JP4828801B2 - Method of changing the direction of conveyed items on a conveyor - Google Patents

Description

The present invention relates to conveying material sent to the conveying path of the conveyor, the diverting how the transported material in conveyor so as to convey the diverted branch conveyor which is provided on the side of the conveyor.

  At distribution centers and distribution centers, in order to sort and store corrugated items such as corrugated cardboard, the direction of the conveyed items sent by the roller conveyor or belt conveyor is changed to the side branch conveyor. Then, a direction changing device that conveys is used.

  As a conventional direction changing device, for example, as described in Patent Document 1, a plurality of conveyor belts are arranged in parallel in the width direction of the conveyance path at predetermined intervals, and the width of the conveyance path is formed at a branch portion in the conveyance path. There are some in which a plurality of inclined rollers arranged in the direction at regular intervals are provided in a plurality of rows in the conveyance direction of the conveyed product so that they can appear on the conveyance surface between adjacent conveyor belts.

JP 2000-264413 A

  In the conventional direction change device of the conveyed product described in Patent Document 1, the conveyance direction of the conveyed item is selectively switched by raising and lowering a plurality of inclined rollers aligned in the conveyance direction all at once. Therefore, when branching the conveyed product to the branching conveyor, the lifting means is operated to raise all the inclined rollers until the conveyed item that has been traveling straight ahead deviates from the lifting area of the frontmost inclined roller. It has a problem that it cannot be made.

  Further, even when the subsequent conveyed product is changed to a straight line, all the inclined rollers cannot be lowered until the preceding conveyed product is completely transferred onto the branching conveyor. For this reason, it is necessary to wait for the subsequent conveyed product to wait until the conveyed product passes over all the inclined rollers of the branching portion, which causes a problem that the conveyance efficiency and sorting efficiency of the conveyed product decrease. It was.

The present invention has been made to solve the above problems, to shorten the waiting time of the conveyed object, redirecting how the transferred object in the conveyor to be able to improve the transport efficiency and sorting efficiency The purpose is to provide.

In order to achieve the above object, the direction change method of the conveyed product in the conveyor according to claim 1 of the present invention is such that the conveyed product conveyed on the straight conveying path of the main conveyor is separated by a predetermined interval in the conveying direction and the width direction. A method of changing the direction of a conveyed product that changes direction and transfers to a branching conveyor on a side of the main conveyor by causing a plurality of direction changing rollers arranged in rows to appear on the conveying surface,
In all state that lowers the deflecting rollers, in a state in which the conveyed object is conveyed to the downstream side of the linear transport path preceding the time of turning the subsequent conveyance thereof to the branching conveyor, prior to transport When the rear end of the article passes over the direction change roller of the most upstream direction change unit, and the front end portion of the subsequent conveyance object reaches above the direction change roller of the most upstream direction change unit, The conversion roller of the direction change unit on the most upstream side is raised, and then the change roller of the direction change unit is raised in order in accordance with the preceding conveyed product passing through the direction change unit aligned in the conveyance direction. It is characterized by changing the direction of the conveyed product to a branching conveyor .
According to this feature, without waiting for the preceding conveyed product to finish passing on all the direction change rollers, the subsequent conveyed item can be moved to the uppermost direction changing roller to move straight or change direction. Therefore, it is possible to reduce the interval between the front and rear transported items and continuously transport them, thereby improving transport efficiency and sorting efficiency. Further, the front end portion of the subsequent transported object is transported on the upper surface thereof without contacting the most upstream direction change roller.

The direction change method of the conveyed product in the conveyor of Claim 2 of this invention is a direction change method of the conveyed product in the conveyor of Claim 1,
In case you are turning the conveyed object is raised each deflecting rollers, the deflecting rollers of the most upstream side temporarily lowered immediately after passage of the conveyed object, front end the redirection of subsequent conveyance thereof It is characterized by being raised again when it reaches the upper side of the roller.
According to this feature, the subsequent conveyance thereof, prior immediately later turning of the conveyance object that change direction, not only can be transferred to the branch conveyors, the front end of the succeeding conveying object is Without being in contact with the direction change roller on the most upstream side, it rides on the upper surface and is conveyed.

The direction change method of the conveyed product in the conveyor of Claim 3 of this invention is a direction change method of the conveyed product in the conveyor of Claim 1 or 2 ,
The distance between the conveyed object and the following conveyed the preceding, is characterized in that the major dimension of the deflecting rollers 1 pieces of arranged in the transport direction, or even more.
According to this feature, it is possible to minimize the distance between the front and rear transport objects, and it does not interfere with the transport object when the direction changing roller is raised or lowered, so that the transport efficiency and sorting efficiency of the transport object are further increased. improves.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view of a conveyor to which the present invention is applied, and FIG. 2 is an arrow view (a branching conveyor is not shown) as seen from the line II-II in FIG. A branching conveyor 2 that is connected to the section diagonally forward (hereinafter referred to as the conveyance direction of the conveyed product), and a delivery conveyor 3 that is connected to the rear end that is upstream of the main conveyor 1. The direction change device 4 of the conveyed product of the present invention is provided below the branch portion of the main conveyor 1.

