KR102014414B1 - Pipe bending device - Google Patents

Abstract

The present invention relates to a pipe bending device which can be implemented so as to bend a pipe for a greenhouse in a curved form, comprising: a shelf part forming a box form by a plurality of frames; a pipe transfer part connected to the shelf part and for transferring the pipe from one side of an upper part of the shelf part to the other one side of the shelf part when the pipe enters; and a pipe pressing part for pressing the pipe being transferred by the pipe transfer part in a curved form. Therefore, the present invention is capable of bending the pipe to a desired degree of curvature by a user.

Description

PIPE BENDING DEVICE {PIPE BENDING DEVICE}

The present invention relates to a pipe bending device, and more particularly, to a pipe bending device implemented to bend the pipe for the vinyl house in a curved form.

In general, the pipe bending machine firstly inserts a straight pipe between the circular block and the auxiliary block spaced apart from the circular block, and then clamps the pipe by inserting the straight pipe end on one side of the circular block and bending the pipe by rotating the circular block. After fixing the straight pipe end to the fixed body, the auxiliary block was rotated in the track around the outer circumference of the circular block to bend the pipe.

In addition, another pipe bending machine, secondly, the press head is mounted on a cylinder of a pressurizing device such as a hydraulic press, and the press head is placed in front of the press head with a pair of guide rollers in which a straight pipe is mounted. The head was moved in the direction of the cradle corresponding to the pair of guide rollers to bend the pipe by the pressing force of the press head applied to the pipe.

In the case of the conventional pipe bending device as described above, it has a disadvantage that it is difficult to adjust the bending angle according to the user's needs.

On the other hand, the background art described above is technical information possessed by the inventors for the derivation of the present invention or acquired in the derivation process of the present invention, and is not necessarily a publicly known technique disclosed to the general public before the application of the present invention. .

Korean Patent Publication No. 10-2014-0109350 Korean Patent Publication No. 10-2018-0118930

One side of the present invention provides a pipe banding device implemented by the user to bend the pipe with a curvature of the desired degree by pressing the pipe being transported by the roller along the upper side of the box-shaped vessel to the curved plate.

It is also an object of the present invention to provide an adhesive composition which can be applied with a sufficient thickness and evenness to a handle held by a user, and can reduce odor and bacteria generation.

The technical problem of the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Pipe bending device according to an embodiment of the present invention, the shelf portion to form a box by a plurality of frames; A pipe transfer unit connected to the shelf and configured to transfer the pipe from the upper side of the shelf to the other side of the shelf; And a pipe pressurizing unit which pressurizes the pipe being conveyed by the pipe conveying unit in a curved form.

In one embodiment, the shelf, the feed roller is provided on one side and the other side so as to reduce the friction with the pipe, the pipe conveying unit is connected to one side of the first belt to drive the first belt Drive motors; A first pulley connected to the other side of the first belt and rotating according to the driving of the first belt; A second pulley installed on an upper side of the first pulley to rotate together with the rotation of the first pulley and connected to one side of a second belt to drive the second belt; A third pulley installed on the other side of the second belt to be spaced apart from the second pulley and rotated according to the driving of the second belt; A first rod extending from the upper side of the second pulley to be exposed to the upper side of the shelf part; A first transfer roller installed on an upper portion of the first rod and forming a seating groove for seating the pipe along an outer circumferential surface thereof, and rotating together with the rotation of the first rod to transport the pipe seated in the seating groove; ; A second rod extending from the upper side of the third pulley to be exposed to the upper side of the shelf part; And a second conveyance installed at an upper portion of the second rod and forming a seating groove for seating the pipe along an outer circumferential surface thereof, and rotating together with the rotation of the second rod to transport the pipe seated in the seating groove. A first guide plate including a roller, wherein the pipe pressurizing portion is formed in a curved shape, one side of which is rotatably connected to one side edge of the front end of the shelf, and presses a pipe to the first transfer roller; A second guide plate formed in a curved shape, the other side of which is rotatably connected to the other edge of the front end of the shelf part, and configured to press a pipe with the second feed roller; A pressure roller which is rotatably connected between the first guide plate and the second guide plate and pressurizes the pipe being transported to a seating groove formed along an outer circumferential surface thereof; It is connected to the front front of the shelf so as to be movable in the front-rear direction, the other side of the first guide plate is installed on one side of the rear end is connected, the other side of the second guide plate is installed on the other side of the rear end, the middle of the rear end A pressure plate to which the pressure roller is installed; And a pressurization lever rotatably connected to an upper front end of the shelf part and configured to move the pressure plate toward the rear end of the shelf part when the user pulls and rotates the first guide plate or the second guide plate. And a spring is connected to the upper front end of the shelf part so as to return after pressing the pipe, and the pipe pressurization part is installed at the front end of the pressure plate to push or pull the pressure plate in a pipe direction. The pressure driving unit may further include: a support bar installed at a front end of the pressure plate to push or pull the pressure plate; A first cross frame having a rear end connected to one side of the support bar to be rotatable; A second cross frame having a rear end rotatably connected to the other side of the support bar and cross-connected with the first cross frame in the form of "X"; And spaced apart at a front end of the support bar, and connected to a rear end of the first cross frame and a front end of the second cross frame so as to be rotatable, and connected to the first cross frame and the second cross frame. And a frame driver configured to adjust a shear gap, wherein the frame driver pushes the support bar toward the pressing plate as the front ends of the first cross frame and the second cross frame are close to each other, and the first cross. As the front end of the frame and the second cross frame move away from each other, the support bar may be pulled out.

According to one aspect of the present invention, by bending the pipe being transported by the roller along the upper side of the box-shaped shelf with a curved plate to bend the pipe to a degree of curvature desired by the user to improve the bending work efficiency It can provide an effect of improving.

In addition, it has the effect of providing an adhesive composition that is hygienic and excellent in adhesion when the handle cover is attached.

The effects of the present invention are not limited to the above-mentioned effects, and various effects may be included within the scope apparent to those skilled in the art from the following description.

