JP6315438B2 - Container transfer device - Google Patents

Description

  The present invention relates to a container transport device provided with a guide that crosses the traveling direction of a conveyor and hits a container transported by the conveyor, thereby adding a moving component in the lateral direction with respect to the container moving direction.

  Conventionally, as such a container transport device, a double-row transport conveyor that transports containers in a double-row state, a single-row high-speed conveyor that transports containers at a higher transport speed in a single-row state, a double-row transport conveyor and a single-row What is provided with the combiner which couple | bonds with a high-speed conveyor is known (for example, refer patent document 1).

  The combiner is provided in parallel between the double-row transport conveyor and the single-row high-speed conveyor, and includes a single-row conveyor that is driven at a transport speed that is faster than the double-row transport conveyor and slower than the single-row conveyor. The single row conveyor is composed of a plurality of conveyor chains adjacent to each other. Each conveyor chain is driven at a higher transport speed in turn, from the one adjacent to the double row conveyor to the one adjacent to the single row high speed conveyor.

  The combiner is provided with a single-row guide that guides the containers transported by the double-row transport conveyor to the single-row high-speed conveyor. The single-row guide is constituted by a guide member that obliquely intersects the traveling direction of each conveyor in a range from the double-row conveyor to the single-row high-speed conveyor through the single-row conveyor. A moving component in the lateral direction is added to the container by a single-row guide with respect to the movement in the transport direction, and the container is guided to a single-row high-speed conveyor.

  The single-row guide is provided with a rail as a portion in contact with the container. On the upstream side of the single row guide, the rail is provided at a height corresponding to the position of the center of gravity of the container in order to prevent the container from overturning due to a collision with the container. This is because, by causing the collision to occur in the vicinity of the position of the center of gravity of the container, it is possible to avoid as much as possible that a large rotational moment that causes overturning is applied to the container.

  On the downstream side of the single row guide, the container slides on the single row guide, and there is no risk of falling due to a collision with the single row guide. For this reason, on the downstream side of the single row guide, the position of the rail is changed to the vicinity of the conveyance surface of the single row conveyor so as to contact the lower part of the container.

  Each container transported by the double-row transport conveyor collides with the single-row guide, so that the advancing direction is changed obliquely forward and sent out on the single-row conveyor. On the single-row conveyor, each container moves through each conveyor chain while being guided by the single-row guide, and the conveyance speed increases. As a result, each container is made into a single row with a gap between each other, and is sequentially transferred to a single row high-speed conveyor.

Japanese Patent No. 4006285

  In recent years, the weight of containers has been increasing. For example, in the case of a 500 [ml] plastic bottle, an ultra-light weight of 12 [g] or less and a light carbonate bottle of 24 [g] or less have been used. Accordingly, there is a need for a container transport apparatus that can perform stable transport at high speed without causing a reduction in operating rate due to a fall or a decrease in quality due to an impact on a container that has been reduced in weight.

  However, when the vicinity of the center of gravity of the container collides with the rail of the single row guide as in the conventional container transport device, almost all of the inertia force of the container is applied as a reaction force near the center of gravity of the container. This may cause dents or the like in the container, leading to a decrease in the quality of the container. In addition, as the weight of the container progresses, the possibility of falling easily increases only by applying a relatively weak force to the container.

  As a method for avoiding such deterioration and overturning of the container, it is conceivable to reduce the inclination angle of the single-row guide with respect to the container transport direction and to slow the transport speed. However, in that case, inconveniences such as an increase in the combiner and a delay in processing related to the container occur.

  An object of the present invention is to provide a container transport device provided with a guide that can avoid the tipping of the container and deterioration of quality without the need to reduce the tilt angle of the guide and the transport speed in view of the problems of the prior art. .

The container transport device of the present invention is disposed so as to be in contact with the container in a stationary state with respect to the conveyor that transports the container and the container that is transported along the transport direction of the conveyor. And a guide for adding a moving component in the width direction of the conveyor, wherein the conveyor has a horizontal transfer surface, and the guide is perpendicular to the transfer surface of the conveyor. A lower guide part disposed below the center of gravity of the container and an upper guide part disposed above the center of gravity of the container, wherein the upper guide part includes the lower guide It arrange | positions so that a clearance gap may be produced between this container, when contact | abutting to a part.