  The main conveyor 1 has a large number of support rollers 7 that rotate around a left-right axis on the opposing surfaces of a pair of left and right side frames 6, 6 supported on the floor surface by a plurality of left and right support legs 5, 5. A plurality of endless conveyor belts 8 that are pivotally supported at regular intervals in the front-rear direction and wound at predetermined intervals in the width direction of the conveying path so as to be in sliding contact with the upper surface of each support roller 7 It is configured.

  Each conveyor belt 8 is driven by a geared motor or the like to drive a pulley or sprocket (both not shown) fixed to a roller shaft around which one of the front and rear ends is wound, so that the upper half-circumference portion is It is designed to run forward at the same speed. Each support roller 7 is driven to rotate by a conveyor belt 8.

  The branching conveyor 2 has a pair of side frames 9 and 9 facing diagonally forward and a linear frame 10 that joins the start ends to a plurality of rollers 11 that rotate about an axis orthogonal to the branching direction. At intervals, the upper surfaces of the conveying paths and the upper surface of the conveying path of the main conveyor 1 are pivotally supported so as to align with each other.

  The delivery conveyor 3 is configured by winding a wide conveyor belt 13 between a left and right side frames 12 and 12 around a driving roller and a driven roller (not shown), and a conveyed product W sent onto the delivery conveyor 3 is It is sequentially sent to the main conveyor 1 at regular intervals.

  A photoelectric sensor 14 composed of a light emitting element 14 a and a light receiving element 14 b for detecting the presence or absence of a conveyed product W on the conveyor belt 13 and transmitting a passage signal is attached to the front end portion of the side frame 12. Instead of the photoelectric sensor 14, a mirror reflection type photoelectric sensor may be used.

  As shown in FIG. 3 in an enlarged manner, the direction changing device 4 has a pair of left and right front-rear directions fixed to the opposing surfaces of the plurality of horizontal rods 15 that join the opposing surfaces of the left and right support legs 5 together. On the upper surface of the support rods 16 and 16 facing, it is provided as follows.

  On the reinforcing plates 17 and 17 fixed to the upper surfaces of the two support rods 16, two sets of left and right brackets 18 and 18 are fixed at predetermined intervals in the front-rear direction. Three front and rear direction changing units 19 are attached to the upper surface of 18.

  Each direction changing unit 19 includes an air cylinder 20 with the telescopic rod 20a facing upward, a pair of front and rear elevating rods 22 and 22 fixed to the upper surface of the horizontal plate 21 at the upper end of the telescopic rod 20a, A pair of front and rear and left and right bearings 24 bolted to the upper surface of the lifting plate 23 fixed to the upper surface, a pair of front and rear drive shafts 25 and 25 rotatably supported by left and right bearings 24, Brackets 29 are respectively mounted on the geared motor 26 that rotates the driving shaft 25 in the same direction and the front and rear support pieces 28 and 28 fixed to the upper ends of the side support plates 27 on both sides of each lifting rod 22. There are provided a plurality of right and left direction changing rollers 30 that are rotatably mounted via the two.

  The left and right guide rods 31, 31 protrude downward from the lower surfaces of the front and rear end portions of the horizontal plate 21, and the lower end portions of the guide rods 31 are fixed to the front and rear surfaces of the air cylinder 20. The piece 32 is slidably fitted. Thereby, the telescopic rod 20a can move up and down stably.

  The geared motor 26 is attached to a hanging piece of a side support plate 27 on one end side of the lifting rod 22 in a suspended state, and moves up and down in conjunction with the operation of the air cylinder 20. A balance weight 33 is attached to the other end of the lifting rod 22 to prevent the load from acting on the telescopic rod 20a by balancing with the weight of the geared motor 26.

  A plurality of grooved pulleys 34 are fixed to the drive shaft 25 so as to face each of the direction change rollers 30. As shown in FIG. 1, the pivot shaft 35 of each direction changing roller 30 has the axis of the roller 11 of the branching conveyor 2 so that the rotation direction of all the direction changing rollers 30 faces the same direction as the branching conveyor 2. It is inclined sideways in the same direction.

  When the drive belt 36 is wound around each grooved pulley 34 and each direction changing roller 30 facing the pulley 34 and the drive shaft 25 rotates, each direction changing roller 30 is synchronously rotated in the same direction, that is, in FIG. It is designed to rotate around.

