KR102077340B1 - Automatic weighing device - Google Patents

Abstract

The present invention relates to an automatic weighing apparatus which is embodied so that a metered object in powder form can be supplied to a packaging container by weighing a certain amount while continuously receiving the metered object in powder form. The automatic weighing apparatus of the present invention comprises: a storage unit which receives and stores the metered object to be a target of metering, and discharges the metered object in the downward direction corresponding to the weight input from a user; and a metering unit installed in a lower side of an outlet through which the metered object is discharged from the storage unit to meter the weight of the metered object to be discharged in real time to notify the storage unit.

Description

Automatic Weighing Device {AUTOMATIC WEIGHING DEVICE}

The present invention relates to an automatic weighing apparatus, and more particularly, to an automatic weighing apparatus implemented to be supplied to a packaging container by weighing in a predetermined amount while continuously receiving a weighed product in powder form.

In general, the weighing hopper is used to measure the flour or rice flour (hereinafter referred to as 'mixed powder') mixed with two or more powders introduced into the internal space of the hopper body, and reaches a predetermined weight. By the signal, the inflow of the mixed powder is stopped, the controller opens the butterfly valve on the lower outlet, and the mixed powder is discharged. The mixed powder discharged through the outlet is sent to the mixer or kneader to perform the mixing operation in the mixer or kneader. It is a device that weighs and mixes the powder during the process, and then repeats the process when the mixing is completed.

Such a measuring hopper is a device that merely measures the mixed powder flowing into the measuring hopper and discharges it through the outlet when a certain amount is reached. The above powder is added to the mixing powder through the zero gravity mixer, the holding hopper and the working scaffold, which is installed in the final stage in the production process of the mixed powder which discharges the mixed powder flowing through the conveying piping facility.

Conventionally, in order to produce a mixed powder, a gravity-free mixer, a holding hopper, and a work scaffold have to be installed, and thus, the installation of the device is complicated, takes up a lot of work space, does not facilitate space utilization, and has a high installation cost.

In addition, in the process of producing mixed powder, it takes less time to discharge to the weighing hopper from the cyclo or backdump compared to the mixing time of the blender or kneader. There is such a problem that the workability is deteriorated.

In the meantime, the above-described background art is technical information possessed by the inventor for the derivation of the present invention or acquired in the derivation process of the present invention, and is not necessarily known technology disclosed to the general public before the application of the present invention. .

Korea Patent Registration No. 10-1635843 Korea Patent Registration No. 10-0974879

One aspect of the present invention provides an automatic weighing device implemented to be supplied to the packaging container to measure a certain amount while receiving a continuous measurement of the powder form.

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

Automatic weighing apparatus according to an embodiment of the present invention, the storage unit for receiving and storing the weighed object to be weighed, the storage unit for discharging the weighed amount corresponding to the weight input from the user in the downward direction; And a metering unit which is installed under the discharge port from which the measured object is discharged from the storage unit and measures the weight of the measured object discharged in real time and notifies the storage unit.

In one embodiment, the storage unit, the hopper unit for receiving the to-be-measured object to be weighed from the to-be-measured object supplying device to store in the internal space; At least one stirring pillar is installed in the vertical direction from the center of the inner space of the hopper to rotate, and extending from the stirring column to the inner surface of the hopper portion to rotate in accordance with the rotation of the stirring column to agitate the measured object Stirring section provided with stirring blades; A sensing sensor line installed in an internal space of the hopper to sense an amount of the measured object contained in the hopper; A discharge part disposed below the hopper part and discharging the measured object contained in the hopper part to a packaging container placed on the upper side of the metering part; And controlling the supply of the to-be-measured supply device so that the to-be-measured object stored in the hopper is kept constant by monitoring the amount of the to-be-measured object sensed through the sensing line in real time. When the packaging container is placed on the upper side of the weighing unit, the driving unit controls the discharge unit to discharge the measured object, and stops driving the discharge unit when the weight notified from the weighing unit reaches a preset weight. And a discharge control unit for discharging, and the hopper unit includes: a body configured to receive an object to be measured and store it in an internal space; Four legs spaced apart at regular intervals from each other and extending downward from the outside of the body to support the body; A first shelf having respective corners installed on each of the four legs; A second shelf spaced apart in an upward direction on an upper side of the first shelf and on which the weighing unit is placed; An elevating part installed between the first shelf and the second shelf to lift or lower the second shelf in an up and down direction; And a plurality of vibration damping parts disposed between the first shelf and the second shelf so as to attenuate the vibration transmitted from the second shelf, wherein the vibration damping part is formed of a plate having a “b” shape. A holding part including a first plate, a second plate, a third plate and a fourth plate; A vibration absorbing part installed between each plate of the support part and another plate to absorb vibration; Between the top of the first plate and the top of the second plate, between the front end of the second plate and the front end of the third plate, between the bottom of the third plate and the bottom of the fourth plate, and the fourth plate Two connecting plates each provided 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 end of the first plate, the upper and the front end of the second plate, the front and the lower end of the third plate, and the lower and front end of the fourth plate, two plates are formed in each of the upper or lower direction Extension plates; Four rotating parts connected to each other so that an upper part or a lower part of two extension plates extending from each plate face each other and are rotatable; And two support bars which are provided with an upper side or a lower side of the rotating part and are supported by the rotating part and spaced apart from each other in the vertical direction to form an interspace therebetween, wherein the discharge part is formed from a lower side of the hopper part. A horizontal discharge pipe extending in a horizontal direction; A conveyor screw installed in a longitudinal direction in the horizontal space of the horizontal discharge pipe and rotating to move an object to be supplied from the hopper in a front direction of the horizontal discharge pipe; And a vertical discharge pipe extending from the front end of the horizontal discharge pipe in a lower right angle to drop the measured object moved to the front end of the horizontal discharge pipe in the direction of the packaging container.

According to one aspect of the present invention, the installation cost can be significantly reduced by eliminating the intermediate equipment according to the measurement of the measured object, and the installation space can be reduced by omitting the equipment, thereby increasing the space utilization.

In addition, since a series of operations such as mixing, metering, and discharge in the hopper is made, as the working time is shortened, time waste may be reduced and workability may be improved.

