KR101985295B1 - Tapping machine - Google Patents

Abstract

The present invention relates to a tapping apparatus, which is possible to efficiently control movement of an object to be processed in accordance with a process even during a repetitive tapping process. The present invention includes: a holding unit holding the object to be processed so as to maintain lateral horizontality; and a process unit tapping and processing the object to be processed, held by the holding unit.

Description

[0001] TAPPING MACHINE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tapping device, and more particularly, to a tapping device that can efficiently control the movement of a workpiece during a repeated tapping process.

In general, the tapping machine is a device for forming a female thread in a machined hole inner diameter, which is machined through a tap having an outer diameter corresponding to the pre-machined hole inner diameter and a predetermined pitch on the outer circumference.

The tapping machine includes a single-tap tapping machine using a single tap for machining an inner diameter of a hole formed in a workpiece, and a multi-axis tapping machine having a plurality of tabs for simultaneously machining a plurality of holes formed in the workpiece, .

Among the tapping machines classified into the short axis and the multi axis according to the machining process, the multi-axis tapping machine is widely used because it cuts the work time and reduces the manpower.

In the conventional tapping machine, a driving motor for realizing the rotational force of the tab and the upward and downward reciprocating motion is interposed above the frame, and a tap for transmitting the rotational force of the driving motor to the tap, A plurality of shafts are connected upright.

As described above, at the tip end of the tap shaft connected to the drive motor, a joint having a predetermined pitch is formed and a tab interposed therebetween is rotatably interposed. Also, a joint is formed between the tab and the joint so that the uprightness of the tab according to the joint displacement can be ensured.

However, the conventional tapping device does not have any other means for supporting the workpiece during the tapping process, and it is disadvantageous that it is difficult to perform precise tapping when the driving force due to tapping is applied to the workpiece by moving the workpiece .

On the other hand, the background art described above is technical information acquired by the inventor for the derivation of the present invention or obtained in the derivation process of the present invention, and can not necessarily be a known technology disclosed to the general public before the application of the present invention .

Korean Registered Utility Model No. 20-0302851 Korean Registered Utility Model No. 20-0360301

One aspect of the present invention provides a tapping device that can efficiently control the movement of a workpiece in accordance with processing even in repetitive tapping using a frame provided on both sides of the tab.

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

A tapping device according to an embodiment of the present invention includes: a mounting part for mounting a workpiece so as to be horizontally left and right; And a processing unit for tapping and processing the workpiece held by the mounting unit.

In one embodiment, the processing portion includes: a body portion forming an outer shape; A support provided below the main body to support the main body so as to be spaced apart from the ground; A tapping part installed vertically inside the body part, the lower part of the tapping part being vertically driven to tap and process the workpiece; A tapping control unit connected to the tapping unit by wire or wireless and receiving a control of driving the tapping unit from a user; And a discharge unit installed on the lower side of the main body to discharge a piece of the workpiece tapped by the tapping unit, the main body having a cylindrical shape and having the tapping unit installed in the inner space; A tapping space which is recessed in a rear end direction from a lower portion of the body to form a space for disposing a workpiece; A tapping lathe formed at a front end entrance portion of the tapping space and having a portion to be tapped in the workpiece; And a through hole for vertically passing through the tapping shelf and discharging a piece of the work piece tapped and separated in a downward direction, the discharge portion extending from a lower side of the tapping shelf, The tapping unit is installed in the inner space of the body and receives hydraulic pressure from the outside using a hydraulic hose. The driving shaft is vertically reciprocated using the hydraulic pressure A driving unit; A tab provided below the drive shaft and moving together with the downward movement of the drive shaft to tap and process the workpiece; And two support frames spaced apart from both sides of the tab and pressing and supporting the workpiece so that the workpiece does not move during the tapping process, So that the workpiece is prevented from moving on the tapping lathe when the tapping process is performed and the support frame is also moved upward together with the tapping movement so that the workpiece is separated from the tapping space, The support frame comprises: a support comprising a first plate, a second plate, a third plate and a fourth plate formed of "a" A vibration absorbing part provided between the plate of the support part and the other plate to absorb vibration; Between the upper portion of the first plate and the upper portion of the second plate, between the front end of the second plate and the front end of the third plate, between the lower portion of the third plate and the lower portion of the fourth plate, A second plate, a third plate, and a fourth plate that are installed between the front end of the first plate and the front end of the first plate to connect the first plate, the second plate, the third plate, and the fourth plate; The upper and the front ends of the first plate, the upper and the front ends of the second plate, the front and lower ends of the third plate, and the upper and lower ends of the fourth plate, An extension plate; Four swiveling parts connected to each other such that upper or lower portions of two extension plates extending from each plate are opposed and rotatable; And two support bars provided on the upper or lower side of the rotary part and supported by the rotary part to be spaced apart from each other in the vertical direction to form an interspace.

