JP4203094B2 - Article conveying device - Google Patents

Description

  The present invention relates to an article conveying apparatus.

As an article conveying apparatus, as disclosed in Patent Document 1, a large number of rod-shaped materials (11) are separated one by one in the course of conveyance and supplied to the next process. ) In the conveying direction, the fixed bed (41) formed in a staircase shape that displaces toward the downstream in the conveying direction as it goes upward, and adjacent to the fixed bed (41) in parallel, and the rod-shaped material The upstream side surface in the transport direction of (11) is disposed in a stepped shape that is displaced to the downstream side in the transport direction as it goes upward, and is disposed below the movable floor (42), and the movable floor (42) includes a reciprocating drive means (47) for reciprocating the stepped portion (45) above and below the stepped portion (43) in the fixed floor (41). This article conveying apparatus is configured such that when the reciprocating drive means (47) drives the step (45) on the moving floor side to a level higher than the step (43) on the fixed floor side, The step portion (45) captures one rod-like material (11) from the group of rod-like materials placed on the step portion (43) on the fixed floor side, and this is captured in the upper step portion (43) on the fixed floor side. They will be transferred sequentially.
7-23731

  In the article conveying apparatus of Patent Document 1, a fixed floor and a moving floor are adjacent to each other in parallel, and a pair of moving floor-side step portions in which rod-shaped materials that are articles to be conveyed are juxtaposed in a direction orthogonal to the conveying direction And is transferred to a pair of steps on the fixed floor side that are also juxtaposed. Accordingly, the article is required to be a long article having a length exceeding the distance between the pair of moving beds and a length exceeding the distance between the pair of fixed beds. Moreover, it is necessary to take the attitude | position orthogonal to a conveyance direction so that the input attitude | position of articles | goods can be received by the step part of a pair of fixed floor. That is, according to the prior art, articles of various sizes and shapes cannot be discharged in a substantially constant amount while being put in a free posture.

  It is an object of the present invention to discharge articles of various sizes and shapes in a generally constant amount while putting them in a free posture.

According to the first aspect of the present invention, the individual floor surfaces of the plurality of fixed floors are arranged so as to form a downward gradient toward the downstream side in the conveyance direction, and each of the plurality of movable floors is arranged in the conveyance direction with respect to each fixed floor. Adjacent to the side, and repeatedly moving the moving floors to the upper and lower positions with respect to the floor of the fixed floor adjacent to each other at the same time, and transporting the moving floors positioned above each other The floor of each fixed floor is inclined so as to form a downward slope toward the downstream side in the transport direction, and the floor of each moving floor is also transported in the transport direction. The floor of each moving floor is inclined so as to form a downward slope toward the downstream side, and the angle of the floor of each moving floor is set larger than the angle of the floor of each fixed floor with respect to the horizontal .

  As shown in FIGS. 1 to 3, the article conveying device 10 has a direction from one end side to the other end side of the gantry 11 as an article conveying direction, and an inlet chute 12 is provided on one end side thereof, and is conveyed to the back surface of the inlet chute 12. It is equipped with a vibrator 13 for increasing power.

  The article conveyance device 10 supports a plurality of fixed floors 20 on a support member 14 provided on the gantry 11. The article conveying device 10 is arranged so as to form a downward gradient (an angle θ with respect to the horizontal: 5 to 35 degrees, for example) (FIG. 4) with the individual floor surfaces 21 of the plurality of fixed floors 20 facing each other downstream in the conveying direction. is doing. At this time, the floor surface 21 of each fixed floor 20 itself is a slope inclined so as to form a downward slope toward the downstream side in the transport direction. The fixed floor 20 may be equipped with a vibrator to increase the conveying force.

