JP3263761B2 - Component loading control device of component mounting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a component loading control device of a component mounting machine for mounting electronic components on a substrate.

[0002]

2. Description of the Related Art Conventionally, when electronic components are mounted on a board, for example, a cassette called a number of reels is used. A ribbon or tape is wound on each reel, and different electronic components (chips) are sequentially mounted on each tape. Such electronic components include, for example, a 1 k ohm resistor.

FIG. 9 shows a conventional example of this reel arrangement. As shown in FIG. 9, A1, B1,... G1 reels are arranged in the column direction, and spare reels A2, D corresponding to these reels are spaced apart from these reels.
, G2 are arranged in the column direction. The A1 reel tape and the A2 spare reel tape are sequentially mounted with the same components, for example, a 30 k ohm resistor. Similarly, tapes of the D1 reel and the D2 spare reel are provided with the same components, for example, 1k ohm resistors in order, and these reels and the spare reel are arranged in the component supply unit, and are indicated by arrows X. Can be moved to The electronic components of these reels and spare reels are sequentially mounted on the mounting substrate PB using the mounting head H. For example,
Required number of A1 reel electronic components with position number 1 Board PB
When mounted on the mounting head H,
If the electronic components on the A1 reel run out during mounting, the A2 spare reel with the position number 21 is moved in the direction of arrow X to the mounting head H for a long distance, and the same electronic component that is lacking is removed. I am trying to supply.

[0004]

As described above, the conventional component mounter has a spare reel which is a cassette for supplying the same component in a preliminary manner. First, the mounting operation must be stopped and the corresponding spare reel must be moved a long distance in the direction of arrow X to position the mounting head H. For this reason, this type of mounting machine has a disadvantage that the mounting time is long. In addition, after using the components mounted on the spare cassette, when the next mounting operation is started with the remaining components remaining in this spare cassette, the spare cassette will contain the necessary number of parts for one mounting operation. There is also a problem that the number of stoppages of the mounting machine for component replacement is large and work efficiency is poor. Further, when the electronic components on the A1 reel are exhausted, the electronic components on the A2 spare reel are replaced with the mounting head H.
When the operation of mounting the electronic components of the A2 spare reel on the substrate PB by the mounting head H is performed by the NC program after the positioning, there is the following disadvantage. (1) The program efficiency deteriorates. That is, although the number of mounting points per board is the same, the mounting time is long. Therefore, productivity is low. (2) Further, the number of cassettes of spare electronic components, that is, the number of reels, changes depending on the lot size of the electronic components. Therefore, the electronic component data of the spare cassette must be changed each time. As a result, it is difficult to use the spare cassette function due to these drawbacks.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the number of times the mounting machine has to be stopped due to running out of electronic components can be greatly reduced, thereby reducing the time required for replacement of replacement parts. It is therefore an object of the present invention to provide a component loading control device of a component mounting machine that can efficiently mount components on a board and operate with an optimal NC program.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide, according to the first aspect, an axially extending component mounting portion for arranging cassettes for electronic components, and the electronic program is based on an NC program. A component loading control device for a component mounting machine that mounts components on a board, comprising: at least component count data including a component count per cassette and a cassette type for each component;
A storage unit storing array capability data including an occupation width when the selected cassettes are arranged adjacent to each other in an array, a cassette array operation unit for automatically creating cassette array data, and the NC program as the cassette array data An NC program conversion unit that performs conversion by adapting, and wherein the cassette array operation unit is configured to determine a component based on the production quantity, the number of usable cassettes, the component count data, the array capability data, and the NC program. Calculate the number of cassettes based on another number of parts used and the part number data,
When the required number of cassettes is within the range of the number of usable cassettes, and all cassettes including the case where a plurality of cassettes are arranged adjacently are within the range of the number of cassettes that can be arranged in the component mounting portion, when mounting, This is achieved by a component loading control device of a component mounting machine configured to automatically create cassette array data so that the amount of movement of the component mounting unit along the axial direction is minimized.

