JPH0881Y2 - Rubber flash removal device for metal-rubber composite products - Google Patents

Description

[Technical Field] The present invention relates to an apparatus for removing rubber burrs adhering to unnecessary portions in a metal-rubber composite article in which a rubber material is adhered and molded on a metal base.

"Prior Art and Its Problems" This type of metal-rubber composite product is widely used, for example, in various valves of vehicles. FIGS. 4A and 4B show an example of this type of metal-rubber composite product 11, in which a metal base 12 having a rotation center axis O includes a flange 12a and a shaft 12b, and on the flange 12a, A rubber material 13 having the same rotation center axis O as the rotation center is attached. When forming the metal-rubber composite product 11, as shown in FIG. 5, the metal base 12 is held in the holding recess 14 a of the lower mold 14, and the upper mold 1 is held on the lower mold 14.
Cover 5 A molding space for the rubber material 13 to be bonded onto the flange 12a is formed in the upper mold 15. An adhesive for attaching the rubber material 13 is applied to the flange 12a, if necessary. The fluid rubber is composed of rubber mold 16 and upper mold 15
The metal-rubber composite article 11 is obtained by being supplied into the molding space 15a through the sprue 17 formed by, and then vulcanized.

During this rubber molding, the flange 12a of the metal base 12 is
The upper mold 15 is pressed against the flange 12a with a strong force so that the rubber material 13 does not adhere to the upper unnecessary portion, but it is impossible to completely prevent the rubber material 13 from protruding to the unnecessary portion on the flange 12a. It was difficult. The chain line in FIGS. 4A and 4B shows this protruding and unnecessary and harmful rubber flash 13a.

Conventionally, the rubber flash 13a has been scraped off manually by using a knife such as a knife, or scraped off by using a lathe for metal processing. However, the former has poor work efficiency, and the latter can remove the rubber flash 13a with high work efficiency, but also scrapes off a part of the metal base 12. Therefore, the dimensional accuracy of the metal base 12 deteriorates, and the metal base 12
When 12 is subjected to surface treatment such as plating, the effect of the surface treatment is lost.

"Object of the Invention" Based on the above-mentioned awareness of the problems regarding the metal-rubber composite product, an object of the present invention is to provide a device capable of removing the rubber flash with high working efficiency without scraping off the metal base.

"Outline of the invention" The present invention grasps the metal base of the metal-rubber composite product,
A work rotating mechanism that rotates about its rotation center; a deburring having a rubber deburring tool capable of contacting a metal base portion of a metal-rubber composite product held by the work rotating mechanism, to which a rubber material should not be attached, And a resilient approaching mechanism for applying a resilient approaching force between the work rotating mechanism and the flash removing mechanism.

According to this configuration, the rubber flash removing tool elastically approaches the metal-rubber composite, so by appropriately setting the material and shape of the tool, only the rubber flash can be removed without cutting the metal base. Can be removed.

It is desirable that the elastic approach mechanism can adjust the elastic approach force. Such an apparatus can be configured by, for example, an apparatus including an air cylinder device and a pressure regulator that adjusts the supply pressure to the air cylinder device.

"Embodiment of the Invention" The present invention will be described below with reference to illustrated embodiments. The deburring device for a metal-rubber composite according to the present invention comprises a work rotating mechanism 20 and a deburring mechanism 30 as shown in FIGS. 1 and 2. The work rotation mechanism 20 is substantially the same as the work rotation mechanism used for a lathe or the like, and includes a collet chuck 21 for gripping and releasing the shaft portion 12b of the metal base 12 of the metal-rubber composite product 11, and this collet chuck.
21 and a drive mechanism 22 for rotating the metal-rubber composite product 11 held by the same 21 about the rotation center axis O.

The rubber flash removing mechanism 30 is movably supported on a feed base 31 via a slide guide 32. The feed table 31 is
It can be moved in a direction perpendicular to the paper surface of FIG. 1 (direction of arrow A in FIG. 2) by a feeding mechanism (not shown). On the other hand, the movement direction of the rubber flash removing mechanism 30 is a direction orthogonal to the feeding direction of the feed base 31 and a direction toward and away from the work rotating mechanism 20 (direction of arrow B). A bite holder 33 is mounted and supported on the rubber flash removing mechanism 30, and a rubber flash removing bite 35 is attached and detached by a detachable bolt 34. The rubber flash removing bite 35 is fixed to the bite holder 33 in a direction substantially parallel to the rotation center axis O in the illustrated example, but this direction can be appropriately changed. This rubber flash removal tool 35
The blade is formed as a blade having an ability to remove the rubber flash 13a attached to the metal base 12, but a low ability to cut the metal base 12.

A cylinder fixing plate 36 is erected and fixed on the feed base 13,
An air cylinder device 37 is fixed to the cylinder fixing plate 36. The piston rod 38 of this air cylinder device 37
Is connected to the L-shaped plate 30a extended from the rubber flash removing mechanism 30, and when compressed air is sent to and discharged from the air cylinder device 37 via the compressed air source 39, the pressure regulator 40, and the flow path switching device 41. The rubber flash removing mechanism 30 comes in contact with and separates from the work rotating mechanism 20. This air cylinder device 37, compressed air source 39,
The compression adjuster 40 and the flow path switching device 41 constitute an elastic approach mechanism that gives an elastic approach force to the work rotating mechanism 20 side to the rubber flash removing mechanism 30.

