KR101957806B1 - Tapping device - Google Patents

Abstract

The present invention relates to a tapping device, which is characterized by comprising: a rotation adjustment module of which one end is rotationally coupled to a floor surface, and which is rotated around a rotary shaft orthogonal to the floor surface; a length adjustment module of which one end is rotationally coupled to the other end of the rotation adjustment module, and which can adjust a length in a radial direction around the other end of the rotation adjustment module; and a tapping unit of which one end is coupled to the other end of the length adjustment module, and which includes a rotary burr capable of perforating and tapping a material.

Description

Tapping device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tapping device for tapping an object,

In general, the operation of forming a thread in the inner diameter of a hole drilled and drilled in a cylindrical shape on an object is referred to as a tapping operation. The thread formed on the inner diameter of the object is called a tap.

In the tapping operation procedure, a hole is formed by a process such as piercing at a tap forming position of a target object, and then an operator manually performs a work using a hand tool, or a thread is formed in a hole by using a shelf device for forming a tab.

The content of the conventional tapping device is described in detail in Korean Patent Publication No. 10-0853562.

On the other hand, in the conventional tapping devices, the tapping device is fixed and the object is moved to the tapping device. However, there is a problem that it is inconvenient to position the tapping object on the tapping device when producing a small amount of tapping object.

It is an object of the present invention to provide a tapping device capable of freely moving a portion of a tapping device which is in direct contact with a tapping object.

In order to solve the above-described problems, one embodiment of the present invention relates to a rotation control module in which one end is rotatably coupled to a floor surface and is rotated based on a rotation axis perpendicular to the bottom surface, A length adjusting module rotatably coupled to the other end of the length adjusting module and having a length adjustable in a radial direction with respect to the other end of the rotation adjusting module, And a tapping part including a burr. The device has an effect of facilitating direction adjustment and length adjustment of the device.

The rotation control module may further include a first support extending in the vertical direction from the bottom surface, a rotation center bar rotatably coupled with the first support, And a rotation support bar provided at the other end of the extension bar and to which the length adjustment module is rotatably coupled. The length adjustment module includes a second support member rotatably coupled to the rotation support bar, A first joint that is fixedly coupled to the second support, two first connection bars, one end of which pivotally hinges to the first joint, a center joint that pivotally hinges to the other end of the second connection bar, Two second connecting bars, one end of each of which pivotally hinges to the center joint, and the other of the two connecting bars of the second connecting bar, Wherein the tapping portion includes a center body defining a body, an extension body extending to a side of the center body, and a rotating burr provided on the extension body and rotatably provided, Wherein the double hinge portion includes a center plate defining a body, a first rotation connecting portion rotatably coupled to one end of the center plate, a second rotation connecting portion between the other end of the center plate, A first plate rotatably coupled to the first rotation connection and fixedly coupled to the second joint, and a second plate rotatably coupled to the second rotation connection, And a second plate fixedly coupled to the body. The tapping operation is effective with high durability.

One embodiment of the present invention has the effect of allowing a portion of the tapping device, which is in direct contact with the tapping object, to move freely at the position of the object.

In addition, an embodiment of the present invention has an effect that tapping can be performed on a tapping object at various angles regardless of the position of the object.

In addition, the embodiment of the present invention has an effect of easily absorbing vibration even in an external impact.

1 is a perspective view illustrating a tapping apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a state where the tapping portion of the tapping device of FIG. 1 is moved a predetermined distance.
3 is a side view illustrating a tapping portion and a double hinge portion according to an embodiment of the present invention.
4 is a side view showing a detailed configuration of a tapping device according to an embodiment of the present invention.
5 is a perspective view illustrating a tapping apparatus according to another embodiment of the present invention.
6 is a perspective view illustrating a vibration attenuator according to an embodiment of the present invention.
7 is a perspective view showing the detailed structure of the vibration damping portion.
Fig. 8 is an algorithm in which a manufacturing method for producing a plastic sheet is shown.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the meantime, the structure of the apparatus described below is only for explaining the embodiment of the present invention, and is not intended to limit the scope of the present invention, and the same reference numerals used throughout the specification denote like elements.

1 and 2, the overall configuration and operation of the tapping apparatus 1 according to an embodiment of the present invention will be described.