[0007]

According to the first aspect of the present invention, the component count data including the component count per cassette and the cassette type for each component, the number of cassettes that can be arranged in the component mounting section, and the cassettes selected for the arrangement are arranged adjacently. In this case, the arrangement capability data including the occupied width in the component mounting section in the case of the above is used. Then, the cassette arrangement calculating section calculates the number of used parts for each part and the number of cassettes based on the part number data based on the production quantity, the number of usable cassettes, the part number data, the arrangement ability data and the NC program. Can be calculated. In this case, the required number of cassettes can be determined within the range of the number of usable cassettes by referring to the component number data and the array capability data. Cassette arrangement data can be automatically created so that all cassettes can be arranged in the component mounting section. Further, the NC program is further converted to conform to the cassette sequence data,
According to the converted program, the mounting operation can be performed efficiently.

As described above, according to the first aspect of the present invention, prior to production, the type of cassette, the number of components to be mounted on the cassette, and the like, which are precisely adapted to the required number of components, are determined, and the number of components mounted on the mounting machine is determined. An arrangement suitable for the ability can be determined. Therefore, a practical cassette arrangement adapted to the performance of the mounting machine can be automatically arranged. In addition, the cassette array data includes an array in which the same or different cassettes are arranged adjacent to each other, so that frequently used products can be arranged adjacent to each other. The amount can be reduced and mounting efficiency is high. Moreover, after such cassette array data is created, N
By converting the C program to conform to this,
The mounting operation can be automatically executed according to the created cassette array data.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the embodiments described below are
Since it is a preferred specific example of the present invention, various technically preferred limitations are added, but the scope of the present invention is limited to the following description unless otherwise specified to limit the present invention.
It is not limited to these embodiments.

FIG. 1 shows a preferred embodiment of a component loading control device for a component mounting machine according to the present invention. The component loading control device 1 according to this embodiment includes a main control unit 2 and a display unit 3
Operation panel 4, production quantity input section 5, pre-conversion NC program input section 6, converted NC program output section 7
, A system program memory 8, a database 9 of the number of components, a database 10 of the performance of component mounting axes, a component array operation unit 11, and an NC program conversion unit 12. .

The main control unit 2 is connected so that signals can be input from an operation panel 4, a production quantity input unit 5, and an NC program input unit 6 before conversion. Converted N
The C program output unit 7 and the display unit 3 are connected so that signals can be given from the main control unit 2. An NCD signal (pre-conversion NC program signal) is supplied from the pre-conversion NC program input unit 6 to the main control unit 2. The SPNCD signal (converted NC program signal) is supplied from the main control unit 2 to the converted NC program output unit 7.

Input / output is possible between the system program memory 8, the component array operation unit 11, the NC program conversion unit 12, and the main control unit 2. A PAD signal (component number database signal) can be input and output between the component array operation unit 11 and the component number database 9. From the component database 10 to the component database 11
A CD signal (component mounting shaft capability database signal) can be input.

FIG. 2 shows an example of a component mounting machine provided with the component loading control device 1 of FIG. This component mounter uses the base 2
0, a component supply unit 22 for a chip that is an electronic component
, A loader 24, an unloader 26, a posture inspection controller 28, an XY table 30, and a mounting head H.
, Power unit 32, adhesive application head 34, operation panel 4
And The substrate PB is supplied to the XY table 30 by the loader 24. Moreover, a board P on which electronic components are mounted
B can be discharged from the XY table 30 by the unloader 26. The component supply unit 22 for chips includes reels A1, A2, B1,..., D1, D2.
Are arranged side by side.

