JP4642614B2 - Article filling and stacking conveyor - Google Patents

Description

  The present invention relates to an article-packing and stacking and conveying apparatus for arranging and placing a plurality of packaging bodies filled with articles on a pallet so that the plurality of pallets placed and arranged can be stacked and conveyed. .

  Conventionally, as for products such as bottled and canned products, a system in which a large number of products packed in a required number of boxes for transportation are stacked and transported on a pallet has been adopted. When a pallet is used for stacking and transporting a large number of such articles having substantially the same shape (packaging boxes), it is known to use a palletizer as a device for automatically performing the stacking operation.

  As conventional technology of the palletizer, empty pallet supply means for supplying an empty pallet to a product loading position, article supply means for supplying articles (mainly boxed) in a predetermined arrangement pattern, and empty pallet are conveyed to the supply means. And an unloading means for unloading the article group after a predetermined number of stages are stacked, and the lifting means receives an empty pallet supplied from an empty pallet supply means and stacks one article. First elevating means that descends every time, and second elevating means that operates so as to descend and stack a specified number of stages each time the stacking is performed by the first elevating means. Patent Document 1 discloses a palletizer having a double structure lifting means.

  In general, a palletizer that does not use lifting means employs lifting / lowering means for raising and lowering pallets by chain driving (Patent Document 1), supplying empty pallets, supplying articles to be stacked, or articles. For example, a plurality of laterally moving pushers and complicated holding means are required for feeding out pallets stacked in layers (for example, Patent Document 2).

JP 2001-19163 A JP 2001-328727 A

  As described above, in a conventional apparatus (palletizer) that arranges and arranges a large number of articles on a conventional pallet and stacks a plurality of pallets on which the articles are arranged and arranged, for example, Patent Document 1 discloses that As is known, there is a problem in that the structure becomes complicated due to the adoption of a double structure lifting means in order to rationalize the supply of empty pallets and the stacking of articles onto the pallets. Also, if a large amount of articles are to be processed, as is known from, for example, Patent Document 2, a large number of pushers are used because the articles are frequently moved laterally and processed. There is a problem that smooth work cannot be performed due to a timing shift.

  In general, many palletizers are structured so as to handle boxed articles, so that the handling may function so as to align solids. For example, bagged articles are arranged on a pallet. In such a case, it is not easy to automate the handling of the article. In addition, there are cases where articles are suspended using a robot to arrange and arrange articles on a pallet. However, according to such a method, a robot must be separately arranged, and therefore In addition to requiring a large installation space, there is a problem that the equipment cost increases.

  The present invention has been made in view of such circumstances, and allows the articles to be arranged and arranged in the middle of the pallet delivery section to the stacking section, simplifying the overall configuration and saving the space, An object of the present invention is to provide an article filling and stacking and conveying apparatus suitable for accumulating packed articles.

In order to achieve the above object, an article filling and stacking / conveying apparatus according to the present invention comprises:
A pallet supply means can be supplied sequentially taken out from the lower side a plurality of empty pallets raised product one by one,
Article arrangement filling means for arranging and arranging a plurality of articles on the pallet supplied from the pallet supply means ;
Pallet stacking means adapted to sequentially stack and hold actual pallets loaded with articles from the article arrangement filling means ,
A pallet conveying means arranged from the lower part of the pallet supply means to the lower part of the pallet stacking means,
The article arrangement filling means is disposed between the pallet supply means and the pallet stacking means, and a travel drive body is installed so as to cross the upper side perpendicular to the travel axis of the pallet transport means, An article receiving container supported by a traveling drive body and reciprocating in a predetermined section, the article receiving container having a receiving article discharge gate having an upper surface opened and opened and closed by a control command at a lower portion, and the article receiving container It is configured to move between an article receiving position and an article discharging position to the pallet according to a control command (first invention).

Oite the first invention, the pallet transport means is an conveyor for conveying to pay out the pallet stack unit after placing filled with articles by the article disposed filling means empty pallets received in said pallet supply means It is preferable that a lifter is provided so as to be movable up and down at a corresponding position between the pallet supply means and the pallet stacking means ( second invention).

In the first invention or the second invention, it is preferable that at least the lifter provided in the pallet stacking means includes a measuring instrument (third invention).

