JP4340375B2 - Resin filling device and resin member forming device - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to a resin filling device or a resin member forming device.
[0002]
[Prior art]
Conventionally, an injection molding process for obtaining a molded product of a resin member is widely known. However, an injection molding apparatus used for this has a large size depending on the object to be molded, and has various sizes. A mold was used. In the case of such various molds, in order to perform clamping in a sufficient state in any case, a considerable driving force should be provided for the driving part, and the device configuration of the driving part Inevitably had to be enlarged. Not only in such an apparatus for forming a resin member by injection molding or the like, but also in a resin filling apparatus for forming a solidified resin in a gap by filling molten resin with a gap formed in another member. There is a strong demand for weight reduction and miniaturization, and in particular, there has been a demand for an apparatus that allows a user to easily move by manual operation in the above applications.
[0003]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to provide a resin filling device and a resin member forming device which are reduced in size and weight and can be easily moved.
[0004]
[Means for Solving the Problems and Effects of the Invention]
In order to solve the above problems, the present invention provides:
A resin filling device for injecting a molten resin into the gap and filling the gap with a resin filling target in which the gap is formed,
A molten resin injection device for injecting the molten resin and injecting the molten resin into the gap, and a molten resin injection device provided in the molten resin injection device and moved in a predetermined direction by moving the molten resin from the molten resin injection device An integral main body unit is formed including an injection plunger that injects, and an injection air cylinder that is directly or indirectly connected to the injection plunger and moves the injection plunger.
Furthermore, there is provided an injection air supply means that communicates with the injection air cylinder by a flexible ventilation pipe as a separate body from the main unit and supplies air to the injection air cylinder.
The main body unit is movable relative to the injection air supply means via the vent pipe, and the main body unit is moved relative to the molten resin injection position with respect to the gap, and the melting is performed at that position. A resin is injected to fill the gap.
[0005]
By reducing the weight of the main unit and making it separate from the air supply means, it is possible to move only the main unit, and further reducing the weight of the main unit by providing an air cylinder at the part that controls the resin supply Will be made. For example, when the main unit is used by being moved by the moving means, the driving force required for the moving means can be reduced. As a result, various moving means can be applied, the selection range of the moving means is increased, and the running cost is reduced.
[0006]
Then, by providing a gripping portion so that such a filling device can be carried, a fine work of resin filling can be easily performed. For example, when resin filling into gaps is required in the manufacture of resin products, etc., or when it is necessary to close gaps between building members with resin members, etc. at construction sites, etc. Work can be done easily. Since the main unit is reduced in weight as described above, the user's labor in moving the main unit can be reduced, which greatly contributes to improvement of work efficiency.
[0007]
Alternatively, the resin filling target may be a mold provided to itself, and a resin molded body having the shape of the mold internal cavity may be obtained. In that case, the mold clamping device for clamping the mold is directly or indirectly connected to the mold and applies a mold clamping force to the mold, and has flexibility. A mold clamping air supply means that communicates with the mold clamping vent pipe and supplies air to the mold clamping air cylinder can be provided. An integral body unit including the mold, the injection plunger, the injection and mold clamping air cylinders is formed for the mold clamping and injection air supply means, and the body unit is used for the injection. And the mold clamping vent pipe can be configured to be relatively movable with respect to the injection and mold clamping air supply means.
[0008]
Thereby, it becomes possible to move only the main body unit in which a resin member is formed, and the processing place in resin member formation can be changed easily. Thereby, for example, the degree of freedom increases in the layout of the apparatus installation in the factory, and the apparatus is easily organized and stored. In addition, if the ventilation pipe and the main unit are detachable, the device can be moved more easily, and even if the main unit breaks down, it is not necessary to change the entire device, and only the unit needs to be changed. It is possible to easily add or reduce devices in accordance with the number of production.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
FIG. 1 shows a resin filling apparatus as an example of the present invention. Note that a partial sectional view is shown so that the inside of the injection cylinder 35 and the heating cylinder 39 can be grasped. FIG. 5 is a cross-sectional view taken along the line AA in FIG. The outline of the resin filling device 1 will be described. The molten resin injection device 15 for injecting the molten resin and injecting the molten resin into the gap, and the molten resin injection device 15 are provided in the molten resin injection device 15 and melted by moving in a predetermined direction. An integral main body unit 16 including an injection plunger 34 for injecting resin from the molten resin injection device 15 and an injection air cylinder 32 that is directly or indirectly connected to the injection plunger 34 and moves the injection plunger 34. Is formed. The resin injection in the present invention includes not only a mode in which the discharge pressure is high but also a so-called dripping mode in which the discharge pressure is low.