FIG. 3 shows these reels A1, A2,.
Are schematically shown. These reels are
The reels are arranged side by side along the movement direction Z of the component mounting shaft 40 shown in FIG. 2, and these reels can be moved and positioned along the direction Z. In addition, a ribbon or tape is wound around each reel, and electronic components are mounted on the tape. For example, as shown in FIG.
Two spare reel tapes have the same parts, for example, 30k
Ohmic resistors are sequentially mounted. For example, a 10k ohm resistor is mounted on the tape of the B1 main reel. After a desired reel is positioned at the mounting head H, electronic components are taken out of the tape of each reel by a take-out means (not shown) and mounted on the substrate PB.

FIG. 4 shows a cassette 1 for each part number.
It shows the number of electronic components per reel and the type of reel. The number of electronic components and the type of reel are stored in the component number database 9 of FIG. The following is stored in the capability database 10 of the component mounting shaft of FIG.
That is, data indicating how many reels or cassettes can be arranged in the direction Z of the component mounting shaft 40 in FIG. 2 is stored. Component array operation unit 1
1 is to calculate the arrangement of the types of components based on the data signal PAD of the data base 9 of the number of components and the data signal MCD of the capability database 10 of the component mounting axis. That is, for example, the arrangement of the cassettes used for each component is calculated so as not to exceed the capacity of the component mounting shaft.

FIG. 5 shows a database which stores the relationship between the combination of adjacent reels, also called adjacent cassettes, and the occupied width (cassette width) in the direction of the component mounting axis (reference numeral 40 shown in FIG. 2). It is an example. This database is, for example, a part of the capability database 10 of the component mounting shaft shown in FIG. FIG.
The arrangement of adjacent cassettes or adjacent reels as shown in FIG. 6 is determined on the basis of the above database.

Next, reference is made to FIG. 7 and FIG. FIG. 7 is a flowchart for converting a normal NC program into a cassette or reel NC program containing spare parts. (1) First, the operator inputs a normal NC program number and a spare part cassette NC program number from the operation panel 4 shown in FIG. (2) The production lot size (production quantity) of the board and the number of available spare part cassettes are input from the operation panel 4. (3) A normal NC program is read from the pre-conversion NC program input unit 6 of FIG. 1 into the system program memory 8 of FIG. (4) The component placement automatic creation process satisfies the conditions of the production lot size and the number of available spare cassettes entered in the item (2), and the length of the component mounting shaft 40 in the longitudinal direction (the arrow Z direction) in FIG. The number and arrangement of the spare part cassettes that maximize the productivity in the range (capacity range) are determined.
That is, this part arrangement automatic creation processing is, for example,
A spare cassette is prepared so that component replacement does not occur in a certain production lot, and an array is created that further minimizes the amount of movement of the component mounting axis in the Z direction. (5) According to the result of the item (4), the component cassette number of the NC program is changed, and the mounting order of the cassettes is also changed so as not to deteriorate the program efficiency. (6) Based on the result of the item (4), spare part cassette data necessary for the mounting machine of FIG. 2 is created. That is, the position data on the component mounting shaft on which the spare cassette corresponding to the main cassette is loaded is created. (7) The converted NC program for the spare part cassette and the spare part cassette data converted from the system program memory 8 by the main control unit 2 to the NC program output unit 7
Output to

Next, please refer to FIG. 8 and FIG. FIG. 8 is a detailed flowchart of the component arrangement automatic creation processing. (1) NC read into system program memory 8
For each part of the program, the database 9 of the number of parts shown in FIG. 1 is searched to calculate the number of parts per cassette. (2) The number of cassettes required for each component at the time of mounting (at the time of production) is calculated from the production quantity input from the operation panel 4 and the number of components per cassette. (3) Variables are initialized to 1, 1 in order to perform processing from cassette number 1 and spare cassette use number 1. (4) It is determined whether the cassette number (the number of cassettes) is within the range of the capability of the component mounting shaft 40 in FIG. If it is out of the range of this ability, the subroutine of FIG. 8 is terminated and the process returns to the main routine of FIG. (5) It is determined whether the number is within the range of the number of usable spare cassettes. If the number is outside the range, the subroutine of FIG. 8 is terminated and the process returns to the main routine of FIG. (6) When the capacity of the component mounting shaft 40 is within the range of the capacity and the number of spare cassettes, the spare cassette to be used is registered, and the number of spare cassettes used is added. (7) Add 1 to the cassette number being processed. (8) When the processing up to the last cassette is completed, the process returns to the main routine of FIG. The invention is not limited to the embodiments described above. For example, a spare cassette is automatically arranged next to the main cassette on the basis of a database of the number of parts, the movement time in the cassette width Z axis (Z direction), the mounting capacity (number) of cassettes in the Z axis, and the production quantity. Is also good.

