JP4284107B2 - Viscous material extrusion equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for extruding a viscous material, and in particular, is used by being connected to an apparatus for applying a viscous material, and allows the material contained in a container to be extruded to the limit and stops the apparatus. The present invention relates to an apparatus for extruding a viscous material that enables continuous extrusion of the material without causing any problems.
[0002]
[Prior art]
Conventionally, it has been known that a high-viscosity material such as silicone is used as a sealing material between mechanical parts and between electrical parts. This sealing material is applied using a coating device provided with a nozzle, and the coating device is connected to an extrusion device that contains a material in a container. As an extrusion apparatus, for example, as shown in FIGS. 3 and 4, a container 50 made of a pail pipe or the like having an open upper end for accommodating the material M, and an extrusion member 51 positioned on the upper surface side of the material in the container 50. And is configured. The extruding member 51 includes a main body 52 having an inverted T shape and a wiper 53 attached to the lower end of the main body 52. A passage 55 penetrating in the vertical direction is formed in the central portion of the main body 52, while a hole 56 communicating with the passage 55 is formed in the central portion of the wiper 53. The pushing member 51 keeps pressing the material M by its own weight, and can feed the material M to the pump side by the operation of a pump (not shown) connected to the passage 55. At this time, the wiper 53 descends while its outer peripheral surface is in close contact with the inner peripheral surface of the container 50 and scrapes the material adhering to the inner peripheral surface downward, thereby suppressing the mixing of air. The material can be prevented from remaining on the peripheral surface.
[0003]
Moreover, what was disclosed by patent document 1 and patent document 2 is known as another material extrusion apparatus.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-81981 [Patent Document 2]
Japanese Patent Laid-Open No. 2-56271
[Problems to be solved by the invention]
However, in the conventional extrusion apparatus shown in FIGS. 3 and 4, the amount of extrusion tends to decrease rapidly when the material in the container decreases, and the material discharge on the coating apparatus side is continuous. However, there is an inconvenience that a new material container must be replaced with a certain remaining amount (see FIG. 4). In this regard, according to experiments by the present inventor, it is clear that when a container containing 17 kg of silicone having a viscosity of 250 Pa · s is used, a residual amount of about 1000 g is produced.
Moreover, since the operation | movement of the coating device connected to the extrusion apparatus must be stopped during the container exchange, the inconvenience which reduces the coating efficiency of material significantly is caused.
[0006]
Further, as shown in FIG. 7, Patent Document 1 provides two tanks containing materials so that the material in the tank can be supplied. However, when the material in one tank decreases, the other The material is switched so as to supply the material in the tank, and is not configured to enable simultaneous supply. In addition, this document does not have a configuration that eliminates the material remaining inherent in the case where the extruded member as shown in FIG. 3 is used.
[0007]
Furthermore, Patent Document 2 uses a single syringe containing a material, controls the pressure in accordance with the remaining amount of liquid in the syringe, and enables a certain amount of discharge. Is not adopted, and the apparatus is inevitably shut down when the material is replenished.
[0008]
OBJECT OF THE INVENTION
The present invention has been devised by paying attention to such inconveniences, and its purpose is to reduce the waste of materials as much as possible and to hinder the coating efficiency of the coating device connected to the extrusion device. An object of the present invention is to provide an apparatus for extruding viscous materials that does not come.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention includes a plurality of extrusion units containing viscous materials, and in the viscous material extrusion apparatus capable of extruding the materials by applying pressure to the materials in the extrusion units.
Pressure is applied to the material in any one of the extrusion units to extrude the material, and when the material in the extrusion unit falls below a predetermined amount, pressure is applied to the other extrusion unit at the same time. The material in the extrusion unit can be extruded ,
When the pressure is applied to each of the one extrusion unit and the other extrusion unit, the one extrusion unit side is maintained at a higher pressure than the other extrusion unit side . With such a configuration, the material can be extruded from other extrusion units, and continuous material extrusion becomes possible. In addition, the material can be extruded from the one extrusion unit even in a small amount, and even if the planned extrusion amount cannot be obtained, it can be backed up by the material extrusion amount from the other extrusion unit. The quantity can be obtained.
