KR101953525B1 - Apparatus of transporting materials - Google Patents

Abstract

Disclosed is an apparatus for transporting materials, including: a driving main body providing a loading space of a transporting object; a rail unit fixedly installed on a floor surface and guiding rolling movement of the driving main body while the driving main body is movably mounted thereon; and a conveyor unit fixedly installed in parallel with the rail and restricting movement of the driving main body so that the driving main body reciprocates only by a length along the rail unit.

Description

Material transfer unit {APPARATUS OF TRANSPORTING MATERIALS}

The present invention relates to a material conveying apparatus, and more particularly, to an apparatus for conveying a material while moving on a rail.

In general, the conveying device may be composed of a plurality of frames holding the main body, a loading plate fixed to the upper side of the frame, and wheels arranged below the frame.

In general, the wheel can be arranged to facilitate the change of direction of the truck while rolling.

In addition, at a suitable height of the frame may be disposed a handle for holding the transfer of the body.

Such a transfer device is used to transport a transfer article in a state where a transfer article is placed on an upper side of a loading plate, but has a problem that it is difficult to stop after moving the transfer apparatus to a desired movement position accurately.

That is, a conveying apparatus is generally used in a production line, an assembly line, etc., the bottom surface of which is formed as a flat surface and the conveying apparatus of the upper surface may be simultaneously applied with the rotation and rotational force of the wheel. Therefore, there is a problem in that productivity is lowered due to a delay in the time required for stopping after accurately moving to a moving place for carrying out another work in a state where the transported goods are placed on the transport device.

The present invention provides a material conveying apparatus having a function of transporting materials while moving along a pair of rails formed on the bottom surface, attenuating vibrations that may occur as they move along the rails, and absorbing shocks. .

The material conveying apparatus for solving the above problem is fixed to the drive body, the bottom surface to provide a loading space of the object to be transported, the drive body is seated to be movable, the rail unit for guiding the rolling movement of the drive body And a conveyor unit fixedly installed side by side with the rail and limiting the movement of the driving body such that the driving body reciprocates only by a length along the rail portion.

On the other hand, the drive main body, the upper frame constituting the upper portion of the drive main body, a loading plate for providing a loading space for the object to be transported, a vertical frame formed vertically upward from at least one side of the upper frame and the upper portion A lower frame provided on the lower side of the frame in correspondence with the arrangement of the rail part and providing an installation space of a roller part for moving the driving body along the rail part, wherein the rail part has a predetermined interval on the bottom surface And a pair of rails installed in parallel with each other so as to form a track between a loading position of the object to be transported and a disembarkation position of the object to be transported, the roller part being seated to be movable, and guiding the rolling of the roller part. Arranged and installed between a pair of rails, a plurality of protruding in a certain line horizontally or vertically It includes a rubber pad including a projection, wherein the conveyor unit, the conveyor bracket and one side is arranged side by side installed outside the one of the pair of rails is accommodated in the conveyor bracket, the other side is in the lower frame Installed in the chain holder is provided, it may include a chain that is bent or fully deployed in accordance with the reciprocating movement of the drive body.

According to the present invention, productivity can be improved by accurately transferring materials to a desired place, and functions such as vibration attenuation and shock absorption can be used to increase the life of various configurations.

1 is a view showing a material conveying apparatus of the present invention.
2 is a view showing a vibration damping unit.
3 is a view illustrating the first plate of FIG. 2.
4 is a view showing a shock absorbing part.
FIG. 5 is an enlarged view of the rail unit illustrated in FIG. 1.
6 is an enlarged view of the conveyor unit illustrated in FIG. 1.

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 material conveying apparatus of the present invention.

Referring to FIG. 1, the material conveying apparatus 1000 of the present invention includes a driving body 100, a rail unit 200, and a conveyor unit 400.

The material conveying apparatus 1000 of the present invention may be used when conveying materials to a desired place. The material conveying apparatus 1000 of the present invention may convey the loaded material while reciprocating along the path set by the rail part 200 formed on the bottom surface. That is, the material conveying apparatus 1000 of the present invention can improve productivity by accurately conveying and stopping the material to a desired place.

Although not shown in FIG. 1, the material transport apparatus 1000 of the present invention may further include a driving motor. The driving motor may move the driving body 100 along the rail part 200 by transmitting driving power to the driving body 100 when power is applied. Such a driving motor may be supplied with power from a power line communication network, a consumable battery, or a rechargeable battery.