According to one aspect of the present invention, by using a frame installed on both sides of the tab, it is possible to efficiently control the movement of the workpiece in accordance with the process even in the repeated tapping process, thereby preventing the workpiece from moving during tapping, Thereby providing an effect of improving the precision of machining.

1 is a view showing a schematic configuration of a tapping apparatus according to an embodiment of the present invention.
Fig. 2 is a view showing the machining unit of Fig. 1. Fig.
FIG. 3 is a view showing the body of FIG. 2. FIG.
FIG. 4 is a view showing the tapping unit of FIG. 3. FIG.
5 and 6 are views for explaining a method of processing a workpiece by the tapping unit of FIG.
Fig. 7 is a view showing an example of the support frame of Fig. 4;
FIG. 8 is a view showing the first plate of FIG. 7; FIG.
Fig. 9 is a flowchart for explaining a method for producing a plastic sheet for producing the plastic sheet of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, 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 features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

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

1 is a view showing a schematic configuration of a tapping apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a tapping apparatus 10 according to an embodiment of the present invention includes a mounting portion 100 and a processing portion 200.

The mounting part 100 is formed of a plurality of bars, and the processing part is mounted horizontally so that the processing part 200 is positioned in a space between the mounting parts.

In the case of FIG. 1, two mounting portions 100 are provided. However, the number of the mounting portions 100 is not limited to the number of the mounting portions 100, and may be more or less depending on the factors such as the number, volume, or weight of the workpieces.

The machining unit 200 taps and processes the workpiece that has been held by the mount 100.

The machining unit 200 according to this nickname is an apparatus for performing machining to make a hole in a workpiece by using a drilling machine or the like. If the apparatus is capable of tapping, Can be applied without.

The tapping device 10 having the above-described structure efficiently controls the movement of the workpiece in accordance with the process even in repeated tapping using the frame provided on both sides of the tab, thereby preventing the workpiece from moving during tapping It is possible to improve the precision of machining by tapping.

Fig. 2 is a view showing the machining unit of Fig. 1. Fig.

2, the processing unit 200 includes a main body 210, a supporting unit 220, a tapping unit 230, a tapping control unit 240, and a discharging unit 250.

The main body 210 includes a tapping part 230 formed in the inner space formed in the vertical direction and having a supporting part 220 provided at the lower part and spaced apart from the ground, And a discharge unit 250 is installed on the lower side.

The support portion 220 is installed on the lower side of the main body 210 to support the main body 210 so as to be spaced apart from the ground.

The tapping portion 230 is installed in the vertical direction inside the body portion 210 and the lower side is driven in the vertical direction to tap the workpiece to process (i.e., punch holes).

The tapping control unit 240 is connected to the tapping unit 230 in a wired or wireless manner and receives control of driving the tapping unit 230 from the user.

The discharge unit 250 is disposed below the main body 210 and is tapped by the tapping unit 230 to discharge the separated work piece.

In one embodiment, the discharge portion 250 is formed by extending a piece of the workpiece that extends from the lower side of the tapping shelf 213 (see FIG. 3) and is discharged through the through hole 214 (see FIG. 3) (260).

At this time, the lower part of the discharge part 250 or the entire body is formed in the form of a corrugated pipe, so that the pieces of the workpiece can be guided to the defrag cylinder 260 according to the user's needs.

FIG. 3 is a view showing the body of FIG. 2. FIG.

Referring to FIG. 3, the main body 210 includes a body 211, a tapping space 212, a tapping shelf 213, and a through hole 214.

The body 211 is formed in a cylindrical shape, and a tapping portion 230 is provided in the inner space, and a tapping space 212 is formed so that a workpiece can be disposed at a lower portion.

