KR102608896B1 - Needling bonding type protection against heat sheet - Google Patents

Abstract

The present invention relates to a non-flammable fabric; A heat insulating material disposed on the lower surface or both the upper and lower surfaces of the incombustible fabric; and a holding means for mutually bonding to the heat insulating material using a portion of the incombustible fabric, thereby enabling the incombustible fabric forming the heat dissipating sheet and the heat insulating material to be easily bonded to each other using a needling method. It relates to a heat dissipation sheet of a needling joint type with a heat dissipation material.

Description

Needling bonded heat dissipation sheet of incombustible fabric and heat insulator {NEEDLING BONDING TYPE PROTECTION AGAINST HEAT SHEET}

The present invention relates to a needling type heat dissipation sheet of a non-combustible fabric and a heat dissipation material, which allows the incombustible fabric and heat dissipation material to be easily bonded to each other to form a heat dissipation sheet by just needling without using bonding methods such as adhesives or ultrasonic fusion. .

Heat insulating material is a general term for all materials used to suppress the movement of heat as much as possible, and heat dissipation sheet refers to a fabric sheet made of heat dissipating material to block heat as described above.

At this time, the materials of the heat insulating material that make up the heat dissipation sheet are largely divided into organic and inorganic materials. Organic materials include cork, cotton, felt, carbonized cork, and foam rubber, while inorganic materials include asbestos, glass wool, and quartz wool. ·There are diatomaceous earth, magnesium carbonate powder, magnesia powder, calcium silicate, perlite, etc.

Technologies related to such heat dissipation sheets or devices for manufacturing them include:

Republic of Korea Patent Publication No. 10-2015-0029252 (published on March 18, 2015, hereinafter referred to as ‘Document 1’) presents ‘Perforated insulation sheet using mineral wool suitable for foamable resin and its manufacturing method’,

Document 1 is a mineral wool fabric; A flame retardant adhesive layer laminated on one side of the mineral wool fabric; And aluminum foil adhered to the flame retardant adhesive layer; and an insulating sheet made of a flame retardant coating layer surrounding the aluminum foil and having a plurality of perforated holes, and the manufacturing method thereof includes a first supply step of providing mineral wool while a fabric sheet roller wrapped with mineral wool rotates. ; A flame retardant adhesive application step of applying a flame retardant adhesive to one side of the mineral wool; A second supply step of providing aluminum foil; A flame retardant coating step of applying a flame retardant coating to one side of the aluminum foil; An adhesion step in which the mineral wool coated with a flame retardant adhesive and the aluminum foil coated with a flame retardant coating are pressure bonded; A cooling step in which the laminated insulation sheets pass through an air-cooled cooling roll after the adhesion step; A drilling step of forming a plurality of holes in the laminated insulation sheets; A needling process step of laminating the laminated insulation sheets and the foamable resin substrate; and a pressing step of pressing the laminated insulation sheets and the foamable resin substrate after the needling process step, thereby using mineral wool with excellent insulation properties. This technology relates to a perforated insulation sheet and its manufacturing method, which increases incombustibility by laminating with aluminum foil and includes a perforation process to prevent the dome phenomenon from occurring due to gas or air generated during the insulation sheet manufacturing process.

As another technology, Republic of Korea Patent Publication No. 10-2022-0093535 (published on July 5, 2022, hereinafter referred to as ‘Document 2’) ‘Composite fiber sheet with blocking function’ is proposed,

Document 2 is characterized in that it is composed of a fiber body portion including a carbon fiber that provides a non-combustible function at the bottom, forming an upper surface of the carbon fiber, and a non-combustible felt joined to the carbon fiber by a needle felt method, When applied to a heater jacket for piping, a channel forming sheet made of carbon fiber and incombustible felt is folded in the width direction on one side of the fiber body, and the overlapping end portions of both sides are sewn together along the length of the fiber body to form an internal interior. A hot wire insertion channel part can be configured to allow a hot wire to be inserted into the electric blanket, and when applied to an electric blanket, it is made of a PET film with an adhesive layer formed on the lower surface, and an aluminum layer coated on the upper surface of the PET film to provide an electromagnetic wave blocking function, It is configured to further include a silver sheet portion that is attached to the upper surface of the fiber main portion and shields electromagnetic waves generated from the electric blanket heating wire from being emitted to the upper part of the fiber main portion, and is applied to an electric heating product equipped with a heating wire to prevent fire caused by overheating of the heating wire. This is a technology related to composite fiber sheets that have a fire suppression function that can block the spread of flame and suppress the spread of fire.

