JP2008060463A - Mounting machine, mounting line, and air blow method of mounting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting machine that can prevent quality degradation of substrates produced and improve production efficiency. <P>SOLUTION: The mounting machine has a component suction mechanism for sucking a component to be mounted onto a substrate, an air-blow mechanism for air-blowing into an air pipe for suction of the component suction mechanism for cleaning, a need-for-air-blow decision mechanism for deciding whether air blow is necessary, a production standby state detection mechanism for detecting whether the mounting machine is in a non-operational production standby state between a mounting process and a following mounting process, and an air-blow execution control mechanism for controlling the air-blow mechanism based on information from the need-for-air-blow decision mechanism and the production standby state detection mechanism and performing the air-blow in the production standby state if decided such that the air-blow is necessary. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mounting machine for mounting electronic components on a substrate, a mounting line, and an air blowing method for the mounting machine.

  Conventionally, as a mounting machine for mounting an electronic component on a substrate, an electronic component supplied from a component supply unit is sucked and sucked by a suction nozzle of a head, transferred to a predetermined position on the substrate, and mounted. is there.

  Such a mounting machine sucks parts at the tip of the suction nozzle by supplying negative pressure to the suction nozzle through the air tube. In some cases, foreign matters such as dust adhere to the air pipe, block the air pipe, and reduce the suction force.

For this reason, as shown in Patent Document 1, if necessary, an air blow (shaft blow) process in which pressurized air is sent from the air tube side is performed, and foreign matter in the air pipe is discharged and cleaned. Yes.
Patent 3068832 (Claims)

  However, in the conventional mounting machine as shown in Patent Document 1, for example, when air blowing is performed during the mounting process, production is temporarily interrupted by air blowing, which causes a problem that production efficiency is lowered.

  In addition, when air blow is performed after the production line is stopped, for example, after the production of one lot is completed, the air blow is not performed at all and one lot production is continuously performed. If foreign matter adheres to the surface, the component is sucked by the component suction means such as a suction nozzle in the same state. For this reason, the suction force is reduced, the parts cannot be accurately and accurately sucked, and the quality of the production board may be lowered.

  The present invention has been made in view of the above problems, and an object thereof is to provide a mounting machine, a mounting line, and an air blowing method for the mounting machine that can improve the production efficiency without deteriorating the quality of the production board. And

  The present invention provides the following means.

[1] A mounting machine that performs a mounting process on sequentially loaded substrates,
Component suction means for sucking and sucking components and mounting them on a substrate;
An air blowing means for cleaning the inside of the air pipe by blowing air into the suction air pipe of the component suction means;
Air blow necessity determination means for determining whether or not air blow is necessary;
Production standby state detection means for detecting whether the mounting machine is in a non-operational production standby state between the mounting process and the next mounting process;
Air blow execution control for controlling the air blow unit based on information from the air blow necessity determination unit and the production standby state detection unit and performing air blow in the production standby state when it is determined that air blow is necessary. And a mounting machine.

[2] The air blow necessity determination unit includes an air blow necessary level determination unit that determines a necessary level of air blow,
2. The mounting machine according to claim 1, further comprising: an air blow immediate execution unit that performs air blow regardless of whether the air blow required level determining unit determines that the required level is higher than a predetermined level.

[3] A negative pressure level measuring means for measuring a negative pressure level in the air pipeline is provided,
3. The mounting machine according to claim 1, wherein the air blow necessity determination unit includes a first air blow necessity determination unit that determines whether air blow is necessary based on the negative pressure level measured by the negative pressure level measurement unit. .

[4] The component suction means includes a suction nozzle that sucks a component, and a head that holds the suction nozzle in a replaceable manner.
The air blow necessity determination means determines whether or not air blow is necessary based on the number of times of suction by the suction nozzle, and third means determines whether or not air blow is necessary based on the number of times of suction of the head. The mounting machine according to any one of items 1 to 3, further comprising: an air blow necessity determination unit.

[5] Re-air blow necessity determination means for measuring the negative pressure level in the air pipeline where the air blow has been performed and determining the necessity of re-air blow based on the negative pressure level;
The mounting machine according to any one of the preceding items 1 to 4, further comprising: a re-air blow execution control unit that performs re-air blow when the re-air blow necessity determination unit determines that re-air blow is necessary.

[6] Re-air blow repeating means for repeating the re-air blow until the negative pressure level in the air line becomes equal to or lower than a predetermined level;
When the number of re-air blows reaches a predetermined number, when the negative pressure level in the air line is higher than the predetermined level, a notification unit that notifies the fact is provided, Mounting machine.

[7] A mounting line that performs mounting processing on a board sequentially loaded from an upstream facility by a mounting machine, and the mounting-processed board is sequentially transported from the mounting machine to the downstream equipment,
The mounting machine is
Component suction means for sucking and sucking components and mounting them on a substrate;
Air blowing means for cleaning the inside of the air pipe by blowing air into the suction air pipe of the component suction means;
Air blow necessity judgment means for judging whether or not air blow is necessary,
Production standby state detection means for detecting whether the mounting machine is in a non-operational production standby state between the mounting process and the next mounting process;
Air blow execution control for controlling the air blow unit based on information from the air blow necessity determination unit and the production standby state detection unit and performing air blow in the production standby state when it is determined that air blow is necessary. And a mounting line.

[8] A component is sucked and sucked by the component sucking means and mounted on the substrate, and if necessary, air is blown into the suction air duct of the component sucking means to clean the inside of the air pipe. The air blow method of the mounting machine,
An air blowing method for a mounting machine, comprising: performing air blowing when a mounting machine between a mounting process for a predetermined board and a mounting process for a next board is in a non-operating production standby state.