1 is a view showing a schematic configuration of a pipe bending device according to an embodiment of the present invention.
FIG. 2 is a view showing a pipe conveying part of FIG. 1.
3 and 4 are views illustrating one embodiment of the pipe pressurization unit of FIG. 1.
FIG. 5 is a view for explaining a pressing method of the pipe pressing portion of FIG. 3.
6 is a view illustrating another embodiment of the pipe pressurization unit of FIG. 1.
7 and 8 are views illustrating the frame driver of FIG. 6.
9 is a view showing the elastic support of FIG.
10 and 11 are views illustrating the support pillar of FIG. 8.
FIG. 12 is a view showing the cross elastic part of FIG. 10.
FIG. 13 is a view illustrating the vertical elastic part of FIG. 11.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

1 is a view showing a schematic configuration of a pipe bending device according to an embodiment of the present invention.

Referring to FIG. 1, a pipe bending device 10 according to an embodiment of the present invention includes a shelf part 100, a pipe conveying part 200, and a pipe pressing part 300.

Shelf 100 is formed in the form of a box to form a top side of the plane by a plurality of frames are connected to each other in a vertical or horizontal direction, the pipe conveying unit 200 is installed, the pipe pressurizing portion in the upper front end 300 is installed to allow the pipe to pass between the pipe transfer part 200 and the pipe pressurizing part 300.

In one embodiment, the shelf portion 100, the upper one side and the pipe so that the pipe is not directly seated on the upper surface of the shelf portion 100 is spaced apart from the upper side by a predetermined distance to reduce the transport friction of the pipe and It may be provided with a feed roller 110 on the other side of the upper.

The pipe transfer unit 200 is connected to the shelf unit 100, and when the pipe enters from the upper side of the shelf unit 100, the pipe transfer unit 200 transfers the pipe to the other side of the upper side of the shelf.

The pipe pressurizing unit 300 pressurizes the pipe being conveyed by the pipe transfer unit 200 in a curved form.

The pipe bending device 10 having the configuration as described above, by pressing the pipe being transported by the roller along the upper side of the box-shaped shelf with a curved plate to bend the pipe to the degree of curvature desired by the user to improve the convenience of bending work This can provide the effect of improving the efficiency of the banding operation.

FIG. 2 is a view showing a pipe conveying part of FIG. 1.

Referring to FIG. 2, the pipe feeder 200 includes a drive motor 210, a first pulley 220, a second pulley 230, a third pulley 240, a first rod 250, and a first feed. The roller 260, the second rod 270 and the second transfer roller 280 are included.

The drive motor 210 is formed of a drive device such as a motor, is installed in the inner space of the shelf part 100, is connected to one side of the first belt b1, and drives the first belt b1 to be driven. 1 The first pulley 220 connected to the other side of the belt b1 is rotated.

The first pulley 220 is connected to the other side of the first belt b1 and rotates according to the driving of the first belt b1, and rotates the second pulley 230 provided on the upper side.

The second pulley 230 is installed on the upper side of the first pulley 220 to rotate together with the rotation of the first pulley 220 to rotate the first rod 250 installed on the upper side, the second belt (b2) It is connected to one side of the) to drive the second belt (b2) to rotate the third pulley (240) connected to the other side of the second belt (b2).

The third pulley 240 is connected to the other side of the second belt b2 so as to be spaced apart from the second pulley 230 so as to rotate in accordance with the driving of the second belt b2 and the second rod 270 installed on the upper side. Rotate).

The first rod 250 is formed to extend from the upper side of the second pulley 230 to the upper side of the shelf part 100, and rotates together in accordance with the rotation of the second pulley 230 so that the first conveyance is installed on the upper side. Rotate the roller 260.

The first conveying roller 260 is installed on the upper part of the first rod 250, that is, exposed to the upper side of the shelf part 100, and forms a seating groove for seating the pipe along the outer circumferential surface thereof. Rotating together according to the rotation of the rod 250 transfers the pipe seated in the seating groove.

The second rod 270 is formed to extend from the upper side of the third pulley 240 to the upper side of the shelf part 100, and is rotated together in accordance with the rotation of the third pulley 240 to transfer the second conveyance installed on the upper side. Rotate the roller 280.

The second conveying roller 280 is installed on the upper part of the second rod 270, that is, is exposed to the upper side of the shelf part 100, and forms a seating groove for seating the pipe along the outer circumferential surface thereof. Rotating together according to the rotation of the rod 270 to convey the pipe seated in the seating groove.

That is, the first conveying roller 260 and the second conveying roller 280 can convey the pipe inserted into each seating groove in one direction or the other one direction while rotating in the same direction.

3 is a view illustrating an embodiment of the pipe pressurization unit of FIG. 1.

Referring to FIG. 3, the pipe pressurizing unit 300 according to an embodiment may include a first guide plate 310, a second guide plate 320, a pressure roller 330, a pressure plate 340, and a pressure lever ( 350).

The first guide plate 310 is formed in a curved shape, one side is connected to be rotated to one side edge of the front end of the shelf part 100, the pressing plate 340 is the rear end direction of the shelf part 100 As it moves to press the pipe to the first conveying roller 260.

The second guide plate 320 is formed in a curved shape, the other side is rotatably connected to the other edge of the front end of the shelf portion 100, the pressing plate 340 of the shelf portion 100 The pipe is pressed by the second feed roller 280 as it is moved in the rearward direction.

That is, the first guide plate 310 and the second guide plate 320 form a curved shape as a whole as a bow shape, and guide the transfer of the pipe bent by the pressure roller 330.

The pressure roller 330 is rotatably installed between the first guide plate 310 and the second guide plate 320, and as the pressure plate 340 is moved in the rear end direction of the shelf part 100. Pressurizes the pipe being transported to the seating groove formed along the outer circumferential surface.

That is, the pressure roller 330 presses the pipe into the spaced space between the first feed roller 260 and the second feed roller 280 so that the pipe is bent.

The pressing plate 340 is connected to the upper front end of the shelf part 100 so as to be movable in the front-rear direction, the other side of the first guide plate 310 is connected to the rear end one side and is installed on the other end of the second end. One side of the guide plate 320 is connected and installed, the pressure roller 330 is installed in the middle of the rear end, it is moved in the front-rear direction by the pressure lever 350 is connected to the front end.

Referring to FIG. 4, the first guide plate 310 or the second guide plate 320 is connected to the upper front end of the shelf part 100 and the springs 311 and 321 so as to return after pressing the pipe. Can be.

The pressure lever 350 is connected to the upper front end of the shelf part 100 so as to be rotatable, and as shown in FIG. 5, when the user pulls and rotates the pressure plate 350 to the rear end direction of the shelf part 100. Move to.