  In the configuration of the present invention, when the container hits the guide, first, the lower side of the container hits the lower guide portion of the guide. At this point, there is a gap between the container and the upper guide part. Thereafter, the container is tilted by inertial force, so that the container approaches the upper guide portion. The container may hit the upper guide part. Due to the collision between the guide and the container, the container travels obliquely forward because a lateral movement component is added to the movement in the transport direction.

  According to this, when the container collides with the guide, the container tilts after hitting the lower guide part, and during that time, the kinetic energy on the upper side of the container is absorbed through the lower guide part and the like and reduced. For this reason, the impact force received when the container hits the upper guide portion is smaller than in the conventional case where the container hits the guide at once.

  Thereby, the fall rate of the container at the time of colliding with a guide and the damage to a container reduce. Therefore, it is possible to add a moving component in the lateral direction with respect to the movement of the container in the conveyance direction while reducing the tilt of the guide and the conveyance speed of the container and avoiding the fall of the container and the deterioration of the quality. .

  In this invention, 3-30 [%] of the fall angle of this container may be sufficient as the inclination angle with respect to the perpendicular direction of this container when the said container is applied to the said lower guide part and the said upper guide part. According to this, even when the container hits the lower guide part and then hits the upper guide part, the falling rate of the container in that case can be reduced to a predetermined value or less.

  In the present invention, the width of the gap may be determined based on a probability that the container contacts the upper guide portion of the guide. According to this, by setting the width of the gap to such a width that the probability that the container comes into contact with the upper guide portion is relatively small, the kinetic energy of the container colliding with the guide is sufficiently absorbed by the gap. And the fall rate of a container can be reduced.

  Also, even when the container collides with the guide with a large kinetic energy that may tilt as the container falls, the time when the container hits the lower guide, the time when the container tilts, the time when the container hits the upper guide, and the inclination of the container Since the kinetic energy of the container is attenuated at each time point or period of the returning time, the container can be effectively prevented from falling.

  In the present invention, the width of the gap may be 2 to 6 [mm]. According to this, when a plastic bottle having a capacity of 500 [ml] or 2 [liter] is transported as a container, the probability of the container falling down can be favorably reduced.

  In the present invention, the conveyor includes a double-row transport conveyor that transports the containers in a plurality of rows, a single-row high-speed conveyor that transports the containers in a single-row state at a higher speed than the double-row transport conveyor, and the double rows. A single-row conveyor provided between a downstream end of the conveyor and an upstream end of the single-row high-speed conveyor, and the guide is connected to the single-row conveyor from the downstream end of the double-row conveyor. You may provide in the whole range which reaches the upstream edge part of a row | line | column high-speed conveyor, or its part.

  According to this, when the containers supplied to the double-row transport conveyor are made into a single row by the single-row conveyor and sent to the single-row high-speed conveyor, the overturning rate of the containers colliding with the guide can be reduced.

It is a top view which shows the principal part of the container conveying apparatus which concerns on one Embodiment of this invention. It is a figure which shows the positional relationship of a container and a single row | line | column guide when it sees along the length direction of a single row | line | column guide when a container hits a single row | line | column guide, (a) In the case of Example 1 in which the lower contact part protrudes more toward the container than the upper contact part, (b) is the case of Comparative Example 1 in which the protrusion amounts of the lower contact part and the upper contact part are the same. (C) shows the case of Comparative Example 2 in which the upper contact portion protrudes more toward the container than the lower contact portion. It is a graph which shows the effect of Example 1 compared with a comparative example, the horizontal axis | shaft of a graph separates Example 1, the comparative example 1, and the comparative example 2, and a vertical axis | shaft is a fall rate [%].

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, a container transport device 1 according to an embodiment includes a double-row transport conveyor 3 that transports containers 2 in a double-row state, and a single-row high-speed conveyor 4 that transports containers 2 in a single-row state at high speed. And a combiner 5 that couples the double-row transport conveyor 3 and the single-row high-speed conveyor 4. The transport path of the container 2 transported by these is defined by a container guide 7 that guides the container 2 along the transport path.

