JPS59118618A - Positioning device for conveyer - Google Patents

Abstract

PURPOSE:To use various conveyers and to facilitate correcting the position of weight cargo by alignment of a movable table in the above device where the movable table capable of moving in the direction orthogonal to the feed direction is provided with a feed conveyer. CONSTITUTION:When a pallet 16 is lowered to a position indicated by a solid line, detection light of the second photoelectric detector 21 is intercepted to operate a relay not shown, so that a driving motor 31 for chain conveyers 11, 12 is driven to convey the pallet 16 to a conveyer 13. When detection light of the first photoelectric detector 20 is intercepted, the motor 31 is stopped to stop the chain conveyers 11, 12. At this time, if the center of the pallet 16 is not aligned with the center of the conveyer 13 and the chain conveyers 11, 12, either of switch levers 25, 26 is not operated and a motor 7 is rotated forward and backward through the operation of a relay not shown, so that a rod 8 is advanced and retreated to move a movable table 5 orthogonally to the going direction to correct a slippage. In this arrangement, the correction of position can be facilitated.

Description

[Detailed description of the invention] Field of application of the invention] The present invention relates to a conveyor positioning device.

[Prior art] When a load transported by a forklift is unloaded onto a chain conveyor, if the grapes are not lowered to the set position on the chain conveyor, when the load is transferred to the next conveyor, the grapes may be placed in the center of the next conveyor. This results in the disadvantage that the load cannot be transferred. Therefore, conventionally, a stopper plate was used to push the load on the chain conveyor and move the load to the center of the conveyor. According to this method, the load is likely to be damaged due to the direct contact between the load and the conveyor during pushing.If the load is thick and heavy, it will not be possible to push it and the load will not be pushed into the center of the conveyor. There were some flaws that I couldn't move on from. In addition, the pushing method has the disadvantage that it is not versatile because it can only be used with roller conveyors that have a small amount of contact with the load.

[Purpose of the invention]

An object of the present invention is to provide an apparatus that can use many types of conveyors and that can easily adjust the position of even heavy objects.

[Summary of the invention]

The present invention is provided with a movable table movable in a direction perpendicular to the destination direction, and a conveyor installed on the movable table facing the destination direction.The conveyor is aligned with the center of the destination by moving the position of the conveyor. Afterwards, the goods can be sent out on a conveyor in the direction of the destination.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, of the support stands 2 and 3 fixed on the floor 1, a movable stand 5, which is movable with wheels 4, is mounted on the support stand 3. An end of a rod 8 of an electric cylindrical device IO that moves a rod 8 using an electric motor 7 is connected to a bracket 6 projecting downward from the moving table 5. The second electric cylinder device 10 is horizontally fixed and installed on the support base 2.

As shown in FIGS. 1 and 2, two chain conveyors 11 and 12 are installed on the top of the moving table 5, facing toward the conveyor 13.

At both left and right ends of the support stand 3, as shown in FIGS. 1 and 2, there are stands 14 with approximately the same brightness as the pallet 16, which is the load.
15 is fixed. On the top of this stand 14, a transmitter 17 including a photoelectric detector 1 and a photoelectric detector
．． A limit switch 18 and a transmitter 19 of the second photoelectric detector 21 are installed. Conveyor 1 is on stand 15.
Receiver Z2 of the first photoelectric detector (9) sequentially from the third side
+ 'II E soto switch prisoner and the second photoelectric detector 21 will be installed according to the year of reception. Each limit switch 18,
The switch lever 6.26 of Z3 projects horizontally towards the pallet 16. 1st. Second each photoelectric detection plate times, 21
The detection direction is set so that the detection light hits the pallets 16 on the chain conveyors 11 and 12.

As shown in FIG. 1, two strikers n and 28 are fixed to the rod 8 one after the other. This striker-n
A limit switch with a switch lever extending toward the support base 3 is fixed to the support base 3.

Similarly, a limit switch x whose switch lever extends toward the striker Z is fixed to the support base 3.

Each of these photoelectric detectors 20, 21 and mint switches 18, 23, 29, 3++ has a contact part built into the control circuit shown in FIG. control.

The operation of this embodiment will be explained below based on the control circuit shown in FIG.

When a forklift traveling on the floor 1 lowers the pallet 16 to the position indicated by the solid line in FIG. 1, the pallet 16 blocks the detection light beam of the second photoelectric detector 21 and
, ride on 12. Therefore, each normally open contact 21a, 21b of the second photoelectric detector 21 changes to the energized position. Therefore, the relay 32 becomes energized, and the relay 32 becomes energized.

Contact 32a, driven by 32, changes to the energized position. Therefore, the motor 31 for driving the chain conveyors 11 and 12 is driven, and the chain conveyors 11 and 12 send the food toward the conveyor 13. The sent gutter 16 blocks the detection light of the first photoelectric detector just before it transfers to the conveyor 13, so the permanent contact 20a of the first photoelectric detector goes to the energized position, and the first photoelectric detector The additional normally closed contact 20b changes to the de-energized position, thus relay 32
energization is cut off, and the contact 32a changes to the non-energized position.

