JPH0129269Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention relates to a squeezing roll for fabric.
Used as the lower roll of a drawing device consisting of a pair of rolls.

(Prior art) As shown in FIGS. 1 and 2, as a squeeze roll, an elongated annular groove 1a is cut in the upper surface of a horizontal fixed shaft 1 along the axial direction. A leak-retaining ring 3 is fitted through an annular packing 2 having the same shape as this, and the inner surface of a hollow roll 4 rotatably fitted to the fixed shaft 1 is slidably pressed onto the upper surface of this leak-retaining ring 3. A pressure chamber 5 is formed inside the leakage prevention ring 3, and a pressure fluid is introduced into this pressure chamber 5 from the fluid introduction hole 1b formed in the fixed shaft 1, so that the upper peripheral surface of the hollow roll 4 is heated. It is known that the nip pressure between the hollow roll 4 and the upper squeezing roll (not shown) pressed against the upper surface of the hollow roll 4 is made uniform by applying pressure upward. (see publication).

The above-mentioned leakage retaining ring 3 is made in a single endless shape for narrow width squeezing rolls for ordinary fabrics, but it is made in a single endless shape for narrow width squeezing rolls for ordinary fabrics. For processing, the roll width (length in the axial direction) is about 3 to 4 m, so as shown in Fig. 8 or 9, a small leakage ring 3 of the same size is attached to the fixed shaft. Two or three pieces were installed depending on the width of the piece.

(Problem to be solved by the invention) When multiple narrow width retaining rings 3 are attached to the wide fixed shaft 1 as described above, a mold for molding the rubber leak retaining rings 3 is rolled. While there is no need to prepare a large number of pieces depending on the width, the semicircular member at the end of the leak stop ring contacts multiple locations in the intermediate portion of the inner surface of the hollow roll 4, and the intermediate roll 4 is curved, so the pressure chamber The pressurized fluid inside the leak stop ring 5 leaks to the outside from the edge of the semicircular part of the leak stop ring 3, and the pressure inside the pressure chamber 5 fluctuates, making the squeezing pressure unstable, which causes uneven processing during dyeing and resin processing. Furthermore, the pressure chamber 5 is divided in the width direction of the roll, resulting in a decrease in operational efficiency, and the machining is troublesome due to cutting out a plurality of annular grooves.

This design prevents pressurized fluid from leaking from the semicircular part of the leak-stop ring, stabilizes the throttle pressure, prevents uneven processing, prevents the pressure chamber from being divided, and makes the throttle easy to manufacture. It provides rolls.

(Means for solving the problem) In FIG. 1, the leakage retaining ring 3 is connected to a pair of left and right semicircular members 3A located at both ends in the roll axis direction.
and a pair of front and rear linear members 3 parallel to the roller axis direction.
An endless annular sliding plate 6 (see FIG. 3) made of a metal plate is fixed to the outer periphery of the leakage retaining ring 3.

(Function) When an upper squeeze roll (not shown) is pressed against the upper surface of the hollow roll 4 and the fixed shaft 1 is fixed horizontally and the hollow roll 4 is slid, a gap is created between the upper squeeze roll and the hollow roll 4. The supplied fabric is squeezed by the nip pressure of both rolls. In this case, since the leakage retaining ring 3 is formed into a single endless piece spanning almost the entire width of the fixed shaft 1, the pressure chamber 5 is formed into one piece without being divided. Further, the upper edge of the linear member 3B of the leak stop ring 3 comes into contact with the middle part of the inner surface of the hollow roll 4, and the contact position is shifted back and forth from the top of the hollow roll 4. and,
The leakage retaining ring 3 is pressed outward by the pressure within the pressure chamber 5, and the annular sliding plate 6 on the outer surface of the leakage retaining ring 3 is pressed against the groove wall of the annular groove 1a of the fixed shaft 1.
In this state, the upper surface of the leakage ring 3 contacts the inner surface of the hollow roll 4 and slides up and down, and the annular sliding plate 6 protects the outer surface of the leakage ring 3 and prevents its wear.