6 is a view illustrating another embodiment of the pipe pressurization unit of FIG. 1.

Referring to FIG. 6, the pipe pressurizing unit 300a according to another embodiment may include a first guide plate 310, a second guide plate 320, a pressure roller 330, a pressure plate 340, and a pressure driving unit ( 400). Here, since the 1st guide plate 310, the 2nd guide plate 320, the press roller 330, and the press plate 340 are the same as the component of FIG. 3, the description is abbreviate | omitted.

The pressure driving unit 400 is installed at the front end of the pressure plate 340 to push or pull the pressure plate 340 in the pipe direction.

In one embodiment, the pressure driver 400 may include a support bar 410, a first cross frame 420, a second cross frame 430, and a frame driver 440.

The support bar 410 is disposed at the front end of the pressure plate 340 to push or pull the pressure plate 340, the first cross frame 420 or the second cross frame 430 connected to the rear end so as to be rotatable. In accordance with the driving of the) is advanced or retracted toward the pressing plate 340.

The first intersecting frame 420 is connected to the rear end of the support bar 410 so as to be rotatable, and the front end of the first cross frame 420 is rotatably connected to the other side of the frame driver 440. Is driven.

The second cross frame 430 is connected to the rear end of the support bar 410 so as to be rotatable, and cross connects the first cross frame 420 with an "X" shape.

The frame drive unit 440 is spaced apart from the front end of the support bar 410, the front end of the first cross frame 420 or the second cross frame 430 is rotatably connected to one side and the other end of the rear end, The front end is rotatably connected to one side of the frame driver 440, and the front end of the first cross frame 420 and the second cross frame 430 is adjusted by being driven by the frame driver 440.

Referring to FIG. 7, the frame driver 440 may include a hollow groove 443 having a pivoting portion 442 connected to each front end at a portion where the first cross frame 420 or the second cross frame 430 is connected. A front end of the cylinder 441, the first cross frame 420 or the second cross frame 430, which is moved along the direction of rotation, is rotatably installed and is driven along the hollow groove 443 by the driving of the cylinder 441. The rotating part 442 may include a hollow groove 443 that forms a space for the moving part 442 to move.

That is, as shown in FIG. 8, the frame driver 440 may freely adjust a distance from another frame in response to the rotatable part 442 connected to each frame to be rotatable along the hollow groove 443. It can be.

In one embodiment, the frame driver 440 pushes the support bar 410 toward the pressing plate 340 as the front ends of the first cross frame 420 and the second cross frame 430 get closer to each other, As the front ends of the first cross frame 420 and the second cross frame 430 move away from each other, the support bar 410 may be pulled from the pressing plate 340.

That is, according to the driving of the first cross frame 420 and the second cross frame 430 by the frame driver 440, the driving is performed as the movement of the scissors to adjust the distance between the frame driver 440 and the support bar 410. It can be.

As illustrated in FIG. 8, the pressure driver 400 having the configuration as described above is installed at both rear ends of the frame driver 440 to prevent the support bar 410 and the frame driver 440 from being impacted. It may further include an elastic support 500.

9 is a view showing the elastic support of FIG.

Referring to FIG. 9, the elastic support part 500 includes a support frame 540, four support plates 510, four pairs of support frames 520, and a support pillar 530.

The support frame 540 is supported by the support plate 510 installed at the lower side, and when the support bar 410 approaches, the support bar 410 is supported by the elastic force.

The supporting plate 510 supports the supporting frame 540 seated on the upper side and is supported by the supporting pillar 530 by the supporting frame 520 connected to the lower side.

That is, the supporting plate 510 seats the supporting frame 540 on the upper side thereof, and in response to the vibration or shock transmitted from the supporting frame 540, the supporting plate 510 is oriented in the horizontal direction (ie, the first frame 521a). Alternatively, vibration or shock may be attenuated by being absorbed by the support frame 520 sliding in the up and down direction (ie, the second frame 521b).

In addition, the present invention is formed by varying the length of the first frame (521a) or the second frame (521b), to overcome the limitations of the existing elastic body that can reduce the impact by simply adjusting the height in the vertical direction The support position by the plate 510 can be freely adjusted not only in the vertical direction but also in the left and right directions.

The support frame 520 is connected to rotatably two frames of the first frame 521a and the second frame 521b at each lower portion of the four support plates 510 to support the plate 510. As described above, the support position of the support frame 540 by the plate 510 is determined by adjusting the length of the first frame 521a or the second frame 521b.

At this time, the upper part of the first frame 521a and the second frame 521b is connected to the lower part of the support plate 510, and the lower part of the first frame 521a is rotated on the upper side of the support column 530. The lower surface of the second frame 521b is connected and installed to enable horizontal sliding movement, and the lower side of the second frame 521b is connected to one side of the support pillar 530 so as to allow rotational and vertical sliding movement.

That is, the first frame 521a or the second frame 521b may be subjected to vibration or shock transmitted from the support plate 510 through a pivoting or sliding movement by elastic force on the upper surface or one side of the support pillar 530. The support pillar 530 is transferred.

The support pillar 530 is formed in the shape of a square pillar, and the lower portion of the first frame 521a is connected to the upper side so as to be rotated and horizontally slidably moved, and the lower portion of the second frame 521b is one side. It is connected to the rotational and vertical sliding movement in the installation, and the elastic force (ie, the cross-elastic portion 533 or vertical elastic portion 535) during the sliding movement of the first frame (521a) or the second frame (521b) Absorbs vibrations or shocks through.

Each of the supporting plate 510 or the supporting frame 520 is driven by the same method as the symmetrical structure of each other, and the contents described with respect to the one supporting plate 510 or the supporting frame 520 as described above are described. The same may be applied to the other support plate 510 or the other support frame 520, the description thereof will be omitted.

In addition, the elastic support 500 having the configuration as described above, can also be formed in a vertical symmetrical structure, in the case of Figure 8 is shown that each configuration is formed only on the upper portion of the support pillar 530 The configuration associated with four support plates 510 and four pairs of support frames 520 as one would be equally applicable to the bottom of the support pillars 530.

The elastic support 500 having the above-described configuration supports the support bar 410 by using elastic force, thereby preventing the support bar 410 from colliding with the frame driver 440, thereby improving durability of the device. Can be improved.

