JP2009291791A - Discharge device for liquid material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharge device for a liquid material which is capable of corresponding to syringes of various kinds of size. <P>SOLUTION: The discharge device for the liquid material stored in the syringe is provided. The device comprises a frame (1) in which an upper bracket part (2) and a lower bracket part (3) are formed and which is designed to be adapted to the largest syringe size matched with intended use, a screw part detachably attached to the upper bracket part (2) of the frame and mounting an actuator (6) at the upper end, a body (5) provided with an insert part inserted into the syringe (14) and a mounting part of an attachment (24) at a lower end, the actuator (6) provided at the upper end of the body (5) and fitted to the screw part, a valve stem (12) operated by the actuator and a valve sheet part member (15) fitted to the tip of the syringe (14) and formed detachably to the lower bracket part (3). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an apparatus for discharging a liquid material for precisely discharging and applying a liquid material such as an adhesive or a silicone resin liquid onto a circuit board when, for example, an electronic component is mounted on the circuit board. is there.

  As a technique for precisely discharging and applying a liquid material filled in a small container called a syringe onto a substrate, the present inventors have invented the utility model registration, which has been registered as a utility model 5-9099. No. 2 is known. In this technique, an adapter having a valve stem and an actuator that moves the valve stem up and down as components is held by a container filled with a liquid material, that is, a syringe, and is configured by the valve stem and a tip nozzle portion of the syringe. The present invention relates to a technique for opening and closing a valve mechanism to precisely discharge and apply a liquid material in a syringe.

No. 5-9099

  There are several types of containers or syringes that are filled with a liquid material distributed in the market, and among them, there are four types, 50cc, 30cc, 10cc, 5cc, which have the highest distribution. In order to apply the liquid material discharge device disclosed in the aforementioned Japanese Utility Model Publication No. 5-9099 to those having different sizes of syringes, the difference in the length of the clamp mechanism or valve stem that holds the syringe However, it is very troublesome to prepare a liquid discharge device suitable for each size, and preparing a liquid discharge device for each syringe size is expensive, so improvement is required. It was done.

  Further, in the conventional liquid material discharge device disclosed in the Japanese Utility Model Publication No. 5-9099, when the syringe is replaced, the gas pressure for discharging the liquid material remains in the syringe. The clamp mechanism must be opened after this is released by some means, but if the operator forgets to release the residual gas pressure in the syringe, the gas pressure remains in the syringe by mistake. When the syringe was removed in the state, the phenomenon that the syringe was blown violently by the gas pressure occurred at the moment when the clamp mechanism was released, which was very dangerous.

That is, the present invention has been made in view of the above-described problems. By preparing a small number of accessory parts for various syringe sizes, one type of liquid material discharge device can be used for various size syringes. It is an object of the present invention to provide a liquid material discharge device that can cope with this.
Another object of the present invention is to provide a liquid material discharge device that can safely operate by releasing the residual gas pressure in the syringe when the syringe is replaced.
A further object of the present invention is to provide a liquid material discharge device that is responsive to opening and closing operations of the discharge valve.

In order to solve the above problems, the present invention adopts the following method. Hereinafter, in order to help understanding, the symbols used in the examples described later are also described.
The present invention is a liquid material discharge device, at least,
a. A frame (1) designed to fit the largest syringe size that is formed with an upper bracket part (2) and a lower bracket part (3) and that fits the purpose of use;
b. The upper bracket portion (2) of the frame is detachable, and a screw portion for mounting the actuator (6) at the upper end, and an insertion portion for inserting into the syringe (14) and a mounting portion for the attachment (24) are provided at the lower end. Body (5),
c. An actuator (6) attached to a threaded portion provided at the upper end of the body (5);
d. A valve stem (12) actuated by the actuator;
e. A valve seat member (15) attached to the tip of a syringe (14) and detachably formed on the lower bracket part (3);
It was set as the discharge device of the liquid substance characterized by comprising.

Further, in the liquid material discharge device, the actuator (6) is constituted by an actuator by electromagnetic force, and the actuator is a liquid material discharge device attached to the body (5) by a screw also serving as a magnetic force adjusting means. .
Further, in the liquid material discharge device, a dispensation mechanism (30) comprising a body (5), an actuator (6), a valve stem (12), a syringe (14) and a valve seat member (15) is provided with a frame (1). A device for discharging the pressurized gas in the syringe automatically when removing from the liquid is provided.
Furthermore, in the liquid material discharge apparatus, a liquid material discharge apparatus in which an attachment (16) adapted to syringes of different sizes is detachably provided on the body (5) is provided.

