JPH02169062A - Profiling device for liquid material discharge syringe - Google Patents

Abstract

PURPOSE:To steadily and efficiently coat any part of a plate work with a liq. material without damaging the work by steadily coating the warped work with the liq. material in follow-up to the warpage without unwarping the work. CONSTITUTION:A movable plate 2 is fixed to a fixed plate 1 through a lifting guide means 3, and an acicular guide 6 with the spherical tip to be brought into contact with a work is fixed to the lower end of the syringe guide block 5 fixed to the movable plate 2. In addition, a syringe supporting plate 17 is fixed to the movable plate 2 through another lifting guide means 16, and the through hole 18 permitting the insertion of a syringe 8 into a syringe guide block 5 and a positioning means 19 for the syringe 8 are provided to the syringe supporting plate 17. Furthermore, height adjusting means 20 and 21 capable of adjusting the relative height of the syringe supporting plate 17 to the syringe guide block 5 and a spring means 22 for adjusting the working load on the acicular guide 6 to be brought into contact with the work are provided.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to the use of a base-like or cream-like electronic material, adhesive, or other liquid material filled in a syringe on a board such as a printed circuit board or a ceramic board. The present invention relates to a profiling device for a liquid material discharging syringe that allows constant application to a shaped workpiece without being affected by warping of the workpiece.

[Conventional technology]

When applying liquid material to a plate-shaped workpiece from the discharge nozzle attached to the tip of the syringe, if the plate-shaped workpiece is warped, the discharge nozzle and plate-shaped Because the distance between the workpiece and the workpiece changes, the state of application of the liquid material and, ultimately, the amount of application becomes uneven, conventionally, the warpage of the plate or workpiece is corrected by clamping or vacuum suction before applying the liquid material. to do,
Applying a liquid material to a plate-like work while correcting the warp by applying a local load to the workpiece has been widely done to create a deformed shape.

[Problem to be solved by the invention]

By the way, among such conventional techniques, correction of warpage by clamping or vacuum suction may not be applicable depending on the type of plate-shaped work, liquid material application conditions, etc., and correction of warp by local load may not be applicable due to the load. If the plate-shaped workpiece is likely to be damaged due to excessive application, and if this is to be corrected using a roller that rotates around a horizontal axis, the roller should be lifted from the workpiece together with the discharge nozzle each time the coating direction is changed. Then, it was necessary to restart the corrective coating after orienting the axis of rotation of the row in a direction perpendicular to the coating direction.

An object of the present invention is to solve all the problems caused by correcting the warpage of a plate-like workpiece by making it possible for a liquid material to steadily spread along the warp of the workpiece without correcting the warpage of the workpiece. Solution? The object of the present invention is to provide a profiling device for a liquid material discharging syringe that can be used for syringes discharging liquid materials.

[Means to solve the problem]

In the liquid material discharging syringe profiling device of the present invention, a movable plate is attached to a fixed plate via an elevating guide means, a syringe guide block is fixed to this movable plate, and a workpiece is attached to the guide block at its tip. A needle-like guide having a contacting spherical portion is fixed, and a syringe support plate is attached to the movable plate via another lifting/lowering guide means, and the syringe support plate supports insertion of the syringe into the syringe guide block. A through hole and a means for positioning the syringe are provided, and a height adjusting means is provided for adjusting the relative height of the syringe support plate to the syringe guide block, and a height adjusting means for adjusting the relative height of the syringe support plate to the syringe guide block, and a load acting on the needle guide that contacts the workpiece. and spring means for adjustment.

[For production]

In this profiling device, by actuating it with a cocoon break or other means, the needle-shaped guide that comes into contact with the plate-shaped workpiece can accurately follow the warpage of the plate-shaped workpiece by lifting and lowering the movable plate based on the action of the lifting guide means (2). By maintaining the relative position of the syringe inserted into the syringe guide block, the discharge nozzle attached to the tip of the syringe, and the needle guide in a predetermined state, the plate-shaped In other words, the distance between the discharge nozzle and the plate-like workpiece is always kept constant, and the liquid material can be distributed to any location without correcting the warp of the workpiece7, or in other words, without causing any inconvenience associated with the correction. Can be applied regularly.

(23) Here, by making the tip of the needle-like guide spherical, it is possible to sufficiently prevent the occurrence of scratches on the plate-shaped workpiece, and moreover, the application direction of the liquid material can be changed by interrupting the application. Changes can be made quickly and smoothly as needed without any hassle.

In addition, by adjusting the load supported by the needle-shaped guide using a spring means when the needle-shaped guide is in contact with the plate-shaped work, damage to the plate-shaped work and the yaw layer can be effectively prevented. At the same time, the needle-like guide can slide extremely smoothly on the plate-like workpiece.

By the way, the distance between the tip of the discharge nozzle and the tip of the needle-shaped guide, in other words, the distance between the tip of the discharge nozzle and the plate-shaped workpiece, is determined by the height adjustment means of the syringe support plate relative to the syringe guide protector. With one operation, it can be easily and arbitrarily adjusted.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention. In the figure, 1 indicates a fixed plate in a vertical position, and 2 indicates a movable plate located in front of the fixed plate 1. FIG.

