 1/10 or more of the height of a conveyed product.

Further, the transport roller drive mechanism of the roller conveyor unit is disposed at a predetermined interval from the main pulley on the downstream side in the main transport direction with an actuator, a main pulley that rotates by driving the actuator. and the driven pulley, and an endless belt which is wound around each of the prior SL driving pulley and the driven pulley, a tension pulley to prevent loosening of the endless belt when the endless belt is traveling toward the endless belt to said conveying roller And a pressing pulley that rotates the conveying roller by sliding contact with the endless belt that is driven and pressed.

  According to the present invention, when it is detected that the sorting member is in a predetermined position by the detecting means, the sorting member in the low-speed moving state at a constant speed is stopped and waited, and when a payout signal is received, After moving the sorting member at a high speed for a predetermined first period, changing the speed from the high speed movement for a second period different from the first period and moving the sorting member at a constant speed around the pair of ring bodies at a low speed, The endless rotating body is intermittently driven half a cycle. That is, when the sorting member moves at a high speed, the conveyed product conveyed on the roller conveyor portion in the main conveying direction is discharged at a high speed in the sub conveying direction orthogonal to the main conveying direction. In addition, when the sorting member is suddenly switched from high speed movement to low speed movement at a constant speed, the transport speed of the transported object moving in the sub transport direction is maintained as it is due to the inertia due to the weight of the transported object. Since the moving speed becomes slow, the conveyed product is pushed away from the sorting member. Prior to the moment of being pushed away, the other end facing the end with which the sorting member of the conveyed product abuts is started to be driven by the conveyor roller or the conveyor belt surface of the conveyor located downstream in the sub-conveying direction. . Therefore, when the sorting member is switched to the low speed movement, the delivery of the conveyed product by the sorting member is completed, and the conveyed product is conveyed by the conveyor provided on the downstream side. That is, the conveyed product moving in the same direction and the sorting member are separated due to the difference in their moving speeds, so that the conveyed product can be prevented from being caught by the sorting member.

  In addition, since the drive control of such a sorting member is executed when it is detected that the sorting member is in a predetermined position, compared to the case where the drive control is performed while detecting the sorting member at a plurality of positions, The apparatus configuration can be simplified.

  Further, in the configuration in which the sorting member is moved around, the movement range in which the tip of the sorting member moves in the sub-transport direction when the endless rotating body is moved around the pair of ring bodies is the support frame member on both sides in the sub-transport direction. By making it the distance between the inner surfaces or less, the sorting apparatus itself can be downsized with a simple configuration.

  Further, the sorting member on the side protruding from the lower side of the conveying surface is retracted from the conveying surface while being inclined with respect to the conveying surface. Since the tip in the sub-transport direction of the transported material discharged in the sub-transport direction is transferred from the transport roller to the downstream conveyor provided on the downstream side and receives a driving force, the main transport direction changes from the main transport direction to the sub-transport direction. The driving force is lost, and the downstream conveyor cannot be reached. As a result, the conveyance object is not sorted by the driving of the main conveyance direction conveyance roller, and the problem of conveyance in the main conveyance direction can be prevented. In addition, since the size of the transported object to be transported is set in advance, the sorting member is located downstream from the position where the sorting member is completely retracted from the transport surface so that even a small transported object can be sorted at the minimum. The distance to the apex of the rotating body (the end pulley that wraps around the conveyor roller or conveyor belt) arranged on the most upstream side of the side conveyor is the minimum length in the sub-conveying direction of the various conveyed items to be conveyed With this setting, the driving force from the main transport direction to the sub-transport direction is lost and the downstream conveyor cannot be reached. It is possible to prevent the problem of being transported in the transport direction.

It is a top view which shows the structure of a sorting apparatus. It is CC sectional drawing in FIG. It is a figure when the sorting apparatus is seen from the upstream conveyor side. It is a top view which shows the structure of the discharge part. It is a figure which shows the arrangement | positioning relationship of a payout part. It is a timing chart in the case of moving a sorting piece in order of high-speed movement, 1st low-speed movement, and 2nd low-speed movement. It is a timing chart in the case of moving a sorting piece in order of high-speed movement and low-speed movement.

  As shown in FIGS. 1 to 4, the sorting device 10 conveys the conveyed product 50 conveyed from the upstream conveyor 11 toward the downstream conveyor 12, or conveys it toward the downstream conveyor 13. , An apparatus for sorting the conveyed product 50. In addition, as for the conveyed product 50, the thing of the magnitude | size of the range set beforehand is conveyed.