  Examples of the container 2 include an ultralight bottle having a capacity of 500 [ml] and a weight of 12 [g] or less, and a light carbonate bottle having a capacity of 500 [ml] and a weight of 24 [g] or less. . The double row conveyor 3 is configured by arranging a plurality of conveyor chains 8 driven at the same conveyance speed in parallel in the horizontal direction. The conveyor chain 8 is configured by connecting a large number of resin blocks and is driven by a motor.

  The single-row high-speed conveyor 4 is configured by connecting a plurality of conveyor chains 8 in the length direction. The combiner 5 is a single row provided between the downstream end 3a of the double row conveyor 3, the upstream end 4a of the single row high speed conveyor 4, and the downstream end 3a and the upstream end 4a. It comprises the conveyor 9 and the parts of the container guide 7 corresponding to these.

  The portion of the container guide 7 provided from the downstream side end 3a of the double row conveyor 3 to the upstream side end 4a of the single row high speed conveyor 4 constitutes a single row guide 7a. The single-row guide 7a intersects the transport direction of the conveyor chains 8 of the double-row transport conveyor 3 and the single-row conveyor 9 and hits the transported container 2, thereby moving the container 2 in the transport direction. On the other hand, a lateral movement component is added.

  The single row conveyor 9 includes a plurality of conveyor chains 8 provided in parallel between the double row conveyor 3 and the single row high speed conveyor 4. Each conveyor chain 8 is sequentially driven at a higher transport speed from the first conveyor chain 8 adjacent to the double-row transport conveyor 3 to the last conveyor chain 8 adjacent to the single-row high-speed conveyor 4.

  The first conveyor chain 8 is driven at a higher conveying speed than the double-row conveying conveyor 3. The last conveyor chain 8 is driven at a lower conveyance speed than the single-row high-speed conveyor 4.

  For example, when the container 2 is a 500 [ml] plastic bottle as described above, the transport speed at the downstream end 3a of the double-row transport conveyor 3 is 10 [m / min]. The conveyance speed at the upstream end 4a is 85 [m / min]. When the container 2 is a 2 [liter] plastic bottle, the transport speed at the downstream end 3a is 3 [m / min], and the transport speed at the upstream end 4a of the single-row high-speed conveyor 4 is 32. [M / min]. The speed difference between the downstream end 3a and the upstream end 4a is adjusted by each conveyor chain 8 of the single-row conveyor 9.

  The shape of the single row guide 7a in the length direction and the conveyance speed of each conveyor chain 8 of the single row conveyor 9 are devised so that a large number of containers 2 can be made into a single row smoothly without falling over as much as possible. ing.

  The single-row conveyor 9 forms a single row of the containers 2 transported in a plurality of rows by the double-row transport conveyor 3 in cooperation with the single-row guide 7 a and delivers the single row to the single-row high-speed conveyor 4. During this time, the single-row guide 7a hits the container 2 that is being transported, thereby adding a lateral movement component to the movement of the container 2 in the transport direction, and guiding the container 2 to the single-row high-speed conveyor 4. .

  FIG. 2A shows the positional relationship between the container 2 and the single row guide 7a when viewed along the length direction of the single row guide 7a when the container 2 hits the lower guide portion of the single row guide 7a. Indicates. As shown in FIG. 2A, when the single row guide 7a hits the container 2, the upper guide part 11 hits the upper contact part 10 above the center of gravity of the container 2 and the lower part below the center of gravity. And a lower guide portion 13 that contacts the contact portion 12.

  When the single row guide 7 a hits the container 2, the gap between the upper contact portion 10 and the upper guide portion 11 of the container 2 is reached when the lower contact portion 12 of the container 2 hits the lower guide portion 13. 14 is present. In the case of this embodiment, since the diameters of the upper contact portion 10 and the lower contact portion 12 of the container 2 are equal, the lower guide portion 13 is protruded from the upper guide portion 11 by the width d of the gap 14. Can be configured in this way.

