JPS6129290B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for transporting cargo, such as cement bags and grain bags, which have slight differences in individual dimensions and are subject to plastic deformation, in a limited space such as a container, freight car, or truck. Regarding the conveyance device for supplying items side by side, the purpose is to achieve sufficient labor savings while simplifying the configuration, to enable as many items as possible to be placed side by side in a limited space, and to ensure that the items do not overlap each other. The point is to ensure that overlapping and cluttered conditions can be avoided.

The characteristic configuration of the present invention for achieving the above object is to align the unloading side end of the conveyor in a straight line on a horizontal plane in order to arrange a large number of plastically deformable loads in a row in the horizontal direction. In the transport device, the transport device is provided with a drive mechanism for moving the load along the load supply device, and a load supply device that discharges the load at the unloading side end, further comprising means for detecting the presence or absence of the load to be discharged to the load supply device. At the same time, the drive mechanism is operated by setting an operating direction and an operating distance so as to move the unloading side end of the conveyor along a straight line on a horizontal plane by a distance equivalent to a preset width of the load. operation of the drive mechanism and the load supply device so that the load release operation upon detecting the presence of the load and the movement of the unloading side end by a distance equivalent to the load width are alternately repeated; A control mechanism is provided to perform control for setting the order, and the load supply device is further configured to cause the load size of the load to approach the load width equivalent distance prior to load release in accordance with a command from the control mechanism. , a mechanism for automatically clamping the baggage is provided, and this configuration provides the following effects.

In other words, the dimensionally different or deformed cargo is corrected in at least one horizontal dimension to a predetermined value using clamping pressure before being discharged. By approximating the target travel distance, human operations for conveyor movement are not required, and the automatic conveyor movement configuration can be simplified as much as possible to achieve sufficient labor savings, and the conveyor movement distance can be set to the minimum necessary. It has become possible to arrange as many items as possible side by side in a limited space, and to ensure that items do not overlap each other, allowing for orderly arrangement of items.

Next, embodiments of the present invention will be described in detail based on the drawings.

For example, baggage A that has slight differences in individual dimensions and is plastically deformed, such as cement bags and grain bags.
The transport and transport for arranging them three-dimensionally from a predetermined accumulation position in the container 2 on the freight car 1 is carried out in horizontal two-dimensional directions Y, Z in front, back, left and right with respect to the support stand 3 that moves in parallel in the vertical direction The main conveyor 4 moves parallel to
, the predetermined baggage accumulation position and the main conveyor 4.
It is comprised of an auxiliary conveyor 5 that spans the conveyance start end side of the conveyance start end side and swings in the left-right direction Z around the conveyance start end side.

As shown in FIG. 2, a pit 6 is formed at the end of the lead-in rail of the freight car 1, and a pit 6 is formed between the brackets 7, 7 provided in the pit 6 and the support base 3. 3 as a link member, and two sets of parallel quadruple link mechanisms 8 sharing one link 8a are connected so as to be bendable around the horizontal axis in the left-right direction Z, and expand and contract in the direction of the vertical axis. A fluid pressure cylinder 9 is interposed between the pit foundation and the support base 3, so that the support base 3 can be moved in parallel in the vertical direction X.

As shown in FIGS. 1 and 3, a pair of rails 10, 10 are laid in the left-right direction Z of the support base 3, and a guide member 1 straddles the rails 10, 10.
1 and 11 on the pedestal 12, and this pedestal 1
2 and the support base 3, a fluid pressure cylinder 13... which expands and contracts in the left-right direction Z is interposed, so that the pedestal 12 can be moved in parallel in the left-right direction Z with respect to the support base 3. It has been done.

As shown in FIGS. 3 and 5 to 7, the main conveyor 4 has a box-shaped frame 14a with U-shaped members 14b, 14b attached to both sides in the longitudinal direction to form a frame 14. An idle roller 15 is provided at one end of the frame 14, and a roller 1 driven by a geared motor 16 is provided at the other end.
7 and two idle rollers 18a, 18b, and each roller 15, 17, 18a, 1
An endless belt 19 is wound around the frame 14, and a plurality of belt receiving rollers 20 are placed at the bottom of the frame 14, and a pair of rollers 21 are placed at the top of the frame to lift and tilt both sides of the belt 19. It is configured by providing a plurality of.

