KR101982508B1 - Hydraulic Device for Pressing Pipe Jaw - Google Patents

Abstract

The present invention relates to a hydraulic press apparatus for pressing a pipe jaw and, more specifically, to a hydraulic press apparatus for pressing a jaw installed at a connection portion of a pipe, comprising: a main body having a driving motor applying or releasing working pressure in accordance with hydraulic pressure, and a hydraulic pressure supply unit; a grip unit connected to a lower end side of the main body and provided with a working switch triggering a driving signal to the driving motor; a hydraulic cylinder provided at a front side of the main body; a piston unit provided within the cylinder and moving forwards by the applied working pressure; a pair of rollers provided at a front tip end of the piston unit; a tool head provided with a pair of installation recesses connected to the front side of the cylinder, guiding movement of the piston and the rollers and formed at a facing side surface in a longitudinal direction; and a fastener fixatedly installed at a front side of the tool head by a fixation pin and having a pair of grippers, hinged and coupled, positioned at the installation recesses, wherein if the hydraulic pressure is provided by the working pressure, the piston and the rollers move forward to press pressing units of the grippers of the fastener toward each other such that the jaw mounted on the pipe is pressed. The present invention monitors oil pressure through a hydraulic pressure sensor in real time to be capable of having regular press quality.

Description

Technical Field [0001] The present invention relates to a hydraulic press device for press fitting,

The present invention relates to a hydraulic press apparatus for pipe-jaw pressing.

[0002] Generally, a joint method for connecting a pipe made of stainless steel or copper, which is applied to a water supply water supply pipe, a building water supply pipe, a hot water supply pipe pipe or a boiler pipe pipe, There is a method of assembling and joining (mechanical top joint, PL joining, slip-in joining, etc.) and a joining method (also known as molco joining) in which the pipe itself is pressed and formed by pressing.

A joint method of connecting pipes by using the compactor is a method which is mainly used at present, and a joint (joint, joint) having an O-ring is inserted into the inner diameter of a joint between a pipe and a pipe, and then a tightening tool and a press So that the connection between the pipes is achieved.

Korean Patent Publication No. 10-2012-0032723 Korean Patent No. 10-0965453 Korean Patent No. 10-0975414 Korean Patent No. 10-1169664

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide an automatic return function for immediately stopping advancement of a piston when an operation switch is released, (Oil pressure) is monitored in real time to have a consistently consistent press quality. When the maximum pressure achieved is different from the set working pressure, the user is informed via a warning sound, an LED, a display means, etc., Automatic retraction to return the piston to its starting position when the maximum operating pressure is reached, and manual retraction via relief button to allow the user to start Position, and the tool head can be retracted in tight corners and other difficult working areas. And it is an object of the present invention to provide a hydraulic press apparatus for pipe jaw crimping capable of rotating 350 degrees around a longitudinal axis for convenient access and automatically shutting off a motor after completion of compression and checking battery capacity.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

An object of the present invention is to provide a hydraulic press apparatus for pressing a jaw mounted on a joint of a pipe, comprising: a main body having a drive motor for applying and releasing a drive pressure according to a hydraulic pressure; A grip portion connected to a lower end side of the main body and having an operation switch for triggering a drive signal to the drive motor; A pair of rollers provided at a front end of the piston unit, the pair of rollers being provided at a front end of the piston unit; A tool head connected to a front side of the hydraulic cylinder and having a piston portion and a pair of mounting grooves formed in a longitudinal direction on opposite sides to guide movement of the roller; And a tightening port fixedly mounted on the front side of the tool head by a fixing pin and each of a pair of clamping parts hinged to each other is positioned in the mounting groove, And the piston portion and the roller are advanced to press the crimping portions of the clamping portions of the tightening means against each other to press the jaw attached to the pipe.

The driving motor is configured to rotate a rotary member connected to a driving shaft of the driving motor, the rotary member is connected to an eccentric bearing, and the rotary member drives a valve for opening and closing a hydraulic injection hole connected to the hydraulic pressure supply portion And the like.

The piston may include a piston positioned behind the roller, and a spring mounting end connected to a rear side of the piston, the spring mounting end of the piston being mounted to the outside of the piston.

