JPS6226397Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a metered-dose dispensing device. Specifically, the present invention relates to a fixed-quantity dispensing device, and more specifically, it is capable of freely adjusting the stroke of a movable body such as a shaft or a piston equipped with a discharging valve. The present invention relates to a fixed-quantity dispensing device capable of discharging a fixed amount.

(Prior Art) As shown in FIG. 1, the basic configuration of a fixed-quantity dispensing device is that a shaft 2 equipped with a discharge valve 1 and a movable body A such as a piston 3 provided on the shaft are connected to a needle body 4, a piston 3, etc. It is generally housed in a support B such as the body 5 so as to be able to slide back and forth, and is further provided with a lid C that seals and covers the inside of the support B. In the case of the dispensing device shown in FIG. 1, the shaft 2 is formed into a hollow shape from which the discharged material such as adhesive is supplied under pressure, and on the other hand, the solenoid valve device (not shown) is used to switch and supply the discharged material. The pressurized fluid flows into the pressurizing chamber 7 from the inlets 6, 6 of the piston body 5 and presses the piston 3, thereby causing the discharge valve 1 to separate from the valve seat 8 for a predetermined time and a predetermined stroke. Therefore, a predetermined amount of the discharged material is discharged.

(Problem to be solved by the invention) The discharge amount in a fixed-rate dispensing device is determined by the supply pressure of the discharged material, the opening time of the discharge valve, and the opening stroke of the discharge valve, but in the past, only the former two, In other words, the quantity of discharged material has been regulated by operating a pressurizing device, a solenoid valve device, etc. on the supply side of the metered dispensing device. In this way, conventional fixed-quantity dispensing devices have a constant valve opening stroke, so there is no problem when using the dispensing device for a specific task, but there is a disadvantage that it cannot be used when the dispensing device is used for a task where the discharge amount varies greatly. was occurring.

Therefore, the present invention improves the above-mentioned conventional metered dispensing device and further configures it so that the starting stroke of the discharge valve can be adjusted, thereby providing versatility in the metering dispensing device. The object of the present invention is to obtain a metered-dose dispensing device that can be extremely easily manufactured using an extremely simple mechanism.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a system in which a hollow shaft equipped with a discharge valve and a movable body such as a piston provided therein support a needle body, a piston body, etc. The movable body is reciprocally slidably housed in the movable body, and further includes a lid that hermetically covers the inside of the support body, and the ejected material supplied under pressure via the hollow part of the shaft is moved back and forth by the movable body. In a fixed-quantity dispensing device in which the discharge valve is opened and discharged, the lid is concentrically divided into inner and outer parts, and an outer lid is screwed and fixed to a support body, and an outer lid is movable into and out of the outer lid. The movable body is provided with an inner cover that is screwed onto the movable body, and the inner cover is configured such that when the movable body slides, the inner cover is provided at a position where the front or rear portion of the inner cover comes into contact with the movable body.

(Function) When the inner cover of the cover body is rotated, the inner cover advances and retreats with respect to the fixed outer cover, and as a result, the stroke interval between the inner cover and the movable body becomes different.

(Example) The present invention will be described below according to an example shown in the drawings. Note that the same reference numerals are given to the same components as those of the metered dispensing device shown in FIG.

FIG. 2 is a vertical cross-sectional view showing a metered dispensing device according to the present invention. In the same figure, the present invention has a movable body A that can freely slide back and forth on a support B, similar to the conventional device shown in FIG. It is a device that is housed and equipped with a lid C, and the lid C is further divided concentrically into inner and outer parts to form an outer lid 9 and an inner lid 10.