Hereinafter, each structure of the material conveying apparatus 1000 of this invention is demonstrated concretely with reference to FIG.

The driving body 100 includes an upper frame 130, a lower frame 110 and a mounting plate 140.

The upper frame 130 constitutes an upper portion of the driving body 100, and a loading plate 140 may be formed on the upper surface. 1 illustrates that the upper frame 130 is formed in a square plate shape as an example, but is not limited thereto. The upper frame 130 may be changed and applied in various forms to enable stable loading of an object.

The loading plate 140 may provide a loading space of the object to be transferred. The loading plate 140 may be formed in a shape corresponding to the shape of the upper frame 130. In FIG. 1, the loading plate 140 is formed in a square plate shape as an example, but is not limited thereto. The loading plate 140 may be changed and applied in various forms to enable stable loading of an object. Loading plate 140 may be implemented as a rubber sheet of synthetic rubber or natural rubber to prevent the sliding of the object to be loaded.

A vertical frame 135 may be formed on at least one side of the upper frame 130. The vertical frame 135 may be vertically formed upward from at least one side of the upper frame 130. The vertical frame 135 enables the operation of the drive motor, and may be provided with a switch 137 to implement various functions of the material conveying apparatus 1000 of the present invention. In addition, since the vertical frame 135 is vertically formed from the plate-shaped upper frame 130, the operator can easily grip the vertical frame 135 to manually move the driving body 100.

The lower frame 110 constitutes a lower portion of the driving body 100, and may be connected to the lower side of the upper frame 130. The lower frame 110 may be disposed in correspondence with the arrangement of the rail unit 200 installed on the bottom surface from the lower side of the upper frame 130 installed on the bottom surface. For example, the lower frame 110 may be provided perpendicularly to both lower sides of the upper frame 130.

The lower frame 110 may be installed on the rail unit 200 to provide an installation space of the roller unit to enable the slide movement of the driving body. Since the lower frame 110 is spaced apart from the upper surface of the rail unit 200 by a predetermined distance by the roller unit, friction does not occur between the driving bodies 100 even when moving.

The roller unit may be installed to be rollable on the upper surface of the rail unit 200. That is, the roller unit may be installed to protrude at least a portion of the lower frame 110 so as to be spaced apart from the lower frame 110 and the rail unit 200 as well as to be rollable on the upper surface of the rail unit 200. have.

The roller unit may include a drive shaft and a roller. The drive shaft may be coupled to the drive motor to receive the driving force, and a pair of rollers may be provided, and the pair of rollers may be coupled to the drive shaft and disposed so that the outer circumferential surface thereof is rollable on the upper surface of the rail unit 200. That is, the roller may be rotated in the clockwise or counterclockwise direction by the drive motor, and thus, the driving body 100 may be reciprocated in one direction or the other direction along the rail portion 200. For example, the driving body 100 may be reciprocated between the loading position of the transfer object and the disembarkation position of the transfer object along the rail unit 200.

An anti-collision unit 115 may be formed on at least one side of the lower frame 110. The anti-collision unit 115 may serve to absorb the impact of the driving body 100. For example, one side of the lower frame 110 is a surface facing the loading position of the object to be transported, the other side of the lower frame 110 is a surface facing the loading position of the object to be conveyed, the collision prevention unit 115 is such a Is formed on one side or the other side of the lower frame 110, during the reciprocating movement of the drive body 100, to prevent the collision with other objects that may collide with one side or the other side of the lower frame 110, the impact by the collision Can absorb. To this end, the anti-collision unit 115 may be implemented as a rubber sheet of synthetic rubber or natural rubber.

The driving body 100 may further include a vibration damping unit. The vibration damping unit is installed at a portion where the upper frame 130 and the lower frame 110 are connected to each other to absorb vibrations generated between the frames.

As the vibration of the driving body 100 is transmitted to the loading plate 140 according to the reciprocating movement, the material loaded on the loading plate 140 may be damaged or may be separated from the loading plate 140. .

Accordingly, in the present invention, by installing a vibration damping unit in a portion where the upper frame 130 and the lower frame 110 is connected, the vibration as can be transmitted to the loading plate 140, etc. to reduce the problems as described above Can be solved.

2 is a view showing a vibration damping unit.