  The sorting apparatus 10 includes a roller conveyor unit 15 and a dispensing unit 16. The roller conveyor unit 15 conveys the conveyed product 50 conveyed from the upstream conveyor 11 toward the downstream conveyor 12 by conveying it in the direction A shown in FIG. 1 (that is, downstream in the main conveyance direction). On the other hand, the dispensing unit 16 dispenses the conveyed product 50 conveyed in the direction A by the roller conveyor unit 15 toward the downstream conveyor 13 disposed on the side of the roller conveyor unit 15. In addition, the B direction shown in FIG. 1 is a paying-out direction of the conveyed product 50 by the paying part 16 mentioned later, is orthogonal to the A direction which is the main conveying direction by the roller conveyor part 15, and is the actual paying-out direction of the conveyed object. May differ in angle. In addition, although mentioned later for details, the roller conveyor part 15 is arrange | positioned at the upper part of the discharge part 16. FIG.

  The roller conveyor unit 15 includes a plurality of transport rollers 21, a drive mechanism 22, and a holding frame 23. A plurality of the transport rollers 21 are arranged in the A direction so that the rotation axis direction thereof is a direction orthogonal to the A direction and with a predetermined interval from the adjacent transport rollers 21. The predetermined interval is a gap wider than the width of sorting pieces 47 and 48 described later. Moreover, these conveyance rollers 21 are each arrange | positioned so that the height of the center may become the same height. By arranging the plurality of conveyance rollers 21 in this way, the plane 24 including the apex of the conveyance rollers 21 becomes a conveyance surface (hereinafter, conveyance surface 24) for conveying the conveyance object 50.

  The drive mechanism 22 is provided for rotating the transport rollers 21. This drive mechanism 22 is provided in the axial direction of the transport roller 21 and at the end opposite to the one end from which the transported object 50 is paid out by the payout unit 16. The drive mechanism 22 includes a main driving pulley 25, a driven pulley 26, a pressing pulley 27, a tension pulley 28, an endless belt 29, a belt cover 29 a, and a driving motor 30.

  The main pulley 25 and the driven pulley 26 are respectively disposed above the transport roller 21. An endless belt 29 is wound around the main driving pulley 25 and the driven pulley 26.

  The pressure pulley 27 rotates the transport roller 21 by pressing the traveling endless belt 29 against the outer peripheral surface of two adjacent transport rollers 21. The pressing pulley 27 is disposed so that its center passes through the midpoint of a straight line connecting the centers of two adjacent transport rollers 21 and is positioned on a straight line orthogonal to the straight line. By arranging the pressing pulley 27 in this way, the pressing force when the traveling endless belt 29 is pressed against the two adjacent conveying rollers 21 can be made uniform, and the endless belt 29 rotates by being in sliding contact. The rotation speeds of the two transport rollers 21 can be set to the same speed. The tension pulley 28 prevents the endless belt 29 from slackening when the endless belt 29 travels.

  For example, a belt having a hexagonal cross section (hereinafter referred to as a hexagonal belt) is used as the endless belt 29, and a belt cover 29a is covered on the top. FIG. 1 shows a state in which the belt cover 29a is removed. The drive motor has a main pulley 25 assembled to its drive shaft. A known geared motor is used as the drive motor 30. The drive motor 30 may be operated in the same manner when the upstream conveyor 11 and the downstream conveyor 12 in the main transport direction are operated.

  The holding frame 23 is composed of a rectangular frame provided with support frame members 23a on both sides in the main transport direction. A plurality of transport rollers 21, a drive mechanism 22, and the like are attached to the holding frame 23. A rotatable shaft of the transport roller 21 is supported on the support frame members 23a on both sides. The holding frame 23 is fixed to the upper part of the holding frame 43 constituting the payout portion 16.

  The payout unit 16 includes sprockets 35 a to 35 d, rotary shafts 36 and 37, chain belts 38 and 39, connecting members 40 and 41, a drive motor 42, and a holding frame 43. As the sprockets 35a to 35d, those having the same number of teeth are used. Among these sprockets 35a to 35d, the sprockets 35a and 35c are attached to the rotary shaft 36 with a predetermined interval. Similarly, the sprockets 35b and 35d are attached to the rotary shaft 37 at a predetermined interval.

  The rotary shaft 36 to which the sprockets 35a and 35c are fixed and the rotary shaft 37 to which the sprockets 35b and 35d are fixed are such that these axial directions are in the A direction, and the axis centers of the respective rotary shafts are the same plane. It is pivotally supported by the holding frame 43 at a predetermined interval so as to be positioned above. The rotary shafts 36 and 37 are pivotally supported by the holding frame 43 so that the sprocket 35a and the sprocket 35b are in the same position in the A direction, and so that the sprocket 35c and the sprocket 35d are in the same position. .