  According to the mounting machine according to the invention [1], since air blow is performed in a non-operating production standby state, it is possible to prevent a reduction in production efficiency. Further, since the air duct can be reliably cleaned by air blowing, it is possible to prevent the adsorption force from being lowered and improve the quality.

  According to the mounting machine according to the invention [2], when the necessity of air blow is high, air blow is preferentially performed, and therefore, it is possible to more reliably prevent a decrease in the suction force.

  According to the mounting machine according to the invention [3], air blow is performed in accordance with the negative pressure in the air pipe, so that it is possible to reliably cope with sudden clogging.

  According to the mounting machine according to the invention [4], air blow is performed according to the number of suctions of the suction nozzle and the head, so that it is possible to reliably cope with cumulative (slow) clogging. Can do.

  According to the mounting machine according to the invention [5], since the air blow is performed again in accordance with the negative pressure in the air conduit, the air conduit can be more reliably cleaned.

  According to the mounting machine according to the above invention [6], if the air pressure does not return to the normal negative pressure level even after repeated air blows, the information to that effect is notified. Even if you can deal with it accurately.

  According to the said invention [7], the mounting line which show | plays the same effect similarly to the above can be provided.

  According to the said invention [8], the air blow method of the mounting machine which show | plays the same effect similarly to the above can be provided.

  FIG. 1 is a plan view showing an example of a mounting machine according to the present invention. As shown in the figure, the mounting machine 1 includes a conveyor 12 that is arranged on a base 11 and conveys a substrate W, component supply units 13 that are arranged on both sides of the conveyor 12, and a base 11. And an electronic component mounting head unit 14 provided.

  The component supply unit 13 is provided on the upstream side and the downstream side of the conveyor 12 on the front side and the rear side, respectively. In this embodiment, the front side and the rear side upstream part are provided with a part supply unit 15 to which a plurality of parts supply devices such as tape feeders can be arranged side by side, and a component supply container such as a pallet is stacked on the rear side downstream side. A tray-type component supply unit 16 that can be attached is provided. The components supplied from these component supply units 13 can be picked up by the head unit 14.

  Also, component photographing cameras 17 and 17 are provided between the component supply unit 13 divided into the upstream side and the downstream side. The component photographing cameras 17 and 17 image the state of the component sucked by the head unit 14 and detect a positional deviation of the component.

  An air blow station 2 and a nozzle station 3 which will be described in detail later are provided along the conveyor 12 in the vicinity of the conveyor 12 of the component supply unit 13 on the downstream side on the front side.

  The head unit 14 is movable in a region extending between the component supply unit 13 and the mounting position on the substrate W so that components can be picked up from the component supply unit 13 and mounted on the substrate W. Specifically, the head unit 14 is supported by a head unit support member 142 extending in the X-axis direction (the substrate transport direction of the conveyor 12) so as to be movable in the X-axis direction. The head unit support member 142 is supported at both ends thereof by guide rails 143 and 143 extending in the Y-axis direction (a direction perpendicular to the X-axis direction in a horizontal plane) so as to be movable in the Y-axis direction. The head unit 14 is driven in the X axis direction by the X axis motor 144 via the ball screw shaft 145, and the head unit support member 142 is driven in the Y axis direction by the Y axis motor 146 via the ball screw shaft 147. Movement is to be performed.

  In addition, a plurality of heads 41 are mounted on the head unit 14 side by side in the X-axis direction. Each head 41 is driven in the vertical direction (Z-axis direction) by an elevating mechanism using a Z-axis motor as a drive source, and is rotated around the Z-axis (R-axis) by a rotation drive mechanism using an R-axis motor as a drive source. Direction).

  As shown in FIG. 1 and FIG. 2, each head 41 is mounted with a plurality of suction nozzles 42 for sucking and mounting electronic components on a substrate side by side in the X-axis direction.

  Each suction nozzle 42 and each head 41 is provided with an air conduit 40 therein, and the corresponding air conduits are connected to each other. Further, an end of an air tube 43 that constitutes a part of the air conduit 40 is connected to the air conduit 40 on the head side. The other end side of the air tube 43 is branched in two directions, and one side is connected to the suction pump 45 and the other side is connected to the pressurizing pump 46. Further, the air tube 43 is provided with a negative pressure level detection sensor 44 that detects a negative pressure level in the air pipe line 40.

  When the suction pump 45 is driven and a negative pressure is supplied into the air conduit 43 of the air tube 43, the head 41, and the suction nozzle 42, the electronic components are sucked by the suction nozzle 42. Further, when a negative pressure is supplied into the air conduit 40, the negative pressure level detection sensor 44 can measure the negative pressure level (vacuum pressure) in the air conduit.

  Further, when the pressurizing pump 46 is driven, compressed air is blown into the air pipes of the air tube 43, the head 41, and the suction nozzle 42, whereby the inside of the air pipe is blown to air, as will be described later. The foreign matter adhered and accumulated inside is discharged from the tip of the suction nozzle 42.

  Here, in the present embodiment, the component suction means is configured by the head 41, the suction nozzle 42, the air tube 43, the suction pump 45, and the like. Further, the suction pump 45 constitutes an air suction means, and the pressurization pump 46 constitutes an air blow means. The negative pressure level detection sensor 44 constitutes a negative pressure level measuring unit.

  In the present embodiment, negative pressure can be individually supplied to the air pipes 40 corresponding to the respective suction nozzles 42 by the air suction means, and the air pipes 40 corresponding to the respective suction nozzles 42 are respectively supplied by the air blowing means. Air blow can be performed individually.

  Further, the head unit 14 is provided with a board photographing camera 18 composed of, for example, a CCD camera equipped with illumination. The board photographing camera 18 can photograph a position reference mark and a board ID mark provided on the board W carried into the mounting machine 1.