  The article conveying device 10 connects the left and right side guide plates 16 to the lifting drive device 15 supported on the gantry 11, and can freely slide the slide portion 18 fixed to the side guide plate 16 on the slide shaft 17 supported on the gantry 11. Is fitted. Further, an impact relaxation damper 19 is interposed between the gantry 11 and the slide portion 18. The left and right side guide plates 16 are arranged on both sides of the entrance chute 12 and the fixed floor 20 in the width direction, and are provided with a plurality of movable floors 30 interposed therebetween. Each of the plurality of moving floors 30 is arranged adjacent to each fixed floor 20 on the side in the transport direction (in the present embodiment, on the side on the upstream side). The fixed floor 20 and the movable floor 30 are alternately arranged along the transport direction with a constant interval. The article conveying apparatus 10 repeats the raising / lowering operation of the side guide plate 16 and the moving floor 30 by the raising / lowering driving device 15 (the moving floor 30 is directly connected to the raising / lowering driving device 15 and the side guide plate 16 does not necessarily have to be raised / lowered. Absent). That is, the raising / lowering operation of positioning each moving floor 30 at the same time (FIG. 4 (A)) and lower (FIG. 4 (B)) with respect to the floor 21 of the fixed floor 20 to which the floor 31 is adjacent is repeated.

  The floor surface 31 of each moving floor 30 protrudes above the floor surface 21 of the fixed floor 20 at the upper level and immerses below the floor surface 21 of the fixed floor 20 at the lower level. “Immersion” in the present invention means that the moving floor 30 is located below the fixed floor 20. Specifically, the entire moving floor 30 is completely located below the floor surface 21 of the fixed floor 20. Of course, the case where the floor surface 31 of the moving floor 30 stops at substantially the same position as the floor surface 21 of the fixed floor 20 is also included. “Stop at substantially the same position” means a lower state of the floor surface 31 of each movable floor 30 with respect to a line connecting the lowest portions of the floor surfaces 21 of the plurality of fixed floors 20 as shown in FIG. This means that the height difference y from the line connecting the highest portions in the range is 0 to +5 mm, or y is 2 to 10% of the minimum dimension a of the article shown in FIG. FIG. 17B shows a state in which y = about 0 mm and the floor surface 31 of the movable floor 30 is substantially in the same position as the floor surface 21 of the fixed floor 20 in the lower state. FIG. 17C shows a state in which y is a negative value and the floor 31 of the moving floor 30 is completely immersed in the floor 21 of the fixed floor 20 in the lower state.

  The floor surfaces 31 of the respective movable floors 30 positioned at the upper level are arranged so as to form a downward gradient (angle θ with respect to the horizontal, for example, 5 to 35 degrees) toward the downstream side in the transport direction. At this time, the floor surface 31 of each moving floor 30 is itself a slope inclined so as to form a downward slope toward the downstream side in the transport direction (FIG. 4).

  It is preferable that the angle θ (θ1) for the moving floor arrangement is substantially the same as the angle θ (θ2) for the fixed floor arrangement because the article behavior during article conveyance is stable. The value of θ is appropriately adjusted depending on the friction state between the article and the fixed floor 20 or the movable floor 30. As an example, articles such as polypropylene caps, polyethylene caps, polystyrene caps and other resin caps and metal caps made of aluminum, etc. (a) Metals such as stainless steel and aluminum whose surface is finished by general machining Fixed floor 20 and moving floor 30 made of resin, (b) Fixed floor 20 and moving floor 30 made of resin such as polyacetal and polyvinyl chloride whose surface is finished by general machining, (c) Further on these surfaces The angle θ in the case of transporting on the fixed floor 20 or the movable floor 30 to which a tape material with good slipping property is applied is preferably 8 to 25 degrees, more preferably 12 to 20 degrees. If the angle θ1 for the moving floor arrangement is different from the angle θ2 for the fixed floor arrangement, the movement behavior in the upstream and downstream can be changed.

  FIG. 16 shows the relationship between the moving floor arrangement and the fixed floor arrangement with respect to the horizontal angle θ, the floor surface 21 of the fixed floor 20 with respect to the horizontal angle α, and the floor surface 31 of the moving floor 30 with respect to the horizontal angle β.

  As a first mode, a general relationship between angles is shown in FIG. The angle α of the fixed floor 20 with respect to the horizontal of the floor surface 21 is set to be approximately −5 to +15 degrees, which is approximately equal to or slightly larger than the angle θ1 with respect to the moving floor arrangement. This is because the articles are slowly and stably conveyed on the floor surface 21 of the fixed floor 20 to the floor surface 31 of the moving floor 30 downstream. Even if the article does not slip by itself, it is pushed and conveyed by another article from upstream. Next, the angle [beta] with respect to the level of the floor 31 of the movable floor 30 is set to a large value of about +5 to +25 degrees with respect to the angle [alpha] with respect to the level of the floor 21 of the fixed floor 20. This is because the articles are reliably conveyed to the floor surface 21 of the fixed bed 20 downstream while the floor surface 31 of the moving floor 30 is protruding.