At this time, the body 211 is formed in a cylindrical shape whose lower portion is cut in half so that the tapping space 212 is formed, so that the workpiece can be positioned regardless of the size or the volume of the workpiece.

The tapping space 212 is recessed from the lower portion of the body 211 toward the rear end to form a space in which the workpiece is disposed.

At this time, the tapping space 212 may be formed as a semi-circular space as shown in FIG. 3, or may be formed as a polygonal space such as a triangle or a square corresponding to the size or shape of the workpiece .

The tapping shelf 213 is formed in a front end entrance portion of the tapping space 212 and is formed in a plane so that a portion to be tapped in the workpiece can be placed thereon and a piece of the workpiece to be tapped and separated is discharged in a downward direction A through hole 214 penetrating downward is formed at a portion where the work piece is separated.

The through hole 214 is formed by vertically penetrating the tapping shelf 213 to drop a piece of the workpiece that has been tapped and separated in the downward direction to be discharged into the defrag cylinder 260 through the discharge portion 250 .

FIG. 4 is a view showing the tapping unit of FIG. 3. FIG.

4, the tapping part 230 includes a driving part 231, a tab 232, and two support frames 300. [

The driving unit 231 is installed in the inner space of the body 211 and receives hydraulic pressure from the outside using the hydraulic hose 233 (see FIG. 3), and vertically reciprocates the driving shaft using the hydraulic pressure.

That is, the driving unit 231 reciprocates in the cylinder so as to generate an efficient linear reciprocating motion of the tab 232 and a sufficient driving force for drilling the workpiece, It is preferably formed as a hydraulic piston,

The driving unit 231 moves the support frame 300 in the downward direction when the tab 232 is moved downward so that the workpiece can be prevented from moving on the tapping shelf 213 during tapping When the tab 232 is moved upward, the support frame 300 is also moved upward so that the workpiece is separated from the tapping space 212.

The tab 232 is provided under the drive shaft of the drive unit 231 and moves together with the downward movement of the drive shaft to tap and process the workpiece and the tab 232 corresponds to the type of tapping And may be formed into various shapes.

The support frame 300 is disposed on both sides of the tab 232 and supports the workpiece by pressing it so that the workpiece does not move during the tapping process.

In one embodiment, the support frame 300 may be formed as a flat frame as shown in FIG. 4, but may also be formed as a flat frame as shown in FIG. 4, Structure.

A processing method of the workpiece by the tapping portion 230 having the above-described structure will be described with reference to FIG.

2) When the tab 232 and the supporting frame 300 are moved together in the downward direction by the driving force of the driving unit 231, 5 (b)), and 3) the hole is pierced by the driving force of the tab 232 (Fig. 5 (b)). In this case, the support frame 300 is pushed so as not to move during processing of the workpiece, When the process is completed, the tabs 232 and the support frame 300 are moved upward together so that the workpiece is separated from the tapping space 212.

Next, referring to Fig. 6, a process of drilling holes of the workpiece by the tab 232 will be described. First, the workpiece is placed on the tapping lathe 213 (Fig. 6 (a) (2) The tab 232 is moved downward by the driving force of the driving unit 231 (Fig. 6 (b)), and 3) the driving force of the driving unit 231, ), The tab 232 penetrates the workpiece and creates a hole.

The tapping portion 230 having the above-described structure can efficiently control the movement of the workpiece in accordance with the process even in the repeated tapping process using the two support frames 300 provided on both sides of the tab 232, It is possible to prevent the workpiece from moving during the tapping process, thereby improving the accuracy of the process according to the tapping.

Fig. 7 is a view showing an example of the support frame of Fig. 4;

7, the supporting frame 300 includes a supporting portion 310, a plurality of vibration absorbing portions 320, a plurality of connecting plates 330, a plurality of extending plates 340, four pivoting portions 350 And two support bars 360.

The support portion 310 includes a first plate 311, a second plate 312, a third plate 313, and a fourth plate 314 formed of an "a" shaped plate.

At this time, the first plate 311, the second plate 312, the third plate 313, and the fourth plate 314 are spaced apart from each other so as to face each other, And the vibration absorbing part 320 is installed in each of the spaced apart spaces to absorb the vibration transmitted to each plate.