1 is a view showing a schematic configuration of an automatic metering device according to an embodiment of the present invention.
2 and 3 are views illustrating the storage of FIG. 1.
4 is a view illustrating the hopper of FIG. 2.
5 is a view illustrating the vibration damping unit of FIG. 4.
FIG. 6 is a view illustrating a first plate of FIG. 5.
7 is a view illustrating the discharge part of FIG. 2.
8 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to an embodiment of the present invention.
9 is a perspective view showing a specific configuration of the hydraulic jack shown in FIG.
FIG. 10 is a conceptual view illustrating an internal configuration and an operating principle of the hydraulic jack illustrated in FIGS. 8 and 9.
11 is a view showing the outer cylinder and the connecting portion.
12 is a perspective view showing a movable lifting device equipped with a hydraulic jack according to another embodiment of the present invention.
13 to 15 is a perspective view showing a hydraulic jack according to another embodiment of the present invention.
Figure 16 is a perspective view of a mobile lifting device equipped with a hydraulic jack according to another embodiment of the present invention.
17 is a flowchart illustrating a plastic sheet manufacturing method for producing a plastic sheet of the present invention.
FIG. 18 is a view illustrating a load distribution part of FIG. 16.

DETAILED DESCRIPTION OF THE INVENTION 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 is to be understood that the various embodiments of the 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 is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

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

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

Referring to FIG. 1, the automatic metering apparatus 10 according to an embodiment of the present invention includes a storage unit 100 and a metering unit 200.

The storage unit 100 receives and stores the weighed object 1 to be weighed from the supply device 3 installed outside, and corresponds to a weight (for example, 1 kg to 5 kg) input from the user. The quantity to be measured 1 is discharged in the downward direction in which the metering unit 200 is installed (that is, the direction in which the packaging container 2 is located).

Here, the to-be-measured object (1) refers to a powdery substance, for example, edible flours such as red pepper powder, rice flour, flour or soy flour, as well as non-edible flours such as beets. You may.

The metering unit 200 is installed under the discharge port from which the measured object 1 is discharged from the storage unit 100 and measures the weight of the measured object 1 discharged in real time to notify the storage unit 100. do.

In one embodiment, the weighing unit 200 may be formed of a plate-shaped scale that can measure the weight of the object using a load cell, the weighed object 1 contained in the packaging container 2 placed on the upper side. The weight of real time can be measured and notified to the storage unit 100.

The automatic weighing apparatus 10 having the above-described configuration can greatly reduce the installation cost by omitting intermediate equipment according to the measurement of the weighed object, and increase the space utilization because the installation space is also reduced by omitting the equipment. It becomes possible.

In addition, since a series of operations such as mixing, metering, and discharge in the hopper is made, as the working time is shortened, time waste may be reduced and workability may be improved.

2 and 3 are views illustrating the storage of FIG. 1.

Referring to FIG. 2, the storage unit 100 includes a hopper unit 110, a stirring unit 120, a sensing line unit 130, a discharge unit 140, and a discharge control unit 150.

The hopper unit 110 receives the to-be-measured object 1 to be weighed from the to-be-measured object supply device and stores it in the internal space, and the stirring unit 120 is installed in the internal space to be measured. It is made to stir (1), and discharges the measured object 1 contained in the internal space through the discharge part 140 installed in the lower side.

Referring to FIG. 3, the stirring unit 120 is a stirring column 121 installed and rotated in a vertical direction at the center of the internal space of the hopper unit 110, and the stirring unit 121 of the hopper unit 110. It is provided with at least one stirring blade (122-1, 122-2) is formed to extend to the inner surface to rotate in accordance with the rotation of the stirring column 121 to agitate the object (1).

At this time, the stirring blades 122-1 and 122-2 are hopper portions facing the inner surface of the hopper portion 110 so that the workpiece 1 buried on the inner surface of the hopper portion 110 can be wiped off. The cleaning vanes 123-1 and 123-2 extending in the vertical direction corresponding to the inclination angle of the inner surface of the 110 may be formed at the respective ends.

The sensing line unit 130 is installed in the internal space of the hopper unit 110 and detects an amount of the measured object 1 contained in the hopper unit 110 and notifies the discharge control unit 150 to the hopper unit ( It is possible to prevent the metered object 1 from being supplied beyond the capacity of the internal space of 110.

The discharge part 140 is installed below the hopper part 110 and discharges the measured object 1 contained in the hopper part 110 to the packaging container 2 placed on the upper side of the metering part 200. .

The discharge control unit 150 monitors the amount of the measured object 1 detected through the sensing line 130 in real time, so that the measured object 1 stored in the hopper 110 may be kept constant. The supply of the measured object 1 from the metered object supply device 3 is controlled, the driving of the stirring unit 120 is controlled, and when the packaging container 2 is placed on the upper side of the metered unit 200, the discharge unit ( After driving the measured object 1 to be discharged by driving the 140, the driving of the discharge unit 140 is stopped when the weight notified from the weighing unit 200 reaches a preset weight, that is, a weight set by the user. Let's do it.

4 is a view showing a portion of the hopper portion of FIG.

Referring to FIG. 4, the hopper unit 110 may include a body 111, four legs 112, a first shelf 113, a second shelf 114, and a lift unit (not illustrated in the drawings for convenience of description). ) And a plurality of vibration damping units 500.

The body 111 is formed in a conical shape, the diameter of which decreases toward the lower side, receives the measured object 1 and stores it in the internal space, and four legs 112 are installed on the outside and supported.

The legs 112 are spaced apart from each other at regular intervals, extend downward from the outside of the body 111 to support the body 111, and the edge of the first shelf 113 is fixedly installed.

Each corner of each of the four legs 112 is provided with the first shelf 113, and the second shelf 114 is installed at an upper side by a lifting unit provided at an upper side thereof.

The second shelf 114 is installed on the upper side of the first shelf 113 by an elevating unit so as to be spaced apart in an upward direction, and the metering unit 200 is placed on the upper side thereof.

The lifting unit is provided between the first shelf 113 and the second shelf 114 to raise or lower the second shelf 114 in the vertical direction.

In one embodiment, the lifting unit may be formed of a lifting device such as a hydraulic jockey, etc., but may be applied to any device for lifting up and down without regard to its name.

The vibration damping unit 500 is installed between the first shelf 113 and the second shelf 114 to attenuate the vibration transmitted from the second shelf 114.

However, the first shelf 113, the second shelf 114, the lifting unit and the plurality of vibration damping units 500 may be provided to the movable lifting apparatuses 20, 30, and 40 provided with the hydraulic jack described below with reference to FIG. 8. Can be replaced.