(Example) In FIGS. 4 and 5, a pair of left and right semicircular members 3A, 3A and a pair of front and rear linear members 3
B and 3B were manufactured by vulcanization molding of synthetic rubber, and their ends were abutted and bonded to form one endless leak-retaining ring 3. However, straight member 3
B was used by cutting a long molded product into the required length. Similarly, the annular packing 2 is assembled into a pair of left and right semicircular members 2A, 2A made of synthetic rubber and a front and rear member 1, as shown in FIGS. 6 and 7.
It was formed by adhering a pair of straight members 2B, 2B.
As shown in FIG. 3, the annular packing 2 has a trapezoidal cross section with a triangular groove 2a on the lower surface. In addition, a leakage retaining ring 3 is stacked on the top surface of the ring.
has a lip 3a on the inner side of the tip (the side facing the pressure chamber 5) and a recess 3b on the lower side, extending all around the circumference, and has an endless annular sliding plate 6 made of a metal plate on the opposite outer surface. is fixed. The leak retaining ring 3 of this embodiment has a lip 3a and a recess 3b.
Since the lip 3a follows the curvature of the hollow roll 4 and comes into close contact with the inner surface thereof, leakage of pressure fluid is further prevented.

(Effects of the invention) Since this invention forms the leakage retaining ring by adhering a pair of left and right semicircular members and a pair of front and rear linear members, the mold for the semicircular member can be used regardless of the length of the roller width. By preparing two types of molds, one for straight members and the other for straight members, a leakage retaining ring of any size can be obtained. Furthermore, since one leakage retaining ring is attached to one fixed shaft, only one annular groove is required to be cut into the fixed shaft, and the work is easy. In addition, since one long leak-stop ring is installed, there is only one pressure chamber, and the efficiency of operation does not decrease as in the case of multiple pressure chambers, and the linear member of the leak-stop ring is installed in the center of the hollow roll. Since they are in contact with each other, there is little liquid leakage even if the hollow roll is curved, so there is no pressure fluctuation in the pressure chamber, the squeezing pressure is kept uniform, and uneven processing does not occur. and,
If the annular packing is similarly formed by bonding a semicircular member and a wire member, manufacturing becomes easier.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of this invention, Fig. 2 is a cross-sectional view thereof, Fig. 3 is an enlarged cross-sectional view of the leak-retaining ring, Fig. 4 is a plan view of the leak-retaining ring, and Fig. 5 is a cross-sectional view of the embodiment. Fourth
Fig. 6 is a plan view of the annular packing, Fig. 7 is a sectional view taken along the - line in Fig. 6, Fig.
9 and 9 are plan views of a conventional fixed shaft. DESCRIPTION OF SYMBOLS 1... fixed shaft, 1a... annular groove, 2... annular packing, 3... leakage retaining ring, 3A... semicircular member, 3B... linear member, 4... hollow roll, 5...
...Pressure chamber, 6...Annular sliding plate.

Claims (1)

[Claims for Utility Model Registration] [1] An elongated annular groove is cut along the axial direction on the upper surface of the horizontal fixed shaft, and a leak-retaining ring is attached to this annular groove through an annular packing of the same shape. The inner surface of a hollow roll rotatably fitted to the fixed shaft is slidably pressed onto the upper surface of this leakage prevention ring to form a pressure chamber inside the leakage prevention ring. In a fabric squeezing roll into which a pressurized fluid is introduced, the above-mentioned leakage retaining ring is attached to the left and right one located at both ends in the axial direction of the roller.
It is formed by adhering a pair of semicircular members and a pair of front and rear linear members parallel to the roller axis direction, and an endless annular sliding plate made of a metal plate is fixed to the outer periphery of the leakage retaining ring. A squeeze roll of the fabric. [2] The fabric squeezing roll according to claim 1 of the patented utility model registration, wherein the annular packing is comprised of a semicircular member attached to the semicircular member of the leakage retaining ring, and a linear member attached to the linear member of the leakage retaining ring. .