KR101938068B1 - Nonflammable Gasket For Door Frame Comprising Two Parts of Different Material Property and the Manufacturing Apparatus thereof - Google Patents

Abstract

The present invention relates to a fireproof gasket for a door frame, which comprises a sealing member of a flexible material formed with a coating layer for elastic reinforcement and gap-blocking on the surface of a plate-shaped fiberglass fabric woven in a fire- retardant fiberglass, And a fixing member which is formed by extrusion molding with a synthetic resin having a flame retardant property so as to be held by the fixing groove of the door frame and is fixed to the fixing groove of the door frame, The groove is formed in the longitudinal direction and both ends of the sealing member are fixedly inserted into the insertion groove of the engaging member so that the engaging member is divided into an inner portion surrounded by the sealing member and an outer portion exposed to the outside of the sealing member , The inner side portion and the outer side portion of the engaging member And forming a plurality of the pinching projections to enhance the frictional force of the surface of the fixing groove of the door frame to the outer surface of the outer portion is formed.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a fireproof gasket for a door frame and a manufacturing method thereof,

The present invention relates to a fireproof gasket for a door frame, and more particularly, to a foamed glass fabric formed by weaving a fiberglass which is a non-combustible material, and a coating layer for reinforcing the elasticity and blocking the gap, To a flame retardant gasket for a door frame which is formed by joining together engaging members formed by extrusion of a resin so as to be stably inserted into a fixing groove and fitted.

Conventionally, a gasket for a door frame is generally manufactured by extrusion or injection molding of a synthetic resin material, and is fused or burned at a high temperature to generate a toxic gas to cause a suffocation or gasket function, thereby causing a secondary fire.

In order to solve this problem, Korean Utility Model Registration No. 20-0474104 proposes a gasket for a door frame in which a fiberglass of non-burnable material is woven instead of a gasket of a synthetic resin material, and a silicone is coated on one side or both sides of a flame retardant property .

However, since the regenerated utility model is formed only in a state in which the entirety of the tubular fiberglass cloth is coated with silicone and insufficient in resiliency, the gasket is repeatedly opened and closed during the process of being inserted into the door frame, The problem often arises.

Registered utility model No. 20-0474104 (announcement of 2014.08.21)

It is an object of the present invention to provide a door frame which is made of a joint of two different materials in which a material used together with a hollow member of a synthetic resin material is used so as to be stably fixed without being detached from a fixing groove of a door frame while using a gasket using a fiberglass- And to provide a non-combustible gasket for use.

Another object of the present invention is to provide a door frame made of a joining of two different materials in which a material including molding and insertion dies for stably securing both ends of a closure member to an insertion groove of a fitting member for manufacturing the fire- And to provide a non-combustible gasket manufacturing apparatus for the same.

Other objects of the present invention can be achieved by the detailed description of the present invention described with reference to the accompanying drawings.

In order to achieve the above object, a fireproof gasket for a door frame, which is made of a material of two different members of the present invention, is made of a flexible material having a coating layer for elastic reinforcement and interstitial barrier formed on the surface of a plate- shaped fiberglass fabric woven with a fire- And a clamping member configured to be extruded and molded in a state of being inserted into the fixing groove of the door frame so as to be resiliently retained in a state in which there is no external force,

Wherein the insertion member has insertion grooves formed in the longitudinal direction for collecting and fixing the left and right ends of the sealing member on the right and left sides, both ends of the sealing member being closely inserted into and fixed to the insertion groove of the insertion member, Wherein the inner side portion and the outer side portion of the engaging member are respectively formed with a hollow in the longitudinal direction and the outer side of the inner side portion and the outer side portion of the engaging member are respectively formed with a hollow in the longitudinal direction, A plurality of interdigitated protrusions are formed for enhancing the frictional force.

In addition, the coating layer may be formed of a material highly compatible with the insert member so that the left and right ends of the sealing member may be integrally molded and held in the insertion groove of the insert member in the extrusion molding process of the insert member .

