KR101955714B1 - Device for bending insect screen used in window frame - Google Patents

Abstract

According to an embodiment of the present invention, an apparatus for bending a window screen for a window frame comprises: a guide frame formed at the edge of a table for a window frame to be fixed in a predetermined position; a guide rail formed in the direction parallel with the longitudinal direction of the guide frame and disposed in the position spaced from the guide frame by a predetermined interval; and a bending unit mounted on the guide rail to reciprocally move along the guide rail in the longitudinal direction for the window screen disposed in the upper portion of the window frame disposed in the guide frame to be bent gradually, and bending the window screen during the movement to enable the window screen to be wound on the window frame.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a window-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to an insect screen folding apparatus for a window frame. More particularly, the present invention relates to an insect screen folding apparatus for a window frame that bends an edge portion of an insect screen net to form an insect screening net.

Insect screens are installed on doors or windows to prevent infestation of various insect pests such as mosquitoes and flies. The insect screens can be installed at the windows and doors of most residential areas since they can provide indoor ventilation function and insect intrusion prevention function at the same time.

The insect screen is made of aluminum and stainless steel netting. It is made with the window in advance and is installed on the outside of the window frame.

However, in the conventional insect screen installation process, it takes a lot of time to install the insect screen network because the operator has to repeat the process of manually bending the edge portion of the insect screen several times in order to connect the insect screen to the window frame , There is a limitation that the result is different according to the skill level of the operator.

Korean Patent No. 10-1528721

According to one aspect of the present invention, there is provided an insect screen web bending apparatus for a window frame, wherein an edge portion of an insecting net is bent so that an insect net is formed on a window frame, and the wind screen is wound along an outer face of the window frame.

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

A screen frame bending apparatus for a window frame according to an embodiment of the present invention includes a guide frame formed at an edge of a table to fix a window frame at a predetermined position, a guide frame formed in a direction parallel to a longitudinal direction of the guide frame, A guide rail disposed at a position spaced apart from the guide rail by a predetermined distance and an insect net disposed on an upper portion of the window frame arranged in the guide frame, the guide rail being mounted on the guide rail and reciprocating in the longitudinal direction along the guide rail And a bending unit for bending the insect-control net in the course of movement and winding the insect screen web onto the window frame.

In one embodiment, the guide frame is formed with grooves along the longitudinal direction, and a plurality of engaging jaws are formed along the grooves so that the outer frame of the window frame is fixedly disposed on the grooved portion, A sliding portion formed with a coupling groove at a lower portion and coupled to the guide rail by way of the coupling groove, a handle portion for holding and manipulating the folding unit by the user, and a guide portion extending from the sliding portion, A first roller portion, a second roller portion, and a third roller portion are sequentially formed along the length direction of the bending unit, and the roller portion is formed by sequentially forming a first roller portion, a second roller portion, and a third roller portion along the longitudinal direction of the bending unit , The first roller portion includes a first vertical rod and a second vertical portion formed in a direction perpendicular to the paper surface from one end of the sliding portion A first height adjustment member coupled to the first vertical bar and the second vertical bar and a second height adjustment member extending from the first height adjustment member in a direction parallel to the ground, And a second roller that is axially coupled to the second drive shaft, wherein the second roller portion includes a first roller and a second roller that are spaced apart from the sliding portion in a horizontal direction A first horizontal bar, a second horizontal bar and a third horizontal bar formed in one direction, a length adjusting member coupled to the first horizontal bar, the second horizontal bar and the third horizontal bar, A fourth drive shaft and a fifth drive shaft extended from the third drive shaft, a third roller axially coupled to the third drive shaft, a fourth roller axially coupled to the fourth drive shaft, And the third roller portion includes a third vertical bar formed in a direction perpendicular to the paper surface from the other end of the sliding portion, a second height adjusting member coupled to the third vertical bar, A sixth driving shaft and a seventh driving shaft extending from the sliding portion in the direction of the guide frame and extending from the second height adjusting member and the third height adjusting member in a horizontal direction with respect to the ground, A sixth roller axially coupled to the sixth drive shaft, and a seventh roller axially coupled to the seventh drive shaft.

According to one aspect of the present invention, the operator can automatically perform the process of repeatedly bending the insect screening net with only one moving operation, and by bending the insecting net in stages using a plurality of rollers during the bending process It is possible to minimize breakage of the insect screen.

1 and 2 are views showing a schematic configuration of an insect screen web bending apparatus for a window frame according to an embodiment of the present invention.
3 is a view showing a specific structure of the guide frame shown in Figs. 1 and 2. Fig.
Fig. 4 is a view showing a specific structure of the bending unit shown in Figs. 1 and 2. Fig.
5 and 6 are views showing an example of a screening bending process using the screening device bending apparatus for a window frame according to the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

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

1 and 2 are views showing an insect screen folding apparatus for a window frame according to an embodiment of the present invention.

The screening device bending apparatus 1 for a window frame according to the present invention is a device for bending an edge portion of an insecting net so as to form an insecting net on a window frame and winding it along the outer face of the window frame.

In this process, the window screen bending apparatus 1 for a window frame according to the present invention can effectively bend the end portion of the screen by folding the window screen arranged in the upper part of the window frame step by step, with the window frame fixed at a predetermined position , So that the insect screens can always be wound on the window frame in a constant form.

