JP2982640B2 - Cream solder supply device and cream solder supply method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a novel cream solder supply.
The present invention relates to an apparatus and a cream solder supply method . In detail, a new cream solder supply device that can supply cream solder without any trouble and without lowering the quality
It is intended to provide a cream solder supply method .

[0002]

2. Description of the Related Art For example, as means for supplying a high-viscosity material such as cream solder, there are a manual method, a syringe method using an automatic dispenser, and an automatic monopump method.

[0003]

However, in manual supply, the cream solder printing machine is stopped and a small amount of cream solder is supplied from inside the container using a spatula or the like. There is a problem in that the machine must be stopped, resulting in a decrease in the operation rate.

[0004] In addition, the effect of lead on the human body poses a problem because of manual operation.

[0005] In the supply by the automatic dispenser, it takes time to refill the syringe, and since the inside becomes high pressure, the quality of the cream solder is deteriorated such as separation of the solder and the flux, and the quality is deteriorated. There's a problem.

Further, the supply by the automatic monopump is the same as that of the automatic dispenser in that the internal pressure becomes high and the cream solder deteriorates, and the internal must be cleaned when the type of the cream solder is switched. In addition, there is a problem that it takes time and effort.

[0007]

According to the present invention, there is provided a cream solder supplying apparatus for supplying cream solder to a cream solder printing machine for printing cream solder on a printed circuit board or the like. The cream solder is stored, the lower end is open and the upper end is
The A supported bag body to the base plate, cream solder and cream solder container does not have to come out of the bag body by gravity stops to bag the body by its own viscosity, base
A bag that is placed opposite the plate and has a bag
A roller for squeezing the cream solder from the lower end opening of the cream solder container by nipping and moving the cream solder container downward; and a cream solder squeezed from the cream solder container into the cream solder container. A thread cutter device for separating the solder paste from the remaining cream solder.The cream solder supply method of the present invention is a cream solder supply method for supplying cream solder to a cream solder printing machine for printing cream solder on a printed circuit board or the like. , A base plate containing cream solder, with its lower end open and its upper end suspended
A cream solder container that is supported by a cream solder container that does not come out of the bag due to its own viscosity due to its own viscosity, facing the base plate.
It is sandwiched between the base plate and the rollers
The solder solder container by moving the
The cream solder squeezed out from the cream solder container is separated from the cream solder remaining in the cream solder container by a thread cutter device.

[0008]

Therefore, according to the present invention, a high-viscosity material can be supplied without requiring any manpower, and there is no need for refilling and the like, and the workability is good. In addition, there is no deterioration in quality, and there is no influence of lead on the human body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes a cream solder supply apparatus of the present invention and a cream solder supply apparatus.
The details of the method of supplying the solder for the solder will be described with reference to the illustrated embodiment.

In the illustrated embodiment, the present invention is applied to a cream solder supply device in a cream solder printing machine.

1 is a cream solder printing machine, 2 is a printing screen, 3 and 4 are squeegees, and squeegees 3 and 4
Is moved vertically by the cylinders 3a and 4a, respectively.
Further, the entire squeegee block 5 is moved in the front-rear direction (the left side in FIG. 1 is defined as the front and the right side is defined as the rear. In the following description, the direction is referred to as this direction). .

Reference numeral 6 denotes a cream solder supply device arranged above the cream solder printing machine 1.

Reference numeral 7 denotes a base plate of the cream solder supply device 6. Side plates 8 and 8 are provided upright from both left and right sides of the base plate 7. An upper surface plate 9 is fixed between the upper ends of the side plates 8 and 8 in a bridging manner.

Reference numeral 10 denotes a base plate extending downward from the front edge of the upper plate 9, and the lower end thereof is fixed to the front end of the base plate 7. Thus, the base plate 10 is located at a position slightly protruding from the front end of the base plate 7. A clamper 1 is provided at the upper end of the front surface of the base plate 10.
1 and 11 are provided. Numeral 12 is a cover plate, both sides of which are supported by the front end of the side plate 8 and are located so as to cover the base plate 10 with a slight distance from the front side.

Reference numeral 13 denotes a movable plate, which is provided at a position close to both sides of a main portion 14 having a long plate shape in the left-right direction.
5 and 15 are integrally suspended, and support holes 15a and 15a are formed in the support portions 15 and 15 so as to penetrate in the front-rear direction.

Bearing members 16 and 16 are fixed to the left and right ends of the moving plate 13, and the upper and lower ends of the base plate 7 are positioned slightly behind and slightly to the left and right of the base plate 10.
Guide shafts 17, 17 supported by the upper and lower plates 9 are slidably inserted into the bearing members 16, 16.