The vibration absorbing portion 320 is installed between each plate of the support portion 310 and the other plate to absorb vibration.

In one embodiment, the vibration absorbing portion 320 may be formed by means of an elastic material such as a spring or rubber capable of absorbing impact, but it is not limited to the name Will be possible.

The connecting plate 330 is disposed between the upper portion of the first plate 311 and the upper portion of the second plate 312, between the front end of the second plate 312 and the front end of the third plate 313, Between the lower portion of the first plate 314 and the lower portion of the fourth plate 314 and between the front end of the fourth plate 314 and the front end of the first plate 311, The second plate 312, the third plate 313 and the fourth plate 314 are connected in a "+" form.

In other words, the connection plate 330 can form an overall appearance by interconnecting the upper, lower, or front ends of the respective plates, By adjusting the angle of connection, vibration or shock can be absorbed more efficiently.

That is, when the first plate 311, the second plate 312, the third plate 313 and the fourth plate 314 are fixed to each other by the connecting plate 330, However, if a critical vibration or a critical impact is applied, the connection plate 330 connected to each plate can not be maintained and the original function can not be performed.

Accordingly, the connecting plate 330 according to the present invention is formed by connecting the first plate 311, the second plate 312, the third plate 313, and the fourth plate 314 so as to be movable to some extent , It is possible to maintain the fastening effectively to the vibration or impact more than the case described above.

The extension plate 340 is connected to the upper portion of the first plate 311 (i.e., the upper blade) and the front end (i.e., the front end) of the second plate 312, And the lower portion of the fourth plate 314 and the upper portion or the lower portion of the fourth plate 314.

In one embodiment, the extension plate 340 can be pivoted by connecting the upper or lower portion to the pivot shaft formed at one side of the pivot portion 350.

In one embodiment, the extension plate 340 is provided with a second upper engagement groove 3113 or a second upper engagement groove 3113 so as to be able to slide in the vertical direction in the second upper engagement groove 3113 or the second front engagement groove 3115. [ And a vertical sliding groove 341 (see FIG. 8) can be formed at a lower portion connected to the front end locking groove 3115.

The swinging unit 350 is installed so that upper or lower portions of the two extension plates 340 extending from the respective plates are opposed to each other so as to be rotatable and installed on each inner side of the supporting bars 360 facing each other For example, using fastening means such as screw bolts, welding or rivets.

The support bar 360 is provided with an upper side or a lower side of the rotary part 350. The support bar 360 located on the upper side is fixed to the lower side of the driving part 231, So that a space is formed in which the support frame 300 is spaced apart in the vertical direction.

The support frame 300 having the above-described structure prevents the workpiece from being warped or broken due to the force applied by the frame before the workpiece is subjected to the tapping process due to the application of excessive force to the workpiece in pressing the workpiece And the workpiece can be pressed and supported by an appropriate force, so that the tapping process can be more efficiently performed.

FIG. 8 is a view showing the first plate of FIG. 7; FIG.

8, the first plate 311 includes a plate body 3111, two first upper engagement grooves 3112, a second upper engagement groove 3113, two first shear engagement grooves 3114, And a second shear locking groove 3115. [

The plate body 3111 is formed of a plate of an " a " shape, and two first upper fastening grooves 3112 and a second upper fastening groove 3113 are formed in the upper blade, The front end fastening groove 3114 and the second front end fastening groove 3115 are formed.

The first upper fastening groove 3112 is formed in the upper blade of the plate body 3111 formed in the upward direction, and the front end of the connection plate 330 is rotatably connected.

The second upper engagement groove 3113 is formed between the first upper engagement grooves 3112 and is connected to the lower end of the extension plate 340 so as to be rotatable.

The first shear engagement groove 3114 is formed at the front end of the plate body 3111 formed in the front end direction and is connected to the upper portion of the connection plate 330 so as to be rotatable.

The second shear engagement groove 3115 is formed between the first shear engagement grooves 3114 and connects the lower portion of the extension plate 340 so as to be rotatable.

In one embodiment, the extension plate 340 is provided with a second upper engagement groove 3113 or a second upper engagement groove 3113 so as to be able to slide in the vertical direction in the second upper engagement groove 3113 or the second front engagement groove 3115. [ And a vertical sliding groove 341 can be formed at a lower portion connected to the front end fastening groove 3115.