Specifically, the window screen bending apparatus 1 for a window frame according to an embodiment of the present invention includes a guide frame 100, a guide rail 200, and a bending unit 300.

The guide frame 100 is a member formed at an edge portion of the table 10, and can fix the window frame at a predetermined position. To this end, a plurality of hooks 110 may protrude from the upper surface of the guide frame 100 along the longitudinal direction. In this regard, FIG. 3 will be described together.

3 is a view showing a specific structure of the guide frame 100 shown in Figs. 1 and 2. Fig.

As shown in the figure, the guide frame 100 is formed with grooves along the longitudinal direction, and a plurality of locking protrusions 110 may be formed along the longitudinal direction. When the inner edge portion of the window frame is disposed at this portion of the guide frame 100, the window frame is fixed by the engaging jaw 110 Accordingly, it is possible to prevent the window frame from being detached by the external force during the screen bending process described later. That is, the window frame can be fixedly disposed at a specific position of the table 10, specifically, at the edge portion of the table 10 by the latching jaws 110.

The guide rail 200 is a member arranged in parallel with the guide frame 100. Specifically, the guide rail 200 may be formed at a height lower than the height of the guide frame 100, and may be parallel to the longitudinal direction of the guide frame 100 at a position spaced apart from the guide frame 100 by a predetermined distance And can be arranged to have a longitudinal direction. In the illustrated embodiment, the pair of guide rails 200 are shown as a pair, but the present invention is not limited thereto, and the number of the guide rails 200 may be changed depending on the manufacturing environment, the purpose of use, and the like.

The bending unit 300 is a member mounted on the guide rail 200 and sliding along the longitudinal direction of the guide rail 200. The bending unit 300 may reciprocate in the longitudinal direction along the guide rail 200 to contact the window frame and the insect screening network disposed in the guide frame 100 and wind the insect screening network onto the outer frame of the window frame. In this regard, FIG. 3 will be described together.

4 is a view showing a specific configuration of the bending unit 300 shown in Figs. 1 and 2. Fig.

As shown, the bending unit 300 may include a sliding portion 310, a handle portion 320, and a roller portion 330.

The sliding portion 310 is a member that is coupled to the guide rail 200 by a rail. The sliding portion 310 may have a coupling groove formed along the longitudinal direction at a lower portion thereof. That is, the sliding portion 310 is provided in a U-shape, and the guide rail 200 can be received in the lower end portion.

The grip portion 320 may be formed by extending from one side of the sliding portion 310 as a portion where the user grasps the bending unit 300. That is, the user can move the bending unit 300 forward or backward while grasping the handle 320, and the bending unit 300 can slide in the longitudinal direction along the guide rail 200 by the external force of the user .

The roller unit 330 extends from the sliding part 310 and contacts the insecting net during the movement of the sliding part 310 to bend the insecting net step by step.

The roller unit 330 may include a first roller unit 331, a second roller unit 332, and a third roller unit 333. At this time, the first roller 331, the second roller 332, and the third roller 333 may be sequentially disposed along the length direction of the roller 330.

The first roller portion 331 may extend from one end of the sliding portion 310. Specifically, the first roller portion 331 includes a first vertical bar 331a and a second vertical bar 331b formed in a direction perpendicular to the paper surface from one end of the sliding portion 310, and a first vertical bar 331a A first height adjusting member 331c coupled to the second vertical bar 331b and a second height adjusting member 331b extending from the first height adjusting member 331c in a horizontal direction with respect to the ground, The first driving shaft 331d and the second driving shaft 331e formed in the first driving shaft 331d and the second driving shaft 331e formed in the second driving shaft 331e, (331g).

At this time, the height of the first roller 331f and the second roller 331g can be adjusted by the first height adjusting member 331c so that the side surface of the first roller 331f and the second roller 331g can be brought into contact with the insect screen formed on the window frame or the window frame. The first roller 331f and the second roller 331g are rotatably coupled to the first drive shaft 331d and the second drive shaft 331e, respectively. Accordingly, the first roller 331f and the second roller 331g can contact the insecting net as the sliding portion 310 moves, so that the insect net can be brought into close contact with the window frame.

In this process, the insect control net projected from the window frame in the horizontal direction with respect to the ground can be bent downward by the rotation of the first roller 331f and the second roller 331g, and bent in a L-shape.

The second roller portion 332 is a member provided at the rear end of the first roller portion 331. Specifically, the second roller 332 is formed in a horizontal direction with respect to the paper surface from the sliding part 310. The second roller 332 includes a first horizontal bar 332a, a second horizontal bar 332b, A length adjusting member 332d coupled to the second horizontal bar 332b and the third horizontal bar 332c and the first, second and third vertical bars 331a, 331b and 331c; The fourth driving shaft 332f, the fifth driving shaft 332g and the third driving shaft 332e, the fourth driving shaft 332f and the fifth driving shaft 332g which are formed to extend in the direction perpendicular to the first driving shaft 332e, A third roller 332h, a fourth roller 332i, and a fifth roller 332j which are axially coupled to the first roller 332a.

At this time, the third roller 332h, the fourth roller 332i, and the fifth roller 332j are moved by the length adjusting member 332d so that the side surface can be brought into contact with the screen insulated by the first roller portion 331 The distance from the guide frame 100 can be adjusted. The third roller 332h, the fourth roller 332i and the fifth roller 332j are axially coupled to the third drive shaft 332e, the fourth drive shaft 332f and the fifth drive shaft 332g, . The third roller 332h, the fourth roller 332i and the fifth roller 332j can be brought into contact with the lateral (thick) portion of the window frame as the slider portion 310 moves, The insect nets bent in a lattice shape by the one-roller portion 331 can be secondarily bent in a u-shape.