  According to the present invention (first invention), there are provided a pallet supply means for sending out an empty pallet, an article arrangement filling means for arranging and arranging articles to be loaded on the supplied empty pallet, and an actual pallet in which articles are arranged and arranged. By arranging a series of pallet stacking means for stacking to the required number of stages and pallet transport means for sequentially transporting the pallets to each work position, everything from the alignment of a plurality of articles to an empty pallet to the stacking of a plurality of pallets is completed. Can be done automatically. In addition, the entire apparatus can be compacted, and space saving can be achieved.

  Moreover, even if the package of the article to be loaded is a bag, by using a box pallet and arranging one by one in sequence without hanging in the article arrangement and filling means, it is possible to ensure reliable loading. It has the advantage of being easy to do and automated. In addition, the arrangement and arrangement of the articles does not require a separate device such as a robot, so that the apparatus can be installed in a small space.

Further, in the present invention, the article receiving container is set to the article receiving position by the traveling drive body that reciprocates in the direction intersecting above the conveyor on the conveyor (pallet conveying means) that picks up the empty pallet from the stack supply location and conveys it. By sequentially moving the article discharge position to the pallet, sequentially arranging and arranging on the pallet, and feeding the conveyor intermittently according to the number of multiple alignments on the pallet, there is no need for a separate lifting robot or the like The articles can be arranged and arranged on the pallet. When the articles are loaded on the pallet, they can be sent to the pallet stacking means and stacked. Therefore, it is possible to automate the process from loading of articles to stacking of pallets loaded with loads without complicated movement of the pallet, so that the space can be saved.

Further, according to the second invention, there is an advantage that the lateral movement of the pallet is facilitated, the conveyance path is simplified, and the configuration of the entire apparatus can be simplified.

  Furthermore, since the lifter for raising and lowering the pallet is equipped with a measuring instrument, when the pallet is moved in the vertical direction, it can be measured simultaneously, so that the mass of the article to be transported can be detected without requiring a separate operation. Convenience can be provided.

  Next, specific embodiments of the article filling and stacking and conveying apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 shows a schematic diagram of an article filling and stacking conveyance apparatus according to this embodiment. 2 is a plan view of FIG. 1, FIG. 3 is a right side view of FIG. 1 (a) and a plan view (b) showing a holding claw piece of the pallet holding mechanism, and FIG. FIG. 5 is a perspective view showing a specific example of a box pallet handled in the present embodiment.

  The article filling and stacking / conveying apparatus 1 according to this embodiment includes a pallet supplying means 2 (hereinafter referred to as “pallet supplying apparatus 2”) that can sequentially take out and supply a plurality of stacked empty pallets one by one from the lower side. ), An article arrangement / filling means 4 (hereinafter referred to as “article arrangement / filling device 4”) for arranging and arranging a plurality of articles on the supplied pallet C, and a pallet on which the articles are loaded (see FIG. The pallet stacking means 3 (hereinafter referred to as “pallet stacking device 3”) adapted to sequentially stack and hold the “arranged pallet C ′”) and the lower part of the pallet feeding device 2 To pallet conveying means 10 (hereinafter referred to as “pallet feeding conveyor 10”) communicating with the lower part of the pallet stacking apparatus 3.

  The pallet supply device 2 and the pallet stacking device 3 are arranged in series at a predetermined interval, and an article arrangement and filling device 4 is arranged between the pallet supply device 2 and the pallet stacking device 3. A pallet feed conveyor 10 is arranged in a straight line below the supply device 2, the article arrangement and filling device 4, and the pallet stacking device 3.

  Further, as shown in FIG. 5, the pallet C used in the article filling and stacking and conveying apparatus 1 has a box-shaped article housing in which an upper surface of a normal flat pallet Ca is surrounded on all sides by a plate material having a required height. It is a box pallet integrally provided with a part Cb. In addition, the height dimension h around the box-shaped portion is set to a height dimension at which the articles F to be aligned and accommodated (in this embodiment, bags filled with powder are handled) do not protrude.