10 and 11 illustrate the support pillar of FIG. 9.

Referring to FIG. 10, the support pillar 530 includes a pillar body 531, a cross groove 532, a cross elastic portion 533, four vertical grooves 534 (see FIG. 9), and four vertical elastic portions. 535 (see FIG. 13).

The pillar body 531 is formed in the shape of a square pillar, a cross groove 532 is formed on the upper portion, the vertical groove 534 is formed on each side.

The cross grooves 532 are recessed and formed in the upper portion of the pillar body 531 in a "+" shape, and a cross elastic portion 533 is inserted into the inner space.

The cross resilient portion 533 is formed in a shape corresponding to the shape of the cross groove 532 and is inserted into the cross groove 532, so that the lower side of the first frame 521a is rotatable on the upper ends of the four branches. It is connected and installed to absorb the vibration or shock transmitted from the first frame 521a by using the elastic force to attenuate the vibration or shock.

The vertical groove 534 is formed in each of the surface of the pillar body 531 in the vertical direction, the vertical elastic portion 535 is inserted into the interior space.

The vertical elastic portion 535 is formed in a shape corresponding to the shape of the vertical groove 534 is inserted into the vertical groove 534, the lower side of the second frame 521b is connected to the upper outer side so as to be rotatable and elastic force By absorbing the vibration or shock transmitted from the second frame 521b to reduce the vibration or shock.

FIG. 12 is a view showing the cross elastic part of FIG. 10.

Referring to FIG. 12, the cross elastic part 533 includes a cross case part 5313, an upper support part 5332, four upper elastic parts 5333, four upper elastic support parts 5340, and four upper connecting links. A part 5335 is included.

The cross case portion 5313 has an inner space formed in an empty " + " shape and is inserted into the cross groove 532, and includes an upper support portion 5332, four upper elastic portions 5333, and four which are described later in the inner space. Top elastic support parts 5340 are installed.

At this time, the length of each branch of the cross case portion 5311 is formed to be shorter than the length of each branch of the cross groove 532, as shown in Figure 10, the upper portion in the space formed on the outside of the cross case portion (5331) The connecting link portion 5335 may be disposed and may form a space for sliding movement.

The upper support part 5332 is formed of a cube, and is disposed at the center of the cross case part 5311, so that the upper elastic part 5333 is disposed outside each of the four surfaces, and supports the upper elastic part 5333. do.

The upper elastic part 5333 is disposed on each side surface of the upper support part 5332 to support the upper elastic support part 5340 by elastic force, thereby absorbing vibrations or shocks transmitted from the upper elastic support part 5344.

The upper elastic support part 5340 is disposed at each end of each branch of the internal space of the cross case part 5313, is supported by the elastic force of the upper elastic part 5333, and is provided between the upper connection link parts 5335. The upper connecting link portion 5335 is supported by the support bar 5336.

The upper link link portion 5335 is disposed at each end of each branch of the cross groove 532, and is provided between the side of the cross case portion 5313 and the support bar 5336 provided between the upper elastic support portion 5340. It is maintained at a predetermined interval by a), and the lower side of the first frame 521a is connected to the upper side so as to be rotatable, and each branch of the cross groove 532 meets in accordance with the vertical movement of the plate 510. Sliding along the groove of the cross groove 532 in the center direction.

FIG. 13 is a view illustrating the vertical elastic part of FIG. 11.

Referring to FIG. 13, the vertical elastic part 535 includes a vertical case part 5331, a side support part 5332, a side elastic part 5435, a side elastic support part 5344, and a side connection link part 5345. do.

The vertical case portion 5331 is formed in a shape corresponding to the shape of the vertical groove 534 in which the inner space is empty, and the side support portion 5332, the side elastic portion 5431, and the side elastic support portion 5344 are formed from the lower side of the inner space. ) Are installed in order.

The side support part 5332 is formed of a cube, is disposed in a lower space of the vertical case part 5331, and a side elastic part 5435 is disposed on the upper side to support the side elastic part 5435.

The side elastic part 5343 is disposed above the side support part 5332, and supports the side elastic support part 5344 disposed above by the elastic force, thereby preventing vibration, shock, and the like transmitted from the side elastic support part 5344. Will be absorbed.

The side elastic support part 5344 is disposed above the inner space of the vertical case part 5331, is supported by the elastic force of the side elastic part 5435, and is provided between the side connecting link parts 5345. It supports the side link link portion 5345 by.

The side link link portion 5345 is disposed at an upper end of the vertical groove 534 and is provided between a lower side facing the vertical case portion 5331 and an upper side of the side elastic support portion 5344. It is maintained at a predetermined interval by a), and the lower side of the second frame 521b is connected to the outer side so as to be rotatable, and slides along the groove of the vertical groove 534 in the lower direction of the vertical groove 534. .

Pipe bending device 10 according to another embodiment of the present invention, when a crack occurs in the structure may further include a composition for repairing the building structure including an acrylic binder for filling and repairing where the crack occurred. .

Here, the structure, the shelf portion 100 may correspond to this, but is not limited thereto, and each configuration constituting the present invention may correspond to this.

The present inventors found that there is no composition exhibiting a satisfactory effect among the compositions having improved water resistance, water resistance, and crack resistance in a composition for repairing a conventionally existing building structure. The inventors have invented a composition which exhibits a satisfactory effect of water resistance, water resistance and crack resistance.

In the present invention, the acrylic binder may be an acrylic ester copolymer. The acrylic ester copolymer may be an acrylic ester copolymer having a CAS number of 30445-28-4. The present inventors are exploring various compounds that can be added to the composition for repairing building structures, the composition that can achieve both the water resistance and crack resistance that is an object of the present invention to solve when the composition comprises the acrylic ester copolymer Confirmed.

In the present invention, the composition may include 10 to 50 parts by weight of the acrylic binder, preferably 15 to 40 parts by weight, and more preferably 20 to 30 parts by weight.

The composition of the present invention may further include, in particular, EVA binder, butyl cellosolve, rosin, texanol and propylene glycol in order to achieve particularly waterproof and water resistant among the problems to be solved by the present invention. .

In the present invention, the EVA binder is preferably ethylene vinyl acetate, and the CAS number may be a compound having 24937-78-8.

The butyl cellosolve in the present invention may be a compound having CAS number 111-76-2.