Therefore, the motor 31 stops, and the chain conveyor 11,
12 stops, and the pallet 16 stops at the position indicated by the dotted line in FIG. At this point, both contacts 20a and 21a are in the energized position, so the relay is in the 1M and 1M state, and of the normally open contacts 33a and 33b driven by the relay, the contact 33a is in the energized position. Contact 33b changes to the de-energized position.

In this state, if the center of the pallet 16 coincides with the center line A that coincides with the center of the conveyor 13 and both chain conveyors 11 and 12, the pallet 16 will be Both switch levers 5.26
By simultaneously depressing , the normally closed contact 18a of the limit switch 18 and the normally closed contact 23b of the limit switch are changed to the non-energized position. Therefore, the drive relay for the switch that rotates the motor 7 in the forward direction and the drive relay for the switch that rotates the motor 7 in the reverse direction remain in a non-energized state. be. Therefore, the motor 7 is stopped and the moving table 5 remains stationary. In this way, when the center of the pallet 16 is aligned with the center of the conveyor 13, the moving table 5 does not move and the position of the pallet 16 is not adjusted. After that, press the manual switch to turn on the power, and each contact 20
The motor 31 is driven regardless of the motors b and 21b, and the chain conveyors II and 12 are driven. Therefore, the pallet 16 can be transferred onto the center line A of the conveyor 13.

Next, the pallet 16 is delivered from the forklift to the pallet 16.
When the center of the chain conveyor 11, 12 is shifted to the left from the center A of the conveyor 13, the pareso l-16 changes from the solid line display shown in FIG. 4 to the dotted line display, as described above. Chain conveyors 11 and 12 until the position of
The pallet 16 blocks the light from the first photoelectric detector and stops just before moving onto the conveyor 13. In this case, the center B of the pallet 16 is 4th from the center A by 0 dimension.
If it is off to the left as shown in the figure, the switch lever δ of the limit switch 18 will hit the pallet 16 and fall down, but the switch lever 1 of the limit switch O will not hit the pallet 16 and fall down. Therefore, the normally closed contact 18a of the limit switch 18 changes to the de-energized position, but
') The normally closed contact Z3a of the Soto Sochi prisoner is in the energized position. For this reason, relay A becomes de-energized and relay 37 becomes energized. Therefore, the relay 37 brings the reverse rotation switch 36 into the energized position, and the forward rotation switch remains in the non-energized position. Therefore, the motor 7 rotates in reverse, and the rod 8 protrudes from the main body side of the electric cylinder device 1O, pushing the movable table 5 to the right. For this reason, the moving platform 5 has wheels 4
Move smoothly to the right. Due to this movement effect, when the amount of movement i reaches dimension C, the centers B and A coincide.

When this matching condition occurs, the switch lever upper limit switch is pushed down until it performs a switching operation.

Also, a portion of one switch lever returns to its original neutral position, but the limit switch 18 does not return to the (JFF) state. Therefore, both contacts 18a and Z3a are located in the non-energized position. , the 4-volt power to the relay 37 is cut off, and the switch opens and becomes the non-energized position.Therefore, the motor 7 stops without rotating forward or reverse.After that, the manual switch is set to the 4-volt position. Then, the relay 32 becomes energized, the switch 32a changes to the energized position, and the motor 31 is driven.Therefore, the chain conveyor 11.

At 12, the pallet 16 is fed into the conveyor 13 with the center B of the pallet 16 aligned with the center A of the conveyor 13. When the pallet 16 is completely fed to the conveyor 13 in this way, the state in which the detection light of each photoelectric detection plate 21 is blocked by the pallet 16 is eliminated. For this reason, the normally open contacts 20a of each photoelectric detector 20, 21,
21a and 21b change to the de-energized position and the normally closed contacts 20
b changes to the energized position. Therefore, the power to the relay 33 is cut off, the normally 8 contact 33a is in the de-energized position, and the normally closed contact 33 is in the de-energized position.
a changes to the non-energized position, and the normally closed contact 33b changes to the energized position. At this point, since the rod 8 has protruded to the right in advance, the switch lever of the limit switch 4 has been pushed down by the striker γ, so the normal lJ contact 29a of the limit switch 4 changes to the energized position and the limit switch 30 The normally open contact 3IJa is in the de-energized position. Therefore, the relay 37 becomes energized and the relay 37 becomes energized.

