KR102023956B1 - Door opening and closing system for storage warehouse - Google Patents

Abstract

The present invention relates to a warehouse entry system, including a height adjustable unit rotationally installed on a floor surface of a warehouse in a warehouse entry gate and rotating when the warehouse entry gate is completely opened so as to be possible to remove a stepped portion between the floor surface of the warehouse and a floor surface of a container box positioned on the entry of the warehouse.

Description

DOOR OPENING AND CLOSING SYSTEM FOR STORAGE WAREHOUSE}

The present invention relates to a warehouse entry system, and more particularly, to a warehouse entry system for removing a step between a container box disposed at the warehouse entrance and the warehouse floor.

Loading the goods stored in the warehouse into the container box, or unloading the goods stored in the container box to the warehouse is carried out in a state that moved the vehicle equipped with the container box near the doorway of the warehouse. At this time, a ramp structure for unloading goods is used to compensate for the step between the bottom of the warehouse and the bottom of the container box.

Object unloading ramp structures are used to move objects from high to low and have ramp sections. In addition, the unloading lamp structure has a structure in which several plates are connected by overlapping joints for transportation and storage efficiency. At this time, the joint section is made through welding, and therefore, the joint part has a step.

Therefore, when the object descends from the high place to the low place, the unloading movement may not be performed smoothly due to the continuous stepping of the slope section, and the impact of the step may cause noise and may damage the item. . In addition, many joints must be joined by welding, which increases manufacturing man-hours, takes a long time, and is not easy to maintain.

In addition, every time the work loaded in the container box is unloaded into the warehouse, the work load may be lengthened because the lamp unloading structure must be moved to the warehouse entrance and installed.

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

One side of the present invention is a warehouse access system including a height adjustment unit hinged to the warehouse floor in the interior of the warehouse entrance gate to compensate for the step between the bottom of the warehouse and the bottom of the container box located in the open warehouse entrance. To provide.

Another aspect of the present invention provides a warehouse access system including a bending plate for selectively connecting the container box located at the warehouse entrance to the other end of the height adjustment.

Another aspect of the present invention provides a warehouse access system including a mirror member that is installed to check the forward movement of a container box-mounted vehicle disposed at the warehouse entrance.

Another aspect of the present invention provides a warehouse access system including an elastic support that is installed on the bottom of the height adjustment unit to absorb vibrations that may occur due to the rotation of the height adjustment unit.

Another aspect of the invention provides a warehouse entry system comprising an adhesive composition for contact between components.

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.

Warehouse access system according to an embodiment of the present invention is rotatably installed on the bottom surface of the warehouse from the inside of the warehouse entrance gate, the step between the bottom surface of the warehouse and the bottom surface of the container box located at the entrance of the warehouse When the warehouse entrance gate is completely open to remove the, includes a height adjustment to rotate.

On the other hand, the height adjustment unit, when the warehouse entrance gate is closed is located in a state of being fitted into the groove of the shape having three corners formed on the bottom surface of the warehouse to be flat with the bottom surface of the warehouse When the warehouse entrance gate is opened, the other end is lifted by rotating about one end of the three corners formed on the bottom surface of the warehouse and hinged to the corner facing the doorway direction of the warehouse, and the height adjusting part The rotating motor further includes a rotating motor, wherein the rotating motor is operated so that the other end of the height adjusting part is lifted within a predetermined rotational angle of 0 degrees to 90 degrees, the angle being between 0 degrees and 10 degrees. When the height adjuster is rotated, the first adjuster operates at a first speed and rotates the height adjuster at an angle between 10 degrees and 30 degrees. In this case, when operating at a second speed slower than the first speed, and when rotating at an angle between 30 degrees to 90 degrees, operating at a third speed slower than the second speed, the height adjustment unit, hinged to the other end The bending plate further includes a bending plate, one end of which is hinged to the other end of the height adjustment part, the other end is in contact with the ground in the state in which the warehouse entrance gate is closed, the warehouse entrance gate is opened When the height adjustment unit is lifted, the other end is rotated around the hinged one end to be in contact with the container box, the other end is formed of a shock absorbing member of the rubber member or rolling means, the other end of the distance sensor Is formed, when the rotation of the height adjustment unit is completed and the container box located at the doorway of the warehouse And limit the rotational angle of the bending plate so as to contact the container box according to the detected distance, and the warehouse entry system includes: a rail for sliding the warehouse entry gate so that the warehouse entry gate is completely And a mirror member installed at a maximum position to rise by sliding movement so as to be opened, wherein the mirror member has a hollow rectangular parallelepiped shape, and one side of the mirror member is closed with an inner surface of the warehouse entry gate in a state where the warehouse entry gate is closed. It includes a rotating part installed on the outer side of the rail and the rotating part rotatably installed on the opposite side and parallel to the opposite side, and includes a mirror attached to the front, the mirror part inside the warehouse in the state that the warehouse entrance gate is closed If the entrance gate is fully open, the mirror portion At least a portion of the can be provided to be rotatable so that it can shine outside the doorway of the warehouse.

