KR101806610B1 - Cast structure - Google Patents

Abstract

The present invention relates to a Gibbs structure, and more particularly, to a Gibbs structure which includes a contact member 110 which is made of a flat plate and which is used by being cut in a circular shape so as to abut one end in the longitudinal direction and is in contact with the skin, A cast member 120 formed in a cylindrical shape and in which an insertion hole 121 into which the contact member 110 is inserted is formed and a contact member 110 formed on the contact member 110 and the cast member 120, And an engaging part 123 for engaging the engaging part 120 and the cast member 120. [
The present invention is easy to perform Gibbs treatment, can prevent the itching of the affected part and skin rejection reaction by smooth air circulation after the Gibbs treatment, and can be replaced with consumable because of easy detachment and attachment, .

Description

Gibbs structure {CAST STRUCTURE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a Gibbs structure, and more particularly, to a Gibbs structure that fixes a fractured portion such as a spinal column, a dislocation and the like.

Gibbs fixes the fractured lesion, such as sprains and dislocations, with a gypsum cast to prevent deformation and restore the lesion.

However, when the gypsum is cured in accordance with the initial lesion, it can be exposed to high temperatures and burns, which is bulky and heavy, which makes it difficult to digest everyday life. In addition, it is difficult to maintain hygiene and cleanliness because it is not ventilated and is vulnerable to moisture.

As a result, when a long-time plaster cast is worn, it causes itching, and there is a fear of skin damage and bacterial infection. In severe cases, a nerve vessel is pressed to a cast of gypsum, causing a variety of inconveniences.

Recently, in order to improve the disadvantages of plaster casts, a stockin is wound around the affected part, a cotton bandage is wrapped on the wound, and a plaster bandage or a cast tape is cast thereon, The patient is undergoing a Gibbs procedure to cure the wound so that the affected part does not move.

However, in the above-described method, since a cotton bandage, a plaster cast, or a hydrocast casting tape is wound on the starch net, air circulation with the outside is not smooth, and it is not only itchy and frustrating due to sweat generated in the affected part, There is a fear of infection, and there is a problem that skin damage of the affected part occurs for a long period of time.

In addition, there is a problem in that the Gibbs procedure using a conventional gypsum cast, a hydro-gypsic casting bandage or a hydro-casting casting tape is difficult to be replaced once.

Korean Patent Laid-Open Publication No. 2012-0026261 (name: Gibbs surgical skin protection and manufacturing method thereof, public date: March 19, 2012)

It is an object of the present invention to provide a Gibbs structure which is easy to perform a Gibbs procedure, can be easily detached and attached after a Gibbs procedure, can be replaced with consumable, air circulates smoothly, prevents itching and skin rejection, .

According to an aspect of the present invention for achieving the above object, the present invention provides a contact member, which is made in a flat plate shape, is used in a circular shape in which one end in the longitudinal direction is in contact with the other end, A cast member formed in a cylindrical shape of a filament material so as to surround and fix the outer diameter of the contact member and having an insertion hole into which the contact member is inserted; And an engaging portion formed on the contact member and the cast member to engage the contact member and the cast member, and the engraved engaging portion, wherein the engraved engaging portion is an engaging slot provided in the insert hole of the cast member Wherein the engaging portion is an engaging projection provided on the outer diameter of the contact member and inserted and guided in the engaging slot, and the engaging projection is a plurality of engaging holes formed around the outer diameter of the engaging member, And the hemispheres formed at one end and the other end in the longitudinal direction are formed in contact with each other when the contact member is formed into a flat shape through the process.

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Wherein the engaging projection is a plurality of cylinders that are elongated in the longitudinal direction on the outer diameter of the contact member, and one of the cylinders is formed into a flat plate shape through the laminating process, The two semicircular cylinders formed in the respective recesses can be formed to abut against each other.