[0011]
In addition, the present invention provides first and second extrusion containers each having first and second containers for containing viscous materials, and disposed on the upper surface side of the materials in the containers, respectively, and provided with extrusion passages for the materials. A member, a communication passage communicating between the extrusion passages, a branch passage branched from the middle of the communication passage and communicating with a predetermined discharge pump, and the extrusion passages from the first and second containers are respectively opened and closed First and second valves, and first and second pressure devices that apply extrusion pressure to the first and second extrusion members, and the first and second pressure devices are alternately or simultaneously provided. A viscous material extrusion apparatus that is actuated to allow the material to be extruded to the discharge pump side,
One of the pressure devices is actuated to further increase the pressure after a predetermined amount of the material in the container on the pressure device side has been pushed out, and the other pressure device is set to a pressure higher than the pressure of either one of the pressure devices. The construction is such that it is operated at a low pressure and the in-container material on the other pressure device side is provided on the discharge pump side so as to be extrudable. Here, when the material in the container on the side of any one of the pressure devices reaches the consumption limit, it is possible to adopt a configuration in which the valve on the container side is closed and replaced with a new material-containing container. it can. By adopting such a configuration, it is possible to replace the containers containing the materials alternately without stopping the operation of the apparatus, and in the case of a system in which the coating apparatus is connected to the extrusion apparatus, continuous coating of the coating apparatus Operation is possible.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 shows a schematic configuration of an extrusion apparatus according to this embodiment. In this figure, an extrusion apparatus 10 is configured to include a first extrusion unit 11 and a second extrusion unit 12 having substantially the same configuration. The first extrusion unit 11 and the second extrusion unit 12 are, for example, a first container 14 and a second container 15 made of a pail can containing a high viscosity material M such as silicone having a viscosity of 250 Pa · s, A first extruding member 20 and a second extruding member 21 respectively disposed on the upper surfaces of the materials M and M in the containers 14 and 15 and provided with extrusion paths 17 and 18 for the materials M and M, respectively. A communication passage 23 that communicates between the extrusion passages 17 and 18, a branch passage 25 that branches from the middle of the communication passage 23 and communicates with a discharge booster pump P (not shown), and the first and second The first valve 27 and the second valve 28 for opening and closing the material flow from the containers 14 and 15 manually or automatically, respectively, and the extrusion pressure on the materials M and M in the first and second containers 14 and 15. To give the first The first pressure device 29 and the second pressure device 30 are provided.
[0014]
The first and second push-out members 20 and 21 are composed of main bodies 32 and 33 each having an inverted T shape, and wiper plates 34 and 35 provided on the lower surfaces of the main bodies 32 and 33, respectively. Holes 34A and 35A communicating with the extrusion passages 17 and 18 in the main bodies 32 and 33 are formed in the center of the wiper plates 34 and 35, respectively, so that the material M can be pushed out to the communication passage 23 side. It has become.
[0015]
The first and second pressure devices 29 and 30 include tables 40 and 41 on which the first and second containers 14 and 15 can be placed, and cylinder devices 42 and 43 that support the tables 40 and 41, respectively. By operating the cylinder devices 42 and 42, the piston rods 45 and 46 can be moved back and forth, so that the tables 40 and 41 can be moved up and down, and an extrusion pressure can be applied to the material M by moving up and down. ing.
[0016]
Next, the overall operation in this embodiment will be described. Here, it is assumed that the material M contained in the first container 14 is consumed.
[0017]
As shown in FIG. 1, the first valve 27 is opened, while the second valve 28 is closed, and the first pressure device 29 supporting the first container 14 is operated to open the container 14. Raise. Here, the first container 14 is raised by a force of about 1 ton to apply pressure to the material M in the first container 14, and the material is supplied to the booster pump P via the communication path 23 and the branch path 25. It comes to be supplied. Thereby, the material M can be continuously discharged from a nozzle of a coating apparatus (not shown) connected to the booster pump P.
[0018]
As shown in FIG. 2, when the material M in the first container 14 decreases and the amount of extrusion per unit time becomes relatively small, the second valve 23 is opened and the first The operating condition of the pressure device 29 is switched to raise the first container 14 with a force of about 2 tons. At the same time, the second pressure device 30 is operated to raise the second container 15 with a force of about 1 ton. Then, while the extrusion amount is reduced, the material extrusion to the communication path 23 is continued from the first container 14, while the reduced amount of the material M is also pushed out from the second container 15 side. The amount of the material M delivered to the branch path 25 is kept constant. While the material M on the second container 15 side is continuously consumed under such conditions, the material M on the first container 14 side can be continuously extruded while reducing the amount of extrusion, and the material is to the limit. M extrusion continues. Then, when the material M in the first container 14 reaches the consumption limit, the first valve 27 may be closed and a new material-containing container may be set.