Here, the movable plate 2 is attached to the fixed plate 1 via a lifting guide means 3, which may be a linear guide or the like.
A syringe guide block 5 is attached to the front side of the movable plate 2 via a mounting bracket 4, and a needle having a spherical tip is attached to the lower end of the syringe guide block 5. The shaped guides 6 are fixed respectively.

Here, the syringe guide block 5 has, for example, an insertion space 9 for a syringe 8 as shown by imaginary lines in the block body portion 7, as shown in a longitudinal cross-sectional view in FIG. embedding a temperature sensor 10 within the block body portion at a radially outward position;
A heater 11 is attached to the outer circumferential surface of the block body portion 7, and a circumferential surface protection material 2 spaced apart from the heater 11 in the radial direction and a top surface protection material 13 that contacts the top surface of the block body portion 7 are provided. According to the syringe guide block 5, it is also possible to control the temperature of the liquid material filled into the syringe. Note that when the syringe guide block 5 is constructed in this manner, it is preferable that the mounting bracket 4 for attaching it to the movable plate 2 be constructed of a heat insulating material.

Further, the needle guide 6 is fixed to the syringe guide block 5 by attaching a plate 14 on which the needle guide 6 is screwed and fixed to the lower surface of the syringe guide block 5, as shown in the longitudinal cross-sectional view in FIG. This can be done by Note that this needle-like guide 6 has a spherical portion 6a at its tip that contacts the plate-like workpiece, and the spherical portion 6a is connected to the discharge nozzle 1 attached to the tip of the syringe 8.
By making the diameter sufficiently small in relation to the diameter of the discharge nozzle 5, the spherical portion 6a can be positioned very close to the tip of the discharge nozzle 5 when the needle guide 6 is attached as described above. Accordingly, even if an obstacle exists near the required coating portion of the plate-shaped workpiece, the tracing function can be fully demonstrated up to a position extremely close to the obstacle.

As shown in FIG. 1, a syringe support plate I7 in a horizontal position is also attached to the front side of the movable plate 2 so as to be movable up and down via another elevating guide means 16. , a through hole 18 necessary for housing the main part of the syringe 8 into the syringe guide block 5, and a means for positioning the syringe 8 to the support plate 17, that is, a means for fixing it to the support plate 17, for example. A tightening screw 19 is provided, respectively. Here, when the lower surface of the flange 8a provided at the upper end 81 of the syringe 8 is brought into contact with the upper surface of the syringe support plate 17, the upper surface portion of the support plate can also function as a positioning means.

In order to make the relative height of such a syringe support plate 17 and, by extension, the syringe 8 positioned thereon, relative to the syringe guide block 5 adjustable as required,
Here, a screw mechanism 20 attached to a syringe support plate 17 is shown.
and an abutting plate 21 which is provided in a protruding manner on the movable plate 2 and supports the tip of the spindle 20a of the screw mechanism 20, forming a height adjusting means. Here, the screw mechanism 20 includes, for example, a screw mechanism of a micrometer, a spindle 20a having fine-pitch threads, and a fixing nut screwed into the spindle 20a.
and a graduated sleeve on the outside of the spindle 20a.

Furthermore, here, the fixed plate 2 and the movable plate 2 are interconnected by a coil spring 22 as an example of spring means, thereby supporting the weight of the movable part in the vertical direction. This prevents all the weight of the movable parts from acting on the needle guide 6 when it comes into contact with the plate-like workpiece, and in addition, the coil spring 22
By making at least one connecting end of the needle guide 6 movable up and down as required, the contact force of the needle guide 6 against the plate workpiece can be adjusted as appropriate.

By the way, when the required amount of weight of the movable part is supported by the coil spring 22, only the fixed weight of the difference between the movable r and b weights and the spring force is supported by the needle-shaped rod 6. However, when the needle-shaped guide 6 reaches the warped part of the plate-shaped workpiece, the IQ of the coil spring 22 decreases by an amount equivalent to the amount of warpage of the plate-shaped workpiece, and the weight supporting capacity changes. Even in such a case, the spring constant of the coil spring 22 should be reduced in order to minimize the change in the load supported by the needle guide 6 and to equalize the ability to follow the warp. Therefore, it is preferable to sufficiently reduce the change in the supported weight with respect to the change in deflection.

FIG. 3 is a diagram showing another example in which the coil spring 22 is used as a compression spring. A rod 26 passed through the rod 25 is fixed vertically, and a coil spring 22 is interposed between the movable plate bracket 25 and a nut 27 screwed onto the lower end of the rod 26.

According to this example, by moving the nut 27 up and down,
The magnitude of the load supporting force of the coil spring 22 can be adjusted as required.

Here, as shown in the figure, if a locking nut 27 is also screwed onto the rod 26 in addition to the nut 27, unexpected loosening of the nut 27 can be sufficiently prevented.

