JPS6411533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a component arrangement device,
It is an object of the present invention to provide a device that automatically arranges a plurality of electric circuit components of a plurality of types in a predetermined order.

An automatic component insertion device is used as a device for inserting electric circuit components into mounting holes of a printed circuit board, but it is necessary to load the components to be inserted into this automatic component insertion device in accordance with the insertion order. conventionally
Using an NC device, a paper tape with pre-punched instructions was passed through the NC device, and the desired parts were sequentially picked up and lined up using the output of the NC device, but this configuration required an NC device and a tape reader. .

The present invention provides a simpler component arrangement device, and one embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a component detection work section, which is provided in contact with one end of a carrier 3 shaped like an endless belt. The component detection work unit 1 performs the work of holding the components placed on the carrier 3 and inserting them into the printed circuit board. The carrier 3 is intermittently moved by a carrier drive unit 10 using a motor 9 as a drive source, and the carrier operation signal generator 4 detects that the carrier 3 is intermittently driven, and outputs count pulses to the controller 11. It is applied to the control signal generator 5. The arithmetic control section 6 operates based on the setting state of the arrangement order setting section 7, drives the component detection work section 1 and the distributor drive section 8 according to the timing of the pulse applied from the control signal generation section 5, and performs the distribution. A plurality of distributors 2a, 2 are operated by the output of the distributor driver 8.
b, 2c, and 2d are driven to drop the parts onto the carrier 3.

One distributor is loaded with taped parts of the same type, and each distributor 2a, 2
Different types of parts are loaded in each of parts b, 2c, and 2d. With this device, parts can be automatically inserted directly onto the printed circuit board in the working section 1 after being lined up in the insertion order on the carrier 3.Until now, the parts have been arranged in the insertion order and re-taped, and then the parts can be automatically inserted. This eliminates the need for loading the machine and dramatically improves work efficiency.

Next, the operation of the apparatus of the present invention will be explained.
Now, with the types of parts A, B, C, and D, part D is loaded into the distributor 2a consisting of a cutter, part C is loaded into the distributor 2b, component B is loaded into the distributor 2c, and the parts are distributed. A case will be described in which parts A are loaded into the container 2d and these parts are arranged on the carrier 3 in the insertion order of A, C, B, and D as shown in FIG.

When the intermittent feeding interval of the carrier 3 and the arrangement interval of the distributors are the same, the arrangement progress of the parts is as shown in FIG. In FIG. 3, the arrow indicates that the distributor operates to cut one component and transfer the component onto the carrier 3, and the solid line frame indicates that the component is placed on the carrier 3. The dashed frame indicates the parts scheduled to be transferred onto the carrier 3. Areas with only frames and no component names are spaces, which represent the distinction of one cycle in the insertion order and are visually confirmable.

Note that one cycle is a cycle of repeating the arrangement order as shown in FIG. It is also an arrangement cycle of parts arranged in a fixed order.

In addition, the space is an "empty space" for checking whether the insertion cycle and the arrangement cycle are synchronized when receiving the arranged parts and automatically inserting the parts. In the example shown in the figure, after picking and inserting the part number 1, the carrier is fed one pitch, and at this time it is confirmed that there is no part. If there is no part, feed it again so that the part 4 at the beginning of the next insertion cycle is in the insertion/ejection section. If a part is missing during a normal insertion cycle, an error will occur. In this case, there may be cases where the carrier falls during the carrier, so it cannot be determined that the arrangement cycle is out of order. If the alignment is out of order, two parts will hit the same pitch on the carrier, but this confirmation space is for checking the synchronization of the insertion cycle and alignment cycle.

The control method of the present invention is a method in which the above-mentioned sequence progress is digitized and the result is arithmetic controlled.

In a fixed order array, the arrays in a fixed order flow in cycles, so it is sufficient to set the array order for one cycle in advance. moreover,
The arrangement passing under each distributor is also cyclic. Therefore, if the number of parts arranged per cycle is n, constant order arrangement control becomes possible by arithmetic control using the n-ary system.