  Of the rotary shafts 36 and 37 described above, one end of the rotary shaft 37 penetrates the holding frame 43 and is fitted into a follow shaft (not shown) provided in the drive motor 42. As a result, the sprockets 35a and 35c fixed to the rotating shaft 36 become the main driving side sprocket (hereinafter referred to as the main driving side sprocket), and the sprockets 35b and 35d fixed to the rotating shaft 37 become the driven side sprocket (hereinafter referred to as the driven side sprocket). )

  The chain belt 38 is wound around the driving sprocket 35a and the driven sprocket 35b, and the chain belt 39 is wound around the driving sprocket 35c and the driven sprocket 35d. That is, the chain belts 38 and 39 are rotated by rotating the main drive side sprockets 35a and 35c. Reference numerals 45 and 46 are guide members for preventing the chain belts 38 and 39 from blurring. By arranging these guide members 45 and 46, the chain belts 38 and 39 can be moved in the horizontal direction or the vertical direction. Prevent blurring. The guide members 45 and 46 are disposed below the chain belts 38 and 39 in the linear portions of the chain belts 38 and 39 in the vicinity of the conveying roller 21.

  The connecting members 40 and 41 are connected to the respective chain belts 38 and 39, for example, with an interval corresponding to a half circumference of the chain belts 38 and 39. In this connection, the connecting members 40 and 41 are fixed to the chain belts 38 and 39 so that the longitudinal direction of the connecting members 40 and 41 is parallel to the axial direction (A direction) of the rotating shaft 36 or the rotating shaft 37, respectively. The The connecting members 40 and 41 are fixed to the chain belts 38 and 39 via brackets for connecting to the chain belts 38 and 39.

  The connecting members 40 and 41 are provided with a plurality of sorting pieces on the upper surfaces thereof. In the following description, the sorting piece provided on the connecting member 40 is denoted by reference numeral 47, and the sorting piece provided on the connecting member 41 is denoted by reference numeral 48. Since the configuration of the connecting members 40 and 41 and the configuration of the sorting pieces are the same, only the connecting member 40 will be described below, and the description of the connecting member 41 will be omitted.

  The sorting pieces 47 provided on the connecting member 40 are provided at predetermined intervals along the longitudinal direction of the connecting member 40. The predetermined interval is the same interval as the gap formed between the two adjacent conveyance rollers 21. These sorting pieces 47 are L-shaped in cross-section perpendicular to the direction protruding from the connecting member 40. In this cross section, one side in the short side direction is a portion that comes into contact with the conveyed product 50 that is conveyed in the A direction. The width of one side of the sorting piece 47 is set to be shorter than the gap between the two adjacent conveyance rollers 21.

  As described above, since the chain belts 38 and 39 each move around, the sorting pieces 47 and 48 provided on the connecting members 40 and 41 also move around together with the chain belts 38 and 39. The movement trajectories (regions inside the two-dot chain line indicated by the symbol W in FIG. 5) during the circular movement of the sorting pieces 47 and 48 are the same as the linear portion where the chain belts 38 and 39 move along the conveying surface 24 and the main movement. It consists of a curved portion rotating around the center of the side sprockets 35a, 35c and a curved portion rotating around the center of the driven sprocket 35b, 35d.

  In the straight line portion constituting the movement locus, the sorting pieces 47 and 48 move while maintaining the state in which the longitudinal direction thereof is orthogonal to the conveying surface 24. In addition, among these linear portions, in the linear portion that is in the vicinity of the conveying roller 21 (that is, the upper linear portion), the leading end portions of the sorting pieces 47 and 48 protrude from the conveying surface 24. Moreover, in the curved part which comprises a movement locus | trajectory, as for the sorting pieces 47 and 48, the longitudinal direction becomes the normal line direction of the center of the driving side sprockets 35a and 35c, or the driven side sprockets 35b and 35d, respectively.

  For this reason, when the sorting pieces 47 and 48 rotate around the centers of the main drive side sprockets 35a and 35c, the sorting pieces 47 and 48 have their tips inclined toward the moving direction (direction B shown in FIG. 1). Move while. The angle of the inclination increases as the sorting pieces 47 and 48 move along the curved portion. Therefore, the transported object 50 is sandwiched between the sorting pieces 47 and 48 and the transport surface 24, that is, the transported object 50 is caught. To do. In order to prevent biting of the conveyed product 50, among the movement trajectories of the sorting pieces 47 and 48 described above, the linear portion described above is arranged on the downstream conveyor 13 side with respect to the conveying roller 21, that is, in the B direction. It is ideal to extend the range of the movement locus in FIG. 4 to the outside of one end of the transport roller 21 provided in the roller conveyor unit 15 or to the outside of the holding frame 23.

