JPH05168997A - Dispenser - Google Patents

Abstract

PURPOSE:To provide a dispenser which enables stable coating by independently controlling temperature of a nozzle and each region of a syringe which is divided into a plurality of regions. CONSTITUTION:A nozzle 2 and a syringe 1 which is divided into a plurality of regions are provided and temperature of each region thereof is controlled by a temperature regulator. For example, when there are two regions, i.e., the nozzle 2 and syringe 1, the syringe 1 is maintained at an optimum preservation temperature of material by a temperature regulator B4 and the nozzle 2 is kept at an optimum coating temperature of material by a temperature regulator A3. Or by conducting temperature control during operation and stop of coating by means of the regulator A3, viscosity of material of high viscosity can be made constant and stringiness is avoided, thereby enabling stable coating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispenser, and more particularly to a dispenser for applying an adhesive, solder or the like onto a mounting substrate before mounting electronic components in surface mounting.

[0002]

2. Description of the Related Art The temperature control function of a syringe in a conventional dispenser will be described with reference to FIGS. 3 (a) and 3 (b). In FIG. 3A, 1 is a syringe, 2
Is a nozzle, 6 is a temperature control device D, and in FIG. 3B, 7 is a temperature control device E.

The operation of the dispenser having the above structure will be described below.

In the configuration of the syringe 1 capable of pushing out the material by applying pressure and the nozzle 2 attached to the tip of the syringe 2, in order to make the viscosity of the material constant at the time of application, as shown in FIG. The temperature control device D6 is attached to the periphery to keep the nozzle 2 portion at the optimum coating temperature. Further, in FIG. 3B, a temperature adjusting device E7 is attached so as to cover the entire syringe 1, and the entire syringe 1 is held at the optimum application temperature.

[0005]

However, in the above configuration, all the temperatures controlled by temperature control are the application temperature, and in the syringe 1 sufficiently separated from the nozzle 2, that is, in the case of FIG. 3 (b). , The temperature of the coating is controlled up to the material of the part that is not directly involved in one coating, and FIG.
In the case of (a), materials other than the vicinity of the nozzle 2 are in a state of being affected by the outside air temperature. Therefore, for materials with a large difference between the optimum application temperature and the optimum storage temperature, clay changes or composition changes occur in the part that is sufficiently away from the nozzle 2 and is kept at the application temperature for a long time when used for a long time. However, stable application cannot be performed. Further, since the coating temperature is constantly set in the nozzle 2 portion, there is a problem that the material drips from the tip portion of the nozzle 2 during the stop.

The present invention solves the above problems, and an object of the present invention is to provide a dispenser for maintaining stable material conditions and performing stable coating.

[0007]

In order to solve the above-mentioned problems, the dispenser of the present invention is provided with a temperature controller for each of the nozzle and the syringe, or the nozzle and the syringe divided into a plurality of regions. ..

[0008]

With the above structure, the portion of the syringe that is not used for a long time is maintained at the optimum storage temperature of the material, so that it is possible to suppress changes in clay and composition and to ensure a stable usage period. Can be extended. In addition, by controlling the temperature of the nozzle portion and maintaining it at the optimum temperature for coating, the viscosity can be made constant, the occurrence of stringing due to the highly viscous substance can be suppressed, and stable dispensing can be performed.

Further, by controlling the temperature of the nozzle portion during the coating operation and during the stop, it is possible to prevent the material from dripping during the stop and to make the coating amount constant.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A dispenser according to an embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 showing Embodiment 1 of the present invention.
In the figure, 1 is a syringe, 2 is a nozzle, 3 is a temperature controller A, and 4 is a temperature controller B.

The operation of the dispenser configured as described above will be described below with reference to FIG.

A syringe 1 capable of pushing out a material by applying pressure and a nozzle 2 attached to the tip of the syringe are divided into two parts, and a temperature adjusting device A is provided near the nozzle 2.
By attaching 3 to control the application temperature and to attach a temperature controller B4 to the other syringe 1 portion to control the storage temperature, two regions can be independently controlled at different temperatures. Therefore, it is possible to apply while keeping the characteristics of the material constant.