  As shown in FIG. 1, each direction changing roller 30 is located in a rectangular space between the front and rear support rollers 7 adjacent to each other and the conveyor belt 8 adjacent to the left and right. When extended upward, each direction changing roller 30 rises from the lower limit position below the conveying surface of the conveyor belt 8 to the upper limit position where the upper end slightly protrudes on the conveying surface as shown by the two-dot chain line in FIG. It is supposed to be.

  Moreover, since the three front and rear direction changing units 19 are independent of each other, the direction changing rollers 30 arranged in front and rear of the respective direction changing units 19 can be lifted and lowered independently.

  The front and rear drive shafts 25 in each direction changing unit 19 are driven as shown in FIG. That is, the drive motor 40 is wound around the drive pulley 38 fixed to the rotary shaft 37 of the geared motor 26 and the driven pulleys 39 and 39 fixed to the side ends of the drive shafts 25 and 25, whereby the geared motor 26. When the drive pulley 38 is rotated in the direction of the arrow, the front and rear drive shafts 25, 25 are rotated in the direction of the arrow synchronously, and the front and rear direction change rollers 30 linked to them are also in the same direction. Rotate synchronously.

  Next, the effect | action of the direction change apparatus 4 of the said embodiment and the direction change method of a conveyed product by it are demonstrated.

  When changing the direction of the conveyed product W sent to the main conveyor 1 to the branching conveyor 2, it is performed as schematically shown in FIGS.

  First, as shown in FIG. 5A, in a state where all the direction changing rollers 30 are lowered, the rear end of the preceding conveyed product W1 is located at the front of the rearmost (most upstream side) direction changing unit 19. While passing over the direction change roller 30 and when the front end portion of the subsequent transported object W2 reaches above the rear direction change roller 30 of the rearmost direction change unit 19, the air of the last direction change unit 19 The cylinder 20 is operated, and the front and rear direction changing rollers 30 are raised.

  Next, as shown in FIG. 5 (b), immediately after the rear end of the preceding conveyed product W 1 passes over the direction change roller 30 at the front of the center direction change unit 19, The air cylinder 20 is actuated to raise the front and rear direction changing rollers 30. At this time, the subsequent conveyed product W2 moves forward while maintaining a constant interval with respect to the preceding conveyed product W1 and gradually changing the direction to the right side (direction of the branching conveyor 2).

  Next, as shown in FIG. 5 (c), immediately after the rear end of the preceding conveyed product W1 passes through the front direction change roller 30 of the front direction change unit 19, the frontmost air cylinder 20 is moved. Actuate to raise the front and rear direction change rollers 30. As a result, all the direction change rollers 30 are raised, and the subsequent conveyed product W2 is completely changed direction and transferred to the branching conveyor 2.

  In this way, immediately after the preceding transported object W1 passes through the front direction changing roller 30 of each direction changing unit 19, that is, according to the passage of the transported object W1, from the front and rear direction changing rollers 30. In order, specifically, the rearward direction changing roller 30, the central direction changing roller 30, and the foremost direction changing roller 30, such as the rearmost direction changing roller 30, are sequentially raised by sequentially raising the respective direction changing rollers 30 arranged in the transport direction. The transported object W2 can be turned immediately after the transported object W1 traveling straight ahead and transferred to the branching conveyor 2.

  Further, since the rearward direction change roller 30 is raised after the front end portion of the succeeding transported object W2 reaches above, the preceding transported object W1 is transported forward without any trouble, and the succeeding transported object W2 is also Since the front end portion of the front end portion does not come into contact with the rearward direction changing roller 30 and is transported on the upper surface thereof, it is possible to prevent damage or the like of the conveyed product.

  In addition, since the distance between the preceding transported object W1 and the subsequent transported object W2 can be reduced to a dimension that is approximately the same as or slightly larger than the separation dimension of the rollers 30 before and after the direction changing unit 19, the transported object can be reduced. The waiting time on the upstream side is shortened, and the conveyance efficiency and branching (sorting) efficiency are improved.

  In addition, in order to send the conveyed product W at regular intervals, the passage of the conveyed product W is detected by the photoelectric sensor 14 provided in the delivery conveyor 3, and the delivery conveyor 3 is intermittently set at regular intervals based on the passage signal. Drive control may be performed. Each air cylinder 20 can also be operated by a signal from the photoelectric sensor 14 or in conjunction with the delivery conveyor 3.

  In the state shown in FIG. 5 (c), when a further succeeding transported object sent from the rear of the transported object W2 is caused to advance straight on the transport path of the main conveyor 1, the rear end of the transported object W2 is the rearmost part (the most upstream stream). Immediately after passing the front direction changing roller 30 of the side) direction changing unit 19, the rearmost direction changing roller 30 is lowered (see the two-dot chain line in FIG. 5 (c)), and further the central direction changing The roller 30 and the foremost direction changing roller 30 may be sequentially lowered immediately after the conveyed product W2 passes through each direction changing roller 30.