According to one aspect of the present invention described above, it is possible to conveniently load goods into or unload goods from the container box, and to increase the safety and efficiency of the goods transport.

In addition, according to another aspect of the present invention, it is possible to smooth the movement path between the container box and the warehouse by the bending plate to prevent the damage of things that may occur during the movement.

In addition, according to another aspect of the present invention can check the situation of the warehouse entrance and the safety accident can be prevented.

In addition, according to another aspect of the present invention it is possible to ensure the support stability of the height adjustment portion by the elastic support.

In addition, according to another aspect of the present invention it is possible to ensure the support stability by the adhesive composition is hygienic and excellent adhesion.

1 and 2 is a view showing a warehouse access system according to an embodiment of the present invention.
3 is a view showing in detail the operation of the bending plate shown in FIGS.
4 is a view showing a part of the warehouse access system according to another embodiment of the present invention.
5 is an example of a mirror member included in a warehouse access system according to another embodiment of the present invention.
6 is a view showing an elastic support included in the warehouse access system according to another embodiment of the present invention.
7 and 8 are views showing the support pillar of FIG.
FIG. 9 is a diagram illustrating a cross elastic part of FIG. 7.
FIG. 10 is a view illustrating the vertical elastic part of FIG. 8.

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 and 2 is a view showing a warehouse access system according to an embodiment of the present invention.

Referring to FIG. 1, a warehouse access system 10 according to an exemplary embodiment of the present invention includes a height adjusting unit 11 installed at a bottom surface of the warehouse access gate 1.

Referring to Figure 2, warehouse access system 10 according to an embodiment of the present invention, when the warehouse access gate 1 is opened through a sliding movement, once the height adjuster 11 is hinged to the bottom surface It can be rotated around to compensate for the step between the bottom of the warehouse and the bottom of the container box located at the open warehouse entrance.

The warehouse access system 10 according to an embodiment of the present invention connects the bottom surface of the warehouse and the bottom of the container box to facilitate loading of goods into the container box or unloading of goods from the container box, and The safety and efficiency of transportation can be improved.

Hereinafter, each configuration of the warehouse access system 10 according to an exemplary embodiment of the present invention shown in FIGS. 1 and 2 will be described in detail.

The height adjusting part 11 may be installed to be rotatable on the bottom surface of the warehouse entrance gate 1 side.

The height adjusting part 11 is fitted to the bottom surface of the warehouse when the warehouse access gate 1 is closed, and the center of the one end hinged to the bottom at the same time the warehouse access gate 1 is opened. The other end can be lifted by rotating.

Here, the warehouse access gate 1 may be a conventional sliding lift door, and a groove for fitting the height adjustment part 11 may be formed on the bottom surface of the warehouse. That is, a groove having a shape having three corners may be formed on the bottom surface of the warehouse, and an edge thereof facing the doorway may be hinged with the height adjuster 11.

One end of the height adjustment unit 11 may be hinged to the bottom surface of the warehouse. For example, the hinge coupling may be made of a hinge, but is not limited thereto, and may be coupled through various coupling elements having a rotating element that enables the rotation of the height adjusting unit 11.

