JPH0218840Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a wet multi-plate clutch device that is most suitable for press machines.

[Prior Art] In general, this type of wet type multi-disc clutch device is known, for example, as described in Japanese Utility Model Publication No. 53-20782. This device is still widely used today because it has the following advantages over dry multi-plate clutches.

For example, in oil, the heat dissipation from the friction plates is good, so it is possible to easily secure the number of friction plates required for the press capacity.

Furthermore, the friction plates made of sintered alloy used in wet multi-plate clutches have an extremely low amount of friction, about 1/1600, compared to asbestos-based friction plates often used in dry multi-disc clutches. . Therefore,
In the case of a wet type, there is no need to adjust the clutch or brake clearance for a long period of time.

In addition, in order to remove small amounts of fine powder generated on the friction surface, the friction plate is rotated in oil, and the friction surface is also threaded with threaded grooves, so the centrifugal force of the oil is constantly applied to the grooves. shall be passed through and its removal shall be complete.

In addition, the coefficient of friction of the friction plate in oil is almost constant, so variations during braking are extremely small.

These are the characteristics of the wet multi-plate clutch.

[Problem that the invention attempts to solve]

In such a conventional wet multi-plate clutch device,
The lubricating oil supplied to each clutch part is splashed from the chamber chamber formed in the clutch housing, which makes it difficult to ensure reliable lubrication, and there is no device to secure the chamber chamber. There were problems such as increasing the size.

Therefore, the purpose of this invention is to provide reliable lubrication and to achieve a compact size.
Another purpose is to improve the ease of assembly.

[Means for solving problems]

In order to achieve the above-mentioned objects, this invention is equipped with a clutch mechanism that transmits the power of the drive pulley to the output shaft of the press machine, and a brake mechanism that brakes the output shaft. A wet multi-disc clutch device in which the off operation and the off/on operation of the brake mechanism are linked,
A brake mechanism is provided at the base side of the protruding end of the output shaft rotatably supported by the casing of the clutch device, a clutch mechanism is provided within the drive pulley rotatably supported by the protruding end, and the clutch mechanism A cylinder housing slidably equipped with a clutch pressing body that presses the clutch plate is fixed to the outer surface of the drive pulley, and a lubricating oil path for supplying lubricating oil to the brake mechanism and clutch mechanism is connected to the output shaft. A rotary seal body is attached to the cylinder housing, which is formed from the end face of the protruding end on the shaft center, and is configured to supply working fluid to the cylinder housing and to supply lubricating oil from the end face to the lubricating oil passage. It is.

〔Example〕

Hereinafter, a preferred embodiment of this invention will be described based on the accompanying drawings.

FIG. 1 shows a schematic side view of a press machine 3 equipped with a wet multi-plate clutch device 1 according to the invention. In the press machine 3, a C-shaped frame 5 is tiltably supported on a pedestal 9 by an adjustment mechanism 7.

An eccentric shaft 11 is rotatably attached to the C-shaped frame 5, and a ram 1 is attached to the eccentric shaft 11.
Connecting rod 1 whose lower end is pivotally connected to 3
The upper part of No. 5 is fitted. Therefore, the eccentric shaft 11
By rotating the ram 13, the ram 13 is raised and lowered via the connecting 15.

A drive unit 17 is removably attached to the back side of the C-shaped frame 5 via a plurality of positioning pins, bolts, etc. (not shown).

A clutch/brake unit 19 and a power take-off unit 21 are removably attached to the casing of the drive unit 17.

An output shaft 25 is rotatably supported within a casing 22 of the clutch/brake unit 19 via a plurality of radial bearings 23. Output shaft 2
A brake mechanism 27 and a clutch mechanism 29 are attached to the protruding end (free end) of 5 protruding from the casing 22, and the clutch mechanism 29 is housed inside the drive pulley 31. A belt 35 from a drive motor 33 mounted on the C-shaped frame 5 shown in FIG. 1 is wound around the drive pulley 31. As shown in FIG.