That is, the movable lifting devices 20, 30, and 40 provided with the hydraulic jack described below with reference to FIG. 8 may be installed in the space between the legs of the four legs 112.

5 is a view illustrating the vibration damping unit of FIG. 4.

Referring to FIG. 5, the vibration damping unit 500 is installed between the first shelf 113 and the second shelf 114 to attenuate the vibration transmitted from the second shelf 114. A part 510, a plurality of vibration absorbing parts 520, a plurality of connecting plates 530, a plurality of extension plates 540, four pivoting parts 550, and two support bars 560.

The support part 510 includes a first plate 511, a second plate 512, a third plate 513, and a fourth plate 514 formed of a plate having a “b” shape.

At this time, the first plate 511, the second plate 512, the third plate 513 and the fourth plate 514 are spaced apart from each other to face each other, so as to form an external shape having a “+” shape as a whole. The vibration absorbing unit 520 may be installed in each space spaced apart from each other to absorb vibrations transmitted to each plate.

The vibration absorbing part 520 is provided between each plate of the supporting part 510 and another plate, respectively, and absorbs vibration.

In one embodiment, the vibration absorbing unit 520 may be formed by a means of elastic material such as a spring or rubber that can absorb the shock, provided that the shock absorbing material is applied regardless of its name. This will be possible.

The connecting plate 530 may include a third plate 513 between the upper part of the first plate 511 and the upper part of the second plate 512, between the front end of the second plate 512 and the front end of the third plate 513. The first plate 511 is rotatably installed between the bottom of the bottom plate and the bottom of the fourth plate 514 and between the front end of the fourth plate 514 and the front end of the first plate 511. The second plate 512, the third plate 513, and the fourth plate 514 are connected and installed in a “+” shape.

That is, the connecting plate 530 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, the vibration or shock can be absorbed more efficiently.

That is, when the first plate 511, the second plate 512, the third plate 513 and the fourth plate 514 are fixed to each other by the connecting plate 530, the external vibration or impact to some extent It may be able to withstand, but when a critical vibration or a critical shock is applied, the connection plate 530 connected to each plate will be broken and it will not be able to perform its original function.

Accordingly, the connecting plate 530 according to the present invention, by connecting the first plate 511, the second plate 512, the third plate 513 and the fourth plate 514 to some extent possible movement. In this case, the fastening can be maintained more efficiently to vibration or shock than the case described above.

The extension plate 540 may include an upper part (ie, an upper blade) and a front end (ie, a front wing) of the first plate 511, an upper part and a front end of the second plate 512, and a front end of the third plate 513. The lower portion and the second portion extending from the lower portion and the front end of the fourth plate 514 to the rotating portion 550 for each plate in the upward or downward direction.

In one embodiment, the extension plate 540 may be rotated by the upper or lower is connected to the rotating shaft formed on one side of the rotating part 550.

In one embodiment, the extension plate 540, the second upper fastening groove (5113) or the second upper fastening groove (5113) or the second upper fastening groove (5113) or the second upper fastening groove (5113) to allow the sliding movement in the vertical direction A sliding groove 541 (see FIG. 17) in the vertical direction may be formed at a lower portion connected to the shear fastening groove 5115.

Rotating portion 550 is connected to the upper or lower portion of the two extending plate 540 extending from each plate facing each other and rotatable, and installed on each inner side of the support bar 560 facing each other ( Fastening means such as, for example, screw bolts, welding or rivets).

The support bar 560 is provided with an upper side or a lower side of the pivoting part 550, and the second shelf allows the support bar 560 positioned above to attenuate the vibration transmitted from the second shelf 114. A space where the support bar 560 positioned opposite to the lower side of the 114 and positioned below is fixed to the upper side of the first shelf 113 and is supported by the pivoting unit 550 and spaced apart in the vertical direction. To form the respective components of the vibration damping unit 500 are installed.

The vibration damping unit 500 having the configuration as described above can effectively attenuate the vibration transmitted from the second shelf 114, thereby improving the durability of each of the configurations of the present invention and improving the life of the apparatus.

FIG. 6 is a view illustrating a first plate of FIG. 5.

Referring to FIG. 6, the first plate 511 may include a plate body 5111, two first upper fastening grooves 5112, a second upper fastening groove 5113, and two first shear fastening grooves 5114. And a second shear fastening groove 5115.

The plate body 5111 is formed of a plate of “b” shape, and forms two first upper fastening grooves 5112 and a second upper fastening groove 5113 on the upper wing, and two first upper fastening grooves on the front wing. The shear fastening groove 5114 and the second shear fastening groove 5115 are formed.

The first upper fastening groove 5112 is formed in the upper wing of the plate body 5111 formed in the upward direction and connects and installs the front end of the connecting plate 530 so as to be rotatable.

The second upper fastening groove 5113 is formed between the first upper fastening grooves 5112 to connect and install a lower portion of the extension plate 540 so as to be rotatable.

The first shear fastening grooves 5114 are formed at the front end blades of the plate body 5111 formed in the shear direction to connect the upper portions of the connection plates 530 so as to be rotatable.

The second shear fastening groove 5115 is formed between the first shear fastening grooves 5114 to connect and install the lower portion of the extension plate 540 to be rotatable.

In one embodiment, the extension plate 540, the second upper fastening groove (5113) or the second upper fastening groove (5113) or the second upper fastening groove (5113) or the second upper fastening groove (5113) to allow the sliding movement in the vertical direction A sliding groove 541 in the up and down direction may be formed at a lower portion connected to the shear coupling groove 5115.

In addition, the connection plate 530 may also form a sliding groove having the same structure as the sliding groove 541 of the extension plate 540 described above.

The first plate 511 having the configuration as described above may be equally applied to the second plate 512, the third plate 513, or the fourth plate 514, which differ only in its installation position. The description of the second plate 512, the third plate 513, or the fourth plate 514 will be omitted.

7 is a view illustrating the discharge part of FIG. 2.

Referring to FIG. 7, the discharge unit 140 includes a horizontal discharge pipe 141, a conveyor screw 142, and a vertical discharge pipe 143.

The horizontal discharge pipe 141 is formed to extend in the horizontal direction from the lower side of the hopper portion 110, the conveyor screw 142 is provided in the longitudinal direction in the inner space, the vertical discharge pipe 143 is installed in the lower vertical direction in the front end do.