The connection plate 330 may also have a sliding groove having the same structure as the sliding groove 341 of the extension plate 340 described above.

The first plate 311 having the above-described structure can be applied to the second plate 312, the third plate 313 or the fourth plate 314 which are different from each other only in the installation position. 2 plate 312, the third plate 313 or the fourth plate 314 will not be described.

The support bar 360 of FIG. 7 according to the present invention can be made of a plastic sheet having superior moldability and durability than a plastic sheet produced by using PET resin alone.

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

9, a method of producing a plastic sheet for producing a plastic sheet according to the present invention comprises: 100 parts by weight of a polyethylene terephthalate (PETO) resin; 2 to 4 parts by weight of a polyurethane (PO) dispersant; 0.1 to 0.2 part by weight of polyethylene dioxythiophene polystyrene sulfonate 0, 3 to 5 parts by weight of polystyrolsulfonic acid 0, N-methyl-2-pyrrolidone 0, 0.1 to 0.3 part by weight of ethylamine, 42 to 45 parts by weight of isopropyl alcohol, and 50 to 52 parts by weight of water to prepare a mixed composition (S1100); A second step (S1200) of preheating the mixed composition; A third step (S1300) of removing moisture from the preheated mixed composition; A fourth step (S1400) of heating the moisture-removed mixed composition; A fifth step (S1500) of removing foreign substances from the heated mixed composition; A sixth step (S1600) of producing a plastic sheet by stretching the mixed composition from which foreign matters have been removed by cooling; And a seventh step (S1700) 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 S1100, as a mixing step of the raw materials, polyethylene terephthalate (PETO) resin is used as a base resin, and a polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate ), Polystyrolsulfonic acid 0, N-methyl-2-pyrrolidone 0, triethyl amine 0, isopropyl alcohol 0 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 0, polystyrolsulfonic acid 0, N-methyl-2-pyrrolidone 0 and triethyl amine 0, 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 (0) 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-mentioned raw materials are mixed with 100 parts by weight of a polyethylene telephthalate (PETO) resin, 2 to 4 parts by weight of a polyurethane (0) dispersant, polyethylene dioxythiophene polystyrene sulfonate ), 0.4 to 0.6 parts by weight of polystyrolsulfonic acid (0), 3 to 5 parts by weight of N-methyl-2-pyrrolidone (0), triethylamine amine 0), 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 (S1100) may further incorporate various additional ingredients into the raw materials to enhance the functionality of the plastic sheet.

In one embodiment, the boron-based binder may be further mixed. The boron (B0) 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 are sieved 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 crispus0 is a genus of Rumex spp. It is a perennial herb that grows well in the wet places of various places. It uses the lysoon as a food in the private sector. In the oriental medicine, it is called a yosei (Yotei 0), and it includes cystitis, gallbladder disease, bile secretion disorder, spleen disease, skin disease, It is used as an adjunct to various tumors and cancers. 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 is reported that there are saponin, tannin, flavonoid, essential oil and anthraquinone derivatives such as chrysophanol and emodin as useful components of the known cymbals. The extracts of Sorae Seedlings were well washed and then dried in the shade to separate them into the ground part (part 0 excluding roots) and the root part (root part 0). The extract was dissolved in 80% (v / v0) After the soaking for one day, the extract is filtered with a membrane filter (pore size 0.5 mu m < 0 >) to separate the solids, and the methanol extract can be prepared by concentrating 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 (S1200) is a step of preheating the mixed composition, and heat is applied to the mixed raw materials so that the raw materials are mixed stably.

The third step (S1300) is a dehumidifying step for removing moisture present in the preheated mixed composition, and it is preferable that dehumidification is 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 (S1400) is a step of heating the mixed composition from which the 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 S1500 is a step of removing the foreign substances in the heated mixed composition. The foreign matter may be removed from the inside of the mixed composition by passing the screen0 in the form of a mesh (mesh0).

