JP2696158B2 - Method for removing mold release agent and the like and apparatus for removing mold release agent and the like from mold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold release agent for removing carbides, polymerized substances, residues or a release agent applied to a mold surface of a mold adhered to the mold surface of the mold. The present invention relates to an apparatus for removing molds and the like, and an apparatus for removing mold release agents from molds.

[0002]

2. Description of the Related Art Conventionally, a release agent applied to a mold is completely removed from the application surface of the mold at every predetermined shot, and the finished surface of a molded product is deteriorated unless it is re-applied and used. For this reason, the mold was removed from the molding machine, and the release agent applied to the molding surface of the mold was removed by sandblasting or the like.

[0003]

The operation of removing the mold release agent or the like applied to the molding surface of the conventional mold must be performed by removing the mold from the molding machine. As a result, there is a disadvantage that the operating rate of the molding machine is reduced.
In addition, in the case of sandblasting on the molding surface of the mold, the shot material scatters around and the working environment is deteriorated, and there are drawbacks such as the necessity of setting up a dedicated processing room,
Since the molding surface of the mold is polished and worn by the blasting treatment, the work of removing the release agent or the like cannot be frequently performed, and the finished surface of the molded product tends to be deteriorated.

In view of the above disadvantages, the present invention can remove a mold release agent and the like from a molding surface without removing a mold from a molding machine, and cause abrasive wear on the molding surface of the mold. A method of removing a release agent or the like in a mold, which can efficiently prevent the surrounding working environment from deteriorating, and can easily and reliably remove the release agent or the like in a short time. It is an object of the present invention to provide a device for removing a mold release agent or the like.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for explanation only, and do not limit the scope of the present invention.

[0006]

In order to achieve the above object, the present invention provides a method in which dry ice is sprayed at a sonic speed from a spray nozzle onto a coating surface of a mold, such as a mold release agent, using air from a compressor. Mold release in the dry ice injection step of removing the mold agent, etc., and the drying step of injecting dry air from the injection nozzle into the mold where the release agent etc. has been removed after the dry ice injection step and drying. It constitutes a method for removing agents and the like.

Further, the present invention provides a compressor, an injection nozzle capable of injecting air from the compressor to an application surface of a mold release agent or the like through an air hose to dry the application surface, A dry ice supply hose connected to the injection nozzle via an on-off valve, the suction force being applied by air flowing through the injection nozzle, and dry ice for supplying dry ice to a suction nozzle at a rear end of the dry ice supply hose. The dry ice storage container in which the mold is stored constitutes a device for removing a mold release agent or the like.

[0008]

The apparatus for removing a mold release agent or the like configured as described above sucks dry ice in a dry ice storage container by a dry ice supply hose by injecting air from a compressor from an injection nozzle. Because it is sprayed at the speed of sound with air, it is sprayed on the molding surface of the mold to remove the release agent and the like by the impact force, and by blowing low-temperature dry ice on the molding surface of the mold Thermal shock occurs, and the release agent and the like are efficiently removed. Thereafter, only air from the compressor is injected to the molding surface of the mold, and the molding surface of the mold is dried in a short time.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 5, reference numeral 1 denotes a device for removing a mold release agent and the like. An injection nozzle 6 for injecting air from the compressor 2 to an application surface of a mold 5 of a molding machine 4 such as a mold release agent through an air hose 3, and an injection nozzle 6 connected to the injection nozzle 6.
And a suction nozzle 8 at the rear end of the dry ice supply hose 7 where a suction force is applied by air flowing through the air, and a dry or pelletized or lump-shaped mass located near the inner bottom. A dry ice storage container 10 in which ice 9 is stored.

As shown in FIG. 2, the injection nozzle 6 has a horizontal passage 11 and a vertical passage 12 formed at a substantially right angle so as to communicate with a substantially central portion of the horizontal passage 11 or at an acute angle with the supply side. Nozzle body 13 formed with
The air hose 3 is screwed to the supply side of the horizontal passage 11 of the nozzle body 13 so that a small-diameter end is located substantially at the center of the horizontal passage 11, and is fixed by a lock nut 14. And a nozzle tube 19 having a small diameter portion 18 screwed and fixed to the discharge side of the horizontal passage 11 of the nozzle body 13. And a connection fitting 21 having an on-off valve 20 attached as needed, which is attached so as to connect the vertical passage 12 of the nozzle body 13 and the dry ice supply hose 7.