The conveyor screw 142 is installed in the inner space of the horizontal discharge pipe 141 in the longitudinal direction, and horizontally measures the object 1 supplied from the hopper part 110 by a blade installed spirally along a rotating central axis. It moves in the front direction of the discharge pipe (141).

The vertical discharge pipe 143 extends from the front end of the horizontal discharge pipe 141 to the lower right angle direction and drops the measurement object 1 moved to the front end of the horizontal discharge pipe 141 toward the packaging container 2.

8 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to an embodiment of the present invention.

The movable lifting device 20, 30, 40 equipped with the hydraulic jack described in FIG. 8 and hereinafter, has a first shelf 113, a second shelf 114, a lifting unit and a plurality of vibrations as described above in FIG. A device that can be disposed in the space between the legs 112 in place of the attenuator 500, the metering unit 200 is mounted on the upper side of the upper frame 320, the metering unit 200 according to the user's needs ) Height can be adjusted.

Referring to FIG. 8, the movable lifting device 20 provided with the hydraulic jack according to an embodiment of the present invention may include a lower frame 310, an upper frame 320, and a hydraulic jack 400.

The lower frame 310 is a member constituting the lower surface of the movable lifting device 20. The lower surface of the lower frame 310 is provided with a moving means 900, the movable lifting device 20 equipped with a hydraulic jack according to the present invention can be guaranteed mobility.

At least one pillar 340 may be disposed on the upper surface of the lower frame 310.

As shown, four pillars 340 may be provided in the corner portion of the lower frame 310, but is not limited to the number of installation.

The pillar 340 may be provided in a form in which the length may vary. For example, the pillar 340 may include an outer pillar having a first diameter and an inner pillar having a diameter smaller than the first diameter and inserted into the outer pillar and sliding along a length direction of the outer pillar. In this case, the overall length of the pillar 340 is shortened when the inner pillar is slid in the direction inserted into the outer pillar, and the overall length of the pillar 340 may be increased when the inner pillar is slid in the direction from the outer pillar. However, the pillar 340 need not be limited to the above-described configuration, and may be replaced with other conventional configurations as long as the length can be changed by an external force.

The upper frame 320 may be supported from the lower frame 310 by at least one pillar 340 and disposed in parallel with the lower frame 310. An object to be lifted, that is, the metering unit 200 may be seated on the upper surface of the upper frame 320. When the length of the pillar 340 increases, the upper frame 320 is lifted from the ground while the upper frame 320 is raised. The metering unit 200 seated on) is lifted.

Hydraulic jack 400 is a device for providing a lifting force to such a pillar (340). Hydraulic jack 400 is installed between the lower frame 310 and the upper frame 320, in order to lift the object seated on the upper frame 320, variable length of the column 340 by using an external force provided by the user. The upper frame 320 can be raised and lowered by doing so. In this regard, it will be described with reference to FIGS. 9 to 11 together.

9 is a perspective view showing a specific configuration of the hydraulic jack 400 shown in Figure 8, Figure 10 is a conceptual diagram for explaining the internal configuration and operating principle of the hydraulic jack 400 shown in Figs.

Specifically, the hydraulic jack 400 according to an embodiment of the present invention, the main body 410, the outer cylinder 420, the pressure lever 430 and the release valve 440.

The main body 410 is a cylindrical member and has a space in which a working fluid can be stored, and an inner cylinder 411 and a lifting piston 412 may be disposed therein.

The inner cylinder 411 is a cylindrical member formed inside the main body 410, and a working fluid may be stored between the main body 410 and the inner cylinder 411.

The lifting piston 412 is a member provided in the inner cylinder 411 to reciprocate along the longitudinal direction of the inner cylinder 411. That is, when the working fluid is supplied to the inner cylinder 411, the lifting piston 412 is raised by the pressure of the working fluid and the length of the column 340 is increased, thereby contacting the upper portion of the lifting piston 412. The upper frame 320 may rise from the ground.

The outer cylinder 420 is a member for supplying a fluid to the inner cylinder 411, and may be connected to the main body 410 through the fastening bracket 415 so that the outer cylinder 411 is maintained in a sealed state. The pressure piston 421 is formed in the pressure piston 421, and the pressure piston 421 may be raised or lowered by the pressure lever 430.

The pressure lever 430 is a member connected to the pressure piston 421 to transfer the external force provided from the user to the pressure piston 421.

FIG. 11 is a view illustrating an outer cylinder 420 constituting the hydraulic jack 400 and a connecting portion 422 for coupling the pressure piston 421 and the pressure lever 430 of the outer cylinder 420. The pressure piston 421 formed inside the 420 is physically coupled to the pressure lever 430 through the connecting portion 422, and because of this structural feature, the pressure piston 421 is provided by the user provided through the pressure lever 430. Can receive external force.

The pressure lever 430 has a through hole for coupling a member such as a pipe that can be gripped by the user, and thus the user moves the pipe up and down while the pipe is coupled to the pressure lever 430. Accordingly, an external force may be applied to the pressure lever 430. In another embodiment of the present invention, the pressure lever 430 may include the pipe described above or may be provided integrally with the pipe.

Looking at the specific operation principle of the hydraulic jack 400 according to an embodiment of the present invention, the user lifts the pressure lever 430 in a state in which the object to be raised by the hydraulic jack 400 is seated on the upper frame 320. When raised, the pressure piston 421 is raised to form a negative pressure in the outer cylinder 420. Accordingly, the working fluid stored between the main body 410 and the inner cylinder 411 may flow into the outer cylinder 420 along the suction pipe 451.

Then, when the user presses the pressure lever 430, the pressure piston 421 is lowered to apply pressure to the working fluid sucked into the outer cylinder 420. Thus, the working fluid sucked into the outer cylinder 420 may move to the inner cylinder 411 along the supply pipe 452. At this time, one end of the suction pipe 451 connected to the outer cylinder 420 side is provided with a non-return valve so that the working fluid can be pumped only along the supply pipe (452). The lifting piston 412 is raised by the pressure of the working fluid introduced into the inner cylinder 411. This process is repeated as the user raises and lowers the pressure lever 430, and as a result, as the pressure of the inner cylinder 411 gradually increases, the lifting piston 412 gradually rises to raise the lifting piston ( 412) The object on the top is lifted.

