JPH0318558Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a sliding shower used for washing paper-making nets and felt, and in particular, to a sliding shower that is slidably connected to a screw shaft that is a driving device of the sliding shower. This invention relates to a screw guide that transmits motion to a pipe and causes it to reciprocate.

Prior Art A screw shaft is often used as a drive device for reciprocating a shower pipe installed in the width direction of paper mesh or felt.

The screw shaft is rotationally driven by a motor.
The rotary motion is converted into a reciprocating sliding motion of the shower pipe via a screw guide that is slidably fitted in a reciprocating spiral groove of the screw shaft.

Further, the screw guide that slides into the reciprocating spiral groove of the screw shaft is made of an integrally machined metal product, and has a sliding portion having a top surface shape and a length that approximately match the curvature of the spiral groove, Built-in replaceable to prevent wear.

Problems to be Solved by the Invention However, the above-mentioned screw guide is constantly in sliding contact with the reciprocating spiral groove of the screw shaft, moves reciprocatingly along the spiral groove, and weighs several hundred kg (for example, 500 kg or 800 kg).
Kg) shower pipes are subjected to severe usage conditions where they are subjected to the greatest load and friction, and the contact area of the reciprocating spiral groove over the entire stroke and the contact area of the sliding part of the screw guide are different from each other. number of
The screw guide, especially the sliding part, is severely worn and damaged, forcing early replacement. In addition, when replacing them, operation is forced to stop, and improvement of this problem has become an issue.

In addition, conventional screw guides are made of a single piece of metal, and the curvature of the sliding part does not suit screw shafts of different diameters, resulting in incompatibility and requiring separate screws for different screw shaft diameters. It is not economical because a guide must be prepared.

The present invention is designed to effectively solve both of the above problems.

Means for Solving the Problems The present invention, as a means for solving the above-mentioned problems, consists of integrally fabricating a support shaft for installing the screw guide in a fixed position and a pedestal for supporting the slider out of metal. At the same time, a groove is formed on the seating surface of the pedestal, and a slider that slides into the reciprocating spiral groove is formed as a separate part, and the slider is fitted into the groove and the slider is fitted over the groove. It is made of hard metal and brazed to the inner surface of the groove to form an integral structure.

Effects With the above-described configuration, the present invention allows sliders with different curvatures to be appropriately selected and fitted into the grooves of the pedestal and brazed, and the screw guide body consisting of the support shaft and the pedestal can be shared. can. As a result, screw shafts with different diameters, that is, helical grooves with different curvatures, can be effectively dealt with simply by changing the slider.

In addition, with the above configuration, by selecting cemented carbide as the material for the slider portion, fitting it into the groove of the pedestal, and brazing it, the wear of the slider portion that slides against the spiral groove is effectively suppressed, and sliding becomes smooth. The shower can be operated stably over a long period of time, and its performance can be improved. With the present invention, it is possible to effectively solve the conventional problem of early failure of the screw guide in screw shaft-driven sliding showers and the frequent shutdowns associated with this.

Example Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall structure of a screw shaft driven sliding shower. 1 indicates a shower pipe installed in the width direction of the paper net or felt. The shower pipe 1 is connected at one end side to one end of a sliding pipe 3 that accommodates a screw shaft 2 by an arm 4, and a screw guide 5 is assembled to the other end of the sliding pipe 3, and the screw guide 5 into the reciprocating spiral groove 6 of the screw shaft 2. Screw guide 5 is screw shaft 2
is rotated by a motor M, so that it slides back and forth along with the sliding pipe 3 while sliding in the reciprocating spiral groove 6, causing the shower pipe 1 connected to the sliding pipe 3 to slide back and forth.

2 to 5 show the screw guide 5. As shown in FIG.

The screw guide 5 is composed of a support shaft 7, a pedestal 8, and a slider 9. The pedestal 8 is provided at one end of the support shaft 7, and both 7,
8 is integrally processed with metal. A rectangular groove 10 passing through the center and perpendicular to the axis is provided on the seat surface of the pedestal 8. The pedestal 8 has a pair of opposing side surfaces 11 that are parallel to the groove 10, and the other opposing side surfaces 12 are arcuate. The groove 10 is open at both ends at the arcuate side surface 12.