  According to the liquid material discharge device of the present invention, by attaching the frame to the largest syringe for various syringe dimensions, an attachment suitable for the syringe is attached to the small syringe. By preparing, it is possible to provide a discharge device that can handle syringes of various sizes. Further, when the dispensing mechanism is removed from the frame, the pressurized gas in the syringe is automatically released by the action of rotating the body by 90 degrees, so that the syringe is safe without being blown off by the gas pressure. In addition, when the actuator is composed of an electromagnetic actuator, the gap between the armature to which the valve stem is attached and the electromagnetic coil can be arbitrarily adjusted by the screwing amount of the actuator mounting screw, so the strength of the magnetic force acting on the armature can be adjusted. The response speed of operation can be increased.

The figure which shows the whole structure of the discharge device of the liquid material by this invention. The partial expanded sectional view of FIG. AA sectional drawing of FIG. The figure which showed the other embodiment.

  Next, an embodiment of the present invention will be described. In the present invention, first, a syringe (14) filled with a liquid material is prepared. The syringe is pre-filled with a liquid material in the market. Then, the valve seat member (15) is screwed and attached to the tip of the syringe, and then the insertion portion at the lower end of the body (5) with the valve stem (12) and the actuator (6) incorporated in the body (5) is attached. Insert into the inner diameter of the upper end of the syringe. In this state, the dispensing mechanism (30) is configured. That is, the dispensing mechanism (30) includes an actuator (6), a body (5), a valve stem (12), a syringe (14), and a valve seat member (15).

  Next, the dispensing mechanism (30) is mounted on the frame (1). That is, the valve seat member (15) constituting the dispense mechanism (30) is attached to the lower bracket (3) of the frame (1), and the body (5) is attached to the upper bracket (2). Then, the liquid substance in the syringe (14) is always pressurized by a pressurized gas source (not shown), the actuator (6) is driven by a signal from a control device (not shown), and the valve stem (12) is opened. For example, the valve mechanism is opened and the liquid in the syringe (14) is discharged from the nozzle.

  Further, the actuator (6) is composed of an electromagnetic actuator, and the electromagnetic actuator is screwed onto the actuator mounting screw portion at the upper end of the body (5), and the magnetic force is adjusted by adjusting the screwing amount of the mounting screw. It is possible to improve the high-speed response by adjusting the magnetic force.

  In the liquid material discharge device, a dispensing mechanism (30) comprising a body (5), an actuator (6), a valve stem (12), a syringe (14) and a valve seat member (15) is provided from the frame (1). By incorporating means for automatically releasing the pressurized gas in the syringe at the time of removal, the pressurized gas in the syringe is automatically released when the dispensing mechanism (30) is removed from the frame (1). Unexpected accidents caused by gas pressure are prevented.

  Moreover, when the case where a syringe with a different size is used is described, the syringe (24) having a smaller shape is selectively used as the syringe, compared to the above-described syringe (14). Except for preparing an attachment (16) adapted to each of the syringes (24) of different sizes, all the above-mentioned liquid material discharge devices are shared. The mounting screws of the valve seat member (15) provided at the lower end of the syringe (24) are standardized and manufactured with the same dimensions even if the size of the syringe is different. An adapter (16) suitable for a small syringe (24) is attached to an attachment mounting portion provided at the lower end of the body (5), and the lower end of the attachment (16) is inserted into the upper portion of the syringe (24).

  By using the attachment (16), the size between the body (5) and the valve seat member (15) is restricted by the frame (1) even if the syringes have different sizes, so that the valve stem (12 ) Does not change. Therefore, the same valve stem (12) can be used.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a liquid material discharge apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. That is, FIG. 1 is a plan view showing the overall configuration of the liquid material ejection device according to the present invention, FIG. 2 is a partially enlarged sectional view of FIG. 1, and FIG. 3 is a sectional view taken along line AA of FIG. FIG. 4 is a cross-sectional view showing a part when different size syringes are used.

  In the figure, reference numeral 2 denotes an upper bracket, 3 denotes a lower bracket, and the upper bracket 2 and the lower bracket 3 are firmly fastened and integrated by a plurality of tie lots 4 to constitute a frame 1. In this embodiment, the frame 1 is constituted by the upper bracket 2, the lower bracket 3, and the tie lot 4. However, this is due to work convenience, and is not limited to such a configuration. You may comprise by integral structure with a welded structure etc.

  Also, the frame 1 must be designed to fit the largest syringe when using multiple syringes of different sizes. The syringe 14 is filled with a liquid material 23 in advance, and a plurality of types having different capacities and sizes are distributed, and are selectively used according to the purpose of use.

  As understood from FIG. 3, the upper bracket 2 is formed with bifurcated portions 2 a and 2 b in which the front end portion to which the body 5 is attached is bifurcated into a U shape. As will be described in detail later, a screw hole 2c and a through hole 2d for supplying the pressurized gas 18 into the syringe 14 via the body 5 are provided, and an attachment hole 2e for the tie rod 4 is provided. The screw hole 2c is connected to a pressurized gas supply source (not shown) via a pipe joint 19 and a hose 20.

