JPS5856660B2 - Magari kanagu oho - Sunohashini crimp suru souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for crimping fittings to the end of a hose, and more particularly to such a device adapted to be actuated by a fluid pressure device.

In an improved form of crimping apparatus disclosed in U.S. Pat. No. 3,335,594 to R.J. Apparatus is provided for crimping the fitting radially inwardly onto the end of the hose.

Other patents include Patent No. 3096876 by Scudjeri and Albrecht (
A crimp device is also disclosed in U.S. Pat.

A problem with such crimping devices of the prior art is that the insertion of hardware elements and the like beneath the support (holder) of the crimp die is hindered by various parts of the force-applying elements of the device.

Thus, for example, in the Schudy patent, the pressure member extends between the fitting and the pressure plate and includes a side recess into which a fitting, such as an elbow fitting, can be inserted.

Also, in the Albrecht patent, multiple cylinders are arranged without a central gap, thus presenting the problems of the prior art described above.

The present invention provides an improved crimping device which is extremely simple and economical in construction and eliminates the above-mentioned drawbacks.

More particularly, in the present invention, a pair of hydraulic cylinders are spaced apart from each other and stand upright from a base, defining a space therebetween for receiving a hanging portion of a fitting arranged to be crimped by a die element of the apparatus. do.

the die element is supported on a support disposed above the space, and the ram is supported at the upper end of the propulsion mechanism drive;
The die can be selectively pushed inwardly so that the crimping operation can be carried out with the depending portion of the fitting freely extending downwardly into the space from the radially inward side of the die.

The invention further includes a die support having a central opening vertically disposed therethrough for attaching and detaching the die as needed.

Additionally, the present invention provides a crimping apparatus with improved means for reducing friction between the die and the camming surface of the ram to facilitate the crimping operation.

In particular, the present invention provides a device movable therewith to lubricate the cam surface during cam operation.

The lubricating system includes a fitting mounted to the ram and a conduit arrangement that conveys lubricant from the fitting, through the ram, and onto the cam surface.

Lubrication is further improved when a plurality of such fittings and conduit arrangements are provided.

Other features and advantages of the invention will become apparent from the following description with reference to the accompanying drawings.

A representative embodiment of the invention is shown in the drawings, in which a device 10 is shown.
includes a plurality of dies 11 arranged to crimp a fitting 12 to a hose end 13.

The die 11 is radially movably attached to the die holder 14 through a slot 43 and has an arcuate inner surface 15 disposed concentrically about the vertical centerline 16 of the device as shown in FIG. ing.

The ram 17 is supported by the upper ends 18 of piston members of a pair of hydraulic cylinders 19.

The ram has an axial bore 20 in which is mounted a cam arrangement 36 defining a frusto-conical cam surface 21 adapted to engage the die 11 when the ram is raised into position around the die holder 140. It is.

The die holder 14 is attached to a top support plate 22 fixed to the upper ends of four columns 23 that vertically penetrate the ram 17 with a plurality of bolts 24 screwed into the threaded upper ends of the columns. There is.

Further, the die holder 14 is fixed to the support plate 22 using a plurality of holding screws 25.

The threaded lower end of each post 23 is provided with a nut 26, which constitutes a mounting leg below the base plate 27 of the device.

As shown in FIG. 1.3, the hydraulic cylinder 19 is attached to screws 28 with a space between them on both sides of the center line 160 of the device.
It is secured to the top of the base plate 27 by a suitable device such as.

Thus, the two cylinders 19 define a space 29 between them in which the lower end of the metal fitting 12 is accommodated under the ram 17.

In this embodiment, the metal fitting 12 is an elbow metal fitting that projects forward through the space 29 without being interfered with by any part of the device.

Upon selective movement of the piston 18, the hydraulic cylinder 1
9 can be operated at the same time, a manifold 30 for simultaneously supplying hydraulic fluid to the hydraulic cylinders 19 is preferably provided on the base plate 27 at the lower rear of the space 29.

The bore 20 of the ram 17 is substantially larger than the cross-section of the space 29, as shown in FIG.

This provides more clearance under the die holder 14 to the fitting 12.

As shown in FIG. 1, struts 23 freely pass through ram 17 between top support plate 22 and base plate 27. As shown in FIG.

The spacing between the left and right columns 23 is wider than the spacing between the cylinders 19, as seen in FIGS. 1 and 3, thereby reducing the space 2.
9 is wider above the base plate 27 and manifold 30 both in front and rear.

Therefore, in order to place a crimpable portion of a fitting, such as an elbow fitting, into the interior space 31 of the die surface 15, it is necessary to move it into the space 2.
Not only can it be inserted freely into the space 29, but also an extension from the fitting extending outward from the fitting, such as a hose connection, can be inserted through the space 29 at the front or rear of the cylinder.