A tapping device 1 according to an embodiment of the present invention includes a rotation control module 100 having one end rotatably coupled to a bottom surface 10 and rotated based on a rotation axis perpendicular to the bottom surface 10, A length adjusting module 200 having one end rotatably coupled to the other end of the rotation adjusting module 100 and capable of adjusting the length in the radial direction based on the other end of the rotation adjusting module 100, And a rotary burr 434 coupled to the other end of the material and capable of perforating and tapping the material.

The tapping section 400 is adjustable in angle with respect to a rotation axis perpendicular to the bottom surface 10 by the rotation adjustment module 100 and the other end of the rotation adjustment module 100 is adjusted by the length adjustment module 200 It is possible to adjust the length in the radial direction.

The length adjusting module 200 is rotatably coupled to the other end of the rotation adjusting module 100 so that the tapping part 400 can be angularly adjusted at two points (one end and the other end of the rotation adjusting module 100) It is possible.

Therefore, it is very easy to operate the angle of the tapping part 400, and the maximum distance from one end of the rotation adjusting module 100 to the tapping part 400 can be further increased as compared with when the angle is adjusted only at one point.

In addition, when the tapping device 1 is not used, since the angle can be adjusted simultaneously with respect to two points, the rotation adjustment module 100 and the length adjustment module 200 are positioned so as to be in contact with each other.

The greatest effect is that all of the tapping objects 20 located within a certain range can be tapped because the range of movement of the tapping part 400 is expanded.

The rotation adjustment module 100 includes a first support 120 that extends vertically from the bottom surface 10 and is fixedly coupled to the bottom surface 10, a second support 120 that is rotatably coupled to the first support 120, A bar 110, an extension bar 130 extending in the lateral direction of the rotation center bar 110, and a rotation support bar 130 provided at the other end of the extension bar 130 and rotatably coupled to the length adjustment module 200 140).

The rotation support bar 140 is rotatable 360 degrees with respect to the rotation center bar 110 and the first support 120. However, the rotation angle of the rotation support bar 140 may be limited to within a predetermined angle by a separate device (stopper or the like).

The rotation control module 100 may further include a rotation coupling unit 150 for controlling the rotation resistance of the rotation center bar 110 with respect to the first support 120. Uniform contact between the tapping part 400 and the tapping object may not be possible if the rotation center bar 110 is excessively rotated about the first support 120. [ In contrast, when the rotation center bar 110 has a strong rotational resistance with respect to the first support 120, it is very difficult to move the tapping part 400 to the tapping object. Also, the most suitable rotation resistance is different for each person. That is, the rotation coupling unit 150 corresponds to a configuration capable of reflecting such a request.

Specifically, the rotating coupling part 150 is provided on the upper part of the first supporting part 120 and is rotatable with reference to a rotating shaft perpendicular to the bottom surface 10. The rotation resistance of the rotation center bar 110 with respect to the first support base 120 can be adjusted according to the rotation direction of the rotation coupling unit 150. [ For example, when the rotary coupling unit 150 is rotated in the clockwise direction, the rotary resistance will be higher and when the rotary coupling unit 150 is rotated in the counterclockwise direction, the rotary resistance will be lowered.

Various methods for mechanically controlling the rotational resistance have been disclosed. In one embodiment of the present invention, the distance between both ends of the first support base 120 can be adjusted through the rotation of the rotation coupling unit 150. Both ends of the rotation center bar 110 can be pressed or relaxed as both ends of the first support base 120 approach and separate from each other. However, the present invention is not limited thereto, and various methods capable of mechanically controlling the rotational resistance can be applied.

The length adjustment module 200 includes a second support 210 rotatably coupled to the rotation support bar 140, a first joint 220 fixedly coupled to the second support 210, A center joint 240 pivotably hinged to the other ends of the two first connection bars 230, and a pair of first connection bars 230 pivotably coupled to the center joint 240, And a second joint 260 pivotably hinged to the other ends of the two second connecting bars 250. The second connecting bar 250 is pivotably hinged to the first connecting bar 250 and the second connecting bar 250,

Both ends of the second support table 210 are rotatably coupled to the rotation support bar 140. The second support table 210 may be rotatable 360 degrees with respect to the rotation support bar 140. However, the second support table 210 may be rotatable only within a predetermined angle range with respect to the rotation support bar 140 according to the width of the floor surface 10 or the width of the work space. In this case, a structure such as a stopper (not shown) may be applied between the second support table 210 and the rotation support bar 140.

