JP2004256130A - Automatic paste injector and automatic paste injection method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic paste injector capable of injecting paste in a short time without mixing foreign matter, bubbles or the like in an injection container, and without soiling the hands of a worker, and an automatic paste injection method using the injector. <P>SOLUTION: In the automatic paste injector 10, a paste container 25 is stored in a case 15 in an airtight condition, and paste 40 is injected into an injection container 60 from the paste container 25. A piston plate 28 to press the paste 40 by the pressure of compressed air is slidably provided on the paste container 25, and a hole part 30a to slidably pass a paste transfer pipe 35 is formed in a piston plate 28. The paste container 25 is connected to the injection container 60 via the paste transfer pipe 35, and the paste 40 pressed by the piston plate 28 is moved in the paste transfer pipe 35 and automatically injected in the injection container 60. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a paste automatic injection device capable of automatically injecting a paste into an injection container and a paste automatic injection method using the same.
[0002]
[Prior art]
There are two methods for injecting a liquid agent as a paste into the injection container: (1) a method of manually injecting the liquid agent, and (2) a method of injecting the liquid agent using a liquid agent injection device. In the manual method (1), as shown in FIG. 6 (a), a small amount of liquid 70 is scooped from a liquid container with a spatula 71 or the like so as to prevent the liquid 70 from being spilled into the barrel 72 or the like. When the liquid material 70 has a low viscosity and fluidity, as shown in FIG. 6B, a conical funnel 73 is attached to the barrel 72 or the like, and the liquid material 70 is poured by being poured little by little. .
[0003]
In the method (2) using a liquid injection device (for example, Patent Document 1), the liquid is injected using a liquid injection device 75 shown in FIG. The liquid injector 75 is capable of stably and uniformly injecting the liquid into the barrel 76 without affecting the viscosity and fluidity of the liquid and without introducing bubbles, and a liquid tank (not shown). , A cylinder 77, a barrel 76, an air compressor (not shown), a control device (not shown), and various sensors 86a, 86b, 88a, 88b.
[0004]
The cylinder 77 as a sub-tank into which the liquid material is transferred from the liquid material tank is partitioned into upper and lower compartments 77a and 77b by a piston 78. The upper compartment 77a is connected to the liquid material tank by a pipe 79a, and the lower compartment 77b is a pipe. It is connected to the air compressor by 79b. The liquid is transferred to the upper compartment 77a via a pipe 79a, and the compressed air is transferred to the lower compartment 77b via a pipe 79b, and the piston 78 is pushed up by the compressed air to inject the liquid into the barrel 76. It is supposed to be. A valve (not shown) is provided between the upper compartment 77a and the solution tank to prevent the solution filled in the upper compartment 77a from flowing back into the solution tank.
[0005]
A plunger 80 with a rod 80a is inserted in the barrel 76 in advance. A measuring rod 81 is connected to the rod 80a, and a weight 83 having a measuring dog 82 is attached to the measuring rod 81. A driving device 85 for lowering the measuring rod 81 is attached above the weight 83. The barrel 76 is vertically held by a holder 88 so as not to fall down.
[0006]
The weighing dog 82 is located between the pair of sensors 88a and 88b provided at the upper part of the holder 88, and the presence or absence of the barrel 76 is detected by contacting the lower sensor 88b, and by contacting the upper sensor 88a. It is detected that the barrel 76 is filled with the liquid agent. The drive device 85 has an upper limit sensor 86a and a lower limit sensor 86b composed of magnetic sensors. Signals are transmitted and received between these sensors 86a and 86b and the sequencer so that sequential control is performed. Has become.
[0007]
The controller receives a detection signal from the lower limit sensor 86b, transmits a signal to an electromagnetic valve (not shown), and supplies a compressed air from the air compressor to the lower compartment 77b of the cylinder 77 with a sequencer. With this, the liquid agent is automatically injected into the barrel 76.
[0008]
[Patent Document 1]
JP-A-4-31294 (pages 2-4, FIG. 1)
[0009]
[Problems to be solved by the invention]
However, the above-mentioned conventional solution injection method has the following problems to be solved.