[0010]
As schematically shown in FIG. 7, as a separate body from the main unit 16, the flexible air vent pipe 52 communicates with the air cylinder 32 for injection and supplies air to the air cylinder 32 for injection. Injecting air supply means 60 is provided. Various injection air supply means 60 can be used as long as they can supply air to the injection air cylinder 32. For example, various air pressure generators such as a compressor, a tank, and an aftercooler can be used. The main body unit 16 can be moved relative to the injection air supply means 60 via the injection vent pipe 52, and the position of the main body unit 16 is adjusted by the relative movement to determine the injection position of the molten resin into the gap. It will be. For example, in the resin filling object 3 having the gap 3a as shown in FIG. 1, the nozzle 17 is directed to the position of the gap 3a and the resin is injected and filled into the gap 3a. The shape of the gap 3a may be any shape that can be filled with resin, and may be, for example, an elongated gap formed between adjacent plate members (for example, a gap between wall surfaces in a building).
[0011]
Thus, by making the main body unit 16 separate from the injection air supply means 60, only the main body unit 16 can be moved. That is, it is composed of a pneumatic generator such as a compressor, a tank, an aftercooler, etc., and it is not necessary to move the injection air supply means that requires a considerable weight. Even if it does not depend on, it can be moved manually. In addition, even when the main unit 16 is mechanically moved by a robot or the like, it is possible to use a device having a small driving force. Since the electrical energy is also very small, it leads to cost reduction (for example, power cost saving).
[0012]
Returning to FIG. 1, the resin filling device 1 includes an injection air cylinder 32 as means for driving the injection plunger 34, which is lighter than other actuators such as a hydraulic cylinder and an electric motor. Because of its small size, it contributes to reducing the overall size and weight of the device. As the injection air cylinder 32, a standard cylinder having a drive shaft as shown in the embodiment can be used. However, if the injection air cylinder 34 can be driven, a special cylinder or the like (rod Various types of cylinders may be used.
[0013]
A flexible injection vent pipe 52 that communicates the injection air cylinder 32 and the injection air supply means 60 (FIG. 7) is provided so that air can be supplied to the injection air cylinder 32. However, various materials such as metal and non-metal (for example, resin) can be used for the injection vent pipe 52. In particular, when the non-metallic material (for example, resin) is used, the weight reduction effect is increased. As described above, an actuator that can drive the injection plunger 34 and a medium that supplies power to the actuator are used as an air cylinder and a flexible ventilation pipe (for example, a lightweight ventilation pipe made of resin). Thus, a synergistic effect for reducing the weight and size of the main unit 16 is produced.
[0014]
The material can be supplied by putting a resin material into the hopper 50. In FIG. 1, the resin is charged through the hopper 50, but the present invention is not limited to this. For example, as shown in FIG. 2, a resin material supply means 65 (see FIG. 2) provided with a flexible hose-like material supply path 43 so as to communicate with the material tank 41 and provided separately from the main unit 16. 7), the material can be supplied automatically or semi-automatically (for example, the resin material supplying means 65 is configured in a hopper shape, and the material supply is automatically detected by detecting the shortage of the resin material. The supply port of the hopper is opened and closed by operating a switch provided in the main unit 16 or provided separately from the main unit 16 and electrically connected to the resin material supply means 65. Can also be). As schematically shown in FIG. 7B, when the main unit 16 and the resin material supply means 65 are provided separately, the hopper 50 can be omitted and the main unit 16 can be further reduced in weight. . Further, if the material supply path 43 is a flexible member (for example, a resin hose-like member), the main unit 16 can be easily moved. Such a material supply path 43 can be similarly provided in the resin member forming apparatus 2 as shown in FIG. 3, and the supply method can be the same as described above. Details of the resin member forming apparatus 2 will be described later.
[0015]
Returning to FIG. 1, the resin material is once charged into the material tank 41 through the material charging port 40, moved into a heating cylinder 39 having a heater as a plasticizing device, and melted by heating of the heating cylinder 39. Resin. The molten resin is injected from the nozzle 17 by the movement of the injection plunger 34. The nozzle 17 can be configured to have a small opening area on the discharge side so that the discharge resin is constricted, that is, the resin is discharged in a concentrated manner in one direction. The moving speed and driving force of the injection plunger 34 can be performed by pressure, flow rate, speed control, etc. in the air cylinder. For example, a pressure control valve, a flow control valve, a speed control valve, etc. are provided in a part of the injection vent pipe, and the air state supplied by a known air actuator adjustment method can be adjusted. Can be set to any value.