The clutch mechanism 29 is composed of a plurality of hollow clutch plates 33 and a plurality of hollow friction plates 35 arranged between the clutch plates 33 so as to overlap each other alternately. The clutch plate 33 is
It is supported by actuation pressing means 37, which will be described later. Further, the friction plate 37 is fitted into a spline portion 39 on the output shaft 25 side, and the power of the drive pulley 31 is transmitted to the output shaft 25 by the pressure contact between the clutch plate 33 and the friction plate 35.

The brake mechanism 27 includes a plurality of hollow brake plates 41
and a plurality of hollow friction plates 43 arranged alternately overlapping each other between the brake plates 41.
is supported by. The friction plate 43 is the output shaft 2
The output shaft 25 is spline-fitted to the spline portion 47 on the 5 side, and the braking action is applied to the output shaft 25 by pressing the braking plate 41 and the friction plate 43 together.

The actuation pressing means 37 consists of first and second actuation members 37a and 37b arranged on the same axis and a bearing portion 37c serving as a rolling bearing, and the first and second actuation members 37a and 37b are arranged on the same axis. 37c for relative rotation. The actuation pressing means 37 thus constructed is arranged at four locations, and two of the four locations have the same structure as shown in FIG. 2. One first actuating member 37 located on the upper side in FIG.
A is supported by a cylinder housing 55 which passes through the clutch plate 33 and the flange 53 of the clutch pressing body 51 and is fixed to the drive pulley 31. The second actuating member 37b passes through the brake plate 41 and the brake pressing body 57, and is supported by the worm gear 59 that is spline-fitted with the casing 22. The worm gear 59 meshes with a worm gear 59a transmitted by a motor (not shown), and the output shaft 25 can be rotated by the power from the worm 59a.

In addition, the actuation pressing means 3 disposed on the lower side in the figure
Of the seven first and second operating members 37a and 37b, one operating member 37a is coupled to the flange 53 of the clutch pressing body 51, and the other second operating member 37b is connected to the flange 53 of the clutch pressing body 51.
is coupled to the brake pressing body 57. The brake pressing body 57 is biased by a biasing spring 61,
The brake plate 41 and the friction plate 43 are in a pressed state and a braking action is activated.

The first and second actuating members 37a and 37b are connected to each other by a bearing portion 37c so as to be relatively rotatable.

On the other hand, the clutch pressing body 51 is provided in a cylinder housing 55 having a desired pressure receiving area and fixed to the drive pulley 31. A cylinder chamber 63 is provided between the cylinder housing 55 and the clutch pressing body 51 and is supplied with operating pressure fluid. Further, a lubricating oil passage 71 that continues to the clutch mechanism 29 and the brake mechanism 27 is formed in the output shaft 25 from the end surface at the axial center, and the oil passage 71 and the cylinder chamber 63
is connected and communicated with a lubricating oil guide path 73 and an operating pressure supply/discharge path 65 formed in the rotary seal body 49 .

The rotary seal body 49 is connected to the operating supply/discharge path 6
5 and a second supply port 69 that leads to the lubricating oil guide path 73, and has a unit structure in which the flange portion 75 is detachably attached to the cylinder housing 55 with fixing bolts 77. ing.

The first supply port 67 is connected to a working pressure fluid supply source (not shown), and the second supply port 69 is connected to a lubricating oil supply source (not shown), and each supply port 67 and 69 is rotated by a bearing 66. It is now possible to move. Note that compressed air or hydraulic pressure is used as the working pressure fluid, for example. Further, a gear (not shown) is attached to the tip of the output shaft 25 (left side in FIG. 2), and this gear is used when the clutch/brake unit 17 is assembled with the drive unit.
It comes to mesh with a gear (not shown) on the unit side.

In the clutch device configured in this way,
First, as shown in FIG. 2, when the clutch mechanism 29 is turned on from a state where the clutch plate 33 is off and the brake mechanism 27 is on, a working pressure fluid of a certain pressure or higher is supplied from the working fluid supply source (not shown). (compression pressure of the spring 61 or higher) is introduced into the cylinder chamber 63 from the first supply port 67 via the lubricating oil supply/discharge path 65. The working pressure fluid at a predetermined pressure introduced into the cylinder chamber 63 presses the clutch pressing body 51 to the left in FIG.