[0010]
In the manual injection method (1), there is a problem that it takes time to inject the liquid material 70. When the injection container is the barrel 72 of a small container, the liquid agent 70 cannot be easily injected, and the liquid agent 70 may spill and the barrel 72 may become dirty or adhere to the hands of the operator.
[0011]
There is also a problem that foreign matter such as dust and air bubbles are mixed during the injection. The foreign matter and bubbles are mixed in because the liquid agent 70 is injected in a state where the injection port of the barrel 72 is open. Bubbles are more likely to be mixed in as the viscosity of the liquid agent 70 increases, but even when the liquid agent 70 has a low viscosity, the mixing cannot be completely prevented. If foreign matter or air bubbles are mixed in the barrel 72, the applied amount of the liquid agent 70 discharged from the nozzle is varied, and the applied amount is increased or decreased, so that there is a problem that highly accurate application cannot be performed. .
[0012]
The method (2) of injecting using the liquid injector 75 transfers the liquid from the liquid tank to the cylinder 77 via the pipe 79a, pushes the liquid with the piston 78, and injects the liquid from the tip of the barrel 76. In addition, a liquid agent can be injected without mixing foreign matter or air bubbles. However, a cylinder 77 as a sub-tank is required between the liquid material tank and the barrel 76, and a check valve for preventing backflow is required, so that the structure of the liquid material injection device 75 becomes complicated and large. There is a problem.
[0013]
In addition, the liquid material is not directly injected into the barrel 76 from the disposable liquid material container, but the liquid material has to be once refilled from the liquid material container to the liquid material tank. Further, when the liquid agent is refilled, the liquid agent may remain in the liquid agent container, and an expensive liquid agent may be wasted.
[0014]
In view of the above, the present invention can inject a liquid agent (paste agent) in a short time without mixing foreign matter, bubbles, and the like into an injection container and without soiling the hands of an operator. It is an object of the present invention to provide a paste automatic injection device and a paste automatic injection method using the same, which can improve the liquid material injection workability without increasing the complexity and size of the paste.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is an automatic paste dispensing apparatus for accommodating a paste dispenser in an airtight case and pouring the paste dispenser from the paste dispenser into a dispenser. A piston plate for slidably pushing out the paste by the pressure of the compressed gas, and a hole for slidably inserting a paste transfer pipe through the piston plate; An agent container and the injection container are connected by the paste agent transfer pipe, and the paste extruded by the piston plate moves in the paste agent transfer pipe and is injected into the injection container. I do.
[0016]
According to the above configuration, the paste plate is slidably pushed down by the pressure of the compressed gas, the paste is pushed out by the piston plate, and the paste transfer pipe is slidably inserted through the hole of the piston plate. The inside of the paste rises and is poured into the filling container. Since the paste agent container is provided with the piston plate, the paste agent container functions as a cylinder, and it is not necessary to provide both the liquid agent tank and the cylinder as in the conventional example. Also, there is no need to provide a check valve for preventing backflow.
[0017]
According to a second aspect of the present invention, in the liquid automatic injection device according to the first aspect, the paste agent container is a replaceable disposable container.
According to the above configuration, since the paste container is a replaceable disposable container, when the paste container is emptied, the paste is replaced by a new paste container, and the paste is injected into the injection container. That is, there is no need to refill the paste into another container, and the paste can be easily injected into the injection container.
[0018]
According to a third aspect of the present invention, in the automatic liquid medicine injection device according to the first or second aspect, a lid that covers an opening of the paste agent container is provided with a gas supply hole and a pipe insertion hole. Features.
According to the above configuration, since the gas supply hole is provided in the lid, the piston plate is uniformly pressed by the pressure of the compressed gas without bias. In addition, since the lid is provided with a pipe insertion hole, the paste transfer pipe can be pulled out from the upper end opening of the paste container, and the disposable paste container can be used as it is without opening a hole in the paste container. Can be used.
[0019]
According to a fourth aspect of the present invention, in the liquid medicine automatic injecting apparatus according to any one of the first to third aspects, the injection container has a narrow end at a front end and a wide end at a rear end. And a plunger for moving the inside of the barrel to discharge the paste from the narrow opening.
