KR101192884B1 - Tube bending jig - Google Patents

Abstract

PURPOSE: A tube bending jig is provided to perform a bending work corresponding to various diameters of PFA(Perfluoro Alkyl) tubes without the frequent replacement of jigs because multiple bodies have different diameters. CONSTITUTION: A tube bending jig(100) comprises a disc shaped body(110), a center hole(120), and a bending unit(130). The center hope perforates the center of the body. The bending unit is formed into a shape of a half groove along an external side of the disc shaped body. The body is made by a POM(Polyoxymethylene) material so that the residues of foreign materials cannot be attached when a linear PFA tube is bent in a predetermined shape.

Description

Tube Bending Jig {TUBE BENDING JIG}

The present invention relates to a tube banding jig, and more specifically, to prevent a foreign material from adhering to the PFA tube when bending the PFA tube by applying heat to the PFA tube to change the radius of bending to a constant curve, of course, The present invention relates to a tube banding jig having a structure that can be applied to a banding operation of PFA tubes having various diameters.

In general, many types of fluids are used in industrial facilities to process or clean particular parts. The fluid may be a chemical liquid used to etch a wafer in the manufacture of a semiconductor device, or deionized water for cleaning the wafer, and sulfuric acid may be used as the chemical liquid. Such a fluid can be guided and used to a desired location using a separate tube. In this case, when the fluid flowing through the tube is a solution of a strong acid such as sulfuric acid, a perfluoro alkyl (PFA) tube is commonly used. That is, a tube made by using PFA characteristics having excellent non-adhesiveness and heat resistance is used as a fluorine resin having high mechanical strength, dimensional stability, good abrasion resistance and chemical resistance, and having the advantages of PTFE at the same time.

PFA tube is a general Teflon-based resin material, has the advantage of excellent oxidation resistance, but has a disadvantage that is not relatively flexible. Therefore, the PFA tube is banded by a separate tube banding device when banding is required due to the complicated structure of the industrial equipment.

The conventional tube banding jig used for installation in the tube banding device as described above is usually made of PTFE (Polytetra-fluoro-ethylene) or SUS (stainless steel). When the conventional tube banding jig is made of SUS material, there is a problem in that foreign matters adhere to the PFA tube when the PFA tube is bent. In addition, the conventional tube banding jig is usually limited to the PFA tube of a specific diameter as it is composed of individual pieces that form a bending portion in the outer diameter in the shape of a disc, another tube banding jig for the bending operation of the PFA tube having a different diameter There was a cumbersome problem to be used after repeated replacement in the equipped state. That is, the conventional tube banding jig can not only cause the failure of the tube during the bending of the PFA tube due to the constituent material, but also increase the additional replacement time due to frequent replacement in the bending of PFA tubes having various diameters. As a result, there was a problem of lowering work efficiency and productivity.

The present invention has been proposed to solve the above problems of the conventionally proposed method, by configuring the material of the jig used for bending the PFA tube of polyacetal (POM) material, when bending the PFA tube By preventing the stain of foreign substances generated from the jig made of the existing SUS material, and light weight and cheaper than the jig made of PTFE material, by configuring a plurality of bodies having different diameters of a plurality of bands are formed It is an object of the present invention to provide a tube banding jig, which allows a banding operation corresponding to various sizes of diameters of a PFA tube to be performed without frequent replacement of the jig, thereby improving productivity while reducing working time.

Tube bending jig according to a feature of the present invention for achieving the above object,

Disc-shaped body;

A center hole formed through the center of the body; And

It includes a bending portion formed in the form of a half groove along the outer diameter of the disc shape of the body in which the center hole is formed,

The body forming the bending portion,

It is characterized by the configuration of the polyacetal (POM) material to be prevented from smearing foreign matter when bending the straight PFA tube to the desired shape.

Preferably, the body,

In order to form the plurality of bending parts, a plurality of bodies having different diameters may be stacked in multiple stages to protrude.

More preferably, the body is

A structure in which the plurality of bodies are stacked and protruded in multiple stages may be integrated.

More preferably, the body is

Forming partitions for distinguishing the bending portion formed in each of the plurality of bodies,

The partition unit may partition the adjacent body and the body.

More preferably, the bending portion,

In a structure in which a plurality of bodies having different diameters are stacked and protruded in multiple stages, the sizes of the half grooves of the bending portions formed in the plurality of bodies may have different sizes.

More preferably, the bending portion,

In a structure in which a plurality of bodies having different diameters are stacked and protruded in multiple stages, the half grooves of the bending portions formed in the plurality of bodies may have the same size.

More preferably, the bending portion,

In a structure in which a plurality of bodies having different diameters are stacked and protruded in multiple stages, the sizes of the half grooves of the bending portions formed in the plurality of bodies are partially configured to have the same size, and some of each other It can be set as the combination structure comprised so that it may have a different size.