  As shown in FIG. 2, the air blow station 2 is provided with a discharge box 21 at the upper end portion, and a plurality of nozzles corresponding to the suction nozzles 42 mounted on the head unit 14 are provided on the upper surface of the discharge box 21. A receiving hole 22 is provided. Further, the discharge box 21 is driven up and down in the up and down direction (Z-axis direction) by an up and down drive mechanism (not shown).

  When the discharge box 21 rises in a state where the head unit 14 has moved to a position corresponding to the air blow station 2, each suction nozzle 42 of the head unit 14 is accommodated in each nozzle accommodation hole 22 of the discharge box 21. It has become. Further, in that state, when pressurized air is supplied from the pressure pump 46 into the air conduit 40 and air blow is performed, foreign matter in the air conduit 40 is discharged from the tip of the suction nozzle together with the pressurized air. , And is discharged into the discharge box 21.

  The nozzle station 3 is provided with a plurality of nozzle storage portions capable of stocking suction nozzles, and replacement suction nozzles are stocked in a part thereof. When the head unit 14 has moved to the position of the nozzle station 3, the head unit 14 can stock the suction nozzle 42 attached thereto in the nozzle station 3 and attach another replacement suction nozzle. Yes.

  FIG. 3 is a block diagram showing a control system of the mounting machine 1. As shown in the figure, the mounting machine 1 includes a control device 6 composed of a personal computer or the like, and various operations of the mounting machine 1 are controlled by the control device 6, and operations detailed later are automatically performed. Is to be executed.

  The control device 6 includes an arithmetic processing unit 60, a mounting program storage unit 63, a transport system data storage unit 64, a motor control unit 65, and an external input / output unit 66.

  The arithmetic processing unit 60 comprehensively manages various operations of the mounting machine 1.

  The mounting program storage unit 63 stores a production program (mounting program) for mounting each electronic component on the substrate W. This production program includes a mark indicating the mounting position (coordinates) and orientation of each electronic component based on the circuit pattern of the substrate W, shape data for recognizing each electronic component, a feeder to which each electronic component is supplied, etc. The position (coordinates) is included. Further, the mounting program storage means 63 includes data related to the production program, for example, an air blow necessity determination operation execution program, an air blow operation execution program, a production standby state detection operation execution program, which will be described later. Further, the mounting program storage means 63 also stores various data related to the air blow operation described later, such as a data table for determining whether or not air blow is shown in FIGS.

  The transfer system data storage means 64 stores various data related to the transfer of the substrate W on the production line.

  The motor control unit 65 controls the operation of the drive motor and the like of each axis of the head unit 14.

  The external input / output unit 66 inputs and outputs various types of information to and from various sensors and stoppers provided in the mounting machine 1. The various sensors include a negative pressure level detection sensor 44 in the component suction means.

  The control device 6 is connected to a display unit 62 such as a CRT display or a liquid crystal display for displaying various information. Furthermore, an input unit (not shown) such as a keyboard and a mouse for inputting various information is connected to the control device 6.

  In the present embodiment, the control device 6 has functions for executing the operations described later, specifically air blow necessity determination means (air blow necessity level judgment means, first air blow necessity judgment means, second air blow necessity means). Non-determination means, third air blow necessity judgment means), production standby state detection means, air blow execution control means, air blow immediate execution means, re-air blow execution control means, re-air blow necessity judgment means, re-air blow repetition means, notification means, etc. These functions are included.

  In the mounting machine 1 configured as described above, the control device 6 operates in response to an operation start command input via the input unit, and the control device 6 controls the drive of each drive unit, so that the following operations are automatically performed. Done.

  First, as shown in step S1 of FIG. 4, when an unmounted board P is carried into the mounting machine 1, the board W is transported to a predetermined mounting position by the conveyor 12 and fixed at that position ( Step S2).

  Thereafter, electronic components are mounted on the substrate W. That is, the head unit 14 moves to the position of the component supply unit 13, and a predetermined electronic component is sucked by the predetermined suction nozzle 42 (step S3).

  Subsequently, the head unit 14 passes through the component photographing camera 17, and the component photographing camera 17 images the state of the component attracted by the head unit 14, and detects the positional deviation of the component (step S4). .

  Next, the head unit 14 moves to the position of the substrate W, and the sucked component is mounted at a predetermined position on the substrate W (step S5).

  Next, it is determined whether or not the air duct 40 in the component suction means 41 to 43 such as the head unit 14 needs to be cleaned by air blow (step S6).

  In this way, components are sequentially mounted on the substrate W, and the necessity of air blow is determined each time (steps S3 to S7). When all the components are mounted on the substrate W (YES in step S7), a production standby state is detected (step S8) and air blow is performed as necessary (step S9), as will be described in detail later. ).

  The air blow necessity determination operation (step S6), the production standby state detection operation (step S8), and the air blow operation (step S9) will be described in detail later. Here, the schematic operation of the entire mounting machine is described here. explain.

  After the air blow, the substrate W is unloaded (step S10), and when the production is continued (NO in step S11), the next substrate W is loaded (step S1), and the above operation is repeated.

  When the mounting process is completed for all the substrates W (YES in step S11), the operation of the mounting machine 1 is completed.

  Next, the air blow necessity determination operation shown in step S6 will be described in detail. In this operation, a data table (FIGS. 5 and 6) stored in the mounting program storage means 63 of the control device 6 is used.

  The table shown in FIG. 5 holds threshold calculation data for each head and suction nozzle.