Although not shown in Figures 1 and 2, the height adjusting unit 11 is provided with a rotating motor therein, it can be rotated through the operation of the rotating motor.

The other end of the height adjusting unit 11 may have a flat shape with the bottom of the warehouse in a state in which the warehouse access gate 1 is closed, and may be lifted at the same time as the warehouse access gate 1 is opened. In this case, the height adjusting unit 11 may be lifted within a predetermined rotation angle. The rotation angle may be limited to between 0 degrees and 90 degrees, preferably between 0 degrees and 60 degrees. The other end of the height adjusting unit 11 may be lifted at a predetermined angle and then lowered to the original seat when the warehouse access gate 1 is closed.

The rotation of the height adjustment unit 11 may be automatically controlled in conjunction with the opening and closing operation of the warehouse access gate 1 as described above, or may be controlled by a user's direct manipulation.

Here, the driving speed of the rotation motor which enables the rotation of the height adjusting unit 11 may be adjusted according to the rotation angle of the height adjusting unit 11. For example, when the height adjusting unit 11 rotates at an angle between 0 degrees and 10 degrees, the rotation motor may operate at the first speed. When the height adjuster 11 rotates at an angle between 10 degrees and 30 degrees, the rotating motor may operate at a second speed that is slower than the first speed, and the height adjuster 11 may operate between 30 degrees and 90 degrees. When rotating at an angle of, the rotating motor may operate at a third speed slower than the second speed. This is to precisely control the step adjustment between the warehouse floor surface and the container box bottom surface by the height adjustment unit (11).

The other end of the height adjustment unit 11 may include a bending plate for selectively connecting the container box located at the warehouse entrance. This will be described in detail with reference to FIG. 3.

3 is a view showing in detail the operation of the bending plate shown in FIGS.

Referring to FIG. 3, the other end of the height adjusting unit 11 may be hinged to the bending plate 13. For example, the hinge coupling may be made of a hinge, but is not limited thereto, and may be coupled through various coupling elements having a rotating element that enables the rotation of the bending plate 13.

Although not shown in FIG. 3, the bending plate 13 may include a rotating motor therein, and may rotate through the operation of the rotating motor.

When the bending plate 13 has completed the rotation of the height adjuster 11, the other end may be brought into contact with the container box by rotating about the one end hinged to the height adjuster 11.

For example, the bending plate 13 may be positioned in a state where the other end touches the ground in a state where the warehouse access gate 1 is closed. That is, the bending plate 13 may be provided in the state coupled to the other end of the height adjusting portion 11 at an angle of 90 degrees. When the warehouse access gate 1 is opened and the height adjusting part 11 is lifted up, the bending plate 13 may be aligned with the height adjusting part 11 while being rotated and expanded. The bending plate 13 may form an angle of 90 degrees with the height adjusting part 11 while being rotated and folded when the warehouse access gate 1 is closed again and the height adjusting part 11 comes down to its original position.

One end of the bending plate 13 may be hinged to the other end of the height adjusting unit 11 as described above, and the other end of the bending plate 13 may be formed of an impact absorbing member. Since the other end of the bending plate 13 is in contact with the ground or the container box, a shock absorbing member may be formed to prevent damage at this time. For example, the shock absorbing member may be formed of a rubber member or a rolling means, but is not limited thereto. The shock absorbing member may be made of a material capable of reducing the friction force applied to the bending plate 13.

Meanwhile, the other end of the bending plate 13 may have a distance sensor. The other end of the bending plate 13 is in contact with the container box as described above, and detects the distance to the container box through a distance sensor, and can control the rotation angle to contact the container box according to the detected distance. .

For example, the bending plate 13 may detect the distance to the container box when the rotation of the height adjusting unit 11 is completed, and calculate an angle for reaching the container box by using the detected distance. As the rotation angle is expanded by the calculated angle, the container box and the height adjuster 11 may be selectively connected.

4 is a view showing a part of the warehouse access system according to another embodiment of the present invention.

Referring to Figure 4, warehouse access system 50 according to another embodiment of the present invention is height adjustment provided on the warehouse floor, such as warehouse access system 10 according to an embodiment of the present invention shown in FIG. It may further include a mirror member installed on the rail for sliding the warehouse entrance gate 1, in addition to the unit (11).