Document 1. Republic of Korea Patent Publication No. 10-2015-0029252 (published on March 18, 2015) Document 2. Republic of Korea Patent Publication No. 10-2022-0093535 (published on July 5, 2022)

The present invention provides a needling-bonded heat dissipation sheet of a non-combustible fabric and a heat insulator, which allows the incombustible fabric and a heat insulator to be easily bonded to each other using a needling bonding method, so that it can be used as a heat dissipation sheet that can cover fire-risk items. The purpose is to provide.

Furthermore, the present invention implements a structure that holds and fixes the part of the non-combustible fabric forming the joint area so that it does not come out together when a part of the non-combustible fabric formed by the needle comes out after completion of bonding during needling bonding, so that the interaction between the non-combustible fabric and the heat insulating material is implemented. The purpose is to provide a heat dissipation sheet of the needling joint type of incombustible fabric and heat dissipation material that improves adhesion.

In order to solve the above-mentioned problems, a heat dissipation sheet of a needling bonded type of incombustible fabric and a heat dissipation material according to the present invention,

non-flammable fabric;

A heat insulating material disposed on the lower surface or both the upper and lower surfaces of the incombustible fabric; and

Holding means for bonding a portion of the incombustible fabric to the heat insulating material;

It is characterized by including.

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The heat dissipation sheet of the needling joint type of incombustible fabric and heat dissipation material according to the present invention,

The biggest effect is that it allows the non-combustible fabric and heat dissipation material that forms the heat dissipation sheet to be easily bonded to each other only by needling, without using bonding methods such as adhesives or ultrasonic fusion.

In addition, the heat dissipation sheet constructed by bonding and fixing each other in this way can be used to surround and protect fire-risk items (e.g., battery shells for electric vehicles, etc.), which has the effect of greatly reducing damage caused by fire.

1 is a plan view showing a heat dissipation sheet of a needling joint type of a non-combustible fabric and a heat dissipation material according to the present invention;
Figure 2 is a cross-sectional view taken along line AA' of Figure 1;
Figure 3 is a plan view showing an apparatus for manufacturing a heat dissipation sheet of the needling type of incombustible fabric and heat dissipation material according to the present invention;
Figure 4 is a side configuration diagram of Figure 3;
Figure 5 is a partial side configuration diagram showing the needling unit,
Figure 6 is a front configuration view of Figure 3;
Figure 7 is a partial front configuration diagram showing the feeding unit and needling unit;
Figure 8 is a partial side cross-sectional diagram showing the snap unit;
9 is a partial plan view showing the snap unit;
Figure 10 is a partial plan configuration diagram showing the operation process of the snap unit;
Figure 11 is a cross-sectional configuration diagram showing another example of a heat dissipation sheet.

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

Prior to this, the terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle of definability. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, so various equivalents that can replace them at the time of filing the present application It should be understood that variations and variations may exist.

Based on Figure 3, among each base block of the base unit, the side of the base block located above is designated as left or left, and the side of the base block located below is designated as right or right, and 3 is specified as As a standard, the direction of the feeding roller member located on the left of the three feeding roller members is designated as the front or front, and the side of the feeding roller member located on the right is designated as the rear or rear.

As shown in Figures 1 and 2, the heat dissipation sheet (S) of the needling joint type of the incombustible fabric and the heat dissipation material according to the present invention is,

It largely consists of a non-combustible fabric (1), a heat insulator (2), and a holding means (3).

Looking at each configuration,

The non-flammable fabric (1) is

As shown in Figures 1 and 2,

It is mainly made of silica sand, limestone, and borax, and is made of non-flammable glass fiber, which dissipates heat quickly and is composed of inorganic materials, so it can be used in areas exposed to fire risk. It has a rectangular structure with a certain thickness.

The heat insulating material (2) is

As shown in Figures 1 and 2,

Being disposed on the lower surface of the incombustible fabric 1,

It is a square plate structure made by stretching aluminum very thinly, and is made of aluminum foil that has excellent corrosion resistance and is harmless to the human body, so it is used as packaging material and insulation material.

