JP4980185B2 - Tray-type article conveyor - Google Patents

Description

  According to the present invention, a transported article is placed on and transported on a large number of article transport trays that travel along the transport path, and the tray is tilted so that the transported article slides out of the tray to a chute or the like on the side of the transport path. The present invention relates to a tray-type article conveyance device.

  A number of carts (carriages) that travel along the transport path are provided with a tray that can be tilted, and the tray is tilted by a tilting movement means at a desired position in the course of transporting the article, so that the articles mounted on the tray can be classified by type or 2. Description of the Related Art There is known a tray-type article conveyance device that is classified for each classification destination and is slid from a tray to a chute provided on the side of a conveyance path.

  Conventionally, as a tray-type article conveying apparatus as described above, an L-shaped drop prevention guide having a short side plate for preventing articles from dropping from the tray to the side of the conveyance path during article conveyance is provided on the tray. Provided with a fall prevention guide swing mechanism that swings the fall prevention guide below the tray stacking surface of the tray so that it does not hinder the release of the article during tilting operation. A tray-type article conveyance device is known (see Patent Document 1).

  As shown in FIGS. 8 and 9, the conventional tray-type article conveying apparatus is configured such that an article conveying tray 102 can tilt on a tray tilting support shaft 105 provided on a support 104 of a carriage (carriage). It is supported and tilts with a turning radius R2 to the side with respect to the traveling direction. The fall prevention guide swing mechanism is supported at the lower end of the link plate 106 longer than the turning radius R2 by a link support shaft 107 provided vertically below the tray tilting support shaft 105 of the support 104, An upper end pin 108 suspended from the upper end of the link plate 106 is loosely fitted into a vertically long hole 109 formed in the tray 102. The upper end pin 108 of the link plate 106 rotates with an axial center distance R1 between the link support shaft 107 and the upper end pin 108 as a rotation radius R1.

  The drop prevention guide 103 having an L-shaped cross section having a short side plate for preventing articles from falling from the tray 102 has an L-shaped short side plate covering the side of the tray and an L-shaped long side plate. A swinging shaft hole 103b drilled in a mounting plate 103a provided at the end of the long side plate on the side is inserted into the swinging shaft 111 of the tray 102 so as to be swingable. And the upper end pin 108 suspended from the upper end of the link plate 106 is loosely fitted in the upper end pin insertion hole 103c drilled in the vicinity of the most distal end portion of each of the mounting plates 103a.

  As shown in FIGS. 8 and 9, the fall prevention guide swing mechanism having the above-described configuration is configured such that the tray 102 tilts sideways with respect to the traveling direction, whereby the upper end pin 108 pivot radius R1 when the link plate tilts. The upper end pin 108 moves linearly in the elongated hole 109 in the direction approaching the article placement surface 102A of the tray 102 by a displacement amount r corresponding to the distance between the rotation base R and the turning radius R2 of the tray base end K. It is a mechanism to do.

  As a result, the end portion of the fall prevention guide 103 that is loosely fitted to the upper end pin 108 is rotated about the pivot shaft 110, and the other end portion side of the fall prevention guide 103 is the article placement surface of the tray 102. It rotates in a direction away from 102A. Since the swing shaft 110 is located near one end of the fall prevention guide 103, a slight displacement amount at one end portion of the fall prevention guide 103 becomes a large displacement amount at the other end portion. The short side plate having an L-shaped cross section of the fall prevention guide 103 that covers the side of 102 falls downward from the article placement surface 102A.