And a stopper that restrains the forward movement of the spring. When the operating pressure is applied according to the hydraulic pressure, the piston, the roller, and the spring mounting end are advanced and the spring is compressed.

And the piston, the roller, and the spring mounting end are automatically retracted by the restoring force of the spring when the operating pressure is released according to the hydraulic pressure.

A guide groove provided on one side of the front outer surface of the hydraulic cylinder in a circumferential direction and a guide groove formed in a circumferential direction on one side of a rear inner surface of the tool head and fitted to the guide groove, And an insertion end.

And a stroke adjusting device connected to the stopper and adjusting the position of the piston before driving the hydraulic pressure supply unit.

A hydraulic pressure sensor for measuring a driving pressure applied to the piston in real time; And a control unit for controlling the hydraulic pressure of the hydraulic pressure supply unit to be released when the driving pressure measured by the hydraulic pressure sensor reaches the set working pressure.

In addition, the control unit controls the notifying unit to transmit a notification signal when the measured driving pressure and the set working pressure are different.

And a battery remaining amount detecting unit for measuring a remaining amount of the battery, wherein the notifying unit notifies the battery remaining amount detecting unit of the remaining battery remaining amount And display the image.

According to the hydraulic press apparatus for pipe jar squeeze according to the embodiment of the present invention, when the operation switch is released, the automatic return function for immediately stopping the advancement of the piston is performed, and the oil pressure (hydraulic pressure) Monitoring can be consistently consistent with the press quality. If the maximum pressure achieved is different from the set working pressure, the user is informed via a beep, LED, display means, etc. The user checks the squeezing degree of the working position, And an automatic retraction device that allows the piston to return to its starting position when the maximum operating pressure is reached. The manual retraction feature via the relief button allows the user to return the piston to the starting position in the event of incorrect compression, The head has a length that allows more convenient access in difficult edges and other difficult working areas. 350 can also rotate about an axis direction, and automatically cut off the motor after the compression is complete and has an effect which can determine the battery capacity.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1 is a perspective view of a hydraulic press apparatus for pipe jaw pressing according to an embodiment of the present invention,
FIG. 2 is a side view of a hydraulic press apparatus for pipe-press fitting according to an embodiment of the present invention,
3 is a perspective view of a hydraulic press apparatus for pipe jaw pressing according to an embodiment of the present invention,
4 is a plan view of a hydraulic press apparatus for pipe-jaw pressing according to an embodiment of the present invention,
5 is a cross-sectional view of a hydraulic press apparatus for pipe-jaw pressing according to an embodiment of the present invention,
6 is a partial cross-sectional view of a hydraulic press apparatus for pipe-press fitting according to an embodiment of the present invention,
7 is a cross-sectional view of a hydraulic press apparatus for pipe-press compression in which the piston is advanced according to an embodiment of the present invention,
8A is a cross-sectional view of a hydraulic press apparatus for pipe-jaw pressing when the stroke adjusting apparatus according to the embodiment of the present invention is located at a second point,
FIG. 8B is a sectional view of the hydraulic press apparatus for pipe jaw pressing when the stroke adjusting apparatus according to the embodiment of the present invention is located at the third point;
9 is a block diagram illustrating a signal flow of a control unit according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views that are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. Although the terms first, second, etc. have been used in various embodiments of the present disclosure to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

Hereinafter, the configuration and function of the hydraulic press apparatus 100 for pipe-press fitting according to the embodiment of the present invention will be described. 1 is a perspective view of a hydraulic press apparatus 100 for pipe jaw press according to an embodiment of the present invention. 2 is a side view of a hydraulic press apparatus 100 for pipe-jaw pressing according to an embodiment of the present invention. 3 is a perspective view of a hydraulic press apparatus 100 for pipe jaw pressing according to an embodiment of the present invention. And FIG. 4 is a plan view of the hydraulic press apparatus 100 for pipe jaw pressing according to the embodiment of the present invention.

1 to 4, a hydraulic press apparatus 100 for pipe-jaw pressing according to an embodiment of the present invention includes a main body 20 provided with a relief button 29 and an operating switch 13 , A tool head (50), a roller (44), a stroke adjuster (60), a tightening tool (4), and a fixing pin (53) ), A battery 70, a notification means 90, and the like.