The first joint 220 is configured such that the two first connection bars 230 are rotatable relative to the first joint 220. The joint bar 221 is inserted into the hole provided in the first joint 220 in a state where one end of the two first connection bars 230 is inserted into the first joint 220. As a result, the two first connection bars 230 are rotatably coupled with respect to the joint bars 221 individually fastened.

One end of the two first connection bars 230 is rotatably pivotally coupled to the first joint 220 and the other end of the two first connection bars 230 is rotatably pivotally coupled to the center joint 240 . On the other hand, only one first connection bar 230 may be provided, and three or more first connection bars 230 may be provided. However, when two or more first connection bars 230 are used, the durability of the entire device is increased and a resistance is adjusted to the length of the length adjustment module 200 with respect to the rotation support bar 140, Control is possible.

The center joint 240 is rotatably coupled to the other end of the two first connection bars 230 and one end of the two second connection bars 250. One end of the two second connecting bars 250 and the other end of the two first connecting bars 230 are inserted into the center joint 240 and the joint bar 241 is inserted into the hole provided in the center joint 240 Thereby being fastened to each other. As a result, the two first connecting bars 230 and the two second connecting bars 250 are rotatably coupled with respect to the joint bars 241 fastened separately.

One end of the two second connection bars 250 is rotatably pivotally coupled to the center joint 240 and the other end of the two second connection bars 250 is pivotally coupled to the second joint 260 . On the other hand, the second connection bar 250 may be provided only as one as the first connection bar 230, or may have three or more.

The second joint 260 is rotatably coupled to the other end of the two second connecting bars 250. The other ends of the two second connection bars 250 are rotatably pivotally coupled to the second joint 260 through the joint bars 261.

Meanwhile, the second joint 260 may be directly fixedly coupled to the tapping part 400 or may be indirectly fixedly coupled to the tapping part 400 via the double hinge part 500.

Since the length adjusting module 200 has three joints, the length of the entire length of the length adjusting module 200 in the radial direction extending from the rotary support bar 140 can be increased. Also, when the tapping device 1 is not used, the first connection bar 230 and the second connection bar 250 can be contracted so as to be in contact with each other.

The tapping part 400 includes a center body 410 which forms a body and one side of which is fixedly coupled to the second joint 260 or the double hinge part 500, an extension body 420 extending from the other side of the center body 410 And a tapping device 430 including a rotating bar 434 provided on the extension body 420 and in direct contact with the tapping object.

1 and 2 show the length adjusting module 200 extended from the rotation adjusting module 100 by a predetermined distance. The first connecting bar 230 and the second connecting bar 250 rotate at a predetermined angle with respect to the first joint 220, the center joint 240 and the second joint 260, respectively, Is extended by a predetermined distance.

3, a detailed configuration of the tapping device 430 and a detailed configuration of the double hinge unit 500 will be described.

The tapping device 430 includes an upper body 431 extending to the upper end of the extension body 420, a lower end body 432 extending to the lower end of the extension body 420, A rotary burr 434 provided at an end of the rotary drive part 433 and rotatably provided by the rotary drive part 433 and a rotary burr 434 provided at the end of the upper body 431, And a connection line 435 which is provided with a connection terminal.

The lower body 432 is configured to provide a space in which the rotation driving unit 433 can be rotatably installed and to supply the refrigerant. A detailed description thereof will be given later.

The rotation drive unit 433 rotates the rotary burr 434. Electricity supplied from the connection line 435 is used to operate a drive motor (not shown) provided therein.

The double hinge part 500 is located between the second joint 260 and the center body 410.

Specifically, the double hinge unit 500 includes a central plate 510 forming a body, a first rotation connection 520 rotatably coupled to one end of the center plate 510, A first plate 540 rotatably coupled to the first rotation connection 520 and fixedly coupled to the second joint 260 and a second rotation connection 530 And a second plate 550 rotatably coupled to the center body 410 and fixedly coupled to the center body 410.

The center plate 510 is rotatably supported with respect to the first plate 540 with respect to the first rotation connection portion 520 and the second plate 550 is rotatably supported by the second rotation connection portion 530 As shown in FIG. 3 shows that the second plate 550 is rotated at a predetermined angle with respect to the center plate 510.

Only the center plate 510 rotates with respect to the first plate 540 or only the second plate 550 rotates with respect to the center plate 510 or the center plate 510 and the second plate 550 simultaneously rotate .