When the clutch pressing body 51 is pressed leftward in FIG.
1 and the friction plate 43, that is, the state in which the brake is applied is released. On the other hand, clutch plate 3
3 and the friction plate 35 are pressed together and turned on, and the power of the drive pulley 31 is transmitted to the output shaft 25.
On the other hand, when the pressure of the clutch pressing body 51 is released, the clutch plate 33 and the friction plate 35 are separated. At the same time, the braking plate 41 and the friction plate 43 are brought into contact with each other by the biasing spring 61, so that the brake is applied to the output shaft 25. In this case, lubricating oil is directly supplied to the clutch mechanism 29 and the brake mechanism 27 from the lubricating oil passage 71 by centrifugal force, so that the brake plate 41 and the friction plate 43
Also, the clutch plate 33 and the friction plate 35 can function stably for a long time. Further, by mounting the rotary seal body 49 on the cylinder housing 55, the first supply port 67 and the second supply port 69 are connected and communicated with the lubricating oil passage 71 and the cylinder chamber 63, respectively.

[Effect of idea]

As can be understood from the above description of the embodiments, the gist of the present invention is as stated in the claims of the utility model registration, and as is clear from the description, in the present invention, the brake mechanism 27 The clutch mechanism 29 is attached to the protruding end of the output shaft 25.
is a drive pulley 3 rotatably supported on the protruding end.
It is provided inside 1. Therefore, according to the present invention, the length of the protruding end of the output shaft 25 can be shortened, the moment acting on the bearing portion can be reduced, and the overall configuration can be downsized.

Further, in the present invention, since the lubricating oil passage 71 for supplying lubricating oil to the brake mechanism 27 and the clutch mechanism 29 is formed axially from the end surface of the protruding end of the output shaft 25, it is difficult to process the lubricating oil passage 71. In addition, the lubricating oil supplied from the end face can be easily supplied to the brake mechanism 27 and the clutch mechanism 29 by the centrifugal force caused by the rotation of the output shaft 25.

[Brief explanation of drawings]

Figure 1 is a side view of the press mechanism implemented with this invention, Figure 2 is a cross-sectional view of the wet multi-plate clutch device,
FIG. 3 is a sectional view of the rotary seal body. Explanation of main drawing symbols, 25...Output shaft, 27
... Brake mechanism, 29 ... Clutch mechanism, 31
... Drive pulley, 37 ... Operation pressing means, 49 ...
...Rotary seal body, 51...Clutch pressing body, 55...Cylinder housing, 57...Brake pressing body, 61...Biasing means, 63...Cylinder chamber, 67...First supply port, 65...Operation Pressure supply and discharge passage, 69...Second supply port, 71...Lubricating oil passage, 7
3...Lubricating oil guideway.

Claims (1)

[Scope of utility model registration request] It is equipped with a clutch mechanism 29 that transmits the power of the drive pulley 31 to the output shaft 25 of the press machine 3 and a brake mechanism 27 that brakes the output shaft 25. The wet type multi-disc clutch device is of a type in which off-on operations are linked, and a brake mechanism 27 is provided at the base side of the protruding end of the output shaft 25 rotatably supported by the casing 22 of the clutch device.
A cylinder housing 55 is provided with a clutch mechanism 29 in the drive pulley 31 which is rotatably supported at the projecting end, and is slidably provided with a clutch pressing body 51 that presses the clutch plate 33 of the clutch mechanism 29. a lubricating oil passage 71 which is fixedly provided on the outer surface of the drive pulley 31 and supplies lubricating oil to the brake mechanism 27 and the clutch mechanism 29.
A rotary seal body 49 is provided at the axial center of the output shaft 25 from the end face of the protruding end, and is for supplying working fluid to the cylinder housing 55 and supplying lubricating oil from the end face to the lubricating oil passage 71. A wet type multi-disc clutch device characterized in that it is attached to a cylinder housing 55.