Referring to FIG. 2, the vibration damping unit 330 includes a support part 331, a vibration absorbing part 332, a connection plate 333, an extension plate 334, and an installation part 335.

The support part 331 is a first plate 331-1, a second plate 331-2, a third plate 331-3, and a fourth plate 331-4 that are formed of a plate having a “b” shape. ).

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 so as to face each other. As a form of the "+" form, and the vibration absorbing portion 332 is installed in the space spaced apart it can absorb the vibration transmitted to each plate.

The vibration absorbing part 332 is provided between each plate of the supporting part 331 and another plate, respectively, and absorbs a vibration.

In one embodiment, the vibration absorbing portion 332 may be formed by means of an elastic material such as a spring or rubber that can absorb shocks, provided that the vibration absorbing portion 332 is applied regardless of its name. This will be possible.

The connecting plate 333 is formed between the upper end of the first plate 331-1 and the upper part of the second plate 331-2 and the front end of the second plate 331-2 and the third plate 331-3. Between the front end, 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. It is installed so as to rotate two at each of the first plate (331-1), the second plate (331-2), the third plate (331-3) and the fourth plate (331-4) in the form of "+" Install the connection.

That is, the connecting plate 333 may not only interconnect the upper, lower, or front end of each plate to form an overall appearance, but also rotate each connecting portion to correspond to external vibrations or shocks. By adjusting the connection angle it is possible to more efficiently absorb vibration or shock.

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 connecting plate 333. It may be able to withstand some degree of external vibration or shock, but if critical vibration or critical shock is applied, it will not be able to hold it and the connection plate 333 installed on each plate will be damaged and will not be able to perform its original function. .

Accordingly, the connecting plate 333 according to the present invention, the first plate 331-1, the second plate 331-2, the third plate 331-3 and the fourth plate 331-4 By connecting to some extent possible, it is possible to maintain the fastening more efficiently to vibration or shock than the case described above.

The extension plate 334 includes an upper portion (ie, an upper wing) and a front end (ie, a front wing) of the first plate 331-1, an upper side and a front end of the second plate 331-2, and a third plate 331. -3) and two extending to the mounting portion 335 for each plate in the upper or lower direction from the lower and front ends of the fourth plate (331-4) and the front and bottom.

In one embodiment, the extension plate 334 may be rotated by the upper or lower portion is connected to the rotation shaft formed on the lower portion of the mounting portion 335.

The installation unit 335 is installed so that the upper or lower portions of the two extension plates 334 extending from each plate face each other and are rotatable, and the upper or lower portions of the upper or lower frames 320 of the upper frame 310. Installed in, for example, using fastening means such as screw bolts, welding or rivets.

3 is a view illustrating the first plate of FIG. 2.

Referring to FIG. 3, the first plate 331-1 may include a plate body 331-11, two first upper fastening grooves 331-12, a second upper fastening groove 331-13, and two The first shear fastening groove 331-14 and the second shear fastening groove 331-15 are included.

The plate body 331-11 is formed of a plate having a “b” shape, and forms two first upper fastening grooves 331-12 and second upper fastening grooves 331-13 on the upper wing, and shears Two first shear fastening grooves 331-14 and second shear fastening grooves 331-15 are formed in the blade.

The first upper fastening groove 331-12 is formed in the upper wing of the plate body 331-11 formed in the upward direction and connects and installs the front end of the connecting plate 333 to be rotatable.

The second upper fastening grooves 331-13 are formed between the first upper fastening grooves 331-12 to connect and install a lower portion of the extension plate 334 so as to be rotatable.

The first shear fastening grooves 331-14 are formed in the front blades of the plate body 331-11 formed in the shear direction, and connect the upper ends of the connection plates 333 so as to be rotatable.

The second shear fastening groove 331-15 is formed between the first shear fastening grooves 331-14 to connect and install the lower portion of the extension plate 334 so as to be rotatable.

In one embodiment, the extension plate 334, the second upper fastening groove 331 to allow the sliding movement in the vertical direction in the second upper fastening groove (331-13) or the second front fastening groove (331-15). -13 or the sliding groove 341 in the vertical direction can be formed in the lower portion connected to the second shear fastening groove (331-15).

In addition, the connection plate 333 may also form 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 configuration is provided to the second plate 331-2, the third plate 331-3, or the fourth plate 331-4 which differ only in its installation position. The same applies to the bar, the description of the second plate 331-2, the third plate 331-3 or the fourth plate 331-4 will be omitted.