  Next, reference numeral 5 denotes a body. A central portion of the body 5 is provided with a through hole 5c through which the valve stem 12 passes, and a neck portion 5a is detachably formed between the bifurcated portions 2a and 2b of the upper bracket 2. When mounted, the upper bracket 2 is positioned in the vertical direction. Further, a gas hole 5d communicating with the through hole 2d of the upper bracket 2 when provided is provided, and a seal member (O-ring) 17 is attached to a portion facing the through hole 2d.

  A male screw portion 5b for mounting the actuator 6 is provided on the upper portion of the body 5. Further, the outer diameter of the lower end portion of the body 5 is formed with an insertion portion 5e so that it can be inserted into and removed from the inner diameter portion of the syringe 14, and a sealing member (O Ring 13 is attached. Further, the inner diameter of the lower end portion of the body 5 is provided with a female screw 5f for mounting an attachment 16 used when using syringes of different sizes to be described later. Note that the mounting means for mounting the attachment 16 is not limited to screw mounting, but may be other mounting means.

  The actuator 6 is mounted on the upper portion of the body 5 as described above. In this embodiment, an electromagnetic actuator is employed as the actuator 6, but the present invention is not limited to this. For example, a fluid pressure piston using pressure air, pressure liquid, or the like may be employed. The electromagnetic actuator has an advantage that high-speed response is better than the fluid pressure piston type actuator. The actuator 6 includes an iron core 7, an electromagnetic coil 8, a cap 9, an armature 11, and the like. The iron core 7, the electromagnetic coil 8, and the cap 9 are integrally formed. A spring 10 is mounted between the iron core 7 and the armature 11. A female screw 9a formed on the cap 9 is screwed into the male screw 5b of the body 5 and attached. Reference numeral 21 denotes a seal member (O-ring). The seal member 21 prevents the pressurized gas 18 in the syringe 14 from leaking from the actuator 6 through the through hole 5c of the body 5 when the discharge device is used. belongs to.

  A valve stem 12 is connected to the armature 11. The armature 11 is always urged downward by the spring force of the spring 10 together with the valve stem 12 and is pulled upward by the electromagnetic force when the electromagnetic coil 8 of the actuator 6 is excited. The distance H between the actuator 6 and the armature 11 can be adjusted by adjusting the screwing amount of the female screw 9a formed in the cap 9 part of the actuator 6 and the male screw part 5b of the body 5, and thereby the actuator 6 magnetic force adjustment is possible. That is, if the numerical value of the distance H is reduced, the attractive force of the armature 11 by the magnetic force can be increased to increase the high speed response, and if the numerical value of the distance H is increased, the attractive force can be weakened.

  Reference numeral 15 denotes a valve seat member that is screwed onto the tip of the syringe 14, and the valve seat member 15 forms a valve mechanism V in cooperation with the tip of the valve stem 12 described above. Further, a flange portion 15 a having an increased outer diameter is formed in the middle portion of the valve seat member 15, and the flange portion 15 a is detachable from the stepped holding seat 3 a of the lower bracket 3. When the valve seat member 15 is mounted on the stepped holding seat 3a of the lower bracket 3, the vertical relationship position between the body 5 and the valve seat member 15 is fixed. The stepped holding seat 3a is also formed in a U-shaped open end as with the upper bracket 2 so that the valve seat member 15 can be easily attached and detached.

  Reference numeral 22 denotes a nozzle attached to the valve seat member 15, and nozzles having different sizes such as nozzle hole diameters and lengths are prepared, and those suitable for the purpose of use are selected and used.

  Next, the operation of this embodiment configured as described above will be described. First, the valve seat member 15 to which the nozzle 22 is attached is screwed into the tip of the syringe 14 filled with the liquid material 23, and then the valve stem 12 is attached. Then, the insertion portion 5e of the body 5 in which the actuator 6 has been incorporated in advance is inserted into the upper end inner diameter portion of the syringe 14. In this state, the dispensing mechanism 30 is configured. That is, the dispensing mechanism 30 includes the actuator 6, the body 5, the valve stem 12, the syringe 14, and the valve seat member 15. The tip of the valve stem 12 is pressed against the valve seat member by the spring force of the spring 10, and the valve mechanism V is closed.

  Next, the dispensing mechanism 30 in which the actuator 6, the body 5, the valve stem 12, the syringe 14, and the valve seat member 15 are incorporated is attached to the frame 1. That is, the valve seat member 15 is mounted on the stepped holding seat 3 a of the lower bracket 3, and the neck portion 5 a of the body 5 is mounted between the forked portions 2 a and 2 b of the upper bracket 2.