The sixth step (S1600) is a step of cooling the mixed composition from which the foreign substances have been removed to prepare a plastic sheet, which is 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 ° C and the secondary stretching takes place in the width direction (the longitudinal direction 0 in the longitudinal direction) through a cooling roll maintained at 20-23 ° C. 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 (S1700) is a step of applying the silicone to the plastic sheet and then drying it, and it is possible to obtain antistatic effect while applying the silicone to the finish. 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 by using a laser sensor (N2 laser, oscillation wavelength 337.1 nm, UDHO Laser. LTD., Japan0), and 30 points were randomly selected and their surface roughness0 was measured , ± 0.3 and below are uniform, and ± 0.3 and above are not 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 support bar 360 made of the above-described plastic sheet can be more excellent in moldability and durability than that produced by using PET resin alone.

Accordingly, when the support bar 360 is worn or damaged due to continuous vibration, it can be easily re-manufactured and replaced by using the above-described plastic sheet to ensure continuous use of the apparatus.

It will be apparent to those skilled in the art that the above-described embodiments are for illustrative purposes only and that those skilled in the art will readily understand that other embodiments can be readily modified without departing from the spirit or essential characteristics of the embodiments described above You will understand. It is therefore to be understood that the above-described embodiments are to be considered in all respects only as illustrative and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

It is to be understood that the scope of the present invention is defined by the appended claims rather than the foregoing description and should be construed as including all changes and modifications that come within the meaning and range of equivalency of the claims, .

10: tapping device 100:
200: machining unit 210:
211: body 212: tapping space
213: Tapping shelf 214: Through hole
220: Support part 230: Tapping part
231: Driving unit 240: Tapping control unit
250: discharge part 300: support frame
310: support portion 311: first plate
312: second plate 313: third plate
314: fourth plate 320: vibration absorbing part
330: connection play 340: extension plate
350: turning part 360: supporting bar

Claims (2)

A mounting part for mounting the workpiece so as to be horizontal left and right; And
And a machining portion for tapping and processing the workpiece held by the mount portion, wherein the machining portion includes: a main body portion forming an outer shape; A support provided below the main body to support the main body so as to be spaced apart from the ground; A tapping part installed vertically inside the body part, the lower part of the tapping part being vertically driven to tap and process the workpiece; A tapping control unit connected to the tapping unit by wire or wireless and receiving a control of driving the tapping unit from a user; And a discharge unit installed at a lower side of the main body to discharge a piece of the workpiece tapped by the tapping unit,
The body portion is formed in a cylindrical shape and has a tapered portion in an inner space thereof. A tapping space which is recessed in a rear end direction from a lower portion of the body to form a space for disposing a workpiece; A tapping lathe formed at a front end entrance portion of the tapping space and having a portion to be tapped in the workpiece; And a through hole formed in the tapping shelf so as to pass through the tapping shelf in a vertical direction to discharge a piece of the work piece tapped and separated in a downward direction,
Wherein the discharge portion discharges a piece of the work piece extending from the lower side of the tapping shelf and discharged through the through hole to the defrag storage bin,
Wherein the tapping portion includes a driving portion installed in an inner space of the body and receiving hydraulic pressure from an external hydraulic hose and vertically reciprocating the driving shaft using hydraulic pressure; A tab provided below the drive shaft and moving together with the downward movement of the drive shaft to tap and process the workpiece; And two support frames spaced apart from both sides of the tab and pressing and supporting the workpiece so that the workpiece does not move during tapping,
The driving unit moves the support frame downward together with the tab when the tab is moved downward so as to prevent the workpiece from moving on the tapping shelf when the tapping process is performed by pressing the workpiece, So that the work piece is separated from the tapping space,
Wherein the support frame comprises: a support comprising a first plate, a second plate, a third plate and a fourth plate formed of "a" A vibration absorbing part provided between the plate of the support part and the other plate to absorb vibration; Between the upper portion of the first plate and the upper portion of the second plate, between the front end of the second plate and the front end of the third plate, between the lower portion of the third plate and the lower portion of the fourth plate, A second plate, a third plate, and a fourth plate that are installed between the front end of the first plate and the front end of the first plate to connect the first plate, the second plate, the third plate, and the fourth plate; The upper and the front ends of the first plate, the upper and the front ends of the second plate, the front and lower ends of the third plate, and the upper and lower ends of the fourth plate, An extension plate; Four swiveling parts connected to each other such that upper or lower portions of two extension plates extending from each plate are opposed and rotatable; And two support bars provided on the upper or lower surface of the rotary part and supported by the rotary part to be spaced apart from each other in the vertical direction to form an interspace.
delete

Images