The driving body 100 may further include a shock absorber. The shock absorber may be installed in the lower frame 110. In this case, the roller supporting the sliding movement of the driving body 100 may be installed in the lower frame 110 by the shock absorber.

The shock absorbing part may increase the life by absorbing the impact applied to the roller, etc. as the material is loaded on the driving body 100, and facilitates the installation and disassembly of the driving body 100 on the rail portion 200 and lock It can improve performance.

4 is a view showing a shock absorbing part.

Referring to FIG. 4, the shock absorbing unit 160 may be disposed in the lower frame 110 and installed at a vertex position of the lower frame 110, for example.

The shock absorbing unit 160 includes a shock absorbing bracket 161, a shock absorbing spring 163, and an actuation bolt 165.

The shock absorbing bracket 161 may provide an installation space of the roller unit 150. The roller unit 150 includes a roller 151 and a roller bracket 153. The roller 151 may be rotatably installed on the roller bracket 153, and at least a part thereof may protrude outward of the lower frame 110 to be slidably moved along the first rail 210. In this case, the shock absorbing bracket 161 and the lower frame 110 may also be formed with a through portion to allow at least a portion of the roller 151 to protrude.

The shock absorbing spring 163 has a leaf spring shape and may be disposed to be in contact with an inclined surface of the roller bracket 153 with an inclined tension portion. The shock absorbing spring 163 is in contact with the roller bracket 153 may be formed to move the roller bracket 153 up and down according to the spring tension. Therefore, when the roller bracket 153 is moved downward by the weight as the material is loaded on the loading plate 140, the roller bracket 153 and the roller 151 by the plate spring form of the shock absorbing spring 163 The amount of impact applied to the absorber can be absorbed to increase the life of the roller 151.

The actuation bolt 165 may be screwed into the shock absorbing spring 163. To this end, the shock absorbing bracket 161 may be formed with a working hole 162, the shock absorbing spring 163 may be formed with a screw hole 164. The lower frame 110 may also have a movement passage of the operation bolt 165 at a position corresponding to the operation hole 162.

The operation bolt 165 may be screwed to the shock absorbing spring 163 through the operating hole 162 and the screw hole 164 to move the shock absorbing spring 163 by rotation. At this time, when the shock absorbing spring 163 moves in the horizontal direction, the roller bracket 153 in contact with the shock absorbing spring 163 may also move in the vertical direction. That is, the movement direction of the shock absorbing spring 163 is changed by the inclined tension portion of the shock absorbing spring 163 and the inclined surface of the roller bracket 153 to move the roller bracket 153.

For example, when installing or disassembling the drive main body 100 on the rail part 200, the roller 151 can be moved downwards by rotating the operation bolt 165, and installation or disassembly is easy. . In addition, when the drive main body 100 is installed on the rail unit 200, the coupling between the rail unit 200 and the pair of rollers 151 is secured, and the drive main body is moved by the movement of the drive main body 100. The 100 may be prevented from being separated from the rail part 200.

FIG. 5 is an enlarged view of the rail unit illustrated in FIG. 1.

Referring to FIG. 5, the rail unit 200 includes a first rail 210 and a second rail 220 disposed side by side at a predetermined interval on the bottom surface, and a first rail 210 and a second rail ( It includes a rubber pad 250 installed between the 220.

The rail unit 200 serves to seat the driving body 100 to be movable. For example, since the bottom surface of the workshop, such as a production line or an assembly line, is formed as a flat surface, the rail body 200 may be fixedly installed on the upper surface thereof. Can be.

The first rail 210 and the second rail 220 are arranged side by side from the loading position of the object to be transported to the getting off position of the object to be conveyed, and tracked in the longitudinal direction between the loading position of the object to be transported and the position of the object to be transported. Can be formed. Since the configurations of the first rail 210 and the second rail 220 are the same, the first rail 210 will be described below.

The first rail 210 may be seated so as to be movable in the driving body 100, specifically, the roller unit, and guide the rolling of the roller unit. The lower end of the first rail 210 is fixed to the bottom surface, the upper end may be formed extending in the upper side in consideration of the shape of the roller and a guide protrusion for guiding the movement of the pair of rollers may be formed.