The main conveyor 4 is moved parallel to the pedestal 12 in the conveyance direction, and the main conveyor 4 as a whole is moved in the three-dimensional direction
In order to be able to move in parallel in Y and Z, as shown in FIG.
2a and 12a, a roller pair 2 consisting of a roller that rotates around the horizontal axis and a roller that rotates around the vertical axis.
2... are provided at intervals in the longitudinal direction of the frame and in rolling contact with the U-shaped members 14b, 14b, and the chains 23 are connected at both ends in the longitudinal direction of the U-shaped member 14b. Two idle rollers 24, 24, which are stretched in a fixed state and sandwich this chain 23 from above and below, and a roller 26 driven by a drive mechanism.
is attached to the pedestal wall 12a, so that the main conveyor 4 can be moved in parallel in the front-rear direction Y in a cantilevered state.

The auxiliary conveyor 5 has a saddle-shaped bracket 30 erected at a predetermined baggage accumulation position, and a frame 31 that is rotatable around the vertical axis with respect to the bracket 30.
is provided, and this frame 31 and the above-mentioned vertical direction
The mount 12 moves parallel to the frame 3.
A roller 34 driven by a geared motor 33 is provided on one pedestal 31 side, and an idle roller 35 is provided on the other pedestal 12 side so as to be rotatable around a horizontal horizontal axis.
As shown in FIG. It is composed of a member 38 that regulates the position in the left-right direction Z, and a frame mounting member 39 that rotates relative to this member 38 around a vertical axis, so that it follows the movement of the main conveyor 4 in the left-right direction Z. , swings in the left-right direction Z around the conveyance start end side, and due to the rocking, the relative posture of the cargo supply between the conveyance start end side of the main conveyor 4 and the conveyance end side of the auxiliary conveyor 5 is in the left-right direction Z. It is structured so that it does not change significantly. In other words, when the auxiliary conveyor 5 supplies a load to the transport start end of the main conveyor 4 from a fixed position, the load can be supplied to the auxiliary conveyor 5 at a fixed position regardless of the movement of the main conveyor 4, and the auxiliary conveyor 5 The structure is such that the cargo A can be supplied to the conveyance starting end regardless of the position change due to the swinging of the carrier.

A baggage supply device 40 is provided at the transport end of the main conveyor 4.

As shown in FIG. 5, this baggage supply device 40 includes a mechanism 41 that receives the baggage A fed from the conveyance terminal end and drops and supplies the baggage A, and a mechanism 41 that receives the baggage A supplied to this mechanism 41 before and after the supply. A clamping mechanism 4 that clamps in the direction Y and corrects the dimensions to a predetermined size.
2, the supply mechanism 41 is configured to move a frame 44 equipped with a cargo receiving plate 43 into and out of the main conveyor transport end in the transport direction by a cylinder 45; The pressure mechanism 42 includes a cylinder 48 provided on a frame 47 having a clamping pressure plate 46, and a backing plate 49 having a surface perpendicular to the conveyance direction of the main conveyor. is connected to the conveyor frame 14, and by means of a distance drive that is directly opposite to the abutment plate 49 of the clamping plate 46, the load A on the receiving plate 43 is clamped in the main conveyor conveyance direction, and The dimensions are automatically corrected as shown in FIG. The structure is such that the operations are repeated intermittently in sequence.

That is, as shown in FIG. 8A, when a package A is supplied onto the receiving plate 43, a detection mechanism 52 including a limit switch or a pressure sensitive element detects the supply of the package, and based on this detection result, the same As shown in Figure B, the clamping mechanism 42 operates by a preset distance equivalent to the width of the load to correct the load A to a predetermined dimension L, and then, as shown in Figure C, the clamping mechanism 42 operates. The receiving plate 43 is retracted and the baggage A is dropped and released, and while the baggage A is being released, the conveyor 4 moves a distance corresponding to the preset baggage correction dimension l, as shown in FIG. , and at the same time, the supply mechanism 41 and the clamping mechanism 4
2 operates in the opposite manner to that described above, and is automatically controlled to prepare for the next load release. Note that the travel distance of the conveyor 4 and the clamping device 42 is changed based on the shape of the target baggage A.

To intermittently supply the cargo A to the receiving plate 43,
Compared to the time required to artificially supply the baggage A to the auxiliary conveyor 5, the time required for the baggage supply device 40 to discharge the baggage is shorter, so the load A can be transferred from the conveyor 4 to the receiving plate 43 using this time. Intermittent supply is possible, but auxiliary conveyor 5 or main conveyor 4
It is also good to drive it intermittently.

