JP3051268U - Conveyor type continuous solder flux cleaning device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a cleaning apparatus that automatically performs cleaning and drying while sequentially introducing and discharging objects to be cleaned that are different in type from one to another on the same line, a cleaning liquid and a dry gas are used. A means for supplying various optimum cleaning conditions such as type, temperature, time, ultrasonic irradiation intensity, shower intensity and the like in accordance with an individual object to be cleaned is obtained. In addition, the supply result is recorded as data and used for management. SOLUTION: A shower part A, an ultrasonic cleaning part B, a rinse cleaning part C, a liquid drain part D, and a hot air drying part E are arranged adjacently from an inlet side to an outlet side of a horizontally arranged conveyor 1. The cleaning container in which the object to be cleaned is fixed is hermetically sealed by the heads of the respective parts, and optimal control is performed for each cleaning container, and showering, ultrasonic cleaning, rinsing, draining, and hot-air drying are performed. In addition, a liquid reservoir F for storing several types of cleaning liquid and rinsing liquid.
To enable the supply of liquids that match the individual items to be cleaned,
Under the automatic control of the control unit G, the cleaning conditions matching the individual objects to be cleaned are obtained.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 In the present invention, the object to be cleaned to which various fluxes and solder balls used in the manufacturing process of the semiconductor composite device (module) are attached is converted into data by reading an identifier such as a bar code attached to the cleaning container. It relates to a solder flux cleaning device for substrates, which can be individually selected from among the cleaning methods selected and the cleaning process that meets the conditions and its control are performed on a conveyor.

[0002]

[Prior art]

 As shown in FIG. 4, in the conventional solder flux cleaning apparatus, an ultrasonic cleaning tank 41 and a rinsing cleaning tank 42 are provided side by side, and an object to be cleaned is charged into a net conveyor 40 and moved in a certain direction while moving up and down the gradient. This is a solder flux cleaning device that applies the same cleaning process to all the objects to be cleaned that are transported.

[0003]

[Problems to be solved by the invention]

 Depending on an object to be cleaned, a step using a cleaning tank is not always necessary. In that case, the cleaning liquid in the cleaning tank, which is no longer needed, was removed and cleaning was performed. For this reason, the production line for a large variety of small quantities requires filling and discharging of the cleaning solution, making it unsuitable for cost and time. According to the present invention, even a cleaning object requiring a different cleaning step of the cleaning liquid can be simultaneously introduced into the apparatus, and the cleaning liquid is supplied into the individual cleaning container and withdrawn after the completion of the step. It is a conveyor type continuous solder flux cleaning device that can individually handle the objects to be cleaned without the need for cleaning.

[0004]

[Means for Solving the Problems]

 In order to solve the above problem, the present invention includes a cleaning container to which an object to be cleaned is fixed, and the cleaning of the object to be cleaned while the container moves from an inlet side to an outlet side of a horizontally arranged conveyor. Construct a continuous washing device that completes drying inside the washing container and the washing head that is sealed with the washing container.

[0005] At the bottom of the cleaning container, a pedestal with a boss for fixing an object to be cleaned is provided, and an inclined surface is provided so that the peeled flux or solder ball interacts with the air flow or water flow in the container. Washing and drying, which is performed while the conveyor is paused, includes a shower section, an ultrasonic cleaning section, a rinsing section, a liquid drain section, and a hot air drying section, and the shower section has a shower nozzle, a vacuum suction nozzle, and an ultrasonic wave. Ultrasonic vibrator, jet nozzle and vacuum suction nozzle and liquid level sensor in cleaning part, jet nozzle and vacuum suction nozzle and liquid level sensor in rinse part, liquid drain nozzle and vacuum suction part in liquid drain part A cleaning head in which a rising nozzle and a hot air nozzle are fixed to the hot air drying section is adjacent to the cleaning head. The cleaning head rotates in conjunction with the conveyor operation, and has the feature of completely closing and opening cleaning containers of different heights.

[0006]

[Action]

 The object to be cleaned is fixed in a cleaning container and put into the apparatus.Based on the identifier data affixed to the container, selection and time of the cleaning liquid and the pressure of the pressure pump in the shower section, and selection of the cleaning liquid in the ultrasonic cleaning section are performed. The ultrasonic irradiation time and pressure of the pressure pump, the water level and time of the cleaning liquid and the pressure of the pressure pump in the rinsing process, and the hot air drying time are the blower temperature and time, and the process head control unit is instructed by the control unit to process. By doing so, it is possible to continuously feed objects to be cleaned, each of which has a different attachment, which was impossible with the conventional apparatus.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram of an embodiment according to claim 1 of the present invention, FIG. 2 is a basic perspective view of a cleaning container used in the present invention, and FIG. 3 is a cleaning and drying head for sealing the cleaning container on a conveyor. This is a specific example.

As shown in FIG. 1, in this embodiment, a conveyor 1 is disposed horizontally, and a shower unit A, an ultrasonic cleaning unit B, a rinsing unit C, and a shower unit A are installed adjacent to each other above the conveyor 1. It comprises a cutting section D, a hot air drying section E, a liquid reserve F, and a control section G.