In the present invention, the rosin refers to a natural resin obtained by distilling rosin, and any type of rosin may be included as a constitution for solving the problem of the present invention.

In the present invention, the texanol (TEXANOL) may be a compound having CAS number 25265-77-4.

In the present invention, the propylene glycol may be a compound having CAS No. 57-55-6.

The inventors have found that the effect of water resistance is particularly improved when EVA binder, butyl cellosolve, rosin, texanol and propylene glycol are further included as a composition of a building structure repair composition including an acrylic binder. .

Specifically, the composition is 0.01 to 10 parts by weight of EVA binder, 0.01 to 5 parts by weight of butyl cellosolve, 0.01 to 5 parts by weight of rosin, 0.01 to 5 parts by weight of texanol and 0.01 to 3 parts by weight of propylene glycol. It may include.

More specifically, the inventors confirmed that the effect of water resistance is remarkably improved when the composition further includes 2-amino-2-methyl-1-propanol and 2-methylamino-2-methyl-1-propanol. It was. That is, EVA binder, butyl cellosolve, rosin, texanol and propylene glycol, and 2-amino-2-methyl-1-propanol and 2-methylamino in the building repair composition containing the acrylic binder. When the 2-methyl-1-propanol is further included, the present invention has been completed through improved water resistance and water resistance.

In the present invention, the composition may include the 2-amino-2-methyl-1-propanol and 2-methylamino-2-methyl-1-propanol in a weight ratio of 15 to 20: 1, preferably 16 to 20 It may be included in a weight ratio of 1: 1, and more preferably in a weight ratio of 17 to 20: 1.

The 2-amino-2-methyl-1-propanol and 2-methylamino-2-methyl-1-propanol may be included in the composition in an amount of 0.1 to 5 parts by weight.

The present inventors confirmed that the composition can improve water resistance, particularly among the problems to be achieved by the present invention.

In addition, the composition for repairing the building structure containing the acrylic binder may further comprise ethylene glycol, butyl cellosolve (butyl cellosolve), calcium carbonate, titanium dioxide and water.

If the above-described composition has an excellent waterproof and water resistance effect, the present composition is characterized in that the crack resistance is improved. The butyl cellosolve is as described above.

In the present invention, the ethylene glycol (ethylene glycol) means a compound having a CAS number 107-21-1.

In the present invention, the calcium carbonate means a compound having a CAS number of 1317-65-3.

In the present invention, the titanium dioxide means a compound having a CAS number of 13463-67-7.

Specifically, the composition is 0.01 to 5 parts by weight of ethylene glycol, 0,01 to 5 parts by weight of butyl cellosolve, 20 to 50 parts by weight of calcium carbonate, 0.01 to 5 parts by weight of titanium dioxide and 0.01 to 10 parts of water It may include parts by weight.

The inventors came to embody the idea in natural extracts while exploring the composition for improving crack resistance. The present inventors confirmed that when the flaxseed slime or flaxseed slime extract is further included in the composition, the effect of crack resistance is significantly improved. That is, when the acrylic repair-containing composition for building repair includes ethylene glycol, butyl cellosolve, calcium carbonate, titanium dioxide and water, and flaxseed slime or flaxseed slime extract, improved crack resistance The present invention was completed through confirmation.

In the present invention, the flax (flax) is a perennial herb of the dicotyledonous rat Rat Asteraceae, the seeds are flat, long oval, yellowish brown.

The flaxseed mucus in the present invention can be prepared through a variety of methods, for example by scraping the mucus from flaxseed using a scraper (scraper) can be prepared flaxseed mucus.

In the present invention, the flaxseed slime extract may be prepared as follows.

1 g of flaxseed was poured into 50 L of purified water, stirred at 25 ° C. for 5 hours, filtered through a 300 mesh filter cloth, and precipitated by addition of the same amount of alcohol, preferably ethanol, to the filtrate, and then Whatman filter paper, for example, Watts. Bay filter paper NO. After filtration using 5 to dry to obtain a white powder form.

Conventionally, various uses are known as the use of flaxseed, but the effect of improving the crack resistance by including them in a composition for repairing building structures as in the present invention has not been known to date, and studies are insignificant.

Specifically, the composition may include 1 to 10 parts by weight of the flaxseed slime or flaxseed slime extract.

In addition, at least one additive selected from a dispersant, an antifoaming agent, an antimicrobial agent, a preservative, and a cryoprotectant within a range that does not impair the basic physical properties of the building structure repair composition.

In addition, the present invention S1) removing the deterioration of the surface of the building structure; And S2) the crack repairing of the structure may be performed by forming a crack repairing film by applying and drying the building structure repairing composition on the upper surface of the building structure from which the deterioration part is removed.

Hereinafter, the configuration of the present invention and its effects through specific examples and comparative examples will be described in more detail. However, this embodiment is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

Material preparation

Information on the main raw materials used in the building structure repair composition for the following Examples and Evaluation Examples is as follows.

1) Acrylic Binder: Acrylic ester copolymer CAS NO 30445-28-4

2) EVA Binder: Ethylene vinyl acetate CAS NO 24937-78-8

3) Butylcellosolve: CAS NO 111-76-2

4) TEXANOL: CAS NO 25265-77-4

5) Propylene glycol: CAS NO 57-55-6

6) ethylene glycol: CAS NO 107-21-1

Calcium carbonate: CAS NO 1317-65-3

8) titanium dioxide: CAS NO 13463-67-7

9) 2-amino-2-methyl-1-propanol: CAS NO 124-68-5

10) 2-methylamino-2-methyl-1-propanol: CAS NO 27646-80-6

11) Flaxseed Mucus

Flaxseed mucus was obtained by scraping mucus from flaxseed using a scraper.

12) Flaxseed Mucus Extract

1 g of flaxseed was poured into 50 L of purified water, stirred at 25 ° C. for 5 hours, filtered through a 300 mesh filter cloth, and precipitated by adding the same amount of ethanol to the filtrate. Filtration using 5 followed by drying yielded about 0.2 g of a white powder.

Example 1

5 parts by weight of EVA binder, 1 part by weight of butyl cellosolve, 0.5 part by weight of rosin, 0.5 part by weight of texanol, 0.1 part by weight of propylene glycol and other thickening aids, with 30 parts by weight of an acrylic binder and stirring at a speed of 600 rpm. After slowly adding a pH adjuster, etc. in order, 50 parts by weight of calcium carbonate was added thereto and stirred at room temperature for 1 hour at a speed of 300 rpm to prepare a composition for repairing building structures.