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And a lock slot formed at one end of the engaging slot so as to be inserted into the lock slot while the engaging protrusion is inserted into the engaging slot so that the state where the engaging member is inserted into the casting member is fixed .
The cast member may be formed of an elastic material so that the cast member may be easily detached, a plurality of vent holes may be formed around the outer diameter of the cast member, a mesh structure may be formed, Wherein the casting member is formed with hooking hooks on both ends of the casting member forming hooks and hooking hooks hooked on the hooking hooks so as to be able to shield the opening portions, It is possible to form the notch portion with a long length or to hinge so as to smooth the opening of the opening portion.
The contact member comprises a fabric layer made of a fabric material and having a thickness of 0.2 mm to 0.7 mm which is in contact with the skin, and a polypropylene film formed of a filament material through a lamination process of a 3D printer on the fabric layer, A filament layer formed with a ventilation hole or a mesh structure and a relief coupling portion formed through a lamination process of a 3D printer on the filament layer and formed of a filament material and engaged with the cast member.

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The present invention relates to a cast member having a ventilation hole or a mesh structure and a contact member to which a fabric and a filament are applied to form a cast structure to increase the flexibility of the cast member and the contact member. There is an effect that securing fixing force is secured.

In addition, the present invention can prevent the itching of the affected part due to smooth air circulation due to the ventilation hole or the mesh structure, and the skin rejection reaction can be prevented because the portion contacting the affected part is a fabric material, It is effective.

In addition, the present invention is characterized in that the open portion of the cast member is formed in an open shape, so that the inner contact member or the cast member can be easily replaced after the casting process, thereby improving hygiene and cleanliness.

In addition, since the present invention is manufactured using a 3D printer, the degree of freedom of the shape is high, so that it is possible to produce a body-customized body and a personalized body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a contact member with a cast structure of a first embodiment of the present invention. FIG.
2 is a cast member showing a cast member of the first embodiment of the present invention.
3 is a view showing a method of joining a contact member and a cast member with a Gibbs structure according to the first embodiment of the present invention.
4 is a view showing filament layer mesh structures (a) and (b) of the first embodiment of the present invention and a mesh structure (c) for comparison thereof.
5 is a view showing a method of manufacturing a contact member using a 3D printer according to a first embodiment of the present invention.
6 is a view showing a contact member with a Gibbs structure according to a second embodiment of the present invention.
7 is a cast member showing a cast member according to a second embodiment of the present invention.
8 is a view showing a method of joining a contact member and a cast member with a Gibbs structure according to a second embodiment of the present invention.
9 is a view showing a cast member according to a third embodiment of the present invention.
10 is a view showing a cast member according to a fourth embodiment of the present invention.

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

The Gibbs structure of the first embodiment of the present invention includes a contact member 110 and a cast member 120, as shown in Figs.

The contact member 110 is a member that contacts the ring portion to protect the ring portion, and the cast member 120 is a member that is engaged with the contact member 110 to fix the ring portion so as not to move.

The contact member 110 and the cast member 120 are made of a 3D printer. 3D printers have a high degree of freedom of shape, so they can be customized and customized.

The contact member 110 is formed in a flat plate shape and is used in a circular shape so that one end of the contact member 110 is in contact with the other end in the longitudinal direction and is coupled to the post-cast member 120. The shape of the contact member 110 is easy to replace at the time of contamination and is easy to be attached to the cast member 120.

1, the contact member 110 includes a fabric layer 111 that is in contact with the skin, a fibrous layer 111 that is formed through a process of laminating a 3D printer on the fabric layer 111, And an embossed engaging portion 117 formed on the filament layer 113 by a 3D printer laminating process and for engaging with the cast member 120.

The fabric layer 111 is in contact with the skin as a part for protecting the lesion.

The fabric layer 111 may be made of a fabric material such as cotton fabric, polyethylene (PE) fabric, cotton nonwoven fabric, polyethylen (PE) nonwoven fabric. The fabric material is soft to the touch of the skin and hardly rejects the skin, so it is suitable for protecting the affected part.

In the present embodiment, it is most preferable that the fabric layer 111 is made of a surface nonwoven fabric.

Cotton non-woven fabric has excellent biocompatibility, excellent absorbency, and good touch. Also, when the filament layer 113 is formed on the fabric layer 111 through the lamination process of the 3D printer due to the strong heat, the fabric layer 111 is not melted and fused to the filament layer 113, (111) and the filament layer (113).

The polyethylene fabric is excellent in biocompatibility and is used for medical purposes, but its surface is smooth and it can not melt well with the filament layer 113 without an adhesive. Thus, when a polyethylene fabric is applied to the fabric layer 111, it can be attached to the filament layer 113 using an adhesive.