The control unit G controls the position of the conveyor 1, and also retrieves the height of the washing container and the data unique to the object to be washed from a database input in advance by an identifier reading sensor such as a barcode reader of the shower unit A, and Controls the equipment installed in the

The conveyor 1 is disposed horizontally from the entrance side to the exit side, and is disposed so as to be able to circulate via a drive source (not shown) or the like. Conveyor 1 is repeatedly transported and stopped in synchronization with the start and end of all the cleaning steps of the loaded cleaning container, and the position is controlled so that the container is transported immediately below the cleaning head. At the start of the process, the washing head 3 is lowered by the up / down motor 38, and the washing or drying is started by closing the washing container. After the washing, the washing head 3 is raised and the washing container is opened.

As shown in FIG. 2, the cleaning container 2 is a container made of a heat-resistant and pressure-resistant material, and has a mesh-shaped or slit-shaped pedestal on the inner bottom surface through which air or liquid can easily pass. An object-to-be-cleaned fixing boss 36 is fixed to the upper end portion 35. The pedestal 35 is provided with an inclination so that the flux, solder balls and the like adhering to the object to be cleaned are peeled off and easily fall down toward the container bottom.

An identifier 37 such as a bar code is attached to the side surface of the cleaning container 2 to urge individual identification of the cleaning container 2 to which the object to be cleaned is fixed. A cleaning head 3 for fixing and sealing the cleaning container 2 as shown in FIG. 3 is provided in each part, and a feed screw shaft 39 is moved by a vertical motor 38 according to an instruction from a control panel 43 in conjunction with the operation of the conveyor 1. Rotate to lower and seal the cleaning head 3 at the start of each process, and raise and open the cleaning head 3 at the end of each process.

In the embodiment, the liquid reserve section F is provided with three types of cleaning liquid reserve tanks 25 and one type of rinsing liquid reserve tank 26, and also stores the required cleaning liquid for each cleaning container 2 on the conveyor 1. A number of electromagnetic pumps are provided to distribute and collect the washing liquid. Further, a filter 20 for separating the cleaning liquid or the rinsing liquid sent from the vacuum pump 17 from the dirt is provided in the pipe on the collecting side.

In the shower section A, an identifier reading sensor 9 such as a CCD camera for providing information to the control panel in the first step of feeding, a shower head 3 to which a shower nozzle 11 and a vacuum suction nozzle 10 are fixed, and a pressure pump 18 And a vacuum pump 17 are provided. The shower process is performed by injecting the cleaning liquid for a time instructed by the control unit, and the time for sucking the cleaning liquid is delayed for several tens of seconds and is completed. The pressure of the pressure pump can be changed according to the object to be cleaned.

The ultrasonic cleaning section B controls the ultrasonic vibrator 12, the vacuum suction nozzle 10, the jet nozzle 13, the ultrasonic cleaning head 5 to which the liquid level sensor 14 is fixed, the pressure pump 18, and the cleaning liquid. A heater 19, a vacuum pump 17, a filter 20, and an ultrasonic cleaning and circulating electromagnetic valve 33 for setting the temperature to the temperature specified by the panel 43 are provided.

In the ultrasonic cleaning step, first, the heater 19 is set to a set temperature according to an instruction from the control panel, the ultrasonic cleaning liquid supply electromagnetic valve 29 is turned on, and the pressurizing pump 18 is turned on so that the liquid level sensor 14 recognizes the cleaning liquid. Then, the liquid supply electromagnetic valve 29 is turned off, the liquid discharge electromagnetic valve 30 is turned off, the circulation electromagnetic valve 33 is turned on, and the cleaning liquid in the cleaning container 2 is circulated through the filter 20.

The ultrasonic vibrator 12 is turned ON for a time instructed by the control panel, and ultrasonic cleaning is performed by adding a water flow by the jet nozzle 13. After a lapse of time, the ultrasonic vibrator 12 is turned off, the pressure pump 18 is turned off, the circulating electromagnetic valve 33 is turned off, the drainage electromagnetic valve 30 is turned on, and then the vacuum pump 17 is turned on to collect the cleaning liquid. It is also possible to change the pressure of the pressure pump 18 according to the object to be cleaned.

In the rinsing section C, a rinsing head 6 to which a jet nozzle 13, a vacuum suction nozzle 10 and a liquid level sensor 14 are fixed, a pressure pump 18, a heater 19, a vacuum pump 17, a filter 20 and a rinse A cleaning circulation electromagnetic valve 34 is provided.

In the rinsing process, first, the heater 19 is set to a set temperature in accordance with an instruction from the control panel 43, the rinse cleaning liquid supply electromagnetic valve 31 is turned on, the pressurizing pump 18 is turned on, and the liquid level sensor 14 recognizes the rinsing liquid. Then, the liquid supply electromagnetic valve 31 is turned off, the drainage electromagnetic valve 32 is turned off, the circulation electromagnetic valve 34 is turned on, and the rinsing liquid in the washing container 2 is circulated through the filter 20.