To this end, the third roller 332h is formed with a tapered portion at its upper portion, the fourth roller 332i is formed with a tapered portion at its lower portion, and the fifth roller 332j is formed with a tapered portion at its upper and lower ends .

According to the structural feature of the second roller portion 332 described above, when the sliding portion 310 slides from right to left in the illustrated embodiment, the inspecting net includes the third roller 332h, the fourth roller 332i, 5 rollers 332j. In this process, the second roller 332 can be firstly bent into a u-shape by the tapered portion formed at the lower end of the third roller 332h that is first brought into contact with the screening net. Then, the first bending portion bent by the first roller portion 331 can be repeatedly bent by the tapered portion formed on the upper end of the fourth roller 332i which comes into contact with the screen web for the second time. In addition, the tapered portion formed at both ends of the fifth roller 332j which is in contact with the screen web for the third time repeatedly bends the entire area bent in the above-described process, so that the screen web can be effectively wound on the window frame.

The third roller portion 333 is a member provided at the rear end of the second roller portion 332. The third roller 333 includes a third vertical bar 333a formed in a direction perpendicular to the paper surface from one end of the sliding part 310 and a second vertical bar 333a coupled to the third vertical bar 333a. The guide frame 100 is extended from the sliding member 310 in the horizontal direction with respect to the ground from the member 333b and the third height adjusting member 333c and the second and third height adjusting members 333b and 333c. A sixth roller 333f which is axially coupled to the sixth drive shaft 333d and a seventh roller 333g which is coupled to the seventh drive shaft 333e and which are axially coupled to the sixth drive shaft 333d and the seventh drive shaft 333e, ).

At this time, the height of the sixth roller 333f and the seventh roller 333g can be adjusted by the height adjusting members 333b and 333c so that the side surface of the sixth roller 333f and the seventh roller 333g can contact the insecting net formed on the window frame or the window frame. The sixth roller 333f and the seventh roller 333g are rotatably coupled to the sixth drive shaft 333d and the seventh drive shaft 333e, respectively. Accordingly, as the sliding part 310 moves, the sixth roller 333f and the seventh roller 333g can be brought into contact with the screen inspecting net so that the insect screening net is brought into close contact with the window frame.

The first roller 331f and the second roller 331g constituting the first roller portion 331 are arranged along the longitudinal direction of the bending unit 300 while the third roller portion 333 The sixth roller 333f and the seventh roller 333g constituting the sixth roller 333f may be arranged in a direction perpendicular to the paper surface, that is, along the height direction of the bending unit 300.

The sixth roller 333f and the seventh roller 333g come into contact with the lower and upper corner portions of the window frame in the process of bending the insect net to finally pressurize the insect net formed at the corner of the window frame, So that it can be brought into close contact with the window frame.

The concrete structure of the window frame bending apparatus 1 according to an embodiment of the present invention has been described, and a detailed process of the bending process of the screening bending network using the window frame bending apparatus 1 for window frames .

5 and 6 are views showing an example of a screening bending process using the screening device bending apparatus 1 for a window frame according to the present invention.

The operator can place the insect screening net on the upper portion of the window frame in a state in which the window frame is fixed to the guide frame 100. [ As described above, the guide frame 100 has a plurality of engagement protrusions 110, so that it is possible to arrange the window frame at a predetermined position.

5, the operator grasps the handle 320 formed on the bending unit 300 to move the bending unit 300 along the guide rails 310 to guide the bending unit 300 to the guide frame 100 and the window screen and the insect screening network. For example, when the operator moves the bending unit 300 from right to left as shown in the drawing, the first roller portion 331, the second roller portion 332, and the third roller portion 333 are sequentially As shown in FIG.

6 (a), when the first roller portion 331 contacts the window frame disposed in the guide frame 100, the first roller 331f and the second roller 331f constituting the first roller portion 331g are rotated by frictional force and the insecting net formed on the upper edge P1 of the window frame can be bent in a L-shape by the projections formed in the lower portion of the first roller 331f and the second roller 331g in this process have. Since the first roller 331f and the second roller 331g are sequentially disposed along the longitudinal direction according to the present invention, the insecting net is firstly bent by the first roller 331f, 331g.

Thereafter, the worker can move the bending unit 300 continuously so that the insect net curved by the first roller portion 331 can be brought into contact with the second roller portion 332. 6B is a view showing the third roller 332h constituting the second roller portion when it contacts the screening net. As described above, the third roller 332h can be adjusted in the distance from the guide frame 100 by the length adjusting member 332d, so that the side surface of the third roller 332h is thicker than the thickness As shown in FIG. In this case, the insecting net is once again bent at the lower edge P2 of the window frame by the tapered portion formed at the lower portion of the third roller 332h, and is bent in a u-shape as a whole. Although only the third roller 332h is shown in the illustrated embodiment, it should be understood that the fourth roller 332i and the fifth roller 332j, which are the other rollers constituting the second roller portion, bend the screen net in a similar process will be.

Finally, the worker continuously moves the bending unit 300 in the moving direction, and the screen web bent step by step by the first and second roller portions 331 and 332 is finally bent by the third roller portion 333 Can be done.