The space 29 extends completely downward from the die holder 14 to the top of the base plate 27 at the axis 16, and extends completely downward from the ram 17 in front and behind thereof.

The bottom of the ram substantially matches the top of cylinder 190 in its lowest position as shown in FIG.

Easy insertion of different bends and extensions is thus facilitated by the space 29, thus facilitating the use of the crimping device.

To control the crimp action of fittings using conventional methods,
A gauge device 32 may be provided to direct the radial movement of the die.

This gage device includes a scale, a gage screw, and a gage pin.

When working, set the gauge screw at the specified number on the scale to determine a visible stopping point.

By observing the relative movement of the gauge pin to the gauge screw, the movement of the crimping device can be controlled.

That is, a correct crimp is achieved by the operator continuing to operate the crimping device until the gauge pin reaches a preset gauge thread level.

As is clear from its construction and the advantages mentioned above, the device of the invention forms a space for receiving different fittings and their extensions, allowing the device to be easily used with a variety of fittings. The principle of crimping, in which the fitting is crimped onto the end of the hose, is the same as in conventional devices.

When selecting the bose and coupling to be assembled and performing the crimp operation, insert the die into the die slot,
Set the gauge device to the desired scale position for the correct crimp size.

The coupling and hose are placed in the crimping device and the device is activated.

The die is moved inwardly toward the coupling and hose, thereby crimping the coupling to the hose.

The crimper must ensure that the gauge pin is in the correct position (coplanar with the top of the screw) relative to the preset gauge screw.
Continue working until you reach , stop at this position, and your work is complete.

In order to make the crimp operation even easier, it has been found that it is advantageous to provide a device for lubricating the cam surface 21 in order to reduce the frictional contact with the crimp die.

For this purpose, a plurality of grease cups 33 are mounted on the ram 17.

The ram extends from the cup 33 into the annular groove 35 and the ram 17
an annular ring 36 that is fixed to the cam surface 21 and forms the cam surface 21;
A passageway 84 is provided that opens radially inward toward.

As shown in FIG. 2, the ring 36 includes a plurality of grease plugs 37 that are in line with the respective dies 11 and communicate between the grooves 35 and the cam surface 21.

The grease plug 37 is pressed against the outer surface 38 of the die with a suitable spring-loading device 39 held in a hole 40 in the ram 17 by a suitable spacer 41 and set screw 42.

Thus, the grease is transferred from the grease cup 33 to the annular groove 3.
5, the grease is uniformly fed from the annular groove 35 to the outer surface of the die via the gel lugs 37 to lubricate the outer surface of the die during the crimping operation, thereby minimizing friction and wear between the cam surface 21 and the die 110 and improving the crimping process. Facilitate operation.

The die can be inserted into the slot 43 of the holder 14 through the axial opening 31, as shown in FIG.

The top support plate 22 has a long diameter axial aperture 44 that allows the die to be moved vertically through the aperture 44 without having to remove either the top support plate 22 or the holder 14 from the apparatus;
This facilitates the replacement of dies in the holder 14.

Thus, the present invention facilitates the insertion and removal of flexures and the like, whereas conventional crimping devices usually have the serious problem of preventing the free insertion and removal of flexures and similar attachments. An improved crimping device is provided.

Additionally, the present invention provides improved cooperation between the pressure application device and the die by minimizing friction between the pressure application device and the die using an improved lubrication system;
Facilitates clinging operations.

The foregoing disclosure has been made regarding specific illustrative examples of the broader concept of the invention.

[Brief explanation of drawings]

1 is a perspective view of a crimping device according to the invention, FIG. 2 is an enlarged plan view thereof, FIG. 3 is an enlarged partially exploded front elevational view thereof, and FIG. 4 is a holder, die and slot. FIG. 3 is a partial cross-sectional view showing the relationship. Crimp device...10, Base...27, Die...
・11゜Metal fitting...12, Die holder...14, Ram...17, Hose end...13, Support device...2
3. Propulsion mechanism...19. Space...29°

Claims (1)

[Claims] 1. A base, a plurality of crimp dies, a support body including a die holder that supports the dies so as to be movable inwardly toward the metal fitting, and a cam that engages with the dies to push the dies inwardly. an apparatus for crimping a fitting to a hose end, the device comprising: a ram defining a surface; a plurality of upright posts extending from the base through the ram for fixedly supporting the support above the ram; a pair of hydraulic cylinders mounted on the base having piston members for selectively forcing the support toward the support and engaging the camming surface with the die, the cylinders and upright struts being in the way; A crimping device that creates an empty gap. 2. The method according to claim 1, further comprising a device for introducing lubricant to the cam surface through the holder to reduce the frictional force between the cam surface and the die. Crimp device. 3. A crimping apparatus according to claim 1, wherein the holder defines a vertical central opening, and the die can be attached to and removed from the holder by vertically moving the die through the opening.