  FIG. 16B shows the relationship between the angles when the article is to be transported smoothly as a second form. The angle α with respect to the horizontal of the floor surface 21 of the fixed floor 20 is set to be approximately the same as the angle θ1 for the moving floor arrangement. Furthermore, the angle β with respect to the horizontal of the floor 31 of the moving floor 30 is also set to be approximately the same as the angle θ1 for the moving floor arrangement. This is because when the floor surface 31 of the moving floor 30 is immersed, the articles are smoothly transported to the floor surface 21 of the fixed floor 20 downstream without being rattled. Accordingly, as shown in FIG. 16C, the immersion position of the movable floor 30 is such that the floor surface 31 of the movable floor 30 does not immerse into the floor surface 21 of the fixed floor 20 and the floor surface 21 of the fixed floor 20 It is preferable that the position is such that the floor surface 31 of the moving floor 30 can form a substantially linear relationship, or the position (not shown) where the floor surface 31 of the moving floor 30 slightly immerses about 0.5 to 3 mm.

  The elevating drive device 15 can use an electric cylinder capable of changing and controlling the elevating speed and elevating stroke. The elevating drive device 15 may be a mechanism that converts the rotation of the electric motor into a linear motion, a pneumatic cylinder, or the like.

  Hereinafter, the article conveyance state by the article conveyance device 10 is shown in comparison with the article conveyance state by the article conveyance device 10A as a reference example (FIGS. 5 and 6).

  The article conveying apparatus 10A in FIG. 5 is configured such that the floor surfaces 21 of the plurality of fixed floors 20 are horizontally arranged and the floor surfaces 31 of the plurality of movable floors 30 are moved up and down while being kept horizontal to each other. The article 1 (FIG. 5A) having a size smaller than the pitch p of the adjacent moving floor 30 is moved to the slopes of the fixed floor 20 and the floor surfaces 21 and 31 of the moving floor 30 by repeating the raising and lowering operation of each moving floor 30. Although it can be conveyed by sliding along, the large-sized article 1 (FIG. 5 (B)) is not conveyed only by repeatedly pushing up at the same point even if the raising / lowering operation of each moving floor 30 is repeated.

  In the article conveying apparatus 10 of FIG. 6, the floor surfaces 21 of the plurality of fixed floors 20 are arranged so as to have a downward gradient, and the floor surfaces 31 of the plurality of movable floors 30 are also arranged to have a downward gradient. Both the article 1 (FIG. 6A) smaller than the pitch p of the adjacent moving floors 30 and the article 1 of larger dimensions (FIG. 6B) repeat the raising and lowering operations of the respective moving beds 30. It is conveyed by. That is, when the floor 31 of the moving floor 30 pushes up the article 1 on the floor 21 of the fixed floor 20 due to the rising of the moving floor 30, the inclination of the floor 31 itself of the moving floor 30 moves downstream in the article 1. The conveyance force of is given. The article 1 to which the conveyance force is applied is transferred onto the floor surface 21 of the fixed floor 20 that has a downward gradient along the downstream conveyance direction due to the lowering of the moving floor 30, and the floor surface 21 of the fixed floor 20 itself. Are further slid on the slopes of the floor surfaces 21 of the fixed floor 20 having a downward slope along the transport direction, and are transported downstream. In the process of sliding on the slope of the floor surface 21 of the fixed floor 20, as shown in FIG. 6C, even if it is caught on the fixed floor 20 on the downstream side, it is pushed up from the fixed floor 20 by the next rising of the moving floor 30. And conveyed downstream.

  Accordingly, in the article transporting apparatus 10, the fixed floor 20 and the moving floor 30 are alternately arranged adjacent to each other along the transport direction, and the floor surfaces 21 and 31 are inclined downward toward the downstream side in the transport direction. Regardless of the size and shape of the article 1 and the throwing posture, any article 1 is placed on the floor surface 21 of the fixed floor 20 and pushed up by the floor surface 31 of the movable floor 30. ) Can be carried out and discharged almost at a constant rate.

