JP2009249113A - Compiling/carrying device of product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compiling/carrying device of products, capable of compiling the products in many lines, and carrying the complied products to one take-out position where post-processing after compiling is facilitated. <P>SOLUTION: The compiling/carrying device of the products comprises a carrying table 6 disposed near an outlet 4 of a supplying conveyer 2, and supporting the products A on an upper surface of that; and two aligning guides 8 for forming the products A to be the complied products B complied in the many lines. Those aligning guides 8 successively form the compiled products B by independent box motion, and carry those toward one take-out position P5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a product stacking and transporting apparatus that stacks products and transports them as a stacked product.

In order to accumulate products supplied intermittently from a supply conveyor in a large number of rows, for example, a stacking device having a comb-shaped alignment guide, that is, an alignment guide having a stacking groove row is known (Japanese Patent No. 3456773). Specification). The alignment guide of this known stacking device is moved so that each groove of the stacking groove row sequentially matches the end of the supply conveyor, and a predetermined number of products supplied from the supply conveyor are received in each groove, and the integrated product Form.
Japanese Patent No. 3456673

  The above-described known stacking apparatus performs product stacking in the alignment guide in the process in which the alignment guide is intermittently moved on each of the forward movement side and the backward movement side. There are two locations on the forward and backward sides of the guide. For this reason, in order to transfer the accumulated product from each take-out position to a subsequent box-packing device or the like, the box-packing device is arranged at two pick-up positions, or the box-packing device is arranged at one of the pick-up positions. In this case, a transfer device such as a robot for transferring the accumulated product from the other take-out position to the boxing device via an extra trajectory is further required. Processing becomes complicated.

  The present invention has been made based on the above-described circumstances, and an object of the present invention is to provide a product stacking and transporting device that can easily perform post-processing and stack products in multiple rows.

  In order to achieve the above-mentioned object, the product transporting apparatus according to the present invention extends in the horizontal direction intersecting the supply direction of the supply conveyor from the vicinity of the outlet of the supply conveyor for intermittently supplying the product, and the product on the upper surface thereof. And a plurality of alignment guides arranged above the transfer table, each having a plurality of rows of accumulation grooves, the accumulation grooves extending in the supply direction and aligned in the horizontal direction. A plurality of alignment guides that can sequentially receive the products that have reached the outlet in the integrated groove when the integrated grooves of one alignment guide are aligned with the outlet of the supply conveyor. Each of the box motions receiving an integrated product in each collecting groove of the alignment guide on the corresponding side. In order to achieve this, the stacking process in which the corresponding alignment guide is intermittently moved in the horizontal direction and the other alignment guide are preceded in the stacking process in order to sequentially match the stacking grooves of the corresponding alignment guide to the outlet. And a standby mode for waiting the corresponding alignment guide in order to enable the corresponding alignment guide to be integrated following the preceding integration process.

  According to the above-described stacking and conveying apparatus, when the stacking process is performed on one alignment guide, the product in the stacking groove in the process of receiving the product is the upper surface of the supply conveyor or the transfer that defines the outlet of the supply conveyor. It is supported on the upper surface of the table. Thereafter, when the acceptance of the product into the accumulation groove is completed and one alignment guide is intermittently moved, the product in the accumulation groove is transferred from the supply conveyor to the conveyance table or is conveyed on the conveyance table. The

  Even if the stacking process for one alignment guide is completed and an integrated product is formed in the alignment guide, the stacking and conveying apparatus of the present invention includes a plurality of alignment guides. The stacking process is carried out continuously, and the stacked product can be transported on the transport table with one aligning guide independently of the other aligning guides. Therefore, the stacking / conveying apparatus of the present invention makes it possible to carry out the above-described stacking process continuously, and makes the stacking position of the stacked product one.

  Preferably, the plurality of alignment guides perform box motion in horizontal planes that are parallel to the conveyance table and have different heights from the conveyance table, and the corresponding alignment guides in the standby mode are in the preceding accumulation process. An accumulation groove that partially overlaps with another alignment guide in the vertical direction and that is located at the end of the accumulation groove is positioned at a standby position adjacent to the outlet (claim 2).