6C is a view showing the sixth and seventh rollers 333g and 333f constituting the third roller portion 333 in contact with the screen web.

The height of the sixth roller 333f and the seventh roller 333g can be adjusted by the height adjusting members 333b and 333c so that the side surfaces facing each other can be brought into contact with the insecting net formed on the window frame or the window frame . Accordingly, the sixth roller 333f is brought into contact with the lower edge P2 of the window frame in the course of the rotation, and the seventh roller 333g can be brought into contact with the upper edge P1 of the window frame in the course of the rotation. Therefore, the insect nets bent in a u-shape in a stepwise manner by the first and second roller portions 331 and 332 can be finally bent by the third roller portion 333 and brought into close contact with the window frame.

As described above, if the insect screening network is bent using the insect screen inserting apparatus for a window frame 1 according to the present invention, a process of repeatedly bending the insect screening network can be automatically performed by only one movement of the bending unit 300, The breakage of the screening net can be minimized by stepwise bending the screening net using a plurality of rollers during the bending process.

In some other embodiments, the screen web bending apparatus 1 for a window frame according to the present invention can automatically adjust the gap between the rollers.

The screen web folding apparatus 1 for a window frame according to the present invention may include a third roller portion 332 constituting the third roller portion 332 according to a vertical height of the first roller portion 331 and a horizontal height of the second roller portion 332 The interval between the sixth roller 333f and the seventh roller 333g can be automatically set.

The control module (not shown) may include a first height adjusting member 331c, a length adjusting member 332d (not shown) ), The second height adjusting member 333b, and the third height adjusting member 333c. Accordingly, the control module (not shown) can electronically control the protrusion height or protrusion length of each roller by transmitting a control signal to each member through the set value input from the operator.

At this time, the control module (not shown) controls the second height adjusting member 333b and the third height adjusting member 333c based on the set values of the first height adjusting member 331c and the length adjusting member 332d received from the operator ) Can be automatically calculated.

As described above, the first height adjusting member 331c is a member for adjusting the height of the first and second rollers 331f and 331g, and the set value can be determined according to the width of the window frame. The length adjusting member 332d is a member for adjusting the protruding length of the third to fifth rollers 332h, 332i and 332j, and the set value can be determined according to the thickness of the window frame.

That is, the control module (not shown) can estimate the size of the window frame by analyzing the set value of the first height adjusting member 331c and the set value of the length adjusting member 332d, And the seventh roller 333g can accurately contact the upper and lower edges of the window frame. The control module (not shown) determines the set values of the second height adjusting member 333b and the third height adjusting member 333c according to the calculated result, and even if the operator does not input the set value, the sixth roller 333f The interval between the seventh rollers 333g can be automatically controlled.

The window screening bending apparatus 1 for a window frame according to the present invention may be constructed such that a portion that can be damaged by an external force such as friction or impact such as the handle 320 of the bending unit 300, .

The plastic composition according to one embodiment of the present invention includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. Accordingly, the screen screening bending apparatus 1 for a window frame according to the present invention can improve the mechanical properties such as heat resistance and durability, and the twisting phenomenon can be improved.

Polypropylene resin is a thermoplastic resin which is obtained by polymerization of propylene and is known as an environmentally friendly material which is inexpensive in performance and does not have a risk of being in contact with the contents of foods or cosmetics. The polypropylene resin is excellent in chemical resistance, mechanical properties , And excellent in thermal properties. The polypropylene may use at least one selected from a propylene homopolymer, a random copolymer and a block copolymer, but a homopolymer and a random copolymer are mixed in a weight ratio of 3: 2 to improve mechanical properties .

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and has excellent flowability, rigidity, impact resistance, electrical insulation, moldability, and cold resistance. The high-density polyethylene resin may be mixed with the above-mentioned polypropylene resin to improve the moldability by reinforcing the tensile force in the production of the plastic sheet or the product, and a variety of known products may be used.

The talc improves the mechanical properties such as the strength and heat resistance of the plastic composition, and it is preferable to use a talc powder having a particle size of 150 to 200 mesh for mixing with polypropylene resin or the like. The talc may be used in admixture with other filler components, and may preferably be mixed with the dolomite powder at a weight ratio of 1: 1 to contribute to improvement of the durability of the plastic composition.

Germanium is a silvery white metal, which has the effect of promoting metabolism by emitting a large amount of far infrared rays and anions which are beneficial to the human body. Also, due to its semiconducting nature, germanium has a function of increasing the vitality of germanium ions (outer electrons) when they come into contact with the skin. When entering the body, it is released out of the body within 20 ~ 30 hours with various harmful substances, so there is no poisoning or side effects at all. Particularly, when the particles of inorganic germanium come into contact with human skin, semiconductor properties are introduced into the skin tissue by the osmotic action of the outer electron. It has been found that germanium, which penetrates into capillaries in subcutaneous tissues, moves electrons in the blood vessels through the blood vessel walls, performs blood purification, normalizes blood, and discharges excess electron flow to relieve pain. The germanium can be used in the form of powder. It is preferable that the germanium ore is finely cut to 3 cm or less and then the cut germanium ore is pulverized to a particle size of 80 to 100 mesh.