  In the pallet supply device 2, a lifter 23 for taking out the pallet C is disposed in the center of the lower half of the support frame 21 that is framed to a required height, and is opposed to the four corners of the pallet C at an intermediate position. Each pallet holding claw mechanism 25 is provided. Also, in the upper half of the support frame 21, at least two adjacent pallets C can be moved in the vertical direction while the pallet C operated in the vertical direction by the lifter 23 is kept at a predetermined position. The guide member 22 for guiding is supported by the support frame 21 and arranged in the vertical direction. In this embodiment, guide members 22 and 22 are provided at a position facing the position indicated by the arrow d in FIG. The lifter 23 includes a column 23a that moves up and down with a lifting cylinder (not shown) that is operated by fluid pressure (for example, hydraulic pressure) and a lift table 23b that is attached to the top of the column 23a. Is provided in a range from a position below the support surface to a position slightly above the pallet support position E (see FIG. 3) by the holding claw piece 26 of the pallet holding claw mechanism 25.

  In the pallet supply device 2 thus configured, as shown in FIG. 2, one surface represented by the arrow d in the upper half portion surrounded by the support frame 21 is opened, and an empty pallet C is formed inside from this surface. It is carried and stacked by a forklift.

  In the pallet holding claw mechanism 25, a holding claw piece 26 is attached to the top end portion of an upright rotating shaft 26a so as to protrude substantially horizontally, and is rotated forward and backward at a required rotation angle at the insertion port Cd of the pallet C loaded. It is configured to be moved in and out. Although the rotation operation of the holding claw pieces 26 is not shown in the figure, for example, all the rotation shafts 26a are rotated in synchronization by a chain drive or a link mechanism, and the holding claw pieces 26 are simultaneously moved into the insertion port Cd of the pallet C. To go in and out. Since the holding claw piece 26 holds a load applied to the pallet C in a state of being inserted into the insertion port Cd of the pallet, the holding claw piece 26 is formed to have a strength corresponding to the load.

  The pallet stacking device 3 is structurally similar to the pallet supply device 2. Accordingly, components that are the same as or similar to those in the pallet supply apparatus 2 in the configuration are denoted by the same reference numerals or the same reference numerals, and detailed description thereof is omitted. The lifter 33 in the pallet stacking apparatus 3 includes a pallet C mounted on the lift table 33b and a measuring instrument 34 that directly measures the load of the mounted article. Further, the upper half of the support frame 21A is opened so that the stacked pallets can be carried out in the direction indicated by the arrow e in FIG. The guide member 22A is provided at a position symmetrical to that of the pallet supply device 2. However, it is not limited to this.

  The pallet feed conveyor 10 is a chain conveyor arranged in a straight line from the lower side of the pallet supply device 2 to the lower side of the pallet stacking device 3, and lifters 23 and 33 in the pallet supply device 2 and the pallet stacking device 3 are arranged. Two endless conveyor chains 11 and 11 are installed at a required interval so as to cross the movement of the lift tables 23b and 33b, and are driven in synchronization.

  The pallet feed conveyor 10 is composed of two conveyor frames 12 arranged in a horizontal state in parallel in the lower portions of both support frames 21 and 21A from the lower side of the pallet supply device 2 to the lower side of the pallet stacking device 3. Along the main members 13, 13, between the drive sprocket 16 attached to the drive shaft 14 and the driven sprocket 17 attached to the driven shaft 15, which are respectively supported by bearings at both ends of the main members 13, 13. Thus, the conveyor chains 11 are wound around. In this pallet feed conveyor 10, for example, a drive shaft 14 disposed on the pallet stacking device 3 side is rotated forward and backward by a deceleration drive motor 18, and is basically driven from the pallet supply device 2 side to the pallet stacking device 3 side. Is done. And the conveyor chain 11 is comprised so that the tension | tensile_strength side (winding upper side) may run along the main member 13 upper surface of the said conveyor frame 12. As shown in FIG. Further, the conveyor chain 11 is provided with locking pieces (not shown) that protrude upward at a plurality of positions at a slightly wider pitch than the length dimension (short side dimension) of the pallet C to be handled. The pallet C is prevented from shifting in the front-rear direction during conveyance.