  5 and 7, when the suction pump 45 is driven and negative pressure is supplied to the suction nozzle 42, no component is mounted on the suction nozzle 42 (the tip of the suction nozzle is fully open). ) And the air line is free from dirt and clogging due to dust, fluff of tape parts, mist, and solder on the board (full state), equivalent to the negative pressure level (atmospheric pressure) of the air line To do. This suction level is such that the air line is fully open and fully open, so that the atmospheric pressure is the highest and the negative pressure level is the lowest during suction. For example, the suction level of the suction nozzle with nozzle number “1” attached to the head with head number “1” is “190”. In FIG. 7, the atmospheric pressure decreases as the negative pressure level increases (the same applies to the following description).

  The mounting level corresponds to the negative pressure level of the air line in the state where the component is mounted on the suction nozzle during suction. This mounting level is the state in which components are mounted, that is, the suction nozzle tip is in a fully closed state, so that the atmospheric pressure is the lowest during suction and the negative pressure level is the highest. For example, the mounting level of the suction nozzle with nozzle number “1” attached to the head with head number “1” is “230”.

  The negative pressure warning level corresponds to the negative pressure level when the tip of the suction nozzle is fully open and a small amount of foreign matter is accumulated in the air pipe. In the present embodiment, although cleaning by air blow is recommended, a negative pressure level that is assumed to cause no immediate trouble in the suction operation (mounting operation) of the suction nozzle corresponds to the negative pressure warning level.

  The negative pressure warning level threshold is a reference value for determining whether or not the actually measured negative pressure level in the air line is the negative pressure warning level, and is obtained based on the negative pressure warning level rate.

  The negative pressure warning level rate is set in advance based on past production data, experimental data, and the like. Here, the negative pressure warning is based on the suction level, with the interval between the suction level and the mounting level as 100%. It is displayed as a percentage (%) corresponding to the level. From this negative pressure warning level rate, the threshold value can be calculated using the following equation (1).

Negative pressure warning level threshold = adsorption level +
(Mounting level−Suction level) × Negative pressure warning level ratio / 100 (1)
Specifically, in order to obtain the negative pressure warning level threshold value for the suction nozzle having the head number “1” and the nozzle number “1”, the suction level is “190” and the mounting level is “230” in the above equation (1). The negative warning level rate is calculated as “30%”. Thereby, the threshold value “202” can be obtained.

  The abnormal negative pressure level corresponds to the negative pressure level when the tip of the suction nozzle is fully open and a large amount of foreign matter is accumulated in the air pipe. In the present embodiment, the negative pressure level that is assumed to cause an early trouble in the suction operation (mounting operation) of the suction nozzle unless the cleaning by air blow is immediately performed corresponds to the negative pressure abnormal level.

  The negative pressure abnormal level threshold is a reference value for determining whether or not the actually measured negative pressure level is a negative pressure abnormal level, and is obtained based on the negative pressure abnormal level rate.

  The negative pressure abnormal level rate is set in advance based on past production data, experimental data, and the like. Here, similarly to the above warning level rate, the suction level is set to 100% between the suction level and the mounting level. Based on the level, it is displayed at a ratio (%) corresponding to the negative pressure abnormal level. From this negative pressure abnormal level rate, the threshold value can be calculated by the following equation (2).

Negative pressure warning level threshold = adsorption level +
(Mounting level-Adsorption level) x Negative pressure abnormal level rate / 100 (2)
Specifically, in order to obtain the negative pressure abnormal level threshold value for the suction nozzle having the head number “1” and the nozzle number “1”, the suction level is “190”, the mounting level is “230” in the above equation (2), The negative warning level rate is calculated as “50%”. Thereby, the threshold value “210” can be obtained.

  The suction frequency warning level of the suction nozzle corresponds to the number of suction times of the suction nozzle that is assumed to accumulate foreign matter in the air pipeline. In this embodiment, although cleaning by air blow is recommended, the number of times of suction that is assumed to cause no immediate trouble in the suction operation of the suction nozzle corresponds to the suction number warning level.

  The suction nozzle warning level threshold value of the suction nozzle is a reference value for determining whether or not the nozzle suction frequency is a warning level, and is specified based on past production data, experimental data, or the like.

  The suction nozzle abnormal level is equivalent to the suction frequency of the suction nozzle that is assumed to accumulate a large amount of foreign matter in the air pipe. In the present embodiment, the number of times of suction that is assumed to cause an early trouble in the suction operation of the suction nozzle if cleaning by air blow is not performed corresponds to the abnormal number of times of suction.

  The suction nozzle abnormal level threshold value of the suction nozzle is a reference value for determining whether or not the nozzle suction frequency is an abnormal level, and is specified based on past production data, experimental data, or the like.

  For example, in the suction nozzle having the head number “1” and the nozzle number “1”, the suction frequency warning level is “2000” and the abnormal level is “5000”.

  In the present embodiment, whether or not air blow is necessary is determined based on the number of times of suction of the head (number of times of use) in addition to the number of times of suction of the suction nozzle.

  That is, the head suction frequency warning level corresponds to the head suction frequency for which air blow is recommended, and the suction frequency abnormality level corresponds to the head suction frequency that requires air blow early.

  In addition to the past production data, experimental data, etc., the threshold value for each suction nozzle mounted on the head is used as the criteria for determining these levels. It is calculated from the cumulative total.

  For example, the head number “1” has a suction frequency warning level of “20000” and an abnormal level of “50000”.

  Further, as shown in FIG. 6, in the present embodiment, the current negative pressure level in the air conduit, and the current number of suctions for each head and each suction nozzle are held as a data table. These retained data are dynamic data updated in real time for each implementation.

  The air blow execution request indicates whether or not there is an execution request based on the result of air blow necessity determination. When there is a request, it is held in the “ON” state, and when there is no request or in the reset state (initial state) Is held in an “OFF” state.