According to another aspect of the present invention, there is provided an apparatus for manufacturing a fireproof gasket for a door, the apparatus comprising: a sealing member supply device for providing the sealing member in the form of a roll; An extrusion forming and inserting device for collecting the left and right both ends of the sealing member to be pushed into the insertion groove of the engaging member and a pressing member provided at the rear end of the extrusion forming and inserting device, And a cutting device installed at a rear end of the cooling device to cut the gasket to a predetermined length.

Here, the extrusion molding and inserting device includes a resin supply portion, and molding and insertion dies for molding the resin supplied from the resin supply portion into the shape of the fitting member and joining the sealing member,

The molding and insert dice comprise:

A receiving groove for guiding the sealing member at an upper end thereof, the receiving groove having a central portion rising from the front end to the rear end and being laterally lowered so that both ends thereof are narrowed toward each other; And a resin transfer groove corresponding to the cross-sectional shape of the engaging member.

The forming and inserting dies include a first section formed with a receiving groove for guiding the closure member, a second section extending from the first section, the receiving groove and the resin transfer groove being present in a state of being separated from each other, A second section extending from the second section to the left and right ends of the sealing member to guide the left and right ends of the sealing member to close the insertion groove of the insertion member, And a third section inserted into the resin of the area to be molded.

According to the flame retardant gasket for a door frame made of the material of the present invention which is made by joining two different materials according to the present invention, it is possible to prevent leakage of toxic gas and prevention of flame transition due to fire- , And at the same time, the presence of the interposition member of the synthetic resin material can fundamentally prevent the gasket from being separated from the gasket due to the repeated opening and closing of the door.

In addition, as a method for producing the same, extrusion molding and insert die having a special structure can improve the productivity of the flame-retardant gasket for a door frame of the present invention and produce a product of good quality.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of an incombustible gasket for a door comprising a junction of two different materials in accordance with an embodiment of the present invention, in which the sealing member and the engaging member are joined to each other;
Fig. 2 is a schematic view showing a cross-sectional shape of a fireproof gasket for a door comprising a junction of two different materials according to an embodiment of the present invention; Fig.
3 is a schematic structural view of a fireproof gasket manufacturing apparatus for a door comprising a junction of two different materials according to an embodiment of the present invention;
FIG. 4 is a detailed view of the molding and insertion dies of FIG. 3 as viewed from the front; FIG.
Fig. 5 is a detailed configuration diagram of the molding and insertion dies of Fig. 3, as viewed from the rear end; Fig.
FIG. 6 is a view showing the surfaces of the first to fourth dice constituting the molding and insertion dies of FIG. 3; FIG.
FIG. 7 is a schematic view of third and fourth dice corresponding to a second section and a third section of a die for molding and insertion according to an embodiment of the present invention; FIG. And
8 is a sectional view showing a process in which both ends 12 of the closure member 10 are closely inserted into the insertion groove 22 of the engaging member 20 according to the embodiment of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical meanings and concepts of the present invention.

1 is a schematic perspective view of an incombustible gasket for a door comprising a junction of two different materials according to an embodiment of the present invention, in which the sealing member and the engaging member are joined to each other, and Fig. Sectional view showing a cross-sectional shape of a fireproof gasket for a door comprising a junction of two different materials according to an embodiment. Referring to FIGS. 1 and 2, a flame-retardant gasket 1 for a door comprising a junction of two different materials according to an embodiment of the present invention basically includes a sealing member 10 and a fitting member 20 .

The sealing member 10 is made of a flexible material by forming a coating layer 17 for elastic reinforcement and crevice on the surface of the plate-shaped fiberglass cloth 15 woven from incombustible fiberglass. Therefore, the sealing member 10 can be fixedly inserted into the insertion groove 22 of the engaging member 20 at both ends 12 in a circular shape as shown in Fig. The fiberglass fabric 15 can be manufactured by various weaving methods and has a certain degree of elasticity due to the formation of the coating layer 17 so that the shape thereof can be maintained after the bulb shape is completed. It is possible to achieve the object of the present invention.

The engaging member 20 is configured so as to be extruded and molded in a synthetic resin having flame retardant properties so as to be elastically retained in a predetermined shape when there is no external force, and to be fixed in a state of being inserted in the fixing groove of the door frame. As the synthetic resin having flame-retardant properties, flame-retardant silicone which maintains ductility during drying can be used, but it is not limited thereto and various materials having similar properties can be used.