  As shown in FIGS. 1, 2, and 4, the article arrangement and filling device 4 is provided between the pallet supply device 2 and the pallet stacking device 3 and is orthogonal to the upper side of the pallet feed conveyor 10. The support frame 42 supported on the support base 41 constructed in this way, the two drive chains 43 and 43 (corresponding to the traveling drive body of the present invention) reciprocatingly supported by the support frame 42 and the drive thereof A mechanism and a bucket 45 for receiving an article that is moved and operated by the drive chains 43 and 43 (corresponding to an article receiving container in the present invention).

The drive chains 43 and 43 for moving the article receiving bucket 45 are slidably supported by slide rail surfaces provided on two parallel main members 42a and 42a of the support frame 42. Drive sprockets 46a and 46a on the drive shaft 46 supported by brackets 44 and 44 attached to one end of the members 42a and 42a, and brackets 44a and 44a attached to the other ends of the main members 42a and 42a. It is wound between driven sprockets 47 a and 47 a on the driven shaft 47, and is driven forward and reverse by a reduction motor 49. Then, the drive chain 43 and 43, the not shown control device, the pallet feeding conveyor 10 to empty pallet C sent into the article mounting position, is disposed an extension on top of the running center line X ₀ of the bucket 45 The articles F fed one by one by the roller conveyor 6 are received in the bucket 45 and the articles F are fed so as to be sequentially aligned in the boxes of the pallet C on the pallet feeding conveyor 10. For this purpose, the roller conveyor 6 is reciprocated by changing the position sequentially from the receiving position Y ₀ by the roller conveyor 6 (the movement end portion by the drive chain 43) to the article loading position in the box of the pallet C at predetermined intervals. ing.

  The article receiving bucket 45 includes a bucket body 45a having a square shape with an open top and a required volume for receiving articles F, and an article discharge gate 48 that is opened and closed at a lower portion of the bucket body 45a. The support legs 45b and 45b provided on both side surfaces in the direction intersecting the moving direction of the bucket body 45a are connected to and supported by the drive chains 43 and 43, respectively. The article discharge gate 48 includes two gate pieces 48a and 48a, each of which is pivotally supported by a bracket attached to an outer side below the support legs 45b and 45b of the bucket body 45a. It comprises driving means (not shown) for opening and closing the gate pieces 48a, 48a. The article discharge gate 48 is normally closed so as to hold the article F received in the bucket body 45a, and when discharged, when the control signal is received from the outside, the article F that has been opened and held by the operation of the driving means is held. It is designed to be discharged downward. The drive means for opening and closing the gate pieces 48a, 48a is configured to be operated via a link mechanism with, for example, an electric cylinder (or hydraulic cylinder). The article discharge gate 48 is preferably formed so that the tips of the gate pieces 48a, 48a are close to the upper surface of the box part of the pallet C located below when opened. In this way, the articles F discharged from the bucket body 45a can be loaded into the aligned position without difficulty.

  In the article filling and stacking and conveying apparatus 1 of this embodiment, the pallet supply apparatus 2, the pallet stacking apparatus 3, the pallet feed conveyor 10 and the article arrangement and filling apparatus 4 have predetermined operating devices by control means (not shown). In this order, they are operated in sequence. These control devices are operated by a control program in combination with actuators (motors, linear cylinders, etc.) of each part.

  Next, the operation of the article filling and stacking conveyance device 1 according to the present embodiment will be described with reference to the operation explanatory diagrams (FIGS. 6 to 9). In addition, in this embodiment, it describes in the aspect which piles up a pallet three steps. For the sake of explanation, the pallet is represented by the symbol “C” when generically referring to the empty pallet, and the pallet that is taken out and supplied and moved is denoted by a suffix (numeral) added to the symbol C. . Further, a pallet (actual pallet) on which the article F is mounted is represented by a symbol “C ′”.

  First, as shown in FIG. 6 (a), three box pallets (pallet C) carried by a forklift (not shown; the same applies hereinafter) are stacked in the support frame 21 of the pallet feeder 2. It has been. When an operation start command is issued in the control panel, the drive unit of the lifter 23 of the pallet supply device 2 is actuated by a preset control signal, and the rod of the lift cylinder (not shown) is moved forward, and the lift cylinder Is protruded and the lift table 23b is raised (see FIG. 6B).