According to the tube banding jig proposed by the present invention, the material of the jig used for bending the PFA tube is made of polyacetal (POM) material, generated in the jig composed of the existing SUS material when bending the PFA tube It prevents dirt from adhering, and it is lighter and cheaper than a jig made of PTFE, and by constructing a plurality of bodies having different diameters in which a plurality of banding parts are formed, so that the PFA tube is not frequently replaced. The bending work corresponding to the diameters of various sizes is performed, thereby reducing productivity and improving productivity.

1 is a perspective view showing the configuration of a tube bending jig according to an embodiment of the present invention.
2 is a front and side cross-sectional view showing the configuration of the tube bending jig according to an embodiment of the present invention.
3 is a view showing the configuration of a multi-stage stacking type of tube bending jig according to an embodiment of the present invention.
4 is a front view and a side view showing the configuration of the multi-stage stacking configuration of the tube bending jig according to an embodiment of the present invention.
5 is a view showing examples of the bending structure of the tube bending jig according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . In addition, the term 'comprising' of an element means that the element may further include other elements, not to exclude other elements unless specifically stated otherwise.

1 is a view showing the configuration of the tube banding jig according to an embodiment of the present invention in a perspective view, Figure 2 is a view showing the configuration of the tube banding jig according to an embodiment of the present invention in front and side cross-sectional view. . As shown in FIG. 1 and FIG. 2, the tube bending jig 100 according to the embodiment of the present invention may include a body 110, a center hole 120, and a bending part 130. have.

Body 110 is composed of a disk configuration consisting of a body forming a tube bending jig 100 used to make a constant radius of bending when applying a heat to the PFA tube to convert a straight PFA tube into a curve Can be. The body 110 forming the bending portion 130 to be described later is composed of a polyacetal (POM) material to be prevented from staining the foreign matter when bending the straight PFA tube in a desired shape. Here, look at the properties of the polyacetal (POM) material as follows. Polyacetal has a strong durability against inorganic chemicals and oils, exhibits creep resistance over a wide temperature range, and has almost no deformation to various oils and chemicals. In addition, it maintains stable performance without fatigue even after repeated impact and continuous vibration, and has the best friction / wear resistance among thermoplastic resins. Continuous use temperature has -45 degreeC-95 degreeC, shows melting | fusing point 175 degreeC and specific gravity 1.41.

In addition, the body 110, as shown in Figures 3 and 4, a plurality of the body 110 having a different diameter diameter so that the plurality of bending portion 130 is formed in a multi-stacked protruding It may be configured in the form of a structure. At this time, the body 110 has a plurality of bodies 110 are stacked in multiple stages so that the structure of the protruding structure is formed integrally. The body 110 may form a partition 111 for distinguishing the bending portions 130 formed in the plurality of bodies 110, and the partition 111 at this time may be adjacent to the body 110 and the body. It functions to partition 110.

The center hole 120 is a configuration of a through hole formed through the center of the body 110. The center hole 120 may be used as a fastening part fixedly mounted when the tube bending jig 100 according to an embodiment of the present invention is installed in a tube banding device (not shown) for bending a PFA tube.

The bending part 130 is formed in the form of a half groove along the outer diameter of the disk shape of the body 110 in which the center hole 120 is formed. The bending portion 130 has a structure in which a plurality of bodies 110 having different diameters are stacked and protruded in multiple stages, and half of the bending portions 130 formed in each of the plurality of bodies 110. The grooves may be configured to have different sizes from each other. In addition, the bending portion 130 has a structure in which a plurality of bodies 110 having different diameters are stacked and protruded in multiple stages, and each of the bending portions 130 formed in each of the plurality of bodies 110. The half grooves may be configured to have the same size. In addition, the bending portion 130 has a structure in which a plurality of bodies 110 having different diameters are stacked and protruded in multiple stages, and each of the bending portions 130 formed in each of the plurality of bodies 110. The size of the half grooves may be configured to have some of the same size, and some of them may be of a combination configuration configured to have different sizes.

FIG. 1 illustrates a case in which the bending portion 130 of the tube bending jig 100 is configured as a single unit, and FIG. 2A illustrates the bending portion 130 of the tube bending jig 100. ) Is a front view in the case of a single configuration, Figure 2 (b) shows a side cross-sectional view when the bending portion 130 of the tube bending jig 100 is composed of a single. The tube bending jig 100 as shown in FIGS. 1 and 2 forms a single banding portion 130 used for the bending of a single diameter PFA tube. The body 110 of the tube bending jig 100 constituting such a single bending portion 130 is composed of a polyacetal (POM) material having a self-lubrication, thereby solving the problem of jig composed of a conventional SUS material This has the advantage of being lighter in weight and weight than PTFE.