In this lid C, as shown in FIGS. 3 and 4, an inner lid 10 is screwed onto an outer lid 9 so as to be freely advanced and retracted, and the outer lid 9 is connected to a support B, that is, as shown in FIG. In the embodiment, it is screwed and fixed to the piston body 5. In the discharge device of the present invention, in the case of the embodiment shown in FIG.
In order to adjust the stroke of the front part 1 of the inner lid 10,
0a is provided at a position where it comes into contact with the movable body A. That is, when the rear part 3' of the piston 3, which is the movable body A, comes into contact with the front part 10a of the inner lid 10, the amount of sliding movement of the shaft 2 is regulated, and accordingly, the opening stroke of the discharge valve 1 is also regulated. Therefore, the above-mentioned stroke may vary depending on the position of the front portion 10a of the inner lid 10. Therefore, by turning the inner cover 10, which is screwed onto the outer cover 9 so as to be able to move forward and backward, the piston 3 of the inner cover front part 10a can be rotated.
The relative position of the movable body A is changed, and the stroke of the movable body A is adjusted. In addition, since the inner cover 10 is configured to be able to move forward and backward relative to the outer cover 9, it is preferable to install an O-ring 11 between the inner and outer covers 9 and 10, and also to install a rotary tool in a suitable position at the rear of the inner cover 10. It is preferable to form a notch 12 for locking.

FIG. 5 is a longitudinal cross-sectional view showing an embodiment in which the present discharge device is applied to a so-called reverse valve type nozzle. The stroke of the movable body A can be adjusted by coming into contact with the movable body A. In the open state shown in FIG. 5, the inner lid rear part 10b
The distance t between the front surface of the nut 13 and the movable body A is the opening stroke of the discharge valve 1, and therefore, by turning the inner cover 10, the distance t can be varied and the valve opening stroke can be adjusted. It becomes possible.

In addition, in the above-mentioned embodiment, the front part 10a or the rear part 10b of the inner lid 10 has been described as being in contact with the piston 3 or the nut 13 to adjust the stroke, but the present invention is not limited to these embodiments. Of course, there is no such thing as the movable body A, including the shaft 2, the piston 3, and other attachments thereto. The front and rear portions 10a and 10b are not necessarily limited to the front and rear edges, but may be located at appropriate locations. Turning further,
Of course, the discharge device of the present invention is not limited to a fluid-operated piston as shown in the drawings.

(Effects of the invention) As explained above, in the quantitative dispensing device according to the invention, the lid body is divided into the inner and outer parts, and an outer lid and an inner lid are provided, and the inner lid is movable at an appropriate position at the front or rear part. It is installed in a position that makes contact with the body, and the inner cover is screwed to the outer cover so that it can move forward and backward.
By appropriately turning the inner cover, the relative distance between the inner lid and the movable body changes, thereby making it possible to easily adjust the stroke of the movable body. Therefore, according to the discharge device of the present invention, the supply pressure of the discharged material,
In addition to adjusting the opening time of the discharge valve, it is also possible to adjust the stroke, so it can be used for different tasks that require significantly different discharge volumes, thereby improving the versatility of the discharge device. . Furthermore, the dispensing device of the present invention has the advantage that it is possible to perform more accurate fixed-quantity dispensing, and the dispensing amount can be set and adjusted very easily.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing a conventional metered dispensing device;
Fig. 2 is a vertical cross-sectional view showing the metered dispensing device according to the present invention, Fig. 3 is a perspective view of the lid body used in the present invention, and Fig. 4
The figure is a sectional view taken along the line X--X in FIG. 3, and FIG. 5 is a longitudinal sectional view showing another embodiment of the discharge device of the present invention. A... Movable body, B... Support body, C... Lid body, 1... Discharge valve, 2... Shaft, 3... Piston, 4... Needle body, 5... Piston body, 9... Outer lid, 10...
Inner lid, 10a... Inner cover front, 10b... Inner cover rear, t
…interval.

Claims (1)

[Scope of utility model registration request] A hollow shaft 2 equipped with a discharge valve 1 and a movable body A such as a piston 3 provided therein are housed in a supporting body B such as a needle body 4 and a piston body 5 so as to be able to reciprocate and slide. It is equipped with a lid body C that hermetically covers the inside of the body, and the discharged material supplied under pressure via the hollow part of the shaft 2 is discharged when the discharge valve 1 is opened by the reciprocating sliding of the movable body A. In this fixed-quantity dispensing device, the lid C is concentrically divided into two parts, an inner and an outer part, and an outer lid 9 is screwed and fixed to the support B, and an inner lid is screwed to the outer lid 9 so that it can move forward and backward. 10, and the inner lid 10 includes:
A fixed-quantity dispensing device characterized in that the front portion 10a or the rear portion 10b of the movable body A is provided at an appropriate position to come into contact with the movable body A when the movable body A slides.