The brake unit 215 may be formed on at least one side of the first rail 210. The brake unit 215 is configured to protrude on the guide protrusion of the first rail 210, and may prevent the driving body 100 from being separated from the first rail 210.

The rubber pad 250 may be disposed between the first rail 210 and the second rail 220. The rubber pad 250 may be provided at the loading position side of the transfer target object or the off position of the transfer target object.

The rubber pad 250 may be formed of synthetic rubber or natural rubber. The rubber pad 250 may include a plurality of protrusions protruding in a predetermined line horizontally or vertically to prevent slippage. Therefore, it may serve as a stopper for controlling the sliding of the driving body 100 or may be used to temporarily lift the material before loading the material into the driving body 100.

6 is an enlarged view of the conveyor unit illustrated in FIG. 1.

Referring to FIG. 6, the conveyor unit 400 may include a conveyor bracket 410 and a chain 430 such that the driving body 100 reciprocates only as long as necessary along the rail unit 200.

The conveyor bracket 410 may be disposed in parallel with the first rail 210 and the second rail 220 on the outer side of the first rail 210 or the second rail 220. The conveyor bracket 410 may provide an accommodation space of the chain 430.

The chain 430 may include a plurality of link plates, and the plurality of link plates may be connected to each other so that the link plates may be refracted with each other by a fixing pin in an overlapping state.

One side of the chain 430 may be installed at the lower frame 110, and the other side of the chain 430 may be installed at the conveyor bracket 410. To this end, the lower frame 110 may be provided with a chain holder 117.

For example, in a state in which the driving body 100 is located at one side of the rail unit 200, the chain 430 may be accommodated in the conveyor bracket 410 in a fully extended state. When the driving body 100 is moved from one side of the rail unit 200 to the other side, the chain 430 may be bent and the other side of the chain 430 may be moved in the opposite direction along the lower frame 110. When the driving body 100 is completely moved to the other side of the rail portion 200, the chain 430 is in a completely inverted state, the drive body 100 is the rail portion by the entire length of the chain 430 Do not depart from 200.

The conveyor unit 400 may further include an air injection module 415. The air injection module 415 may remove foreign substances from the conveyor bracket 410 and the chain 430 by injecting air into the conveyor bracket 410.

As described above, the material conveying apparatus 1000 of the present invention can improve productivity by accurately conveying materials to a desired place, and can increase the service life of various components by having functions such as vibration attenuation and shock absorption.

As such, at least some components of the material conveying apparatus 1000 according to the present invention may be implemented as a plastic sheet manufactured by the plastic sheet manufacturing method according to an embodiment of the present invention as follows.

Plastic sheet manufacturing method according to an embodiment of the present invention is 100 parts by weight of polyethylene terephthalate (polyethylene telephthalate, PET) resin, 2 to 4 parts by weight of polyurethane (polyurethane) dispersant, polyethylene dioxythiophene polystyrene sulfonate (polyethylene dioxythiophene polystyrene sulfonate) 0.1-0.2 parts by weight, polystyrolsulfonic acid, 3-5 parts by weight of N-methyl-2-pyrrolidone, triethyl amine 0.1 A first step of preparing a mixed composition by mixing 0.3 parts by weight, 42 to 45 parts by weight of isopropyl alcohol, and 50 to 52 parts by weight of water; Preheating the mixed composition; A third step of removing moisture of the preheated mixed composition; A fourth step of heating the mixed composition from which the moisture is removed; A fifth step of removing foreign substances from the heated mixed composition; A sixth step of stretching the mixture composition from which foreign substances have been removed while cooling to prepare a plastic sheet; And a seventh step of applying silicone to the plastic sheet and then drying it. The present invention can prepare a plastic sheet excellent in moldability and durability through mixing various additives to the conventional PET resin, preheating, dehumidification, heating and cooling.

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

PET resin is a basic resin, has excellent thermal stability and high crystallinity, can be recycled, and can be used in the form of a master batch. Polyurethane dispersants serve to improve the miscibility with other components. Polyethylene dioxythiophene polystyrene sulfonate, polystyrolsulfonic acid, N-methyl-2-pyrrolidone and triethyl amine Functions as an antistatic agent. Since the plastic sheet for manufacturing a plastic container is generally an electrical insulator, static electricity is generated by frictional charging, and if it is severely caused by discharge or electric conduction, it may lead to an explosion or fire, so it is preferable to add a charging agent. . Isopropyl alcohol acts as an antifogging agent. The antifogging agent can suppress water condensation caused by water vapor which may occur when the plastic container is manufactured using the plastic sheet to store fruits and the like.