Polyethylene nonwoven fabric is widely used for medical applications because of its hydrophobic characteristics, but when it is manufactured by 3D printer, melting by nozzle temperature may occur and surface finish may be lowered.

In the case of cotton fabrics, it adheres to the filament layer (113), but separates well.

The filament layer 113 is attached to the upper portion of the fabric layer 111 to maintain the shape of the contact member 110 and to impart ventilation and flexibility.

When the contact member 110 is formed only of the fabric layer 111 and the embossed engaging portion 117 without the filament layer 113, the contact member 110 becomes more flexible when the contact member 110 is formed into a circular shape, However, there is a problem that the adhesive force between the fabric layer 111 and the embossed engaging portion 117 is lowered.

The filament layer 113 has a plurality of ventilation holes or is attached to the fabric layer 111 with a mesh structure to provide air permeability and flexibility so that air circulation is smooth and the contact member 110 closely contacts And it can be stretched flexibly in accordance with the movement of the wearer while having a predetermined elasticity, thereby securing an excellent wearing feeling. In addition, the filament layer 113 has a predetermined elasticity and restoring force and can be tightly coupled to the cast member 120.

The filament layer 113 may be made of a filament material such as ABS, PLA, HIPS, POM, WOOD and NYLON. In this embodiment, the filament layer 113 is most widely used, and ABS and PLA having a low unit price can be used.

PLA has a melting point as low as 180 ~ 230 ℃ and it is solid, and when it hardens, it does not have heat shrinkage and it is made of eco-friendly material. ABS has a melting point of 210 ~ 260 ° C which is higher than PLA and it is difficult to precise molding due to heat shrinkage, so an external temperature holding device such as a heat bed is needed. In the case of this embodiment, since it is not precise molding, a heat bed is not required.

For flexibility, ASB is more flexible than PLA, PLA is superior for elasticity and restoring force, and ABS or PLA can be used. Of course, you can mix the two materials.

The filament layer 113 may be formed with a plurality of ventilation holes 115 or a mesh structure to enhance ventilation and flexibility.

In the case of the mesh structure, various shapes may be employed to enhance the air permeability. However, in order to enhance both the breathability and the flexibility, the mesh structure of FIGS. 4 (a) and 4 (b) is preferable. In the case of the mesh structure shown in Fig. 4 (c), since it is difficult to expand and contract in the left and right direction in comparison with Fig. 1 in which there is no ventilation hole or mesh structure, there is little effect of increasing flexibility.

The thickness of the filament layer 113 may be 0.2 mm to 0.7 mm, preferably 0.2 mm to 0.5 mm. The flexibility of the filament layer 113 is improved when the ventilation hole 115 or the mesh structure is applied to the filament layer 113 so that the filament layer 113 can easily be coupled to the cast member 120 to a thickness of 0.2 to 0.7 mm, Or mesh structure is not applied, flexibility is relatively low compared to the former, and it is suitable to fabricate in the range of thickness of 0.2 mm to 0.5 mm.

When the ventilation holes 113 are formed in the filament layer 113 or the ventilation holes are formed in a mesh structure to secure air permeability, the weight of the contact member 110 can be lowered and the user can feel light and comfortable.

Further, when the filament layer 113 has a plurality of ventilation holes 115 or a mesh structure, the flexibility of the filament layer 113 is increased, so that the filament layer 113 can be easily coupled to the cast member 120, and the adhesion strength after bonding is also excellent.

The embossed engaging portion 117 is for firmly fixing the state in which the contact member and the cast member are engaged. The embossed engaging portion 117 is engaged with the engraved engaging portion 123 of the cast member to be described later.

The restoring force of the abutting member 110 maintains the abutment of the abutment member 110 and the casting member 120 in the absence of the embossed engaging portion 117 and the engraved engaging portion 123, The contact member 110 and the cast member 120 can be easily separated when attaching and detaching. Therefore, in order to prevent such a problem, the embossed engaging portion 117 and the engraved engaging portion 123 are provided.

A plurality of embossed engaging portions 117 are formed on the filament layer 113 at predetermined intervals. The embossed engaging portion 117 may be formed into a cylindrical shape or a semi-cylindrical shape. In this embodiment, the embossed engagement portion 117 is formed in a semicylindrical shape at one end in the longitudinal direction and at the other end, and a cylindrical shape is formed in the remaining portion.

