JPS6138735Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly consists of a corrugated flexible tube 1 for fluid transport, as shown in FIG.
In order to prevent the end of the flexible tube 1 from coming off when one end is connected to the straight pipe 14 via the connection plug 9 (referred to as a connector), the inner surface of the connection plug 9 is This is a flexible tube crushing device used mainly when forming a tube crushing portion 11 that enters and is locked in a groove 10 formed at one end by manual operation on site. The present invention relates to a flexible tube crushing device, which is provided with a crushing part that crushes the tube end gripped by the fixed gripping part by moving close to the fixed gripping part.

In this way, with the flexible tube crushing device,
For example, there is one shown in FIG. 5 that has been generally known. This allows the crushing part 3' to rotate relative to the tip of the screw shaft 12' of the screw mechanism 6'.
The screw shaft 12' is held movably only in the axial direction,
The end portion of the flexible tube 1' fixed by the fixed gripping part 2' was configured to be crushed by the movement of the crushing part 3' as the screw shaft 12' rotated. In this case, the entire end face of the tube is pressed by the crushing part 3', and compressive stress is evenly applied to the entire portion of the tube 1' to be crushed between the fixed gripping part 2' and the crushing part 3'. When the tube is compressed, the entire portion undergoes buckling deformation. Therefore, during the crushing action, the buckling strength of the entire tube portion to be crushed acts on the crushing portion 3' as operational resistance. In particular, at the initial stage of crushing, that is, at the initial stage of buckling deformation, the buckling strength and the operating resistance as a reaction force to the buckling strength reach their maximum values. It exceeds the maximum value at the time of bending, and requires a very large operating force.
Particularly when the crushing work is carried out manually, there is a drawback that the work is labor intensive. In addition, the frame structure of the device must be made strong enough to withstand the reaction force of the buckling deformation operation force that resists the above-mentioned initial buckling strength, which reduces the overall size and weight of the device. It had some drawbacks.

Furthermore, since the tube collapsed portion 11 is formed with the edge of the flexible tube 1 protruding toward the axis of the tube, in order to prevent fluid flow resistance from increasing due to this protruding edge, It was also necessary to perform a separate bending process to bend this protruding end edge in a direction along the uniaxial axis of the tube.

In view of these circumstances, the present invention lowers the maximum value of the operating resistance at the initial stage of crushing the flexible tube so that it can be easily and comfortably crushed with a relatively small force, and at the same time, the edge of the flexible tube is It is an object to provide a flexible tube collapse device which can be bent inwards.

The characteristic configuration of the present invention for achieving the above object is that, in the above-mentioned flexible tube crushing device, the crushing part is connected to a rotating body that rotates around the same or almost the same axis as the tube axis. A plurality of rollers are each attached to be freely rotatable and rotate around the tube axis as the rotating body rotates with their edges in contact with each other, and the peripheral surface of the roller on the tube axis side is , is formed on an inclined surface that widens in the radial direction as it approaches the tube axis, and this configuration provides the following effects.

In other words, since the deformation progresses while locally pressing the edge of the flexible tube by the roller moving around the axis of the tube, in order to crush the flexible tube, in the crushing process, the tube to be crushed is There is no need for an operating force that resists the buckling strength of the entire part, and the crushing reaction force is a continuous relatively small value due to the local deformation of the tube by the rollers, unlike the conventional method. Due to the buckling deformation of the entire tube, there is no large peak value in operating resistance at the initial stage, and the maximum operating force required for crushing work can be reduced, reducing labor and fatigue, especially in manual crushing work. In addition to reducing the required strength of the frame structure and the like in the overall configuration of the device, this is advantageous in terms of reducing the weight and size of the entire device.

Since a plurality of independently rotatable rollers are pressed against the edge of the tube, the center of the formed tube crushed portion is less likely to be eccentric with respect to the tube axis, and the tube crushed portion can be accurately can be formed.

Moreover, when the crushing is completed, the edge of the tube is bent along the inner wall of the tube by the inclined surface formed on the circumferential surface of the roller, which reduces the flow resistance of the fluid passing through the tube. At the same time, the end face of the collapsed part of the tube is leveled by the roller and becomes flat without any unevenness, and the end face of the collapsed part of the tube, which becomes the seat surface when the tube is connected, improves the smoothness accuracy, resulting in a highly airtight tube connection. Now you can expect a good finish that is possible.

Next, an embodiment of the configuration of the present invention will be described based on the drawings.