  The value of the width d of the gap 14 corresponds to 4 [mm], for example. The gap 14 has the effect of reducing the probability of the container 2 falling over when it hits the single row guide 7a. Therefore, the lower guide portion 13 can be protruded from the upper guide portion 11 by the width d of the gap 14 only in the portion of the single row guide 7a where the container 2 may fall when it hits. It's enough.

  However, the lower guide portion 13 may protrude from the upper guide portion 11 by the width d of the gap 14 uniformly over the entire range of the single-row guide 7a. This is because the container 2 that hits the container 2 has a low kinetic energy at a location where the container 2 does not fall down when the container 2 hits, so that the container 2 can be sufficiently guided only by the lower guide portion 13.

  As an example, when the container 2 is a 500 [ml] plastic bottle as described above, the vertical width of the upper guide portion 11 of the single row guide 7a is 33 [mm], and the vertical width of the lower guide portion 13 is 60. [Mm], the height of the upper guide part 11 from the conveyor surface of the conveyor chain 8 can be 144 [mm]. In the case of a 2 [liter] plastic bottle, the upper and lower widths of the upper guide portion 11 are 31 [mm], the lower and upper guide portions 13 are 58 [mm], and the height from the conveyor surface is 180 [mm]. It can be.

  In this configuration, several hundreds of containers 2 supplied to the double row conveyor 3 in a state where they are gathered to some extent are conveyed by the double row conveyor 3 and collide with the single row guide 7a from the container 2 on the front side. To do. The colliding container 2 receives a force in the lateral direction from the single-row guide 7a and is pushed out toward the single-row conveyor 9.

  Although there are containers 2 that do not collide with the single-row guide 7a, in the double-row transport conveyor 3, the container 2 that is transported on the side opposite to the single-row conveyor 9 is transported on the single-row conveyor 9 side. The probability of colliding with the single row guide 7a is higher. As the container 2 colliding with the single row guide 7a moves, the containers 2 that do not collide are also pushed out toward the single row conveyor 9.

  The container 2 that collides with the single row guide 7a and is pushed out toward the single row conveyor 9 is continuously pushed onto the faster conveyor chain 8 of the single row conveyor 9 by the single row guide 7a. .

  Thereby, since the space | interval between each container 2 by the side of the single row | line | column guide 7a spreads, the back container 2 interrupts | interrupts between these containers 2, and comes to contact the single row | line | column guide 7a. In this way, all the supplied containers 2 are made into a single row in the process of moving to the faster conveyor chain 8.

[Example 1]
As the container transport device 1, the transport speed of the double-row transport conveyor 3 is 10 [mm / s], the transport speed of the single-row high-speed conveyor 4 is 85 [mm / s], and the conveyor chain 8 constituting the single-row conveyor 9 The number of 12 was prepared. The twelve conveyor chains 8 of the single-row conveyor 9 are driven so that the conveyance speed increases by 10 [mm / s] for every two conveyor chains 8. The length of the combiner 5 along the conveyor chain 8 is 7600 [mm].

  Moreover, the width | variety of the upper guide part 11 of the single guide 7a is 33 [mm], and the width | variety of the lower guide part 13 is 60 [mm]. The conveyance speed at the downstream end 3a of the double row conveyor 3 is 10 [m / min], and the conveyance speed at the upstream end 4a of the single row high speed conveyor 4 is 85 [m / min].

  Each conveyor chain 8 is composed of WT2505G-M (no lubrication with a chain pitch of 25.4 mm) manufactured by Enomoto Chain Co. Further, as shown in FIG. 2A, the single row guide 7a is configured such that the protruding amount of the lower guide portion 13 with respect to the upper guide portion 11 is 4 [mm].

  In addition, since the diameters of the upper contact portion 10 and the lower contact portion 12 of the container 2 are the same, the protrusion amount is 4 mm, which means that the lower contact portion 12 of the container 2 is connected to the lower guide portion 13. It means that the width d of the gap 14 between the upper contact portion 10 and the upper guide portion 11 of the container 2 when hit is 4 [mm].