The embossed engaging portion 117 is formed of a plurality of cylinders which are formed long in the longitudinal direction on the outer diameter of the contact member 110 when the contact member 110 is circular. One of the cylinders is formed by abutting two semicircular cylinders formed at one end and one end in the longitudinal direction of the contact member 110 in a circular shape.

Two contact members 110 formed on one end and one end of the contact member 110 are in contact with each other to form a cylinder, and when the cylinder is engaged with the engaging portion 123, the contact member 110 contacts the cast member 120 And is stably fixed.

The embossed engaging portion 117 is formed of the same filament material as the filament layer 113. Since the embossed engaging portion 117 may be difficult to attach due to the characteristics of the shape, it is formed of the same material as the filament layer 113 so as to increase adhesion with the filament layer 113 and to securely engage with the cast member 120.

Since the contact member 110 is fabricated through a lamination process of a fabric material and a filament material of different material, it can be referred to as a fabric hybrid product.

The cast member 120 serves to prevent deformation of the affected part by covering and fixing the outer diameter of the contact member 110. [

The cast member 120 is formed into a cylindrical shape so that the contact member 110 can be formed into a circular shape and coupled to the inside. Alternatively, the cast member 120 may be formed in a cylindrical shape, and may have a predetermined curvature so that the body can be customized.

The cast member 120 is formed with an insertion hole 121 into which the contact member 110 is inserted. The size of the insertion hole preferably corresponds to the outer diameter of the contact member 110.

The cast member 120 is made of a filament material using a 3D printer. As the filament material, ABS and PLA can be used in the same manner as the filament layer 113 and the embossed engagement portion 117 of the contact member 110. [

Alternatively, the cast member 120 may be made of a filament material selected from among ABS, PLA, HIPS, POM, WOOD and NYLON. Unlike the filament layer 113 of the contact member 110, the cast member 120 is made of a single material, so that it is not necessary to consider the adhesion between the different materials. Accordingly, various types of filament materials having a predetermined elastic restoring force and flexibility can be used.

The engaging portion is formed in the insertion hole 121 of the cast member 120. [ The engraved engaging portion 123 has a shape corresponding to the shape of the embossed engaging portion 117 of the contact member 110 and is formed long in the longitudinal direction. Specifically, the engraved engaging portion 123 is an engaging slot provided in the insertion hole 121 of the cast member 120.

The cast member 120 may have a plurality of vent holes 125 formed around the outer diameter thereof or may have a mesh structure. The vent hole 125 or mesh structure formed in the cast member 120 further enhances air permeability and increases flexibility to facilitate bonding with the contact member 110. In this embodiment, a vent hole is formed in the cast member 120.

The cast member 120 may be formed of an elastic material so as to be easily detachable from the affected part and may be formed with an opening 127 having a long lengthwise incision.

The elasticity of the cast member 120 can be exerted due to the characteristics of the material of ABS and PLA. The open portion 127 can be closed when the external force is not applied and the ring portion can be fixed and the cast member 120 can be separated from the ring portion only when an external force acts.

As shown in FIG. 5, in the manufacturing method of the above-described Gibbs structure, the contact member 110 is manufactured through a process of stacking a 3D printer on the upper surface of a fabric material.

The contact member 110 is inserted into a feeder 7 driven by a rotary motor 5 and a thermoplastic solid filament material 113a such as a thin wire wound like a thin wire on the upper surface of a fabric material 111a is fed through the extruder 9 It is automatically sprayed to the nozzle 11 and piled up by layers.

Specifically, the fabric material 111a is fixed on the bed, and the bed 3, on which the fabric material 111a is fixed, is mounted on the 3D printer 1. Next, when the gap between the existing nozzle 11 and the bed 3 is set to zero point on the Z axis, an error occurs when the fabric material 111a is fixed on the bed 3. Therefore, The point adjustment sensor gives an error (about 0 ~ 1mm) according to the fabric material.

Next, the filament layer 113 and the embossed engaging portion 117 are formed on the upper surface of the fabric material 111a by operating the 3D printer 1 using a pre-designed modeling file.

The gap between the nozzle 11 and the bed 3 during 3D printing affects the adhesion between the fabric material 111a and the filament material 113a and the surface finish.