[0016]
In addition, polypropylene etc. can be used for molten resin used as the object of injection molding, for example. (Note that the present invention is not limited thereto, and known materials such as engineer plastics such as polyacetal, polyamide, polycarbonate, modified polyphenylene oxide, polybutylene terephthalate, polysulfone, polyphenylene sulfide, and other general-purpose plastics are used. Can do)
[0017]
In addition, the present invention can take a modified example such as the part 3. In this embodiment, the AA sectional view in FIG. 3 is the same as that in FIG. 1 and is shown in FIG. FIG. 6 is a sectional view taken along line BB in FIG. As shown in the side view of FIG. 3 and the front view of FIG. 4, a small injection molding machine capable of manufacturing a molded product having an internal cavity shape of the mold 12 as a mold 12 provided for the resin filling target. It is comprised as a resin member formation apparatus which makes | forms this form. The structure of the resin member forming apparatus 2 is connected to a molten resin injection device 15 (hereinafter also referred to as an injection device 15) that can inject molten resin, and the molten resin is injected into the interior. The mold 12 is formed as described above. The mold 12 has a cavity with a predetermined shape inside thereof, and is provided so as to communicate with the molten resin injection device 15. Then, the molten resin is injected and filled into the internal cavity, and when it is cooled and solidified, a molded product of the resin member is obtained. As the injection device 15, various types of injection devices used in injection molding such as a plunger type, a pre-plastic type, and a screw type can be used. The mold 12 is fixed to the mold fixing member 42, and the mold fixing member 42 and the air cylinder fixing member 44 that fixes the injection air cylinder 32 that drives the injection plunger 34 are integrally formed by the tie bar 22. It is fixed.
[0018]
As in the case of FIG. 1, these injection devices 15 include an injection plunger 34 connected to the drive shaft of the injection air cylinder 32, and an injection that moves by receiving the drive of the injection air cylinder 32. Molten resin is injected into the mold 12 by the plunger 34. Further, the mold 12 is fixed integrally with the injection device 15 by the mold fixing member 42, the air cylinder fixing member 44, the tie bar 22, and the like.
[0019]
The mold clamping device is connected to a mold clamping air cylinder 30 that is directly or indirectly connected to the mold 12 and applies a mold clamping force to the mold 12, and a flexible mold clamping air pipe 54. A mold clamping air supply means 62 (see FIG. 7) for supplying air to the mold clamping air cylinder 30 is provided. The mold 12 includes an upper mold 12a connected to the molten resin injection device 15, and a lower mold 12b provided so as to be close to and away from the upper mold 12a. The mold clamping air cylinder 30 and the lower mold 12B, which is a part of the mold, are connected to each other, are driven by the mold clamping air cylinder 30, are brought into pressure contact with the upper mold 12a, and are clamped. Note that after the molded body is formed, the lower mold 12b can be moved to open the mold. The technique of clamping with a mold clamping device and filling a mold with a molten resin to obtain a molded body is well known in injection molding, but the present invention is provided with an air cylinder in the driving means for clamping the mold. In this respect, it has a feature different from the conventional one. That is, the weight difference is larger than that of a conventional clamping device using a hydraulic cylinder or an electric motor, which is particularly effective so that the main unit 16 can be moved manually. Weight reduction can be achieved.
[0020]
3 and 7, the injection and mold clamping air supply means 60 and 62 are integrated with the mold 12, the injection plunger 34, the injection air cylinder 32, and the mold clamping air cylinder 30. The main body unit 16 is movable relative to the injection and mold clamping air supply means 60 and 62 via the injection vent pipe 52 and the mold clamping vent pipe 54. Since the weight reduction as described above is performed, the relative movement of the main body unit 16 can also be performed manually, and the processing place where the resin member is formed can be easily changed. This increases the degree of freedom in the layout of the device installation in the factory, and makes it easier to organize and store the device. In addition, if both the vent pipes 52 and 54 and the main unit 16 are detachable, the apparatus can be moved more easily. Even if the main unit 16 breaks down, it is not necessary to change the entire apparatus. In addition, it is possible to easily increase or decrease the number of devices in accordance with the number of resin members produced. The same applies to the resin filling apparatus shown in FIGS. 1 and 2.