  The container 2 supplied to the container transport device 1 has a capacity of 500 [ml], a diameter of the lower contact portion 12 and the upper contact portion 10 of 68 [mm], a height of 209 [mm], and a tipping angle. A bottle of 14.0 [°] was prepared. In addition, the fall angle of the container 2 means that the center of gravity of the container 2 is the support point or support line when the container 2 is inclined on the horizontal plane with a part (peripheral part) of the bottom surface as the support point or support line. Is an angle formed by the horizontal plane and the bottom surface. When the container 2 tilts beyond this angle, the container 2 falls.

  Under these conditions, 335 containers 2 were supplied five times at 900 [bpm] onto the double-row transport conveyor 3 and made into a single row by the container transport device 1, and the overturning rate of the containers 2 was examined. As a result, the fall rate was 0.8 [%]. The result is shown in the column of Example 1 in FIG.

[Comparative Example 1]
As shown in FIG. 2B, the single row guide 7a is the same as that of the first embodiment except that the protrusion amount of the lower guide portion 13 with respect to the upper guide portion 11 is zero (the gap 14 is zero). Under the same conditions, the container conveying device 1 was used to form a single row, and the overturning rate of the container 2 was examined. The fall rate was 1.8 [%]. The results are shown in the column for Comparative Example 1 in FIG.

[Comparative Example 2]
As shown in FIG. 2C, the single row guide 7 a has a protrusion amount of the lower guide portion 13 with respect to the upper guide portion 11 of −4 [mm] (the lower guide portion 13 is 4 mm than the upper guide portion 11 The container 2 was made into a single row under the same conditions as in Example 1 except that it was configured to be retreated), and the overturning rate of the container 2 was examined. The fall rate was 2.9 [%]. The results are shown in the column for Comparative Example 2 in FIG.

  From the above Example 1 and Comparative Examples 1 and 2, it can be seen that the fall rate of the container 2 decreases as the protruding amount of the lower guide portion 13 relative to the upper guide portion 11 increases. This point can be considered as follows.

  That is, in the case of the first embodiment, when the container 2 collides with the single row guide 7a, when the lower contact part 12 positioned below the center of gravity of the container 2 collides with the lower guide part 13, the upper contact. The part 10 has not yet collided with the upper guide part 11. Thereafter, the container 2 is tilted, and the upper contact portion 10 comes close to the upper guide portion 11.

  During this time, the kinetic energy on the upper abutment portion 10 side of the container 2 is absorbed through the lower guide portion 13 and the like and decreases. Therefore, after that, even if the upper contact portion 10 collides with the upper guide portion 11, the container 2 is relatively difficult to fall down and the impact force applied to the container 2 is relatively small.

  On the other hand, in the case of Comparative Example 1, the upper guide portion 11 and the lower guide portion 13 collide with the container 2 at the same time. At this time, the container 2 receives the reaction force corresponding to the kinetic energy of the container 2 from the single-row guide 7a at a time. Therefore, the container 2 is relatively easy to fall down, and the impact force applied to the container 2 is larger than that in the first embodiment.

  On the other hand, in the case of Comparative Example 2, when the container 2 collides with the single row guide 7a, the lower abutment occurs when the upper abutment portion 10 located above the center of gravity of the container 2 collides with the upper guide portion 11. The part 12 has not yet collided with the lower guide part 13. Therefore, at this time, a reaction force due to a collision acts on the upper contact portion 10 of the container 2, and an inertial force in the opposite direction acts on the lower contact portion 12 side. Therefore, the container 2 is very easy to fall.

  In addition, this consideration is a thing when the fall phenomenon of the container 2 is simplified and considered. The actual fall mechanism is complex and involves many factors. Specifically, each of the moving speed of the container 2, the shape and size of the container 2, the friction coefficient between the container 2 and the conveyor chain 8, the material (elastic modulus) and weight of the container 2, and the single row guide 7a It is considered that the inclination angle with respect to the conveyor chain 8 and its change, the positions of the upper guide portion 11 and the lower guide portion 13 in the vertical direction, and the like are related.