In FIG. 9, the axial center distance (rotation radius of the upper end pin 108) R1 between the link support shaft 107 and the upper end pin 108, the rotation radius R2 of the tray base end K, and the upper end pin 108 relative to the tray base end K are shown. The relationship between the displacement amount r and the tilt angle θ is shown. As can be seen from FIG. 9, the tray base end K rotates by the angle θ, and the upper end pin 108 with respect to the tray base end K becomes the displacement amount r. In this case, the short side plate of the fall prevention guide 103 is lowered from the article placement surface 102A of the tray 102, and does not prevent the article from being released during the tilting operation of the tray.
JP 2003-176019 A

  In the conventional tray-type article transport device, the link plate 106 is pivotally supported by a link support shaft 107 provided in the support section 104 and cannot move toward the article placement surface 103A side of the tray. Since the turning radius R1 of the upper end pin 108 is constant, if the tilt angle θ of the tray is small, the short side plate of the fall prevention guide 103 does not fall below the article placement surface 102A, and the article placed on the tray slides. There is a problem that it cannot be released and released. Therefore, it is necessary to increase the tilt angle θ of the tray to increase the tilt of the tray. However, when the tilt of the tray is increased, there is a problem that the impact of the articles released from the tray is large, and is easily damaged or damaged. is there.

  Therefore, the present invention solves the problem in the prior art, and even when the tilt angle of the tray is decreased to reduce the tilt of the tray, the short side plate of the fall prevention guide can be retracted downward from the article placement surface. An object of the present invention is to provide a tray-type article conveyance device that can prevent the articles from being hindered during the tilting operation of the tray and can smoothly slide out the conveyance articles from the tray.

  In order to achieve the above-mentioned object, the present invention according to claim 1 is configured such that a transported article falls on a tray provided on a tray support portion of a carriage that travels along a transport path so as to be tiltable via a tray tilting support shaft. A pair of drop-preventing guides having an L-shaped cross section consisting of a standing short side plate for prevention and a long side plate extending in a substantially horizontal direction on the short side plate are provided laterally in the vicinity of the tip of the long side plate. The drop support guide is swingably provided by a guide support plate attached and a guide support shaft hole fixed to the tray, and the fall prevention guide is swung at the lower portion of the tray in synchronization with the tilting operation of the tray. In the tray-type article conveying apparatus in which the fall prevention guide swing mechanism is installed, the drop prevention guide swing mechanism has a link plate longer than the turning radius of the tray base end portion of the tray tilting support shaft. Vertically downward It is pivotally supported by a link support shaft fixed to the tray support portion through a link lower end vertical hole formed at the lower end of the link plate so as to be vertically movable and rotatable, and is suspended from the upper end of the link plate. The upper end pin is loosely fitted in an upper end pin guide vertically elongated hole formed in the tray, and is loosely fitted in an upper end pin insertion hole formed at the foremost end of the guide support plate. An intermediate pin suspended from the intermediate portion is a tray-type article conveying device that is loosely slidably fitted in a horizontal long hole formed in a link guide board fixed to the tray support portion. is there.

  According to a second aspect of the present invention, in the tray-type article conveyance device according to the first aspect of the present invention, the tray is provided with a roller conveyor.

  According to the tray type article transporting apparatus of the present invention according to claim 1, the link prevention plate swing mechanism has a link plate longer than the turning radius of the tray base end portion. An upper end that is pivotally supported by a link support shaft fixed to the support portion through a vertically elongated hole at the lower end of the link plate so as to be vertically movable and rotatable, and is suspended from the upper end of the link plate. A pin is loosely fitted in the upper end pin guide vertically elongated hole formed in the tray, and is loosely fitted in an upper end pin insertion hole formed at the foremost end of the guide support plate. Since the suspended intermediate pin is slidably fitted in a horizontal long hole formed in the link guide board fixed to the tray support portion, the link plate is synchronized with the tilting operation of the tray. When turning, The intermediate pin of the sheet slides in a horizontal slot formed in the link guide board, so that the upper end pin is moved closer to the article loading surface side of the tray together with the link plate, and the fall prevention guide is shaken by the upper end pin. It is possible to move the short side plate of the fall prevention guide downward from the article stacking surface of the tray so as not to prevent the delivery of the conveyed product. In particular, when the link plate is rotated, the intermediate pin moves horizontally in the horizontal elongated hole. When this horizontal movement is used, the upper end pin moves closer to the article loading surface side of the tray together with the link plate. Compared with the fall prevention guide swing mechanism that does not have a horizontal slot and is supported so that the lower end of the link plate does not move up and down on the link support shaft, the tray tilt angle is reduced and the tray tilt is reduced. In addition, the short side plate of the fall prevention guide can be retracted downward from the article placement surface.