The release valve 440 is formed at one end of the supply pipe 452 and is a valve-shaped member for releasing the pressure of the inner cylinder 411 according to a user's operation. That is, when the user wants to lower the object to the original position, when the release valve 440 is opened, the high pressure charged working fluid introduced into the inner cylinder 411 receives gravity of the object through the recovery pipe 530. As the pressure of the lifting piston 412 is recovered to the main body 410, the pressure of the inner cylinder 411 is lowered, and the lifting piston 412 is lowered by the gravity of the object, so that the object may be lowered to its original position. .

As described above, the hydraulic jack 400 according to an embodiment of the present invention may lift or lower a heavy weight object by using a small force repeatedly applied to the pressure lever 430 from the user.

On the other hand, in another embodiment of the present invention, the user can adjust the amount of pressure provided to the lifting piston 412 according to the type of the object and the type of work to be performed. In this regard, it will be described with reference to FIGS. 12 to 15 together.

12 is a perspective view showing a movable lifting device equipped with a hydraulic jack according to another embodiment of the present invention.

Specifically, the movable lifting device 30 equipped with the hydraulic jack according to another embodiment of the present invention includes a lower frame 310, an upper frame 320, and a hydraulic jack 400a.

At this time, the lower frame 310 and the upper frame 320 constituting the movable lifting device 30 provided with a hydraulic jack according to another embodiment of the present invention shown in Figure 12 is an embodiment of the present invention shown in Figure 8 Since it is the same as the lower frame 310 and the upper frame 320 constituting the movable lifting device 420 with the hydraulic jack according to the example, repeated description will be omitted.

On the other hand, the hydraulic lifting device 30 is provided with a hydraulic jack according to another embodiment of the present invention constitutes a hydraulic lifting device 30 is provided with a hydraulic jack shown in Figure 8, the hydraulic jack according to an embodiment of the present invention ( 400 may be replaced with a hydraulic jack 400a according to another embodiment of the present invention. In this regard, it will be described with reference to FIGS. 13 to 15 together.

13 to 15 are perspective views showing the hydraulic jack 400a according to another embodiment of the present invention.

FIG. 13 is a perspective view of a hydraulic jack 400a according to another embodiment of the present invention, FIG. 14 is a view comparing an outer cylinder constituting the hydraulic jack 400a of FIG. 13, and FIG. 15 is a hydraulic jack (shown in FIG. 13). It is a conceptual diagram for explaining the internal structure and operation principle of 400a).

Specifically, the hydraulic jack 400a according to another embodiment of the present invention, the main body 410, the outer cylinder (420a, 420b, 420c, 620d, 620e, 620f), the pressure lever 430 and the release valve 440 Include.

At this time, the main body 410, the pressure lever 430 and the release valve 440 constituting the hydraulic jack 400a according to another embodiment of the present invention shown in Figure 10, one embodiment of the present invention shown in Figure 8 Since the main body 410 constituting the hydraulic jack 400 according to the example, the pressure lever 430 and the release valve 440 is the same, repeated description will be omitted.

On the other hand, the hydraulic jack 400a according to another embodiment of the present invention may be characterized in that a plurality of outer cylinder 420 shown in FIG. That is, in the hydraulic jack 400a according to another embodiment of the present invention, a plurality of outer cylinders 420a, 620b, 420c, 420d, 420e, 420f, and 420g may be connected to the pressure lever 430. Referring to FIG. 12, the hydraulic jack 400a according to another embodiment of the present invention includes six outer cylinders 420b and 420c around the first outer cylinder 420a formed along a central axis coaxial with the pressure lever 430. 420d, 420e, 420f, and 420g are expressed as being disposed along the circumference of the first outer cylinder 420a, but the present invention is not limited thereto, and the number of the outer cylinders is not limited.

Each of the outer cylinders 420a, 420b, 420c, 420d, 420e, 420f, and 420g is provided in a cylindrical shape, and a pressure piston is formed therein, respectively. That is, when a user applies an external force to the hydraulic jack 400a by operating the pressure lever 430, the pressure lever 430 applies the external force provided to each of the outer cylinders 420a, 420b, 420c, 420d, 420e, 420f, and 420g. Can be distributed by).

In this case, when the outer cylinders 420a, 420b, 420c, 420d, 420e, 420f, and 420g are all designed to have the same diameter, the outer cylinders 420a, 420b, 420c, 420d, 420e, 420f, and 420g are delivered to each other. The external force may be uniformly distributed. As another example, when the outer cylinders 420a, 420b, 420c, 420d, 420e, 420f, and 420g are designed to have different diameters, the external force may be transmitted in proportion to the size of the diameter.

In addition, the sum of the diameters of all the outer cylinders 420a, 420b, 420c, 420d, 420e, 420f, and 420g constituting the hydraulic jack 400a may be designed to be smaller than the diameter of the inner cylinder 411. Is preferably designed such that the sum of the diameters of the outer cylinders 420a, 420b, 420c, 420d, 420e, 420f, 420g is one third or less than the diameter of the inner cylinder 411. When the diameter of the outer cylinder is larger than the diameter of the inner cylinder 411, a force smaller than the magnitude of the external force applied to the outer cylinder can be transmitted to the inner cylinder 411.

A detailed operation principle of the hydraulic jack 400a according to another embodiment of the present invention will be described with reference to FIG. 15.

In FIG. 15, the hydraulic jack 400a according to another embodiment of the present invention is illustrated as having three outer cylinders 420a, 420b, and 420c, but as described above, FIG. 13 illustrates the hydraulic jack 400a of FIG. 11. As a conceptual diagram illustrating the operating principle, two outer cylinders or four or more outer cylinders may be the same as or similar to the following operating principles.

When the user lifts the pressure lever 430 while the hydraulic jack 400a is in contact with the object under the object to be raised, the pressure pistons 421a, 421b, and 421c of the respective outer cylinders 420a, 420b, and 420c. As the) rises, a negative pressure is formed in the outer cylinder 420. Accordingly, the working fluid stored between the main body 410 and the inner cylinder 411 may flow into the outer cylinders 420a, 420b, and 420c along the suction pipes 451a, 451b, and 451c.