[0020]
According to the above configuration, even if the injection container is a syringe as a small container, the paste is injected without polluting the hands or the syringe by connecting the paste agent container and the syringe with the paste agent transfer pipe. can do.
[0021]
According to a fifth aspect of the present invention, in the liquid automatic injection device according to any one of the first to fourth aspects, a recess for concentrating the compressed gas on a central portion of the piston plate is provided in the piston plate. Is formed.
[0022]
According to the above configuration, since the compressed gas concentrates on the depression of the piston plate, the compressed gas is prevented from directly hitting the inner wall of the paste agent container, and the paste agent container is prevented from expanding.
[0023]
According to a sixth aspect of the present invention, in the paste automatic injection device according to any one of the first to fifth aspects, the paste transfer pipe and the injection container are connected via an injection nozzle. It is characterized by the following.
According to the above configuration, attachment / detachment of the paste agent transfer pipe and the injection container is facilitated.
[0024]
The invention according to claim 7 is the paste automatic injection device according to any one of claims 1 to 5, further comprising an attachment nozzle connected to the paste agent transfer pipe, and a tip of the attachment nozzle being It is characterized by being inserted from the wide mouth side of the injection container.
According to the above configuration, the wide mouth side of the injection container is connected to the paste transfer pipe via the attachment nozzle, so that the paste can be easily injected into the injection container.
[0025]
The invention according to claim 8 is an automatic paste injection method using the paste automatic injection device according to any one of claims 1 to 7, wherein the injection port at the tip of the injection container includes: Connect the injection nozzle, or insert the tip of the attachment nozzle into the injection port at the rear end of the injection container, supply the compressed gas to the paste agent container in the case, and push down the piston plate Transferring the paste extruded by the piston plate through the paste transfer pipe and automatically injecting the paste into the injection container while pushing up the plunger or the barrel inserted into the injection container. It is characterized.
[0026]
According to the above configuration, the injection port at the front end of the injection container is closed by the paste transfer pipe, or the injection port at the rear end of the injection container is closed by the attachment nozzle. From being mixed into the injection container. For this reason, variation in the application amount of the paste discharged from the injection container and clogging of the nozzle discharge port are prevented, and highly accurate coating can be performed.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, specific examples of the embodiments of the present invention will be described in detail with reference to the drawings.
FIGS. 1 and 2 show a first embodiment of a dispenser (paste agent automatic injection device) 10 according to the present invention.
[0028]
The dispenser 10 is a device for injecting the paste 40 into a syringe (injection container) 60. As the liquid to be injected, a non-fluid, high-viscosity liquid like the paste 40 or grease is preferable, but a liquid, low-viscosity liquid such as alcohol, an electrolytic solution, ink or oil may be injected. It is possible. Since the paste 40 is automatically injected, a clean injection operation can be performed without the syringe 60 becoming dirty, the hands being dirty, and the hands not being touched.
[0029]
The dispenser 10 according to the present invention is an injection device in which a paste agent container 25 is housed in a case 15 which is in an airtight state, and the paste agent 40 is poured into the syringe 60 from the paste agent container 25. A thin piston plate 28 for extruding the paste 40 is slidably and closely attached to the inner surface of the paste container 25, and a hole 30a is provided in the piston plate 28 for slidably inserting the paste transfer pipe 35. The syringe 60 and the paste agent container 25 are connected by the paste agent transfer pipe 35, and the paste 40 extruded by the piston plate 28 moves in the paste agent transfer pipe 35 and is injected into the injection container 60. It is assumed that.
[0030]
According to the dispenser 10, the compressed gas sent from the compressor 51 or the cylinder is supplied to the paste agent container 25, so that the internal pressure of the paste agent container 25 is increased, and the paste 40 is compressed by the pressure of the piston plate 28. The paste 40 is extruded toward the agent transfer pipe 35, and the paste 40 is automatically injected into the syringe 60. As the compressed gas, compressed air is preferably used, but compressed nitrogen or the like can also be used.