  In this way, if the box motions of the individual alignment guides are performed on different horizontal planes, the plurality of alignment guides can be overlapped in the vertical direction. That is, the vertical overlap of the alignment guide during the accumulation process and the alignment guide during the standby mode, and the vertical overlap of the alignment guides during the standby mode are allowed. Therefore, at the same time as the stacking process of one alignment guide is completed, the stacking process can be started by the alignment guide in the standby mode.

  On the other hand, the box motion further performs a transport process for transporting the corresponding alignment guide in order to position the stacked product in the corresponding alignment guide at a separation position on the transport table that is horizontally separated from the outlet of the supply conveyor after the completion of the stacking process. (Claim 3). In this case, the accumulated product does not hinder the accumulation of the product in the next alignment guide, and the alignment guide can release the accumulated product by its box motion at a separated position away from the outlet of the supply conveyor. .

  The box motion further includes a retreating process in which the alignment guide is retreated in the groove direction along the accumulation groove following the conveyance process, and the accumulated product is left at a separation position on the conveyance table. The discharging unit may further include a discharging unit that transports the accumulated product at a position to a take-out position on the carrying table, and the discharging unit pushes the accumulated product from the separation position to the take-out position in a direction perpendicular to the groove direction. A pusher is included (claim 4).

  The evacuation process here achieves the release of the above-mentioned integrated product from the alignment guide, and the discharge pusher pushes out the integrated product to bring adjacent product rows of the integrated product into close contact with each other.

Since the product stacking and conveying apparatus according to the first aspect includes a plurality of alignment guides, the product stacking process can be continuously performed, and the stacked product formed in the stacking process is taken out from one take-out position. Therefore, post-processing for transferring the integrated product to a subsequent boxing device or the like becomes easier.
Since the stacking and conveying apparatus according to the second aspect allows the alignment guides to overlap each other in the vertical direction, the area occupied by these box motions can be reduced even if a plurality of alignment guides are provided. This greatly contributes to space saving.

The integrated conveying device according to claim 3 conveys the accumulated product to a spaced position separated from the outlet of the supply conveyor after completion of the accumulation process for one alignment guide, so that the accumulated product itself accumulates the product with respect to the next alignment guide. There is no inhibition.
According to a fourth aspect of the present invention, in the process of releasing the accumulated product from the alignment guide at the separated position and conveying the released accumulated product to the take-out position, the adjacent product rows can be brought into close contact with each other. Later packaging of the integrated product is facilitated.

FIG. 1 schematically shows a product stacking and conveying apparatus according to an embodiment.
The stacking and conveying apparatus is connected to the supply conveyor 2, which feeds the cylindrical product A toward the outlet 4, and causes the product A to reach the outlet 4 intermittently. Here, the outlet 4 is defined in the terminal area of the supply conveyor 2 in this embodiment.
The stacking and conveying apparatus includes a conveying table 6 in the vicinity of the outlet 4, and this conveying table 6 is located on the side of the supply conveyor 2 from the outlet 4, that is, in a direction intersecting the supply direction of the product A on the supply conveyor 2, specifically It extends in the horizontal direction in the orthogonal direction. That is, the transfer table 6 has one end adjacent to the outlet 4 and the other end away from the outlet 4, and the upper surface thereof is positioned at the same height as the outlet 4 of the supply conveyor 2.

  A plurality of alignment guides 8 are arranged above the transport table 6. In the present embodiment, two alignment guides 8a and 8b are provided. These alignment guides 8 form a horizontal comb shape and have comb teeth facing the supply conveyor 2 side. Specifically, the alignment guide 8 has an accumulation groove row 10 that forms the comb teeth. The accumulation groove 12 of the accumulation groove row 10 extends in the supply direction of the product A in the supply conveyor 2, and the conveyance table 6. Are arranged at a constant arrangement pitch in the longitudinal direction (horizontal direction). The accumulation groove 12 has a groove width capable of receiving the products A in a row, and has a length capable of accommodating a plurality of products A.

In the case of the present embodiment, the integrated groove row 10 includes five rows of integrated grooves 12, and each integrated groove 12 has a length capable of accommodating five products A. Accordingly, when each of the integrated grooves 12 of the integrated groove array 10 is filled with the product A, the integrated groove array 10 forms an integrated product B made up of 5 × 5 products A.
As is apparent from FIG. 2, the height positions of the alignment guides 8a and 8b from the transport table 6 are different from each other, and the alignment guides 8a and 8b can perform independent box motions in the horizontal plane at the height position. It has become.