On the other hand, the slider 9 is formed as a separate part. The slider 9 has a rectangular base (fitting part) 1 that matches the groove 10.
3, and a sliding portion 14 protruding from the groove 10, and a top surface 15 of the sliding portion 14 extending in the direction of the groove 10.
is a curved surface with a curvature that is approximately in phase with the bottom surface of the reciprocating spiral groove 6, and sliding claws 16 protruding from both ends of the groove 10 are formed at both ends of the curved top surface 15.

Similarly, the surface 1 of the pedestal portion defining the groove 10
7 is a curved surface with a curvature that is approximately in line with the circumferential surface of the screw shaft 2, and the ridge line forming the opening edge of the groove is a curved surface that is approximately in line with the curved top surface 15, and pedestals at both ends of the curved surface 17. The fitting portion 18 at the base of the sliding claw 16 is formed by increasing the height in accordance with the curved surface.

The slider 9 is made of cemented carbide, processed into the shape described above, and the cemented carbide slider 9 is fitted into the groove 10 of the pedestal 8 with its fitting portion 13. Brazed to the inner surface of the groove to create an integral structure. The above-mentioned cemented carbide is known by trade names such as Wideia, Carboloy, and Tungaloy.

As shown in FIG. 1, the screw guide 5 has its support shaft 7 removably inserted into the boss 19 so that the bottom surface of the pedestal 8 is supported by the end surface of the boss 19.
Attach the bolt 21 to the mounting tube 20 that is integrated with the sliding pipe 3.
The sliding part 14 of the slider 9 is fixed and removable.
protrudes from the inner surface of the mounting tube 20 and slides into the reciprocating spiral groove 6 of the screw shaft 2, and the sliding portion 14
The sliding claws 16 are slid together in the longitudinal direction of the reciprocating spiral groove 6, and the curved top surface 15 thereof is brought into contact with or close to the bottom surface of the spiral groove 6 as shown in FIG. The forming surface 17 is brought into contact with or close to the outer peripheral surface of the screw shaft 2.

In this way, when the screw shaft 2 is rotationally driven by the motor 16, the screw guide 5 is rotated.
The cemented carbide slider 9 slides back and forth with the sliding pipe 3 while sliding against the reciprocating spiral groove 6, causing the shower pipe 1 connected by the arm 4 to slide back and forth.

Effects of the invention As mentioned above, in the screw shaft-driven sliding shower, a large load is applied to the screw guide, especially its sliding portion, due to the tension of the shower pipe, and friction corresponding to the load is normally generated. It is happening. In addition, the contact area between the screw guide and the reciprocating spiral groove is necessarily several tenths of that of the latter, so the screw guide, especially its sliding part, is subject to significant wear, which causes unstable operation. , requiring short-term replacement or suspension of operation.

The present invention has the above-mentioned configuration, and by appropriately selecting slides with different curvatures of the curved top surface, fitting them into the grooves of the pedestal, and brazing them, the screw guide body can be shared, and only the sliders can be changed to improve the diameter. In addition to being able to handle different types of screw shafts, this configuration allows the slider portion to be made of cemented carbide and is brazed into the groove of the pedestal, making it possible to create a slider that slides against the reciprocating spiral groove. This effectively prevents wear on the child parts, greatly extending their service life and ensuring long-term stable operation of the sliding shower. This effectively solves the problem of early failure of the screw guide in screw shaft drive type sliding showers, resulting in operational problems or frequent shutdowns, which has been a problem in the past. It greatly contributes to improving the performance of sliding showers.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of the driving part of the sliding shower, FIG. 2 is an exploded perspective view of the screw guide, FIG. 3 is a side view of the screw guide, and FIG. The figure is a front view of the same, and FIG. 5 is a plan view of the same. 1... Shower pipe, 2... Screw shaft, 3... Sliding pipe, 5... Screw guide, 6... Reciprocating spiral groove, 7... Support shaft, 8... Pedestal, 9... Slider , 10... Rectangular groove, 13... Rectangular base, 14... Sliding portion, 15... Curved top surface, 1
6...Sliding claw, 17...Pedestal surface, 18...Fitting receiver, 19...Boss, 20...Mounting tube, 21...
bolt.

Claims (1)

[Scope of utility model registration request] This is a screw guide that slides into the reciprocating spiral groove of a screw shaft for reciprocating drive to obtain reciprocating sliding movement of a shower pipe. A sliding device characterized in that a groove is provided, a slider that slides into the reciprocating spiral groove is fitted into the groove, and the slider is made of cemented carbide and brazed to the inner surface of the groove of the pedestal. Screw guide for showers.