  Further, when the further subsequent transported object sent from the rear of the transported object W2 is redirected again, only the direction change rollers 30 before and after the rearmost (most upstream side) direction changing unit 19 are used for the transported object W2. When the front end of the succeeding conveyed product reaches the upper part of the rearward direction changing roller 30 at the rearmost part (most upstream side) of the rearward direction changing unit 19, the rollers 30 are raised. Just do it. If it does in this way, a subsequent conveyance thing can change a direction again immediately after the conveyance thing W1 changed the direction previously, and can be conveyed to the conveyor 2 for a branch.

  The present invention is not limited to the above embodiment.

  In the above embodiment, in order to reduce the number of air cylinders 20, the direction changing rollers 30 are moved up and down in two rows by one air cylinder 20, but they are moved up and down by separate air cylinders. It may be. Further, the motors 26 for rotating the direction changing rollers 30 in two rows at the front and rear may be provided individually.

  Furthermore, in the said embodiment, although the direction change roller 30 before and behind each direction change unit 19 raises / lowers simultaneously, it is made to raise / lower each of these several direction change rollers 30 arranged in a conveyance direction each independently. Also good.

  When the main conveyor 1 is inclined downward and the conveyed product moves on each direction changing roller 30 by its own weight, the geared motor 20 for rotating the roller 30 and the driving member linked thereto can be omitted. Further, instead of the air cylinder 20, lifting means linked to a servo motor or the like can be used.

  The timing at which the air cylinder 20 is actuated to raise and lower each direction changing roller 30 can also be controlled by a timer or the like that operates based on the detection signal when the photoelectric sensor 14 detects the passage of the conveyed product W.

  The present invention can also be applied to a case in which the main conveyor 1 is only a plurality of conveyor belts 8 arranged in the left-right direction or only a driving support roller 7.

It is a top view of the whole conveyor to which this invention is applied. Similarly, it is a longitudinal cross-sectional view which follows the II-II line of FIG. FIG. 3 is an enlarged longitudinal sectional side view taken along line II-II in FIG. 2. It is a side view of the roller drive part of a direction change unit. It is a schematic side view which shows an example of the direction change method of a conveyed product in order.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main conveyor 2 Branching conveyor 3 Sending conveyor 4 Direction change apparatus 5 Support leg 6 Side frame 7 Support roller 8 Conveyor belt 9 Side frame 10 Linear frame 11 Roller 12 Side frame 13 Conveyor belt 14 Photoelectric sensor 14a Light emitting element 14b Light receiving element 15 Horizontal rod 16 Support rod 17 Reinforcement plate 18 Bracket 19 Direction change unit 20 Air cylinder (lifting means)
20a Telescopic rod 21 Horizontal plate 22 Elevating rod 23 Elevating plate 24 Bearing 25 Drive shaft 26 Geared motor 27 Side support plate 28 Support piece 29 Bracket 30 Direction change roller 31 Guide rod 32 Guide piece 33 Balance weight 34 Pulley 35 with groove Axis 36 Drive belt 37 Rotating shaft 38 Drive pulley 39 Driven pulley 40 Drive belts W, W1, W2

Claims (3)

For branching on the side of the main conveyor, a plurality of direction-changing rollers arranged at predetermined intervals in the conveying direction and the width direction are made to appear on the conveying surface of the conveyed item that has been conveyed on the straight conveying path of the main conveyor. A method of changing the direction of a conveyed product that is transferred to a conveyor.
In all state that lowers the deflecting rollers, in a state in which the conveyed object is conveyed to the downstream side of the linear transport path preceding the time of turning the subsequent conveyance thereof to the branching conveyor, prior to transport When the rear end of the article passes over the direction change roller of the most upstream direction change unit, and the front end portion of the subsequent conveyance object reaches above the direction change roller of the most upstream direction change unit, The conversion roller of the direction change unit on the most upstream side is raised, and then the change roller of the direction change unit is raised in order in accordance with the preceding conveyed product passing through the direction change unit aligned in the conveyance direction. A method for changing the direction of a conveyed product in a conveyor, wherein the direction of the conveyed product is changed to a branching conveyor . In case you are turning the conveyed object is raised each deflecting rollers, the deflecting rollers of the most upstream side temporarily lowered immediately after passage of the conveyed object, front end the redirection of subsequent conveyance thereof 2. The method for changing the direction of a conveyed product in a conveyor according to claim 1, wherein when the roller reaches the upper side of the roller, it is raised again. The conveyor according to claim 1 or 2 , wherein an interval between the preceding conveyance object and the subsequent conveyance object is set to be larger than or equal to the size of one direction changing roller arranged in the conveyance direction. To change the direction of transported goods.

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