In one embodiment, the plastic composition preferably comprises 110 to 130 parts by weight of high density polyethylene resin, 170 to 190 parts by weight of talc, and 1 to 10 parts by weight of germanium powder per 100 parts by weight of the polypropylene resin. When the plastic sheet is produced by using the plastic composition, it is important to control the specific gravity of the plastic composition in order to eliminate the twisting phenomenon. The specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05. That is, when the content of the high-density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight based on 100 parts by weight of the polypropylene resin, mechanical properties such as durability and the like are limited. Is more than 130 parts by weight or the talc is more than 190 parts by weight, there is a possibility that the specific gravity of the plastic composition is increased and the moldability may be deteriorated. If the amount of the germanium powder is less than 1 part by weight with respect to 100 parts by weight of the polypropylene resin, far infrared rays emission effect due to germanium is difficult to manifest. If the amount is more than 10 parts by weight, .

In one embodiment, the plastic composition described above may comprise glass fiber reinforced plastic to enhance impact resistance. Fiberglass Reinforced Plastic (FRP) is a material made mainly of glass-based minerals and a combination of glass-based minerals with aromatic nylon fibers and thermosetting resins. The glass-based mineral may be at least one selected from the group consisting of silica sand, limestone, feldspar, and soda ash, but is not limited thereto. As the thermosetting resin, various known thermosetting resins can be used, and preferably, a polyester or an epoxy resin can be used. Glass fiber reinforced plastics can be produced by mixing materials such as glass-based minerals and putting them in a melting furnace. Each air layer sealed between the glass fibers functions as a heat insulating layer, so that it is excellent in nonflammability, sound absorption properties and workability. It is also stronger than iron, lighter than aluminum, and does not rust. Also, it is excellent in nonflammability and is not deformed by heat and is easy to be processed. At this time, it is preferable to add glue to improve the mixing property with glass fiber reinforced plastic (pellet type) and PVC. Glue is a substance that solidifies the liquid of organs such as animal's skin, intestines, bones, etc., and can solve the problems such as the release of environmental hormones while improving the binding force of each component. The glass fiber reinforced plastic and the glue are preferably contained in an amount of 15 to 25 parts by weight and 2 to 7 parts by weight based on 100 parts by weight of the polypropylene resin. If the amount is less than the above range, the impact resistance strengthening and embossing may be deteriorated, and if it exceeds the above range, a cracking phenomenon may occur during production of the product, which is uneconomical.

In one embodiment, the plastic composition according to the present invention may comprise cork powder to improve the elasticity. The cork powder can be prepared by removing the shell of oak oak and then crushing it. For the cork powder to be mixed with polypropylene resin or the like, it is preferable to use fine pulverized particles which are sieved through a mesh of 400 mesh or more. The cork powder is preferably contained in an amount of 5 to 10 parts by weight based on 100 parts by weight of the polypropylene resin. When the cork powder is less than 5 parts by weight, the degree of improvement of the elasticity is insignificant. When the cork powder is more than 10 parts by weight, voids formed in the inside of the product during manufacture may be increased and durability may be weakened.

In addition, sucrose (C12H22O11) powder may be further added to improve the mixing property of the cork powder and other ingredients. The sucrose not only smoothes the pores formed between the cork powder, but also tends to become viscous during the mixing process with the PVC, so that it can catch the molecules that cause the problem of bad odor, which can contribute to solving the problem of bad odor. The sucrose is preferably a powder that has been passed through a 500-mesh net, and is preferably contained in an amount of 1 to 4 parts by weight based on 100 parts by weight of the polypropylene resin. When sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant. When the amount of sucrose is more than 4 parts by weight, it is not only economical but also may weaken the mechanical properties of the product.

In one embodiment, the plastic composition may comprise a white powder. Potassium alum (potassium aluminum sulfate, AlK (SO4) 2 · 12H2O) can be used as the alum, and it can be obtained from natural alum. Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed. It is preferable that the alum is contained in an amount of 2 to 5 parts by weight based on 100 parts by weight of the polypropylene resin. When the content of alum is less than 2 parts by weight, the effect by alum is insignificant, and when it is more than 5 parts by weight, it is uneconomical.

In one embodiment, the present invention may include Boehmite (AlO (OH) 2) to improve antibacterial properties. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The boehmite is preferably contained in an amount of 3 to 8 parts by weight based on 100 parts by weight of the polypropylene resin. If the content of boehmite is less than 3 parts by weight, it is difficult to exhibit an antimicrobial effect to be achieved. If the content is more than 8 parts by weight, there is a fear that mixing property with other components is impaired.

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

[Example 1]

180 kg of polypropylene resin, 200 kg of high density polyethylene resin (HDPE), 310 kg of talc and 15 kg of germanium powder were mixed to prepare a plastic composition.

[Example 2]

And 36 kg of glass fiber reinforced plastic and 9 kg of glue were further mixed to prepare a plastic composition.

[Example 3]

9 kg of cork powder, 5 kg of sucrose powder, 5 kg of white powder, and 9 kg of gamma-boehmite were further mixed to prepare a plastic composition.

[Comparative Example]

Was prepared in the same manner as in Example 1, except for talc, and this was used as a comparative example.

[Experimental Example 1: Evaluation of impact resistance]

A specimen (20 cm * 30 cm, thickness 20 mm) was prepared using the plastic compositions of the examples and comparative examples. A weight of 3 kg was dropped at a height of 2 m and the degree of breakage of each specimen was measured. .