In the case of a polyethylene fabric, it is preferable that an adhesive is used and the distance between the nozzle 11 and the bed 3 is 0.3 mm or more and less than 0.5 mm.

In the case of the polyethylene fabric, if the distance between the nozzle 11 and the bed 3 is less than 0.3 mm, the polyethylene fabric is melted by the temperature of the nozzle for injecting the filament material into the molten state, and if it is 0.5 mm or more, There is a problem that fusion with the fabric and the filament material is difficult or the surface finish is poor.

In the case of the surface nonwoven fabric, the distance between the nozzle 11 and the bed 3 is preferably 0.5 mm or more and 1.0 mm or less.

If the distance between the nozzle 11 and the bed 3 is less than 0.5 mm, the surface of the nonwoven fabric is laminated while the surface is complicated. If the distance between the nozzle 11 and the bed 3 is more than 1.0 mm, the nonwoven fabric and the filament material 113a, There is a problem in that it is separated.

Although not shown, the cast member 120 is also manufactured using the 3D printer 1. Unlike the contact member 110, the cast member 120 is made of a single filament. The embossed engaging portion 117 of the abutting member 110 is formed in the insertion hole 121 in a cylindrical shape so that an insertion hole 121 corresponding to the outer diameter of the contact member 110 is formed by using a 3D printer. And an engaging portion 123 corresponding to the engaging portion 123 is formed.

The cast member 120 is formed with a plurality of ventilation holes 125 around the outer diameter thereof or a mesh structure.

Hereinafter, the operation of the first embodiment of the present invention will be described.

A method of combining a Gibbs structure and performing treatment on a lesion will be described.

3 (a), after the abutting member 110 is rounded so that the embossed engaging portion 117 is located at the outer diameter, the embossed engaging portion 117 of the abutting member 110 is pressed against the cast member (123) provided in the insertion hole (121) of the body (120).

At this time, the embossed engaging portion 117 is formed by three cylinders that are elongated in the longitudinal direction on the outer diameter of the contact member 110, and one of the cylinders has one end in the longitudinal direction and the other end Two semicircular cylinders each formed are in contact with each other.

When the contact member 110 is inserted into the insertion hole 121 of the cast member 120 in this state, the engaging portion 117 of the contact member 110 is moved along the engaging portion 123 in the insertion hole 121 Is inserted while being guided.

Then, as shown in Fig. 3 (b), the engagement of the contact member 110 and the cast member 120 is completed.

At this time, due to the mesh structure formed on at least one of the contact member 110 and the cast member 120, the contact member 110 is brought into close contact with the cast member 120 while being smoothly coupled. As the engaging portion 117 is engaged with the engaging portion 123, the engagement between the contact member 110 and the cast member 120 is firm and the engagement between the contact member 110 and the cast member 120 is strong. Phenomena such as development, idling, and the like do not occur.

At this time, the end of the engraved engaging portion 123 corresponding to the opposite direction in which the embossed engaging portion 117 is inserted into the engraved engaging portion 123 is closed, so that the embossed engaging portion 117 can be fixedly inserted .

The above-mentioned Gibbs structure can be applied to the affected part in such a manner that the fabric layer 111 of the contact member 110 comes into contact with the affected part and then the cast member 120 is fitted thereon.

Since the casting member 100 formed in the annular portion is formed with the open portion 127 cut in the cast member 120, when the open portion 127 is held by hand and spreads on both sides, Since the inner contact member 110 can be easily removed, detachment and attachment can be easily performed and replaced after the casting process.

The contact member 110 may be formed of a fabric material 111a and a filament layer 113 having a mesh structure or having a ventilation hole 115. The ventilation hole 125 may be formed in the cast member 120, Structure or the like is applied, the air circulation is smooth, and the itching of the affected part and the skin rejection reaction can be prevented.

Hereinafter, a second embodiment of the present invention will be described.

As shown in FIGS. 6 to 8, the Gibbs structure 200 of the second embodiment of the present invention has a structure in which a contact member 210 having a spherical embossed engaging portion 217 and an embossed engaging portion 217 are combined And a cast member 220 having an engraved engaging portion 223 formed thereon.

The Gibbs structure 200 of the second embodiment differs from the first embodiment in the shape of the engraved engaging portion 217 formed on the contact member 210 and the engraved engaging portion 223 formed on the cast member 220 .