For example, the warehouse access system 50 according to another embodiment of the present invention may include a mirror member installed to check the forward movement of the container box-mounted vehicle disposed at the warehouse entrance at approximately A in FIG. 4. have. Here, the A position may be a position where the warehouse entrance gate 1 is raised when the warehouse entrance is completely opened. That is, the warehouse entrance gate 1 may ascend to the maximum A position.

5 is an example of a mirror member included in a warehouse access system according to another embodiment of the present invention.

Referring to FIG. 5, the mirror member 30 may be installed at the A position in FIG. 4.

The mirror member 30 may include a rotating part 31 and a mirror part 35.

The mirror part 35 may be installed on an outer surface of the rail for slidingly moving the warehouse entrance and exit gate 1 by the pivoting part 31. Mirror portion 35 is a mirror 38 is attached to the front surface, mushroom-shaped rotating projections 36 protruding upward in the upper surface may be formed, the rotating projections 36 are rotated to the rotating portion 31 It may be inserted into the through hole 33 is formed. At this time, the upper end of the rotating projection 36 may be formed slightly larger than the diameter of the through hole 33 of the rotating part 31, the upper end of the cross-shaped gap 37 formed in the vertical direction to be inserted into the through hole 33. ) Is formed and the material is made of an elastic body, and is easily inserted into the through-hole 33 when inserted, and is restored again by the elastic force when everything is entered. And, the lower end of the rotating projection 36 is formed to be slightly smaller or almost the same as the diameter of the through hole 33, when the upper end of the rotating projection 36 is seated and coupled to the through hole 33, the lower end of the through hole 33 Slightly dropped or almost in contact with the inner peripheral surface of the) it is possible to rotate the mirror portion (35).

The rotating part 31 has an empty rectangular parallelepiped shape, and may be installed on an outer side surface of the rail such that one side thereof is parallel to the inner side surface of the warehouse access gate 1 in a state where the warehouse access gate 1 is closed. .

Therefore, when the warehouse entrance gate 1 is closed, the mirror unit 35 is disposed to reflect the inside of the warehouse, and when the warehouse entrance gate 1 is completely opened, the mirror unit 35 can be rotated. At least a portion of the mirror 35 is reflected outside the warehouse entrance.

According to another warehouse access system according to another embodiment of the present invention, by using the mirror member 30 to check the forward movement of the container box loading truck located at the warehouse entrance, the goods are unloaded from the container box or the object to the container box. Safety accidents can be prevented during loading.

The warehouse access system according to another embodiment of the present invention is different in that it further includes an elastic support as compared to the warehouse access system according to another embodiment of the present invention shown in FIG. Do. Therefore, in the following description, only the elastic support is described, and the description of the rest of the configuration is replaced with the above description.

The elastic support part is installed on the bottom of the height adjusting part 11 to absorb vibrations that may occur due to the rotation of the height adjusting part 11, and by supporting the height adjusting part 11 by using elastic force. Impact transmitted from the height adjuster 11 to the goods loaded on the warehouse floor or the height adjuster 11 can be minimized, and thus the height adjuster 11 or the height adjuster 11 It can prevent the damage of things.

6 is a view showing an elastic support included in the warehouse access system according to another embodiment of the present invention.

Referring to FIG. 6, the elastic support part 500 includes a support frame 540, four support plates 510, four pairs of support frames 520, and a support column 530.

The supporting frame 540 is supported by the supporting plate 510 installed at the lower side, and supports the height adjusting unit 11 by using elastic force when the height adjusting unit 11 vibrates.

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

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

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

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

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

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

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

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

In addition, the elastic support 500 having the configuration as described above, can also be formed in a vertical symmetrical structure, in the case of Figure 5 is shown that each configuration is formed only on the upper portion of the support pillar 530 The configuration associated with four support plates 510 and four pairs of support frames 520 as one would be equally applicable to the bottom of the support pillars 530.

7 and 8 are views showing the support pillar of FIG.