[0021]
Conventionally, there are many cases where a place where a resin member is manufactured and a place where the resin product is used are many, and in such a case, product management (for example, inventory management) of the resin member is troublesome. Has occurred. Since the present invention is reduced in size and weight when taken in the form of the present invention, it can be easily moved to a place where the resin member is actually used, and the resin member can be directly manufactured at the use site. In addition to the above-mentioned various effects, it will be included.
[0022]
As described above, both the injection and mold clamping drive means are air cylinders to reduce the weight and size of the apparatus, and the vent pipes 52 and 54 communicating therewith are both flexible. By using the member, the main unit 16 can be easily moved. In addition, the weight reduction of the main body unit 16 is achieved by forming both the injection and mold clamping ventilation pipes 52 and 54 with a lightweight material such as a resin member.
[0023]
Further, as shown in FIGS. 1 to 4, any of the main body units 16 described above can be provided with a gripping portion 13 so that the user can hold the main body unit 16. And the relative positional relationship between the main body unit 16 and the resin forming object is adjusted by moving integrally with the main body unit 16 while holding the grip portion 13. In addition, although the grip part 13 is made into the part gripped by the user in the Example, it does not mean that it is limited to this. That is, a connecting member for connecting to other body unit moving means for moving the body unit 16 (for example, a robot having an arm for fixing the body unit and moving the arm to an arbitrary position by a servo mechanism or the like). It can be. If it does in this way, the main body unit 16 can be moved to arbitrary positions with a robot etc., and it will contribute to automation of an apparatus. Since the main unit 16 has various weight-reducing configurations as described above, the driving force required for the main unit moving means can be reduced.
[0024]
Further, as shown in the present embodiment, the gripping portion 13 can be shaped as follows. That is, the handle 13a that is a gripping position by the user can be formed in an elongated shape so as to be substantially parallel to the injection direction of the molten resin by the molten resin injection device 15 (the vertical direction in FIG. 1). The injection direction can be a direction in which the injection amount of the molten resin from the molten resin injection device 15 is maximized, that is, a direction in which the discharged resin is concentrated. The gripping portion 13 is fixed to the main body unit 16 at one end, extends in a direction away from the main body unit 16 with the fixed position as a base point, and further bends substantially parallel to the molten resin injection direction of the main body unit 16. It is formed in a letter shape. When formed in this way, the processing for forming the gripping portion is easy to perform, and a simple structure can be obtained, which is easy for the user to hold. Moreover, when formed in this way, when the user holds the main body unit 16 so that the injection direction of the resin is in the vertical direction, the grip is less fatigued (that is, the grip is easier to hold). In this embodiment, in the handle 13a as a gripping position provided as a rod-shaped member, the longitudinal direction of the rod-shaped member is substantially parallel to the injection direction, but is provided so as to be substantially perpendicular to the injection direction. Also good. When the handle 13a as a gripping position is provided in the direction parallel to the injection direction or close to the vertical direction as described above, the nozzle is directed so that the injection direction of the molten resin is vertically downward. It is easy to hold in the state and the operability is improved. Note that the handle 13a as a gripping position by the user may be formed in an elongated shape so as to be substantially in the same direction as the longitudinal direction of the main unit 16.
[0025]
Note that the shape of the gripping portion 13 is not limited to this, and any shape that can be easily estimated by those skilled in the art (for example, a circular handle, an ellipse shape, a square handle shape, or use) The user can take various shapes (such as a shape that substantially matches the shape of the palm of the user when gripped by the user), and the mounting position of the gripping portion is not limited (for example, in the vicinity of the air cylinder 32, It may be installed in various places such as the vicinity of the injection cylinder 35).
[0026]
Further, a switch that performs switching of resin injection may be provided in a part of the grip portion 13. This switch can be electrically connected to the air cylinder 32 or the like, and resin injection can be started by operating the switch. Alternatively, a switch that is electrically connected to the air cylinder 30 may be provided in the grip portion 13 so that the mold 12 can be opened and closed by a switch operation. In this way, since the user can send a command signal such as an injection start to the apparatus by a few finger operations while grasping the gripping part, the operability of the apparatus becomes extremely high.