  The mounting machine 1 of the present embodiment performs the air blow necessity determination operation shown in step S6 of FIG. 4 while referring to these tables (FIGS. 5 and 6). That is, as shown in FIG. 8, the suction valve is opened and negative pressure is supplied to the suction nozzle 42 (step S601).

  Subsequently, the negative pressure level (atmospheric pressure) of the air line corresponding to the suction nozzle 42 is acquired (step S602). The negative pressure level acquisition method is measured by the negative pressure level detection sensor 44 (FIG. 2) as described above, and the negative pressure level is held as the current negative pressure level in the data table of FIG. The negative pressure level data is measured for each suction nozzle (each air pipe).

  Next, all the air blow execution requests in the table of FIG. 6 are reset (step S603).

  Subsequently, it is determined whether or not the current negative pressure level has reached an abnormal level (step S604). That is, when the current negative pressure level is higher than the negative pressure abnormal level threshold value shown in FIGS. 5 and 7 (YES in step S604), it is determined that the level is abnormal, and the air blow execution request ( (Abnormal level) is set to “ON” (step S611), and the necessity determination operation ends.

  If it is not an abnormal level (NO in step S604), it is determined whether the current negative pressure level has reached the warning level (step S605). That is, if the current negative pressure level is higher than the negative pressure warning level threshold value (FIGS. 5 and 7) (YES in step S605), it is determined as the warning level and the air blow execution request (warning level) in FIG. ) Is set to “ON” (step S611), and the necessity determination operation ends.

  If it is not a warning level (NO in step S605), it is determined whether or not the number of suctions for each head is an abnormal level. If it is an abnormal level (YES in step S606), an execution request for an abnormal level is “ ON "is set (step S610).

  If it is not an abnormal level (NO in step S606), it is determined whether or not the number of suctions for each head is a warning level. If it is a warning level (YES in step S607), the warning level execution request is “ ON "is set (step S611).

  If it is not a warning level (NO in step S607), it is determined whether or not the number of suctions for each suction nozzle is an abnormal level. If it is an abnormal level (YES in step S608), the execution request is set to “ON”. (Step S610).

  If it is not an abnormal level (NO in step S608), it is determined whether or not it is a warning level for the number of suctions for each suction nozzle. If it is a warning level (YES in step S609), the execution request is set to “ON”. (Step S611).

  If it is not the warning level (NO in step S609), the necessity determination operation ends.

  The above-described air blow necessity determination operation will be described with reference to the specific examples shown in the tables of FIGS. 5 and 6. The suction nozzles with the head number “1” and the nozzle number “1” have an abnormal negative pressure level, and an air blow with an abnormal level. The execution request is set to “ON”, the suction nozzle of nozzle number “2” has the negative pressure level as a warning level, and the warning level air blow execution request is set as “ON”. Further, the suction nozzle of the head number “2” and the nozzle number “2” has the suction frequency at the abnormal level, and the abnormal level air blow execution request is set to “ON”.

  In the present embodiment, in the mounting machine, the tables of FIGS. 5 and 6 are usually displayed on a display unit such as a monitor. In this displayed table, the numerical values indicating the abnormal level and warning level and the display frame are displayed. You may make it blink, or you may make it light and blink in red and yellow. In this case, the operator can immediately and accurately grasp the state in each air pipe.

  In this embodiment, the air blow necessity determination means is configured by the function (program) of the control device 6 that performs the air blow necessity determination operation. Further, among the air blow necessity determination means, the means for determining necessity based on the negative pressure level is the first air blow necessity determination means, and the means for determining necessity based on the number of times of suction of the suction nozzle is the second air blow necessity determination means. The means for determining the necessity based on the number of times of suction of the head constitutes a third air blow necessity determination means. Further, in the first to third air blow necessity judgment means, means for judging whether the level is an abnormal level or a warning level constitutes an air blow necessity level judgment means.

  In this embodiment, as described above, after all the components are mounted on the board (YES in step S7 in FIG. 4), the production standby state is detected (step S8), and the air blow (step S9) is performed. Is called.

  In the air blow operation of the present embodiment, in the case of a warning level, air blow is performed only in a production standby state described later. That is, if it is not in a production standby state, air blow is not performed and production is continued as it is (step S9). On the other hand, in the case of an abnormal level, air blow is performed regardless of whether or not it is in a production standby state. That is, in the case of an abnormal level, even during production, the production is interrupted and an immediate air blow is performed.

  Here, in the present embodiment, the production standby state refers to a state in which the production cannot be performed immediately and the mounting machine 1 is not operating, in other words, the suction mounting operation, the substrate transporting operation, and the substrate fixing / releasing operation are not performed. This means a state where there is no request for transporting a substrate from the upstream and downstream facilities. In this embodiment, a state other than the production standby state is referred to as a production state, and this production state includes a substrate mounting state and a substrate transport state.

  The production standby state is detected by the following process. That is, as shown in FIG. 9, it is determined whether or not the substrate is fixed. If it is fixed (YES in step S801), it is determined that the substrate is being mounted (production state) (step S809). ), Information indicating that it is in a production state is stored and held in the mounting program storage means 63 of the control device 6 (step S810).

  If the substrate is not fixed (NO in step S801), it is determined whether or not the substrate transfer process is activated. If the substrate transfer process is being activated (YES in step S802), the substrate is being transferred (production state). ) (Step S808), and the information is recorded (step S810).

  Subsequently, whether the conveyor motor is rotating (step S803), whether there is a substrate carry-out request from the upstream facility (step S804), or whether there is a substrate carry-in request from the downstream facility (step S805) is sequentially determined. If the answer is YES, it is determined that the substrate is being conveyed (production state) (step S808), and the information is recorded (step S810).