For example, the above-described raw materials are based on 100 parts by weight of polyethylene terephthalate (polyethylene telephthalate, PET) resin, 2 to 4 parts by weight of polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate 0.1 0.2 parts by weight, 0.4-0.6 parts by weight of polystyrolsulfonic acid, 3-5 parts by weight of N-methyl-2-pyrrolidone, triethyl amine It is preferable to mix 0.1-0.3 weight part, 42-45 weight part of isopropyl alcohol, and 50-52 weight part of water. When added outside the above range, various problems may occur. In particular, in the case of the antistatic agent, when mixed over each range, the plastic surface to be produced may be sticky, the sealing and printability may be reduced, in the case of white plastic, yellowing may occur.

In addition, the first step may further mix various additional ingredients with the raw materials to enhance the functionality of the plastic sheet.

For example, the boron-based binder may be further mixed. The boron (B) -based binder is used to combine the respective components, the boron-based binder is preferably mixed in 2 to 10 parts by weight with respect to 100 parts by weight of PET resin. When the content of the boron-based binder is less than 2 parts by weight, the raw materials and the like cannot be effectively bound, and when the content of the boron-based binder exceeds 70 parts by weight, it is uneconomical.

For example, the garlic extract may be further mixed. Garlic extract is a natural adhesive component, and functions as a binder to improve the compatibility with other components along with the boron-based binder. The garlic extract is peeled and crushed garlic, 2 to 3 parts by weight of water per 1 part by weight of garlic, heated at 80-100 ℃ for 5 hours or more, the liquid component is extracted and filtered, and then filtered It can be prepared by concentrating the liquid component at 55 ~ 60 ℃. Garlic extract is preferably mixed 5 to 10 parts by weight with respect to 100 parts by weight of PET resin. If the content of the garlic extract is less than 5 parts by weight, the raw materials may not be properly entangled and the surface may not be formed evenly during plastic sheet production.If the content of the garlic extract is more than 10 parts by weight, the dispersibility and mixing properties of each component are rather There is a risk of deterioration.

For example, the apatite powder may be further mixed. The apatite powder functions as a filler and can maintain the shape of the plastic sheet to improve workability, maintain strength, and improve corrosion resistance. Apatite is an inorganic substance present in bone, and in order to use it as a filler, it is important to have a small particle size, high residual amount of carbonic acid, and low crystallinity. Preferably the size of the apatite granules is 200-400 μm. For this purpose, it is important to go through the sintering process at 500 ~ 700 ℃. When sintering at less than 500 ℃, there is a disadvantage that the size and crystallinity of the desired granules can not be obtained, when sintering above 700 ℃ has a disadvantage that the residual amount of carbonic acid groups is low, the crystallinity is too high. The apatite powder is preferably mixed at 20 to 30 parts by weight with respect to 100 parts by weight of the PET resin.

If the content of the apatite powder is less than 20 parts by weight, there is a disadvantage that the adhesive strength is lowered, and if it exceeds 30 parts by weight, the impact resistance is weakened.

For example, the cork powder may be further mixed. Cork powder, together with the apatite powder, can improve the durability of the plastic sheet. Cork powder can be prepared by removing the bark of the oyster oak, and then grinding. As cork powder, it is preferable to use finely ground particles filtered into a mesh of 400 mesh or more for mixing with PET resin and the like. Cork powder is preferably mixed in 15 to 25 parts by weight based on 100 parts by weight of PET resin. If the cork powder is less than 15 parts by weight, the degree of improvement of durability is insignificant, and if it exceeds 25 parts by weight, voids may be formed inside the plastic during manufacture, so durability may be rather deteriorated.