Then, when the user presses the pressure lever 430, the pressure piston (421a, 421b, 421c) is lowered to apply pressure to the working fluid sucked into the outer cylinder (420a, 420b, 420c). Accordingly, the working fluid sucked into the outer cylinders 420a, 420b, and 420c may move to the inner cylinder 411 along the supply pipes 452a, 452b, and 452c. The lifting piston 412 is raised by the pressure of the working fluid introduced into the inner cylinder 411. This process is repeated as the user raises and lowers the pressure lever 430, and as a result, as the pressure of the inner cylinder 411 gradually increases, the lifting piston 412 gradually rises to raise the lifting piston ( 412) The object on the top is lifted.

At this time, the hydraulic jack 400a according to another embodiment of the present invention controls the opening and closing of the shutoff valves 4511a, 4511b, 4511c and the shutoff valves 4511a, 4511b, 4511c installed at one end of the suction pipes 451a, 451b, 451c. It may further include a control means (not shown).

The control means (not shown) may be provided in the form of a control circuit disposed inside the fastening bracket 415 and may be electrically connected to the shutoff valves 4511a, 4511b, and 4511c. In this case, the control means (not shown) may open and close the respective shutoff valves 4511a, 4511b, and 4511c according to the user's operation.

Equation 1 is a formula representing a force (W) applied to the lifting piston 412, the lifting force (W) applied to the lifting piston 412 is pressed against the diameter (D) of the lifting piston 412 It may be determined by the ratio of the sum d of the diameters of the pistons 421a, 421b and 421c and the external force w applied to the pressure pistons 421a, 421b and 421c.

That is, when the user transmits an external force w of a predetermined size through the pressure lever 430 to the hydraulic jack 400, the lifting force of the lifting piston 412 is the pressure piston (D) for the diameter D of the lifting piston 412. It may vary depending on the ratio of the diameter d of the 421a, 421b, and 421c. Here, the diameter D of the lifting piston 412 is determined according to the diameter of the inner cylinder 411, and the sum d of the diameters of the pressure pistons 421a, 421b, and 421c is the outer cylinders 420a, 420b, and 420c. As a result, the lifting force W acting on the lifting piston 412 depends on the ratio of the sum of the diameters of the outer cylinders 420a, 420b, and 420c to the diameter of the inner cylinder 411. Can be variable.

Accordingly, the hydraulic jack 400a according to another embodiment of the present invention selectively controls the opening and closing of the shutoff valves 4511a, 4511b, and 4511c by a control means (not shown) to the outer cylinders 420a, 420b, and 420c. The amount of working fluid flowing in can be adjusted, and the lifting force of the lifting piston 412 is increased by applying pressure to the working fluid only through the pressurizing pistons 421a, 421b, and 421c having the shutoff valves 4511a, 4511b, and 4511c open. It can be adjusted.

For example, when only the first shut-off valve 4511a is closed by a user's control means (not shown), the external force applied to the working fluid is operated when all the shut-off valve valves 4511a, 4511b, and 4511c are opened. Only two thirds of the external force w applied to the fluid can be transmitted. In other words, the diameters of the outer cylinders 420a, 420b, and 420c are varied according to the control of the control means (not shown) to have the effect of adjusting the lifting force W of the lifting piston 412. It is possible to adjust the lifting height of the hydraulic jack 400 according to the one-time operation of the pressure lever 430 according to the type of the object to be raised or the type of work to be performed after lifting the object.

In some other embodiments, control means (not shown) may automatically determine the shut-off valve valves 4511a, 4511b, 4511c to open and close.

As an example, the control means (not shown) opens only one shut-off valve valve 4511a, 4511b, 4511c from the initial operation time of the hydraulic jack 400a until the pressure lever 430 is operated a predetermined number of times. From the time when the pressure lever 430 is operated more than a predetermined number of times, the plurality of shutoff valve valves 4511a, 4511b, and 4511c may be controlled to be opened. As a more specific example, the control means (not shown) is such that only the first shut-off valve 4511a is opened until the pressure lever 430 is first operated five times, and until the pressure lever 430 is operated six to ten times. The first shutoff valve 4511a and the second shutoff valve 4511b may be opened, and the first shutoff valve 4511a and 4511b may be controlled to open all the shutoff valves 4511a, 4511b, and 4511c from at least 11 times. In general, when lifting an object using the hydraulic jack 400a, there are not many kinds of operations that cannot be performed at a low height. Therefore, when the object is initially raised at a high speed and then raised to an appropriate height, the height of the object is raised. It needs to be finely adjusted. In this case, according to the above-described feature of the present invention, in the state in which only one shutoff valve is opened, the object is raised at a high speed within a relatively fast time, and then gradually increases as the number of shutoff valves that are opened increases as time passes. Ascent rate may decrease. Therefore, even if the user always operates the hydraulic jack 400a with a constant magnitude of force, the user has the effect of varying the rising height of the object.

As another example, the control means (not shown) may automatically determine the shutoff valve valves 4511a, 4511b, and 4511c to be opened and closed according to the weight of an object disposed on the hydraulic jack 400a.

To this end, the hydraulic jack 400a according to some other embodiments may be further provided with a weight sensing means (not shown).

The weight sensing means (not shown) detects the weight of the object disposed above the hydraulic jack 400a and transmits the weight to the control means (not shown), and the control means (not shown) transmits the size of the detected weight to a predetermined critical section. It is possible to determine whether the shut-off valves 4511a, 4511b, and 4511c are opened or closed based on the result of the comparison.

For example, if it is determined that the control means (not shown) is included in the first critical section in which the weight of the object is relatively light, all of the shutoff valves 4511a, 4511b, and 4511c are opened to open the pressure lever 430 of the user. The lifting height of the hydraulic jack 400 according to the rotation operation can be controlled to be relatively low. On the other hand, if it is determined that the control means (not shown) is included in the second critical section where the object is relatively heavy, one operation of the pressure lever 430 of the user by opening the at least one shutoff valves 4511a, 4511b, and 4511c. The lifting height of the hydraulic jack 400 can be controlled to be relatively low. This is because when the weight of the object is relatively light, the object may leave the hydraulic jack 400a during the ascending process, and when the weight of the object is relatively heavy, the possibility of leaving the hydraulic jack 400a during the ascending process is relatively low as well. This is because a lot of climbing power is required.

As such, the hydraulic jack 400a according to another embodiment of the present invention may allow efficient work using the hydraulic jack 400a by varying the lifting force of the lifting piston 412 according to the type of the object or the type of the work. .

Figure 16 is a perspective view of a mobile lifting device equipped with a hydraulic jack according to another embodiment of the present invention.