The double hinge unit 500 can freely deform the angle formed by the extended line of the rotary burr 434 with the bottom surface 10. The tabs inclined at a predetermined angle with respect to the tapping object 20 can be formed through the double hinge portion 500.

A detailed structure of the tapping device 430 will be described with reference to FIG.

The lower body 432 is composed of a peripheral groove 432a for guiding the groove connection portion 432b to rotate around the lower end body 432 and a microtubule 432c connected to the groove connection portion 432b . The groove connecting portion 432b communicates with the refrigerant pipe inside the connection line 435 and the refrigerant moved through the refrigerant pipe is discharged to the outside through the micro tube 432c.

The groove connecting portion 432b can freely rotate the outer peripheral surface of the lower body 432 along the peripheral groove 432a. One end of the microtubule 432c is connected to the groove connecting portion 432b, but the other end of the microtubule 432c is open. The other end of the microtubule 432c is formed so as to face the end of the rotating bar 434.

The refrigerant is supplied to the tapping object 20 through the microtubule 432c immediately before the rotary burr 43 comes into contact with the tapping object 20 in order to facilitate the tapping operation on the object 20 to be taped. When the refrigerant is supplied to the tapping object 20, the groove connecting portion 432b can turn the outer peripheral surface of the lower end body 432 more than one time through the peripheral groove 432a. The refrigerant can be supplied to the tapping object 20 evenly.

5, a description will be given of a tapping apparatus 1 in which a vibration damping unit 300 is additionally provided. The vibration damping unit 300 shown in FIG. 5 absorbs external force and serves to increase the durability of the structures connected to the vibration damping unit 300.

In one embodiment of the present invention, the vibration damping part 300 may be located between the two first connecting bars 230 and between the two second connecting bars 250. Between the first joint 220 and the center joint 240 and between the center joint 240 and the second joint 260 can be easily exposed to an external impact. Therefore, the vibration damping unit 300 can absorb the force applied to the first connection bar 230, the second connection bar 250, and the respective joints through the installation of the vibration damping unit 300.

The detailed structure of the vibration damping unit 300 will be described with reference to FIG.

The vibration damping unit 300 may be installed in a portion where one structure is adjacent to the other structure to absorb vibrations generated between the frames.

Specifically, the vibration damping portion 300 includes a support portion 331, a vibration absorbing portion 332, a connecting plate 333, an extension plate 334, and a mounting portion 335.

The support portion 331 includes a first plate 331-1, a second plate 331-2, a third plate 331-3, and a fourth plate 331-4 ).

At this time, the first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 are spaced apart from each other such that their rear ends are opposed to each other, And the vibration absorbing portion 332 is installed in the spaced space to absorb the vibration transmitted to each plate.

The vibration absorbing portion 332 is provided between each plate of the support portion 331 and the other plate to absorb vibration.

In one embodiment, the vibration absorbing portion 332 may be formed by means of an elastic material such as a spring or rubber, which absorbs the impact. However, if the material absorbs the impact, Will be possible.

The connecting plate 333 is disposed between the upper portion of the first plate 331-1 and the upper portion of the second plate 331-2 and between the front end of the second plate 331-2 and the upper end of the third plate 331-3 Between the front ends, between the lower part of the third plate 331-3 and the lower part of the fourth plate 331-4 and between the front end of the fourth plate 331-4 and the front end of the first plate 331-1 The first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 in a " + " shape Connect.

In other words, the connection plate 333 can form an overall appearance by interconnecting the upper, lower, or front ends of the respective plates, as well as, by rotating each connection portion, By adjusting the angle of connection, vibration or shock can be absorbed more efficiently.

That is, when the first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 are fixed to each other by the connection plate 333 If a critical vibration or a critical impact is applied, the coupling plate 333, which is connected to each plate, can not sustain the vibration or the critical impact, so that the original function can not be performed .

Accordingly, the connecting plate 333 according to the present invention includes the first plate 331-1, the second plate 331-2, the third plate 331-3, and the fourth plate 331-4 By connecting to a certain degree of movement, it is possible to maintain the engagement more efficiently in vibration or impact than in the case described above.

The extension plate 334 includes an upper portion (i.e., an upper blade) and a front end (i.e., a front end blade) of the first plate 331-1, an upper portion and a front end of the second plate 331-2, -3), and the mounting portion 335 for each plate in the upper or lower direction from the lower end and the front end of the fourth plate 331-4.