As shown in the drawing, the insertion member 20 has insertion grooves 22 formed in the longitudinal direction for collecting and fixing the left and right ends 12 of the sealing member 10 on the right and left sides. The depth of the insertion groove 22 can be appropriately set in consideration of the adhesive strength between the sealing member 10 and the engaging member 20.

Adhesive may be used for strong adhesion between both ends 12 of the sealing member 10 inserted into the insertion groove 22 of the insertion member 20 and the insertion groove 22, The sealing member 10 may be configured to have a strong adhesion by itself due to compatibility between the sealing member 20 and the sealing member 10.

Both ends 12 of the sealing member 10 are closely inserted and fixed to the insertion groove 22 of the insertion member 20 so that the insertion member 20 is inserted into the insertion hole 22 of the insertion member 20, And an outer side portion 23 exposed to the outside of the sealing member 10. The inner side portion 21 and the outer side portion 23 of the engaging member 20 are respectively hollowed in the longitudinal direction by hollows 25, And a plurality of engaging projections 27 for reinforcing the frictional force with the surface of the fixing groove of the door frame are formed on the outer surface of the outer side portion 23.

The inner side portion 21 is formed in the original bulb shape by the self-elastic force when the inner side portion 21 is in the collapsed state due to external force only by the sealing member 10 To solve the problem that can not be recovered, so that the sealing member 10 keeps the bulb shape without being folded.

2, upper and lower double hollows are formed in the inner side portion 21, and one hollow is formed in the outer side portion 23. As shown in FIG. In addition to the purpose of lowering the amount of material used, the formation of the hollow can reduce the weight of the product, thereby reducing the tendency of the product to be detached from the door frame due to the load applied to the door frame.

In the present invention, the coating layer 17 is formed so that the left and right ends 12 of the sealing member 10 are inserted into the insertion groove 22 of the engaging member 20 during the extrusion molding process of the engaging member 20 And may be formed of a material having high compatibility with the interposition member 20 so as to be integrally molded and held. By selecting a material having high chemical compatibility with the interposing member 20 as the coating layer 17 as described above, it is possible to avoid the use of a separate adhesive between the sealing member 10 and the interposing member 20, Can be improved.

3 is a schematic structural view of a fireproof gasket manufacturing apparatus for a door frame in which a material according to an embodiment of the present invention is formed by joining two different members. Referring to FIG. 3, in another embodiment of the present invention, an apparatus for manufacturing a fireproof gasket for a door comprising a junction of two members having different materials includes a sealing member supply device 100, an extrusion molding and inserting device 200, a cooling device 300 ), And a cutting device 400, as shown in Fig.

The sealing member supply apparatus 100 may be provided with an auxiliary roll 110 in order to provide the sealing member 10 in a rolled state as shown and to easily replace the roll.

In addition, the tension holding device 500 may be included at the rear end of the closure member feeder 100. As an example, the closure member 10 to be fed may pass through a plurality of rolls disposed in close proximity to each other, The tension can be adjusted by adjusting the rotational friction of the roll by hanging the weight 501 on one of the rolls.

The extrusion molding and inserting device 200 extrudes the insert member 20 and simultaneously collects the left and right ends 12 of the seal member 10 supplied from the seal member feeder 100 to feed the insert member 20, And a die 210 for forming and inserting the insert into the insertion groove 22 of the die.

The cooling device 300 is installed at the rear end of the extrusion molding and inserting device 200 and is connected to the gasket 10 to which the sealing member 10 and the engaging member 20 are coupled by the extrusion molding and inserting device 200 The cooling water of the water tank 310 may be periodically exchanged so as to cool the water in the water tank 310 at a predetermined temperature Or less.

The cutting device 400 is installed at the rear end of the cooling device 300, passes through the cooling device 300, cuts the completely dried gasket to a predetermined length, and discharges the gasket to the rear end. The cutting device 400 can grind one end of the gasket and continuously pull it, cut it in accordance with the set length, and discharge it.