  However, when the range of the movement trajectory is extended to the outside of the conveying roller 21 or the outside of the holding frame 23, the shape of the downstream conveyor 13 in addition to the shape of the roller conveyor portion 15 and the payout portion 16 is It becomes complicated. This is because the sorting pieces 47 and 48 are at least a part of a curved portion that rotates the main-side sprocket or the driven-side sprocket, and protrudes in a form that breaks through the support frame member 23a. This is because, in order to receive the conveyed product while applying a driving force, an upstream conveying surface in contact with the comb-shaped sorting device 10 is required. For this reason, when the range of the movement trajectory is extended to the outside of the conveying roller 21 or the outside of the holding frame 23, the sorting pieces 47 and 48 are moved in a circular motion in this embodiment in order to prevent the apparatus from becoming large and complicated. Each member is arranged so that the movement trajectory of the hour, particularly the trajectory of the tip of the sorting pieces 47, 48, fits inside the holding frame 23.

  FIG. 5 is a diagram showing the arrangement of the parts constituting the payout unit 16. In FIG. 5, the distance (maximum protrusion amount) from the conveying surface 24 to the tip of the sorting piece 47 when the sorting piece 47 is orthogonal to the carrying surface is L1, and the distance of the sorting piece 47 from the center of the driving sprockets 35a and 35c is shown. The distance to the tip is L2, the distance from the center of the main drive side sprockets 35a, 35c to the inner wall surface of the support frame member 23a constituting the holding frame 23 of the roller conveyor section 15, L3, and the sorting piece 47 is retracted from the conveying surface 24. The distance from the tip of the sorting piece 47 at the position to the center of the transport roller 55 of the downstream conveyor 13 is L4, and the distance from the center of the main drive side sprockets 35a, 35c to the transport surface 24 is L5 (see FIG. 5).

  As described above, the size of the transported object 50 that can be transported by the sorting apparatus 10 is set in advance. The distance L1, which is the maximum protrusion amount of the sorting pieces 47, is set to be, for example, 10% of the minimum height of the conveyed product 50, that is, L1 = (maximum height of the conveyed product 50) × 0.1. Is done. Based on the setting of L1, the distance L2 and the distance L5 are determined. The distance L1 is a difference between the distance L2 and the distance L5, that is, L1 = L2−L5.

  Next, a distance L4 from the tip of the sorting piece 47 when the sorting piece 47 is retracted from the transport surface 24 to the center (vertex) of the transport roller 55 of the downstream conveyor 13 will be considered. The transport surface of the downstream conveyor 13 and the transport surface 24 of the roller conveyor unit 15 are set to the same height. As described above, the sorting piece 47 is inclined from the state of being horizontally moved in the process of transporting the transported object 50 and is finally retracted below the transport surface 24. When the tip of the inclined sorting piece 47 is retracted from the transport surface 24, the transported object 50 is not affected by the pressing by the sorting piece 47. In order to move the conveyed product 50 in the B direction in this state, it is necessary to apply a conveying force in the B direction to the conveyed product 50. That is, it is a condition that the tip of the conveyed product 50 rides on the most upstream rotating body of the downstream conveyor 13 before the inclined sorting pieces 47 are retracted from the conveying surface 24. That is, the distance L4 is set so that L4 <(minimum width of the conveyed product 50 to be conveyed).

  Finally, the distance from the center of the main drive side sprockets 35a, 35c to the inner surface of the support frame member 23a constituting the holding frame 23 of the roller conveyor unit 15 is considered for L3. As described above, the movement trajectory of the sorting piece 47 that orbits is in the range indicated by the symbol W. It is preferable that the boundary portion of the movement locus is on the inner side of the inner wall surface of the support frame member 23a constituting the holding frame 23 of the roller conveyor unit 15 in the B direction. That is, it is preferable that the distance L3 satisfies the distance L3> the distance L2. Note that the distance L3> the distance L2 is not always satisfied depending on the shape of the support frame member 23a (for example, the vicinity of the conveying surface 24 projects to the upstream side but the lower side projects to the downstream side) and the shape of the dispensing unit 16. In some cases, the distance L3 is preferably a value that approximates the distance L2. Based on these values, the arrangement of each part of the dispensing unit 16, the arrangement of the roller conveyor unit 15 and the downstream conveyor 13 are determined.