At this time, it is preferable that the heat insulating material 2 has a size corresponding to the incombustible fabric 1, so that it can cover the entire lower surface of the incombustible fabric 1.

The holding means (3) is

As shown in Figures 1 and 2,

It is intended to be bonded to the heat insulating material (2) using a part of the incombustible fabric (1),

A plurality of needle holes (3a) arranged in a grid shape and penetrating upward and downward in the heat dissipating material (2),

A plurality of holding fillers (3b) in which a part of the incombustible fabric (1) is inserted in such a way that it occupies each needle hole (3a), and

A plurality of holding heads (3c) extending from each holding pillar (3b) and arranged to hang along the surrounding area of each needle hole (3a)

It is made including.

As a result, as shown in FIG. 2, a needle hole 3a is formed in the heat insulator 2 as the needle 31 of the manufacturing device to be described later is performed, and at the same time, the incombustible fabric 1 is formed through this. A portion is pulled down and filled to form a holding pillar 3b, and a portion of the incombustible fabric 1 coming out of the needle hole 3a is formed into a holding head 3c having a roughly oval-shaped bundle structure, using adhesive or ultrasonic waves. The incombustible fabric 1 and the heat insulating material 2 can be easily bonded and fixed to each other only by needling without using a bonding method such as fusion.

In addition, as shown in FIG. 2, the incombustible fabric 1 and the heat insulating material 2 located on its lower surface are mutually bonded and fixed by primary needling through the needle 31 of the manufacturing device to be described later. After further placing the heat insulator (2) on the upper surface of the fabric (1), flipping it upside down and then performing secondary needling through the needle (31) of the manufacturing device to be described later, not only the lower surface but also the upper surface of the incombustible fabric (1) Interconnection and fixation with the heat insulating material 2 located in can be achieved. At this time, during the second needling, it is desirable to adjust the left and right positions of the needle 31, the left and right positions of the heat dissipation sheet (S), or the entry point of the heat dissipation sheet (S) so that they do not overlap with the first needling point.

The heat dissipation sheet (S) constructed by bonding and fixing each other in this way can greatly reduce damage from fire by surrounding and protecting fire-risk items (e.g., battery shells for electric vehicles, etc.).

Meanwhile, as shown in FIGS. 3 to 10, the apparatus for manufacturing a heat dissipation sheet of the needling type of a non-combustible fabric and a heat dissipation material according to the present invention,

It largely consists of a base unit (10), a feeding unit (20), and a needling unit (30).

Looking at each configuration,

The base unit 10 is

As shown in Figures 3 and 4,

A pair of base blocks (11) arranged at regular intervals on the left and right, and

A plurality of supports (12) connected to the end of each base block (11) and erected in contact with the ground.

It is made including.

At this time, although not shown, each of the base blocks 11 is preferably connected to each other through a separate horizontal bar, etc., and a separate wheel or height adjuster may be further provided at the bottom of each support 12.

The feeding unit 20 is

As shown in Figures 3 and 4,

It is installed on the base unit 10 and is used to transport the incombustible fabric 1 and the heat dissipation sheet S on which the heat dissipation material 2 is disposed on its lower side,

A plurality of feeding roller members 21 disposed between each base block 11 of the base unit 10 and arranged in a row back and forth, and

A feeding drive unit (22) that transmits rotational power to some or all of the feeding roller members (21).

It is made including.

At this time, as shown in FIGS. 3 and 4, each feeding roller member 21 has a shaft 211 whose both ends are rotatably coupled to each base block 11, and is fixed along the longitudinal direction of the shaft 211. It consists of a plurality of feeding rollers 212 that are axially coupled at intervals.

Here, two or more circular rubber rings 213 for slip prevention are provided on the outer peripheral surface of each feeding roller 212 to help ensure that the heat dissipation sheet (S) is fed at a constant speed without slipping. It will be given.

And, as shown in FIGS. 3 and 4, three feeding roller members 21 are arranged front and rear, and the number may increase further depending on the length of the heat dissipation sheet S to be manufactured. In addition, when feeding the heat dissipation sheet (S), it is desirable to arrange them at appropriate intervals so that the heat dissipation sheet (S) can be fed at a constant speed without stopping. Therefore, it is obvious that the structure of the feeding drive unit 22 can be changed and modified depending on the quantity or arrangement spacing of each feeding roller member 21.

