JPH0445790Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a parallel assembly device that assembles the same type of products using a plurality of unit assembly devices and transports the products through the same pallet circulation path.

[Background technology]

Conventionally, this type of parallel assembly apparatus has been constructed as shown in FIG. In other words, products are transferred individually from multiple unit assembly devices A ₁ ′ to A _o ′ installed in parallel.
B ₁ ′ to B _o ′, and transfer this to the collective transfer route 102
The data are collected and sent to the inspection device 103. The inspection device 103 rejects defective products to a defective product transfer route 105 and allows non-defective products to pass to a non-defective product transfer route 104.
Good product transfer route 104 and defective product transfer route 105
On the way, the good products and defective products are taken out from the pallet 101 by the non-defective product take-out means 110 and the defective product take-out means 111, respectively, and the empty pallet 10 is removed.
1 to the individual transfer paths B ₁ ′ to B _o ′.

According to this conventional device, defective products are detected by the inspection device 103.
The defective product can be detected and removed by the defective product removal means 111.

However, there is a problem in that it is not known which unit assembly apparatus A ₁ ' to A _o ' produced the defective product. The unit assembly devices A ₁ ′ to A _o ′ that produced defective products have a high probability of producing defective products in the next stroke as well, so they must be adjusted immediately. However, with the device shown in Figure 5, it is not clear which unit assembly devices A ₁ ′ to A _o ′ require adjustment, and all assembly devices A ₁ ′ to _{A o} ′ need to be adjusted. takes too much time.

[Purpose of invention]

The purpose of this invention is to provide a parallel assembly device in which it can be immediately determined which unit assembly device of a plurality of parallel assembly devices has produced a defective product.

[Disclosure of invention]

The parallel assembly device of this invention includes a plurality of pallets with identification codes attached thereto, and a plurality of unit assembly devices each having an individual transfer path for loading and carrying out the assembled products arranged in parallel to each other on the pallets. A collective transport route in which the terminal ends of each of the individual transport routes are sequentially connected and each pallet carried out from the individual transport route is arranged in tandem according to the arrangement order of the unit assembly devices, and a collective transport route is provided at the terminal end of the collective transport route. an inspection device that detects abnormalities in products; a non-defective product transfer route that branches off from this inspection device to convey pallets loaded with good products and defective products, and sends empty pallets to each of the individual transfer routes; a transfer path, a start signal output means for outputting a start signal upon detecting that each of the unit assembly devices has completed assembly, and blocking transfer in the collective transfer path and responding to the start signal. a gate means for releasing the pallet; and a first gate means for reading the recognition code of the pallet on the downstream side of the gate means in the conveying direction.
a second reader provided on at least one of the non-defective product transfer route and the defective product transfer route to read the recognition code of the pallet; It has a storage unit that sequentially reads the recognition codes of the pallets passing through the reader and stores the recognition codes in correspondence with the input order, and determines which unit assembly device has an abnormality based on the signal from the second reader. and a determination device for determining.

According to the configuration of this invention, the product transfer by the collective transfer means is stopped by the gate means until each unit assembly device finishes assembling all the products, and the gate means is activated by the start signal generated when all the assemblies are completed. Since it is opened, the products assembled by each unit assembly device are carried out in a state in which they are arranged in the order of arrangement of the unit assembly device. Therefore, by sequentially reading the recognition codes of the pallets at this time with the first reader and storing them in the storage section, the arrangement order of the unit assembly devices and the input order of the recognition codes in the storage section are made to correspond. Therefore, after inspection, by reading the recognition code of the pallet on the non-defective product transfer route or the defective product transfer route and comparing this with the input order read by the first reader using the judgment device, it is possible to determine whether any unit assembly equipment is abnormal. You can immediately see what has happened.

In addition, since the recognition code of the pallet is associated with the arrangement order of the unit assembly device when it is read by the first reader, even if the order of the pallet flow is changed after that, when it is read by the second reader It becomes possible to associate the recognition code of the pallet with the unit assembly device. Therefore, by installing a plurality of inspection devices, it is possible to create a line in which the flow order of pallets changes, increasing the degree of freedom in line configuration.