Reference numeral 18 denotes a nut member fixed to a central portion of the main portion 14 of the movable plate 13 in the left-right direction.

Reference numerals 19, 19 denote support blocks. Supported shafts 20, 20 project rearward from the rear ends of the support blocks 19, 19, and the supported shafts 20, 20 support the moving plate 13 by the supporting portions. 15, 15 are slidably inserted from the front into the support holes 15a, 15a. 21, 21 are the support blocks 19, 19 and the support portion 1 of the movable plate 13.
5 and 15 are tension coil springs stretched between the support blocks 19 and 21.
19 is biased backward.

Reference numeral 22 denotes a pressing roller.
It is rotatably supported by the support blocks 19, 19 via 3, 23.

Reference numeral 24 denotes a screw shaft rotatably supported at both upper and lower ends by the upper plate 9 and the base plate 7, and the nut member 18 supported by the moving plate 13 is screwed to the screw shaft 24. Have been.

Reference numeral 25 denotes a speed control motor fixed to the center of the rear part of the top plate 9, and a gear 26 is fixed to an output shaft 25a of the speed control motor.
4 is engaged with a gear 27 fixed to the upper end. When the motor 25 rotates, the gears 26, 27
The nut member 18 is fed by the rotation of the screw shaft 24, and the moving plate 13 is guided by the guide shafts 17, 17 and is moved in the vertical direction.

Reference numeral 28 denotes a slit plate fixed to the upper end of the screw shaft 24.
The slit of the slit plate 28 is detected by a photoelectric sensor 29 provided in the vicinity of
The number of rotations of the screw shaft 24 is counted, and the feed amount of the moving plate 13 is controlled.

Numeral 30 cuts the remainder of the cream solder 38
A thread cutter device for separating the arm member 31 having a U-shape as viewed in a plane. The center of a base piece 32 of the arm member 31 is fixed to a front end of a piston 34 of an air cylinder 33 fixed on the base plate 7. . Then, the left and right arm pieces 35 of the arm member 31,
A steel wire 3 with a wire diameter of 0.1 to 0.2 mm between the tips of 35
6 is stretched. Thus, the air cylinder 33
Is driven, the arm member 31 is moved in the front-rear direction.

Reference numerals 37, 37 denote height sensors disposed at both left and right ends of the portion between the squeegees 3 and 4, for detecting the height of the cream solder 38 on the printing screen 2. is there.

Next, the operation of the cream solder supply device 6 will be described.

Reference numeral 39 denotes a bag as a cream solder container in which the cream solder 38 is filled.
Is formed of a synthetic resin or the like.

The upper portion of the bag body 39 is positioned on the base plate 10 by pins 40, 40, and the upper end portion is supported by the base plate 10 by clampers 11, 11. Then, the lower end of the bag body 39 is opened.
Note that even if the lower end of the bag 39 is opened,
Is stopped in the bag by its own viscosity and does not come out of the bag by gravity.

The moving plate 13 is located at the upper end of the moving range, and the pressing roller 22 supported by the moving plate 13 faces the base plate 10 with the upper end of the bag 39 interposed therebetween. . The compression roller 22 is biased rearward at both ends by tension coil springs 21, 21.
A pressure of about 10 kg in the direction of the base plate 10 is generated at both ends of the base 2.

When the height sensors 37, 37 detect that the height of the cream solder 38 on the printing screen 2 has fallen below a predetermined value, the speed control motor 25 is driven, whereby the screw shaft 24 is driven. The rotation of the moving plate 13 is caused to descend.

When the moving plate 13 is lowered, the pressing roller 22 supported by the moving plate 13 is lowered, and the cream solder 38 in the bag 39 is squeezed out from the lower end of the bag 39 by the pressing roller 22. Then, when a predetermined amount of the cream solder 38 is discharged from the lower end of the bag body 39 (the discharge amount of the cream solder 38 from the bag body 39 is converted into the descending amount of the pressing roller 22, The amount by which the pressing roller 22 is lowered is determined by the photoelectric sensor 29 as the slit plate 2.
8 is detected by the number of rotations of the screw shaft 24 detected from the rotation of No. 8. ), The arm member 31 is advanced by the driving of the air cylinder 33, and the steel wire 36 becomes the bag 3 of the cream solder 38.
9 is cut from the other portion, and the cut cream solder 38 is supplied onto the printing screen 2.

It is to be noted that the height sensors 37, 37 are supplied by one supply.
Does not determine that the required quantity has been supplied,
The squeeze roller 22 is lowered to perform the above-described series of operations.

Then, the cream solder 38 is printed while the squeegee block 5 is moved back and forth again.
When the printing progresses and the amount of the cream solder 38 on the printing screen 2 becomes equal to or less than the predetermined amount again, the pressing roller 22 further descends, and as described above, the predetermined amount of the cream solder 3
8 is provided on the printing screen 2.