[0031]
For this reason, the paste 40 can be automatically injected in a short period of time without contaminating or touching the hands of the operator without mixing foreign matter such as dust or air bubbles into the syringe 60. . Further, the paste 40 can be directly injected from the paste container 25 having the thin piston plate 28 into the syringe 60, so that the paste 40 can be easily injected without increasing the complexity and size of the device. be able to.
[0032]
Hereinafter, each component of the dispenser 10 will be described in detail.
As shown in FIG. 1, the dispenser 10 includes a dispenser main body 13 and gas supply means 50. The dispenser main body 13 covers the case 15, a cover 20 for sealing the upper end opening 16 of the case 15 in an airtight state, a paste container 25 accommodated in the case 15, and an upper end opening (opening) 32 of the paste container 25. A closed lid (lid) 45 provided, a thin piston plate 28 that is slidably and closely attached to the inner surface of the container 25 and pushes out the paste 40, and the paste 40 is transferred from the paste container 25 to the syringe 60. And a paste agent transfer pipe 35 for transferring.
[0033]
The case 15 is made of a vinyl chloride resin material having good moldability and has a cylindrical shape. Upper and lower ends of the case 15 are formed with openings, and the upper end opening 16 is covered with a cover 20. The space inside the case 15 is a space for accommodating the paste agent container 25. The outer diameter of the case 15 is 130 mm in diameter and 260 mm in height, and is formed in a size that can completely accommodate the paste agent container 25. The weight is about 1.5 kg. The size of the case 15 is formed to a size corresponding to the paste agent container 25, and the size can be changed.
[0034]
On the inner wall 17 on the upper end opening 16 side of the case 15, there is provided a stepped shelf 17 a which abuts on the flange 26 a of the paste agent container 25 and positions the paste agent container 25 in the vertical direction. An O-ring 18 for sealing is fitted into the shelf 17a so as to protrude inward in the radial direction. When the paste agent container 25 is mounted on the case 15, the outer wall 26 of the paste agent container 25 comes into close contact with the O-ring 18, so that the compressed air supplied from the compressor 51 to the case 15 does not leak out of the case 15, The airtight state in the case 15 is maintained, and the internal pressure of the paste agent container 25 is increased.
[0035]
The cover 20 is a lid that closes the upper end opening 16 of the case 15 in an airtight state, and has a disk shape. In the central portion 21 of the cover 20, an insertion hole 21a through which the paste agent transfer pipe 35 is inserted and an insertion hole 21b through which a pressure feeding pipe 54 for feeding compressed air is inserted are formed in parallel with each other. Annular grooves (not shown) are formed in the inner peripheral surfaces of both the insertion holes 21a and 21b, and O-rings for sealing are inserted into the grooves.
[0036]
On the back surface of the cover 20, a male threaded annular leg portion 22 projects downward. A female screw is cut on the inner wall 17 of the case 15 at a position corresponding to the male screw of the leg portion 22, and the male screw and the female screw are screwed together so that the cover 20 can be attached to the case 15 without a gap. I have.
[0037]
The paste container 25 is a tank-shaped disposable plastic container having an upper end opening 32 and is commercially available. The size of the container 25 is, for example, 1000 cm. ³ And a diameter of 105 mm and a height of 170 mm.
[0038]
The piston plate 28 is a disk-shaped plastic member. In the center of the piston plate 28, an insertion hole (hole) 30a through which the paste agent transfer pipe 35 is slidably inserted is formed. An annular groove is formed in the inner peripheral surface of the insertion hole 30a, and an O-ring 33 is inserted into the groove so that the piston plate 28 and the paste agent transfer pipe 35 are in close contact with each other without a gap.
[0039]
Further, a recess 34 is provided on the surface (upper surface) of the piston plate 28. That is, the piston plate 28 is formed stepwise in the radial direction, and has a thin portion 30 on the radial inside and a thick portion 31 on the radial outside with the step portion 29 as a boundary. By forming the surface of the piston plate 28 in a step shape in this manner, the compressed air supplied to the paste agent container 25 hits the vertical wall of the step portion 29 which is a boundary between the thin portion 30 and the thick portion 31, and is rebounded. The compressed air is prevented from directly hitting the inner wall of the paste agent container 25, and the compressed air is concentrated on the central portion of the piston plate 28. Thereby, the paste material container 25 made of plastic does not expand, no gap is formed between the paste material container 25 and the piston plate 28, and the paste material 40 is efficiently injected into the syringe 60 by the pressure of the compressed air. It has become.
