JP2004321985A - Float for dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a float for a dispenser in which a magnetic body for liquid level detection in a syringe can be detached easily, with respect to a liquid material discharge apparatus. <P>SOLUTION: A cylindrical float body having cyclic projections to be brought into contact with the inner wall of the syringe of the liquid material discharge apparatus in the upper and lower edge parts and a bowl-like liquid contact part are formed unitedly, and a cyclic magnetic installation groove for detection formed in the inner circumferential wall of the float body part and a metal tape rolling groove formed between the upper and the lower cyclic projections in the float body part are made usable as magnetic body installation parts. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a float that constitutes a detection unit that presses and discharges a liquid material in a syringe and detects a remaining amount of the liquid material in a dispenser that quantitatively discharges the liquid material filled in the syringe.
[0002]
[Prior art]
In a conventional dispenser, compressed air is supplied into the syringe through the path, the float and the viscous fluid are pushed, the viscous fluid is discharged from the nozzle attached to the nozzle holder through the tip of the syringe, and is applied to a workpiece such as a plate material. In order to detect the remaining amount of viscous fluid in the syringe, a magnetic material is provided in the float, and the liquid in the syringe is cooperated with a sensor arranged on the side of the syringe. The position was detected (Patent Document 1).
[0003]
However, in the configuration as described above, since the float is made of a cylindrical shape having no elastic portion and made of a hard material, in order to prevent the float from being caught in the syringe, A gap had to be provided between the diameter and the inner diameter of the syringe. For this reason, when the viscous fluid in the syringe is pushed by the float, the viscous fluid leaks from the gap between the float and the syringe and remains attached to the inner wall of the syringe. It had the problem of not matching the remaining amount.
[0004]
Then, the thing which formed the contact part which has elasticity in the float main body, and attached the separate magnetic material to the inner side was proposed (patent document 2), and the above-mentioned subject was able to be solved. It must be screwed to the float body and must be finely crafted.
[0005]
[Patent Document 1]
JP 62-294464 A [Patent Document 2]
JP-A-2001-162206 [0006]
[Problems to be solved by the invention]
This invention makes it a subject to provide the float for dispensers which can attach or detach easily the magnetic body for a liquid level detection in a syringe.
Moreover, this invention makes it a subject to provide the float for dispensers which can separate a resin material part and a magnetic body part easily, and can reuse a magnetic body as needed.
Still another object of the present invention is to provide a general-purpose dispenser float that includes attachment portions corresponding to a plurality of liquid level detection magnetic bodies and that can be easily attached and detached.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the float for a dispenser according to the first aspect of the present invention is formed integrally with a cylindrical main body provided with annular projections at the upper and lower ends that contact the inner wall and a bowl-shaped liquid contact part. The magnetic body attaching portion is formed on the main portion, and the invention according to claim 2 is the invention according to claim 1, wherein the magnetic body attaching portion is an inner peripheral wall of the main portion. In the invention of claim 3, the magnetic body mounting portion according to claim 1 is formed between the upper and lower annular protrusions of the main body portion. It is a groove for winding a metal tape.
[0008]
[Action]
By easily attaching and detaching the detection magnet, it is possible to easily separate the resin material portion from the magnetic material portion, and it is possible to configure a dispenser float that can reuse the magnetic material as necessary.
By providing attachment parts that correspond to multiple levels of liquid level detection magnetic material, that is, the float body can be attached to either a detection magnet or a detection metal tape. It can handle multiple dispensers.
[0009]
【Example】
Details of the present invention will be described in the examples. The present invention is not limited by these examples.
[0010]
Example 1
Embodiments of the float used in the viscous fluid coating apparatus of the present invention will be described below with reference to the drawings.
A float main body 10 shown in FIG. 1 is made of a hard synthetic resin, and a cylindrical main body provided with annular protrusions in close contact with an inner wall at upper and lower ends and a bowl-shaped liquid contact part are integrally formed. .
The outer diameter of the annular protrusion is set to a dimension that allows the float to slide lightly inside the syringe.