Further, except during the coating operation, the temperature controller A3 is set to a temperature lower than that during the coating operation in which the viscosity of the material becomes large, and the coating temperature is set immediately before the coating operation, so that the nozzle 2 portion in the stopped state is It is possible to prevent the material from dripping.

(Embodiment 2) FIG. 2 showing Embodiment 2 of the present invention.
In the figure, 5 is a temperature controller C.

The operation of the dispenser configured as described above will be described below with reference to FIG.

Nozzle 2 has a structure in which a syringe 1 which is capable of pushing out a material by applying pressure and a nozzle 2 which is attached to the tip of the syringe are divided into three parts.
A temperature control device A3 is attached in the vicinity to control the application temperature, and a temperature control device B4 is attached to a portion of the syringe 1 away from the nozzle 2 to control the storage temperature, and the temperature control device A3 and the temperature control device B are controlled.
By attaching a temperature controller C5 between the four and controlling the temperature between the application temperature and the storage temperature, the three regions can be independently controlled at different temperatures. Therefore, it is possible to apply while keeping the characteristics of the material constant. Further, since the temperature adjusting device C5 for adjusting the temperature between the application temperature and the storage temperature is provided, even if the difference between the application temperature and the storage temperature of the material is large, the temperature can be gently changed. Can be prevented.

Further, even if the difference between the coating temperature of the material and the storage temperature becomes larger, it can be solved by dividing the area of the temperature controller C5 into a plurality of areas and attaching the temperature controller to each area.

[0019]

As is apparent from the above description of the embodiments, the dispenser of the present invention is provided with a nozzle and a syringe, or a nozzle and a syringe divided into a plurality of areas, and is provided with a temperature management function for each area. As a result, the portion of the syringe that is not used for a long time is maintained at the optimum storage temperature of the material, so it is possible to suppress the occurrence of clay changes and composition changes, and to extend the period of stable use of the material. You can In addition, by controlling the temperature of the nozzle portion and maintaining it at the optimum temperature for coating, the viscosity can be made constant, the occurrence of stringing due to the highly viscous substance can be suppressed, and stable dispensing can be performed.

Further, by controlling the temperature of the nozzle portion during the coating operation and during the stop, it is possible to prevent the material from dripping during the stop and to make the coating amount constant.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a dispenser according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a dispenser according to the second embodiment.

FIG. 3A is a schematic view of a conventional dispenser, and FIG. 3B is a schematic view of another conventional example.

[Explanation of symbols]

 1 Syringe 2 Nozzle 3 Temperature Controller A 4 Temperature Controller B 5 Temperature Controller C

Claims (6)

[Claims] 1. A dispenser comprising a syringe capable of extruding a material by applying pressure and a nozzle attached to the tip of the syringe, the dispenser being divided into the nozzle and the syringe, or the nozzle and a plurality of regions. A dispenser equipped with a temperature controller for each region of the syringe. 2. A temperature control device for dividing a syringe into two regions, the temperature of the region on the nozzle side being high and the temperature of the region on the opposite side of the nozzle being low in the divided region.
The dispenser described. 3. A temperature controller for dividing a syringe into two regions, the temperature of the region on the nozzle side being low and the temperature of the region on the opposite side of the nozzle being high being controlled in the divided regions.
The dispenser described. 4. A syringe is divided into a plurality of regions, the temperature of a nozzle side region is high in both end regions of the divided region, the temperature of a region opposite to the nozzle side is low, and the intermediate region is the nozzle side and the nozzle side. 2. A temperature control device is set so that the temperature between the regions on the opposite side of each of the regions decreases from the region on the nozzle side toward the region on the opposite side of the nozzle side.
The dispenser described. 5. A syringe is divided into a plurality of regions, the temperature of a nozzle side region is low in both end regions of the divided region, the temperature of a region opposite to the nozzle side is high, and the middle region is a temperature between both end regions. The dispenser according to claim 1, further comprising a temperature adjusting device that sets each region so as to be higher from the nozzle side region toward a region opposite to the nozzle side. 6. The dispenser according to claim 1, further comprising a temperature control device which divides the syringe into a plurality of regions and controls different temperatures during the coating operation and during the stop in the region including the nozzle.