  If all the determinations in steps S801 to S805 are NO, it is determined that the substrate is in a standby state (production standby state) (step S806), and information indicating that the production standby state is in the storage unit 63 of the control device 6 is recorded. Is done.

  In the present embodiment, the production standby state detection means is configured by the function (program) of the control device 6 that performs the production standby state detection operation.

  Next, the air blow operation (step S9 in FIG. 4) will be described in detail. As shown in FIG. 10, in the air blowing operation, the head number is initialized (reset) in order to perform the air blowing operation in order from the first head (step S901). Then, for the first head (head number “1”) (NO in step S902), the state of the abnormal level air blow execution request in FIG. 6 is referred to and set to “ON” (YES in step S903). ), Air blow (steps S906 to S910) is performed as described later.

  When the execution request for the abnormal level is “OFF” (NO in step S903), the state of the warning level air blow execution request in FIG. 6 is referred to and set to “ON” (YES in step S904). It is determined whether or not it is in a state. This determination is made based on the information detected by the production standby state detection means. If the production standby state is established (YES in step S905), air blow is performed.

  In the air blow operation, when the number of air blows is reset in step S906 and the number of air blows is equal to or less than the preset number of retries (NO in step S907), air blow is performed (step S908). The number of retries is obtained in advance based on past production data, experimental data, and the like.

  In the air blowing process in step S908, the head unit 14 moves to the position of the air blowing station 2. Subsequently, the discharge box 21 (see FIG. 2) of the air blow station 2 is raised, and each suction nozzle 42 of the head unit 14 is accommodated in each nozzle accommodation hole 22 of the discharge box 21. In this state, pressurized air is supplied from the pressure pump 46 into the air line. As a result, pressurized air is circulated in the air conduit, and foreign matter in the air conduit is discharged from the tip of the suction nozzle 42 together with the pressurized air, and is discharged into the discharge box 21. To be cleaned.

  After the air blow is performed, the negative pressure level is measured based on the information from the negative pressure level detection sensor 44, and the actually measured negative pressure level is higher than the negative pressure warning level (see FIGS. 5 and 7). If it is abnormal (abnormal in step S909), the number of air blows is incremented (step S910), and air blow is performed again (steps S907 and S908).

  In this embodiment, the re-air blow necessity judgment means and the re-air blow execution control means are configured by the function (program) of the control device 6 that performs the re-air blow necessity judgment operation and the re-air blow execution control operation.

  The air blow is repeated until the negative pressure level is below the warning level (normal) (steps S907 to S910). If the negative pressure level does not return to normal even if the number of air blows exceeds the number of retries (YES in step S907), the operator is notified of warning information that automatic cleaning cannot be performed, as shown in step S911. Stop operation. This warning information is notified by a display on the display unit 62, a buzzer sound, a warning light, or the like, and urges manual maintenance by the operator. When warning information is displayed on the display unit 62, the head number to be cleaned, the current negative pressure level, and the like may be displayed together as necessary.

  In the present embodiment, the re-air blow repetition means and the notification means are configured by the function (program) of the control device 6 that performs the re-air blow repetition operation and the notification operation. In terms of hardware, the notification unit is configured by the display unit 62, an alarm buzzer, a warning light, and the like.

  In step S909, when the negative pressure level returns to normal, the head number is incremented (step S912), and the same operation as described above is performed on the next head (for example, the head having the head number “2”). In this way, the necessity of air blow is checked for all the heads, and air blow is performed as appropriate.

  On the other hand, in FIG. 10, if there is no warning level air blow execution request (NO in step S904), or if it is not in a production standby state (NO in step S905), as shown in FIG. The air blowing operation is performed on all the suction nozzles mounted on the existing head (for example, the head having the head number “1”).

  That is, the nozzle number is initialized (reset) (step S951) and the first (nozzle number “1”) suction nozzle (NO in step S952) refers to the abnormal level air blow execution request state in FIG. If it is set to “ON” (YES in step S953), air blow (steps S956 to S961) is performed as described later.

  When the abnormal level execution request is “OFF” (NO in step S953), the state of the warning level air blow execution request in FIG. 6 is referred to, and when it is set to “ON” (YES in step S954), production standby It is determined whether or not it is in a state, and if it is in a production standby state (YES in step S955), air blow is performed.

  In the air blow, first, the suction nozzle is replaced as necessary (step S956). That is, for example, the suction nozzle of nozzle number “1”, which is the target of air blow, is not necessarily currently attached to the head of head number “1”, and another suction nozzle is attached to the head. There may be. In such a case, after the head unit 14 has moved to the position of the nozzle station 3, the suction nozzle mounted on the head unit 14 is stocked in the nozzle station 3, and the suction nozzle of nozzle number “1” is mounted. .

  When a nozzle device having a plurality of suction nozzles that can be rotated and switched is mounted on the head, the suction nozzle is rotated, for example, without moving to the nozzle station 3, and the nozzle number “ What is necessary is just to arrange | position the suction nozzle of 1 "in a predetermined position.

  After the nozzle replacement, the number of air blows is reset (step S957), and if the number of air blows is equal to or smaller than the predetermined number of retry (NO in step S958), air blow is performed in the same manner as above (step S959). The number of retries is obtained in advance based on past production data, experimental data, and the like.

  After the air blow is performed, the negative pressure level is measured. If the actually measured negative pressure level is higher than the negative pressure warning level (see FIGS. 5 and 7) and is abnormal (abnormal in step S960), the air blow level is measured. The number of times is incremented (step S961), and air blow is performed again (steps S958 and S959).

  In the present embodiment, the re-air blow necessity judgment means and the re-air blow execution control means are configured by the function (program) of the control device 6 that performs the re-air blow necessity judgment operation and the re-air blow execution control operation.