As shown in FIGS. 3 to 5, the dry ice storage container 10 has a storage container 23 having an upper opening in which at least three or more casters 22 for traveling on the floor surface are attached at a lower portion, and the storage container 23. A chute 24 formed on one inner side of the bottom to guide the dry ice 9 stored in the storage container 23 on one lower side;
A mounting bracket 26 having a plurality of sleeves 25 attached to the inner wall surface of the storage container 23 so that the dry ice 9 guided to one lower side of the storage container 23 can be sucked.
A pipe-shaped suction nozzle 8 connected to the dry ice supply hose 7 having an upper part bent at a substantially right angle so as to be vertically movable, and a portion near the tip of the suction nozzle 8 and near the tip. An air intake port 29 is provided above and below the upper portion of the storage container 23 so that air can be supplied through upper and lower air supply holes 27 and 28 having an inner diameter smaller than the inner diameter of the suction nozzle 8. The suction nozzle 8 includes an air supply pipe 30 positioned above and a suction nozzle vertical movement device 31 attached to the storage container 23 for vertically moving the suction nozzle 8.

One end of the suction nozzle vertical moving device 31 is attached to a portion of the suction nozzle 8 protruding outward from the opening of the storage container 23 via a mounting bracket 32,
A biasing spring 34 for biasing the suction nozzle 8 attached at the other end thereof to the outer wall surface of the storage container 23 corresponding to the portion via a mounting bracket 33 so as to always be positioned downward; , A supporting bracket 35 fixed to the lower outer wall surface of the storage container 23 at a position where the is located, a foot pedal 37 rotatably mounted on a support shaft 36 mounted on the supporting metal 35, and Pedal 37
A rod 39 rotatably attached to a pivot bar 38 which pivots vertically by the operation of the foot pedal 37 integrally molded with the rod 39, and is fixed to the suction nozzle 8 attached to the tip of the rod 39. And the connecting fitting 40 formed.

A device 1 for removing a mold release agent or the like from a mold having the above structure.
By opening the mold 5 attached to the molding machine 4 and opening the on-off valve 20 of the connection fitting 21, the air flowing through the horizontal passage 11 of the nozzle body 13 is sucked into the vertical passage 12. A force acts, and the dry ice 9 in the dry ice storage container 10 is sucked through the dry ice supply hose 7 and the suction nozzle 8, and is stirred and mixed in the nozzle tube 19, and a mold is formed from the nozzle tube 19 at supersonic or sonic speed. 5, a dry ice spraying step is performed in which dirt and the release agent on the molding surface are efficiently and quickly removed by impact force or thermal shock.

Thereafter, if necessary, the on-off valve 20 is closed, and only air is injected from the nozzle cylinder 19 to perform a drying step of drying the mold.

Further, by moving the suction nozzle 8 up and down by the suction nozzle vertical movement device 31, the dry ice 9 is surely prevented from clogging the suction nozzle 8 and the supply of the dry ice 9 to the suction nozzle 8. Can be prevented.

[0017]

Next, different embodiments of the present invention shown in FIGS. 6 to 10 will be described. In the description of the different embodiments of the present invention, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and redundant description will be omitted.

The second embodiment of the present invention shown in FIGS. 6 and 7 is mainly different from the first embodiment of the present invention in that the dry air container 10A and the air hose 3 are connected to the air hose 3. The point that the dryer 41 for making the flowing air dry air is interposed,
Reference numeral 0A is formed so that the suction nozzle 8A having the inflow restriction flange 42 formed at the distal end thereof is fixedly attached to the storage container 23, and the storage container 23 can be vibrated by the vibrator 43. The same effect as that of the first embodiment of the present invention can be obtained by the thus configured apparatus 1A for removing a mold release agent from a mold.

The third embodiment of the present invention shown in FIGS. 8 to 10 differs from the first embodiment of the present invention mainly in that a dry ice production and supply device 44 is used. The mold release agent for the mold configured as described above is configured such that the air mixed with the dry ice 9 from 44 can be injected at a supersonic speed onto the molding surface of the mold by the injection nozzle 6A having the on-off valve 45. Or the like.

The dry ice production and supply device 44
Is a pelletizer 48 for converting carbon dioxide supplied from a carbon dioxide gas tank 46 into pellet-shaped dry ice by the operation of an oil pump 47, a hopper 49 for accommodating pellet-shaped dry ice produced by the pelletizer 48, and a compressor 2 A predetermined amount of the dry ice 9 of the hopper 49 as shown in FIG. 10 provided in a dryer 50 for drying the air from the hopper 49 and an air passage 51 for supplying the dry air from the dryer 50 to the injection nozzle 6A. And a feeder 54 having a rotary valve 53 that is rotated by a motor 52 or the like that supplies the air to the air passage 51.

In the embodiment of the present invention, the dry ice 9 in the form of pellets located near the inner bottom of the dry ice container 10 is suctioned by the suction nozzle 8, but the present invention is not limited to this. Alternatively, a material that can be sucked by the suction nozzle 8 from the upper surface of the pellet-shaped dry ice 9 stored in the dry ice storage container 10 may be used.