Specifically, the movable lifting device 40 provided with the hydraulic jack according to another embodiment of the present invention includes a lower frame 310, an upper frame 320, a hydraulic jack 400, and a drop preventing unit 700.

At this time, the lower frame 310, the upper frame 320 and the hydraulic jack 400 constituting the movable lifting device 40 with a hydraulic jack according to another embodiment of the present invention shown in FIG. 16 is shown in FIG. Since the same as the lower frame 310 and the upper frame 320 constituting the movable lifting device 20 provided with a hydraulic jack according to an embodiment of the present invention, repeated description will be omitted.

The drop prevention unit 700 is installed at both sides of the hydraulic jack 400 to support the upper frame 320 when the upper frame 320 falls to prevent the hydraulic jack 400 from being damaged.

In one embodiment, the fall prevention unit 700 may include a vibration damping unit 500a and a load distribution unit 600.

Here, since the configuration of the vibration damping unit 500a is the same as that of the components of the vibration damping unit 500 as described with reference to FIGS. 5 and 6, the description thereof will be omitted.

The support bar 560 of FIG. 5 according to the present invention may be manufactured from a plastic sheet having excellent moldability and durability compared to a plastic sheet manufactured using PET resin alone.

The plastic sheet which concerns on this invention is manufactured by the following plastic sheet manufacturing method.

Referring to Figure 17, the plastic sheet manufacturing method for producing a plastic sheet of the present invention 100 parts by weight polyethylene terephthalate (polyethylene telephthalate, PET) resin, 2 to 4 parts by weight of polyurethane (polyurethane) dispersant, polyethylene dioxy 0.1 to 0.2 parts by weight of offen polystyrene sulfonate, polystyrolsulfonic acid, 3 to 5 parts by weight of N-methyl-2-pyrrolidone, tree 0.1 to 0.3 parts by weight of ethyl amine (isopropyl alcohol), 42 to 45 parts by weight of isopropyl alcohol and 50 to 52 parts by weight of water are mixed to prepare a first composition (S110); Preheating the mixed composition (S120); A third step (S130) of removing moisture of the preheated mixed composition; A fourth step S140 of heating the mixed composition from which moisture is removed; A fifth step (S150) of removing foreign substances of the heated mixed composition; A sixth step (S160) of manufacturing a plastic sheet by stretching while cooling the mixed composition from which foreign substances have been removed; And a seventh step of applying silicone to the plastic sheet and then drying it (S170).

According to the present invention, various additives may be mixed with a conventional PET resin, and a plastic sheet having excellent moldability and durability may be manufactured by preheating, dehumidifying, heating, and cooling.

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

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 the 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 functions 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, when the fruit and the like are stored.

In one embodiment, the above-described raw materials are based on 100 parts by weight of polyethylene telephthalate (PET) resin, 2 to 4 parts by weight of polyurethane dispersant, polyethylene dioxythiophene polystyrene sulfonate ) 0.1 to 0.2 parts by weight, polystyrolsulfonic acid 0.4 to 0.6 parts by weight, 3 to 5 parts by weight of N-methyl-2-pyrrolidone, triethyl amine (triethyl amine) 0.1 to 0.3 parts by weight, isopropyl alcohol (isopropyl alcohol) 42 to 45 parts by weight and water is preferably mixed 50 to 52 parts by weight. 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 (S110) may be further mixed with various additional ingredients to 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) -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.

In one embodiment, 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, added 2 to 3 parts by weight of water per 1 part by weight of garlic, heated at 80 to 100 ℃ for at least 5 hours, 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 based on 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.

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 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, a high residual amount of carbonic acid, and a 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 below 500 ° C., there is a disadvantage in that the desired granule size and crystallinity cannot be obtained. When sintering above 700 ° C., the residual amount of carbonic acid groups is low and 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.

In one embodiment, 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. 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.

In one embodiment, the hermit extract may be further mixed. The hermit extract not only acts as an antimicrobial agent, but also inhibits 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 folk medicine, and in Chinese medicine, it is called yangje (羊蹄). It is used as an adjuvant therapy for tumors and cancer. The hermit extract extracted from the hermit has antimicrobial and antioxidant effects on 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 divided 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 through 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 (S120) is a step of preheating the mixed composition, by applying heat to the mixed raw materials to ensure that the raw materials are stably mixed first.

The third step (S130) is a dehumidification step for 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 (S140) 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 (S150) is a step of removing foreign matters from the heated mixed composition, and may remove foreign matters inside the mixed composition by passing a screen having a mesh shape.

The sixth step (S160) is a step for producing a plastic sheet by stretching while cooling the mixed composition from which foreign substances have been removed, using two steps of stretching 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 S170, after the silicone is coated on the plastic sheet, the silicone sheet may be dried, and the silicon may be coated to finish the treatment and at the same time, an antistatic effect may be obtained. 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 antifog component in 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 materials, and in the case of 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 to be nonuniform). At this time, Examples 1-3 were extended in the width direction after extending | stretching longitudinally, 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 longitudinally, 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, stored spinach inside, after 1 day visually observed the inside It is shown in Table 5 below.

TABLE 5

As shown 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.

The support bar 560 made of the above-mentioned plastic sheet of the quality can be improved in durability and excellent moldability than when manufactured by using the PET resin alone.

Accordingly, when the support bar 560 is worn or damaged due to the continuous vibration, it is possible to easily rebuild and replace using the above-described plastic sheet to ensure continuous use of the device.

Referring to FIG. 18, the load dispersing unit 600 is installed below the support unit 630 supporting the lower side of the vibration damping unit 500a and has a hollow part 615 provided therein, Ground ball having a plurality of support small balls 620 placed in the hollow portion 615, and a fixing bolt 646 extending in an upward direction from the center of the ground plane 645 and the ground plane 645 on the top 640.

The load spreading unit 600 may disperse and partially absorb the load applied from the outside, and transmit a load q smaller than the load P applied from the outside.

The load distribution unit 600 distributes the load applied from the outside of the ball housing 610 inside the ball housing 610 and finally transmits a load smaller than the load applied from the outside of the ball housing 610. . The load applied from the outside of the ball housing 610 is distributed by the plurality of supporting small balls 620 and the ground ball 640 located in the hollow part 615, and part of the load is partially The inner wall is dispersed while pressing, and the remaining load may be transferred to the outside of the ball housing 610.