Next, a drive system (moving means) that performs the box motion of the alignment guides 8a and 8b will be described.
As described above, the comb-shaped alignment guides 8a and 8b are each provided with the support bracket 14 on the back thereof, and the advance / retreat cylinders 16a and 16b, that is, the piston rods 18 of the advance / retreat cylinders 16a and 16b are interposed through the support brackets 14 respectively. Each is supported. Each advancing / retreating cylinder 16 is arranged vertically on the side of the conveyance table 6 on the opposite side to the supply conveyor 2, and the piston rods 18 extend in a direction in which the piston rod 18 contacts and separates from the conveyance table 6.

  The upper advance / retreat cylinder 16a is held by the upper linear actuator 22a via the holder 20a. As is apparent from FIG. 1, the linear actuator 22a extends horizontally along the longitudinal direction of the transport table 6 and accommodates a feed screw (not shown) therein. A movable body 24a that reciprocates along the longitudinal direction of the transport table 6 is attached to the feed screw along with its reciprocating rotation, and the holder 20a, that is, the advance / retreat cylinder 16a is connected to the movable body 24a. ing.

  The lower advancing / retracting cylinder 16b is held by the lower linear actuator 22b via the holder 20b. This linear actuator 22b is viewed in the vertical direction with respect to the linear actuator 22a as is apparent from FIG. 3 in addition to FIG. It arrange | positions so that it may mutually overlap, and is extended in parallel with the linear actuator 22a. The linear actuator 22b has the same structure although the vertical direction is different from that of the linear actuator 22a, and the movable body 24b is connected to the holder 20b, that is, the advance / retreat cylinder 16b.

  On the other hand, as shown in FIG. 1, a pair of side guides 26 are provided on the transport table 6, and these side guides 26 are from a horizontal plane where the box motion of the alignment guides 8 a and 8 b described above is performed. Is also arranged on the lower side. Specifically, the pair of side guides 26 are separated from each other in the width direction of the transport table 6 and extend in parallel from one end of the transport table 6 to the other end. The distance between the pair of side guides 26 is set to be approximately equal to the integrated length of the integrated product B along the integrated grooves 12 of the integrated groove array 10 described above.

  Further, on the supply conveyor 2 side, a discharge mechanism 28 is disposed so as to sandwich the transport table 6 between the above-described upper and lower linear actuators 22a and 22b. The discharge mechanism 28 includes a linear actuator 30 similar to the linear actuator 22, and the linear actuator 30 extends above the transport table 6 along the longitudinal direction of the transport table 6.

  The linear actuator 30 includes a movable body 32 on its lower surface, and an advance / retreat cylinder 34 is attached to the movable body 32 via a holder. The advancing / retreating cylinder 34 has a piston rod 36 that contacts and separates from the transport table 6, and a discharge pusher 38 is supported on the piston rod 36 at the end on the transport table 6 side. The discharge pusher 38 is made of an L-shaped plate material and has a pusher surface extending in the width direction of the transport table 6. The discharge pusher 38 is arranged at a position higher than the side guide 26 described above.

Next, the operation of the stacking and conveying apparatus will be described with reference to FIGS.
4A and 4B show an initial state of the stacking and conveying apparatus. In this initial state, for example, the lower alignment guide 8b is positioned at the reception start position P1 where the product A that has reached the outlet 4 of the supply conveyor 2 is received in one accumulation groove 12 of the accumulation groove row 10. That is, at this time, the alignment guide 8b is above the transport table 6, and the stacking groove 12 positioned at the right end of the stacking groove row 10 matches the outlet 4 of the supply conveyor 2 when viewed in FIG. That is, it is arranged so as to be located immediately above the outlet 4. Therefore, the products A that sequentially reach the outlet 4 of the supply conveyor 2 are sequentially received in the accumulation groove 12 that matches the outlet 4, and the leading product A is in contact with the closed end of the accumulation groove 12, They are arranged in a row in the accumulation groove 12.