3 is a view showing the configuration of a multi-stage stacking type of tube banding jig according to an embodiment of the present invention, Figure 4 is a front and side view of the configuration of a multi-stage stacking form of a tube banding jig according to an embodiment of the present invention. FIG. As shown in Figure 3 and 4, the tube bending jig 100 according to an embodiment of the present invention, in forming the body 110 from a polyacetal (POM) material, the bending portion 130 is a plurality Body 110 having a diameter of different sizes to be formed in a multi-stage stacking is configured to be integrated into a structure of the form of protruding. That is, the tube bending jig 100 composed of the plurality of bodies 110 and the plurality of bending portions 130 has a problem in which the conventional bending jig is frequently replaced in response to the diameter of the PFA tube used for the bending operation. By solving this problem, a banding operation corresponding to various sizes of PFA tubes can be performed without frequent replacement of the jig, and thus productivity can be improved while reducing the working time.

5 is a view showing an example of the structure of the bending portion of the tube bending jig according to an embodiment of the present invention. FIG. 5A illustrates a half of the bending part 130 formed in each of the plurality of bodies 110 in a structure in which a plurality of bodies 110 having different diameters are stacked and protruded in multiple stages. The grooves are configured to have different sizes from each other. That is, the bending portions 130 formed in the tube bending jig 100 illustrated in FIG. 5A have a shape in which the size of the half grooves formed along the outer diameter of the disc shape of the body 110 gradually increases (a < It consists of b <c <d <e) and can be applied to PFA tubes having various sizes of diameters, so that the bending operation can be performed without frequent replacement of jigs.

5B illustrates a half of the bending part 130 formed in each of the plurality of bodies 110 in a structure in which a plurality of bodies 110 having different diameters are stacked and protruded in multiple stages. The grooves are configured to have the same size. That is, the bending portions 130 formed in the tube bending jig 100 illustrated in FIG. 5A have the same size of the half grooves formed along the outer diameter of the disc shape of the body 110 (a = a =). a = a = a), and is easy to change the angle of curvature to be curved for PFA tubes having the same diameter.

FIG. 5C illustrates a half of the bending part 130 formed in each of the plurality of bodies 110 in a structure in which a plurality of bodies 110 having different diameters are stacked and protruded in multiple stages. Some of the grooves are configured to have the same size, and some of the grooves are configured in a combination configuration configured to have different sizes. The bending portions 130 formed in the tube bending jig 100 illustrated in FIG. 5C are a combination configuration in which the configurations of FIGS. 5A and 5B are mixed. That is, the bending portions 130 may be configured in such a way that the size of the half grooves is equal to some, and gradually increases, such as (a = a <b <c <d). The mixed tube banding jig 100 is highly applicable to PFA tubes having various sizes of diameters and PFA tubes having the same diameters, and has the advantage of reducing frequent replacement of jigs and curves for PFA tubes. There is an advantage of improving the variety of bending work, such as the change of the bending angle of the bending band to change.

The present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics of the invention.

100: tube banding jig 110: body
111: compartment 120: center hole
130: banding part

Claims (7)

Disc-shaped body 110;
A center hole 120 formed through the center of the body 110; And
It includes a bending portion 130 is formed in the form of a half groove along the outer diameter of the disk shape of the body 110, the center hole 120 is formed,
The body 110 forming the bending portion 130,
Consists of a polyacetal (POM) material to prevent the stain of foreign matters when bending the straight PFA tube to the desired shape,
The body 110,
In order to form the plurality of bending portions 130, a plurality of bodies 110 having different diameters are formed in a multi-stage stacking structure to protrude,
The body 110,
A partition 111 is formed to distinguish the bending portions 130 formed in the plurality of bodies 110, respectively.
The partitioning part (111), the tube bending jig, characterized in that partitioning the adjacent body (110) and the body (110).
delete The method of claim 1, wherein the body 110,
Tube bending jig, characterized in that the structure of the plurality of the body 110 is laminated in multiple stages is formed in a unitary structure.
delete The method of claim 1, wherein the bending portion 130,
In the structure in which the plurality of bodies 110 having different diameters are stacked and protruded in multiple stages, the sizes of the half grooves of the bending portions 130 formed in the plurality of bodies 110 are different from each other. A tube banding jig, characterized in that configured to have a size.
The method of claim 1, wherein the bending portion 130,
In a structure in which the plurality of bodies 110 having different diameters are stacked and protruded in multiple stages, the sizes of the half grooves of the bending portions 130 formed in the plurality of bodies 110 are the same. Tube bending jig, characterized in that configured to have.
The method of claim 1, wherein the bending portion 130,
In the structure in which the plurality of bodies 110 having different diameters are stacked and protruded in multiple stages, the size of the half groove of the bending part 130 formed in each of the plurality of bodies 110 may be partially. A tube banding jig, characterized in that it is configured to have the same size, and a portion is a combination configuration configured to have a different size from each other.

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