In the second embodiment, the description of the configuration which is the same as that in the first embodiment will be omitted, and only the differences will be described.

The engraved engaging portion 223 is an engaging slot 223a provided in the insertion hole 221 of the cast member 220. The engraved engaging portion 217 is provided at an outer diameter of the contact member 210, As shown in FIG.

The engaging protrusion 217a is a plurality of spheres formed around the outer diameter of the contact member 210. One of the spheres is formed into a flat shape by a laminating process, Two hemispheres each formed at the other end are formed to abut against each other.

The spheres formed by abutting two hemispheres are inserted into the engaging slots 223a so that the abutting member 210 is kept in a circular state. The spheres are formed in the same number as the number of the coupling slots 223a.

The engraved engaging portion 223 is formed in an "L" shape. Specifically, the engraved engaging portion 223 includes a locking slot 223b which is vertically bent at one end of the engaging slot 223a and the engaging slot 223a, and a spherical engaging protrusion 217a is engaged with the engaging slot 223a The state where the contact member 210 is inserted into the lock member 223b and the contact member 210 is inserted into the cast member 220 can be fixed.

As shown in FIG. 8, the cast structure 200 of the second embodiment is formed such that the fabric layer 211 of the contact member 210 comes into contact with the ring part, and then the cast member 220 is fitted thereon, And then fixed on the affected part.

The casting structure 200 of the second embodiment includes the ventilation hole 215 in the contact member 210 or the filament layer 213 in the mesh structure and the ventilation hole 225 is formed in the casting member 220. [ Or a mesh structure or the like is applied, air circulation is smooth, and the itching of the affected part and skin rejection reaction can be prevented.

Hereinafter, a third embodiment of the present invention will be described.

The cast member 320 of the third embodiment of the present invention differs from the cast member 320 as shown in Fig. The third embodiment can be used in combination with the contact members 110 and 210 of the first and second embodiments.

The cast member 320 is formed with an opening portion 327 having a shape elongated in the longitudinal direction so as to facilitate detachment. At both ends of the cast member 320 forming the opening portion 327, a hooking hook 328 and a hooking hook 329 hooked to the hooking hook 328 are formed. The opening portion 327 can shield the opening portion 327 by fastening the hooking hook 328 and the hooking hook 329 to each other.

The cast member 320 is formed with a notch 331 along the longitudinal direction at a position opposite to the opening 327. [ The notch portion 331 is provided to smooth the opening of the opening portion 327.

Hereinafter, a fourth embodiment of the present invention will be described.

The cast member 420 of the fourth embodiment of the present invention differs from the cast member 420 as shown in Fig. The fourth embodiment can be used in combination with the contact members 110 and 210 of the first and second embodiments.

The cast member 420 is formed with an opening portion 427 having a shape elongated in the longitudinal direction so as to facilitate detachment. At both ends of the cast member 420 forming the opening 427, a hooking hook 428 and a hooking hook 429 hooked to the hooking hook 428 are formed. The opening portion 427 can shield the opening portion 427 by engaging the hooking hook 428 and the hooking hook 429 with each other.

The cast member 420 is hinged at a position opposite to the opening 427 to form a hinge portion 431 for facilitating the opening of the opening portion 427.

In the following, the adhesion between the fabric layer and the filament layer was tested in order to select a suitable fabric material and a filament material when the connecting member was manufactured by the 3D printing lamination method. It is to be understood that the following experiment is for illustrative purposes only and that the present invention is not limited by the following examples.

The fabric was made of polyethylene woven fabric, polyethylene nonwoven fabric, cotton fabric, cotton nonwoven fabric. The filament material was PLA and ABS.

30 mm width and 78.5 mm length, and the filament layer thickness was 0.2 mm, 0.5 mm, 0.7 mm, and 1.0 mm, respectively.

The criteria for material selection were based on the degree of adhesion between the filament and the fabric and the degree of flexibility to be rolled into the cast member.

<Experiment 1>

Test subjects: Polyethylene fabric and PLA, Polyethylene fabric and ABS

Experimental conditions: interval between nozzle and bed (N / B): 0.5 mm,

Experimental Results: The polyethylene fabric was very smooth on the surface and was not fused with PLA or ABS without adhesive. So the polyethylene fabric was fixed on the bed and the adhesive was applied to melt the polyethylene fabric with PLA or ABS.