  For example, a geared motor is used as the drive motor 42. The drive motor 42 is an integrated drive unit that converts the rotation direction of the rotation shaft of the motor, and the drive unit is provided with a follow shaft that fits the rotation shaft 36 in a direction orthogonal to the rotation shaft of the motor. ing. Further, the drive motor 42 is fixed with a slight play around the follow shaft by a torque arm 42a that is hooked to the lower surface of the holding frame 43 with a pin. By using such a fixing method, the driving motor 42 can be fixed to the holding frame 43 so that the motor itself does not rotate. As a result, it is possible to prevent the shake of the rotating shaft 36 from being transmitted directly to the follow shaft of the drive motor 42 and being damaged, which occurs when the torque arm 42a is not used and the bolt is firmly fixed to the holding frame 43 without play.

  The holding frame 43 has a rectangular shape composed of a plurality of members. The holding frame 43 supports the rotating shafts 36 and 37 described above and holds the drive motor 42. It should be noted that the roller conveyor section is disposed above the holding frame 43 so that the transport direction (A direction) of the transported object 50 in the roller conveyor section 15 is orthogonal to the moving direction (B direction) of the sorting piece 47 described above. The support frame member 23a constituting the 15 holding frames 23 is fixed.

  The position detection sensor 51 detects the sorting piece 47 of the connecting member 40 or the sorting piece 48 of the connecting member 41 that has moved to a predetermined position, and outputs the detection signal to the drive control device 53 described later. Although the position where the position detection sensor 51 is arranged is not shown, for example, as shown in FIG. 3, immediately before rotating 180 degrees around the center of the main sprockets 35a, 35c, that is, vertical The position which can detect the sorting piece 47 or the sorting piece 48 just before the state which protrudes below is mentioned. Alternatively, the sorting piece 47 or the sorting piece immediately before the sorting piece 47 or the sorting piece 48 rotates 180 degrees from the lower side with the center of the opposite driven side sprockets 35b and 35d as an axis, that is, just before the vertically protruding state. It may be a position where 48 can be detected. Hereinafter, a state in which the sorting piece 47 is detected will be described as a first state, and a state in which the sorting piece 48 is detected will be described as a second state. In addition, between the 1st state and the 2nd state, the chain belts 38 and 39 each circulate for half a circumference.

  The conveyance detection sensor 52 detects the conveyance object 50 conveyed by the upstream conveyor 11. When the conveyance detection sensor 52 detects the conveyance object 50, the conveyance detection sensor 52 outputs a detection signal to the drive control device 53. When the transported object 50 is no longer detected by the transport detection sensor 52, the output of the output detection signal is stopped.

  The drive control device 53 controls at least the operation of the drive motor 42 that constitutes the payout unit 16. Information (hereinafter, sorting information) indicating whether the conveyed product is to be conveyed to either the downstream conveyor 12 or the downstream conveyor 13 is input to the drive control device 53. The drive control device 53 operates the drive motor 42 based on the sorting information and the detection signals from the position detection sensor 51 and the conveyance detection sensor 52 described above.

  Further, the drive control device 53 continues to operate the drive motor 30. In response to the operation of the drive motor 30, the main pulley 25 rotates, for example, clockwise, and the endless belt 29 travels in the direction D shown in FIG. Since the endless belt 29 is pressed toward the conveying roller 21 by the pressing roller 27, when the endless belt 29 travels in the D direction, the conveying roller 21 is rotated counterclockwise by the frictional force thereof. . Thereby, when the conveyed product 50 comes on the conveyance surface 24 of the roller conveyor part 15, it is conveyed toward A direction. Therefore, the drive control device 53 operates the drive motor 30 so that the conveyance speed of the conveyed product 50 in the roller conveyor unit 15 becomes a constant speed.

  In addition, the drive control device 53 once drives the drive motor 42 to cause the position detection sensor 51 to detect one of the sorting pieces 47 and 48 before stopping the conveyed product 50 on the upstream conveyor 11 in the A direction. .

  Thereafter, when the upstream conveyor 11 is operated and then a detection signal from the conveyance detection sensor 52 is input, the drive control device 53 determines whether or not the conveyance object 50 needs to be classified based on the above-described sorting information. Identify. When it is determined that the conveyed product 50 needs to be sorted, the drive control device 53 drives the drive motor 42 using sequence control. The sequence control when driving the drive motor 42 is designed to be controlled based on time so that the partition pieces 47 and 48 satisfy the following moving speed. Hereinafter, the case where the time required for the chain belts 38 and 39 to move half a round is 1.2 seconds will be described.

  As shown in FIG. 6, the sorting pieces 47 and 48 are moved from the stop state to the maximum speed of 88 m / min until 0.4 seconds elapse after the sorting pieces 47 and 48 start moving. Accelerated to be min. When 0.4 seconds elapse after the sorting pieces 47 and 48 start moving, the moving speed of the sorting pieces 47 and 48 is maintained at a constant speed, that is, 88 m / min. Hereinafter, the case where the moving speed of the sorting pieces 47 and 48 moves at the maximum speed is referred to as high-speed movement.