Example 2

5 parts by weight of EVA binder, 1 part by weight of butyl cellosolve, 0.5 part by weight of rosin, 0.5 part by weight of texanol, 0.1 part by weight of propylene glycol, 1 part by weight with 30 parts by weight of an acrylic binder and stirring at a speed of 600 rpm. 2-amino-2-methyl-1-propanol, 0.06 parts by weight of 2-methylamino-2-methyl-1-propanol and other thickening aids, pH adjusters, etc. were gradually added in order, and then 50 parts by weight of calcium carbonate, a filler, was added. Put and stirred at room temperature for 1 hour at a speed of 300rpm to prepare a composition for building structure repair.

Example 3

Put 30 parts by weight of the acrylic binder into the mixing agitation vessel and stir at a speed of 600 rpm, followed by 1 part by weight of ethylene glycol, 1 part by weight of butyl cellosolve, 0.5 part by weight of titanium dioxide, 5 parts by weight of water and other thickening aids, and pH adjusting agent. After slowly adding as much as 50 parts by weight of a filler calcium carbonate was stirred at room temperature for 1 hour at a speed of 300rpm to prepare a composition for building structure repair.

Example 4

30 parts by weight of an acrylic binder was added to the mixing agitator and 1 part by weight of ethylene glycol, 1 part by weight of butyl cellosolve, 0.5 part by weight of titanium dioxide, 5 parts by weight of water, 5 parts by weight of flaxseed slime and flaxseed slime extract After slowly adding a mixture and other thickening aids, pH regulators and the like in order to add 50 parts by weight of calcium carbonate filler and stirred at room temperature for 1 hour at a speed of 300rpm to prepare a building construction composition.

Evaluation example 1

After the deterioration part of the civil engineering structure was removed, the crack repair film was formed by coating and drying the composition for repairing the building structures of Examples 1 to 4 on the surface. The adhesive strength, crack resistance and slip resistance of the crack repair film thus obtained and the storage stability of the crack repair agent composition were evaluated based on the test method of the KS standard and KSL 1593, and the results are shown in Table 1 below. In addition, in the case of waterproofing, the degree of water absorption inside the crack repair film was evaluated by a five-point scale method. Product X in Table 1 represents a product for repairing the building structure of the building structure of Company B, which is commercially available in Korea, and evaluated it as a comparison target with the compositions of Examples 1 to 4.

TABLE 1

As shown in Table 1, the building structure repair composition of Examples 1 to 4 can be confirmed that the water resistance, water resistance and crack resistance is improved compared to the product X, it is confirmed that there is no problem in storage stability and slip resistance It became. In particular, Examples 1 and 2 in the present invention can be confirmed that the better evaluation in water resistance and water resistance, Examples 3 and 4 can be confirmed that the better evaluation in crack resistance.

In one embodiment, the pressure lever 350 may be attached to the cover (not shown in the drawings for convenience of description) by an adhesive composition having excellent adhesion to the handle portion gripped by the user.

Adhesive composition according to an embodiment of the present invention, the adhesive composition for attaching the cover for attaching the cover to the pressure lever 350, 40 to 80 parts by weight of thermoplastic resin, 5 to 40 parts by weight of tackifying resin, 1 to 5 rosin It includes weight part, plasticizer 1-10 weight part, filler 1-10 weight part, and antioxidant 0.1-1 weight part. The present invention is a hot melt adhesive composition, which is generally manufactured in a state of being bonded between the release agent and the silicone band, removes the release agent when applied to the fabric to perform a press operation to cover the pressure lever (350) attached to the cover Done. Hereinafter, each component will be described in detail.

The thermoplastic resin serves as a main component of the composition to control adhesion and cohesion. If the type includes a vinyl group or a hydroxyl group, the type is not particularly limited, and examples thereof include ethylene vinyl acetate copolymer, polyvinylacetate, polyvinyl alcohol, ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer, and polyurethane. It may be composed of any one or more selected from the group consisting of.

The content of the thermoplastic resin is preferably 40 to 80 parts by weight based on the total composition. If the content is less than 40 parts by weight, the melt viscosity is high and the melt flow index is low, the workability is very poor, if the content is more than 80 parts by weight it is difficult to exert sufficient adhesive force to be applied directly to the fabric.

The tackifier resin is a low molecular weight resin, lowers the melt viscosity to improve workability, improves the initial wettability of adhesion and adhesion of the adhesive on the surface of the adherend, and enables control of the solidification time.

The tackifying resin is not particularly limited in kind, but is preferably a petroleum resin. More specifically, the tackifier resin may be composed of one or more selected from the group consisting of aliphatic hydrocarbon resins, alicyclic hydrocarbon resins, aromatic hydrocarbon resins, aromatic hydrocarbon-modified aliphatic hydrocarbon resins, and hydrogenated hydrocarbon resins.

The aliphatic hydrocarbon resins are commercial products such as Hikorez A-1100, Hikorez A-1100S, Hikorez C-1100, Hikorez R-1100, Hikorez R-1100S, and the like. In addition, alicyclic hydrocarbon resins include hydrocarbon resins containing dicyclopentadiene (DCPD) as monomers, and aromatic hydrocarbon resins are commercially available from Kolon Oil Co., Ltd. of Hikotack P-110S, Hikotack P-120, Hikotack P-120HS, Hikotack P-120S, Hikotack P-140, Hikotack P-140M, Hikotack P-150, Hikotack P-160, Hikotack P-90, Hikotack P-90S, Hirenol PL-1000, Hirenol PL-400. In addition, aromatic hydrocarbon-modified aliphatic hydrocarbon resins include Hikorez T-1080, Hikorez T-1100, etc. of Kolon Oils. Hydrogenated hydrocarbon resins can also be subdivided into hydrogenated aliphatic hydrocarbon resins, hydrogenated aromatic hydrocarbon resins, and the like, and commercially available from Kolon Oil, Sukorez D-300, Sukorez D-390, Sukorez SU-100, Sukorez SU-110, Sukorez SU-120, Sukorez SU-130 and Sukorez SU-90.

The tackifier resin is preferably a hydrocarbon resin having 4 to 10 carbon atoms in the monomer, and specifically, a C5 aliphatic resin, a C9 aromatic resin, a C5 / C9 aliphatic / aromatic copolymer resin, or the like may be used.