The feeding drive unit 22 includes a pair of driven sprockets 221 axially coupled to the right end of the shaft 211 of the two feeding roller members 21 located at the front and rear of each feeding roller member 21. , a feeding drive motor 223 installed on the base block 11 located on the right side of each base block 11 of the base unit 10 and having a drive sprocket 222, each of the driven sprockets 221 and the It consists of a feeding chain 224 that interconnects the driving sprocket 222.

Ultimately, when the driving sprocket 222 is driven by the feeding drive motor 223, the two feeding roller members 21 located at the front and rear are rotated by the feeding chain 224, thereby causing the heat dissipation sheet (S) seated thereto to rotate. ) is fed. At this time, one feeding roller member (21) disposed between the two feeding roller members (21) located at the forefront and rearmost is freely rotated by contact with the heat dissipation sheet (S) being fed, thereby preventing the heat dissipation sheet (S) from sagging. This helps to ensure stable transport while preventing damage.

The needling unit 30 is

As shown in Figures 3 to 8,

For bonding the incombustible fabric (1) and the heat dissipation material (2) forming the heat dissipation sheet (S) to each other,

A plurality of needles (31) disposed on the upper side in a shape crossing the heat dissipation sheet (S) transported by the feeding unit (20),

A lifting block (32) supporting each needle (31),

Elevating means (33) for elevating the elevating block (32) up and down, and

A guide block (34) disposed on the lower side in a form crossing the heat dissipation sheet (S) and having a plurality of guide holes (341) corresponding upward and downward to each needle (31).

It is made including.

At this time, as shown in Figure 5, each needle 31 of the needling unit 30 is formed with two or more barbs 311 that are radially arranged and point downward, and among each barb 311 When the barb 311 located on the left is viewed from the side, it forms an approximate '∠' shape, and the barb 311 located on the right forms a shape opposite to the left barb 311.

The shape of each barb 311 allows it to move downward while pulling a portion of the incombustible fabric 1 when the needle 31 is lowered, and conversely, when the needle 31 rises, it can easily come out without interference. Therefore, part of the non-combustible fabric 1 can be left intact and exit upward.

And as shown in Figures 5 to 7, the lifting means 33 includes a tunnel-shaped support 331 erected upward while being interconnected with each base block 11 of the base unit 10, and the lifting block ( A piston 332 connected to 32) and a pneumatic cylinder body 333 in which the piston 332 is built-in, lifts and lowers the piston 332 by selective supply of air, and is fixed to the support 331. It comes true.

At this time, the lifting means 33 includes a pair of circular pillar parts 334 connected to both ends of the upper side of the lifting block 32, and a pair of circular pillar parts 334 surrounding a part of each pillar part 334 and attached to the support body 331. A pair of fixedly installed brackets 335 are further provided, so that when the piston 332 is raised and lowered by the pneumatic cylinder body 333, each of the pillar parts 334 is also raised and lowered according to the guidance of each bracket 335. As a result, the lifting block 32 can perform a lifting operation while stably maintaining a horizontal state.

Therefore, as shown in FIG. 8, when each lifting block 32 is lowered by the lifting means 33 of the needling unit 30, a portion of the incombustible fabric 1 is pulled down by each needle 31. Each needle hole (3a) is formed, and each needle hole (3a) is filled and hung along the surrounding area of each needle hole (3a) to form each holding pillar (3b) and each holding head (3c), The incombustible fabric 1 and the heat dissipation material 2 that make up the heat dissipation sheet S are easily bonded to each other by needling rather than adhesive or ultrasonic fusion methods.

Meanwhile, the apparatus for manufacturing a heat dissipation sheet of a needling bonded type of a non-combustible fabric and a heat dissipation material according to the present invention further includes a snap unit 40.

The snap unit 40 is

As shown in Figures 8 to 10,

During needling bonding between the incombustible fabric 1 and the heat insulator 2 using a needle 31, when the needle 31 comes out after the bonding is completed, the holding filler 3b and the holding head 3c are formed. This is to prevent parts of the fabric (1) from coming out together,

A pair of sliding holes 41 passing forward and backward within the guide block 34 of the needling unit 30 and connected to each guide hole 341,

A pair of sliders 42 inserted into each sliding hole 41, and

Advance/retract means (43) for advancing each slider (42) in a direction facing each other.