Fig. 4 is a detailed configuration diagram of the molding and insertion dies of Fig. 3 as viewed from the front, Fig. 5 is a detailed configuration diagram of the molding and insertion dies of Fig. 3 as viewed from the rear, FIG. 7 is a view showing the surfaces of the first to fourth dice constituting the molding and insertion dies, and FIG. 7 is a view showing the surfaces of the dies for forming and inserting corresponding to the second and third sections of the die for molding and insertion according to an embodiment of the present invention 8 shows a state in which the opposite ends 12 of the sealing member 10 are closely inserted into the insertion grooves 22 of the engaging member 20 by the configuration according to the embodiment of Fig. FIG. A specific embodiment of the present invention will be described in detail with reference to Figs. 4 to 8. Fig.

In one embodiment of the present invention, the extrusion molding and inserting device 200 includes a resin supply portion, and molding and insertion dies (not shown) for molding the resin supplied from the resin supply portion into the shape of the insert member and joining the seal member 4, the die 210 for forming and inserting includes a receiving groove 201 and a resin moving groove 231. Although the receiving grooves 201 and the resin transfer grooves 231 may be formed by a single die, as shown in FIG. 3, for convenience of manufacture, a plurality of teeth series connection (in the drawing, four dice as an example) ). ≪ / RTI > In the drawing, four dice include a first dice 212, a second dice 214, a third dice 216, and a fourth dice 218, The sections are expressed as A, C, E, and G, respectively (the exact shape of which is shown in Fig. 6) and the rear section is expressed as B, D, F, Each of the dice includes a guide wall defining the receiving groove 201 and includes guide walls 242, 244 and 246 of the first to third dies 212, 214 and 216, 218 are formed with a guide wall 248 in which the receiving grooves are combined with the resin transfer grooves 231.

That is, the receiving groove 201 provides a guide path for guiding and accommodating the sealing member 10 at the upper end thereof. The receiving groove 201 may be defined by the guide wall on the inner side of the die, The center portion rises toward the rear end and the left and right ends descend so that the both ends thereof are narrowed to face each other so that the sealing member 10 is moved to the front end so as to be bulged as it goes from the unfolded state to the rear end, Can be inserted into the insertion groove 22 of the insertion member 20 formed by the resin injected along the resin transfer groove 231 with the both ends of the sealing member 10 being narrowed by being opposed to each other, .

That is, the resin-moving groove 231 is formed under the receiving groove 201 to provide a resin path corresponding to the cross-sectional shape of the engaging member 20, as a preferred example, A space defined between the outer groove 254 and the inner cavity 264 including the inner cavity 264 inserted into the outer cavity 254 and the outer cavity 254 as shown in Fig. And becomes the moving groove 231. Similarly, the resin transfer grooves 231 are defined between the upper and lower outer grooves 256 of the third die 216 and the three inner portions 268 mounted therein, And is connected to the resin moving groove 231.

In addition, the molding die 210 according to the present invention may be configured to include three different sections, the first section being a section in which only the receiving grooves 201 for guiding the closure member 10 are formed, 2 section extends in the first section and the receiving groove 201 and the resin moving groove 231 are separated from each other and the left and right ends 12 of the sealing member 10 are inserted into the insertion groove 20 of the holding member 20 The third section is continued to the second section and the guide wall 246A for guiding both the left and right ends 12 of the closure member 10 is dislocated, And both left and right ends 12 are inserted into the resin of the region where the insertion groove 22 of the engaging member 20 is formed.

Referring to the drawing, the first section is set by the first die 212, the second section is set by the second die 214 and the third die 216, Corresponds to a section set by the fourth die 218. [

The hatched portion in Fig. 7 (b) indicates the resin moving groove 231 and the receiving groove 201 at the rear end F of the third die 216, and the inner side portion 21 of the engaging member 20 And a resin moving groove 231B for forming a resin moving groove 231A and a lower outer side portion 23 which are formed on the lower surface of the receiving groove 201. The receiving groove 201 is formed on the resin moving groove 231B, The space between the resin moving grooves 231A and 231B is opened while the resin moving grooves 231A and 231B are passed over to the fourth dice 218. At the same time, The guide walls 246A and 246B forming the ends disappear so that both ends 12 of the sealing member 10 exposed from the receiving recess 201 are spaced apart from each other in the space S exposed from the resin moving grooves 231A and 231B And is attached and connected. 7 and 8, in the process of moving in the resin moving groove 231 of the third die 216, the resin which has been subjected to the sealing pressure in the closed space is moved to the fourth die 218, So that both ends 12 of the closure member 10 can be strongly held in close contact with each other.