[Table 1]

As can be seen from the above Table 1, it was found that the embodiments including talc are superior in impact resistance to the comparative examples which do not include talc. In particular, in Examples 2 and 3 containing glass fiber reinforced plastics, the best results were obtained.

[Experimental Example 2: Evaluation of heat resistance]

The specimen of Experimental Example 1 was heated for 3 hours in a hot air circulating heating furnace maintained at 80 ° C, and yellowing degree was visually observed. The results are shown in Table 2 below.

[Table 2]

As can be seen from the above Table 2, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The antibacterial activity test (JIS Z 2801) was carried out for Example 1, Example 3 and Comparative Example. Aspergillus niger ATCC 9642 (fungus) was used as the test strain and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 3 below.

[Table 3]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 3, it was predicted that the antibacterial activity of Example 3 including gamma-boehmite was much better than those of other cases.

In the meantime, it is preferable that a part where the connection or adhesion between the different members constituting the screen web bending apparatus 1 for a window frame according to the present invention (for example, a coupling between the guide frame 100 and the engagement protrusion 110, And the like) can be adhered by the adhesive composition according to the present invention.

The adhesive composition according to one embodiment of the present invention is an adhesive composition comprising a base and a curing agent, wherein the base is composed of 30 to 90 parts by weight of an ethylene vinyl acetate (EVA) resin, 1 to 30 parts by weight of polyvinyl alcohol (PVA) 10 to 30 parts by weight of water, 5 to 30 parts by weight of calcium carbonate, 0.1 to 1 part by weight of a surfactant and 1 to 20 parts by weight of a thixotropic agent, and the curing agent includes an isocyanate compound. The present invention relates to a water-soluble two-component adhesive composition comprising a subject and a curing agent, which can be applied and cured to produce an adhesive sheet or an adhesive, and is excellent in physical properties such as adhesiveness and heat resistance, Inorganic board such as wood board or magnesium board, and PVC sheet.

The subject basically comprises an ethylene vinyl acetate (EVA) resin, polyvinyl alcohol (PVA), water, calcium carbonate, a surfactant and a thixotropic agent, the ethylene vinyl acetate resin being the main component of the subject, The strength of the adhesive sheet or the adhesive can be kept constant. Conventionally, an epoxy resin is used as a main component of an adhesive sheet or an adhesive. However, in the case of an adhesive sheet or an adhesive using an epoxy resin, volatile organic compounds such as benzene toluene are released to adversely affect the environment and human body. However, the present invention has solved the problems such as environmental problems by excluding the epoxy resin.

Polyvinyl alcohol (PVA) plays a role in improving the heat resistance, water resistance and adhesiveness of an adhesive sheet or adhesive to be produced. The polyvinyl alcohol is preferably contained in an amount of 1 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. When the amount of the polyvinyl alcohol is less than 1 part by weight, it is difficult to improve the heat resistance or the like, and when it exceeds 30 parts by weight, the relative content of ethylene vinyl acetate is decreased, so that the cohesive force of the adhesive sheet or the adhesive may be weakened. In addition, when the present invention is used in an ondol floor or the like, antimony oxide and zirconium oxide may be used together with polyvinyl alcohol in order to supplement the functionality of polyvinyl alcohol. Antimony oxide and zirconium oxide may enhance the heat resistance of the adhesive sheet or adhesive to be produced, and they are preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. Below this range, the effect of improving the heat resistance is insignificant, and when it exceeds the above range, it is not economical.

Water is used as the solvent of the subject. Unlike conventional adhesive sheets or adhesives, the present invention has the effect of solving environmental pollution problems because volatile organic solvents are not used. The water is preferably contained in an amount of 10 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. If the amount of water is less than 10 parts by weight, the ethylene vinyl acetate resin or the like can not be effectively dissolved, and if it exceeds 30 parts by weight, the water may become too thin to lower the strength of the adhesive sheet or the adhesive.

Calcium carbonate controls the viscosity of the adhesive composition and reduces shrinkage during curing. The calcium carbonate is preferably contained in an amount of 5 to 30 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate (EVA) resin. When the amount of calcium carbonate is less than 5 parts by weight, sufficient shrinkage does not occur during curing, and the hardness of the adhesive sheet or adhesive may become poor. When the amount exceeds 30 parts by weight, the viscosity may become too tight and productivity may be deteriorated. In addition, the present invention may use various materials such as wormwoods and clays to replace calcium carbonate. For example, dolomite and / or talc may be used. At this time, it is preferable to mix dolomite and talc in a weight ratio of 1: 1 in order to improve mechanical properties. It is also preferable that the powder has a particle size of 150 to 200 mesh. When the powder is used to have a particle size of 150 to 200 mesh, it is mixed with other components such as ethylene vinyl acetate resin Can be improved.

The surfactant is used to reduce the surface tension when mixing the adhesive composition and to improve the application property. The surfactant is preferably contained in an amount of 0.1 to 1 part by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. As the surfactant, known nonionic surfactants and anionic surfactants can be used, but in order to effectively reduce the surface tension, it is preferable to use a gemini type sulfonic acid type surfactant containing an alkyl chain of 8 to 14 carbon atoms.