  When 0.45 seconds elapse after the sorting pieces 47 and 48 start to move, the moving speed is rapidly decelerated. When 0.15 seconds elapse after the moving speed of the sorting pieces 47 and 48 is suddenly decelerated, that is, when 0.6 seconds elapse after the sorting pieces 47 and 48 start to move, the sorting pieces 47 and 48 are decelerated. Stopped. The moving speed of the sorting pieces 47 and 48 when the deceleration is stopped is, for example, 37 m / min. The moving speed is maintained at a constant speed for 0.2 seconds after the deceleration of the moving speed of the sorting pieces 47 and 48 is stopped. The case of moving at this moving speed is referred to as a first low speed movement.

  When 0.8 seconds elapse after the sorting pieces 47 and 48 start moving, the moving speed of the sorting pieces 47 and 48 is further reduced. When the moving speed of the sorting pieces 47 and 48 has been decelerated, 0.05 second has elapsed, that is, when 0.85 seconds have passed since the sorting pieces 47 and 48 started to move, the deceleration of the sorting pieces 47 and 48 has stopped. Is done. In addition, the moving speed of the sorting pieces 47 and 48 when the deceleration is stopped is, for example, 15 m / min. The moving speed is maintained at a constant speed for 0.1 seconds after the deceleration of the moving speed of the sorting pieces 47 and 48 is stopped. The case of moving at the moving speed at this time is referred to as second low-speed movement.

  When 0.95 seconds elapse after the sorting piece starts to move, either of the sorting pieces 47 and 48 crosses the position detection sensor 51, stops, and the timer is reset. For example, the movement of the sorting piece is stopped 0.01 seconds after the position detection sensor is detected. In addition, after the time when the chain belts 38 and 39 move around half a round is 1.2 seconds again, the sorting pieces 47 and 48 are stopped and the waiting time is 0.24 seconds after stopping. Become. This waiting time is until the output signal for the sorting specified by the input from the next conveyance detection sensor 52 to the drive control device 53 is issued.

  When the sorting pieces 47 are moved by such sequence control, the transport rollers 21 of the roller conveyor section 15 are rotated to transport the transported object 50 in the A direction. The sorting piece 47 moving in the B direction with the moving speed accelerated is brought into contact with the conveyed product 50 conveyed in the A direction during the acceleration, and then presses the conveyed product 50 in the B direction. As a result, not only the propulsive force in the A direction but also the propulsive force in the B direction acts on the conveyed product 50, so the conveyed product 50 on the conveying surface 24 moves in the E direction that combines these propulsive forces. Note that one end of the conveyed product 50 pressed by the sorting piece 47 rides on the downstream conveyor 13 during acceleration of the moving speed or when the moving speed is high.

  Here, the conveyance speed of the conveyed product 50 in the downstream conveyor 13 is the same as the movement speed when the sorting piece 47 is moved at a high speed. When one end portion of the conveyed product 50 rides on the downstream conveyor 13, the conveyed product 50 is subjected to the frictional force in the B direction on the downstream conveyor 13 and the pressing force in the B direction of the sorting piece 47 on the conveyed product. The above-described switching of the sorting piece 47 from the high speed movement to the first low speed movement is performed in a period in which this state is maintained. When the sorting piece 47 is switched to the low speed movement, the moving speed of the sorting piece 47 during the low speed movement is slower than the carrying speed of the transported object 50. 50 receives the driving force in the downstream conveyor 13 and is conveyed in the B direction. On the other hand, the sorting pieces 47 are decelerated in the order of the first low-speed movement and the second low-speed movement, and the sorting pieces 47 start to move and pass / stop the position detection sensor 51 after a predetermined time has passed.

  As a result, the chain belts 38 and 39 move around and switch from the first state to the second state. In this way, each time the conveyed product 50 to be sorted is detected, the sorting pieces 47 and 48 are moved half a round, and the conveyed product 50 conveyed by the roller conveyor unit 15 is sorted during the circular movement. As described above, the movement of the sorting pieces 47 and 48 by half rotation is driven and controlled by a predetermined sequence control based on the fact that the sorting pieces 47 and 48 are detected by the position detection sensor 51. Alternatively, it is not necessary to detect the sorting piece 48 at another position where the sorting piece 48 is moving at high speed, for example.

  In the present embodiment, a geared motor is taken as an example of the drive motor 42 used in the dispensing unit 16, but the present invention is not limited to this, and a servo motor, for example, can also be used.

  In the present embodiment, as an example of sequence control used when driving the drive motor 42, the case where the partition pieces 47 and 48 are moved in the order of high speed movement, first low speed movement, and second low speed movement is taken as an example. However, the sequence control used when driving the drive motor 42 is not limited to this.