In the present apparatus having the above configuration, the shaft portion 12b of the metal-rubber composite product 11 is held by the collet chuck 21 of the work rotating mechanism 20, and the drive mechanism 22 rotates the shaft portion 12b. This metal rubber composite
In the rotating state of 11, compressed air is sent to the air cylinder device 37, and the rubber flash removing mechanism 30 is advanced to the work rotating mechanism 20 side. The radial position of the flange 12a of the feed base 31 is
Adjustable by a feeding mechanism (not shown) to remove rubber flash
A rubber flash in which the bite 35 on 30 is attached to the metal base 12.
Try to hit 13a. Then, the rubber flash 13a is removed by the rubber flash removing bite 35, and the approaching force of the rubber flash removing bite 35 to the metal base 12 is elastic by the air cylinder device 37. Is not scraped. That is, the air cylinder device
The pressing force of the rubber flash removing mechanism 30 by 37 is determined in consideration of the cutting ability of the cutting tool 35 so that the cutting tool 35 does not cut the metal base 12.

The supply pressure of compressed air to the air cylinder device 37, that is, the elastic approaching force of the rubber flash removing mechanism 30 to the work rotating mechanism 20, is determined by the material of the metal base 12, the surface treatment property of the metal base 12, and the size of the rubber flash 13a. It can be adjusted according to the size. Therefore, depending on the properties of the metal-rubber composite product 11, it is possible to apply an appropriate pressing force to the cutting tool 35 that can remove only the rubber flash 13a without damaging the metal base 12.
Good results were obtained when the pressing force applied to the removal bite 35 was set between 50 g and 2 kg. This number shows an example, of course, and the shape of the metal-rubber composite product 11, the rubber flash 13
It is possible to increase or decrease the factors such as the attachment position, size, and thickness of a.

In this way, the work rotating mechanism 20 of the rubber flash removing mechanism 30 is
The elastic approaching force to the is preferably adjustable, but the elastic approaching force can also be provided by a spring. FIG. 3 shows an embodiment of the cylinder fixing plate.
The compression spring 42 is inserted between the 36 and the L-shaped plate 30a to give the rubber flash removing mechanism 30 an elastic approaching force to the work rotating mechanism 20 side. Reference numeral 42a is a spring guide column fixed to the cylinder fixing plate 36 and loosely passes through a guide hole 30b formed in the L-shaped plate 30a. In this embodiment, different elastic approaching forces can be obtained by replacing the compression spring 42.

[Advantage of Invention] As described above, according to the present invention, the rubber flash of the metal-rubber composite can be efficiently removed without damaging the metal base. Therefore, by removing the rubber flash,
There is no fear that the dimensional accuracy of the metal base will deteriorate or the surface treatment performance will deteriorate. According to claim 2, the elastic approaching force of the rubber flash removing tool can be adjusted according to the size and thickness of the metal base of the metal-rubber composite product and the rubber flash attached to the metal base. It can be widely applied to remove rubber burrs from metal-rubber composites.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a rubber flash removing device for a metal-rubber composite of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a front view of essential parts showing another embodiment of the present invention. 4A and 4B are a front view and a plan view showing an example of a metal-rubber composite and rubber burrs produced on it, and FIG. 5 is a conceptual view of a molding apparatus for molding the metal-rubber composite shown in FIGS. 4A and 4B. It is sectional drawing shown. 11 …… Metal-rubber composite product, 12 …… Metal base, 12a …… Flange, 12b …… Shaft, 13 …… Rubber material, 13a …… Rubber burr, 20 …… Work rotation mechanism, 21 …… Collet chuck ,
22 …… Drive mechanism, 30 …… Rubber flash removing mechanism, 30a …… L
Template, 31 …… Feeder, 32 …… Slide guide, 33 …… Bite holder, 34 …… Fixing bolt, 35 …… Rubber flash removing tool, 36 …… Cylinder fixing plate, 37 …… Air cylinder device, 38 ...... Piston rod, 39 ...... Compressed air source, 40 ......
Pressure regulator, 41 ...... Flow path switching device.

Claims (2)

[Scope of utility model registration request] 1. A metal-rubber composite product comprising a metal base having a rotation center and a rubber material having the same rotation center as that of the metal base bonded to a part of the metal base. A work rotating mechanism that rotates about its rotation center; a flash having a rubber flash removing tool capable of contacting a metal base portion of a metal-rubber composite product held by the work rotating mechanism, to which a rubber material should not be attached. A deburring device for a metal-rubber composite product, comprising: a removing mechanism; and an elastic approaching mechanism that applies an elastic approaching force between the work rotating mechanism and the flash removing mechanism. 2. The deburring device for a metal-rubber composite product according to claim 1, wherein the elastic approaching mechanism includes an air cylinder device and a pressure adjuster for adjusting the supply pressure to the air cylinder device.