Therefore, we have developed a method that assigns an array number from 0 to n to the array of one cycle, associates the component name corresponding to that array number with the number of the distributor that stores the component, converts it into a numerical value, and calculates and controls these values. was used.
The part numbers shown in the drawings are numbers expressed by associating the part name (product type) with the distributor number as described above.

FIG. 4 shows the sequence sequence shown in FIG. 3 using sequence numbers. If you look at this Figure 4, you can see the arrangement of n-ary numbers.

In this explanation, a case will be described in which the n-ary calculation control method is implemented using an n-ary counter.

4 corresponding to each distributor 2a, 2b, 2c, 2d
n-ary counters are provided, and each counter has a fourth
Set the numbers in the figure as initial values,
After that, each counter is incremented by a pulse synchronized with the feeding of carrier 3, and each time the carrier is fed, the output of each counter, that is, the array number and the divider value corresponding to the preset array number. A control circuit is configured to compare the numbers and operate the distributor only when they match.

Figure 4A is a diagram showing the correspondence between the numbering of distributors and the types of parts stored therein, and Figure 4B is a diagram in which the arrayed parts are digitized using distributor numbers, and the arrangement order is shown in the second diagram. In the case of doing as shown in the figure, the arrangement order setting section is programmed in advance as shown in FIG. 4C. That is, the settings are such that when the array number is 1, the distributor 4 is operated, when the array number is 2, the distributor 2 is operated, when the array number is 3, the distributor 3 is operated, and when the array number is 4, the distributor 1 is operated.

Furthermore, the array number 0 means an empty space between cycles, and since no part should exist, the part number is set to 0.

FIG. 4D shows a state in which parts are arranged by the above control means, and when ◎, the distributor operates,
The circle mark indicates the arrangement number of the transferred component. In this way, when the carrier feed number is 7, the parts are arranged in a fixed order on the carrier.

Next, the means for determining the initial value of each counter will be described.

To set the initial value of the counter, as shown in _FIG . When _R reaches the count number corresponding to the position of each distributor, the counting of each distributor counter is stopped.
At the mark in Fig. 5, that is, when CT ₁ stops counting, the distributor 1 is in position 4, so CT _R = 4.
Do it when. Similarly, when CT ₂ is CT _R = 5, CT ₃ is CT _R = 6, and CT ₄ is CT _R = 7, the count stops, and _CTR also stops when CT _R = 7, and then CT ₄ becomes 0. CT ₃ , CT ₂ ,
Make CT ₁ count. Meanwhile, _CTR has a count of 7.
Stop it as it is. This completes setting the initial value of the distributor counter. Next, the carrier is moved (marked), and thereafter each distributor counter is counted by a count pulse synchronized with the intermittent feeding of the carrier. Also, _CTR is subtracted and counted by this pulse. (mark) At this time, each distributor compares the count number of _CTR with the number P of each position of the distributor, and becomes operational from the time when the condition of Pj≧ _CTR is satisfied. This is a control to prevent missing parts in the initial arrangement cycle. In other words, when marked with ★ in "4" in Figure 5, CT ₁
= 4, so distributor 1 will operate, and part D will be transferred to the carrier and sent to the work section, but the other parts A, C, and B have not been transferred, so in the end, the cycle will end. Since only the last part will reach the work section, no work can be done.
For this reason, control is performed so that the work unit is always supplied with the component A in the arrangement order 1 in the first cycle of the arrangement.

Each distributor is thus ready for operation after passing through space 0 of the first alignment cycle after the carrier begins to be fed (below the diagonal line in FIG. 5).

The arrangement below the 〓 mark in Fig. 5 is the same as Fig. 4 D, and when ◎, the distributor operates, and the 〇 mark indicates the flow of transferred actual parts.

As described above, N-ary counters for the number of distributors and one position reference counter are provided, pulses synchronized with the movement of the carrier are counted, and the output of the counter and the number of counts each distributor should operate are calculated. Each distributor can be controlled while comparing, and a fixed order arrangement can be obtained.

In one example of this explanation, an n-ary counter is used, and this can be expressed numerically as follows.