When the pressing roller 22 reaches the lower end of the moving range, that is, when all the cream solder 38 in the bag 39 has been supplied, this is detected by a sensor (not shown), The operator is notified of this by lighting or blinking, or by sounding a buzzer, and prompts the user to replace the bag 39.

According to the cream solder supply device 6 as described above, the cream solder 38 can be attached to the supply device 6 without being transferred from the bag body 39 to the syringe or the pump, and the preparation time is reduced. Also, there is no waste of cream solder generated at the time of transfer.

Further, the automatic supply to the cream solder printing machine 1 is possible, so that the cream solder printing machine 1 can be operated continuously, and the productivity is improved.

Further, there is no fear that the quality of the cream solder is changed as in the case of using an automatic dispenser or an automatic monopump.

Further, even when the type of the cream solder is changed, the type can be easily changed without the need for cleaning or the like.

Further, a predetermined amount of cream solder can be easily and reliably supplied by cutting off with a thread cutter.

[0039]

As is apparent from the above description, the cream solder supply apparatus of the present invention is a cream solder supply apparatus for supplying cream solder to a cream solder printing machine for printing cream solder on a printed circuit board or the like. Solder was stored, the lower end was opened and the upper end was suspended
A bag body that is supported on the base plate, cream solder and cream solder container does not have to come out of the bag body by stops gravity to the bag body by its own viscosity, base plate and
Cream that is placed opposite to and has a bag between the base plate
A roller that squeezes the cream solder from the lower open end of the cream solder container by pinching and moving the solder container downward, and a thread that separates the cream solder squeezed from the cream solder container from the cream solder remaining in the cream solder container. A cream solder supplying method for supplying cream solder to a cream solder printing machine for printing cream solder on a printed circuit board or the like, wherein the cream solder is stored and a lower end is provided. Is open and its upper end is suspended.
A cream solder container that is supported by a cream solder container that does not come out of the bag due to its own viscosity due to its own viscosity, facing the base plate.
It is sandwiched between the base plate and the rollers
The solder solder container by moving the
The cream solder squeezed from the cream solder container is separated from the cream solder remaining in the cream solder container by a thread cutter device.

Therefore, in the present invention, a high-viscosity material can be supplied without requiring any manpower, and there is no need for refilling and the like, and the workability is good. In addition, there is no deterioration in quality, and there is no influence of lead on the human body.

It should be noted that the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment for carrying out the present invention, and the technical features of the present invention will be described below. The scope should not be construed as limiting.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention ,
This figure is a schematic plan view.

FIG. 2 is a side view partially cut away.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a sectional view taken along the line VV in FIG. 2;

FIG. 6 is a perspective view conceptually showing a situation where cream solder is squeezed out by a pressing roller.

FIG. 7 is a schematic perspective view showing a state in which the cream solder discharged from the bag body is cut by the thread cutter together with FIG. 8;

FIG. 8 is a schematic side view showing, in order, (a), (b), and (c) the discharge of the cream solder from the bag and the cutting by the thread cutter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cream solder printing machine 6 Cream solder supply device 10 Base plate 22 Roller 30 Thread cutter device 38 Cream solder 39 Cream solder container

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B05C 5/00, 5/02 B05C 11/10 B05D 1/26 B05D 7/24 301 B23K 3/06 H05K 3 / 34 505 B41F 15/08 303 B41F 15/40

Claims (2)

(57) [Claims] 1. A cream solder supply device for supplying cream solder to a cream solder printing machine for printing cream solder on a printed circuit board or the like, wherein the cream solder is stored, the lower end is opened, and the upper end is suspended.
A bag body that is supported by the base plate which is, cream solder and the solder paste container is not coming out of the bag body by stops gravity bag body by its own viscosity, the base plate and opposed to distribution Installed between the base plate and above
Hold the bag of cream solder container and move it down.
And a thread cutter device for separating the cream solder squeezed from the cream solder container from the cream solder remaining in the cream solder container. Characteristic cream solder supply device. 2. A cream solder supply method for supplying cream solder to a cream solder printing machine for printing cream solder on a printed circuit board or the like, wherein the cream solder is stored, the lower end is opened, and the upper end is suspended.
A bag body that is supported by the base plate to have been made, the cream solder cream solder container does not have to come out of the bag body by gravity stops to bag the body by its own viscosity, base
Roller placed opposite to the base plate
Between the cream half by moving the roller downward.
The cream solder is squeezed from the lower end opening of the rice container, and the cream solder squeezed from the cream solder container is separated from the cream solder remaining in the cream solder container by a thread cutter device. Solder supply method.