  Air blow is repeated until the negative pressure level is below the warning level (normal) (steps S958 to S961). If the negative pressure level does not return to normal even if the number of air blows exceeds the number of retries (YES in step S958), the operator is notified of warning information that automatic cleaning cannot be performed as shown in step S962, and the air blow The operation is stopped. Similar to the above, this warning information is notified by display on the display unit 62, a buzzer sound, a warning light, etc., and urges manual maintenance by the operator. Similarly to the above, when warning information is displayed on the display unit 62, the head number, nozzle number, current negative pressure level, and the like to be cleaned may be displayed together as necessary. good.

  In the present embodiment, the re-air blow repetition means and the notification means are configured by the function (program) of the control device 6 that performs the re-air blow repetition operation and the notification operation. In terms of hardware, the notification unit is configured by the display unit 62, an alarm buzzer, a warning light, and the like.

  In step S960, when the negative pressure level returns to normal, the nozzle number is incremented (step S963), and the same as described above for the next suction nozzle (the suction nozzle having the head number “1” and the nozzle number “2”). Is performed.

  On the other hand, if there is no warning level air blow execution request (NO in step S954), or if it is not in a production standby state (NO in step S955), the nozzle number is incremented (step S963), and the next suction nozzle is set. The same operation as described above is performed.

  In this way, the necessity of air blow is checked for all suction nozzles mounted on the head that is currently the target of air blow (for example, the head with head number “1”), and air blow is performed as appropriate.

  When the air blowing operation is performed for all the suction nozzles (YES in step S952), the head number is incremented as shown in step S912 of FIG. 10, and the next head (for example, the head of head number “2”) The same operation as described above is performed, and when the air blowing operation is performed on all the heads and all the suction nozzles (YES in step S902), the air blowing operation is finished.

  After the air blow is thus completed, the substrate W is unloaded as described above (step S10 in FIG. 4), and the production is continued until all the substrates are processed (step S11).

  As described above, according to the mounting machine 1 of the present embodiment, when a foreign matter is clogged in the air pipe, the mounting machine 1 is in a non-operating production in the case of clogging at a warning level with a low degree of urgency. Since air blow is performed in the standby state, production is not interrupted by air blow, and high production efficiency can be maintained. In addition, since the air duct can be reliably cleaned, the suction force can be prevented from being lowered, and the parts can be sucked accurately and accurately, thereby improving the quality of the production substrate.

  Further, according to the mounting machine 1 of the present embodiment, when an abnormal level clogging with a high degree of urgency occurs, regardless of the production standby state, air blow is preferentially performed to remove foreign matters immediately. Therefore, it is possible to reliably prevent problems such as the occurrence of suction failure and to further improve the quality of the production substrate.

  In the present embodiment, air blow is performed in accordance with the negative pressure in the air pipe, so that sudden clogging such as when fluff of tape parts in the tape feeder is sucked into the air pipe, etc. Can be dealt with reliably, and the component can be adsorbed more accurately and reliably, and the quality of the production board can be further improved.

  In addition, in this embodiment, air blow is performed according to the number of times of suction for each head and the number of times of suction for each suction nozzle, so that dust, mist, solder on the substrate, etc. gradually accumulate in the air pipe. In this case, it is possible to reliably deal with accumulating (slow) clogging and dirt, etc., and the suction of components can be performed more reliably, and the quality of the production board can be further improved.

  Further, in this embodiment, after the air blow is performed, the negative pressure level is measured, and when the negative pressure level does not return to normal, the air blow is repeatedly performed until it returns to normal. The inside of the pipe line can be more reliably cleaned, and the components can be sucked more accurately and reliably.

  In the mounting machine 1 of the present embodiment, if the negative pressure level does not return to normal even after air blow is repeated a predetermined number of times, this is notified and manual maintenance by the operator is encouraged. A firm clogging that cannot be removed even by automatic cleaning by air blow can be reliably eliminated by the operator, and any troubles such as clogging can be dealt with reliably.

  In the above embodiment, when clogging of an abnormal level with a high degree of urgency occurs, cleaning is performed by air blow after all the component mounting processing has been completed on the currently mounted board. The present invention is not limited to this. For example, when clogging of an abnormal level with a high degree of urgency occurs, the mounting of the board may be interrupted and cleaning may be performed immediately by air blow.

  Further, in the above embodiment, the production standby state is detected and air blow is performed, but the present invention is not limited thereto, for example, by performing air blow according to the elapsed time in the production standby state, Production efficiency can be further improved.

  In other words, when the air blow operation at the warning level with a low degree of urgency is being executed in the production standby state, for example, if there is a substrate carry-out request from the upstream equipment or a board carry-in request from the downstream equipment, Will be released and will shift to the production state. In this case, as a result, air blow is performed in a production state, which may cause a reduction in production efficiency. On the other hand, the production standby state may be long or short, and only when the production standby state is long, if an air blow operation with a low urgency can be performed, a reduction in production efficiency can be reliably prevented. That is, if it is possible to detect a case where the production standby state becomes long, the production efficiency can be further improved.

  Therefore, in order to detect when the production standby state becomes long, the elapsed time in the production standby state is measured, and when a predetermined time has elapsed, an air blow operation is performed. In other words, when a predetermined time has elapsed in the production standby state, it is highly probable that some trouble has occurred in the upstream and downstream facilities, and it can be assumed that the production standby state will be long. Only when the air blow operation is performed, the production efficiency can be further improved.

