JP4055922B2 - Cooling mold for blower fan molding - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a type cold blower fan, and in particular type cold blower fan NNaru shape for cooling the blower fan to be molded by an injection molding machine.
[0002]
[Prior art]
A plastic blower fan widely used in automobiles, railway vehicles, construction machines and the like is molded by an injection molding machine. In this case, the plastic melted in the mold provided in the injection molding machine is injected at a high pressure through the nozzle. The mold was left closed in the injection molding machine until the melted plastic was cooled and solidified, and after the plastic had hardened, the mold was opened and the blower fan molded product was taken out.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional method, it takes time for the plastic to harden, and during that time, the injection molding machine cannot perform the next injection molding, and the manufacturing efficiency of the blower fan is relatively low. Further, when the mold is opened and the molded product of the blower fan is taken out, a so-called galling may occur due to the difference in expansion coefficient between the mold and the plastic, and the blower fan may be damaged when taken out.
[0004]
The present invention has been made in view of the current state of molding of such a blower fan, and its purpose is to improve the blower fan molding efficiency in an injection molding machine and to prevent the blower fan from being scratched. An object of the present invention is to provide a cooling die for forming a blower fan that is formed by the above method.
[0005]
[Means for Solving the Problems]
The present invention for achieving the above object includes a substrate, attached to the center portion of the substrate, and the positioning member to be cooled blowing fan is mounted, it coincides with the position of the blade portion of the object to be cooled blowing fan A cooling fan for forming a blower fan having a receiving member attached to receive the blade portion, and a support column vertically installed at a corner of the substrate and rotatably mounted on the support column A support beam that extends horizontally to the center of the substrate, an arm that is vertically movable at one end of the support beam and that is attached to extend radially, and a blade portion of the cooled fan the position further and a pressing mounted member coincide, also whether the receiving member is made of a block having a recess matching the airfoil section of the tip portion of the blade portion, or the blade Characterized by comprising a pin-like member for receiving a tip portion.
[0006]
The cooled air blowing fan in the present invention, in a state in which the blade portion is the root portion of the small of Kutomo blade portion solidified is softened, it is taken out from the mold for blowing fan shaped. And this the cooled blowing fan is mounted on the positioning member, it is subjected cooled held the position of the blade portion of a member and the pressing member. The already be cooled blast fan held by member and the pressing part pressure receives the position of the blade portion which is solidified, while maintaining a regular shape blur - the interior of the root portion of the de-portion is also solidified, the finished It becomes goods.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing the configuration of one embodiment of the present invention, FIG. 2 is a front view of FIG. 1 on which a cooled blower fan is placed, and FIG. 3 is a perspective view showing the configuration of another embodiment of the present invention. 4 is a front view of FIG. 3 on which a cooled blower fan is placed.
[0008]
As shown in these drawings, pillars 2 are erected in the vertical direction at the corners of the substrate 1. A support beam 3 is rotatably attached to the support column 2, and the support beam 3 is disposed so as to extend in the horizontal direction to a substantially central position of the substrate 1.
[0009]
An air cylinder 4 is attached to the tip of the support beam 3, and a moving shaft 5 of the air cylinder 4 is arranged to be movable in the vertical direction, and a support disk 6 is fixed to the end of the moving shaft 5. Has been. Relay arms 7a and 7b are fixed to the support disk 6 by extending in the radial direction of the moving shaft 5, and arms 8a and 8b are fixed to the ends of the relay arms 7a and 7b, respectively. And the press member 10 is attached to the free end of these arms 8a and 8b, respectively.
[0010]
On the other hand, a positioning member 11 on which the cooled blower fan 12 is placed is located at the center of the substrate 1, and the blade shape of the flade portion is located at the tip of each blade portion 12 a of the cooled blower fan 12 at the periphery. A plurality of block-shaped receiving members 13 (see FIGS. 1 and 2) having recesses matching the cross section, or preferably a plurality of pin-shaped receiving members 13 ′ (see FIGS. 3 and 4) movable in the vertical direction are provided. Is provided. In FIG. 1, only one block-shaped receiving member 13 is shown.
And the pressing member 10, vibration of the cooling blower fan 12 which is mounted on the positioning member 11 - are arms 8a, attached to 8b to match the position of the de section 12a. Therefore, as shown in FIG. 2, for example, one of the pressing members 10 attached to the arm 8a is fixed closer to the substrate 1 than the other.
[0011]
In order to move the relay arm 7a in the vertical direction accurately and stably, a guide bar 13a is erected on the relay arm 7a, and the guide bar 13a moves up and down in the guide hole 14 formed in the support beam 3. It is supposed to be.
[0012]
In the present invention having such a configuration, the positioning member 11, the arms 8a and 8b, the receiving member 13 or 13 'and the pressing member 10 are selected corresponding to the type of the blower fan to be cooled, and the selected positioning member is selected. 11 is attached to the substrate 1 so that it is at the center of the cooled fan 12 at the center of the substrate 1 and the receiving member 13 or 13 'is at the tip of each blade 12a of the fan 12 to be cooled. It has been. The selected arms 8a and 8b are attached to the relay arms 7a and 7b, and the selected pressing member 10 is attached to the arms 8a and 8b, respectively.
[0013]
Therefore, depending on the type of blowing fan, the pressing member 10 and the receiving member 13 or 13 'is attached to selected ones of the contact portion shape adapted to shape of the blade portion 12a of the cooling blower fan 12. The mutual distance between the pressing member 10 and the receiving member 13 or 13 'attached to the arms 8a and 8b and the height from the surface of the substrate 1 are also selected in accordance with the type of the blower fan.