[0022]

As is apparent from the above description, the following effects can be obtained in the present invention.

(1) A dry ice jetting step of jetting dry ice at a sonic speed from an injection nozzle to the mold application surface of a mold using a compressor using air to remove the mold release agent, etc. Since the drying step consists of injecting dry air from the injection nozzle into the mold where the release agent and the like have been removed after the ice injection step and drying, the impact force of dry ice injected at the speed of sound from the injection nozzle and the extremely low temperature Due to the occurrence of thermal shock due to spraying, the release agent and the like applied to the mold can be efficiently and quickly removed.

(2) According to the above (1), since the dry ice is jetted at the sonic speed, it is possible to prevent the blasting material from being scattered as in the conventional sand blast and to deteriorate the surrounding working environment. .

(3) According to the above (1), the sprayed dry ice sublimes into the atmosphere, so that it does not remain behind, so that it is not necessary to clean up and the work can be performed efficiently.

(4) According to the above (1), since dry ice is sprayed onto the molding surface of the mold at a sonic speed, it is possible to efficiently prevent the molded surface from being abrasively worn as in conventional sandblasting.

(5) According to the above (1), it is possible to remove the release agent and the like by injecting dry ice at a sonic speed onto the molding surface without removing the mold from the molding machine. Therefore, the operation rate of the molding machine can be improved, and the release agent and the like can be easily removed, so that a molded product having a clean surface can be molded.

(6) According to the above (1), since dry air is injected from the injection nozzle which injected dry ice at a sonic speed into the mold at the portion where the release agent and the like have been removed after the dry ice injection step, it can be dried in a short time. Can be done. Therefore, the mold is dried without rusting, and damage to the mold can be reliably prevented.

(6) Claims (2) and (3) also apply to (1) to (6).
The same effect can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first use state of the present invention.

FIG. 2 is an explanatory diagram of an injection nozzle.

FIG. 3 is a partially broken sectional view of a dry ice storage container.

FIG. 4 is a side view of a dry ice storage container.

FIG. 5 is a plan view of a dry ice storage container.

FIGS. 6 and 7 are explanatory diagrams showing a second embodiment of the present invention.

8 to 10 are explanatory views showing a third embodiment of the present invention.

[Explanation of symbols]

1, 1A, 1B: device for removing mold release agent from a mold, 2: compressor, 3: air hose, 4: molding machine, 5: mold, 6, 6A: injection nozzle, 7: dry ice supply hose, 8, 8A: suction nozzle, 9: dry ice, 10:
Dry ice storage container, 11: horizontal passage, 12: vertical passage, 13: nozzle body, 14: lock nut, 15: open / close valve, 16: connection fitting, 17: venturi tube, 18:
Small diameter part, 19: nozzle cylinder, 20: open / close valve, 21: connection fitting, 22: caster, 23: storage container, 24: chute, 25: sleeve, 26: mounting fitting, 27: upper air supply hole, 28: lower Air supply hole, 29: air intake, 3
0: air supply pipe, 31: suction nozzle vertical moving device,
32: mounting bracket, 33: mounting bracket, 34: biasing spring, 35: supporting bracket, 36: supporting shaft, 37: foot pedal, 38: rotating bar, 39: lot, 40: connecting bracket, 41: dryer, 42: Inflow restriction flange, 4
3: Exciter, 44: Dry ice production and supply device, 45:
On-off valve, 46: carbon dioxide tank, 47: oil pump,
48: pelletizer, 49: hopper, 50: dryer, 51: air passage, 52: motor, 53: rotary valve, 54: feeder.

Claims (3)

(57) [Claims] 1. A dry ice spraying step of injecting dry ice at a sonic speed from an injection nozzle to an application surface of a mold with a release agent or the like using air from a compressor to remove the release agent or the like; A drying step of injecting dry air from an injection nozzle into a mold at a portion where the release agent or the like has been removed after the injection step and drying the mold. 2. A compressor and an injection nozzle capable of injecting air from the compressor onto an application surface of a mold release agent or the like through an air hose to dry the application surface. And a dry ice supply hose connected to the injection nozzle via an on- off valve and having a suction force applied by air flowing through the injection nozzle, and supplying dry ice to a suction nozzle at a rear end of the dry ice supply hose. A device for removing a mold release agent or the like, comprising a dry ice storage container for storing dry ice. 3. A compressor, and an injection nozzle capable of drying the application surface by injecting air from the compressor to an application surface of a mold release agent or the like via an air hose. A feeder for supplying dry ice into the air flowing through the air hose, which is interposed in the air hose via an on- off valve , a hopper for supplying dry ice to the feeder, and a carbon dioxide for supplying dry ice to the hopper. A dry ice production and supply device comprising: a pelletizer for forming carbon dioxide gas from a gas tank into pellet-shaped dry ice.