[0040]
The lid 45 is a plastic lid that closes the upper end opening 32 of the paste agent container 25, and an annular edge 47 is vertically provided on the outer edge. An internal thread having a plurality of threads is cut on the inner peripheral surface of the edge portion 47. An external thread is cut on the outer peripheral surface on the upper end opening 32 side of the paste agent container 25, and the female screw of the lid 45 and the male screw of the paste agent container 25 are screwed together, so that the lid 45 is attached to the paste agent container 25. It can be attached.
[0041]
A gas supply hole 46a is formed in the flat portion 46 of the lid 45 so that compressed air is supplied to the paste agent container 25 from the gas supply hole 46a. A plurality of gas supply holes 46a may be formed in the lid 45 at equal intervals in the circumferential direction.
[0042]
By forming the gas supply hole 46a in the lid 45, compressed air is supplied from the gas supply hole 46a to the paste agent container 25, and the thin piston plate 28 is uniformly pressed without bias. For this reason, the hermeticity of the paste agent container 25 and the piston plate 28 is maintained, and the paste agent 40 is reliably pushed out by the piston plate 28.
[0043]
Further, the flat portion 46 is provided with an insertion hole (pipe insertion hole) 46b through which the paste agent transfer pipe 35 is inserted. By providing the insertion hole 46b, the paste agent transfer pipe 35 can be pulled out from the upper end opening 32 of the paste agent container 25, and the paste agent container 25 can be used as it is without making a hole or the like in the paste agent container 25. it can.
[0044]
As shown in FIG. 2, the paste transfer pipe 35 includes a pipe body 36 and a bush 37 pressed into one end (upper end) of the pipe body 36. The pipe body 36 is made of a metal material having excellent corrosion resistance, for example, an aluminum alloy material, and the bush 37 is made of an engineering plastic having excellent workability and chemical resistance, for example, polyacetal (POM).
[0045]
The reason why the bush 37 is press-fitted into the pipe main body 36 is that it is not easy to cut the female screw for screwing the male screw 42a formed in the injection nozzle 42 into the thin pipe main body 36. Therefore, the bush 37 is provided with a female screw 37a, which is screwed with the male screw 42a of the injection nozzle 42. An O-ring 38 is fitted in the tapered press-fitting portion 37b of the bush 37 so that the paste 40 does not ooze out. When the bush 37 is made of a synthetic resin material having excellent adhesiveness, the bush 37 may be attached by using an instant adhesive instead of press-fitting.
[0046]
The gas supply means 50 includes a compressor 51, a pressure gauge 52, a valve opening / closing section 53, and a pressure feed pipe 54. The compressor 51 is a machine that compresses compressed air more than twice as much as uncompressed air by a rotating motion of an impeller or a rotor or a reciprocating motion of a piston, such as a turbo compressor, a vane compressor, and a reciprocating compressor. Is applied. The compressed air passes through a pneumatic filter (not shown) to remove moisture, dust, and the like, and is supplied to the case 15. The compressor 51 can be combined with the valve opening / closing section 53. Note that a cylinder can be used instead of the compressor 51.
[0047]
As the pressure gauge 52, a Bourdon tube type pressure gauge that uses a displacement of an elastic body is applied. The pressure indicated by the pressure gauge 52 is adjusted to a gauge pressure of 0.1 to 0.5 MPa by a pressure adjusting valve or the like (not shown).
[0048]
The valve opening / closing section 53 includes an operation lever 53 a and a pressure control valve (not shown), and is provided in series at an end of the pressure feed pipe 54. By rotating the operation lever 53a, the pressure control valve is opened, and compressed air is sent to the case 15. As the pressure control valve, a pressure reducing valve having a diaphragm is used.
[0049]
Next, the syringe into which the paste is injected will be described.