The notification means 90 according to the embodiment of the present invention may be configured as an LED as shown in FIGS. 1 to 4, and may be configured to display charge control of the battery 70, tool function, .

In addition, the release button 29 provided on the main body 20 is a button that can release the hydraulic pressure when an error or an emergency occurs, and to reset the piston 41 by retracting it.

In addition, the battery 70 according to the embodiment of the present invention, which is mounted on the lower end of the grip portion 11, is composed of a 18V 3.0 Ah lithium ion battery 70. Also, the remaining amount of the battery 70 can be displayed through the notifying means 90.

The operation switch 13 (trigger) is a motor 21 operation button for starting the press work, and the tool head 50 is a main body 20 for connecting the tightening tool 4, As shown in Fig. In addition, the fixing pin 53 is a pin 53 for fixing the tightening tool 4, and the stroke adjusting device 60 can shorten the working time by adjusting the position of the piston 41 before the operation to three stages .

According to the hydraulic press apparatus 100 for pipe-press fitting according to the embodiment of the present invention, when the operation switch 13 is released, it has an automatic return function for immediately stopping the advancing movement of the piston 41, 81) to monitor the oil pressure (hydraulic pressure) in real time, thereby ensuring a consistently consistent press quality.

When the maximum operating pressure achieved is different from the set operating pressure, the user is informed via a warning sound, an LED, a display means, etc., and the user can check the degree of squeezing of the working position and rework as necessary. When the maximum working pressure is reached, And an automatic retracting device for returning the movable member 41 to the starting position.

In addition, the user can return the piston 41 to the start position if the tool is incorrectly compressed through the manual retraction function via the relief button 29, and the tool head 50 can be more conveniently accessed in hard edges and other difficult working areas The motor 70 can be rotated 350 degrees around the longitudinal axis to automatically shut off the drive motor 21 after the compression is completed and confirm the capacity of the battery 70. Also, the ergonomically formed housing 10 is manufactured by double injection molding, and the grip portion 11 is coated with rubber (anti-slip pad 12) to prevent slippage.

Hereinafter, a method of operating the hydraulic press apparatus 100 for pipe-press fitting according to an embodiment of the present invention will be described. First, the preliminary preparation step before the pressing process of the hydraulic press apparatus 100 for pipe jaw pressing according to the embodiment of the present invention will be briefly described. As shown in Fig. 3, first, the tightening tool 4 is attached to the tool header via the fixing pin 53. [ The tightening tool 4 corresponds to a tool for pressing the jaw 2 of the pipe 1 connecting portion and a pair of clamping portions 5 are coupled to the hinge 7 by a connecting portion, The piston 41 is advanced so that the pair of clamps 5 are rotated about the hinge 7 and the jaw 2 is squeezed through the crimping portion 8 at the end of the clamp 5.

After the jaws 2 are pressed against the connecting portions of the pipe 1, the clamping portions 5 of the clamping holes 4 are opened and the clamping portions 8 of the clamping portions 5 are set in contact with the jaws 3 . Then, the user adjusts the position of the piston 41 by the stroke adjuster 60 as necessary, and then the operation switch 13 is operated to perform the pressing process.

5 is a cross-sectional view of a hydraulic press apparatus 100 for pipe jaw press according to an embodiment of the present invention. And FIG. 6 is a partial cross-sectional view of a hydraulic press apparatus 100 for pipe jaw press according to an embodiment of the present invention. And FIG. 7 is a cross-sectional view of the hydraulic press apparatus 100 for pipe jaw pressing in which the piston 41 is advanced according to the embodiment of the present invention.

8A is a cross-sectional view of the hydraulic press apparatus 100 for pipe-press compression when the stroke adjusting apparatus 60 according to the embodiment of the present invention is located at the second point, and FIG. 8B is a cross- Sectional view of the hydraulic press apparatus 100 for pipe-jaw pressing when the stroke adjuster 60 according to the example is located at the third point. And FIG. 9 is a block diagram showing a signal flow of the control unit 80 according to the embodiment of the present invention.