In addition, the tackifying resin of the present invention is more preferably characterized in that the hydrocarbon hydrocarbon resin containing dicyclopentadiene as a monomer, commercially available from Sukorez D-300, Sukorez D-390, Kolon Emulsifier (Korea), Sukorez SU-100, Sukorez SU-110, Sukorez SU-120, SukorezSU-130 and Sukorez SU-90.

On the other hand, the adhesive composition of the present invention, in order to minimize the irritation as much as applied to the part directly in contact with the skin, it is preferable to use a mixture of biodegradable hypoallergenic resin in the various petroleum resin described above.

The biodegradable hypoallergenic resin may be prepared by melt-mixing a monomer of a polymer into a biodegradable polymer, and polylactic acid is preferably used as the biodegradable polymer.

The polylactic acid is a polyester synthesized by polycondensation of lactate or ring-opening polymerization of lactide, and has a medium physical property between polyamide and polyethylene terephthalate, and is mainly made of natural vegetable sugar components obtained from potatoes and corn. Biodegradability is high, but generally has high hardness, low elasticity, and poor durability.

The biodegradable polymer is melt-mixed with the same polymer monomer, wherein the biodegradable polymer is partially bonded with the monomer to cause chain breakage, thereby lowering the overall number average molecular weight. As the number average molecular weight falls, the physical properties that can be used as an adhesive are exhibited, and the workability is increased.

With respect to 100 parts by weight of the polylactic acid, the lactic acid monomer may be mixed 20 to 30 parts by weight. When the monomer is mixed in less than 20 parts by weight, the number average molecular weight is high and hard to be used as a pressure-sensitive adhesive, when the monomer exceeds 40 parts by weight migration may occur on the surface and may also be difficult to use as an adhesive.

It is preferable that the mixing ratio of the petroleum resin and the biodegradable hypoallergenic resin is 1 to 2: 1 (w / w). When the mixing ratio of the petroleum resin is too high, the biodegradable hypoallergenic effect is less likely to occur. If the mixing ratio is too high, economic efficiency may be lowered and the overall adhesive effect may be lowered.

In addition, the content of the tackifying resin is preferably 5 to 40 parts by weight relative to the total composition. If the content is less than 5 parts by weight, the effect of lowering the melt viscosity due to the addition of the tackifying resin is insufficient, and there is a fear that the increase in the melt flow index is not so large that the workability may not be satisfactorily reached, and the content is more than 30 parts by weight. If the melt flow index increase rate due to the excess of the tackifier resin is not large, the economical efficiency is lowered and the content of the thermoplastic polymer is relatively reduced, thereby reducing the overall physical properties of the composition.

The rosin acts to improve the overall adhesion of the adhesive composition and is harmless to the human body and acts as a natural preservative. The content of the rosin is preferably 1 to 5 parts by weight based on the total composition. If the content is less than 1 part by weight, it is difficult to obtain an effect of improving the adhesive strength, and if the content exceeds 5 parts by weight, there is a problem in that the adhesion is increased during processing, making it difficult to process the product.

The plasticizer is used to impart flexibility and adhesion to the polymer, and the type of plasticizer according to the present invention is not particularly limited, and for example, sorbitol, ethylene glycol, glycerin, glycerin diacetate, and pentaerythritol It may consist of one or more selected from the group consisting of.

The amount of the plasticizer is preferably 1 to 10 parts by weight based on the total composition. If the content is less than 1 part by weight, the effect of the addition of the plasticizer is insignificant. If the content is more than 10 parts by weight, the economical efficiency may be reduced by excessive use of the plasticizer, and there is a concern that the overall physical properties of the adhesive may be lowered.

The filler is used to control the reinforcement and flow of the composition. The type of filler is not particularly limited, and for example, calcium carbonate, clay, bentonite, calcium stearate or the like can be used.

On the other hand, the adhesive composition of the present invention is applied to the pressure lever 350 or the attachment surface of the cover, the odor and bacteria are likely to occur in the application environment. Therefore, in order to reduce the odor and bacteria generation while controlling the reinforcement and flow of the adhesive composition, it is preferable to use a mixture of stone powder and pulp powder as a filler. Stone powder can achieve high strength without using additives due to the compactness of the particles, and the cracking of the adhesive hardly occurs even when the temperature change is large due to low volumetric strain according to the surrounding environment.

The stone powder may be used in the form of powder of various rocks such as loess, marble, ganban stone, granite, jadeite, preferably characterized in that the loess has various functions such as antibacterial, anti-fungal, UV emission.

The pulp powder serves to agglomerate the stone powders while sucking the liquid components, to improve the miscibility and improve the cohesion between the components. At this time, the stone powder and the pulp powder is preferably mixed in a ratio of about 7: 3 to 8: 2 (w / w).

The content of the filler is preferably 1 to 10 parts by weight based on the total composition. If the content is less than 1 part by weight, the effect of adding the filler is insignificant, and if the content is more than 10 parts by weight, there is a concern that the overall physical properties of the adhesive may be lowered.

The antioxidant is intended to improve the change in viscosity, yellowing, deterioration of adhesion and degradation of durability due to oxidation and decomposition, and the type thereof is not particularly limited, and specifically, phenols, aromatic amines, citric acid, or ascorbic acid may be used. Can be.

The content of the antioxidant is preferably 0.1 to 1 parts by weight relative to the total composition. If the content is less than 0.1 part by weight, the effect of the addition of the antioxidant is insignificant, and if the content exceeds 1 part by weight, not only the economical efficiency of the adhesive is lowered but also the overall physical properties may be lowered.

On the other hand, the adhesive composition of the present invention may further include a nano-silica that can be improved evenly distributed by the pressure lever 350 or the attachment surface of the cover. At this time, the content of the nano silica is preferably 0.1 to 5 parts by weight, and the size of the nano silica (primary particles) is preferably 100 nm or less.

If the content of the nano-silica is less than 0.1 parts by weight, the effect of the addition of nano-silica is insignificant, and if the content exceeds 5 parts by weight, not only the adhesive force is lowered but also a bad phenomenon that blooming (blooming) occurs on the surface of the adhesive over time May occur.