After a time instructed by the control panel, the pressurizing pump 18 is turned off, the circulating electromagnetic valve 34 is turned off, the drainage electromagnetic valve 32 is turned on, and then the vacuum pump 17 is turned on to remove the rinsing liquid. to recover. It is also possible to change the pressure of the pressure pump 18 according to the object to be cleaned.

The liquid draining section D is provided with a liquid draining head 7 to which a liquid draining nozzle 15 and a vacuum suction nozzle 10 are fixed, an air filter 22, an air compressor 21, a vacuum pump 17, and a filter 20. ing. In the liquid draining step, after the vacuum pump 17 is turned on and the air compressor 21 is turned on, the vacuum pump 17 is turned off and the air compressor 21 is turned off after an instruction time from the control panel 43. It is also possible to change the pressure of the air compressor 21 according to the object to be cleaned.

The hot air drying section E includes a hot air drying head 8 to which the hot air nozzle 16 is fixed, a blower 24, an air heater 23, and an air filter 22. The air heater 23 and the blower 24 are turned on for the time specified by the control unit.

In the above embodiment, the cleaning container having the structure shown in FIG. 2 is employed. However, the present invention is not limited to this. For example, the pedestal 35 may have a horizontal inclination. Further, the shower part A, the ultrasonic cleaning part B, the rinsing part C, the liquid drain part D, and the hot air drying part E are each constituted by a single part, but a plurality of identical parts are provided. But you can.

[0024]

According to the present invention, the following remarkable effects are obtained. (1) Since a washing container is prepared for each object to be cleaned, there is no limitation due to the shape of the object to be cleaned, and the applicable range is widened. It can be done effectively. (2) Since the washing is performed in the washing container, there is no need for a washing tank, and only a small amount of washing liquid is required, and washing is always performed with fresh washing liquid, thereby saving costs. Since each process is arranged in series and adjacently along the conveyor, the overall structure becomes smaller.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

FIG. 2 is a perspective view of a cleaning container used in the embodiment of the present invention.

FIG. 3 is a perspective view of a cleaning head used in the embodiment of the present invention.

FIG. 4 is a configuration diagram showing a schematic structure of a conventional cleaning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor 2 Cleaning container 3 Cleaning head 4 Shower head 5 Ultrasonic cleaning head 6 Rinsing cleaning head 7 Draining head 8 Hot air drying head 9 Identifier reading sensor 10 Vacuum suction nozzle 11 Shower nozzle 12 Ultrasonic transducer 13 Jet nozzle 14 Liquid level sensor 15 Liquid drain nozzle 16 Hot air nozzle 17 Vacuum pump 18 Pressurizing pump 19 Heater 20 Filter 21 Air compressor 22 Air filter 23 Air heater 24 Blower 25 Cleaning liquid reserve tank 26 Rinse liquid reserve tank 27 Shower supply electromagnetic valve 28 Shower discharge Liquid electromagnetic valve 29 Ultrasonic cleaning liquid supply electromagnetic valve 30 Ultrasonic cleaning liquid discharge electromagnetic valve 31 Rinse cleaning liquid supply electromagnetic valve 32 Rinsing cleaning liquid discharge electromagnetic valve 33 Ultrasonic cleaning circulation electromagnetic valve 34 Rinse cleaning circulation electromagnetic Valve 35 Pedestal 36 Fixed boss 37 Identifier 38 Vertical motor 39 Feed screw shaft 40 Net conveyor 41 Ultrasonic cleaning tank 42 Rinse cleaning tank 43 Control panel

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI H01L 21/304 351 H05K 3/26 A H05K 3/26 G06F 7/00 U

Claims (2)

[Utility model registration claims] 1. A cleaning device in which a conveyor, a cleaning container for fixing an object to be cleaned on the conveyor, a shower unit, an ultrasonic cleaning unit, a rinsing cleaning unit, a liquid draining unit, and a hot air drying unit are hermetically sealed. A head, a sensor for reading an identifier affixed to the cleaning container, a vertical motor for supporting the cleaning head and vertically moving in conjunction with a conveyor, a nozzle fixed to the cleaning head, an ultrasonic vibrator or a liquid level sensor, A drainage pump, an electromagnetic valve for controlling the supply and drainage of the cleaning liquid,
A solder flux cleaning device comprising a controller that performs all the above-mentioned controls in conjunction with a conveyor. 2. A cleaning container is provided for each of the objects to be cleaned, and a large cleaning tank fixed during the cleaning process is not required, and an identifier such as a bar code attached to the cleaning container is read, and each of the objects to be cleaned is read. Selection and control of the cleaning process based on the cleaning control information, selection and control of the cleaning solution, selection and control of the shower temperature and time, selection and control of the ultrasonic irradiation time, and selection and control of the drying temperature and time. Solder flux cleaning equipment.