In one embodiment, the extension plate 334 can be pivoted by connecting the upper or lower portion to the pivot shaft formed at the lower portion of the mounting portion 335. [

The mounting portion 335 is connected to the upper or lower portion of the upper frame 310 so that the upper or lower portions of the two extending plates 334 extending from the respective plates are opposed to and rotatable with respect to each other, (E.g., using fastening means such as screw bolts, welding or rivets).

FIG. 7 is a view showing the first plate of FIG. 6; FIG.

Referring to FIG. 7, the first plate 331-1 includes a plate body 331-11, two first upper engagement grooves 331-12, a second upper engagement groove 331-13, two And includes first and second shear locking grooves 331-14 and 331-15.

The plate main body 331-11 is formed of a plate of an " a " shape, and two first upper fastening grooves 331-12 and a second upper fastening groove 331-13 are formed on the upper blade, Two first shear locking grooves 331-14 and a second shear locking groove 331-15 are formed on the wing.

The first upper engagement groove 331-12 is formed on the upper blade of the plate body 331-11 formed in the upward direction and is connected to the front end of the connection plate 333 so as to be rotatable.

The second upper engagement groove 331-13 is formed between the first upper engagement grooves 331-12 so that the lower portion of the extension plate 334 is rotatably connected.

The first shear engagement grooves 331-14 are formed on the front end of the plate body 331-11 formed in the front end direction and are connected to each other so that the upper portion of the connection plate 333 is rotatable.

The second shear engagement grooves 331-15 are formed between the first shear engagement grooves 331-14 and are connected so that the lower portion of the extension plate 334 can rotate.

In one embodiment, the extension plate 334 is provided with a second upper engagement groove 331, 332 so as to be slidable in the vertical direction in the second upper engagement groove 331-13 or the second shear engagement groove 331-15. And a vertical sliding groove 341 can be formed at a lower portion connected to the second front end locking groove 331-15 or the second front end locking groove 331-15.

The connection plate 333 may also have a sliding groove having the same structure as the sliding groove 341 of the extension plate 334 described above.

The first plate 331-1 having the above-described structure is mounted on the second plate 331-2, the third plate 331-3, or the fourth plate 331-4, The description of the second plate 331-2, the third plate 331-3 or the fourth plate 331-4 will be omitted.

In one embodiment, the rotation center bar 110, the first support 120, the extension bar 130, the rotation support bar 140, the second support 210, the first joint 220, The connecting bar 230, the center joint 240, the second connecting bar 250, the second joint 260, the center plate 510, the first plate 540 and the second plate 550 are made of PET resin The outer shape can be made of a plastic sheet having superior moldability and durability than a plastic sheet produced by using alone.

The plastic sheet according to the present invention is produced by the following method for producing a plastic sheet.

8, a method for producing a plastic sheet for producing a plastic sheet according to the present invention comprises: 100 parts by weight of a polyethylene terephthalate (PET) resin; 2 to 4 parts by weight of a polyurethane dispersant; 0.1 to 0.2 part by weight of polyethylene dioxythiophene polystyrene sulfonate, 3 to 5 parts by weight of polystyrolsulfonic acid, N-methyl-2-pyrrolidone, 0.1 to 0.3 parts by weight of triethylamine, 42 to 45 parts by weight of isopropyl alcohol and 50 to 52 parts by weight of water to prepare a mixed composition (S110); A second step (S120) of preheating the mixed composition; A third step (S130) of removing moisture from the preheated mixed composition; A fourth step (S140) of heating the moisture-removed mixed composition; A fifth step (S150) of removing foreign substances from the heated mixed composition; A sixth step (S160) of stretching the mixed composition from which the foreign substances have been removed while cooling it to produce a plastic sheet; And a seventh step (S170) of applying silicone to the plastic sheet and drying the plastic sheet.

The present invention can produce a plastic sheet having excellent moldability and durability by preheating, dehumidifying, heating and cooling by mixing various additives with conventional PET resin.

In the first step S110, as a mixing step of the raw materials, polyethylene terephthalate (PET) resin is used as a base resin, and a polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate ), Polystyrolsulfonic acid, N-methyl-2-pyrrolidone, triethyl amine, isopropyl alcohol and water. .