  On the other hand, at this time, the upper alignment guide 8a is in the standby mode, that is, in the standby state at the standby position P2. Specifically, at the standby position P2, the alignment guide 8a partially overlaps the alignment guide 8b vertically, and the rightmost accumulation groove 12 of the accumulation groove row 10 is adjacent to the left side with respect to the outlet 4, that is, the accumulation groove. The position is shifted to the left side from the outlet 4 by 12 arrangement pitches. In this case, the accumulation groove 12 on the right end of the alignment guide 8a is in a state of being vertically aligned with the accumulation groove 12 on the left side with respect to the accumulation groove 12 on the right end of the alignment guide 8b.

4 to 11, the outlet 4 of the supply conveyor 2 is a product at a position adjacent to the opening end of the corresponding integrated groove 12 in order to clearly represent the integrated groove 12 that matches the outlet 4. A circle similar to A is shown, and in order to facilitate the identification of the alignment guides 8a and 8b, the alignment guide 8b is shown with dots distributed on the surface thereof.
Further, in the initial state, the above-described discharge pusher 38 is also in the standby position P3 retracted from above the transport table 6. This standby position P3 is separated from the outlet 4 on the right side by a predetermined distance as seen in FIG.

  When the accumulation groove 12 at the right end of the alignment guide 8b is filled with the product A, that is, when five products A are received in the accumulation groove 12, the alignment guide 8b is operated by the linear actuator 22b. The stacking groove 12 is intermittently moved to the right by the arrangement pitch of the stacking grooves 12, that is, the other end side of the transport table 6, and the next stacking groove 12 matches the outlet 4. Therefore, after this, the product A that has reached the outlet 4 is received in the next accumulation groove 12, while the rightmost accumulation groove 12 is transferred from the outlet 4 onto the conveying table 6, and the product in the accumulation groove 12 is obtained. A is supported on the upper surface of the transfer table 6.

The intermittent movement of the alignment guide 8b is performed by, for example, a sensor A (not shown) arranged before the outlet 4 of the supply conveyor 2, that is, the product A that has reached the outlet 4, that is, the product A received in the accumulation groove 12. It is controlled by counting the number, and the intermittent movement here is completed within the arrival interval of the product A to the outlet 4.
By repeating the intermittent movement of the alignment guide 8b indicated by the arrow C in FIG. 5, that is, the accumulation process of the alignment guide 8b, each accumulation groove 12 of the alignment guide 8b is sequentially filled with the product A, and the accumulation is performed. Product A is accumulated in the groove array 10.

  When the integration of the product A with respect to the alignment guide 8b is completed and the integrated product B is formed in the integration groove row 10, the alignment guide 8b is moved to the right as indicated by an arrow D in FIG. 6 by the action of the linear actuator 22b. That is, it is moved largely toward the other end side of the transfer table 6 and is positioned at the separation position P4 beyond the standby position P3 of the discharge pusher 36 as seen in the longitudinal direction of the transfer table 6. The movement of the alignment guide 8b here is a transporting process for transporting the integrated product B accumulated in the accumulation groove row 10 from the outlet 4 side to the separation position P4.

  On the other hand, simultaneously with the conveying process of the alignment guide 8b, the upper alignment guide 8a located at the standby position P2 starts the accumulation process similar to the accumulation process in the alignment guide 8b by the action of the linear actuator 22a, and the accumulation groove The accumulation groove 12 at the right end of the row 10 is positioned at the reception start position P 1 that matches the outlet 4. Therefore, the product A is continuously accumulated on the alignment guide 8a in the same manner as the product A is accumulated on the alignment guide 8b.

  When the transporting process of the integrated product B is performed, both sides of the integrated product B are guided by the pair of side guides 26 as seen in the longitudinal direction of the transport table 6, and the integrated product B includes a part of the products A. The alignment guide 8b is stably transported to the separation position P4 without jumping out from the accumulation groove row 10. The pair of side guides 26 not only guide the conveyance of the accumulated product B but also guide the intermittent movement of the product rows formed in each accumulation groove 12 during the above-described accumulation process.