  The article conveyance device 10 is configured such that the floor surface 21 of the fixed floor 20 adjacent to the floor surface 31 of the moving floor 30 is one cycle of the lifting and lowering operation of the moving floor 30 (one cycle from the lowest position to the highest position to the lowest position). The time ratio protruding above can be controlled to be smaller than the time ratio immersing below the floor surface 21 of the fixed floor 20. As a result, the time during which the article 1 is slid on the floor surface 21 of the fixed floor 20 is longer than the time during which the article 1 is pushed up from the floor surface 31 of the moving floor 30, and the discharge amount of the article 1 can be increased.

  In addition, when the rising acceleration of the movable floor 30 is large, the push-up force exerted on the article 1 by the floor surface 31 of the movable floor 30 is large, and as a result, the conveyance force exerted on the article 1 by the inclination of the floor surface 31 of the movable floor 30 is large. Thus, the discharge amount of the article 1 can be increased.

  In addition, the article transporting apparatus 10 determines the time ratio in which the floor surface 31 of the movable floor 30 protrudes above the floor surface 21 of the adjacent fixed floor 20 in one cycle of the lifting and lowering operation of the movable floor 30 to the fixed floor 20. It is also possible to control to be greater than the time ratio of being immersed below the floor 21 of the floor. As a result, the time during which the article 1 is slid on the floor surface 21 of the fixed floor 20 is shorter than the time during which the article 1 is pushed up by the floor surface 31 of the moving floor 30, and the discharge amount of the article 1 can be reduced.

  When the rising acceleration of the moving floor 30 is small, the push-up force exerted on the article 1 by the floor 31 of the moving floor 30 is small, and as a result, the conveying force exerted on the article 1 by the inclination of the floor 31 of the moving floor 30 is small. Thus, the discharge amount of the article 1 can be reduced.

  Moreover, the maximum value of the moving speed of the moving bed 30 is adjusted as appropriate so that it can be stably conveyed at a desired speed according to the weight of the conveyed article, the fixed floor arrangement angle, the moving floor arrangement angle θ, and the like. As an example, the moving speed of the moving bed 30 when the cap as the article 1 having a weight of about 4 to 10 g is conveyed at θ = 15 degrees is preferably 50 to 300 mm / sec. More preferably, it is 100-200 mm / sec.

  If the value is smaller than the preferred value, it is difficult to give a sufficient conveying force to the article 1. If the value is larger than the preferred value, the conveying speed of the article 1 becomes too high and stable conveyance becomes impossible.

  Next, the relationship between the form of the article 1 and the transportability of the article 1 by the article conveying apparatus 10 will be described. As shown in FIG. 7, as an article 1 to be conveyed by the article conveying apparatus 10, when considering a circular cap 1A, an elliptical cap 1B, a cap with a tube 1C, and a cap with a dogleg-shaped tube 1D, the minimum dimension of the circular cap 1A The height a is the height h, the minimum dimension a of the elliptical cap 1B is the ellipse minor diameter e, the minimum dimension a of the cap with tube 1C is the minimum cap diameter t1, and the minimum dimension a of the cap with tube-shaped tube 1D is the minimum dimension a. The pump head width is t2. In the circular cap and the elliptical cap shown in FIG. 7, h and e are examples of the minimum shape. Of course, in the circular cap, the diameter of the circle may be smaller than h. May be smaller than e. The following description is based on the minimum dimensions of these articles 1.

  (1) Conveyability of the circular cap 1A (the elliptical cap 1B is substantially the same) by the article conveying device 10 (FIG. 8)

  In order to ensure good transportability of the circular cap 1A, the distance x between the adjacent moving beds 30 is set to 0.3 to 2.0 times, more preferably 0.4 to 1.5 times the minimum dimension a (h, e) of the circular cap 1A. It is good to double (FIG. 8A). When the distance x between the adjacent moving floors 30 becomes larger than the above preferable value, the moving floor 30 does not push up the circular cap 1A and cannot be transported (FIG. 8B). Even in the range exceeding 1.0 times, if it is within the above preferable value, it can be conveyed by being pushed by the article 1 from the upstream.