Drive mechanisms 9, 13, 17 for each part using fluid pressure cylinders and motors in the above-mentioned load carrying device,
25, 33, 45, and 48 are configured to automatically operate sequentially as described below by a program control mechanism (not shown).

That is, a first counter counts the number n of loads that can be placed in the front-back direction Y with respect to the container 2, a second counter counts the number n ₁ of loads in the left-right direction Y, and a second counter counts the number n of loads in the vertical direction X. A third counter for ₂ is provided, and when the first counter detects the quantity n and discharge of the load is completed, the main conveyor 4 is moved by a predetermined load width dimension l ₁ .
is moved in the left-right direction Z, the conveyance direction of the conveyor 4 is reversed, the first counter is reset to start counting anew, and the number of changes in the load supply row at that time is set by the second counter. By repeating this, the first counter detects the quantity n, the second counter detects the quantity _n1 , and at the time when the load discharge is completed, only the number corresponding to the predetermined thickness _l2 of the load is detected. While raising the conveyor 4 and resetting the second counter to start counting anew,
The number of times the cargo stacking is changed at that time is counted by a third counter, and by repeating these steps, the three counters detect the quantities n, n ₁ , n ₂ respectively, and the cargo discharge is completed. In this case, the detection results of the three counters are input into the program control to automatically control the conveyors 4 and 5 to stop driving and return the conveyor 4 to the starting position for supplying goods. As shown in FIG. 9, the movement trajectory B of the unloading side end of the conveyor 4 is programmed to be a zigzag trajectory in a horizontal plane, and the zigzag trajectory is reversed in the upper and lower adjacent stages. .

It should be noted that if the above-mentioned movement trajectory B is drawn at the end of the unloading side of the conveyor 4, the overall movement distance will be reduced, which is advantageous in terms of power and time. Even if it is only a two-dimensional parallel movement within a plane, it is sufficiently practical in cases such as arranging large items side by side in a horizontal plane, or arranging items side by side in a vertical plane in a limited space. That is, as the movement locus B of the unloading side end of the conveyor, a zigzag locus is drawn in the left-right direction Z in a horizontal plane, or a zigzag locus is drawn in the left-right direction Z or the vertical direction X in a vertical plane. Furthermore, various modifications can be made, such as setting the zigzag loci of the upper and lower descending stages and the front and rear adjacent stages so that they are in a retrograde relationship or a prograde relationship.

Furthermore, by supporting the main conveyor 4 on one side, there is no restriction on the order in which loads are supplied to a predetermined loading location, which is advantageous, but it is possible to change the structure to supporting the main conveyor 4 on both sides. Also good.

[Brief explanation of the drawing]

The drawings show an embodiment of the conveying device according to the invention,
Figure 1 is an overall plan view, Figure 2 is an overall side view, and Figure 3 is an overall plan view.
The figure is a detailed view of the support part, and Figure 4 is the - of Figure 3.
5 is a detailed view of the baggage supply device portion; FIGS. 6 and 7 are sectional views taken along lines - and - of FIG. 5; FIGS. The figure is a schematic perspective view showing a movement trajectory. 4... Conveyor, 25... Drive mechanism, 40...
Baggage supply device, 42... Clamping mechanism, A... Baggage,
l...Distance equivalent to load width.

Claims (1)

[Claims] 1. A drive mechanism 25 that moves the unloading side end of the conveyor 4 along a straight line on a horizontal plane in order to horizontally arrange a large number of plastically deformable loads A in a row. and a load supplying device 40 for discharging the load A at the unloading side end, wherein the load supplying device 40 is provided with means for detecting the presence or absence of the load A to be discharged. At the same time, the drive mechanism 25 is operated by setting the operating direction and the operating distance so that the end of the unloading side of the conveyor 4 is moved along a straight line on a horizontal plane by a preset distance l corresponding to the load width. The drive mechanism 25 and the load supply are controlled so that the activation control, the load release operation upon detection of the presence of the load A, and the movement of the unloading side end by a distance l equivalent to the load width are alternately repeated. A control mechanism is provided for controlling the order of operation with the device 40, and the load supply device 40 is further provided with a control mechanism that controls the load size of the load A prior to load release in accordance with a command from the control mechanism. A transport device characterized by being provided with a mechanism 42 that automatically clamps the load A so that the load A approaches a width equivalent distance l. 2. The conveying device according to claim 1, wherein the direction of movement of the conveyor and the direction of the load clamping pressure are configured in the longitudinal direction of the conveyor.