As shown in FIG. 3, the syringe 60 includes a barrel 61, a plunger 62, and a discharge nozzle (not shown). The barrel 61 is an injection container using a high-molecular polymer resin material such as polypropylene as a molding material, and has a cylindrical shape. This is because polypropylene resin is a resin material suitable as a molding material for the barrel 61 because it has good moldability, high strength, and excellent chemical resistance. It is also effective to coat the inner surface of the barrel 61 with a fluororesin in order to increase the peel resistance to the paste 40.
[0050]
A constricted sleeve 61a for holding the discharge nozzle is integrally formed at the front end of the barrel 61, and a flange 61b for maintaining airtightness with an adapter (not shown) is integrally formed at the rear end of the barrel 61. I have. The body 61c of the barrel 61 is formed in a cylindrical surface so that the fluidity of the paste 40 is enhanced. The volume of the paste storage chamber inside the body 61c varies depending on the barrel size, but is mainly 3 to 55 cm. ³ It is formed in a volume of about. As an example, the outer diameter and length of the barrel 61 are 55 cm in volume. ³ Are 26 mm and 173 mm, respectively.
[0051]
Both ends of the barrel 61 are formed with openings. A narrow opening is formed in the sleeve 61a at the front end, and a wide opening is formed at the rear end. A discharge nozzle is attached to the narrow end of the tip, and the paste 40 is discharged. A plunger 62 as a piston is attached to the wide end at the rear end.
[0052]
The plunger 62 is in close contact with the inner surface of the body 61 c of the barrel 61, seals the paste 40 in the barrel 61, and functions as a piston for sliding downward to push out the paste 40. The plunger 62 is made of soft polyethylene to prevent the inner surface of the barrel 61 from being damaged when the plunger 62 slides. The plunger 62 has various shapes, and an arbitrary shape is selected according to the viscosity of the paste 40 or the like. The plungers 62 include those with a rod and those without a rod. The plunger with a rod is for manual discharge, and the plunger 62 without a rod is for automatic discharge.
[0053]
The discharge nozzle (not shown) is made of a resin material such as polyethylene or polypropylene or a metal material such as stainless steel having excellent corrosion resistance, and is detachably attached to the sleeve 61 a of the barrel 61. The discharge nozzle is mounted by screwing a male screw and a female screw or press fitting.
[0054]
There are various shapes of the discharge nozzle, which can be arbitrarily selected according to the application. For example, the taper nozzle is suitable for applying a liquid material having a medium viscosity to a high viscosity such as the paste 40, and the needle nozzle is suitable for applying a liquid material having a low viscosity such as ink or paint.
[0055]
Next, a method of assembling the dispenser 10 will be described.
The paste agent container 25 is placed in the case 15, the piston plate 28 is fitted in the paste agent container 25, the cover 45 is covered, and the upper end opening 16 of the case 15 is covered with the disk-shaped cover 20. Subsequently, the paste transfer pipe 35 is inserted through the insertion holes 21 a, 46 b, and 30 a of the cover 20, the lid 45, and the piston plate 28, and the lower end of the paste transfer pipe 35 is inserted into the paste 40. Then, the injection nozzle 42 is screwed into the bush 37 pressed into the upper end of the paste transfer pipe 35 to connect the paste transfer pipe 35 and the syringe 60. Finally, the pressure feed pipe 54 connected to the compressor 51 is inserted into the insertion hole 21b of the cover 20, and the tip of the pressure feed pipe 54 is positioned between the cover 20 and the cover 45, and the gas supply hole 46a of the cover 45 is closed. Compressed air is supplied to the paste agent container 25 uniformly.
[0056]
Next, the operation of the dispenser 10 will be described.
When the operation lever 53a of the valve opening / closing section 53 provided in series with the pressure feed pipe 54 is rotated in the opening direction, compressed air of a predetermined gauge pressure is supplied from the compressor 51 into the airtight case 15 and compressed air is supplied. Enters the paste container 25 through the gas supply hole 46a of the lid 45, the piston plate 28 is pushed down by the pressure of the compressed air, and the paste 40 pushed out by the piston plate 28 rises inside the paste transfer pipe 35. The paste 40 is automatically injected into the barrel 61 while pushing up the plunger 62 inserted into the barrel 61.