The PET resin is a base resin, which has excellent thermal stability and high crystallinity, can be recycled, and is manufactured in a master batch form. The polyurethane dispersant functions to improve the compatibility with other components. Polyethylene dioxythiophene polystyrene sulfonate, polystyrolsulfonic acid, N-methyl-2-pyrrolidone, and triethyl amine. Function as an antistatic agent. Since the plastic sheet for producing the plastic container is generally an electrical insulator, static electricity is generated by friction charging, and if it is seriously damaged by discharge or electric conduction, it may lead to an accident such as explosion or fire, so it is preferable to add a charging agent . Isopropyl alcohol functions as an antifogging agent. The anti-fogging agent can inhibit the formation of water droplets due to the water vapor which may be generated when a plastic container is used to store a fruit or the like by using a plastic sheet.

In one embodiment, the above ingredients are mixed with 100 parts by weight of a polyethylene telephthalate (PET) resin, 2 to 4 parts by weight of a polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate ), 0.4 to 0.6 parts by weight of polystyrolsulfonic acid, 3 to 5 parts by weight of N-methyl-2-pyrrolidone, 0.1 to 5 parts by weight of triethylamine amine in an amount of 0.1 to 0.3 part by weight, 42 to 45 parts by weight of isopropyl alcohol and 50 to 52 parts by weight of water. When added beyond the above-mentioned range, various problems may occur. Particularly, in the case of an antistatic agent, when mixed over the respective ranges, the plastic surface to be produced may be sticky, the sealing property and printability may be deteriorated, and in the case of white plastic, yellowing may occur.

In addition, the first step (S110) can further mix various additional components in the raw materials to enhance the functionality of the plastic sheet.

In one embodiment, the boron-based binder may be further mixed. The boron (B) type binder is used for bonding the respective components, and the boron type binder is preferably mixed in 2 to 10 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the boron-based binder is less than 2 parts by weight, the raw material or the like can not be effectively bonded, and when the content of the boron-based binder exceeds 70 parts by weight, it is uneconomical.

In one embodiment, the garlic extract may be further mixed. The garlic extract is a natural adhesive component, which together with the boron-based binder functions as a binder which improves the compatibility with other constituents. The garlic extract is peeled and crushed, and 2 to 3 parts by weight of water is added per 1 part by weight of garlic. After heating at 80 to 100 캜 for 5 hours or more, the liquid component is extracted and filtered, The liquid component can be prepared by concentrating at 55 to 60 占 폚. The garlic extract is preferably mixed in 5 to 10 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the garlic extract is less than 5 parts by weight, the raw material components may not be properly entangled so that the surface of the plastic sheet may not be uniformly formed. When the amount of the garlic extract is more than 10 parts by weight, There is a risk of degradation.

In one embodiment, the apatite powder may be further mixed. The apatite powder functions as a filler and can maintain the shape of the plastic sheet, thereby improving workability and improving strength and corrosion resistance. Apatite is an inorganic substance present in bone. It is important to use a small amount of particles, a high residual amount of carbonate, and low crystallinity for use as a filler. Preferably, the size of the apatite granules is 200 to 400 탆. For this purpose, it is important to carry out the sintering process at 500 to 700 ° C. When sintering at less than 500 ° C, there is a disadvantage in that the desired granule size and crystallinity can not be obtained. When sintering exceeds 700 ° C, there is a disadvantage in that the remaining amount of carbonate is low and the crystallinity becomes too high. The apatite powder is preferably mixed in 20 to 30 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the apatite powder is less than 20 parts by weight, there is a disadvantage in that the adhesive strength is lowered, and when it exceeds 30 parts by weight, the impact resistance is weakened.

In one embodiment, the cork powder may be further mixed. Cork powder can improve the durability of the plastic sheet with apatite powder. The cork powder can be prepared by removing the shell of oak oak and then crushing it. For the cork powder to be mixed with the PET resin and the like, it is preferable to use fine pulverized particles which have been passed through a mesh of 400 mesh or more. The cork powder is preferably mixed in 15 to 25 parts by weight with respect to 100 parts by weight of the PET resin. When the cork powder is less than 15 parts by weight, improvement in durability is insignificant. When the cork powder is more than 25 parts by weight, porosity may be formed in the production of plastics, and durability may be lowered.