[0019]
After the first container 14 is replaced with a new container containing material, when the material M on the second container 15 side is reduced, the first valve 27 is opened, and the same principle as described above is used. The material M in the first container is extruded according to the decrease in the material extrusion amount from the second container. Incidentally, in the extrusion apparatus according to the present embodiment, when the same amount of material and container as in the conventional example were used, the remaining amount of material in each container could be suppressed to about 200 grams or less.
[0020]
Therefore, according to such embodiment, the material in a container can be consumed as much as possible, and the practicality excellent in economical efficiency compared with the prior art can be provided. In addition, since the materials of the containers 14 and 15 can be alternately pushed out, it is possible to push out from the other container even while one of the containers is exchanged, enabling continuous material discharge of the coating apparatus, and various machine parts. It is possible to drastically improve the efficiency when adapted to an automatic device that performs sealing or the like.
[0021]
The best configuration, method, and the like for carrying out the present invention have been disclosed above, but the present invention is not limited to this.
That is, the invention has been illustrated and described with particular reference to particular embodiments, but it should be understood that the above-described embodiments are not deviated from the technical idea and scope of the invention. On the other hand, those skilled in the art can make various modifications in shape, material, quantity, and other detailed configurations.
[0022]
For example, in the above-described embodiment, the case where the number of the extrusion units 11 and 12 is two has been illustrated and described, but the number can be further increased. Although the first and second pressure devices 29 and 30 are shown as installation types such as a base (not shown), a frame is provided above the first and first containers 14 and 15 so as to be suspended from the frames. It can also be configured. Furthermore, the above-described pressures applied by the first and second pressure devices 29 and 30 are exemplarily shown, and can be appropriately increased or decreased depending on the viscosity of the material, the design extrusion amount, and the like. it can.
[0023]
【The invention's effect】
As described above, according to the present invention, it is possible to extrude a material while making an alternative use of an extrusion unit, and it is possible to realize continuous material extrusion without stopping operation. An apparatus for extruding a viscous material can be provided.
[0024]
In addition, even when the material of one container is consumed, the material of the other container can be pushed out, so that the container containing the material can be exchanged alternately, and when the application device is connected to the extrusion device, the application A continuous application operation of the apparatus can also be performed. Therefore, even when this apparatus is incorporated in a production line for various machine parts, devices, etc., it is possible to avoid the possibility of hindering continuous operation of the production line.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing the entirety of an embodiment.
FIG. 2 is a schematic configuration diagram when each extrusion unit is operated.
FIG. 3 is a schematic configuration diagram of a conventional extrusion apparatus.
FIG. 4 is a schematic configuration diagram of a conventional extrusion apparatus showing a state in which the remaining amount of material is reduced.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Extrusion apparatus 11 1st extrusion unit 12 2nd extrusion unit 14 1st container 15 2nd container 17 Extrusion path 20 1st extrusion member 21 2nd extrusion member 23 Communication path 25 Branch path 27 1st Valve 28 Second valve 29 First pressure device 30 Second pressure device M Viscous material P Booster pump

Claims (3)

In an apparatus for extruding a viscous material, including a plurality of extruding units containing viscous materials, and applying pressure to the materials in these extruding units to allow the materials to be extruded.
Pressure is applied to the material in any one of the extrusion units to extrude the material, and when the material in the extrusion unit falls below a predetermined amount, pressure is applied to the other extrusion unit at the same time. The material in the extrusion unit can be extruded ,
An apparatus for extruding a viscous material, characterized in that, when pressure is applied to each of the one extruding unit and the other extruding unit, the one extruding unit side is maintained at a higher pressure than the other extruding unit side . First and second containers for containing viscous materials, first and second extrusion members respectively disposed on the upper surface side of the materials in each of these containers and provided with extrusion passages for the materials, and respective extrusion paths A communication passage that communicates with each other, a branch passage that branches from the middle of the communication passage and communicates with a predetermined discharge pump, and first and second openings that open and close the extrusion passages from the first and second containers, respectively. And first and second pressure devices for applying extrusion pressure to the first and second extrusion members, and the first and second pressure devices are operated alternately or simultaneously to supply the material. An apparatus for extruding a viscous material that can be extruded to the discharge pump side,
One of the pressure devices is actuated to further increase the pressure after a predetermined amount of the material in the container on the pressure device side has been pushed out, and the other pressure device is set to a pressure higher than the pressure of either one of the pressure devices. An apparatus for extruding a viscous material, wherein the apparatus is operated at a low pressure so that the material in the container on the other pressure device side can be extruded to the discharge pump side. 3. The container according to claim 2 , wherein when the material in the container on the pressure device side reaches the consumption limit, the valve on the container side is closed so that the container can be replaced with a new material-containing container. Viscous material extrusion equipment.

Images