For this reason, the positioning member 11 and the receiving member 13 or 13 ′ correctly position and hold the cooled blower fan 12, and the pressing member 10 and the receiving member 13 or 13 ′ are the blade portion 12 a of the cooled blower fan 12. It is adapted to accurately maintain the position.
[0014]
Next, the operation of the present invention will be described.
The blower fan is molded by an injection molding machine (not shown). The injection molding machine is provided with a blower fan mold, and the melted plastic is injected into the mold at high pressure through a nozzle. Then, the melted plastic cools in the mold, the thin blade of the blower fan solidifies, and the base of the thick blade is solidified only on the surface or the inside is still soft, the mold is opened and cooled The blower fan is taken out.
[0015]
The cooling fan is removed from the mold by a robot (not shown). At this time, the support beam 3 rotates around the support column 2 and there is no obstacle on the positioning member 11 of the substrate 1. Set to
[0016]
The center of the cooled fan 12 held by the robot is placed on the positioning member 11 and the tip of each blade portion 12a is placed on the receiving member 13 or 13 '. When the cooled fan 12 is placed on the positioning member 11 or the receiving member 13 or 13 ', the support beam 3 is rotated by a predetermined angle around the support 2 and the center of the moving shaft 5 is cooled. Matched to the center of the fan 12.
[0017]
Next, the air cylinder 4 is actuated and the moving shaft 5 moves downward, so that the support disk 6 is lowered by a predetermined distance, the moving shaft 5 is stopped, and the support disk 6 is moved with respect to the cooled blower fan 12. Stop at a predetermined interval. The pressing member 10 is at the stop position, the blade portion 12a which is already solidified within the cooled air blowing fan 12, to hold the together with the receiving member 13 or 13 '. In this state, the cooled blower fan 12 placed on the positioning member 11 is air-cooled, and the base portion of the blade portion 12a, which has been softened inside, is solidified, and the blower fan is molded. Complete.
[0018]
The to-be-cooled blower fan 12 is taken out from the mold of the injection molding machine with the thin blade portion 12a solidified and the base portion of the at least thick blade portion 12a softened. For this reason, since the molded product of the blower fan is taken out from the mold in a relatively short time, the injection molding machine can perform the next injection molding operation, and the blower fan is efficiently molded.
[0019]
Further, since the cooled fan 12 is taken out of the mold with the inside of the blade portion 12a which is at least thick being unsolidified, it is still soft as a whole, and the difference in coefficient of thermal expansion between the mold and the plastic There is no damage due to galling.
[0020]
The fan 12 to be cooled is placed on the positioning member 11 or the receiving member 13 or 13 'with the blade portion 12a completely solidified and at least the base portion of the blade portion 12a softened. position of the blade portion 12a is cooled is held by the receiving member 13 or 13 'and the pressing member 10. Therefore, the cooled blower fan 12 is cooled and formed into a predetermined shape without being deformed in the cooling process.
[0021]
Further, by selectively exchanging the arms 8a and 8b, the pressing member 10, the receiving member 13 or 13 ', and the positioning member 11, it can be easily used for a blower fan of various shapes.
[0022]
In the embodiment described above, the moving shaft is moved up and down by the air cylinder. However, the present invention is not limited to this embodiment, and the moving shaft can also be moved manually. In the illustrated embodiment, the pressing member holds the blade portion of the cooled fan from above. However, in the present invention, the pressing member can hold the cooled fan from below.
Further, in the present invention, only the receiving member can be provided and cooled without providing the pressing member, but in this case, a weight for applying a pressing force to the positioning member 11 and the boss portion of the cooled blower fan is required.
[0023]
【The invention's effect】
As described above in detail, according to the present invention, the molding efficiency of the blower fan is improved, and the blower fan is molded without being scratched by a galling based on the difference in thermal expansion coefficient between the mold and the plastic. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of an embodiment of the present invention.
FIG. 2 is a front view of FIG. 1 on which a cooled blower fan is placed.
FIG. 3 is a perspective view showing the configuration of another embodiment of the present invention.
4 is a front view of FIG. 3 in which a cooled blower fan is placed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Board | substrate 2 support | pillar 3 support beam 4 air cylinder 5 moving shaft 6 support disk 7a, 7b relay arm 8a, 8b arm 10 pressing member 11 positioning member 12 cooled fan 12a blade part 13, 13 'receiving member 13a guide rod 14 Guide hole

Claims (4)

A substrate, attached to the center portion of the substrate, a receiving member for receiving the positioning member to be cooled blowing fan is mounted, the mounted matches the position of the blade portion of the cooling blower fan the blade portion A cooling mold for blower fan molding, characterized by comprising: A column vertically erected on the corner of the substrate, a support beam rotatably attached to the column and extending horizontally to the center of the substrate, and a vertical movement to one end of the support beam freely in, and an arm mounted to extend radially, the blowing fan according to claim 1, further comprising a pressing member mounted matches the position of the blade portion of the cooling blower fan Cooling mold for molding.   The cooling fan for blower fan molding according to claim 1 or 2, wherein the receiving member comprises a block having a concave portion that matches the airfoil cross section of the tip of the blade portion.   The cooling fan for blower fan molding according to claim 1 or 2, wherein the receiving member is a pin-shaped member that receives a tip portion of the blade portion.

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