In one embodiment, the Sorghum extract can be further mixed. Sorghum extract not only acts as an antimicrobial agent but also inhibits the yellowing of white plastic sheets. Rumex crispus is a genus of Rumex spp. It is a perennial herb that grows well in moist places of various places. It uses the lysoon as a food in the private sector. In the oriental medicine, it is called a yosei, and it is categorized into various diseases including cystitis, gallbladder disease, bile secretion disorder, spleen disease, It is used as an adjuvant treatment for tumors and cancer. Sorghum extract extracted from Sora japonica has antimicrobial and antioxidant effects against various microorganisms. When mixed with a small amount of sulfur, it has an excellent effect on skin itching. It has been reported that saponins, tannins, flavonoids, essential oils and chrysophanol, and anthraquinone derivatives such as emodin, are known to be useful components of the present invention. The extracts of Sorae Seedlings were washed in 80% (v / v) methanol for 3 days as an extraction solvent by washing the collected Sorghum wells and then drying them in the shade and dividing them into the ground part (except the root) and the root part (root part) After soaking, the extract is filtered with a membrane filter (pore size 0.5 mu m) to separate the solid, and the methanol extract can be prepared by concentrating the extract at 50 DEG C using a rotary evaporator. It is preferable that the Sorghum extract is mixed in 3 to 8 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the extract is less than 3 parts by weight, the antimicrobial activity is insufficient in preventing yellowing, and when it is more than 8 parts by weight, it is uneconomical.

The second step (S120) is a step of preheating the mixed composition, and heat is applied to the mixed material so that the materials are stably mixed.

The third step (S130) is a dehumidifying step for removing moisture present in the preheated mixed composition, and the desiccation is preferably performed in a temperature range of 150 to 180 ° C. If the amount is less than or more than the above range, the dehumidification may not be sufficiently performed, or the durability of the plastic may be adversely affected.

The fourth step (S140) is a step of heating the mixed composition from which moisture has been removed, and the heating temperature is preferably controlled to 260 to 270 ° C in order to melt and maintain the mixed composition.

The fifth step S150 is a step of removing foreign matter from the heated mixed composition. The foreign matter may be removed from the inside of the mixed composition by passing through a screen in the form of a mesh.

The sixth step (S160) is a step of cooling the mixed composition from which foreign matters have been removed to prepare a plastic sheet, which is then stretched in two stages using a cooling roll. The primary stretching takes place in the longitudinal direction through a chill roll maintained at 16-17 캜 and the secondary stretching takes place in the width direction (vertical direction in the longitudinal direction) through a cooling roll maintained at 20-23 캜. The reason for raising the temperature of the secondary elongation to be higher than the primary elongation temperature is to prevent the plasticizability of the solidified plastic sheet from being dried and to improve the durability and moldability of the plastic sheet by alternately stretching the longitudinal direction and the width direction .

The seventh step (S170) is a step of applying silicone to the plastic sheet and then drying it, so that the antistatic effect can be obtained while the silicone is applied and finished. It is preferable that silicone is applied using a diluted coating liquid in a concentration range of 5 to 25%, coated with silicone, and then dried at 160 to 215 캜. Further, it is preferable that the anti-fogging agent component is mixed with the silicone-containing coating liquid in order to suppress the water phenomenon formed in the produced plastic container.

Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples. However, this embodiment is intended to explain the present invention more specifically, and the scope of the present invention is not limited to these embodiments.

[Examples and Comparative Examples]

After preparing a mixed composition according to the composition shown in the following Table 1, plastic sheets were prepared by preheating, dehumidifying, heating, removing foreign matter, cooling, stretching and drying to prepare Examples and Comparative Examples. For each material, commercially available materials were used, and garlic extract and Sorghum extract were prepared as described in the detailed description of the invention.

[Table 1]

[Experimental Example 1]

The compositions of Examples 1 to 3 and Comparative Examples were secondarily drawn to prepare a plastic sheet having a thickness of 10 mm, and the uniformity of the sheet surface was measured and reported in Table 2 below. At this time, the primary drawing was performed at 16 占 폚 and the secondary drawing was performed at 21 占 폚. The uniformity was measured using a laser sensor (N2 laser, oscillation wavelength 337.1 nm, UDHO Laser., Japan), and 30 points were randomly selected and their surface roughness was measured , A value equal to or less than 0.3 was considered to be uniform, and a value exceeding 0.3 was evaluated to be non-uniform. Here, Examples 1 to 3 were stretched in the transverse direction after stretching in the longitudinal direction, and stretched only in the longitudinal direction in the Comparative Example.

