JPH0721437B2 - Unbalance correction device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an unbalance correction device for correcting an unbalance of a rotating body or the like measured in a dynamic balance test.

[Prior Art] As a method of correcting the balance of a rotating body, a method of removing a mass corresponding to an unbalance amount from a heavy position of the rotating body (minus correction) and a method of adding a weight to a light position on the contrary ( As a positive correction method, a method using a drim weight (a mixture of an adhesive and a metal powder) has recently been adopted. This method discharges the drim weight (fluid state) in an amount corresponding to the measured unbalanced amount of the test body (rotating body), for example, from the discharge nozzle to the place where the test body should be added, and the drim attached to the test body is discharged. This is a method of hardening the weight.

[Problems to be Solved by the Invention] In the balance correction using the above-described drim weight, after discharging the drim weight corresponding to the unbalanced amount from the discharge nozzle, the fluid drim weight is quickly and completely cut from the nozzle tip. Need to be separated. On the other hand, the drim weight is required to have a property of quickly and strongly adhering on the test body side, but this property is contrary to the demand for improvement of the detachability at the ejection port. Conventionally, the separation of the drim weight 6 from the discharge nozzle 13 has been performed with reference to FIGS. 5 (a), (b),
As shown in (c), the drim weight itself was left to fall naturally after the discharge valve was closed. Therefore, there is a problem in that the drim weight is hardened at the discharge port of the discharge nozzle before the drim weight is dropped on the surface of the test body, and the discharge nozzle is blocked.

Therefore, the present invention quickly removes the drim weight from the discharge port without changing the properties of the conventionally used drim weight so as not to block the discharge port, and the discharged drim weight is tested on the surface of the test body. An object of the present invention is to provide an unbalance correction device that can be quickly cured with.

[Means for Solving Problems] In order to solve the above problems, the present invention employs the following configurations.

In other words, the unbalance correction device according to the present invention discharges the fluid weight stored in the storage unit from the discharge nozzle to a predetermined position on the surface of the test body by an amount corresponding to the unbalance amount to adhere and solidify it. In the unbalance correction device for correcting the unbalance, the discharge nozzle is provided with a partition to divide into a fluid weight passage, a cooling fluid passage adjacent to the fluid passage, and a heating fluid passage further outside thereof. Characterize.

[Operation] When the drim weight is discharged from the discharge nozzle, a cooling fluid such as cold air is caused to flow in the fluid passage close to the drim weight flow passage, and is sprayed onto the drim weight hanging from the discharge nozzle to quickly separate the drim weight. be able to. Further, while flowing the cooling fluid, a heating fluid such as hot air is caused to flow in the fluid passage outside the cooling fluid passage and is sprayed on the drim weight discharged on the surface of the test body to accelerate the solidification of the drim weight. You can

[Embodiment] FIG. 1 is a view showing the configuration of an embodiment of the present invention, in which a fluid-like drim weight 6 stored in a storage tank 2 is unbalanced by a discharge pump 3 installed at the tip of the tank. An amount corresponding to the amount is ejected from the ejection nozzle 4 to the place to be added to the test body 1.

As shown in FIG. 2, the tip of the discharge nozzle 4 has partition walls 5, 5
It is divided into three types by. In the figure, a drim weight passage 10 through which the drim weight 6 circulates is provided in a core portion, a cooling fluid passage 11 is provided so as to surround the weight passage 10, and the cooling fluid passage 11 is further surrounded. Then, a heating fluid passage 12 is provided. The discharge port of the cooling fluid passage 11 is directed toward the discharge port side of the drim weight flow passage 6, and the discharge port of the heating fluid passage 12 is formed toward the surface side of the test body. The cold air discharged from the cooling fluid passage 11 is sent from the cold air sending device 7, and the hot air discharged from the heating fluid passage 12 is sent from the hot air sending device 8.

In order to correct the unbalance by the device configured as described above, as shown in FIG. 2 (a), first, the drip weight 6 corresponding to the unbalance weight obtained by the dynamic balance test is discharged from the discharge pump 3 Is driven for a predetermined time and the discharge nozzle 4
Discharge from. After the ejection, the cold air is blown from the cooling fluid passage 11 to the drim weight 6 that hangs down from the nozzle, so that the drim weight 6 is separated from the nozzle 4. Further, as shown in FIG. 3C, hot air is blown from the heating fluid passage 12 to the drim weight 6 discharged on the surface of the test body 1, and the fixation of the drim weight is promoted by the temperature and pressure of the hot air. At this time, when the temperature of the hot air is transmitted to the drim weight flow passage 10, the drim weight in the nozzle is hardened. Therefore, in order to prevent this, the cooling air passage 11 continues to flow cold air.

By blowing the cool air and the hot air respectively as described above, it is possible to promptly remove the drim weight from the discharge nozzle and promote the fixation on the surface of the test body. When the hot air is blown, cooling water may be sent out instead of the cold air as shown in FIG. 3 to prevent the temperature rise of the drim weight passage 10. If a small amount of this running water is introduced into the drim weight passage 10, it is possible to prevent the drim weight from sticking to the inner wall of the nozzle. When water is supplied as the cooling fluid, the fluid passage may be a spiral pipe surrounding the drim weight passage 10 as shown in FIG.

EFFECTS OF THE INVENTION As is apparent from the above description, according to the unbalance correction device of the present invention, when performing unbalance correction by addition using the fluid weight, the fluid weight is separated from the discharge nozzle. Then, the adherence to the surface of the test body can be done quickly, and the efficiency of the correction work can be improved. Further, it has become possible to prevent the fluid weight from being hardened in the discharge nozzle and blocking the nozzle.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention, and FIG. 2 (a).
(B) and (C) are enlarged views of essential parts for explaining the procedure for correcting the unbalance, and FIGS. 3 and 4 are explanatory views of a modified embodiment, and FIG.
(A) (b) (c) is a figure explaining the procedure of unbalance correction by the conventional apparatus. 1 ... Test body, 2 ... Storage tank, 4 ... Discharge nozzle, 6 ... Drim weight, 7 ... Cold air delivery device, 8 ... Hot air delivery device, 10 ... Drim weight flow passage, 11 ... Cooling fluid passage, 12 ... Heating fluid passage

Claims (1)

[Claims] Claims: 1. A fluid weight, which is stored in a storage unit, is discharged from a discharge nozzle to a predetermined location on the surface of a test sample by an amount corresponding to the unbalance amount, and the unbalance of the adhered and solidified test sample is corrected. In the balance correction device, the discharge nozzle is provided with a partition to divide into a fluid weight passage, a cooling fluid passage adjacent to the fluid weight passage, and a heating fluid passage further outside thereof. apparatus.