During the accumulation process in the alignment guide 8a, the discharge pusher 38 is advanced from the standby position P3 toward the conveyance table 6 by the action of the advance / retreat cylinder 34 as shown by the arrow E in FIG. Is positioned to the left of the integrated product B in the forward position defined above, that is, the separation position P4.
On the other hand, simultaneously with the advancement of the discharge pusher 38, the alignment guide 8b is moved from the separation position P4 to the outside of the transport table 6, that is, opposite to the standby position P3 of the discharge pusher 38, as indicated by an arrow F, by the action of the advance / retreat cylinder 16b. Retreats toward the groove in the groove direction of the accumulation groove 12. In such a retracting process of the alignment guide 8b, the integrated product B is released from the alignment guide 8b and is left on the transport table 6. Here, as is apparent from FIG. 7, the accumulated product B remaining on the transfer table 6 has an interval between the product rows by the alignment guide 8 b (a spacing interval between the adjacent accumulation grooves 12).

  After the retracting process of the alignment guide 8b is performed, the discharge pusher 38 is moved toward the integrated product B at the separation position P4 by the action of the linear actuator 30, and the integrated product B is defined on the other end side of the transport table 6. It is transported to the taken out position P5 (in the direction of arrow G in FIG. 8). The transport of the integrated product B by the discharge pusher 38 here is because the discharge pusher 38 sequentially pushes each product row of the integrated product B toward the take-out position P5, and as is apparent from FIG. In the process of being conveyed to the take-out position P5, the interval between the product rows is eliminated, and these product rows become an integrated product B ′ in close contact with each other.

  On the other hand, after the above-described retraction process, the alignment guide 8b is moved toward one end side of the transport table 6, that is, toward the end 4 side of the supply conveyor 2, as indicated by an arrow H in FIG. It returns and this regression process is implemented in parallel with conveyance of the integrated product B mentioned above. In the return stroke of the alignment guide 8b here, the alignment guide 8b follows a return line that partially overlaps with the alignment guide 8a in the stacking process in the vertical direction, and when viewed in the longitudinal direction of the transport table 6, It is positioned at the return position corresponding to the standby position P2.

As described above, when the alignment guide 8b performs the return stroke, and when the alignment guide 8a waits at the standby position P2, the alignment guides 8a and 8b are allowed to overlap each other. The area occupied by the box motion of the alignment guide 8 can be kept small, which greatly contributes to space saving of the stacking and conveying apparatus.
Thereafter, as shown by an arrow I in FIG. 9, the alignment guide 8b performs a preparatory process of moving forward from the return position toward the standby position P2 by the action of the advance / retreat cylinder 16b, and is positioned at the standby position P2. On the other hand, the discharge pusher 38 also retreats from the take-out position P5 toward the outside of the transfer table 6 as indicated by an arrow J by the action of the advance / retreat cylinder 34, and thereafter, as indicated by an arrow K in FIG. Then, the linear actuator 30 returns to the standby position P3 by the action of the linear actuator 30, and is positioned at this standby position P3.

The accumulated product B ′ at the take-out position P5 is taken out from the transfer table 6 and boxed by a boxing device (not shown).
Thereafter, as is apparent from FIG. 10, when the integration of the product A by the alignment guide 8a is completed, the alignment guide 8a is connected to the linear actuator 22a as shown in FIG. 11 as in the case of the alignment guide 8b. As a result, the product is moved together with the accumulated product B to the separation position P4. Simultaneously with this movement, the alignment guide 8b at the standby position P2 is positioned again at the reception start position P1, and the accumulation of the product A with respect to the alignment guide 8b is repeated. Therefore, the state of FIG. 11 corresponds to a state in which the positions of the alignment guides 8a and 8b in FIG.

The alignment guide 8a performs the box motion similar to the box motion (C → D → F → H → I) of the alignment guide 8b described above, while the discharge operation of the discharge pusher 38 is repeated, and the alignment guide 8a The accumulated product B conveyed to the separation position P4 is conveyed to the take-out position P5 as the accumulated product B ′.
Accordingly, the box motions of the alignment guides 8a and 8b shown in FIGS. 6 to 10 are alternately and repeatedly performed, so that the product A can be continuously accumulated, and the take-out position P5 of the accumulated product B ′ is determined. Since it is one place, the post-processing of the integrated product B ′ described above becomes easy.

The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, the alignment guide 8 in the standby mode may be intermittently moved toward the reception start position P1 in conjunction with the accumulation process of the other alignment guide 8 on which the product A is being accumulated.
Further, the stacking / conveying apparatus may continuously stack the products A using three or more alignment guides 8.