The thixotropic agent is to prevent the adhesive composition from flowing down by suppressing the separation phenomenon between the subject and the curing agent when the adhesive composition is applied to the adhesive sheet or the adhesive, and various known various substances such as silica, acryl copolymer and the like But it is preferable to use a clay. Clay is an aggregate of fine hydrated silicate minerals. It refers to a material that is mixed with water in an appropriate amount to produce plasticity when kneaded, rigidity when dried, and sintered when baked at high temperature. Specifically, at least one powder selected from the group consisting of kaolinite, fumed silica and bentonite may be used, but in order to obtain the best effect, it is preferable to use a mixture of fumed silica and bentonite in a weight ratio of 1: 1. The thixotropic agent is preferably contained in an amount of 1 to 20 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin. If the thixotropic imparting agent is less than 1 part by weight, the flowability can not be controlled sufficiently, and if the thixotropic imparting agent is more than 20 parts by weight, the flowability is excessively vanished and the productivity may be lowered.

In addition, the subject may further include sodium silicate to improve the adhesive strength of the adhesive sheet or adhesive to be produced. Unlike conventional adhesives, sodium silicate does not cause pollution and is environmentally friendly and has excellent adhesion. The sodium silicate is preferably contained in an amount of 3 to 7 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of sodium silicate is less than 3 parts by weight, the degree of improvement of the adhesion performance is insignificant. When the amount is more than 7 parts by weight, miscibility with other components may be deteriorated.

The subject may further include molybdenum disulfide to improve the abrasion resistance of the adhesive sheet or adhesive to be produced. Molybdenum disulphide (MoS2) is found in thin veins in minerals and is mined and used as a lubricant. Molybdenum disulfide (MoS2) has inherent properties of a hexagonal crystal structure in which shear is likely to occur, such as graphite, but the lubricating action is superior to that of graphite. The molybdenum disulfide is preferably contained in an amount of 1 to 5 parts by weight based on 30 to 90 parts by weight of the ethylene vinyl acetate resin based on the solid content. When the amount of the molybdenum disulfide is less than 1 part by weight, the abrasion resistance can not be improved effectively, and when it exceeds 5 parts by weight, the adhesion strength may be deteriorated. At this time, copper powder may be mixed with molybdenum disulfide.

The subject may further include a flame retardant agent to improve the flame retardancy of the adhesive sheet or adhesive to be produced. The flame retardant is preferably contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the ethylene vinyl acetate resin. When the amount of the flame retardant is less than 1 part by weight, the degree of improvement of the flame retardancy is insignificant. When the amount is more than 5 parts by weight, the flame retardant agent is not only economical but also has poor compatibility with other components. The flame retardant may be a white powder. Potassium alum (potassium aluminum sulfate, AlK (SO4) 2 · 12H2O) can be used as the alum, and it can be obtained from natural alum. Concretely, it can be produced by dissolving alunculus in water and filtering it, then breaking it, and cooling it if irregularly shaped crystals are formed.

In addition, the subject may further include aluminum hydroxide to improve the antimicrobial properties of the adhesive sheet or adhesive to be produced. It is preferable to use boehmite (AlOH (OH)) as the aluminum hydroxide. Boehmite can be any of γ-boehmite, α-boehmite and pseudo-boehmite. Of these, γ-boehmite excellent in crystallinity and excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property is preferably used. The γ-boehmite can be prepared by supercritical synthesis of only water (pure water) and aluminum (Al). The aluminum hydroxide is preferably contained in an amount of 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate. If the content of aluminum hydroxide is less than 5 parts by weight, it is difficult to exhibit the antimicrobial effect to be achieved. If the content is more than 10 parts by weight, the compatibility with other components may be impaired.

As the curing agent, those containing an isocyanate compound can be used. The isocyanate compound has excellent solubility in water, and the curing agent can be uniformly mixed on the subject to maintain proper viscosity and hardness, thereby shortening the curing time and prolonging the pot life when mixing the curing agent and the curing agent, . The isocyanate compound is preferably a compound containing two or more isocyanate groups in one molecule, and is preferably a compound containing at least two isocyanate groups in a molecule, such as toluene-diisocyanate (TDI), hydrogenated TDI, trimethyl propane- Triisocyanate (TTI), diphenylmethane-4,4-diisocyanoate (MDI), hydrogenated MDI, or hexamethylene-diisocyanate (HDI) Is preferably used. The curing agent is preferably contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the subject.

The above-mentioned adhesive sheet or adhesive is prepared by preparing a water-soluble two-component adhesive composition by mixing a subject and a curing agent, and then applying and curing the adhesive composition to a work site. If necessary, And may further include a dispersant, an antifoaming agent, an antiseptic agent, a thickener, and the like within the range not impairing the object of the present invention, and may further include a coloring component to realize various colors of the adhesive sheet or adhesive to be produced have.

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

[Example 1]

80 parts by weight of ethylene vinyl acetate, 20 parts by weight of polyvinyl alcohol, 25 parts by weight of water, 10 parts by weight of calcium carbonate, 1 part by weight of a surfactant and 5 parts by weight of a thixotropic agent were mixed to prepare a subject. Toluene-diisocyanate and 25 parts by weight of a curing agent containing toluene-diisocyanate (TDI) were mixed and cured to prepare an adhesive sheet or an adhesive.