[0057]
Thus, the paste 40 can be injected in a short time without mixing foreign matter such as dust or air bubbles into the barrel 61 and without soiling the syringe 60 or the hand. The use of the syringe 60 into which the paste 40 has been injected in this manner prevents variations in the amount of paste 40 to be applied and clogging of the discharge port at the tip of the nozzle. It is possible to do.
[0058]
4 and 5 show a second embodiment of the dispenser 10 according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.
[0059]
The main differences between this embodiment and the first embodiment are that the paste 40 is injected into the syringe 60 from the paste transfer pipe 35 via the attachment nozzle 65 and that the paste 40 is injected from the rear side of the barrel 61. Is injected.
[0060]
The attachment nozzle 65 is a hollow pipe made of a transparent acrylic resin material and is bent. The reason why the bent portion is formed is that when formed straight, the attachment property of the syringe 60 to the attachment nozzle 65 is deteriorated. The bending angle is arbitrary, but is set to θ = 10 ° to 15 °. The outer dimensions of the attachment nozzle 65 are set to a diameter φ10 to 20 mm and a length L100 to 180 mm.
[0061]
At the rear end of the attachment nozzle 65, a male screw 65a is cut, and the male screw 65a is screwed with the female screw 37a of the paste transfer pipe 35 (the bush 37). At the tip of the attachment nozzle 65, a taper ring 66 made of a polyacetal resin material is externally fitted in close contact with the taper ring. The maximum outer diameter of the tapered ring 66 is smaller than the inner diameter of the barrel 61, so that the tapered ring 66 can be smoothly inserted into the barrel 61. Since the O-ring 67 is inserted into the body wall of the tapered ring 66, the barrel 61 and the tapered ring 66 are slidably in close contact with each other, and the airtight state in the barrel 61 is maintained.
[0062]
The tapered ring 66 is inserted deeply from the wide opening at the rear end of the barrel 61, and the paste 40 is pushed out from the hole 68 of the tapered ring 66 and injected into the barrel 61. At the same time as the paste 40 is injected, the barrel 61 moves obliquely upward, so that the paste 40 is automatically injected into the barrel 61. When the paste 40 is injected, the narrow opening at the tip of the barrel 61 is closed, so that the paste 40 does not leak from the narrow opening. After the paste 40 is injected, the barrel 61 is removed from the attachment nozzle 65, and the plunger 62 is inserted.
[0063]
According to this embodiment, since the paste 40 is injected from the wide opening at the rear end of the barrel 61, the non-fluid, high-viscosity paste 40 can be easily injected. Further, as compared with the case where the paste 40 is injected from the narrow opening at the tip of the barrel 61, the injection time of the paste 40 is further reduced, and the injection workability is improved.
[0064]
【The invention's effect】
As described above, according to the first aspect of the present invention, the pressure of the compressed gas supplied to the case pushes down the piston plate of the paste container, and the paste in the paste container is pushed out by the piston plate, and the paste is pressed. The agent rises up the paste agent transfer pipe and is injected into the injection container. Further, the paste agent container functions as a cylinder having a piston plate and feeds the paste agent into the injection container. Therefore, it is possible to automatically inject the paste in a short time without mixing foreign matter, air bubbles, or the like into the infusion container or soiling the hands of the operator. Further, it is possible to provide a small-sized automatic paste-injection device with a simple structure without causing the device to be complicated and large.
[0065]
According to the second aspect of the present invention, since the paste container is a replaceable disposable container, there is no need to refill the paste into another container. Therefore, the paste can be easily injected into the injection container, and the workability of the injection of the paste is improved.
[0066]
According to the third aspect of the present invention, the piston plate can be uniformly pressurized without bias, and the disposable type paste container can be used as it is without making a hole or the like in the paste container. it can.
[0067]
According to the fourth aspect of the present invention, since the paste agent container and the syringe are connected by the liquid agent transfer pipe, the paste agent container can be connected to a syringe having a narrow inlet without spilling over a short time. The paste can be reliably injected.
