JPH0718534Y2 - Device for fitting packing to valve plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for fitting a packing to a valve plug.

(Prior Art) Conventionally, according to Japanese Utility Model Laid-Open No. 57-181572, a mounted ring made of an elastic material is mounted in an integrated groove formed near the end of a mounting target member having a substantially columnar shape. In doing so, a slide jig consisting of a thin-walled cylindrical fitting portion and a base portion having a tapered peripheral surface is fitted into the end portion of the mounting target member, and then made of a synthetic resin material having a high elasticity, etc. One end surface of the pushing jig with a slit running in the axial direction is brought into contact with the ring to be mounted, and the other end is pressed, and the taper peripheral surface of the slide jig causes the ring to be mounted and the pushing jig. A ring mounting jig of the type in which the ring to be mounted is moved to a predetermined position while being expanded and fitted into the integrated groove is disclosed. With a disc part A guide shaft erected from the center of the disk portion, a cylinder pressing portion for press-fitting an oil seal guided forward and backward by the guide shaft, and a cylinder rotatably screwed to the rear end of the guide shaft. A rotating socket for advancing the pressing portion, a guide cylinder that accommodates the cylindrical pressing portion so as to guide the cylindrical pressing portion, and a cylindrical pressing portion interposed between the cylinder and the cylindrical pressing portion are urged rearward. An oil seal press-fitting jig of a type including a spring is disclosed.

(Problems to be Solved by the Invention) Although the former described in the above-mentioned conventional technique is suitable when the integrated groove (corresponding to the packing groove 27 in the invention of the present application) is opened directly to the side, If the packing groove 27 is of a dovetail type and is opened in an oblique direction as in the present invention, it is not preferable because blistering may occur or the packing may be easily scratched by the blistering. If the dovetail is a dovetail type and the packing groove is a dovetail type, it cannot be used because it cannot be completely inserted by only the force of shrinking the packing diameter.

Further, even if the moving mechanism of the pushing jig in the latter is adopted and added to the former in order to obtain the pushing force, the above-mentioned defect of the former cannot be solved.

An object of the present invention is to provide a packing fitting device for a new valve plug that eliminates the above-mentioned defects.

(Means for Solving the Problems) In order to achieve the above object, a packing fitting device for a valve plug according to the present invention is provided with respect to a valve plug 23 having a dovetail-type packing groove 27 that opens obliquely. Ant tenon type packing
It is used to fit 19 and the inner diameter of the upper half is made large and the inner diameter of the lower half is made small to make the step 1
Also, a cylindrical jig body 4 provided with a pair of fitting slits 2 and 2'on both sides of the lower half and detachably attached with a screw lid 3 in the upper opening, and the outer diameter of the upper portion is a jig. The inner diameter of the upper half of the main body 4 should be the same and the outer diameter of the lower part should be the same.
A packing pushing tool 6 having an upright truncated cone-shaped recess 5 on the lower surface which is the same as the inner diameter of the lower half, a packing guide tool 7 having an upright truncated cone shape on the outer periphery, and a U-shape. Receiver 8
And a packing leveling tool 10 having a taper surface 9 whose lower end edge surface is inclined downward, and a screw hole 12 is formed in the center of the screw lid 3 of the jig body 4 to A screw rod 13 for screwing up and down, a wrench 16 provided at an upper end portion 14 of the screw rod 13, and a bearing 17 provided so that the lower end of the screw rod 13 rotatably abuts at the center of the upper surface of the packing pushing tool 6. , A pointed push-in portion 18 provided on the lower edge of the packing push-in tool 6 as a taper surface that inclines upward toward the lower end of the packing push-in tool 6, and an inner peripheral surface of the push-in tip 18 Packed around 19
A part of the recess groove 20 for escape and an air bleeding tool 28 are provided.

(Embodiment) and (Operation) An embodiment of the present invention will be described with reference to the drawings. First, the inner diameter of the upper half is increased and the inner diameter of the lower half is decreased, and the step portion 1 is attached to the middle inner circumference. A pair of fitting slits 2 and 2'are provided on both sides of the lower half, and a screw lid 3 is provided on the upper opening.
And the outer diameter of the upper part is the same as the inner diameter of the upper half of the jig body 4, and the outer diameter of the lower part is the inner diameter of the lower half of the jig body 4. A packing pushing tool 6 having an upright truncated cone-shaped recess 5 on the same lower surface,
A packing guide 7 having an upright truncated cone shape on the outer periphery, a receiving tool 8 having a U-shape, and a packing leveling tool 10 having a taper surface 9 inclined downward with its lower end edge surface outwardly configured. Then, a screw hole 12 is formed at the center of the screw lid 3 of the jig body 4, and a screw rod 13 for raising and lowering is screwed into the screw hole 12, and the screw rod 13
The upper end 14 of the
One wrench 16 to be used by replacing it with one of 15 is attached, and the lower end of the screw rod 13 is rotatably abutted on the center of the upper surface of the packing pressing tool 6 via a bearing 17, and the packing pressing tool 6 is The lower edge of the packing pushing tool 6 is made into a sharp pushing tip portion 18 as a taper surface which is inclined upwards outward, and a part of the packing 19 is provided on the inner peripheral surface of the pushing tip portion 18. A jig set (21) is constructed by surrounding the recessed groove (20) for enclosing.

Then, the jig set 21 is used by the following procedure so that the packing 19 is fitted into the valve plug 23.