In another embodiment of the present invention, an adhesive may be used to enhance the bonding force between both ends 12 of the sealing member 10 and the engaging member 20. For this purpose, 8 (b) after the adhesive is injected into the both end regions of the receiving groove 201 of the three dies 216.

(Not shown) between the cooling device 300 and the cutting device 400 as an alternative embodiment of injecting the adhesive so that the opposite ends of the receiving groove 201 of the third die 216 The injection nozzle of the adhesive injection device may be inserted into the region so that a constant amount of adhesive is continuously injected.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various modifications can be made by those skilled in the art. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It will not.

Claims (5)

A sealing member of a flexible material having a coating layer for elastic reinforcement and gap-blocking formed on the surface of a plate-shaped fiberglass fabric woven in a non-combustible fiberglass; And
A clamping member configured to be extruded with a synthetic resin having a flame retardant property so as to be elastically retained in a predetermined shape when there is no external force and to be fixed in a state of being inserted into the fixing groove of the door frame;
Lt; / RTI >
Wherein the insertion member has insertion grooves formed in the longitudinal direction for collecting and fixing the left and right ends of the sealing member to the right and left sides,
Wherein both ends of the sealing member are closely inserted and fixed to the insertion grooves of the engaging member so that the engaging member is divided into an inner portion surrounded by the sealing member and an outer portion exposed to the outside of the sealing member,
Wherein the outer side portions of the engaging members are each formed with a hollow in the longitudinal direction,
And a plurality of interdigitated protrusions for reinforcing a frictional force with the surface of the fixing groove of the door frame are formed on an outer surface of the outer side portion.
The method according to claim 1,
The coating layer is formed of a material highly compatible with the insert member so that the left and right ends of the seal member are integrally molded and held in the insertion groove of the insert member during the extrusion molding of the insert member Wherein the gasket is made of a material having a different material.
A sealing member feeding apparatus for providing the sealing member of claim 1;
An extrusion molding and inserting device for extruding the insert member of claim 1 and simultaneously collecting both left and right ends of a sealing member supplied from the sealing member supply device and pushing the same into the insertion groove of the insert member;
A cooling device installed at a rear end of the extrusion molding and inserting device to cool the gasket coupled with the sealing member and the engaging member by the extrusion molding and inserting device; And
A cutting device installed at a rear end of the cooling device and cutting the wire into a predetermined length;
Wherein the first and second members are bonded to each other.
The method of claim 3,
Wherein the extrusion molding and inserting device comprises a resin supply portion and molding and insertion dies for molding the resin supplied from the resin supply portion into the shape of the fitting member and bonding the sealing member,
The molding and insert dice comprise:
A receiving groove for guiding and accommodating a sealing member at an upper end thereof, the receiving groove having a central portion rising from a front end to a rear end, and left and right lowering downward so that both ends thereof are narrowed toward each other; And
A resin moving groove formed below the receiving groove and corresponding to a cross-sectional shape of the engaging member;
Wherein the material of the non-burning gasket is made of a material having a different composition.
5. The method of claim 4,
The molding and insert die
A first section having only receiving grooves for guiding the sealing member;
A second section continuing to the first section and including both the receiving grooves and the resin moving grooves separated from each other and approaching the left and right ends of the sealing member to a region where the insertion grooves of the engaging member are formed; And
A third section in which the left and right ends of the closure member are inserted into the resin in the region where the insertion groove of the insertion member is formed, the guide wall continuing to the second section and guiding both left and right ends of the closure member is disappeared;
Wherein the material of the non-burning gasket is made of a material having a different composition.

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