  Hereinafter, sequence control in the case of moving the partition pieces 47 and 48 while switching in the order of high speed movement and low speed movement will be described. As shown in FIG. 7, the moving speed of the sorting piece 47 is maintained at, for example, 73 m / min until 0.43 seconds elapse after the sorting pieces 47 and 48 start moving. And when 0.43 second passes, the moving speed of the sorting piece 47 is decelerated and the moving speed is maintained at 36 m / min. When 1.2 seconds have passed, the sorting piece 47 is stopped. By controlling the moving speed of the partition pieces 47 and 48 in this way, the same effects as in the present embodiment are obtained.

  In the present embodiment, the position detection sensor 51 detects the sorting piece 47 or the sorting piece 48 immediately before rotating 180 degrees around the center of the main drive side sprockets 35a, 35c, but is not limited thereto. Instead, for example, either the sorting piece 47 or the sorting piece 48 immediately after retreating from the conveying surface 24 may be detected by the position detection sensor 51, or the retreating from the conveying surface 24 and the main sprockets 35a, 35c It is also possible to detect either the sorting piece 47 or the sorting piece 48 rotated by a predetermined angle such as 90 ° around the center by the position detection sensor 51.

  In this case, if the size of the conveyed product 50 conveyed by the roller conveyor unit 15 is known in advance, the time from when the sorting piece 47 and the sorting piece 48 are moved to the time when they are brought into contact with the conveyed product 50, The moving speed of the sorting pieces can be calculated. Further, the sorting piece 47 or the sorting piece 48 stopped during the rotation around the center of the main sprocket 35a, 35c, or the sorting piece stopped during the rotation about the center of the driven sprocket 35b, 35d. 47, or when the sorting piece 48 is detected, the sorting piece 47 is in a state in which the tip of the 47 or sorting piece 48 is retracted from the carrying surface 24, so that there is no protrusion on the carrying surface, and the sorting piece is maintained during maintenance. It is possible to prevent the occurrence of injury due to pinching by the conveying surface.

  DESCRIPTION OF SYMBOLS 10 ... Sorting apparatus, 11 ... Upstream conveyor, 12, 13 ... Downstream conveyor, 15 ... Roller conveyor part, 16 ... Discharge part, 21 ... Conveyance roller, 22 ... Drive mechanism, 23, 43 ... Holding frame, 25 ... Main drive Pulley, 26 ... driven pulley, 27 ... pressure pulley, 28 ... tension pulley, 30, 42 ... drive motor, 35a, 35c ... main drive side sprocket, 35b, 35d ... driven side sprocket, 36, 37 ... rotating shaft, 38, 39 ... Chain belt, 40, 41 ... Connecting member, 47, 48 ... Sorting piece, 50 ... Conveyed object, 51 ... Position detection sensor, 52 ... Conveyance detection sensor, 53 ... Drive control device

Claims (6)

