JP4878588B2 - Synthetic resin transport tool for moving conveyor lines - Google Patents

Description

  The present invention relates to a synthetic resin carrying tool such as a carrying container, a pallet, a tray or the like suitable for moving on a conveyor line such as a roller conveyor or a belt conveyor on which an object to be conveyed is placed.

  In factory production lines, baggage collection and delivery centers, etc., objects to be transported are placed, and in order to move them in a line on the conveyor line, synthetic resin transport tools such as transport containers, pallets, trays, etc. are used. As is well known, it is frequently used. In general, the conveyor line is provided with a stopper that can be moved in and out at an appropriate position, and the conveying tool on the conveyor line is stopped at a predetermined position as necessary by protruding the stopper above the conveying surface. I am trying to do it.

In the box-shaped synthetic resin container described in Patent Document 1 below, a rib-like flange projecting outward in the horizontal direction is formed at the lower end of the side wall panel, as shown in FIG. The flange is provided with a semi-circular cutout hole as a line-corresponding locating mechanism, and the synthetic resin container can be stopped by inserting the stopper into the cutout hole.
Further, in the synthetic resin pallet described in Patent Document 2 below, a protrusion is formed on the lower spar so as to be flush with the outer peripheral surface of the pallet, and a stop lever (stopper) is brought into contact with the protrusion. In this way, the pallet is stopped.
Utility Model Registration No. 2573268 Japanese Patent No. 3470433

By the way, the conventional synthetic resin transport container is in a situation where a plurality of transport containers b to e are arranged in a line on the roller conveyor a and moved in the direction of the arrow h as shown in FIG. Then, the stopper f is projected from the transport surface of the roller conveyor a between the first transport container b and the next transport container c, and as shown in FIG. When only the container b is to be moved away from the subsequent transport containers c to e, the stopper f is extremely high so as to protrude just into the gap g between the transport container b and the transport container c. The stopper f must be protruded with accurate timing. For this reason, it is necessary to accurately measure the moving position of the transport container, and high accuracy is required as a device for moving the stopper f in and out, and control becomes more difficult when moved at a high speed. There was a problem that increased.
It should be noted that if the transport containers are moved in advance with an interval, such a problem will not occur. However, if the intervals are increased, the number of transport containers that can be loaded on one conveyor line is reduced. Is damaged.

  On the other hand, even in the synthetic resin container shown in Patent Document 1, the above-described separation cannot be performed unless the stopper is protruded in a semicircular cutout in a timely manner. In the case of plastic pallets that have been moved, when the pallets are moved adjacent to each other on the conveyor, the protruding parts of the adjacent pallets come into contact with each other, so a stop lever (stopper) is inserted when the above-mentioned separation is attempted. There is a problem that there is no gap that can be made.

  SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problem, and the conveyor device made of synthetic resin for moving a conveyor line according to claim 1 is a flat, substantially rectangular synthetic resin on which an object to be conveyed is placed and moved on the conveyor line. It is a transporting tool, and a straight relief groove parallel to the moving direction is formed on the bottom wall lower surface so as to be continuous from one side to the middle of the transport tool, from the conveyor line to the bottom wall lower surface of the transport tool. A stopper projecting toward the end can be accommodated in the escape groove.

According to a second aspect of the present invention, in the synthetic resin carrying tool for moving a conveyor line, the reinforcing ribs are formed in a lattice shape on the bottom surface of the bottom wall, and the height of the reinforcing ribs is partially reduced. Thus, the relief groove according to claim 1 is formed.
According to a third aspect of the present invention, in the synthetic resin transporting tool for moving a conveyor line, four relief grooves are formed on the bottom wall lower surface in a symmetrical shape with the center point of the bottom wall lower surface being point-symmetric. It is characterized by.