Referring to FIG. 7, the support pillar 530 includes a pillar body 531, a cross groove 532, a cross elastic portion 533, four vertical grooves 534 (see FIG. 6), and four vertical elastic portions. 535 (see FIG. 10).

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

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

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

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

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

FIG. 9 is a diagram illustrating a cross elastic part of FIG. 7.

Referring to FIG. 9, the cross elastic part 533 includes a cross case part 5313, an upper support part 5332, four upper elastic parts 5333, four upper elastic support parts 5340, and four upper connecting links. A part 5335 is included.

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

At this time, the length of each branch of the cross case portion 5311 is formed shorter than the length of each branch of the cross groove 532, as shown in Figure 14, the upper portion in the space formed on the outside of the cross case portion (5331) The connecting link portion 5335 may be disposed and may form a space for sliding movement.

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

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

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

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

FIG. 10 is a view illustrating the vertical elastic part of FIG. 8.

Referring to FIG. 10, the vertical elastic portion 535 includes a vertical case portion 5331, a side support portion 5332, a side elastic portion 5431, a side elastic support portion 5344, and a side connection link portion 5345. do.

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

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

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

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

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

The warehouse access system according to another embodiment of the present invention may further include an adhesive composition for adhesion between the rail and the mirror member 30.

In the present embodiment, the adhesive composition, 40 to 80 parts by weight of thermoplastic resin, 5 to 40 parts by weight of tackifier resin, 1 to 5 parts by weight of rosin, 1 to 10 parts by weight of plasticizer, 1 to 10 parts by weight of filler and antioxidant 0.1 It includes 1 part by weight. Hereinafter, each component will be described in detail.

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

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

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

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

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

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

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

On the other hand, in the present embodiment, the adhesive composition is preferably used by mixing the biodegradable hypoallergenic resin together with the various petroleum resins described above.

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

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

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

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

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

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

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

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

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

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

The present invention preferably uses a mixture of stone powder and pulp powder as a filler in order to reduce odor and bacterial development while controlling the reinforcement and flowability of the adhesive composition. Stone powder can achieve high strength without using additives due to the compactness of the particles, and the cracking of the adhesive hardly occurs even when the temperature change is large due to low volumetric strain according to the surrounding environment.

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

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

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

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

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

On the other hand, in the present embodiment, when the adhesive composition is applied, it is subjected to a press operation, in which case there is a possibility that a poor adhesion due to the amount is removed.

Thus, in the present embodiment, the adhesive composition may further include a nano silica value which can improve the adhesion by allowing the adhesive composition to be uniformly distributed on the surface. At this time, the content of the nano silica is preferably 0.1 to 5 parts by weight, and the size of the nano silica (primary particles) is preferably 100 nm or less.

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

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

Example 1

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

 Example 2

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

Example 3

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

 [Comparative Example]

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

Experimental Example

(1) Mesh adhesive strength

In order to evaluate the mesh adhesive strength of the hot melt adhesive, the adhesive pellets quantitated between two pieces of overcoat fabrics were melt-coated at 170 ° C., and then pressed at a pressure of 60 kgf / cm 2 for 30 seconds at 130 ° C. Adhesive strength (kgf / cm 2) was measured.

 (2) Melt Flow Index

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

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

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

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

1: warehouse entry gate
10: warehouse access system
11: height adjustment
13: bending plate

Claims (2)