The ball housing 610 may be fixed to the surface by using concrete, etc., and a hollow portion 615 in which a plurality of supporting small balls 620 and ground balls 640 are accommodated may be provided therein. .

The ball housing 610 is a material having a certain strength of iron, concrete, wood, plastic, etc. to support the load distributed by the action between the plurality of supporting small balls 620 and the ground ball 640 disposed therein It may be made of.

The ball housing 610 may be formed in various shapes such as a polyhedron or a sphere, and the hollow part 615 may be formed in a spherical shape corresponding to the shape of the ground ball 640.

The plurality of supporting small balls 620 and the ground ball 640 may be accommodated in the hollow part 615 and may be formed in a spherical shape.

The plurality of supporting small balls 620 may be regularly arranged and received to contact each other along the outer circumferential surface of the hollow part 615. The ground ball 640 may be accommodated in the hollow part 615 in a state in which the ground ball 640 is placed on the plurality of supporting small balls 620, and may be supported in a point contact state by the plurality of supporting small balls 620.

As described above, the plurality of supporting small balls 620 and the ground ball 640 are regularly arranged so that their outer circumferences come into contact with each other. Dispersion of external load may occur while pressing the inner wall of the hollow part 615, ie, the ball housing 610, which is transmitted and finally located at the outermost side. At this time, in the present embodiment, the plurality of small balls for support 620 are regularly arranged, and the ground balls 640 are arranged on the plurality of small balls for support 620, thereby arranging the plurality of small balls for support. It is possible to increase the number of contact points between the 620 and the ground ball 640 and to normalize the load transfer to increase the load transfer effect between each other. In addition, the ground ball 640 is supported in a point contact state by the plurality of supporting small balls 620, it is possible to minimize the wear.

The plurality of supporting small balls 620 and the ground ball 640 may be made of a material having strength to withstand the load by the contact point between each other, for example, may be made of iron, concrete, wood, plastic, etc. have.

On the other hand, the ground ball 640 may be provided with a ground plane 645 on the top. A fixing bolt 646 may be installed at the center portion of the ground plane 645 to be inserted into the lower side of the support portion 630 to fix the support portion 630 to the ground ball 640.

At this time, the fixing bolt 646 may be formed in a flat pattern without forming a separate protrusion on the outside, but by forming a thread along the outer surface (that is, a shape such as a piece of nail), the lower side of the support portion 630 It would be desirable to tighten more strongly.

In this way, the load spreading part 600 is provided below the vibration damping part 500a to support the vibration damping part 500a, thereby supporting the upper frame 320 as described above by the vibration damping part 500a. Stability can be guaranteed.

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

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

1: metered object 2: packing container
3: feeder 10: automatic weighing device
20, 30, 40: movable lifting device with hydraulic jack
100: storage unit 110: hopper unit
111: body 112: legs
113: first shelf 114: second shelf
115: lifting part 120: stirring part
130: sensing line portion 140: discharge portion
141: horizontal discharge pipe 142: conveyor screw
143: vertical discharge pipe 150: discharge control
200: metering unit 310: lower frame
320: upper frame 400: hydraulic jack
500: vibration damping unit 600: load dispersion unit
700: fall prevention unit

Claims (2)

A storage unit for receiving and storing the weighed object to be weighed and discharging the weighed amount corresponding to the weight input from the user in a downward direction; And
It includes a metering unit which is installed on the lower side of the discharge port discharged from the storage unit to measure the weight of the measured object discharged in real time to notify the storage unit,
The storage unit may include: a hopper unit receiving an object to be weighed from an object to be metered device and storing the object to be measured in an internal space; At least one stirring pillar is installed in the vertical direction from the center of the inner space of the hopper to rotate, and extending from the stirring column to the inner surface of the hopper portion to rotate in accordance with the rotation of the stirring column to agitate the measured object Stirring section provided with stirring blades; A sensing sensor line installed in an internal space of the hopper to sense an amount of the measured object contained in the hopper; A discharge part installed at a lower side of the hopper part and discharging the measured object contained in the hopper part to a packaging container placed on the upper side of the metering part; And controlling the supply of the to-be-measured supply device so that the to-be-measured object stored in the hopper is kept constant by monitoring the amount of the to-be-measured object sensed through the sensing line in real time. When the packaging container is placed on the upper side of the weighing unit, the driving unit controls the discharge unit to discharge the measured object, and stops driving the discharge unit when the weight notified from the weighing unit reaches a preset weight. Including a discharge control unit,
The hopper unit, the body for receiving the measured object and storing in the internal space; Four legs spaced apart at regular intervals from each other and extending downward from the outside of the body to support the body; A first shelf having respective corners installed on each of the four legs; A second shelf spaced apart in an upward direction on an upper side of the first shelf and on which the weighing unit is placed; An elevating part installed between the first shelf and the second shelf to lift or lower the second shelf in an up and down direction; And a plurality of vibration damping parts installed between the first shelf and the second shelf so as to attenuate the vibration transmitted from the second shelf.
The vibration damping unit may include: a support part including a first plate, a second plate, a third plate, and a fourth plate formed of a plate having a “b” shape; A vibration absorbing part installed between each plate of the support part and another plate to absorb vibration; Between the top of the first plate and the top of the second plate, between the front end of the second plate and the front end of the third plate, between the bottom of the third plate and the bottom of the fourth plate, and the fourth plate Two connecting plates each provided between the front end of the first plate and the front end of the first plate to connect and install the first plate, the second plate, the third plate and the fourth plate; The upper and the front end of the first plate, the upper and front end of the second plate, the front and the lower end of the third plate, and the lower and front end of the fourth plate, two plates are formed in each of the upper or lower direction Extension plates; Four rotating parts connected to each other so that an upper part or a lower part of two extension plates extending from each plate face each other and are rotatable; And two support bars provided with an upper side or a lower side of the pivoting part and supported by the pivoting part and spaced apart from each other in the vertical direction to form a space therebetween.
The discharge portion, the horizontal discharge pipe extending in the horizontal direction from the lower side of the hopper; A conveyor screw installed in a longitudinal direction in the inner space of the horizontal discharge pipe and rotating to move an object to be supplied from the hopper in a front direction of the horizontal discharge pipe; And a vertical discharge pipe extending from the front end of the horizontal discharge pipe in a lower right angle to drop the measured object moved in the front direction of the horizontal discharge pipe in the direction of the packaging container.
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