  According to the tray type article transporting apparatus of the present invention according to claim 2, since the tray is provided with the roller conveyor, the transported article is slid out of the tray even at a small tilt angle θ1 of the tray, that is, a small tilt of the tray. be able to.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view of the tray during horizontal conveyance, FIG. 2 is a side view of the tray when tilted, FIG. 3 is an enlarged perspective view showing the main part of the tray support when the tray is tilted, and FIG. FIG. 5 is an explanatory view of the main part of the fall prevention guide swing mechanism, FIG. 5 is an explanatory view of the main part of the drop prevention guide swing mechanism when the tray is tilted, and FIG. 6 is a schematic view showing the operation of the fall prevention guide swing mechanism. In addition, the same code | symbol is attached | subjected suitably to the part which is common in the said prior art, and is demonstrated below.

  The tray-type article conveyance device 1 is provided with a tray 4 that can be tilted via a tray tilting support shaft 3 on a tray support portion 2 of a carriage (not shown) that is connected and travels along a conveyance path. And a roller conveyor 5 composed of a large number of rollers on which a transported article (not shown) is placed, and is tilted by a tray tilting operation means 6 laid at each sorting position at a predetermined sorting position and placed on the tray 4. The conveyed article (not shown) can be released onto a chute (not shown) disposed on the side of the conveyance path.

  As shown in FIGS. 1 and 2, the tray 4 has a pair of fall prevention guides 7 that prevent the conveyed product from dropping from both sides with respect to the traveling direction during article conveyance. The fall prevention guide 7 has a substantially L-shape comprising a short side plate 8 standing so as to cover the side of the tray 4 and a long side plate 9 extending from the short side plate 8 in a substantially horizontal direction. The guide support plate 10 is attached to the side of the long side plate 9 in the vicinity of the tip.

  A guide support shaft hole 11 is formed in the guide support plate 10, and the fall prevention guide 7 is swingably provided in the tray 4 via a guide support shaft 12 fixed to the guide support shaft hole 11 and the tray 4. It is done. An upper end pin insertion hole 13 into which an upper end pin 19 used for swinging of the fall prevention guide 7 is loosely fitted is formed at the most distal end of the guide support plate 10 corresponding to the most distal end portion of the long side plate 9. ing.

  In the lower part of the tray 4, the fall prevention guide 7 is swung around the guide pivot shaft 12 in synchronism with the tilting operation of the tray 4 so as not to hinder the release of the conveyed product when the tray 4 is tilted to prevent the fall. A fall prevention guide swing mechanism 15 for retracting the short side plate 8 of the guide 7 downward from the article stacking surface 4a is provided.

  As shown in FIGS. 1 to 5, the fall prevention guide swing mechanism 15 includes a link plate 16 longer than the turning radius R <b> 2 of the tray 4 base end K that rotates about the tray tilting support shaft 3. A link lower end vertically elongated hole 17 is formed at the lower end of the link plate 16, an intermediate pin 18 is suspended at a substantially middle portion in the longitudinal direction of the link plate 16, and an upper end pin 19 is suspended at the upper end. . The tray base end portion K is in the same position as the upper end pin 19 when the tray 4 is in a horizontal state (see FIG. 4).

  The link plate 16 is pivotally supported by a link support shaft 20 fixed to the tray support portion 2 vertically below the tray tilting support shaft 3 via a link lower end vertically elongated hole 17 so as to be movable up and down and rotatable. Further, the upper end pin 19 of the link plate 16 is loosely fitted in a vertically elongated upper end pin guide vertical hole 21 formed in the tray 4 so that the upper end pin 19 can move linearly toward the article stacking surface 4a side of the tray when the tray is tilted. Further, the upper end pin 19 is located at the forefront of the guide support plate 10 attached to the vicinity of the tip of the long side plate 9 of the fall prevention guide 7 so as to swing the fall prevention guide 7 about the guide pivot shaft 12. The upper end pin insertion hole 13 is loosely fitted.