At this time, a gemini surfactant having 8 carbon atoms was used as a surfactant. The overall process of synthesis of the surfactant started with the reaction of diamine with 1-bromoalkane. 0.1 mole of N, N, N ', N'-tetramethyl-1,3-diaminopropane (N, N', N'- -bromooctane) was added to 300 g of acetonitrile and stirred for 30 minutes. The solution was refluxed at 353 K for 12 hours, and then the acetonitrile solvent was removed using a rotary evaporator. 500 g of diethylether was added to the resulting product to recrystallize the product. After filtering, it was washed with 500 g of diethyl ether and unreacted impurities were removed. The product thus obtained was treated in a 323 K vacuum oven for 12 hours to remove residual solvent to prepare a gemini surfactant.

[Example 2]

Except that 5 parts by weight of atomium oxide and 5 parts by weight of zirconium oxide were further added in the form of powder in the same manner as in Example 1,

[Example 3]

Except that 5 parts by weight of sodium silicate, 3 parts by weight of molybdenum disulfide, 3 parts by weight of alumina and 8 parts by weight of? -Behohexite were further added in powder form to the subject, and this was prepared in the same manner as in Example 3 Respectively.

[Comparative Example]

A comparative epoxy epoxy flooring adhesive (SEP-4300, manufactured by Samchang Chemical Co., Ltd.) was used as a comparative example.

[Experimental Example 1: Adhesion Test]

An adhesive strength test (KS F 4715) was conducted for Examples and Comparative Examples, and the results are summarized in Table 4 below.

[Table 4]

The adhesion strength of LH construction was 0.8 N / mm < 2 > or more, and both the examples and the comparative examples satisfied the acceptance criteria. However, it was found that the bonding strengths of the examples were superior to those of the comparative examples.

[Experimental Example 2: Evaluation of heat resistance]

The adhesive sheets or adhesives of Examples and Comparative Examples were heated for 8 hours in a hot-air circulating heating furnace maintained at 80 캜, and the yellowing degree was visually observed. The results are shown in Table 5 below.

[Table 5]

As can be seen from the above Table 5, in the Examples, yellowing portions were hardly observed unlike the Comparative Examples. As a result, it was found that the heat resistance of the example was very excellent as compared with the comparative example.

[Experimental Example 3: Evaluation of antimicrobial activity]

The adhesive compositions of Example 3 and Comparative Examples were subjected to an antibacterial activity test (JIS Z 2801). Aspergillus niger ATCC 9642 (fungus) was used as a test strain and the antibacterial activity (antibacterial activity value) was evaluated and shown in Table 6 below.

[Table 6]

The antimicrobial activity value refers to a value obtained by evaluating the degree of antimicrobial activity by comparing the number of strains cultured for a certain period of time. When the value is 1 or more, 90% or more of the strains are present, 2 or more are 99% , More than 99.99% of the strain is over 4, and more than 5 is more than 99.999% of the strain is killed.

As can be seen from the above Table 6, it was found that the antibacterial activity of Example 3 including gamma-boehmite was much better than that of Comparative Example.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

1: Insect bending device for window frames
100: guide frame
200: Guide rail
300: Bending unit
331: first roller portion
332: second roller portion
333: third roller section

Claims (2)

A guide frame formed at an edge of the table and fixing the window frame at a predetermined position;
A guide rail formed in a direction parallel to the longitudinal direction of the guide frame and disposed at a position spaced apart from the guide frame by a predetermined distance; And
The guide frame is installed on the guide rail and reciprocates in the longitudinal direction along the guide rail so as to bend the insect control net arranged on the upper part of the window frame arranged in the guide frame step by step, And a winding unit
Wherein the guide frame is formed with grooves along the longitudinal direction and a plurality of engagement protrusions are formed along the grooves so that the outer frame of the window frame is fixedly disposed at the grooves,
The folding unit may include a sliding portion formed with a coupling groove at a lower portion thereof and coupled to the guide rail by way of the coupling groove, a handle portion for holding and manipulating the folding unit by the user, And a roller portion contacting the insect-control net during the movement of the sliding portion to bend the insect-control net in a predetermined form,
The roller unit may include a first roller unit, a second roller unit and a third roller unit sequentially formed along the longitudinal direction of the bending unit,
The first roller portion may include a first vertical bar and a second vertical bar formed in a direction perpendicular to the paper surface from one end of the sliding portion, a first height adjusting member coupled to the first vertical bar and the second vertical bar, A first driving shaft and a second driving shaft extending from the first height adjusting member in a direction parallel to the paper surface, the first driving shaft and the second driving shaft extending from the sliding portion in the direction of the guide frame, And a second roller axially coupled to the second drive shaft,
The second roller unit may include a first horizontal bar, a second horizontal bar, and a third horizontal bar formed in a horizontal direction with respect to the paper surface from the sliding unit, and a length adjusting unit coupled to the first horizontal bar, the second horizontal bar, A fourth driving shaft and a fifth driving shaft extending from the length adjusting member in a direction perpendicular to the paper surface, a third roller axially coupled to the third driving shaft, and a third driving shaft axially coupled to the fourth driving shaft A fourth roller and a fifth roller axially coupled to the fifth drive shaft,
The third roller portion may include a third vertical bar formed in a direction perpendicular to the paper surface from the other end of the sliding portion, a second height adjusting member and a third height adjusting member coupled to the third vertical bar, A sixth driving shaft and a seventh driving shaft extending from the sliding portion in the direction of the guide frame and extending from the third height adjusting member in a horizontal direction with respect to the ground, A roller, and a seventh roller axially coupled to the seventh drive shaft.
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