  Although not shown in detail in the figure, the relationship between the upper bracket 2 and the body 5 is such that the two-side cut portion 5g formed on the body portion of the body 5 is inserted between the forked portions 2a and 2b of the upper bracket 2, It is structured to be positioned and fixed at a predetermined position by a spring lock pin when rotated 90 degrees. Further, when removing, the structure is such that the body 5 can be removed only after rotating the body 5 by 90 degrees. Accordingly, when the body 5 is inserted between the forked portions 2a and 2b of the upper bracket 2 and rotated 90 degrees, the through hole 2d of the upper bracket 2 and the gas hole 2d of the body 5 are automatically aligned and communicated.

  Next, after the dispensing mechanism 30 is mounted on the frame 1, the pressurized gas 18 is supplied from a pressurized gas source (not shown) via the hose 20 joint 19. The pressurized gas 18 is supplied into the syringe 14 through the through hole 2d of the upper bracket 2, the gas hole 5d of the body 2, and the through hole 5c, and constantly pressurizes the liquid material 23 in the syringe 14. When the electromagnetic coil 8 of the actuator 6 is excited by a signal from a control device (not shown), the armature 11 and the valve stem 12 are lifted upward, the valve mechanism V is opened, and the liquid material 23 in the syringe 14 is nozzleed. 22 is discharged.

  Next, a procedure for exchanging with a new syringe when the liquid in the syringe becomes empty will be described. First, the body 5 mounted between the bifurcated portions 2a and 2b of the upper bracket 2 is rotated 90 degrees, and the two-surface cut portion 5g formed on the body portion of the body 5 is made to coincide between the bifurcated portions 2a and 2b. The dispensing mechanism 30 is removed from the frame 1. At this time, when the positions of the through hole 2d of the upper bracket 2 and the gas hole 5d of the body 5 are shifted due to the 90 ° rotation operation, the pressurized gas 18 in the syringe 14 is released into the atmosphere from the gas hole 5d. Thus, the internal pressure of the syringe 14 becomes zero. Therefore, the syringe is not blown off violently by the gas pressure taken up as a problem in the prior art. If the dispensation mechanism 30 that has been removed is further disassembled into the valve seat member 15, the syringe 14, the body 5, the actuator 6, and the like, it can be replaced with a new syringe.

  Next, the case where syringes of different sizes are used will be described with reference to FIG. That is, FIG. 4 is a cross-sectional view showing a part when a syringe of a different size is used. In the figure, reference numeral 16 is an attachment, 24 is a syringe of a different size, and the syringe 24 is It has a smaller shape than the syringe 14 described above. Reference numeral 25 denotes a seal member (O-ring). The components other than the attachment 16, the syringe 24, and the seal member 25 are the same as those shown in FIG. The mounting screws of the valve seat member 15 provided at the lower end of the syringe 24 are standardized and manufactured with the same dimensions even if the size of the syringe is different.

  A male screw portion 16 a is provided at the upper end of the attachment 16, and is screwed into a female screw portion 5 f provided at the lower end portion of the body 5. The means for attaching the attachment 16 to the body 5 may be a method other than the screwing means. An insertion portion 16 e is provided at the lower end of the attachment 16 and is inserted into the upper portion of the syringe 24. By using the attachment 16, the length of the valve stem 12 does not change because the size between the body 5 and the valve seat member 15 regulated by the frame 1 does not change even if the syringes have different sizes. Therefore, the same valve stem 12 can be used.

  About an effect | action, since it does not change with the thing without the attachment mentioned above except providing the attachment 16, description is abbreviate | omitted. In addition, no matter how the size of the syringe changes, the liquid material discharge device can be configured only by preparing an attachment suitable for the size of the syringe.

DESCRIPTION OF SYMBOLS 1 ... Frame 2 ... Upper bracket 3 ... Lower bracket 5 ... Body 6 ... Actuator 11 ... Armature 12 ... Valve stem 14 ... Syringe 15 ... Valve seat member 16 ... Attachment 30 ... Dispensing mechanism V ... Valve component

Claims (1)

A discharge device for a liquid substance stored in a syringe,
a. An upper bracket part (2) and a lower bracket part (3) are formed and a frame (1) designed to fit the largest syringe size that fits the purpose of use;
b. The upper bracket portion (2) of the frame is detachable, and a screw portion for mounting the actuator (6) at the upper end, and an insertion portion for inserting into the syringe (14) and a mounting portion for the attachment (24) are provided at the lower end. Body (5),
c. An actuator (6) attached to a threaded portion provided at the upper end of the body (5);
d. A valve stem (12) actuated by the actuator;
e. A valve seat member (15) attached to the tip of a syringe (14) and detachably formed on the lower bracket part (3);
An apparatus for discharging a liquid material, comprising:

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