In the application example shown here, the NANDs 27 and 28 can be replaced by a ring fitted onto the rod 26 and a push screw which is screwed into this ring and whose tip abuts against the rod 26.

In the profiling device configured in this manner, all movable parts are connected to the coil spring 22 when not in use.
It is preferable to lift it to a predetermined height without relying on the spring force of the fixed vi1. Therefore, in the case shown in FIG. Attach the rod 30a to the lower surface of the movable plate 2.

The operation of the device described above will be explained below.

First, set the syringe 8 filled with liquid material in the profiling device attached to the manipulator, and
The relative height of the discharge nozzle 15 attached to the tip of the cylinder 30 and the needle-shaped guide 6 is adjusted by the screw mechanism 20, and the profiling device is then brought above the pre-cented plate-like workpiece, where the cylinder 30 is The rod 30a is brought to the retraction limit position.

At this time, the needle guide 6 stops when the spring force of the coil spring 22 is balanced with the movable part, the syringe 8, the discharge nozzle 15, and the liquid material in the syringe, and the spherical part 6a at the tip is still in contact with the plate-shaped workpiece. I haven't.

Thereafter, by gradually weakening the spring force of the coil spring 22, the spherical portion 6a of the needle guide 6 is brought into contact with the plate-shaped workpiece with the required force, and the spherical portion 6a is brought into contact with the plate-shaped workpiece with the required force, and the spherical portion The portion 6a is moved together with the discharge nozzle 15.

According to this, the needle-like guide 6 always slides accurately following the plate-like workpiece, regardless of whether or not warpage occurs therein, so that it maintains a predetermined relative relationship with the needle-like guide 6. Application of the liquid material to the plate-shaped workpiece by the maintained discharge nozzle 15 is also performed constantly regardless of whether or not the plate-shaped workpiece is warped.

Therefore, here, unlike in the prior art, it is possible to perform quantitative coating and other coatings as required without any problems caused by correcting the warpage of the plate-shaped workpiece.

Further, in this device, a spherical portion 6 is provided at the tip of the needle guide 6.
By providing the liquid material a, the liquid material can be applied without fear of scratching the plate-like workpiece, and the application direction can be changed quickly and smoothly without interrupting the work.

Here, if the diameter of the spherical part 6a is set to the minimum necessary value, by bringing the spherical part 6a as close as possible to the discharge nozzle 15, the spherical part 6a can be traced until it reaches the part near the obstacle. It can fully demonstrate its functions.

Furthermore, here, by appropriately adjusting the load acting on the needle-shaped guide 6 through the action of the coil spring 22, damage to the plate-shaped workpiece can be more fully prevented. By smoothing the sliding movement on the shaped workpiece, it is possible to further promote steady application of the liquid material.

Here, when an orthogonal two-axis robot is used as the manipulator and the liquid material is applied in a rectangular shape under the action of the robot, the spherical portion 6a of the needle guide 6 is
As shown in FIG. 4, it is preferable that the discharge nozzles 15 are arranged at an angle of 45 degrees to each orthogonal axis passing through the discharge nozzle 15. Accordingly, as shown in solid lines in FIG. When applying liquid material, by applying counterclockwise from the upper left corner, the spherical part 6a allows continuous rectangular application without crossing the previously applied part of the liquid material, reducing the tact time. Effective time reduction can be achieved.

(Effects of the Invention) Thus, according to the present invention, there is no inconvenience caused by correcting the warp of a plate-like workpiece, and even for a plate-like workpiece whose warp cannot be corrected, the workpiece can be straightened. The liquid material can be consistently and extremely efficiently applied to any location without fear of damage to the material.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the invention, and FIG. 2 is a perspective view showing an embodiment of the invention.
Figures 1 and 3 are longitudinal sections showing the syringe guide block; Figures 1 and 3 are side views showing other common examples of coil springs; Figure 4 is an explanatory view showing an example of how the spherical part is placed in relation to the discharge nozzle; Figure 5 is It is a figure which illustrates the application procedure of a liquid material. DESCRIPTION OF SYMBOLS 1... Fixed plate, 2... Movable plate, 3.16... Lifting guide means, 5... Syringe guide block, 6... Needle-shaped guide, 6a... Spherical part, 8...・Syringe, 15...Discharge nozzle, 17...Syringe support plate, ]8...Through hole, 19...Tightening screw, 20
... Screw mechanism, 2] ... Contact plate, 22 ... Coil spring.

Claims (1)

[Claims] 1. A fixed plate, a movable plate attached to the fixed plate via an elevating guide means, a syringe guide block fixed to the movable plate, and a tip portion fixed to the lower end of the syringe guide block and in contact with the workpiece. a spherical needle-shaped guide, a syringe support plate attached to the movable plate via another lifting guide means, and a through hole provided in the syringe support plate to allow insertion of the syringe into the syringe guide block. and a means for positioning the syringe, a height adjusting means for adjusting the relative height of the syringe support plate with respect to the syringe guide block, and a spring means for adjusting the load applied to the needle guide in contact with the workpiece. A profiling device for liquid material dispensing syringes.