  Detection when the production standby state becomes longer can be performed by the following means (production standby time detection means). That is, as shown in step S101 of FIG. 12, information indicating that the production is in a standby state is acquired from the mounting program storage unit 63 of the control device 6. If the information is in a standby state (step S102), the control device 6 is informed. The provided timer is started (NO in step S103, step S107). Subsequently, a preset standby time set in advance is acquired from the mounting program storage means 63 (step S104), and a timer value (actual elapsed time) is acquired from the timer (step S105). Then, the set standby time (set value) and the actual elapsed time (timer value) are compared. If the actual elapsed time is short (NO in step S106), the above operation is repeated (steps S101 to S106). The set elapsed time is obtained in advance based on past production data, experimental data, and the like.

  If the actual elapsed time becomes longer than the set standby time while repeating the above operation (YES in step S106), it is determined that the standby time will be longer (step S108), and the detection operation is terminated. When it is determined that the standby time becomes long, an air blow start command is transmitted, and the above air blow operation is executed during this long production standby time.

  On the other hand, if the production standby state is canceled before the actual elapsed time becomes longer than the set standby time (NO in step S102), it is determined that the standby time is short (step S109), and the detection operation is terminated. When the standby time is short, an air blow skip command is transmitted, and production is started (continued) without performing air blow.

  Thus, only in a long-time production standby state, when air blow with a low emergency level is performed, productivity can be further improved.

It is a top view which shows the mounting machine concerning one Embodiment of this invention. It is a schematic front view which shows the blow station with which the mounting machine of embodiment was equipped. It is a block diagram which shows the control system of the mounting machine of embodiment. It is a flowchart for demonstrating the whole operation | movement in the mounting machine of embodiment. It is a figure for demonstrating the data (table) memorize | stored for air blow necessity judgment in embodiment. It is a figure for demonstrating the data (table) memorize | stored for air blow execution determination in embodiment. It is a graph which shows the negative pressure level state in an air pipe line in embodiment. It is a flowchart for demonstrating the air blow necessity judgment operation | movement in the mounting machine of embodiment. It is a flowchart for demonstrating the production standby state detection operation | movement in the mounting machine of embodiment. It is a flowchart of the first half part for demonstrating the air blow operation | movement in the mounting machine of embodiment. It is a flowchart of the latter half part for demonstrating the air blow operation | movement in the mounting machine of embodiment. It is a flowchart for demonstrating the waiting time measurement operation | movement of the production standby state in the mounting machine of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting machine 40 Air pipe line 41 Head 42 Adsorption nozzle 44 Negative pressure level detection sensor (negative pressure level measurement means)
46 Pressure pump (air blow means)
W substrate

Claims (8)

A mounting machine that performs mounting processing on substrates that are sequentially loaded,
Component suction means for sucking and sucking components and mounting them on a substrate;
An air blowing means for cleaning the inside of the air pipe by blowing air into the suction air pipe of the component suction means;
Air blow necessity determination means for determining whether or not air blow is necessary;
Production standby state detection means for detecting whether the mounting machine is in a non-operational production standby state between the mounting process and the next mounting process;
Air blow execution control for controlling the air blow unit based on information from the air blow necessity determination unit and the production standby state detection unit and performing air blow in the production standby state when it is determined that air blow is necessary. And a mounting machine. The air blow necessity determination means has air blow necessity level judgment means for judging a necessary level of air blow,
2. The mounting machine according to claim 1, further comprising: an air blow immediate execution unit that performs air blow regardless of whether or not the production level is in a standby state when the required level is higher than a predetermined level by the air blow required level determination unit. . A negative pressure level measuring means for measuring a negative pressure level in the air line;
The mounting according to claim 1 or 2, wherein the air blow necessity determination means includes first air blow necessity determination means for determining whether or not air blow is necessary based on the negative pressure level measured by the negative pressure level measurement means. Machine. The component suction means includes a suction nozzle that sucks a component, and a head that holds the suction nozzle in a replaceable manner.
The air blow necessity determination means determines whether or not air blow is necessary based on the number of times of suction by the suction nozzle, and third means determines whether or not air blow is necessary based on the number of times of suction of the head. The mounting machine according to claim 1, further comprising: an air blow necessity determination unit. A re-air blow necessity determination means for measuring the negative pressure level in the air pipeline where the air blow has been performed, and determining the necessity of re-air blow based on the negative pressure level;
The mounting machine according to any one of claims 1 to 4, further comprising: a re-air blow execution control unit that performs re-air blow when the re-air blow necessity determination unit determines that re-air blow is necessary. . Re-air blow repeating means for repeating the re-air blow until the negative pressure level in the air line becomes a predetermined level or less;
When the number of re-air blows reaches a predetermined number, and the negative pressure level in the air line is higher than the predetermined level, a notifying means for notifying that is provided. The mounting machine described. A mounting line that performs mounting processing by the mounting machine on the board sequentially loaded from the upstream equipment, and the mounting processed board is sequentially transported from the mounting machine to the downstream equipment,
The mounting machine is
Component suction means for sucking and sucking components and mounting them on a substrate;
An air blowing means for cleaning the inside of the air pipe by blowing air into the suction air pipe of the component suction means;
Air blow necessity determination means for determining whether or not air blow is necessary;
Production standby state detection means for detecting whether the mounting machine is in a non-operational production standby state between the mounting process and the next mounting process;
Air blow execution control for controlling the air blow unit based on information from the air blow necessity determination unit and the production standby state detection unit and performing air blow in the production standby state when it is determined that air blow is necessary. And a mounting line. A mounting machine in which components are sucked and sucked by the component sucking means and mounted on the substrate, and if necessary, air is blown into the suction air duct of the component sucking means to clean the inside of the air pipe Air blowing method,
An air blowing method for a mounting machine, comprising: performing air blowing when a mounting machine between a mounting process for a predetermined board and a mounting process for a next board is in a non-operating production standby state.

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