For example, the hermit extract may be further mixed. The hermit extract not only acts as an antimicrobial agent, but also suppresses yellowing that may occur in white plastic sheets. Rumex crispus is a plant in the genus Rumex that grows in Korea. The hermit is a perennial herb that grows well in humid places around the country and uses young shoots for edible in the private sector. It is used as an adjuvant therapy for tumors and cancer. The hermit extract extracted from the hermit has antimicrobial and antioxidant effects against various microorganisms, and when used in combination with a small amount of sulfur, it has an excellent effect on skin itching. It is reported that useful components of the oxalic acid include saponins, tannins, flavonoids, essential oils and anthraquinone derivatives such as chrysophanol and emodin. The hermit extract is washed well with the collected hermit, dried in the shade and broken up into ground parts (except roots) and underground parts (root parts), and extracted with 80% (v / v) methanol for 3 days. After immersion, the extract can be filtered with a membrane filter (porosity 0.5 μm) to separate the solids, and the methanol extract can be prepared by concentrating at 50 ° C. using a rotary evaporator. The hermit extract is preferably mixed at 3 to 8 parts by weight based on 100 parts by weight of the PET resin. When the content of the hermit extract is less than 3 parts by weight, the antimicrobial activity is insignificant in the anti-yellowing effect, when it exceeds 8 parts by weight is uneconomical.

The second step is to preheat the mixed composition, by applying heat to the mixed raw materials to stably mix the raw materials.

The third step is a dehumidification step of removing the moisture present in the preheated mixed composition, dehumidification is preferably made in a temperature range of 150 ~ 180 ℃. If it is below or exceeding the above range, dehumidification is insufficient or may adversely affect the durability of the plastic.

The fourth step is a step of heating the mixed composition from which moisture is removed, and after melting the mixed composition, the heating temperature is preferably controlled to 260 to 270 ° C.

The fifth step is to remove foreign substances in the heated mixed composition, and may remove foreign matters inside the mixed composition by passing through a mesh-shaped screen.

The sixth step is a step of stretching while cooling the mixed composition from which foreign substances have been removed to prepare a plastic sheet, and stretching in two steps using a cooling roll. The primary stretching is made in the longitudinal direction through the cooling roll maintained at 16 ~ 17 ℃, the secondary stretching is made in the width direction (vertical direction in the longitudinal direction) through the cooling roll maintained at 20 ~ 23 ℃. The reason for raising the temperature of the secondary stretching above the primary stretching temperature is to prevent the plastic sheet to be solidified and to deteriorate in formability, and to improve the durability and formability of the plastic sheet by alternately stretching the longitudinal direction and the width direction. You can.

In the seventh step, the silicone sheet is applied to the plastic sheet and then dried, and the silicon sheet is coated and finished to obtain an antistatic effect. It is preferable to apply | coat silicone using the coating liquid diluted to the concentration range of 5-25%, and apply | coat silicone, and it is preferable to dry at 160-215 degreeC. In addition, it is preferable to mix the above-mentioned anti-fogging agent component with the coating liquid containing silicone in order to suppress the water phenomenon formed in the manufactured plastic container.

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.

[Examples and Comparative Examples]

To prepare a mixed composition according to the composition of Table 1, after the preheating, dehumidification, heating, removing foreign matters, cooling and stretching, drying step to prepare a plastic sheet to prepare an example and a comparative example. Each material used commercially available material, and for the garlic extract and the hermit 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 secondly stretched to prepare a 10 mm thick plastic sheet, and the uniformity of the sheet surface was measured and described in Table 2 below.

At this time, the primary stretching was 16 ° C, and the secondary stretching was 21 ° C. Uniformity was measured using a laser sensor (N2 laser, oscillation wavelength 337.1nm, UDHO Laser. LTD., Japan), and 30 surface points were randomly selected to measure their surface roughness (standard deviation was used. , ± 0.3 or less were uniform, and more than ± 0.3 was evaluated as nonuniform. At this time, Examples 1-3 were extended in the width direction after extending | stretching in the longitudinal direction, and the comparative example extended | stretched only in the longitudinal direction.

TABLE 2

As in Table 2, in the case of Examples 1 to 3, both uniformity was superior to the comparative example.

Experimental Example 2: Torsion Test

The compositions of Examples 1 to 3 and Comparative Examples were secondly stretched to prepare a plastic sheet having a thickness of 2 mm, and then molded to prepare 100 plastic products, evaluated for completeness, and are shown in Table 3 below. At this time, Examples 1-3 were extended in the width direction after extending | stretching in the longitudinal direction, and the comparative example extended | stretched only in the longitudinal direction.

TABLE 3

As shown in Table 3, in Examples 1 to 3, more than 90% of the normal product can be made, but the comparative example has a relatively high defective rate.