The number of the distributor located farthest from the working part is m, the number of parts arranged in one cycle (including the space as number of parts 1) is n, the number of initial value corrections is k, and the number of parts under each distributor is Assuming that the array number CTj is the number of carrier feeds, t is the number of carrier feeds, and the number of positions of each distributor from the working part is Pj, am=remainder of Pm/n...(1) aj=remainder of Pj/n...(2) k=n−am ……(3) Remainder of CTj=1/n(aj+k+t)=(aj+k+t) _(o) ……(4) For example, each case of 〓 in Figure 5 The count number of the distributor can be calculated as follows using formulas 1 to 4.

a ₄ = P ₄ /n remainder P ₄ /n = 7/5 = 1...2 k = n - a ₄ = 5 - 2 = 3 t = 4 when marked 〓 CT ₄ = 2 + 3 + 4 = 9 = 4 (n) a ₃ =6/5...1=1 a ₂ =5/5...0=0 a ₁ =4/5...4=4 CT ₃ =1+3+4=8=3(n) CT ₂ = 0 + 3 + 4 = 7 = 2 (n) CT ₁ = 4 + 3 + 4 = 11 = 1 (n) CT ₄ = 4, CT ₃ = 3, CT ₂ = 2, CT ₁ = 1 are obtained, which match the values in Figure 5. .

Therefore, if the distributor is controlled while performing the above calculations, the same result as shown in FIG. 5 can be obtained.

As described above, according to the present invention, in a device that arranges multiple types of parts in a predetermined order, it is possible to use the same number of counters as parts distributors without using expensive NC equipment that uses tapes that record data. to detect the position of the carrier under the parts distributor,
When this position, the preset arrangement number, and the number of the parts distributor all match, the cutter is operated to place the parts on the carrier, and the parts are arranged in one cycle. By inserting a space to indicate the distinction between one cycle, it is possible to provide a component arrangement device that is simple, inexpensive, and allows the distinction between one cycle to be easily confirmed with the naked eye.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a parts arrangement device according to an embodiment of the present invention, FIG. 2 is a diagram showing the order of parts arrangement, FIG. 3 is a diagram showing the progress of parts arrangement, and FIGS. 4A, B, C, D is a diagram showing the encoding of component names loaded in a distributor, a diagram showing a state in which arrayed component names are digitized by distributor numbers, a diagram showing a component number and an array number, and a diagram showing a component array control method by a control means. diagram showing,
FIG. 5 is a diagram showing the state of the counter, and FIG. 6 is a state diagram showing one cycle. 1... Parts detection work section, 2... Parts distribution section, 3
...Carrier, 4...Carrier operation signal generation section,
5... Control signal generation section, 6... Arithmetic control section, 7...
...Sequence order setting section, 8...Distributor drive section.

Claims (1)

[Claims] 1. A plurality of parts distributors are provided on a carrier that moves intermittently, a plurality of parts of different types are loaded into each of the parts distributors, and the parts distributor is loaded with a plurality of parts by the operation of the parts distributor. A component distributor number is assigned for each arrangement number so that each loaded component is separated and transferred onto the carrier, and the plurality of types of components are arranged on the carrier in a desired order. a setting section for setting, a detection means for detecting movement of the carrier, a plurality of counters provided corresponding to each of the component distributors, and the plurality of counters are set in the setting section. (A+B) base counters are used as the number A of component distributor numbers and the number B of spaces, and initial values corresponding to component arrangement numbers are set in each of these counters according to the mounting position of the component distributor,
Counting carrier movement detection signals output from the detection means in accordance with the movement of the carrier,
If the count value matches the component distributor number preset in the setting section above and the array number where that number is set, the component is transferred to the carrier. When the distributor is activated and the last component among the multiple components is transferred onto the carrier, intermittent feeding is performed to create a space where no components are supplied, and after this space, multiple components are transferred to the carrier. The parts arrangement is characterized by being provided with an arithmetic control unit for controlling the first part among them to be transferred onto the carrier so that one cycle of distinction appears between the repeat cycles of the arrangement order. Device.