  In addition, since a large number of containers 2 are successively hit against the single-row guide 7a and the containers 2 also hit each other and affect each other, the overturning mechanism includes the positional relationship between the containers 2 being conveyed and the containers 2 The number of columns is also greatly related. For this reason, it is desirable to determine the width d of the gap 14 in consideration of all the related elements, but a preferable range of the width d can also be predicted based on a certain result of trial.

  That is, the value of the width d can be determined so that a fall rate equal to or less than a predetermined value can be obtained based on the result of examining the fall rate of the container 2 when the value of the width d is variously changed. As a result of such trials, the width d can be determined to be 4 [mm] so that a favorable fall rate of 0.8 [%] can be obtained under the conditions as in the first embodiment.

  However, from the results of Example 1 and Comparative Example 1, when the width d is 4 [mm] or less, the fall rate is considered to decrease as the width d increases. Also, when the width d is 4 [mm] or more, there is an effect of reducing the overturning rate. However, if the width d is too large, the container 2 has a large kinetic energy, and on the contrary, the inclination at the time of the collision of the container 2. Since the amount approaches the fall angle of 14 [°] at rest, the fall rate is considered to increase. Therefore, the width d is preferably 2 [mm] or more and 6 [mm] or less under the trial conditions of the first embodiment.

  Further, even under conditions different from those of Example 1, the container 2 such as a plastic bottle for a vending machine having a capacity of 500 [ml] and a height of about 210 [mm] is simply used under normal conditions. In the case of performing rowing, it is considered that the fall rate can be sufficiently reduced by selecting any value in the range of 2 to 6 [mm] as the value of the width d.

  Further, a good value of the width d of the gap 14 is considered to be substantially proportional to the height of the upper guide portion 11. As described above, the height of the upper guide portion 11 is 180 [mm] for a 2 [liter] plastic bottle and 144 [mm] for a 500 [ml] plastic bottle. Therefore, 5 [mm] obtained by multiplying this height ratio by 4 [mm], which is a good value of the width d in the case of the above-mentioned 500 [ml] PET bottle, is 2 [liter]. This is considered to be a good value of the width d in the case of a plastic bottle. Therefore, even if the height of the container 2 varies somewhat, it is considered that a preferable result can be obtained by selecting the value of the width d from the range of 2 to 6 [mm].

  Further, the fall probability of the container 2 when the container 2 hits both the lower guide portion 13 and the upper guide portion 11 is correlated with the ratio between the inclination angle θ of the container 2 and the fall angle α of the container 2 at that time. It seems that there is a relationship. Therefore, it is considered that the inclination angle θ is preferably within a predetermined ratio with respect to the falling angle α.

  For example, in the case of Example 1 described above, the tipping angle α of the container 2 is 14 [°]. In addition, the inclination angle θ with respect to the vertical direction of the container 2 when the container 2 hits both the lower guide part 13 and the upper guide part 11 is a value 4 [mm] of the width d of the gap 14, and the upper guide part 11. Roughly estimated using the height 144 [mm], θ = arctan (4/144), which is between 1 and 2 [°]. In this case, the inclination angle θ is approximately between 7 and 14 [%] of the falling angle α. Therefore, 3 to 30 [%] including this range can be adopted as a preferable range of the ratio of the inclination angle θ to the falling angle α.

  Further, when the width d is set to a large value Dmax such that the upper contact portion 10 of the container 2 does not hit the upper guide portion 11 of the single row guide 7a at all, the upper guide portion 11 does not exist. Is the same and nothing works. In this case, since the container 2 that collides with the single-row guide 7a collides only with the lower abutting portion 12, if the kinetic energy at the time of the collision is large, the container 2 easily falls. Therefore, the value of the width d is required to be smaller than Dmax.

  Furthermore, the value of the width d may be determined based on the probability that the upper abutment portion 10 of the container 2 hits the upper guide portion 11 of the single row guide 7a. For example, a value of the width d such that each container 2 hits the upper contact portion 10 with a probability of 5 [%] can be adopted. In this case, the 5% container 2 that hits the upper abutting portion 10 has a large kinetic energy and has a high possibility of falling. However, the upper guide portion 11 of the single-row guide 7a hits the upper contact portion 10 of the container 2 that collides with such high kinetic energy, and can effectively prevent the overturning.