Experimental Example 3: Yellowing Test

The compositions of Examples 1 and 3 were secondly stretched to prepare plastic sheets having a thickness of 2 mm, and then molded to prepare 100 white plastic products, which were visually observed for discoloration after 10 months, and are shown in Table 4 below. It was. At this time, the part which turned yellow was evaluated as defect.

TABLE 4

As shown in Table 4, in the case of Example 3, it was confirmed that almost all products did not discolor. On the other hand, Example 1 obtained good results, but the discoloration rate was relatively higher than that of Example 3.

Experimental Example 4: Antifog Test

After stretching the composition of Comparative Example and Example 3 to prepare a plastic sheet having a thickness of 2mm, and then molded by molding 100 white plastic products, after storing the spinach inside, after 1 day visually observed the inside It is shown in Table 5 below.

TABLE 5

As in Table 5, in the case of Example 3, almost no water droplets were formed, the comparative example was confirmed that the water droplets are enough to be identified with the naked eye.

Although the above has been described with reference to the embodiments, those skilled in the art will understand that various modifications and changes can be made without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

1000: material conveying device
100: drive main body
110: lower frame
115: collision avoidance
130: upper frame
135: vertical frame
137: switch
140: loading plate
200: rail
210: first rail
220: second rail
250: rubber pad
400: conveyor section
410: conveyor bracket
430: chain

Claims (2)

A driving body providing a loading space of the object to be transferred;
A rail unit fixedly installed on a bottom surface, the driving body seated to be movable, and guiding a rolling movement of the driving body; And
It is fixed side by side with the rail, and includes a conveyor for limiting the movement of the drive main body so that the drive main body reciprocating only by the length along the rail,
The drive body,
An upper frame constituting an upper portion of the driving body and having a loading plate for providing a loading space for a transfer object;
A vertical frame vertically upwardly formed from at least one side of the upper frame; And
A lower frame disposed on the lower side of the upper frame in correspondence with the arrangement of the rail part and providing an installation space of a roller part for moving the driving body along the rail part;
The rail unit,
As long as it is installed side by side at a predetermined interval on the bottom surface to form a track between the loading position of the object to be transported and the disengagement position of the object to be transported, the roller part is seated to be movable, and guides the rolling of the roller part. Pair of rails; And
Arranged and installed between the pair of rails, comprising a rubber pad including a plurality of protrusions protruding in a predetermined line in a horizontal or vertical direction,
The conveyor unit,
A conveyor bracket disposed side by side on an outer side of one of the pair of rails; And
One side is accommodated in the conveyor bracket, the other side is installed in the chain holder provided in the lower frame, and includes a chain bent or fully unfolded according to the reciprocating movement of the drive body,
The drive body is a part of the configuration
100 parts by weight of polyethylene telephthalate (PET) resin, 2 to 4 parts by weight of polyurethane dispersant, 0.1 to 0.2 parts by weight of polyethylene dioxythiophene polystyrene sulfonate, polystyrene sulfonic acid (polystyrolsulfonic acid), 3 to 5 parts by weight of N-methyl-2-pyrrolidone, 0.1 to 0.3 parts by weight of triethyl amine, isopropyl alcohol 42 To 45 parts by weight and 50 to 52 parts by weight of water are mixed, 2 to 10 parts by weight of boron-based binder, 5 to 10 parts by weight of garlic extract, 20 to 30 parts by weight, based on 100 parts by weight of the polyethylene terephthalate (polyethylene telephthalate, PET) resin. A first step of further mixing the apatite powder by weight part, 15-25 parts by weight cork powder, and 3-8 parts by weight of the hermit extract to prepare a mixed composition; Preheating the mixed composition; A third step of removing moisture of the preheated mixed composition in a temperature range of 150 to 180 ° C; A fourth step of heating the mixed composition from which moisture has been removed to 260-270 ° C .; A fifth step of removing the foreign matter by passing the heated mixed composition through a screen in the form of a mesh; While stretching the mixed composition from which foreign substances have been removed, the primary drawing is stretched in the longitudinal direction through a cooling roll maintained at 16 to 17 ° C., and the stretching is performed in the vertical direction in the longitudinal direction through a cooling roll maintained at 20 to 23 ° C. A second step of manufacturing the plastic sheet by second drawing; And a seventh step of applying silicon to the plastic sheet and then drying the plastic sheet.
Material transfer device. delete

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