Embodiment An embodiment of this invention is shown in FIGS. 1 to 4. This parallel assembly device consists of a plurality of pallets 1 with identification codes attached, and a plurality of units having individual transfer paths B ₁ to _{B o} for carrying out the assembled products placed on the pallets 1, which are placed in parallel with each other. Assembly device A ₁ ~
A _o and the ends of each individual transfer path B ₁ to _{B o} are sequentially connected, and each pallet 1 carried out from the individual transfer path B ₁ to _{B o} is arranged in the order of unit assembly devices A ₁ to _{A o} . A collection transfer path 2 arranged in tandem, an inspection device 3 installed at the end of the collection transfer path 2 to detect abnormalities in the products, and a test device 3 branching off from the inspection device 3 to carry non-defective products and defective products, respectively. The loaded pallet 1 is transported and the empty pallet 1 is transported to each individual transport path B ₁ ~
A transfer route 4 for good products and a transfer route 5 for defective products to be sent to B _o , a start signal output means 6 for detecting that each unit assembly device A ₁ to A _o has completed assembly and outputting a start signal, and a collective transfer A gate means 7 that prevents transport on the path 2 and releases the inhibition of transport in response to a start signal, and a first reader 12 that reads the recognition code of the pallet 1 on the downstream side of the gate means 7 in the transport direction. A second reader 13 on the non-defective side and a second reader 14 on the defective side are provided on at least one of the non-defective product transfer route 4 and the defective product transfer route 5 to read the recognition code of the pallet 1, and a second reader 14 on the non-defective product side is provided on at least one of the non-defective product transfer route 4 and the defective product transfer route 5, and a second reader 14 on the non-defective product side is provided to read the recognition code of the pallet 1. The apparatuses _A1 to _Ao sequentially read the recognition codes of the pallet 1 passing through the first reader 12 in the order of arrangement. The system also includes a determination device 9 that determines which of the unit assembly devices A ₁ to A _o has experienced an abnormality based on the signals from the devices 13 and 14 . The tester 3 includes a plurality of unit testers 3.

The non-defective product transfer route 4 and the defective product transfer route 5 are provided with a non-defective product removal means 10 and a defective product removal unit 11. The start signal output means 6 is a unit assembly device
They are provided in a parallel group of A ₁ to A _o and connected to the determination device 9. A gate opening/closing signal is sent to the gate means 7 from the determining device 9. The collective transfer path 2 is composed of, for example, a belt conveyor, and the gate means 7 is a means for stopping the driving of the collective transfer path 3.

The determination device 9 consists of a computer, and display means such as a display CRT and a printer 15 are connected thereto. A tag card 16 is attached to the pallet 1 as shown in FIG. 3, and a unique recognition code is attached thereto. For example, a number from 1 to 999 is entered into the tag card 16 using a writing device connected to a keyboard 18 with a display as shown in FIG. 1st
The reader 12 and the second readers 13 and 14 are capable of reading the tag card 16 in a non-contact manner.

Operation First, I will explain the outline. Each unit assembly device A ₁ ~
A _o assembles parts sent from a parts supply device (not shown) and places them on pallets 1 on individual transfer routes B ₁ to _{B o} . The pallets 1 of the individual transfer paths B ₁ to _{B o} are sent to the detector 3 from the collective transfer path 2 . Here, the pallet 1 loaded with products determined to be non-defective passes through the non-defective product transfer path 4 as is, and is sent to the defective product transfer path 5 if an abnormality is detected. In the non-defective product transfer route 4 and the defective product transfer route 5, a non-defective product removal means 10 and a defective product removal unit 11 are provided.
The products are removed from the pallet 1 and the empty pallet 1 is sent to the individual transfer paths B ₁ to _Bo .

Next, detection of unit assembly devices A ₁ to A _o in which an abnormality has occurred will be explained. FIG. 4 is a flowchart of the operation of the determination device 9. (a) Product assembly and individual transfer routes for all unit assembly equipment A ₁ to _{A o}
When the supply of products to the pallets 1 on _B1 to _B0 is completed, a start signal is output from the start signal output means 6. The determination device 9 continues to wait for the start signal. (b) When the start signal is input, the determination device 9 clears the stored contents of the previous recognition code.
(c) Next, in order to start conveying the pallet 1, a gate open signal is sent from the determining device 9 to the gate means 7.
to open the gate means 7. (d) Palette 1
When the pallets arrive at the first reader 12 on the collective transport path 2, the first reader 12 reads the recognition code of the pallet 1 without contact and outputs the recognition code to the determination device 9. The determination device 9 associates the read data of the recognition code with the input order, that is, the order in which the read data of the recognition code is received from the start signal, and writes it into an area on the RAM. In this case, input order and unit assembly device A ₁ ~ _{A o}
The arrangement order of corresponds. (e) When the pallet 1 after passing through the inspection device 3 comes to the second reader 13 on the non-defective side and the second reader 14 on the defective side, each second reader 13 and 14 reads the recognition code of the pallet 1. is read and output to the determination device 9. (f) The determination device 9 determines the number of pallets 1 from the start signal using the recognition code on the RAM.
Search for Then, whether the identification code of palette 1 is normal or abnormal is displayed on the display CRT and printer 15. This allows the unit assembly devices A ₁ to A _o that require adjustment to be determined. (g) Judgment device 9
Then, it is checked whether the recognition code read by the second readers 13 and 14 is the recognition code of the last pallet 1 that passed through the first reader 12, and if they are different, the operation after opening the gate means 7 described above is performed. repeat. If it is the recognition code of the last pallet 1, it is determined that one process has been completed, and the gate means 7 is closed.