Therefore, the forward rotation switch A is closed to the energized position by the relay iris, and the reverse rotation switch A is opened to the non-energized position. Therefore, the motor 7 is driven to rotate normally, the rod 8 is retracted to the left, and the movable table 5 is returned to its original position. When the moving table 5 is returned to its original position, the switch lever of the limit switch is disengaged from the striker 27 and returned to its original position. For this reason, the normally open contact pair a returns to the de-energized position and cuts off the energization to the relay 35. For this reason, the forward rotation switch adjusts to the non-energized position, and the motor 7 stops. In this way, the movable platform 5 is automatically returned to its original position so that it can receive the next pallet from the forklift.

Next, when the pallet 16 unloaded from the forklift shifts to the right and is placed on the chain conveyors 11 and 12, the second photoelectric detector 21 reacts and the normally open contact 21
a, 21b are closed and the chain conveyors 11, 1
2 to transport the pallet 16. When the pallet 16 is detected by the first photoelectric detector field due to the movement of the pallet 16, the normally closed contact 2fllb opens and the normally open contact 20a closes. Therefore, the chain conveyors 11 and 12 stop, and the pallet 16 stops just before it is about to start being transferred to the conveyor 13. Also, at this time, each contact 20a,
21a has closed and changed to the energized position, so relay 3
3 is operated, the normally open contact 33a is closed, the normally closed contact 33b is opened, and the pallet 16 is connected to the chain conveyor 11.

12, the switch lever of the limit switch n is depressed just before the pallet 16 is detected by the first photoelectric detector, and the other switch lever 6 is not depressed. For this reason, the normally closed contact Z3a is bent and is in the normal position, and the normally closed contact 18a is closed and in the energized position. Therefore, among the relays 37, the relay head is energized, the forward rotation switch is closed, and the motor 7 is driven to rotate in the forward direction. As a result, the rod 8 is pulled to the left by the motor 7, and the movable table 5 is moved to the left by the wheels 4. As a result of this movement, when the center B of the pallet 16 coincides with the center B of the conveyor 13, the switch lever 6 is pushed down due to the movement of the pallet 16 to the left, and the normally closed contact 18a is also opened to become a non-energized position. Therefore, the current to the relay 35 is cut off, the forward rotation switch is closed, and the motor 7 is stopped.

As a result, the movable table 5 comes to rest at a point where the centers of the pallet 16 and the container 713 coincide. After that, when the manual switch A is pressed to operate the relay 32, the motor 31 is driven and the pallet 16 is sent to the conveyor 13 side by the chain conveyor 11112 and transferred. When the transfer is completed, the pallet 16 is removed from the detection area of the first photoelectric detector, so the normally open contact 20a opens to cut off the power to the relay 33.
Contact &la is open and contact 33b is closed. At this time, the rod 8 has already been pulled in and moved to the left, causing a striker.

- When the switch lever of the limit switch 3II is pushed down, the normally open contact 29a is closed and changed to the energized position, while the normally open contact 29a remains closed. Therefore, among the relays 37, only the relay 37 is energized, the reverse rotation switch is closed, and the motor 7 is rotated in reverse.

By reversing the second motor 7, the rod 8 is pushed out to the right, and the movable table 5 returns to its original position. By returning to the original position, the switch lever on the limit switch chest is removed from the striker row, the relay 37 is de-energized, the reversing switch is opened and becomes the de-energized position, the motor 7 stops, and the movable base 5 returns to its original position. Return to position and stop.

In the embodiments described above, the centering of the pallet 16 to the mecon conveyor 13 and the return of the moving base of the centering work layer to its original location are performed automatically, so that no effort is required. In addition, a cylindrical device IO using an electric motor as a driving means for moving the wheels 4 is used to support the movement of the movable table 5, but the wheels 4
Instead of the slider, for example, a bed may be replaced with a travel motor that rotationally drives the wheels 4 as a moving drive means.

(Effects of the Invention) As described above, according to the present invention, since the load is not directly moved when aligning the center of the load with the center of the destination, the conveyor can be used as a means for moving the load in the direction of the destination. There are no restrictions on the type of load, and even heavy loads can be easily combined.

[Brief explanation of the drawing]

FIG. 1 is a top plan view of an apparatus according to an embodiment of the present invention;
The figure is a front elevation view of the apparatus shown in Fig. 1, Fig. 3 is a control circuit diagram of the apparatus shown in Fig. 1, and Fig. 4 shows the state when the load is shifted in the apparatus shown in Fig. 1. Top plan view shown, No. 5
The figure is a front elevational view of FIG. 4. 1... Floor, 4... Wheels, 5... Moving platform, 7
, 31... Motor, 8... Rod, lO
...Electric cylinder system fil, 11, 12.
...Chain conveyor, 13...Conveyor, 1
6... Pallet, addition... First photoelectric detector, 21... Second photoelectric detector, 18, Z3
, 29 , 30...UE tsisochi, 27
．． 28...Striker Sai/a Sai 3 figure

Claims (1)

[Claims] 1. A conveyor positioning device comprising a moving table movably installed in a direction orthogonal to the destination direction, and a conveyor installed on the correction moving table facing the destination direction.