The warehouse entrance gate is completely opened inside the warehouse entrance gate so as to be rotatable to remove the step between the bottom of the warehouse and the bottom of the container box located at the entrance of the warehouse. If included, include a height adjustment unit,
The height adjustment unit,
When the warehouse access gate is closed, the warehouse access gate is positioned in a state of being fitted into a groove having three corners formed on the bottom surface of the warehouse to form a flat state with the bottom surface of the warehouse, and the warehouse access gate is When opened, the other end of the three corners formed on the bottom surface of the warehouse is rotated about the one end hinged to the corner facing the doorway direction of the warehouse, the other end is lifted, and the rotating motor for rotating the height adjustment unit Including more,
The rotary motor,
The other end of the height adjusting portion is lifted within a predetermined rotation angle of 0 degrees to 90 degrees, but when the height adjusting portion is rotated at an angle between 0 degrees and 10 degrees, operates at a first speed, 10 degrees A third speed slower than the first speed when the height adjustment unit rotates at an angle between about 30 degrees and a third speed slower than the second speed when rotating at an angle between 30 degrees and 90 degrees Works with
The height adjustment unit,
Further comprising a bending plate hinged to the other end,
The bending plate,
One end is hinged with the other end of the height adjustment unit, the other end is located in a state in which the other end is in contact with the ground in the state in which the warehouse entrance gate is closed, the hinge end once the warehouse entrance gate is opened to lift the height adjustment unit When the other end is rotated to be in contact with the container box, the other end is formed with a shock absorbing member of any one of the rubber member or rolling means, the other end of the distance sensor is formed, the rotation of the height adjustment unit is completed Detects the distance to the container box located at the doorway of the warehouse, and limits the rotation angle of the bending plate to contact the container box according to the detected distance,
The warehouse access system,
In the rail for slidingly moving the warehouse entrance gate, further comprising a mirror member installed at the maximum position to rise in the sliding movement so that the warehouse entrance gate is fully opened,
The mirror member,
In the state in which the warehouse entrance gate is closed in the shape of a hollow cuboid, the pivoting part and the pivoting part which are installed on the outer surface of the rail so that one side is parallel to the inner surface of the warehouse access gate are rotatably installed. And a mirror unit having a mirror attached to the front surface thereof, wherein the mirror unit reflects the inside of the warehouse when the warehouse access gate is closed, and when the access gate is completely opened, at least a part of the mirror unit is outside the entrance of the warehouse. It can be rotated so that it can be seen,
It is installed on the bottom of the height adjustment portion, further comprising an elastic support for absorbing vibration that may occur due to the rotation operation of the height adjustment portion,
The elastic support unit, the support frame for supporting the height adjustment unit using an elastic force when the height adjustment unit vibrates; Four support plates for supporting the support frame seated on the upper side; Four pairs of support frames including a first frame and a second frame rotatably connected to a lower portion of each of the four support plates; And a quadrangular pillar shape, wherein the first frame is connected to the upper side to be pivotally and horizontally slidable, and the second frame is connected to one side to be pivotally and vertically slidable. Including pillars,
The support pillar, the pillar body is formed in the shape of a square pillar; Cruciform grooves are formed recessed in the upper portion of the pillar body in a "+"shape; A cross-elastic portion formed in a shape corresponding to the shape of the cross groove and inserted into the cross groove and connected to the upper end of the four branches so that the lower side of the first frame is rotatable; Four vertical grooves formed on each side of the pillar body in a vertical direction; And four vertical elastic parts formed in a shape corresponding to the shape of the vertical grooves and inserted into the vertical grooves, respectively, and connected to the upper outer side so that the lower side of the second frame is rotatable.
The cross elastic part may include a cross case part having an inner space having a “+” shape; An upper support part formed of a cube and disposed at a center portion of the cross case part; Four upper elastic parts disposed on each side of the upper support part; Four upper elastic support parts disposed at ends of respective branches of the inner space of the cross case part and supported by elastic force of the upper elastic part; And a support bar disposed at each end of each branch of the cross groove, the support bar being installed between one side facing the cross case part and the upper elastic support part, and maintained at a predetermined interval on the upper side of the first frame. It is connected to the lower side is rotatably installed, and includes four upper connecting links for sliding along the groove of the cross groove in the direction of the center of each branch of the cross groove,
The vertical elastic part may include a vertical case part formed in a shape corresponding to the shape of the vertical groove having an inner space; A side support part formed of a cube and disposed in a lower space of the vertical case part; A side elastic part disposed above the side support part; A side elastic support part disposed above the inner space of the vertical case part and supported by an elastic force of the side elastic part; And a support bar disposed at an upper end of the vertical groove, the support bar being disposed between the lower surface facing the vertical case portion and the upper surface of the side elastic support portion, and the predetermined distance being maintained at a predetermined interval. The lower side of the rotatable connection is installed, comprising a side connection link for sliding along the groove of the vertical groove in the downward direction of the vertical groove, warehouse access system. delete

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