Then, a detection magnet mounting groove 11 is formed in the vicinity of the upper end of the inner peripheral wall of the main body, and a detection metal tape winding groove 12 is formed on the peripheral surface between the annular protrusions provided on the upper and lower ends of the main body. Yes.
[0011]
The detection magnet 13 mounted in the detection magnet mounting groove 11 has a disk shape, and its diameter is slightly larger than the inner diameter of the main body of the float body 10. The depth of the detection magnet mounting groove 11 into which the detection magnet 13 is fitted is determined so that the cross-sectional diameter of the main portion of the groove is equal to the outer diameter of the detection magnet 13. FIG. 2 shows a state in which the detection magnet 13 is mounted on the float 10.
[0012]
The detection magnet 13 is attached to and detached from the float body 10 having the above-described configuration as shown in FIG.
"attachment"
Since the main body portion can be deformed when the float body 10 is taken out from the syringe, when the detection magnet 13 is pushed perpendicularly to the opening, the opening portion is slightly deformed to allow the detection magnet 13 to be pushed in. When the detection magnet 13 is rotated 90 degrees when the maximum diameter portion of the detection magnet 13 reaches the groove portion 11 by being pushed in, the peripheral portion is fitted into the detection magnet attachment groove 11 and the attachment is completed.
"removal"
In order to remove the disk-shaped magnet from the coupled state as described above, when the eccentric position of the detection magnet 13 is pushed, the detection magnet 13 rotates around the maximum diameter portion to be in a rising state and the float main body portion. It can be removed by grasping it with a finger or a tool.
In addition, the magnet can be removed without using the liquid body to move the float body 10 moved to the tip of the syringe from the syringe.
[0013]
When the metal tape for detection 14 is used, the depth of the groove 12 is determined so that the outer peripheral surface of the wound metal tape does not protrude outward from the annular protrusion. FIG. 3 shows a state where the detection metal tape 14 is mounted on the float 10. Since the magnetic body mounting portion is a groove for winding a metal tape for detection formed between the upper and lower annular projections of the main body portion, the magnetic tape can be easily attached and detached by peeling or peeling the metal tape.
[0014]
FIG. 5 is a schematic view of a liquid material discharge apparatus using the float of the present invention. Air compressed by the dispenser 5 is supplied into the syringe 2, the float 1 (10) and the viscous fluid are pushed, and the syringe 2. A viscous fluid is discharged from the nozzle 3 attached to the nozzle holder through the tip, and the viscous fluid is applied to the work 7 such as a plate material. The float 1 is used to detect the remaining amount of the viscous fluid in the syringe 2. In (10), a magnetic body 13 is provided, and the liquid level in the syringe 2 is detected in cooperation with the sensor 4 disposed on the side of the syringe 2 so that the remaining amount of liquid material in the syringe 2 is small. Then, the control device 8 transmits a stop signal to the dispenser 5 and the XY-table 6.
[0015]
【The invention's effect】
As described above, according to the present invention, the detection magnet can be attached to and detached from the float body by a simple operation.
Further, since both the detection magnet and the detection metal tape can be attached to the float body, any of them can be appropriately selected and used according to the purpose.
Moreover, this invention can provide the float for dispensers which can separate a resin material part and a magnetic body part easily, and can reuse a magnetic body as needed.
[Brief description of the drawings]
FIG. 1 is a drawing showing a float body.
FIG. 2 is a drawing showing a flow with a detection magnet.
FIG. 3 is a drawing showing a float with a metal tape for detection.
FIG. 4 is a drawing showing how to remove a detection magnet.
FIG. 5 is a schematic view of a liquid material discharge apparatus using the float of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Float 2 Syringe 3 Nozzle 4 Sensor 5 Dispenser 6 XY-table 7 Work piece 8 Control apparatus 10 Float main body 11 Detection magnet mounting groove (for inner wall)
12 Detection metal tape winding groove 13 Detection magnet 14 Detection metal tape

Claims (3)

A float in which a cylindrical main body provided with annular protrusions in contact with the inner wall at the upper and lower ends and a bowl-shaped liquid contact part are integrally formed, and a magnetic body mounting part is formed on the main body. Characteristic dispenser float. 2. The dispenser float according to claim 1, wherein the magnetic body mounting portion is an annular detection magnet mounting groove formed on an inner peripheral wall of the main body. The dispenser float according to claim 1 or 2, wherein the magnetic body attaching portion is a groove for winding a metal tape for detection formed between upper and lower annular projections of the main portion.

Images