Lifting tables 23b rises in the operation of the lifter 23, as shown in FIG. 6 (c), the lift slightly in contact with the lifting table 23b in the pallet C ₁ of the lowermost empty pallets C being staked Stop in state. As a result, the holding claw pieces 26 of the pallet holding claw mechanisms 25 located at the four corners supporting the empty pallets C that have been stacked up to that point are removed from the load. Therefore, the rotary shaft 26a to which the holding claw pieces 26 are attached. Are simultaneously moved from the pallet insertion port Cd to the outside (represented by a two-dot chain line in FIG. 3B), and the holding of the stacked pallets C is released.

In this state, the pallet holding claw mechanism 25 is released, and the mass of the entire empty pallet C on which the lifters 23 are stacked is received and supported. Therefore, as shown in FIG. 6D, the lifter 23 is lowered by the height of one pallet. As a result, a plurality of (substantially two) empty pallets C stacked down to a position where the holding claw piece 26 can be inserted into the insertion port Cd, so that the rotating shaft 26a of the pallet holding claw mechanism 25 is moved. is reversely rotated, the holding pawl 26 is inserted toward the empty pallets C ₂ spigot Cd in the second stage from the bottom which is supported by the lifter 23 to hold the stacking pallet (FIG. 6 (e )reference).

Next, the lifter 23 is lowered. Then, as shown in FIG. 6 (f), the first-stage empty pallet C ₁ supported by the lift table 23 of the lifter 23 is lowered together with the lifter 23, and the lift table 23 b is eventually conveyed by the pallet feed conveyor 10. When descends past the line CL (see FIG. 6 (g)), the palette _{C 1} was lowered by the lifter 23 is received in the pallet feed conveyor 10, is transferred thereon conveyor chain 11, 11. Thus, empty pallets C ₁ of the transfer has been the first stage in the pallet feeding conveyor 10 is horizontally moved to the goods-layout filling device 4 side, which is the next step.

On the other hand, the lifter 23 of the pallet feeder 2 shifts poised to receive empty pallets C ₂ of the second stage in the standby state rises again by the next command (see FIG. 6 (h)). However, at this point, not immediately lowered receives the second stage of the empty pallet C _2, to wait before it can receive in response to loading conditions of the article F for an empty pallet C ₁ earlier.

When the empty pallet C ₁ is transferred to the pallet feed conveyor 10, the deceleration drive motor 18 is normally driven by a command signal given in accordance with a program, and the empty pallet C ₁ is once transported to a fixed position of the pallet stacking device 3. (See FIG. 8 (i)). Then, a little lift the empty pallet C ₁ by the lift table 33b the pallet stacker 3 of lifter 33 is raised actuated. Then, since the measuring device 34 is attached to the lifter 33, the mass of the empty pallet C ₁ is measured via the lifter 33. That is metering tare of empty pallets C _1, is recorded in the meter recording apparatus (not shown) of the installed separately. Thus the weighing of the tare is completed, lowered lifter 33 to the standby position, the empty pallets C ₁ on the conveyor chain 11, 11 (pallet feeding conveyor 10) is returned, given command reverse-way traveling in the pallet feed conveyor 10 Then, the empty pallet C ₁ is sent back directly under the article arrangement and filling device 4.

FIG. 7 is a diagram for explaining the procedure for aligning and filling articles on a pallet in the article arrangement and filling apparatus. The empty pallet C ₁ sent by pallet feeding conveyor 10, as shown the arrangement of an article on the right side of FIG. 7, aligned articles F (bag body filled with powder), for example 4 × 3 rows If you place, first, an empty pallet C ₁ laterally first column (drawing longitudinal axis X1) to the article F (bagged product) can be aligned position (just under the bucket travel centerline position X ₀₎ Stop once (position indicated by a two-dot chain line α in the figure). Drive chain 43 and 43 of the article disposed filling device 4 in conjunction with the feed is started, the bucket 45 of the article receiving to move by the roller conveyor 6 to the loading dock position Y _0.

  Articles F are supplied from the roller conveyor 6 toward the article arrangement and filling device 4 at predetermined intervals. It is preferable to provide a control stopper (not shown) at the end of the roller conveyor 6 or a position in front of the roller conveyor 6 so as to control the supply speed of the articles F to be sent.