[Table 2]

As shown in Table 2, in Examples 1 to 3, uniformity was more excellent than Comparative Example.

[Experimental Example 2: Torsion Test]

The compositions of Examples 1 to 3 and Comparative Examples were secondarily stretched to prepare a plastic sheet having a thickness of 2 mm and then molded to produce 100 plastic products, and the completeness of the plastic sheets was evaluated. Here, Examples 1 to 3 were stretched in the transverse direction after stretching in the longitudinal direction, and stretched only in the longitudinal direction in the Comparative Example.

[Table 3]

As shown in Table 3, in the case of Examples 1 to 3, 90% or more of the normal product could be made, but the comparative example had a relatively high defect rate.

[Experimental Example 3: yellowing test]

The compositions of Examples 1 and 3 were secondarily stretched to prepare a plastic sheet having a thickness of 2 mm and then molded to prepare 100 white plastic products. Ten months later, discoloration was visually observed, . At this time, a part changed to yellow color was evaluated as poor.

[Table 4]

As shown in Table 4, in Example 3, it was confirmed that almost all the products were not discolored. On the other hand, Example 1 showed good results, but had a higher discoloration rate than Example 3.

[Experimental Example 4: Anti-Fogging Test]

The composition of Comparative Example and Example 3 was secondarily drawn to prepare a plastic sheet having a thickness of 2 mm and then molded to produce 100 white plastic products. The spinach was stored inside, and after one day, The results are shown in Table 5 below.

[Table 5]

As shown in Table 5, in the case of Example 3, almost no water droplets were formed, but in the comparative example, it was confirmed that water droplets enough to be visually recognized were formed.

The structure made of the plastic sheet made of the above-mentioned material can improve moldability and durability as compared with the case of using PET resin alone.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: tapping device
10: bottom surface 20: tapping object 100: rotation adjustment module
110: rotation center bar 120: first support base 130: extension bar
140: rotation support bar 150: rotation coupling part 200: length adjustment module
210: second support bar 220: first joint 230: first connection bar
240: center joint 250: second connecting bar 260: second joint
300: Vibration damping part 400: Tapping part 410: Center body
420: extension body 430: tapping device 433: rotation driving part
434: Rotary burr 500: Double hinge part 510: Center plate
520: first rotation connection part 530: second rotation connection part

Claims (2)

A rotation adjusting module 100 which is rotatably coupled to the bottom surface 10 at one end and is rotated based on a rotation axis perpendicular to the bottom surface 10;
A length adjusting module 200 rotatably coupled to the other end of the rotation adjusting module 100 and having a length adjustable in a radial direction with respect to the other end of the rotation adjusting module 100; And
And a tapping part (400) including a rotary burr (434), one end of which is coupled to the other end of the length adjusting module (200) and is capable of punching and tapping the material.
The rotation adjustment module (100)
A first support (120) extending in a vertical direction from the bottom surface (10);
A rotation center bar (110) rotatably coupled to the first support base (120);
An extension bar 130 extending in a lateral direction of the rotation center bar 110; And
And a rotation support bar 140 provided at the other end of the extension bar 130 and rotatably coupled to the length adjustment module 200,
The length adjustment module 200 includes:
A second support 210 rotatably coupled to the rotation support bar 140;
A first joint 220 fixedly coupled to the second support 210;
Two first connection bars 230, one end of which pivotally hinges to the first joint 220, respectively;
A center joint 240 pivotally hinged to the other ends of the two first connecting bars 230;
Two second connecting bars 250 each having one end pivotally hinged to the center joint 240; And
And a second joint (260) pivotally hinged to the other ends of the two second connection bars (250), respectively,
The tapping unit 400 includes:
A central body (410) defining a body;
An elongated body 420 extending to a side of the central body 410; And
And a rotating bar (434) provided on the extension body (420) and rotatably mounted on the extension body (420)
A double hinge part 500 is further provided between the second joint 260 and the center body 410,
The double hinge unit 500 includes a center plate 510 forming a body, a first rotation connection 520 rotatably coupled to one end of the center plate 510, A first rotatably coupled portion 530 rotatably coupled to the first rotation connection portion 520, a first plate 540 rotatably coupled to the first rotation connection portion 520 and fixedly coupled to the second joint 260, And a second plate (550) rotatably coupled to the rotation connection part (530) and fixedly coupled to the center body (410).

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