Hereinafter, the configuration of the present invention and its effects through specific examples and comparative examples will be described in more detail. However, this embodiment is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

Example 1

60 parts by weight of ethylene-vinylacetate copolymer, 25 parts by weight of Sukorez D-300, 3 parts by weight of rosin, 5 parts by weight of ethylene glycol, 4 parts by weight of ocherite, 2 parts by weight of pulp powder and 1 part by weight of ascorbic acid. Melt kneading at ° C to prepare an adhesive composition and then molded into pellets. At this time, the biodegradable hypoallergenic resin was prepared by melt-mixing 2.5 parts by weight of lactic acid monomer to 100 parts by weight of polylactic acid at 160 ° C. for 5 minutes.

Example 2

60 parts by weight of ethylene-vinylacetate copolymer, 15 parts by weight of Sukorez D-300, 10 parts by weight of biodegradable hypoallergenic resin, 3 parts by weight of rosin, 5 parts by weight of ethylene glycol, 4 parts by weight of loess, 2 parts by weight of pulp powder and ascorb 1 part by weight of acid was mixed and melt kneaded at 170 to 180 ° C. to prepare an adhesive composition, and then molded into pellets. At this time, the biodegradable hypoallergenic resin was prepared by melt-mixing 2.5 parts by weight of lactic acid monomer to 100 parts by weight of polylactic acid at 160 ° C. for 5 minutes.

Example 3

Except for adding 1 part by weight of nanosilica, it was prepared in the same manner as in Example 1, and was made as Example 3.

[Comparative Example]

It was used after removing the backing paper from the conventional TPU hot melt film.

Experimental Example

(1) Mesh adhesive strength

In order to evaluate the mesh adhesive strength of the hot melt adhesive, the adhesive pellet quantified between the pressure lever 350 and the cover was melt-coated at 170 ° C., and press work was performed at 130 ° C. for 30 seconds at a pressure of 60 kgf / cm 2. It progressed and measured the mesh adhesive strength (kgf / cm <2>).

(2) Melt Flow Index

The heating cylinder of the melt flow rate meter was filled with a pellet type adhesive and melted at 160 ° C. for about 5 minutes. The weight (g) of the adhesive passed through the cylinder for 10 minutes was measured by putting a weight of 3 kg.

As can be seen from the table, it was confirmed that the adhesive composition of the present invention has improved adhesion and flow index than the existing product, even when using a biodegradable hypoallergenic resin it was confirmed that the adhesion and flow index does not fall significantly. Also, when the nano-silica is mixed, the flow index can be seen to increase significantly.

The above-described embodiments are for illustrative purposes, and those of ordinary skill in the art to which the above-described embodiments belong may easily change to other specific forms without changing the technical spirit or essential features of the above-described embodiments. I can understand. Therefore, it is to be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected by the present specification is represented by the following claims rather than the above description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

10: pipe banding device
100: shelf
110: feed roller
200: pipe conveying unit
210: drive motor
220: first pulley
230: second pulley
240: third pulley
250: first load
260: first feed roller
270: second load
280: second feed roller
300: pipe pressurization
310: first guide plate
320: second guide plate
330: pressure roller
340: pressure plate
350: pressure lever
400: pressure drive unit
500: elastic support

Claims (2)

Shelf portion forming a box form by a plurality of frames;
A pipe transfer unit connected to the shelf and configured to transfer the pipe from the upper side of the shelf to the other side of the shelf; And
It includes a pipe pressurizing unit for pressurizing the pipe being conveyed by the pipe conveying unit in a curved form,
The shelf part has a feed roller on one side and the other side to reduce friction with the pipe,
The pipe transfer unit is connected to one side of the first belt drive motor for driving the first belt; A first pulley connected to the other side of the first belt and rotating according to the driving of the first belt; A second pulley installed on an upper side of the first pulley to rotate together with the rotation of the first pulley and connected to one side of a second belt to drive the second belt; A third pulley installed on the other side of the second belt to be spaced apart from the second pulley and rotated according to the driving of the second belt; A first rod extending from the upper side of the second pulley to be exposed to the upper side of the shelf part; A first transfer roller installed on an upper portion of the first rod and forming a seating groove for seating the pipe along an outer circumferential surface thereof, and rotating together with the rotation of the first rod to transport the pipe seated in the seating groove; ; A second rod extending from the upper side of the third pulley to be exposed to the upper side of the shelf part; And a second conveyance installed at an upper portion of the second rod and forming a seating groove for seating the pipe along an outer circumferential surface thereof, and rotating together with the rotation of the second rod to transport the pipe seated in the seating groove. A roller,
The pipe pressurization portion, one side is installed rotatably connected to one edge of the front end of the shelf portion, the first guide plate for pressing the pipe with the first transfer roller; A second guide plate on which the other side is rotatably connected to the other edge of the front end of the shelf and presses a pipe with the second feed roller; A pressure roller which is rotatably connected between the first guide plate and the second guide plate and pressurizes the pipe being transported to a seating groove formed along an outer circumferential surface thereof; It is connected to the front front of the shelf so as to be movable in the front-rear direction, the other side of the first guide plate is installed on one side of the rear end is connected, the other side of the second guide plate is installed on the other side of the rear end, the middle of the rear end A pressure plate to which the pressure roller is installed; And a pressure lever rotatably connected to an upper front end of the shelf part and configured to move the pressure plate toward the rear end of the shelf part by pulling and rotating the user.
The first guide plate or the second guide plate is connected to the upper front end of the shelf and the spring so as to return after pressing the pipe,
The pipe pressurizing portion further includes a pressurizing driving part installed at a front end of the pressurizing plate to push or pull the pressurizing plate in a pipe direction.
The pressure drive unit, the support bar is provided in front of the pressure plate for pushing or pulling the pressure plate; A first cross frame having a rear end connected to one side of the support bar to be rotatable; A second cross frame having a rear end rotatably connected to the other side of the support bar and cross-connected with the first cross frame in the form of "X"; And spaced apart at a front end of the support bar, and connected to a rear end of the first cross frame and a front end of the second cross frame so as to be rotatable, and connected to the first cross frame and the second cross frame. It includes a frame drive for adjusting the shear gap,
The frame driving unit pushes the support bar toward the pressing plate as the front ends of the first cross frame and the second cross frame come closer to each other, and the front ends of the first cross frame and the second cross frame cross each other. A pipe banding device, which pulls the support bar as it moves away.

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