5 to 7, the main body 20 is provided with an oil tank 28, a drive motor 21 for applying and releasing an operating pressure corresponding to the hydraulic pressure, and a hydraulic pressure supply unit 27 Able to know.

The grip portion 11 is connected to the lower end side of the main body 20 and is provided with an operation switch 13 for triggering a drive signal to the drive motor 21. [ In addition, a hydraulic cylinder 30 is provided in front of the main body 20, and the piston portion 40 is provided in the cylinder 30 so as to be advanced by the applied driving pressure.

Further, a pair of pistons 40 are provided at the front end of the piston 40. The tool head 50 is connected to the front side of the cylinder 30 and includes a pair of mounting grooves 52 formed in the longitudinal direction on opposite sides to guide the movement of the piston 40 and the roller 44 .

Therefore, when the hydraulic pressure is supplied by the drive pressure, the piston portion 40 and the roller 44 are advanced so that the compression portions 8 of the clamping portions 5 of the tightening tool 4 are pressed against each other, It is understood that the jaws 2 are squeezed.

5, the drive motor 21 is configured to rotate the rotary member 22 connected to the drive shaft of the drive motor 21. The rotary member 22 includes an eccentric bearing 23, It can be seen that they are connected. And is configured to open and close the valve 25 provided at one side of the hydraulic pressure injection hole 26 connected to the hydraulic pressure supply part 27 by the rotation of the rotary member 22. [ That is, when the rotary member 22 is rotated 180 degrees by the drive motor 21, the drive unit 24 is moved upward to open the valve 25 to apply the hydraulic pressure. The valve 25 is closed.

5, the piston portion 40 includes a piston 41 positioned at the rear of the roller 44, and a spring 43 connected to the rear side of the piston 41 and outside the piston 41 And a spring mounting end 42 provided to mount the spring mount 42. [ And a stopper (61) for restraining the forward movement of the spring (43).

Accordingly, when the driving pressure is applied according to the hydraulic pressure, the piston 41, the roller 44, and the spring mounting end 42 are advanced and the spring 43 is compressed as shown in FIG.

The piston 41, the roller 44, and the spring mounting end 42 are automatically retracted by the restoring force of the compressed spring 43 when the driving pressure is released in accordance with the hydraulic pressure.

5 to 7, a guide groove 31 is provided in a circumferential direction on one side of a front outer surface of the cylinder 30, and a guide groove 31 is formed on one side of a rear inner surface of the tool head 50 It can be seen that the insertion end 51 to be shaped is provided. Therefore, the tool head 50 is configured to be able to rotate by 350 degrees with respect to the longitudinal axis by the insertion end 51 and the guide groove 31. By employing the rotatable structure of the tool head 50, the user can more conveniently access the hard edges and other difficult working areas.

And a stroke adjusting device 60 connected to the stopper 61 to adjust the position of the piston 41 before the oil pressure supply part 27 is driven. In the embodiment of the present invention, the stroke adjusting device 60 can set the piston 41 at the start position to the first, second, and third positions in three stages. That is, as shown in FIG. 5, the stroke adjusting device 60 can be positioned at the first point, and the stopper 61 is moved upward by pressing the stopper releasing button 62 of the stroke adjusting device 60 , The stroke adjusting device 60 is moved along the stroke moving rail 63 of the tool head 50 to move the stroke adjusting device 60 to the second point as shown in FIG. It is possible to release the depression of the piston 62 to adjust the position of the piston 41 by positioning the stroke adjusting device 60 at the second position. The stopper release button 62 of the stroke adjuster 60 is pressed to move the stopper 61 upward and then the stroke adjuster 60 is moved along the movement rail 63 of the tool head 50 , The stroke adjuster 60 is moved to the third point as shown in FIG. 8B and then the stopper release button 62 is released to position the stroke adjuster 60 at the third point, Can be adjusted.

The hydraulic press apparatus 100 for pipe-press fitting according to the embodiment of the present invention includes a hydraulic pressure sensor 81 for measuring a driving pressure applied to the piston 41 in real time. The control unit 80 controls the hydraulic pressure of the hydraulic pressure supply unit 27 to be released when the driving pressure measured by the hydraulic pressure sensor 81 reaches the set working pressure.