(N / B) between the nozzle and the bed.

When the gap (N / B) between the nozzle and the bed was 0.5 mm and PLA or ABS was laminated on the polyethylene fabric, the surface finish was lowered. And when the ABS was laminated, there was no abnormality on the lower surface of the polyethylene fabric, but the fabric melted on the upper surface, causing damage. It is confirmed that ABS having melting point higher than PLA melted polyethylene fabric and fused and damaged.

When the gap (N / B) between the nozzle and the bed is 0.3 mm and the PLA or ABS is laminated on the polyethylene fabric, the surface finish is improved compared with the case where the interval (N / B) between the nozzle and the bed is 0.5 mm . ABS was well welded to the polyethylene fabric and PLA was well welded to the polyethylene fabric.

<Experiment 2>

Test subjects: polyethylene nonwoven fabric, PLA, polyethylene nonwoven fabric and ABS

Experimental conditions: Distance between nozzle and bed (N / B): around 1.0mm

Experimental Result: Polyethylene nonwoven fabric is used for medical purposes because of its hydrophobic character, but it is very weak to heat.

When the gap between the nozzle and the bed (N / B) is near, the polyethylene nonwoven fabric melts.

In Experiment 2, there was a difference between PLA and ABS.

The polyethylene nonwoven fabric showed a poor surface finish as a whole. In the case of PLA, the surface finish is lowered, but the polyethylene nonwoven fabric is well welded, and ABS is also poor in surface finish. Since ABS has a higher melting point than PLA, it is confirmed that polyethylene nonwoven fabric is melted to maintain the shape of polyethylene nonwoven fabric.

When the distance between the nozzle and the bed (N / B) was 1.0 mm or less, the polyethylene nonwoven fabric was melted by the temperature of the nozzle.

<Experiment 3>

Experimental subjects: cotton fabric and PLA, cotton fabric and ABS

Experimental conditions: interval between nozzle and bed (N / B): 0.5 mm, 0.3 mm

EXPERIMENTAL RESULTS: Cotton fabrics are characterized by heat. Unlike polyethylene, no melting phenomenon occurred. In the course of the experiment, the result was influenced by the elasticity of the fabric of the cotton fabric, and the difference between the nozzle and bed (N / B) results.

The surface finish was very good at a gap (N / B) of 0.5 mm between the nozzle and the bed. However, there was a problem that separation was easy due to poor fusion between PLA or ABS and cotton fabric. There was no large change in the lower surface due to the heat-resistant characteristics of the surface, and printer errors occurred due to the characteristics of the shrinkage varying depending on the texture of the surface.

Between nozzle and bed (N / B) 0.3mm, fusion was better than nozzle / bed (N / B) 0.5mm. However, separation between the cotton fabric and the PLA or ABS was easy to use as a contact member.

<Experiment 4>

Test subjects: cotton nonwoven, PLA, cotton nonwoven and ABS

Experimental conditions: Distance between nozzle and bed (N / B): 0.5mm, around 1.0mm

Experimental Results: Cotton nonwoven fabric was not heat - resistant and did not dissolve, and there was a difference according to the interval (N / B) between the nozzle and the bed.

It was confirmed that the PLA or ABS was well adhered on the surface nonwoven fabric at the gap (N / B) 0.5 mm between the nozzle and the bed, so that the adhesion was very good.

Experiments were carried out with increasing the gap (N / B) between the nozzle and the bed to improve the surface finish. The adhesion of PLA or ABS on the surface nonwoven fabric was slightly less than N / B 0.5 mm, indicating a slight decrease in adhesion, but it was suitable for use as a contact member.

Table 1 below summarizes the experimental results.

division
Polyethylene if textile
N / B: 0.3 mm Non-woven
N / B: 1.0 mm textile
N / B: 0.3 mm Non-woven
N / B: 1.0 mm PLA Good adhesion
Surface completeness normal Good adhesion
Surface completeness bad Adhesion bad
Surface completeness good Good adhesion
Surface completeness good ABS Adhesive strength normal
Surface completeness good Good adhesion
Surface completeness bad Adhesion bad
Surface completeness good Good adhesion
Surface completeness good

According to the experimental results, polyethylene fabric and cotton nonwoven fabric are suitable as fabric material, and the most suitable material is cotton nonwoven fabric.