A plurality of conveying rollers having an axial direction perpendicular to the main conveying direction of the conveyed object as an axial direction are arranged along the main conveying direction, and at least one of the plurality of arranged conveying rollers is driven and the plurality of arranged rollers are arranged. A roller conveyor unit that conveys the conveyed product, with the surface including the apex of the conveying roller as a conveying surface;
A payout unit that is provided below the roller conveyor unit and that delivers a conveyed product conveyed in the main conveyance direction by the roller conveyor unit in a sub conveyance direction intersecting the main conveyance direction; and
The payout unit is
A pair of rings provided in at least two sets so that a predetermined interval is provided in the main transport direction and the axial direction is the main transport direction;
An endless rotating body wound around each of the pair of ring bodies provided in at least two sets;
The both ends of the longitudinal direction are the endless so that the longitudinal direction is the same as the main transport direction, with an interval equal to the traveling direction of the endless rotating body and an interval of a half circumference of the endless rotating body. Two connecting members fixed to each of the rotating bodies;
Provided in each of the two connecting members, and when one of the two connecting members moves in the vicinity of the lower part of the conveying roller along the axial direction of the conveying roller, it protrudes from below the conveying surface, and A sorting member that presses a conveyed product conveyed in the conveying direction in a sub conveying direction intersecting the main conveying direction;
Detecting means for detecting that the sorting member has reached a predetermined position immediately before rotating 180 degrees around the center of the pair of at least two pairs of ring bodies ;
In response to the detection of the sorting member by the detection means, the endless rotating body in a state of low speed movement at a constant speed is stopped to make the sorting member stand by immediately before projecting vertically upward and receive a dispensing signal. When the endless rotating body is moved at a high speed for a predetermined first period, the speed is rapidly decelerated from the high speed movement for a second period different from the first period and the speed is changed at a constant speed. Watai the sorting member around it to slow moving, and the like conveying object is dispensed in a form of being Tsukitobasa off the sorting member, the drive control section for intermittently driving by half the endless rotary body,
Sorting device characterized by comprising. A plurality of transport rollers arranged along the main transport direction with a direction orthogonal to the main transport direction of the transported object as an axial direction, and support frame members on both sides on which the plurality of transport rollers are rotatably supported A roller conveyor unit that conveys the conveyed object, with at least one of the plurality of arranged conveying rollers being driven, and a surface including a vertex of the plural arranged conveying rollers as a conveying surface;
A payout unit that is provided below the roller conveyor unit and that delivers a conveyed product conveyed in the main conveyance direction by the roller conveyor unit in a sub conveyance direction intersecting the main conveyance direction; and
The payout unit is
A pair of rings provided in at least two sets so that a predetermined interval is provided in the main transport direction and the axial direction is the main transport direction;
An endless rotating body wound around each of the pair of ring bodies provided in at least two sets;
The both ends of the longitudinal direction are the endless so that the longitudinal direction is the same as the main transport direction, with an interval equal to the traveling direction of the endless rotating body and an interval of a half circumference of the endless rotating body. Two connecting members fixed to each of the rotating bodies;
When one of the two connecting members moves in the vicinity of the lower part of the transport roller along the axial direction of the transport roller, the projecting object projects from the lower surface of the transport surface and transports the main transported object in the main transport direction. There is a movement range in which the tip away from the endless rotating body in the sub-conveying direction moves when pressing in the sub-transporting direction intersecting the transporting direction and rotating around the pair of ring bodies of the endless rotating body. A sorting member provided on each of the two connecting members so as to be equal to or less than the distance between the inner surfaces of the support frame members on both sides in the sub-transport direction;
Detecting means for detecting that the sorting member has reached a predetermined position immediately before rotating 180 degrees around the center of the pair of at least two pairs of ring bodies ;
In response to the detection of the sorting member by the detection means, the endless rotating body in a state of low speed movement at a constant speed is stopped to make the sorting member stand by immediately before projecting vertically upward and receive a dispensing signal. When the endless rotating body is moved at a high speed for a predetermined first period, the speed is rapidly decelerated from the high speed movement for a second period different from the first period and the speed is changed at a constant speed. Watai the sorting member around it to slow moving, and the like conveying object is dispensed in a form of being Tsukitobasa off the sorting member, the drive control section for intermittently driving by half the endless rotary body,
Sorting device characterized by comprising. The sorting apparatus according to claim 2,
Of the sorting members provided on each of the two connecting members, the sorting member protruding from the lower side of the transport surface has a connecting member located above the transport roller in the axial direction. When moving in the vicinity of the lower part, the connecting member located on the upper side rotates around the pair of ring bodies so as to retract from the conveying surface while being inclined with respect to the conveying surface,
Before the sorting member starts to retract with respect to the transport surface, the leading end in the sub-transport direction of the transported material discharged in the sub-transport direction is moved to a downstream conveyor provided downstream from the transport roller. A sorting device characterized in that it is delivered and receives driving force. The sorting apparatus according to claim 2,
Of the sorting members provided on each of the two connecting members, the sorting member protruding from the lower side of the transport surface has a connecting member located above the transport roller in the axial direction. When moving in the vicinity of the lower part, the connecting member located on the upper side rotates around the pair of ring bodies so as to retract from the conveying surface while being inclined with respect to the conveying surface,
The distance from the position where the sorting member on the side protruding from the lower side of the conveying surface completes retreating from the conveying surface to the apex of the most upstream rotating body in the downstream conveyor provided on the downstream side from the conveying roller , The sorting apparatus is set to be smaller than the minimum length in the sub-transport direction among the various transported objects to be transported.
The sorting apparatus according to any one of claims 1 to 4,
The sorting apparatus is characterized in that the maximum length at which the tip of the sorting member protrudes from the transport surface is 1/10 or more of the height of the transported object. The sorting apparatus according to any one of claims 1 to 5,
The drive mechanism of the transport roller of the roller conveyor unit is:
An actuator,
A main pulley that rotates by driving the actuator;
A driven pulley disposed at a predetermined distance from the main pulley on the downstream side in the main transport direction;
And an endless belt which is wound around each of the prior SL main movement pulley and the driven pulley,
A tension pulley that prevents looseness of the endless belt when the endless belt travels;
A pressing pulley that presses the endless belt toward the conveying roller and rotates the conveying roller by sliding contact with the traveling endless belt;
A sorting apparatus characterized by comprising:

Images