It is made including.

At this time, as shown in FIG. 9, arc-shaped snap heads 421 that are recessed in opposite directions are formed at opposite ends of each slider 42, and the snap heads 421 are formed at the opposite ends of each slider 42. It is desirable to have a curvature corresponding to or slightly greater than that of the needle hole (3a) of the means (3).

In addition, the pair of sliders 42 can be provided individually, and the advance/retract means 43 can also be provided individually accordingly. Preferably, the slider 42 is disposed at the front as shown in FIG. 9. They are connected to each other, and the sliders 42 arranged at the rear are also connected to each other, and the forward and backward sliders 42 can be made to slide in the direction facing each other and in the opposite direction at the same time through the advance and retreat means 43.

As shown in FIG. 8, the advance/retract means 43 includes an advance/retract piston 431 disposed before and after the guide block 34 of the needling unit 30 and connected to sliders 42 disposed at the front and rear, It consists of a forward and backward pneumatic cylinder body 432 in which the forward and backward piston 431 is built and which causes the forward and backward piston 431 to advance and retreat by selective supply of air.

Here, supports 422 of a step structure that are bent downward and then horizontally bent outward are formed at the outer ends of the sliders 42 located at the front and rear, and each sliding hole 41 has the support 422. A space 411 that guides movement is further formed.

As a result, as shown in [A] of FIG. 10, each needle hole 3a, each holding pillar 3b, and each holding head 3c are formed by each needle 31 of the needling unit 30. at

As shown in [B] of FIG. 10, when each slider 42 advances in the direction facing each other by the advance/retract means 43, the connection portion between the holding pillar 3b and the holding head 3c is held. fixed,

As shown in [C] of FIG. 10, when each needle 31 is raised by the elevating means 33 of the needling unit 30 and moves away from the upper side of the heat dissipation sheet S, the advancing and retracting means 43 Each slider 42 returns to its original position.

Therefore, the shape of the holding pillar 3b and the holding head 3c can be maintained during needling bonding, so that mutual bonding between the incombustible fabric 1 and the heat insulator 2 can be stably achieved.

In the above description of the present invention, the "needling joint heat dissipation sheet of incombustible fabric and heat dissipation material" having a specific shape and structure has been described with reference to the accompanying drawings. However, the present invention can be modified and modified in various ways by those skilled in the art. , such modifications and changes should be construed as falling within the protection scope of the present invention.

S: Heat dissipation sheet
1: Non-combustible fabric
2: Heat insulator
3: Holding means
3a: Needle hole
3b: Holding pillar
3c: holding head
10: Base unit
11: Base block
12: support
20: Feeding unit
21: Feeding roller member
211: shaft
212: Feeding roller
213: rubber ring
22: Eastern part of Feeding District
221: driven sprocket
222: Drive sprocket
223: Feeding drive motor
224: Feeding chain
30: Needling unit
31: Needle
311: barb
32: Elevating block
33: lifting means
331: support
332: Piston
333: Pneumatic cylinder body
334: pillar part
335: bracket
34: Guide block
341: Guide hole
40: Snap unit
41: sliding hole
411: space part
42: slider
421: Snaphead
422: Support
43: means of advancement and retreat
431: Advance/retract piston
432: Forward and backward pneumatic cylinder body

Claims (7)

Non-flammable fabric (1);
A heat insulating material (2) disposed on the lower surface or both the upper and lower surfaces of the incombustible fabric (1); and
Holding means (3) for bonding a portion of the incombustible fabric (1) to the heat insulating material (2);
Including,
The holding means (3) has a plurality of needle holes (3a) arranged in a grid shape in the heat insulating material (2) and formed to penetrate upward and downward, and a portion of the incombustible fabric (1) forms each needle hole (3a). It consists of a plurality of holding pillars (3b) inserted in an occupied form, and a plurality of holding heads (3c) extending from each holding pillar (3b) and arranged to hang along the surrounding area of each needle hole (3a). A heat dissipation sheet featuring a needling bond of incombustible fabric and heat dissipation material. delete delete delete delete delete delete

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