Article F sent by the roller conveyor 6, to the bucket 45 to wait consignee position Y _0, is dropped from the end of the roller conveyor 6 is introduced into the bucket body 45a. Since the bucket 45 is in a state in which the discharge gate 48 attached to the lower portion thereof is closed, when the article F is received in the bucket body 45a, the drive chains 43 and 43 are driven in the return direction in accordance with the timing. First (X1-Y1) according to the set pallet alignment acceptance order (the crossing position between the vertical axis and horizontal axis of the article arrangement shown on the right side in FIG. Move to the position and stop. Reaches a predetermined position, the discharge gate 48 in accordance with the control command is opened, the article F in the bucket body 45 is dropped into the box pallet C _1. At this time, since the gate pieces 48a, 48a of the discharge gate 48 are kept in an obliquely downward posture with their tips closed (see FIG. 1), the discharge gate is caused by the weight of the article F when opened. In response to the opening of 48, sliding down along the inner surface of the gate pieces 48a, 48a, the article F is correctly dropped at the target position. Further, the tips of the gate pieces 48a, 48a of the discharge gate 48 are related so as to be close to the upper surface of the pallet C when opened, so that the articles F can be put in a comfortable posture without throwing in the articles F from a high position. Can be placed normally. The discharge gate 48 is quickly closed when the article F is dropped so that the next operation can be handled.

Thus the article F is disposed in the first position, the bucket 45 receives the articles F supplied by the roller conveyor 6 is fed by the operation of the drive chain 43 to the goods reception position Y _0. When the article F is received in the bucket 45, the drive chains 43, 43 are reversed to move the bucket 45 to the second drop position (X1-Y2). When the article F from the bucket 45 in the manner is turned disposed at a predetermined position within the box pallet C _1, sends the bucket 45 in the loading dock position Y ₀ by drive chain 43, 43 actuated again, the next article Receive F. Thereafter, the operation of the bucket 45 is repeated and the articles F received sequentially are arranged in the third (X1-Y3) and fourth (X1-Y4) boxes in the pallet.

Thus, the article F is placed in the first row (X1) in the box pallet C _1, by the operation of the control means, is driven pallet feeding conveyor 10 according to the procedure set in advance, the article of the pallet C ₁ second column (X2) and a position of the arrangement is moved to the right under position of the bucket travel centerline X ₀ of the article disposed filling device 4 (diagram sent aligned one pitch to the position shown by the two-dot chain line beta) .

When the pallet C ₁ is stopped is sent by one pitch, again the drive chain 43 of buckets 45 is actuated to receive the articles F sent by the roller conveyor 6 to move the bucket 45 in the loading dock position Y _0, bucket 45 to drop the articles F from the bucket body 45a within the box pallet C ₁ at the position until returned by the procedure in the second column 1st (X2-Y1). Thereafter, the above operation is repeated to arrange the articles F in the second to fourth positions (X2-Y2 to X2-Y4).

When the article is aligned in the second column in the box pallet C ₁ (X2), it shows a pallet C ₁ pallet feeding conveyor 10 is driven again aligned one pitch moved to (drawing, by a two-dot chain line ε position). Thereafter, the bucket 45 of the article arrangement and filling device 4 operates in the above manner, and the articles F are sequentially dropped and arranged at the alignment position of the third row (X3). It should be noted that when the pallet C ₁ is ready to receive articles by linking the feeding of the pallet C ₁ and the cargo receiving operation of the bucket 45, the articles F are input from the bucket 45 to the _first in each row of the pallet C _1. If it is possible, work efficiency can be improved.

When a predetermined amount of articles are loaded on the pallet C by the article arrangement filling device 4, in other words, when the articles have been put into the fourth row (X3-Y4) of the third row, for example, the bucket of the article arrangement filling device 4 The movement of 45 is counted, an article arrangement end signal is given to the control means, and the pallet feed conveyor 10 is driven. In this way, the pallet (actual pallet C ₁ ′) on which a predetermined amount of articles is loaded is conveyed as it is to a predetermined position of the pallet stacking apparatus 3 by the pallet feed conveyor 10 and stopped at a fixed position (a position directly above the lifter 33).