[0068]
According to the fifth aspect of the present invention, since the recess is formed in the piston plate, the compressed gas is concentrated on the recess, the pressure in the center of the piston plate is increased, and the compressed gas is formed on the inner wall of the paste container. Is prevented from hitting directly. Therefore, the expansion of the paste agent container is prevented, and no gap is formed between the paste agent container and the piston plate, so that the paste agent is efficiently injected into the injection container.
[0069]
According to the sixth aspect of the present invention, since the paste transfer pipe and the injection container are connected via the injection nozzle, attachment / detachment of the paste transfer pipe and the injection container is facilitated, so that the injection container can be easily removed. The assemblability is improved.
[0070]
According to the seventh aspect of the present invention, since the wide opening side of the injection container and the paste transfer pipe are connected to each other through the attachment nozzle, the paste can be easily injected into the injection container, and the paste injection operation can be performed. Performance can be improved.
[0071]
Further, according to the invention of claim 8, since the injection port of the injection container is closed by the injection nozzle or the attachment nozzle, foreign matter or air bubbles that cause variation in the amount of paste applied and clogging of the nozzle discharge port are reduced. , From being mixed into the injection container from the injection port. Therefore, it is possible to apply the paste with high accuracy.
[Brief description of the drawings]
FIG. 1 is an exploded view showing a first embodiment of an automatic paste dispenser according to the present invention.
FIG. 2 is a front view showing the paste transfer pipe shown in FIG. 1;
FIG. 3 is an assembly view of the automatic paste dispenser shown in FIG. 1;
FIG. 4 is an assembly view showing a second embodiment of the automatic paste dispenser according to the present invention.
FIG. 5 is a front view showing the paste transfer pipe shown in FIG. 4;
FIG. 6 is a diagram showing an example of a conventional liquid agent injection method.
FIG. 7 is a view showing a liquid material injection device used in a conventional liquid material automatic injection method.
[Explanation of symbols]
10. Dispenser (paste automatic injection device)
13 Dispenser body
15 cases
25 Paste container
28 piston plate
32 Top opening (opening)
34 dent
35 Paste transfer pipe
40 paste
45 Closed lid (lid)
46a Gas supply hole
51 Compressor
60 syringe (injection container)
61 barrels
62 plunger

Claims (8)

A paste agent automatic injecting device for accommodating a paste agent container in an airtight case and pouring a paste agent from the paste agent container into an injection container,
A piston plate for slidably extruding the paste by the pressure of the compressed gas in the paste container, and a hole for slidably inserting a paste transfer pipe through the piston plate; A container and the injection container are connected by the paste transfer pipe, and the paste extruded by the piston plate moves in the paste transfer pipe and is injected into the injection container. Automatic paste injection device. The paste agent automatic injection device according to claim 1, wherein the paste agent container is a replaceable disposable container. The paste agent automatic injection device according to claim 1 or 2, wherein a gas supply hole and a pipe insertion hole are provided in a lid covering an opening of the paste agent container. A syringe for applying a paste agent, comprising: a barrel having a narrow mouth at a front end and a wide mouth at a rear end; and a plunger which moves in the barrel and discharges the paste from the narrow mouth. The paste automatic injection device according to any one of claims 1 to 3, wherein: The paste agent automatic injection device according to any one of claims 1 to 4, wherein a recess is formed in the piston plate for concentrating the compressed gas at a central portion of the piston plate. The paste agent automatic injection device according to any one of claims 1 to 5, wherein the paste agent transfer pipe and the injection container are connected via an injection nozzle. The paste agent automatic injection according to any one of claims 1 to 5, further comprising an attachment nozzle connected to the paste agent transfer pipe, wherein a tip of the attachment nozzle is inserted from a wide-mouth side of the injection container. apparatus. It is a paste agent automatic injection method using the paste agent automatic injection device according to any one of claims 1 to 7,
The injection nozzle is connected to the injection port at the tip of the injection container, or the tip of the attachment nozzle is inserted into the injection port at the rear end of the injection container, and the compressed gas is supplied to the paste agent in the case. The paste is supplied to a container, the piston plate is pressed down, the paste extruded by the piston plate is transferred through the paste transfer pipe, and the injection is performed while pushing up the plunger or the barrel inserted into the injection container. A method for automatically injecting a paste, wherein the paste is automatically injected into a container.

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