[0019]

According to the first aspect of the present invention, the stop time of the mounting machine due to running out of parts of the main cassette can be greatly reduced.
In addition, the number of stoppages of the mounting machine can be greatly reduced, and the time required for replacement of the replenishment portion when the electronic components are exhausted can be reduced, and the optimal NC
Can be operated by program. In particular, it is possible to automatically arrange the cassette arrangement suitable for the mounting machine to be used, and to convert the NC program according to the determined arrangement to realize more efficient mounting work.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a component loading control device of a component mounting machine according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a component mounter according to the embodiment of the present invention.

FIG. 3 is a diagram showing an example of an arrangement of cassettes or reels in the component loading control device according to the embodiment of the present invention.

FIG. 4 is a diagram showing an example of a database indicating the number of parts per cassette according to the embodiment.

FIG. 5 is a diagram illustrating an example of a cassette width of an adjacent cassette according to the embodiment.

FIG. 6 is a view showing an example of cassettes specifically arranged based on the example of FIG. 5;

FIG. 7 is a flowchart for converting a normal NC program into a spare part cassette NC program;

FIG. 8 is a flowchart showing details of the component array automatic creation process of FIG. 7;

FIG. 9 is a diagram showing an arrangement of a conventional component cassette and an arrangement of a spare cassette.

[Explanation of symbols]

Reference Signs List 20 base 22 component supply unit 24 loader 26 unloader 30 XY table H mounting head PB board A1 component cassette (reel, main cassette) A2 spare component cassette (spare reel, spare cassette) B1 component cassette (reel) C1 component cassette (Reel) D1 Parts cassette (Reel) D2 Spare parts cassette (Spare reel) D3 Spare parts cassette (Spare reel) D4 Spare parts cassette (Spare reel)

Continuation of the front page (56) References JP-A-4-69998 (JP, A) JP-A-1-220001 (JP, A) JP-A-2-274000 (JP, A) JP-A-61-121398 (JP) , A) JP-A-1-192200 (JP, A) JP-A-2-232998 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05K 3/30 H05K 13/00- 13/04

Claims (1)

(57) [Claims] 1. A component loading control device for a component mounting machine, comprising an axially extending component mounting portion for arranging electronic component cassettes, and mounting the electronic component on a substrate based on an NC program. At least, the component count data including the component count per cassette and the cassette type for each component, the number of cassettes that can be arranged in the component mounting portion, and the occupation width in the component mounting portion when the selected cassettes are arranged adjacent to each other in the arrangement. A storage unit that stores array capability data including: a cassette array calculation unit that automatically creates cassette array data; and an NC program conversion unit that converts the NC program in conformity with the cassette array data. And the cassette array operation unit calculates the production quantity, the number of usable cassettes, the number of parts, and the array capacity. Based on the data and the NC program, the number of used parts for each part and the number of cassettes based on the number-of-parts data are calculated, and the required number of cassettes is within the range of the number of usable cassettes.
When all cassettes, including a case where a plurality of cassettes are arranged adjacently, are within the range of the number of cassettes that can be arranged in the component mounting portion, the amount of movement of the component mounting portion along the axial direction during mounting is minimized. A component loading control device for a component mounting machine characterized in that cassette arrangement data is automatically created as described above.