  If the distance x between the adjacent moving floors 30 is less than the above preferred value, the fixed floor 20 and the moving floor 30 do not become an appropriate obstacle for the conveyance of the circular cap 1A, and the circular cap 1A is the floor surface of the fixed floor 20. 21 and the floor 31 of the moving floor 30 continue to roll and are not stopped properly, and the ratio of the circular cap 1A that cannot be stably discharged increases (FIGS. 8C and 8D).

  In order to ensure good conveyance of the circular cap 1A, the level difference d between the line connecting the floor surfaces 21 of the plurality of fixed floors 20 and the line connecting the floor surfaces 31 at the highest rising positions of the plurality of movable floors 30 to each other. (FIG. 12B) should be 0.3 to 3.0 times the minimum dimension a of the circular cap 1A, more preferably 0.5 to 2.5 times.

  If the value is smaller than the above preferable value, the conveying force is insufficient.

  (2) Alignment of the circular cap 1A (the elliptical cap 1B is substantially the same) by the article conveying device 10 (FIG. 9)

  The circular caps 1 </ b> A having the top surface are aligned and discharged so that the center of gravity side (top surface side) is the lower side.

  In FIG. 9, the point drawn at the contact portion between the fixed floor 20 or the moving floor 30 and the circular cap 1A is the rotation center r, and the end point of the upward arrow drawn on the moving floor 30 is the point of action f of the rotational force. It is.

  When the moving floor 30 is at the highest position (FIG. 9A), the rotation start point for alignment of the circular caps 1A becomes a starting point.

  While the moving floor 30 is descending (FIG. 9B), the circular cap 1A moves and is given a downstream conveying force.

  When the moving floor 30 is at the lowest lowered position (FIG. 9C), the rotation center r of the circular cap 1A is at the apex of the fixed floor 20, and the action point f of the rotational force is at the apex of the moving floor 30. Since the circular cap 1A has a downstream conveying force, it can be rotated with a slight rotational force.

  While the moving bed 30 is rising (FIG. 9D), the circular cap 1A rotates and the rotation center r of the circular cap 1A moves to the apex of the moving bed 30 downstream, and the point of action f of the rotational force is the same. Move downstream on the moving bed 30.

  When the movable floor 30 is in the highest position (FIG. 9E), the rotation stops so that the top surface on the center of gravity side of the circular cap 1A is downward, and then the rotation stops and the posture becomes stable.

  While the moving floor 30 is descending (FIG. 9F), the circular cap 1A slides on the fixed floor 20 and does not rotate. In other words, the circular cap 1A was rotated and moved so that the center of gravity of the circular cap 1A was on the lower side.

  In order to ensure the alignment with the center of gravity of the circular cap 1A facing downward, the line connecting the floor surfaces 21 of the plurality of fixed floors 20 and the floor surface 31 at the highest rise position of the plurality of movable floors 30 are provided. The level difference d (FIG. 12B) between the lines connecting the two is preferably 0.2 to 1.7 times, more preferably 0.3 to 1.2 times the minimum dimension a of the circular cap 1A.

  If it is smaller than the above-mentioned preferred value, the rotational force and the conveying force are insufficient, and if it is larger than the preferred value, the rotational force is too strong and it is difficult to align the center of gravity downward.

  As shown in FIG. 10, the article transporting apparatus 10 can transport the small circular cap 1A and discharge it in an aligned state with the center of gravity side of the circular cap 1A being downward. Here, it has been described that the small circular cap 1A can be discharged in an aligned state where the center of gravity side of the small circular cap 1A is downward, but the same alignment is possible with the elliptical cap 1B. Furthermore, it is possible to align the center of gravity side downward in an article having a bias in the center of gravity, such as a cap other than a circle such as a quadrangle or an ellipse, a bowl shape like a box lid, or a round bowl-like article. .

  Further, as shown in FIG. 11, the article transporting apparatus 10 can transport the large circular cap 1A and discharge it in an aligned state in which the center of gravity side of the circular cap 1A is downward. However, if the range of the distance x between the adjacent moving beds 30 exceeds the above-described preferable range, the quantitative supply performance is slightly lowered.