[0027]
Further, any of the main body units 16 shown in FIGS. 1 to 4 can include a flexible suspension member (a metal wire rope, a chain, etc.) for suspending the main body unit 16. The eyebolt 80 (see FIG. 1 and the like) as a connecting fitting for connecting the suspension member and the main unit 16 is held, and the user holds the main unit 16 while suspending the main unit 16 with a chain or the like as the suspension member. The main unit 16 can be moved by holding the part 13. This eliminates the need for the user to support the weight of the main unit 16 (for example, the user can hang the resin member forming apparatus 1 like a pendulum while hanging from a ceiling or the like with a chain). Workability is improved. In addition, a so-called overhead crane or the like that includes winding means (for example, a wire rope, a winding reel for winding a chain, etc.) at the base point position of such a suspension member and can change the position of the suspension target to an arbitrary height. ), And the hanging height of the main unit 16 may be changed in accordance with the usage mode. In addition, by making the end part (for example, connection part with a ceiling etc.), such as a chain, as a suspension member movable (for example, providing a guide rail in a ceiling etc. and supporting it movably with the guide rail) The moving range will be further widened.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional side view showing an example of a resin filling apparatus of the present invention.
FIG. 2 is a diagram showing a modification of FIG.
FIG. 3 is a partial side sectional view showing an example of a resin member forming apparatus.
4 is a front view of FIG. 3;
5 is a cross-sectional view taken along arrow AA in FIG.
6 is a cross-sectional view taken along line BB in FIG. 3;
FIG. 7 is a diagram schematically showing a resin filling device and a resin member forming device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Resin filling apparatus 2 Resin member forming apparatus 12 Mold 13 Gripping part 13a Handle 15 Molten resin injection apparatus 16 Main body unit 30 Clamping air cylinder 32 Injection air cylinder 34 Injection plunger 52 Injection vent pipe 54 Mold clamping passage Trachea 60 injection air supply means 62 mold clamping air supply means

Claims (5)

A resin filling device for injecting molten resin into the gap and filling the gap with resin for a resin filling target in which a gap is formed,
A molten resin injection device for injecting the molten resin and injecting the molten resin into the gap, and a molten resin injection device provided in the molten resin injection device and moved in a predetermined direction by moving the molten resin from the molten resin injection device An integral main body unit is formed including an injection plunger that injects, and an injection air cylinder that is directly or indirectly connected to the injection plunger and moves the injection plunger.
Further, as a separate body from the main body unit, there is provided an injection air supply means that communicates with the injection air cylinder by a flexible injection vent pipe and supplies air to the injection air cylinder,
The main unit is movable relative to the injection air supply means via the injection vent pipe, and the injection position of the molten resin relative to the gap is adjusted by the relative movement. Resin filling device. A molten resin injection device for injecting the molten resin;
The molten resin is provided in communication with the molten resin injection device so that the molten resin is injected into the interior, and a cavity having a predetermined shape is formed therein, and the molten resin to be injected and filled can be molded into the cavity shape. A mold and a mold clamping device for clamping the mold;
The molten resin injection device is
An injection plunger that injects the molten resin into the cavity by moving in a predetermined direction; an injection air cylinder that is directly or indirectly connected to the injection plunger and moves the injection plunger;
An injection air supply means that communicates with the injection air cylinder by a flexible injection vent pipe and supplies air to the injection air cylinder;
The mold clamping device is:
A mold clamping air cylinder which is directly or indirectly connected to the mold and applies a mold clamping force to the mold;
A mold clamping air supply means that communicates with a flexible mold clamping vent pipe and supplies air to the mold clamping air cylinder;
An integral body unit including the mold, the injection plunger, the injection and mold clamping air cylinders is formed with respect to the mold clamping and injection air supply means, and the body unit is used for the injection and mold. A resin member forming apparatus, wherein the resin member forming apparatus is movable relative to the injection and mold clamping air supply means via a clamping vent pipe. The resin filling device or the resin member forming device according to claim 1, wherein the main body unit is provided with a gripping portion so as to be gripped by a user of the resin filling device. 4. The resin filling according to claim 3, wherein a gripping position by the user in the gripping portion is formed in an elongated shape so as to be substantially parallel to an injection direction of the molten resin by the molten resin injection device. Device or resin member forming device. One end of the gripping portion is fixed to the main body unit, extends from the fixing position as a base point in a direction away from the main body unit, and further bent so as to be substantially parallel to the injection direction of the molten resin of the main body unit. The resin filling apparatus or the resin member forming apparatus according to claim 4, wherein the apparatus is formed in a substantially L shape.

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