Clamp the receiver 8 in the vise 25. (See FIG. 2) After inserting the valve rod 26 into the jig body 4, the jig body 4 is attached to the receiving tool 8 using the fitting slits 2 and 2 '.
(See FIG. 3) Vaseline is applied to the packing 19 and the packing 19 is fitted into the packing guide tool 7, and then the packing guide tool 7 is placed on the valve plug 23 in the jig body 4. (See FIG. 4) The packing pushing tool 6 is put into the jig body 4, and the screw lid 3 is screwed to the jig body 4. (Figs. 5 and 6
(Refer to the drawing) By rotating the wrench 16 attached to the upper end of the screw rod 13 and lowering the packing pushing tool 6, the packing 19 is pushed down and the packing 19 is fitted into the packing groove 27. (See FIG. 7) After removing the screw lid 3, the packing pushing tool 6, the packing guide tool 7, and the valve rod 26 are removed in this order.

After removing the air, the air remaining under the packing 19 fitted into the valve plug 23 of the valve rod 26 is removed by an air removing tool.
Eject by 28. (See FIG. 8) After bleeding air, the valve rod 26 is put into the jig body 4 again, and then the packing leveling tool 10 is placed on the valve plug 23. (9th
(Refer to the figure) Carry out the packing 19 in the same way as.

After removing the screw lid 3, the packing pushing tool 6, the packing leveling tool 10, and the valve rod 26 are removed in this order, and the process is completed.

The fitting device according to the present invention, as shown in FIGS. 10 and 11, has a small-diameter packing pushing tool in the case of a small-diameter valve plug 30.
31, packing guide tool 32, valve plug guide 33 and packing leveling tool 34 are prepared separately, and as shown in FIGS. 12 and 13, in the case of the asept type valve plug 35, the asept part does not collapse. For this purpose, the support frame 37 with the height adjusting screw 36 is provided separately on the lower side for the purpose of implementation.

In the figure, reference numerals 39, 40 and 41 indicate insertion holes of the valve rod, and the insertion holes 39, 40 and 41 enable the usage as shown in FIGS. 14 and 15.

(Effects of the Invention) Since the present invention has the above-described structure, if it is used as described in the above operation, the packing 19 is strongly pushed by the pressing point portion 18 as is apparent from FIG. 27, and at the time of this pushing, part of the deformed packing 19 is
After it escapes, it fits into the packing groove 27, and does not damage the packing 19 or scratch the packing 19, and does not greatly damage the valve plug 23 with the dovetail-type packing groove 27 that opens diagonally. The tenon-type packing 19 can be fitted, and as described above, the air-bleeding tool 28 and the packing leveling tool 10 can be used to fit in a uniform state in which no air remains.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a packing fitting device for a valve plug according to the present invention, FIGS. 2 to 9 are explanatory views of a procedure of use, and FIGS. 10 and 11 are valve plugs having a small diameter. Fig. 12 is a cross-sectional view showing a jig used in Fig. 12, Fig. 12 and Fig. 13 are usage diagrams of the receptacle used for the aseptic valve plug, and Figs. 14 and 15 are usage diagrams of insertion holes, Fig. 16 [Fig. 6] is a state diagram of the packing being inserted into the groove. DESCRIPTION OF SYMBOLS 1 ... Stepped portion, 2 2 '... Slit for fitting, 3 ... Screw lid, 4
... jig body, 5 ... recess, 6 ... packing pushing tool, 7 ... packing guide tool, 8 ... receiving tool, 9 ... taper surface, 10 ... packing leveling tool, 12 ... screw hole, 13 ... lifting screw rod , 14 ... upper end part, 15 ... screw hole, 16 ... wrench, 17 ... bearing, 18 ... pushing tip part, 19 ... packing, 20 ... recessing groove, 21 ... jig set, 23 ... valve plug, 25 … Vise, 26… valve stick, 27… packing groove,
28 ... Pulling tool, 30 ... Valve plug guide, 31 ... Packing pusher,
32 ... Packing guide, 33 ... Valve stopper guide, 35 ... Valve stopper, 36 ...
Height adjustment screws, 37 ... Support frame, 39, 40, 41 ... Insertion holes.

Claims (1)

[Scope of utility model registration request] 1. A dovetail mortise type packing groove that opens obliquely
It is used to fit the dovetail-type packing 19 to the valve plug 23 provided with 27. The inner diameter of the upper half is increased and the inner diameter of the lower half is decreased, and the step portion 1 is formed in the middle inner circumference. Further, a cylindrical jig body 4 is provided with a pair of fitting slits 2 and 2'on both sides of the lower half, and a screw lid 3 is detachably attached to the upper opening, and the outer diameter of the upper portion is set to the jig body. 4 is the same as the inner diameter of the upper half of 4 and the outer diameter of the lower part is the same as the inner diameter of the lower half of the jig body 4, and a packing pushing tool 6 having a recess 5 of an upright truncated cone shape on the lower surface, A packing guide 7 having an upright truncated cone shape on the outer periphery, a receiving tool 8 having a U-shape, and a packing leveling tool 10 having a tapered surface 9 whose lower end edge surface is inclined downward toward the outside. A screw hole 12 is formed in the center of the screw lid 3 of the jig body 4.
And a threaded rod 13 for raising and lowering which is screwed into the screw hole 12,
The wrench 16 provided on the upper end 14 of the screw rod 13, the bearing 17 provided so that the lower end of the screw rod 13 rotatably abuts on the center of the upper surface of the packing pushing tool 6, and the lower end edge surface of the packing pushing tool 6. Push-in tip portion 18 provided on the lower edge of the packing push-in tool 6 as a taper surface which is inclined upward toward the outside.
An apparatus for fitting a packing to a valve plug, comprising: a recess groove 20 for escape, which is a part of a packing 19, which is provided around the inner peripheral surface of the pushing point portion 18; and an air bleeding tool 28.