If the measured driving pressure is different from the measured operating pressure, the controller 80 controls the notifying means 90, which may include an LED, a beep sound, various display means, and the like, to transmit a notification signal.

The battery 70 supplies power to the drive motor 21, the hydraulic pressure supply unit 27 and the notification means 90. The remaining capacity of the battery 70 is measured through the battery remaining amount detection unit 82, The means 90 is configured to display the measured remaining battery level in the remaining battery level sensing portion 82. [

It should be noted that the above-described apparatus and method are not limited to the configurations and methods of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

1: pipe
2: Encounters
3: encounter home
4: Fasteners
5:
6:
7: Hinge
8:
10: Housing
11: grip portion
12: Non-slip pad
13: Operation switch
20:
21: Driving motor
22: Rotating member
23: Eccentric bearing
24:
25: Valve
26: Hydraulic injection hole
27: Hydraulic supply part
28: Oil tank
29: Relief button
30: Cylinder
31: Guide groove
40: Piston part
41: Piston
42: spring-loaded stage
43: spring
44: Roller
50: Tollhead
51: insertion end
52: mounting groove
53: Fixing pin
60:
61: Stopper
62: Stopper release button
63: Stroke movement rail
70: Battery
80:
81: Hydraulic sensor
82: Battery remaining amount detection unit
90: Notification means
100: Hydraulic press device for press fitting

Claims (10)

A hydraulic press apparatus for pressing a jaw mounted on a joint of a pipe,
A drive motor for applying and releasing drive pressure in accordance with the hydraulic pressure, and a main body having a hydraulic pressure supply portion;
A grip portion connected to a lower end side of the main body and having an operation switch for triggering a drive signal to the drive motor;
A hydraulic cylinder disposed in front of the main body; a piston unit provided in the hydraulic cylinder and advanced by a driving pressure applied;
A pair of rollers provided at a front end of the piston portion;
A tool head connected to a front side of the hydraulic cylinder and having a piston portion and a pair of mounting grooves formed in a longitudinal direction on opposite sides to guide movement of the roller; And
And a tightening port fixedly mounted on the front side of the tool head by a fixing pin and each of a pair of clamping portions hinged to each other is positioned in the mounting groove,
When the hydraulic pressure is provided by the driving pressure, the piston and the roller are advanced to press the crimping portions of the clamping portions of the tightening means against each other to press the jaw mounted on the pipe,
Wherein the driving motor is configured to rotate a rotating member connected to a driving shaft of the driving motor, the rotating member is connected to an eccentric bearing, and the rotating member drives a valve for opening and closing a hydraulic pressure injection hole connected to the hydraulic pressure supply portion And,
Wherein the piston includes a piston positioned behind the roller, and a spring mounting end connected to a rear side of the piston and adapted to be spring loaded to the outside of the piston,
And a stopper for restraining the forward movement of the spring, wherein when the operating pressure is applied according to the hydraulic pressure, the piston, the roller, the spring mounting end are advanced, the spring is compressed,
The piston, the roller, and the spring mounting end are automatically retracted by the restoring force of the spring when the operating pressure is released in accordance with the oil pressure,
A guide groove provided circumferentially on one side of a front outer surface of the hydraulic cylinder; an insertion portion provided circumferentially on one side of a rear inner surface of the tool head and fitted to the guide groove, Comprising:
And a stroke adjusting device connected to the stopper and adjusting the position of the piston before driving the hydraulic pressure supply part,
A hydraulic pressure sensor for measuring a driving pressure applied to the piston in real time; and a controller for controlling the hydraulic pressure of the hydraulic pressure supply unit to be released when the driving pressure measured by the hydraulic pressure sensor reaches an operating pressure,
Wherein the control unit controls the notifying unit to transmit the notification signal when the measured driving pressure and the set working pressure are different,
A battery for supplying power to the driving motor, the hydraulic pressure supply unit, the notification unit, and a remaining battery level sensor for measuring the remaining battery level, wherein the notification unit displays the measured remaining battery level in the remaining battery level sensing unit And the hydraulic press device for press fitting the pipe jaw. delete delete delete delete delete delete delete delete delete

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