  FIG. 8 and FIG. 9 are explanatory diagrams of how to stack actual pallets in the pallet stacking apparatus.

Pallet actual pallet C _{1 ',} the actual pallet C _1' that is fed into the stacker 3 is stopped at a predetermined position (FIG. 8 (i) refer) and, first lifter 33 is operated pallet actual pallet C _{1 '} The lift table 33b is raised to a position where it is separated from the support state by the feed conveyor 10 (see FIG. 8J). In this state, the weighing instrument 34 is operated to measure the mass of the actual pallet C ₁ ′. The measured value is automatically recorded in a meter recorder (not shown) installed separately. By subtracting the previously measured tare weight value from this weight value, the total mass of the article can be known.

Next, as shown in FIG. 8 (k), the lift table 33b that has been stopped for weighing is further raised, and the actual pallet C ₁ ′ mounted on the lift table 33b is inserted into the insertion port. The inner upper surface of Cd is lifted to a height that is slightly higher than the position of the holding claw piece 26 of the pallet holding claw mechanism 25 (see FIG. 3A). Note that when the actual pallet C ₁ ′ starts to rise, or before that, the respective rotating shafts 26 a of the pallet holding claw mechanism 25 are rotated to retract the holding claw pieces 26 provided at the top to a position where they do not come into contact with the actual pallet C ₁ ′. Keep it. After the actual pallet C ₁ ′ rises to the highest level, the rotating shaft 26 a of the pallet holding claw mechanism 25 is reversely rotated to insert the holding claw pieces 26 into the insertion port Cd of the actual pallet C ₁ ′ that is lifted all at once ( (See FIG. 8 (l)). Thereafter, when the lifter 33 is lowered, the actual pallet C ₁ ′ supported by the lift table 33 b is received at the four corners by the holding claw pieces 26 inserted into the insertion port Cd, and the lifter 33 becomes empty. Descent to a fixed position. As a result, as shown in FIG. 8 (m), the actual pallet C ₁ ′ is held by one stage of the pallet holding claw mechanism 25 and received in the support frame 21 </ b> A of the pallet stacking device 3.

In this pallet stacking apparatus 3, the articles are arranged and arranged by the article arrangement and filling apparatus 4 on the empty pallet C supplied from the pallet supply apparatus 2 to the pallet feed conveyor 10 as described above, and a predetermined amount of articles are mounted. When the pallet C ′ is sent to the fixed position (see FIG. 8 (n)), the pallet C ′ is positioned directly below the actual pallet C ₁ ′ received earlier. The actual pallet C ′ is weighed on the actual pallet C ′ fed in the course of being lifted by the lifter 33 in the above procedure (see FIG. 8 (o)), and the lifter 33 is lifted and mounted on the lift table 33b. When the actual pallet C ′ reaches a position where it comes into contact with the bottom surface of the actual pallet C ₁ ′ previously held by the pallet holding claw mechanism 25, the holding claw of the pallet holding claw mechanism 25 is interlocked with this operation. The pieces 26 are rotated to the retracted position from the insertion port Cd of the previous actual pallet C ₁ ′ held all at once. As a result, the actual pallet C ₁ ′ located on the upper side is stacked on the actual pallet C ′ on the lift table 33b.

As shown in FIG. 8 (p), the lifter 33 ascends to the highest position with the actual pallets C ₁ ′ and C ′ stacked in two stages. In this state, the pallet holding claw mechanism 25 is reversely operated so that the holding claw pieces 26 are simultaneously inserted into the insertion ports Cd of the second stage C ′ of the actual pallet. Thereafter, when the lifter 33 is lowered, the second and first stage actual pallets C ′ are received by the holding claw pieces 26 of the pallet holding claw mechanism 25 inserted into the insertion port Cd (FIG. 8 (q)). And (see (r)), the lifter 33 is lowered to the standby position, and the actual pallet C ′ is stacked in the support frame 21A.