  Further, the intermediate pin 18 of the link plate 16 is slidably fitted in the horizontal long hole 23 of the link guide substrate 22 fixed to the tray support portion 2 just above the tray tilting support shaft 3. As shown in an enlarged view in FIG. 3, the link guide board 22 having the horizontal long holes 23 is fixed to the tray support portion 2, and the link plate 16 is disposed outside thereof.

  The configuration of the fall prevention guide swing mechanism 15 has been described above, but the operation and effect will be described below with reference to FIGS.

  As shown in FIG. 4, when the tray 4 is in a horizontal state, the axial distance between the link support shaft 20 and the upper end pin 19 is R1, and the distance between the axial center of the tray tilting support shaft 3 and the tray base end K. R2 (the turning radius of the tray base end K), and the axial distance between the intermediate pin 18 and the upper end pin 19 is L, and when the tray 4 is in the horizontal state, the upper end pin 19 and the tray base end The part K is at the same position. When the link plate 16 is rotated in synchronization with the tilt of the tray 4, the upper end pin 19 and the tray base end K are gradually separated with the rotation. This is the amount of displacement of the upper end pin 19.

  When the tray 4 in the horizontal state is tilted by the tray tilting operation means 6, the link plate 16 tilts around the link support shaft 20 in synchronization with the tilting operation of the tray 4, and the link guide board 22. The intermediate pin 18 moves horizontally in the horizontal elongated hole 23. When this horizontal movement is used, the upper end pin 19 of the link plate 16 moves substantially in parallel, so that it moves away from the rotating tray base end K. In this case, the lower end of the link plate 16 is supported on the link support shaft 20 by the link lower end vertically elongated hole 17, and the upper end pin 19 is movable upward in the upper end pin guide vertically elongated hole 21 of the tray 4. The link lower end vertically elongated hole 17 moves Δr upward with respect to the link support shaft 20, the link plate 16 approaches the article stacking surface 4 a of the tray 4, and the upper end pin 19 is relatively moved along the tray base end K. It moves upwards in the direction away from.

  Then, by the upward movement of the upper end pin 19, the fall prevention guide 7 in which the upper end pin 19 is loosely fitted in the most advanced upper end pin insertion hole 13 of the guide support plate 10 swings around the guide pivot shaft 12, The leading edge of the long side plate 9 of the fall prevention guide 7 rotates in a direction approaching the article stacking surface 4a side of the tray 4, that is, a direction away from the tray base end K, and accordingly the fall prevention guide 7 The short side plate 8 falls below the article loading surface 4a. In this case, since the guide pivot shaft 12 and the upper end pin insertion hole 13 are close to each other, the guide pivot shaft 12 is separated from the guide pivot shaft 12 by a slight upward displacement r of the distal end portion of the long side plate 9. The short side plate 8 located at the lower position is lowered below the article stacking surface 4a by a large amount of displacement, and does not interfere with the release of the conveyed article.

  5 and 6 show a state in which the short side plate 8 of the fall prevention guide 7 is retracted below the article stacking surface 4a so as not to hinder the delivery of the conveyed article. At this time, the tilt angle of the tray 4 is shown. θ1 is the amount of movement Δr of the link lower end vertically elongated hole 17 with respect to the link support shaft 20, and the amount of displacement r of the upper end pin 19 with respect to the tray 4 base end K.

  As shown in FIG. 6, when the short side plate 8 of the fall prevention guide 7 is retracted below the article stacking surface 4a, the upper end pin 19 is at the position of R1 + Δr, and the upper end pin for the tray 4 base end K at this time The amount of displacement of 19 is r. That is, when the displacement amount r is reached, that is, when the tray 4 is tilted by the angle θ1, the short side plate 8 of the drop prevention guide 7 is lowered below the article stacking surface 4a so as not to prevent the release. is there. The displacement amount r of the upper end pin 19 is equivalent to the displacement amount r of the upper end pin 108 of the fall prevention guide swing mechanism (paragraph number 0007) shown in FIG.