Although not shown, the degree of flexibility is greatest in the thickness of the filament layer of 0.2 mm to 0.5 mm in terms of the degree of flexibility, and thus it is very suitable to be disposed inside the cast member in a circular shape.

The material of the filament layer was ABS more flexible than PLA and PLA more dominant in elasticity.

According to the experimental results, the fabric layer is formed as a nonwoven fabric and the filament layer is made of PLA or ABS material. When the thickness of the filament layer is 0.2 to 0.5 mm (when the mesh structure is not employed) (N / B) between the nozzle and the bed is set to be not less than 0.5 mm and not more than 1.0 mm, which is preferable in terms of ensuring flexibility, surface finish, securing of adhesion, etc. .

The scope of the present invention is not limited to the embodiments described above, but may be defined by the scope of the claims, and those skilled in the art may make various modifications and alterations within the scope of the claims It is self-evident.

100: Gibbs structure 110: contact member
111: fabric layer 113: filament layer
115: ventilation hole 117: embossed engaging portion
117a: Coupling protrusion 120: Cast member
121: insertion hole 123: engraved engaging portion
123a: coupling slot 125: vent hole
127: opening portion 111a: fabric material
113a: filament material 1: 3D printer
3: Bed 5: Rotary motor
7: feeder 9: extruder
11: Nozzle 200: Gibbs structure
210: contact member 211: fabric layer
213: filament layer 215: ventilation hole
217: embossed engaging portion 217a: engaging projection
220: cast member 221: insertion hole
223: engraved engaging portion 223a: engaging slot
223b: lock slot 225: vent hole
227: opening part 320, 420: cast member
327, 427: opening portion 328, 428:
329, 429: hook hook 331:
431:

Claims (14)

A contact member which is made in a flat plate shape and which is used by being rolled in a circular shape so that one end in the longitudinal direction abuts against the other end,
A cast member formed in a cylindrical shape of a filament material so as to surround and fix the outer diameter of the contact member and having an insertion hole into which the contact member is inserted; And
An engaging portion formed on the contact member and the cast member to engage the contact member and the cast member, and an engraved engaging portion,
Wherein the engraved engaging portion is an engaging slot provided in the insertion hole of the cast member,
Wherein the engaging portion is an engaging projection provided on the outer diameter of the contact member and inserted and guided in the engaging slot,
Wherein the engaging projection has a plurality of spherical portions formed around an outer diameter of the contact member,
Wherein one of the spheres is formed by abutting two hemispheres each formed at one end and the other end in the longitudinal direction of the contact member, which is formed in a plate shape through a lamination process, in a circular shape. delete The method according to claim 1,
Wherein the engaging projection is a plurality of cylinders extending in the longitudinal direction on an outer diameter of the contact member,
Wherein one of the cylinders is formed by contacting two semicircular cylinders formed at one end and one end in the longitudinal direction of the contact member formed in a plate shape through the lamination process in a circular shape. delete The method according to claim 1,
A lock slot is provided at one end of the coupling slot,
Wherein the engaging protrusion is inserted into the lock slot while being rotated while being inserted into the engaging slot, and the state where the engaging member is inserted into the casting member is fixed. The method according to claim 1,
The cast member is formed of an elastic material so that it can be easily attached and detached. The cast member is formed with a plurality of vent holes around the outer diameter, or formed with a mesh structure,
Wherein the opening portion is formed with hooking hooks and hooking hooks that are hooked to the hooking hooks at both ends of the casting member forming the opening portion,
Wherein the cast member is formed with a notch portion in a longitudinal direction at a position facing the opening portion, or is hinged to facilitate the opening of the opening portion. delete delete delete The method according to claim 1,
The contact member comprises a fabric layer made of a fabric material and having a thickness of 0.2 mm to 0.7 mm in contact with the skin,
A filament layer formed in the upper part of the fabric layer through a lamination process of a 3D printer and having a plurality of ventilation holes or a mesh structure so as to have a ventilation property and a flexibility,
And a relief engaging portion formed on the upper portion of the filament layer through a lamination process of the 3D printer and made of a filament material for engaging with the cast member. delete delete delete delete

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