As shown in FIG. 1, a concave groove 10 is formed on the inner surface of the connection plug 9 to prevent the flexible tube 1 from coming off at the connection between the flexible tube 1 for fluid transport and the rigid tube 14. As shown in FIG. 2, the flexible tube crushing device that forms the tube crushing portion 11 that is inserted into the tube and locked therein includes a surrounding shape with a handle 15 for the operator to grasp with his/her hand. A swinging member 17 is attached to the lower part of the frame 16, and recesses 19, 19 for inserting the flexible tube 1 are formed on the opposite side of the lower side member 18 of the frame 16 and the swinging member 17. , 19, the flexible tube 1 is tightened and clamped by operating the tightening screw 20.
The fixed grip part 2 is configured, and the frame 16
The screw mechanism 6 is constructed by screwing the screw shaft 12 into the screw hole 21 formed in the upper part of the screw shaft 12, and the rotating body 4 inserted into the hole 25 formed in the screw shaft 12 is fixed with a pin 26. A ratchet mechanism 22 is formed at the upper end of the screw shaft 12, and by repeatedly rocking the ratchet mechanism 22 with a ratchet trench 23 fitted therein, the screw shaft 12 rotates and the rotating body 4 is rotated. While pressing down, the end portion of the flexible tube 1 fixed by the fixed grip part 2 is brought into pressure contact with the rotating body 4 by four rollers 5 rotatably provided around the horizontal axis P. The structure is such that the material is crushed sequentially.

In addition, when cutting the flexible tube 1 at the trough of the thick wall portion formed in a wave shape in the longitudinal direction and crushing the cut end, the tube crushing portion 11 as shown in FIG. Projection 7 at the end
In order to prevent this from occurring, as shown in FIG. 3, an inclined surface 8 is formed on one side of the roller 5, and as shown in FIG. 7 is bent and inserted into the tube 1.

Next, another embodiment of the present invention will be described.

(a) Instead of the manual method in which the rotating body 4 is propelled by repeated rocking of the ratchet trench 23, a motor and the screw shaft 12 are interlocked, and the rotating body 4 is propelled by the driving force of the motor. Configure it as follows.

(b) Instead of the screw mechanism 6 causing the rotary body 4 to move forward, the rotary body 4 is pressed downward by a spring or a piston, and the rotational driving force is transmitted to the rotary body by a gear, a belt, etc. do.

(c) Each of the rollers 5 is attached to the fixed gripping section 2.
The tube is configured to have a truncated conical shape with a larger diameter toward the fixed axis, and is configured so that the tube 1 is crushed and simultaneously deformed outward.

(d) The four rollers 5...each rotation axis 2
is configured to have an inclination angle with respect to the tube fixed axis of the fixed gripping part 2 such that the further outward the tube is, the further away from the fixed gripping part 2 it is.

(e) Each of the rollers 5 has an inclination angle such that the rotational axis P of the roller 5 recedes toward the rear in the traveling direction as it goes outward in plan view.

(F) The fixed gripping part 2 is configured to be able to change its angle with respect to the rotational axis of the crushing part 3.

[Brief explanation of the drawing]

The drawings show an embodiment of the flexible tube crushing device according to the present invention, the first side is a partially cutaway side view showing the tube connected state, the second side is a partially cutaway side view showing the whole, and the third side is a second side view. 4A and 4B are partially cutaway side views of the tube, and FIG. 5 is a partially cutaway side view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Flexible tube, 2... Fixed grip part, 3... Crushing part, 4... Rotating body, 5... Roller, 6... Screw mechanism, 7... Projection part, 8... Inclined surface.

Claims (1)

[Claims for Utility Model Registration] Fixed grip portion 2 of flexible tube 1;
A flexible tube crushing tool is provided with a crushing part 3 that crushes the end of the tube 1 gripped by the fixed gripping part 2 by moving close to the fixed gripping part 2. A plurality of rollers 5 are attached to a rotating body 14 driving and rotating around the same or almost the same axis, and are in contact with the edge of the tube 1 and rotating around the axis of the tube as the rotating body 4 rotates. …
The rollers 5 are each configured to be freely rotatable, and the circumferential surface of the roller 5 on the tube 1 axis side is formed into an inclined surface 8 that widens in the radial direction as it approaches the tube 1 axis. Characteristic flexible tube crushing device. The flexible tube crushing device according to claim 1, wherein the crushing part 3 is rotated and moved toward the fixed grip part 2 by a screw mechanism 6. The flexible roller according to claim 1 or 2, wherein the rotational axis P of the roller 5 is configured to be perpendicular to the tube fixed axis of the fixed grip part 2. Tube crushing device. The flexible tube crusher according to claim 1 or 2, wherein the rotational axis P of the rollers 5 is orthogonal to the tube fixed axis of the fixed grip part 2. Device. The rotation axis P of the roller 5 is configured to have an inclination angle with respect to the tube fixed axis of the fixed grip part 2 such that the further outward it is, the further away from the fixed grip part 2 it is. A flexible tube crushing device according to any one of claims 1 or 2. The flexible tube crushing device according to claim 1, wherein the rollers 5 are formed in a truncated cone shape with a larger diameter toward the tube fixed axis of the fixed grip portion 2. Any of the utility model registration claims 1 or 2, wherein the rotational axis P of the roller 5 has an inclination angle that recedes toward the rear in the traveling direction of the roller 5 as it goes outward in plan view. The flexible tube crushing device according to claim 1.