  As described above, when the tray 4 is tilted, the short side plate 8 of the fall prevention guide 7 is lowered below the article stacking surface 4a and does not interfere with the release of the conveyed article. This is when the amount of displacement from the tray base end K is r. At this time, the tilt angle of the tray 4 is θ1, and the position of the upper end pin 19 is R1 + Δr. On the other hand, when the link guide board having the intermediate pin of the link plate and the horizontal long hole is not provided as in the conventional fall prevention guide swing mechanism, the lower end of the link plate moves up and down on the link support shaft. As shown in FIG. 9, when the displacement amount of the upper end pin (108) is r, the tilt angle of the tray is θ, and the position of the upper end pin (108) is R1.

  Therefore, when the tray 4 is tilted and the displacement amount of the upper end pin 19 from the tray base end K is r, R1 + Δr> R1, and thus θ1 <θ. Therefore, the tilt angle θ1 ( For example, even when θ1; 20 °, θ; 35 °) is reduced, the short side plate 8 of the fall prevention guide 7 can be retracted downward from the article stacking surface 4a. Further, since the tray 4 is provided with the roller conveyor 5, the conveyed articles can be smoothly slid out of the tray 4 even with a small tilt angle θ1 of the tray, that is, with a small tilt of the tray.

It is a side view of the tray at the time of horizontal conveyance which shows this invention Example. It is a side view of a tray at the time of tilting same as the above. It is an enlarged perspective view which shows the principal part of a tray support part at the time of tray inclination same as the above. FIG. 5 is an explanatory view of a main part of the fall prevention guide swing mechanism when the tray is horizontal. FIG. 5 is an explanatory diagram of a main part of a fall prevention guide swing mechanism when the tray is tilted. It is a schematic diagram which shows the action | operation of a fall prevention guide rocking | fluctuation mechanism same as the above. It is a side view of a tray showing a conventional example and during horizontal conveyance. It is a side view of a tray at the time of tilting same as the above. It is a schematic diagram which shows the action | operation of a fall prevention guide rocking | fluctuation mechanism same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tray-type article conveyance apparatus 2 Tray support part 3 Tray tilting support shaft 4 Tray 4a Article loading surface 5 Roller conveyor 6 Tray tilting operation means 7 Drop prevention guide 8 Short side plate 9 Long side plate 10 Guide support plate 11 Guide support shaft Hole 12 Guide pivot shaft 13 Upper end pin insertion hole 15 Fall prevention guide swing mechanism 16 Link plate 17 Link lower end vertically elongated hole 18 Intermediate pin 19 Upper end pin 20 Link support shaft 21 Upper end pin guide vertically elongated hole 22 Link guide substrate 23 Horizontal elongated hole K Base end of tray

Claims (2)

A short side plate for preventing the fall of the transported object and a substantially horizontal direction on the tray provided on the tray support portion of the carriage that advances along the transport path so as to be tiltable via a support shaft for tilting the tray. A pair of drop-preventing guides having an L-shaped cross section consisting of a long side plate extended to the guide plate, a guide support plate attached to the side near the tip of the long side plate, and a guide spindle fixed to the tray In the tray-type article transporting apparatus, provided with a fall prevention guide swinging mechanism that swings the drop prevention guide in synchronization with the tilting operation of the tray, and is provided so as to be swingable by the hole. ,
The fall prevention guide swing mechanism includes a link plate having a link plate longer than a turning radius of the tray base end portion fixed to the tray support portion vertically below the tray tilting support shaft. The upper end pin guide vertically elongated hole formed on the tray is supported by an upper end pin vertically supported and pivoted through a link lower end vertically elongated hole formed at the lower end of the link plate. And an intermediate pin that is loosely fitted in an upper end pin insertion hole formed at the foremost end of the guide support plate and is suspended in a substantially middle portion in the longitudinal direction of the link plate. A tray-type article conveying apparatus, wherein the article is slidably fitted in a horizontal elongated hole formed in a link guide substrate fixed to the frame.   2. A tray type article conveying apparatus according to claim 1, wherein said tray is provided with a roller conveyor.

Images