  (3) Transportability of the cap with tube 1C (long article) by the article transport device 10 (FIGS. 12 to 14)

  In order to ensure good transportability of the cap with tube 1C, the pitch p of the moving beds 30 adjacent to each other is preferably 0.9 to 1.95 times the minimum dimension a (t1) (FIG. 7) of the cap with tube 1C. Is preferably 1.1 to 1.7 times. At this time, the selection of the minimum dimension a is determined without considering the tube portion.

  When the pitch p of the adjacent moving beds 30 is larger than the preferable value, the moving beds 30 do not push up the caps with tubes 1C, and the caps with tubes 1C cannot be separated from each other.

  If the pitch p of the adjacent moving floors 30 is less than the above preferred value, the caps with tubes 1C are not fitted between the adjacent moving beds 30, and the caps with tubes 1C cannot be separated from each other.

  When the maximum dimension b of the cap with tube 1C is the maximum cap diameter t3 (FIG. 12A), in order to ensure good transportability of the cap with tube 1C, the floor surfaces 21 of the plurality of fixed floors 20 are set. The level difference d (FIG. 12B) between the line connecting each other and the line 31 connecting the floor surfaces 31 at the most elevated positions of the plurality of moving floors 30 is 0.3 to the maximum dimension b (t3) of the cap with tube 1C. 3.0 times, more preferably 0.5 to 2.0 times.

  When the level difference d between the fixed floor 20 and the moving floor 30 becomes larger than the above preferred value, the time during which the floor surface 31 of the moving floor 30 protrudes above the floor surface 21 of the adjacent fixed floor 20 becomes longer. Emissions are reduced.

  When the level difference d between the fixed floor 20 and the moving floor 30 becomes smaller than the above-mentioned preferable value, the caps with tubes 1C are not fitted between the adjacent moving beds 30, and the caps with tubes 1C cannot be separated from each other.

  As shown in FIG. 13, the article transporting apparatus 10 has a minimum dimension a of the tube cap 1C within the pitch p of the adjacent moving floor 30, and the total length of the cap 1C with tube is equal to the machine width (both side guide plates 16). In the case of being within the total width of the fixed floor 20 and the movable floor 30 sandwiched between them, a large number of the caps 1C with tubes can be separated and discharged one by one. The caps with tubes 1C are fitted between the moving beds 30 adjacent to each other, separated, and conveyed.

  As shown in FIG. 14, the article transporting apparatus 10 was inserted when the minimum dimension a of the cap with tube 1C was within the pitch p of the adjacent moving floor 30 and the total length of the cap with tube 1C was larger than the machine width. A large number of caps with tubes 1C can be separated and discharged one by one. The cap with tube 1 </ b> C slides on the descending floor surfaces 21 and 31 of the fixed floor 20 and the movable floor 30 and is transported.

  In the article conveying apparatus 10 of FIG. 15, the strokes S1 and S2 in which the floor surface 31 of the moving floor 30 protrudes above the floor surface 21 of the adjacent fixed floor 20 are large for the moving floor 30 on the upstream side L1 in the conveying direction. (S1 in FIG. 15A), the moving bed 30 on the downstream side L2 is controlled to be small (S2 in FIG. 15A). According to this, for example, the easily entangled articles 1 such as the cap 1C with a tube and the cap 1D with a letter-shaped tube can be easily separated so as to separate the input articles 1 from each other on the upstream side in the transport direction, On the downstream side, the articles 1 can be discharged stably without changing the discharge amount of the articles 1 over time. S2 is determined as a level difference d between the fixed floor 20 and the movable floor 30. S1 may be set to 1.4 to 4.0 times, preferably about 1.8 to 3.0 times S2.