According to the synthetic resin carrying tool for moving a conveyor line according to the first aspect, the carrying tool can be moved and stopped accurately even when the timing of protruding the stopper is not strict. For this reason, the installation cost of the apparatus for moving and stopping the carrying tool is greatly reduced.
According to the conveyer moving tool for conveyor line movement described in claim 2, the relief groove can be formed without impairing the mechanical strength of the bottom wall.
In the invention described in claim 3, even if the moving direction of the carrying device for moving the conveyor line is not aligned in one direction, any one of the four escape grooves is opposed to the stopper, so that the carrying device is more It can be moved and stopped freely.

  Next, an embodiment of a synthetic resin transporting tool for moving a conveyor line according to the present invention will be described with reference to the drawings for a synthetic resin transporting container. 1 is a perspective view of a synthetic resin transport container according to the present invention that is injection-molded with plastic, FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a perspective view of the lower surface of the synthetic resin transport container, and FIG. It is a top view of the lower surface of this synthetic resin transport container. This synthetic resin transport container is a substantially rectangular parallelepiped (square in plan view) container having an open top surface composed of the opposite side walls 1a and 1b, the opposite side walls 2a and 2b, and the bottom wall 3. An upper flange 4 comprising a first lateral rib 4a, a second lateral rib 4b, and a longitudinal rib 4c connecting the lateral ribs 4a, 4b projecting outward is integrally formed at the upper part of the side wall. Then, the lower second lateral rib 4b is formed into a substantially / ￣ shape when viewed from the front, so that the lower surface of the upper flange 4 is formed into a slanted undulating surface having a substantially / ￣ shape when viewed from the front.

  Further, lower lateral ribs 5a projecting outward are formed at the lower portions of the respective side walls of the transport container, and trapezoidal blocks 5b projecting outward are formed at the lower outer surfaces of the four corners of the transport container. As a result, the lower flange 5 whose upper surface is a substantially undulated undulated surface in a front view is formed. 6, 6, 6... Are reinforcing vertical ribs formed on the outer surface of the four corners of the transport container lower than the lateral ribs 4 a and 4 b and the trapezoidal block 5 b. For this reason, the recessed part 7 is formed in the outer surface of each side wall between the upper flange 4 and the lower flange 5, respectively. As shown in FIG. 3, the trapezoidal block 5b is opened at the bottom, and reinforcing ribs 5d are formed inside the trapezoidal block 5b.

Further, the bottom wall 3 is formed in a lattice shape by forming reinforcing ribs 9 having a height of about 13 mm vertically and horizontally on the lower surface so that a desired strength can be obtained and friction with the ground or the like during transportation. Thus, even if the reinforcing rib 9 is somewhat worn, sufficient strength is maintained and durability is increased.
Further, by partially lowering the height of the reinforcing rib 9 (about 6 mm), four straight relief grooves that are continuous from one side of the carrying device to the middle on the lower surface of the bottom wall, respectively. 10a to 10d are formed in a symmetrical shape with the center point 11 of the bottom wall lower surface being point symmetric. For this reason, the relief grooves 10a to 10d having a depth D of about 7 mm are formed on the lower surface of the transport container so as to be continuous from one side to the middle. In FIG. 4, hatched lines are added to make it easy to see the portions where the escape grooves 10a to 10d are formed.

As shown in FIG. 5 (a), the transport containers 12a to 12d configured in this way are arranged in a line on the roller conveyor 13 and moved in the direction of arrow E. As shown in FIG. When only the leading transport container 12a is to be moved away from the subsequent transport container 12b, even if the stopper 14 protrudes into the relief groove 10a of the leading transport container 12a, the stopper 14 As shown in FIG. 5B, the transport container 12a moves as it is without engaging with the transport container 12a, and the subsequent transport container 12b hits the stopper 14 and stops. For this reason, if the stopper 14 protrudes while the range indicated by the symbol G in FIG. 5 (a) passes, the leading transport container 12a does not stop, and the subsequent transport container 12b stops. Can do. Since the relief groove 10a is formed in this way, the timing for projecting the stopper 14 does not have to be as strict as in the prior art, and therefore high-precision control for moving and measuring the transport container is not required. Accordingly, the use of the transport containers 12a to 12d greatly reduces the installation cost of the apparatus for moving and stopping as described above.
Since the relief grooves 10a to 10d are formed so as to be continuous from one side to the middle of the transport container, the movement direction of the transport container is opposite to the case shown in FIG. When the stopper 14 comes into contact with the end of the escape groove, the carrying container is stopped.