It is the schematic plan view which showed the accumulation conveyance apparatus of one Example. FIG. 2 is a side view of the stacking and conveying apparatus of FIG. 1. FIG. 2 is a front view of the stacking and conveying apparatus of FIG. 1. The initial state of the stacking and conveying apparatus of FIG. 1 is shown, (a) is a plan view, and (b) is a front view. 4A and 4B show a state of the stacking and conveying apparatus in which product stacking has progressed from the state of FIG. 4, where FIG. 4A is a plan view and FIG. 4B is a front view. The state of the accumulation | conveyance apparatus which the accumulation | stacking of the product transferred from one alignment guide to the other alignment guide is shown, (a) is the top view, (b) is a front view. 6 shows a state in which the operation of the stacking and conveying apparatus has advanced from the state of FIG. 6, (a) is a plan view, and (b) is a front view. 7A and 7B show a state in which the operation of the stacking and conveying apparatus has advanced from the state shown in FIG. 7, where FIG. 8 shows a state in which the operation of the stacking and conveying apparatus has advanced from the state of FIG. 8, (a) is a plan view, and (b) is a front view. 9 shows a state in which the operation of the stacking and transporting apparatus has advanced from the state of FIG. 9, (a) is a plan view thereof, and (b) is a front view. 10A and 10B show a state where the operation of the stacking and conveying apparatus has advanced from the state of FIG. 10, wherein FIG.

Explanation of symbols

2 Supply conveyor 4 Exit 6 Transport table 8a, 8b Alignment guide 10 Accumulated groove row 12 Accumulated grooves 16a, 16b Advancing and retracting cylinder (moving means)
22a, 22b Linear actuator (moving means)
26 Side guide 28 Discharge mechanism (discharge means)
30 Linear actuator 34 Advancing / retracting cylinder 38 Discharge pusher A Product B, B 'Integrated product P1 Acceptance start position P2 Standby position P4 Separation position P5 Extraction position

Claims (4)

A conveyance table that extends in the horizontal direction intersecting the supply direction of the supply conveyor from the vicinity of the outlet of the supply conveyor for intermittently supplying the product, and supports the product on its upper surface,
A plurality of alignment guides arranged above the conveying table, each having a plurality of rows of accumulation grooves, the accumulation grooves extending in the supply direction and arranged side by side in the horizontal direction; A plurality of alignment guides capable of sequentially receiving the products reaching the outlet in the integrated groove when the integrated groove of one alignment guide is matched with the outlet of
A moving means for causing each alignment guide to perform independent box motion,
Individual box motions
In order to receive the product in each collecting groove of the corresponding alignment guide on the corresponding side to form an integrated product, the corresponding alignment guide is moved in the horizontal direction so that the collecting grooves of the corresponding alignment guide are sequentially aligned with the outlet. An accumulation process for intermittent movement;
A waiting mode in which the corresponding alignment guide is made to wait so that when the other alignment guide is in the accumulation process, the accumulation process of the corresponding alignment guide can be performed following the preceding accumulation process. A product collecting and conveying apparatus characterized by the above. The plurality of alignment guides perform the box motion in a horizontal plane parallel to the transfer table and having different heights from the transfer table,
The corresponding alignment guide in the standby mode partially overlaps the other alignment guides in the preceding stacking process in the vertical direction, and the stacking groove located at the end of the stacking grooves has the exit. The product stacking and conveying apparatus according to claim 1, wherein the product stacking and conveying apparatus is positioned at a standby position adjacent to the product.   The box motion moves the corresponding alignment guide in order to position the stacked product in the corresponding alignment guide at a spaced position on the transfer table that is horizontally separated from the outlet of the supply conveyor after the stacking process is finished. The product transporting apparatus according to claim 1, further comprising a transporting process for transporting the product. The box motion further includes a retreat process in which the corresponding alignment guide is retracted in the groove direction along the stacking groove following the transport process, and the stacked product is left in the separated position on the transport table,
On the other hand, it further comprises discharge means for transporting the accumulated product at the separation position to a take-out position on the conveyance table, and the discharge means removes the accumulation product from the separation position in a direction perpendicular to the groove direction. 4. The product conveying and conveying apparatus according to claim 3, further comprising a discharge pusher that pushes out to a take-out position.

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