  As described above, according to the present embodiment, the upper guide portion 11 of the single row guide 7a reduces the overturning rate of the container 2 between the upper guide portion 11 and the lower guide portion 13 while the container 2 hits the lower guide portion 13. It arrange | positions in the position where the clearance gap 14 produces. For this reason, it is possible to prevent the container 2 from being overturned or deteriorating in quality without having to reduce the inclination angle of the single row guide 7a or the conveyance speed of the container 2.

  In addition, this invention is not limited to the said embodiment. The present invention can be widely applied to a case where a moving component in the lateral direction is added to the movement of the container in the conveying direction by the guide when the container is conveyed in a standing state by the conveyor.

  Therefore, for example, when a container conveyed in a single row is made into a double row, the present invention can also be applied to a case where the conveyor chain that conveys the container is sequentially changed by a guide. Moreover, when transferring a container from a conveyor chain to another conveyor chain connected to the conveyor chain, the present invention can also be applied to a case where a moving component in the lateral direction is applied to the container by a guide.

  In addition, the containers to be conveyed may have different radii between the upper contact portion and the lower contact portion. Even in this case, when the lower contact portion of the container hits the lower guide portion of the guide, the guide is configured such that there is a gap between the upper contact portion and the upper guide portion of the guide that reduces the overturning rate of the container. Thus, the effects of the present invention can be achieved.

  The value of the width d of the gap 14 formed between the upper guide portion 11 of the single row guide 7a and the upper contact portion 10 of the container 2 when the container 2 hits the single row guide 7a You may change according to the position of the guide 7a. Specifically, the value of the width d at each position is changed according to the inclination angle with respect to the conveyance direction at each position of the single row guide 7a, the conveyance speed of the conveyor chain 8 intersecting at each position, and the like. Also good.

  Further, the single row guide 7 a may be provided only in a part of a range from the downstream end portion 3 a of the double row conveyor 3 to the upstream end portion 4 a of the single row high speed conveyor 4.

  DESCRIPTION OF SYMBOLS 1 ... 2 ... Container, 3 ... Double row conveyance conveyor (conveyor), 3a ... Downstream edge part, 4 ... Single row high speed conveyor (conveyor), 5 ... Combiner (conveyor), 7a ... Single row guide (guide) DESCRIPTION OF SYMBOLS 10 ... Upper contact part, 11 ... Upper guide part, 12 ... Lower contact part, 13 ... Lower guide part, 14 ... Gap.

Claims (5)

A conveyor for conveying containers;
A guide that is arranged so as to be in contact with the container in a stationary state with respect to the container conveyed along the conveying direction of the conveyor, and adds a moving component in the width direction of the conveyor to the abutted container; A container transport device comprising:
The conveyor has a horizontal conveying surface;
The guide is provided perpendicular to the conveying surface of the conveyor, and has a lower guide portion disposed below the center of gravity of the container and an upper guide portion disposed above the center of gravity of the container. And
The container transporting device, wherein the upper guide part is arranged so that a gap is formed between the upper guide part and the container when the container comes into contact with the lower guide part.   The inclination angle with respect to the vertical direction of the container when the container is applied to the lower guide part and the upper guide part is 3 to 30% of the fall angle of the container. The container conveying apparatus of description.   3. The container transport device according to claim 1, wherein the width of the gap is determined based on a probability that the container contacts the upper guide portion of the guide.   The width | variety of the said clearance gap is 2-6 [mm], The container conveying apparatus in any one of Claims 1-3 characterized by the above-mentioned. The conveyor is
A double-row transport conveyor for transporting the containers in multiple rows;
A single-row high-speed conveyor that transports the containers in a single-row state at a higher speed than the double-row transport conveyor;
A single row conveyor provided between the downstream end of the double row conveyor and the upstream end of the single row high speed conveyor;
5. The guide according to claim 1, wherein the guide is provided in the entire range from the downstream end of the double-row transport conveyor to the upstream end of the single-row high-speed conveyor, or a part thereof. The container conveyance apparatus as described in.