Further, in the transport container shown in this embodiment, the four escape grooves 10a to 10d are formed symmetrically with the center point 11 of the bottom surface of the bottom wall being symmetrical with respect to the point, so that the moving direction is not aligned to one side. As described above, the transport container can be freely moved and stopped by the stopper 14 as described above.
Note that the number of escape grooves can be increased or decreased as necessary.If there is only one movement direction, only one escape groove may be provided, and a plurality of stoppers may be provided to maintain balance during stoppage. A plurality of relief grooves may be formed in parallel on the lower surface of the container so as to face the stopper.

  FIG. 6 shows a holding arm serving as a holding means for the carrying container. The holding arm 15 is formed so that a pair of arms 15a and 15b are U-shaped in a plan view at the distal end portion of the base portion 16, and the arms can be inserted into the concave portion 7 from one direction of the outer surface of the transport container. The upper surface of the holding arm 15 is formed into a substantially / ￣-shaped undulation that fits loosely on the oblique undulation surface of the upper flange 4, and the lower surface of the holding arm 15 By forming the undulation in the shape of __, the upper surface of the holding arm comes into contact with the inclined undulating surface of the lower surface of the upper flange 4, and the conveying container is displaced along the inclined undulating surface. The container is always accurately positioned with respect to the holding arm, and can be stably held without sliding down due to vibration or impact during transportation.

  In addition, since the lower rib 5 is formed by the trapezoidal block 5b in this transport container, the reinforcing ribs can be prevented from appearing on the surface. Therefore, when the transport containers are arranged side by side, they are lifted up. Sometimes the ribs get caught in each other and do not hinder lifting. Reference numeral 8 shown in FIG. 1 is a through hole formed on the upper surface of the trapezoidal block 5b, and is located on the side with the mold member positioned below in FIG. 1 when the container for transportation is injection molded. By connecting the mold member through the through-hole 8 when the mold is closed, both mold positions are stably positioned.

  The present invention can be applied to pallets, trays and the like on which objects to be transported are moved in order to move a conveyor line in addition to the transport containers shown as the embodiment. The automation and rationalization of logistics at collection and delivery centers will be greatly promoted.

The perspective view of the container for conveyance which shows embodiment of this invention. The longitudinal cross-sectional view of the container for conveyance of FIG. The perspective view of the lower surface of the container for conveyance of FIG. The top view of the lower surface of the container for conveyance of FIG. The side view which shows the movement condition on the conveyor line of the container for conveyance which shows embodiment of this invention. The perspective view which shows the container for conveyance which shows embodiment of this invention, and its holding | maintenance arm. The side view which shows the movement condition on the conveyor line of the conventional container for conveyance.

Explanation of symbols

3 Bottom Wall 9 Reinforcing Rib 10a to 10d Relief Groove 11 Center Point 12a to 12d Transport Container 13 Roller Conveyor 14 Stopper

Claims (3)

  A flat, substantially rectangular, synthetic resin transporting device on which the object to be transported is placed and moved on the conveyor line so that a straight relief groove is continuously formed from one side of the transporting device to the middle on the bottom surface of the bottom wall. A synthetic resin carrying tool for moving a conveyor line, characterized in that a stopper that is formed and protrudes from the conveyor line toward the bottom surface of the bottom wall of the carrying tool can be accommodated in the escape groove.   2. A conveyor line moving device according to claim 1, wherein the reinforcing ribs are formed in a lattice shape on the bottom wall lower surface, and the relief grooves according to claim 1 are formed by partially reducing the height of the reinforcing ribs. Synthetic resin transport tool.   The synthetic resin transport tool for moving a conveyor line according to claim 1 or 2, wherein four relief grooves are formed in the bottom wall lower surface in a symmetrical shape with the center point of the bottom wall lower surface being point symmetric.

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