In this way, which unit assembly equipment is installed in parallel?
From A ₁ to A _o , you can immediately tell if a defective product has occurred.
Furthermore, when the first reader 12 reads the pallet 1, the recognition code of the pallet 1 is associated with the arrangement order of the unit assembly devices A ₁ to A _o , so even if the order of the flow of the pallet 1 is changed thereafter, second reader 13,
It becomes possible to associate the recognition code of the pallet 1 read at step 14 with the unit assembly devices A ₁ to A _o .
Therefore, by installing multiple inspection devices 3,
It is possible to create a line in which the flow order of the pallets 1 changes, increasing the degree of freedom in line configuration. Therefore, line performance can be improved.

In the above embodiment, both the second reader 13 on the non-defective side and the second reader 14 on the defective side are provided, but only one of them may be provided. Further, in the embodiment, from the start signal output means 6 to the determination device 9.
Although the opening/closing signal is sent to the gate means 7 via the gate means 7, the start opening signal from the start signal output means 6 may directly cause the gate means 7 to open the gate. Further, the start signal output means 6 is also used as the determination device 9, and the assembly end signals are sent from each unit assembly device _A1 to _Ao to the determination device 9 individually, and the start signal is output by the logical sum of the end signals. You can also do this.

[Effect of idea]

In the parallel assembly device of this invention, the product transfer by the collective transfer means is stopped by the gate means until each unit assembly device finishes assembling all the products, and the gate is activated by the start signal generated when all the assemblies are completed. Since the means is opened, the products assembled by each unit assembling device are carried out in a state in which they are arranged in the order of arrangement of the unit assembling device. Therefore,
By sequentially reading the recognition codes of the pallets at this time with the first reader and storing them in the storage section, the arrangement order of the unit assembly devices and the input order of the recognition codes in the storage section are made to correspond. Therefore, after inspection, by reading the recognition code of the pallet on the non-defective product transfer route or the defective product transfer route and comparing this with the input order read by the first reader using the judgment device, it is possible to determine whether any unit assembly equipment is abnormal. You can immediately see what has happened.

In addition, since the recognition code of the pallet is associated with the arrangement order of the unit assembly device when it is read by the first reader, even if the order of the pallet flow is changed after that, when it is read by the second reader It becomes possible to associate the recognition code of the pallet with the unit assembly device. Therefore, by installing a plurality of inspection devices, it is possible to create a line in which the order of flow of pallets changes, which has the effect of increasing the degree of freedom in line configuration.

[Brief explanation of the drawing]

Fig. 1 is an explanatory plan view of the configuration of an embodiment of this invention, Fig. 2 is an explanatory drawing of a writing device for a tag card attached to the pallet, Fig. 3 is an explanatory drawing of the tag card and pallet, and Fig. 3 is an explanatory drawing of the tag card and pallet. Similarly, FIG. 4 is a flowchart of the determination device, and FIG. 5 is a plan view of the conventional example. A ₁ ~ _{A o} ... Unit assembly device, B ₁ ~ B _o ... Individual transfer route, 1... Pallet, 2... Collective transfer route,
3...Detector, 4...Good product transfer route, 5...Defective product transfer route, 6...Start signal output means, 7...
... gate means, 9 ... determination device, 12 ... first reader, 13 ... second reader on non-defective side, 14 ... second reader on defective side.

Claims (1)

[Scope of utility model registration request] A plurality of unit assembly apparatuses each having a plurality of pallets with identification codes attached thereto, a plurality of unit assembly apparatuses arranged in parallel with each other and each having an individual transfer path for carrying out the assembled products on the pallet, and terminal ends of each of the individual transfer paths being connected in sequence. a collection transfer path in which the pallets transferred from the individual transfer paths are arranged in tandem according to the arrangement order of the unit assembly devices; and an inspection device installed at the end of the collection transfer path to detect abnormalities in the products. , a non-defective product transfer path and a defective product transfer path branching from the inspection device to transport pallets loaded with good products and defective products respectively and sending empty pallets to each of the individual transfer paths, and each of the unit assembly devices. a start signal output means for detecting that all the assemblies are completed and outputting a start signal; a gate means for blocking transfer on the collective transfer route and releasing the blockage of transfer in response to the start signal; and this gate means a first reader that reads the recognition code of the pallet on the downstream side in the conveyance direction; a second reader that is provided on at least one of the non-defective product transfer path and the defective product transfer path and reads the recognition code of the pallet;
a storage section for sequentially reading the recognition codes of the pallets passing through the first reader in the arrangement order of the unit assembly apparatus in response to the start signal and storing the recognition codes in correspondence with the input order; 2. A parallel assembly device comprising a determination device that determines in which unit assembly device an abnormality has occurred based on signals from two readers.