Thereafter, when the next actual pallet C ′ is fed to the predetermined position of the pallet stacking apparatus 3 by the pallet feed conveyor 10 (see FIG. 8 (s)), the lifter 33 is operated in the manner described above to measure the actual pallet C ′. (See FIG. 9 (t)), the actual pallet C 'lifted to the bottom surface of the previous second actual pallet C' where the lifter 33 is lifted and held is brought into contact with the two-stage stacking. The actual pallets C ₁ ′ and C ′ are raised together (see FIG. 9 (u)). The holding claw piece 26 in the pallet holding claw mechanism 25 is retracted as described above (see FIG. 9 (v)), and all the actual pallets are pushed up to the highest lifted position of the lifter 33 (see FIG. 9 (w)). The holding claw pieces 26 of the pallet holding claw mechanism 25 are reversely rotated and inserted into the lowermost (third stage) pallet insertion port Cd all at once (see FIG. 9 (x)). Thereafter, when the lifter 33 is lowered, the actual pallets are stacked in three stages in the support frame 21A of the pallet stacking apparatus 3 as shown in FIG. 9 (y). Each stacked pallet can be stacked without damaging the contained articles by forming the height of the side plate of the article containing portion to be higher than the height of the loaded article (bag body) as described above. it can. Therefore, three or more stages can be stacked as necessary within a range that does not hinder transportation by a forklift.

  The actual pallets C ′ stacked in multiple stages in this way are collectively taken out from the take-out opening of the support frame 21 </ b> A in the direction of arrow e by a forklift and are carried out separately to the transport unit.

  In the above description, pallet tare weighing is described using a weighing instrument provided in the pallet stacking device. However, if a weighing device is also installed on the pallet supply device side, a lifter can be used to remove an empty pallet. In addition, since the tare weighing of the pallet can be performed at the same time, the work can be performed more efficiently.

Schematic diagram of article filling and stacking conveyance device of this embodiment Plan view of FIG. FIG. 1A is a right side view and FIG. 1B is a plan view showing a holding claw piece of a pallet holding mechanism. AA sectional view in FIG. The perspective view showing a specific example of the box pallet handled by this embodiment Operation explanatory diagram of the pallet supply device in the article filling and stacking conveyance device of the present embodiment Explanatory drawing of article alignment arrangement on pallet by article arrangement filling device Explanatory drawing of how to stack actual pallets in the pallet stacker Explanatory drawing of how to stack actual pallets in the pallet stacker

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Article filling stacking conveyance apparatus 2 Pallet supply apparatus 3 Pallet stacking apparatus 4 Article arrangement | positioning filling apparatus 6 Roller conveyor 10 Pallet feeding conveyor 11 Conveyor chain 21 Support frame 21A of pallet supply apparatus Support frame 22, 22A of pallet stacking apparatus , 33 Lifter 23b, 33b Lift table 25 Pallet holding claw mechanism 26 Holding claw piece 26a Rotating shaft 34 Weighing instrument 41 Support base 43 Drive chain 45 Bucket for receiving goods 48 Goods discharge gate C Empty pallet C 'Actual pallet Cd Insertion F article

Claims (3)

A pallet supply means can be supplied sequentially taken out from the lower side a plurality of empty pallets raised product one by one,
Article arrangement filling means for arranging and arranging a plurality of articles on the pallet supplied from the pallet supply means ;
Pallet stacking means adapted to sequentially stack and hold actual pallets loaded with articles from the article arrangement filling means ,
A pallet conveying means arranged from the lower part of the pallet supply means to the lower part of the pallet stacking means,
The article arrangement filling means is disposed between the pallet supply means and the pallet stacking means, and a travel drive body is installed so as to cross the upper side perpendicular to the travel axis of the pallet transport means, An article receiving container supported by a traveling drive body and reciprocating in a predetermined section, the article receiving container having a receiving article discharge gate having an upper surface opened and opened and closed by a control command at a lower portion, and the article receiving container An article filling and stacking conveying apparatus configured to move between an article receiving position and an article discharging position to a pallet according to a control command . The pallet transport means is a conveyor for conveying to pay out the pallet stack unit after placing filled with articles by the article disposed filling means empty pallets received in said pallet supply means, the said pallet supply means pallet The article filling and stacking conveyance apparatus according to claim 1 , wherein a lifter is provided so as to be movable up and down at a position corresponding to the stacking means. 3. The article filling and stacking / conveying apparatus according to claim 1, wherein at least the lifter provided in the pallet stacking means includes a measuring device.

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