FIG. 1 is a perspective view showing a state in which the moving floor of the article conveying apparatus is immersed. FIG. 2 is a perspective view showing a state in which the moving floor of the article transporting device protrudes. FIG. 3 is a front view showing the article conveying apparatus. FIG. 4 is a schematic diagram showing the moving up and down operation of the moving floor. FIG. 5 is a schematic diagram showing an article conveyance state in the reference example. FIG. 6 is a schematic diagram showing an article conveyance state in the example of the present invention. FIG. 7 is a schematic diagram showing various articles. FIG. 8 is a schematic diagram showing the relationship between the distance between moving beds and the transportability. FIG. 9 is a schematic diagram showing an alignment operation during article conveyance. FIG. 10 is a schematic diagram showing a conveyance state of the circular cap. FIG. 11 is a schematic diagram showing a conveyance state of a large circular cap. FIG. 12 is a schematic diagram showing the transportability of the cap with tube. FIG. 13 is a schematic diagram showing a transport state of the cap with a tube. FIG. 14 is a schematic view showing a conveyance state of the cap with a large tube. FIG. 15 is a schematic diagram showing a modification example regarding the protruding stroke of the moving floor. FIG. 16 is a schematic diagram showing the relationship between the angle and arrangement of the fixed floor and the moving floor. FIG. 17 is a schematic diagram illustrating an immersion state of the moving floor with respect to the fixed floor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Goods 10 Goods conveyance apparatus 15 Lift drive device 20 Fixed floor 21 Floor surface 30 Moving floor 31 Floor surface

Claims (7)

Arrange the individual floor surfaces of the plurality of fixed floors so as to form a downward slope toward the downstream side in the conveyance direction,
Each moving floor is placed adjacent to each fixed floor on the side of the conveyance direction, and the moving floor is repeatedly moved up and down to position the moving floor at the upper and lower positions with respect to the fixed fixed floor. , The floors of the moving floors positioned at the top are arranged so as to form a downward slope toward the downstream side in the transport direction,
The floor surface of each fixed floor is inclined toward the downstream side in the conveyance direction so as to form a downward gradient, and the floor surface of each movable floor is inclined so as to form a downward gradient toward the downstream side in the conveyance direction. ,
The article conveying apparatus in which the floor surface of each movable floor is set to have an angle with respect to the horizontal, and the floor surface of each fixed floor is set to be larger than the angle with respect to the horizontal. The floor of each mobile bed angle relative to the horizontal, the article transport device to the floor is not 5 degrees to an angle relative to horizontal 25 degrees greater claim 1, wherein each fixed bed. The angle the floor of the fixed bed for horizontal, claim 1 is set substantially equal to or slightly greater to the inclination angle of the arrangement floor of the moving floor forms a descending slope toward the downstream side in the transport direction to each other Or the article conveying apparatus of 2 . The angle of the floor surface of each fixed floor with respect to the horizontal is -5 degrees to 15 degrees with respect to the inclination angle of the arrangement in which the floor surfaces of the respective movable floors form a downward gradient toward the downstream side in the transport direction. 3. The article conveying apparatus according to 3 . Arrange the individual floor surfaces of the plurality of fixed floors so as to form a downward slope toward the downstream side in the conveyance direction,
Each moving floor is placed adjacent to each fixed floor on the side of the conveyance direction, and the moving floor is repeatedly moved up and down to position the moving floor at the upper and lower positions with respect to the fixed fixed floor. ,
Inclining the floor surface of each fixed floor toward the downstream side in the transport direction so as to make a downward slope, and also inclining the floor surface of each moving floor toward the downstream side in the transport direction so as to make a downward slope,
The arrangement that the floor surfaces of the respective moving floors are directed toward the downstream side in the conveying direction is a downward slope of the same angle as the downward slope of the floor surface of each moving floor,
An article transporting apparatus in which the floor surfaces of the respective movable floors are arranged toward the downstream side in the transport direction so as to have a downward slope having the same angle as the downward slope of the floor surface of each fixed floor. A position where the floor surface of each moving floor forms a substantially linear relationship with the floor surface of each fixed floor, or the floor surface of each moving floor is slightly immersed in the floor surface of each fixed floor, below the moving up and down movement of each moving floor. The article conveying apparatus according to claim 5 , wherein the article conveying apparatus is at the position. A stroke floor of the moving floor protrudes above the floor surface of a fixed bed adjacent, larger for a moving bed of the upstream side in the transport direction, of claim 1 to 6 for controlling small for moving bed downstream The article conveying apparatus according to any one of the above.

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