KR101418320B1 - Heat treatment furnance enable to protect object - Google Patents

Abstract

The present invention provides a furnace comprising: a furnace body having an inner space; A drive unit rotatably installed on the body and configured to support the object in the internal space to advance the object; And a rolling contact unit installed on the furnace body so as to be positioned on the upper side of the drive unit and configured so that the object is in rolling contact with the object when proceeding toward the furnace body, A rolling member disposed so as to be able to contact with the roller; And an installation member rotatably supporting the rolling member and coupled to the furnace body, wherein the installation member comprises: an upper rod and a lower rod; A shaft having both ends connected to the upper rod and the lower rod and to which the rolling member is installed; And a retaining pin provided on a portion exposed through the lower rod at a lower end of the shaft, the shaft including: a head; And a shank extending from the head to a width smaller than the head, wherein the upper rod, the lower rod, and the rolling member each include a connection hole through which the shank passes, .

Description

{HEAT TREATMENT FURNANCE ENABLE TO PROTECT OBJECT}

The present invention relates to a heat treatment furnace for performing heat treatment on an object.

In general, a heat treatment is an operation for modifying the properties of a material at an appropriate speed by operating operations such as heating and cooling, and is used for a material in which the type or composition of a phase is changed by temperature .

As one type of heat treatment, brazing is a type of brazing, and is a bonding method in which only a non-ferrous metal having a melting point lower than that of the base material to be bonded or its alloy (brazing material) is used as a filler, to be.

In the case of such brazing, objects such as metal pipes and pipes are heated while advancing along the longitudinal direction of the object in the heat treatment furnace. At this time, since the pipe moves forward and left while bumping against the inner wall of the heat treatment furnace, the surface of the pipe may be damaged. Even if the heat treatment is completed, the damaged pipe is treated as defective, resulting in inefficiency of the heat treatment process.

An object of the present invention is to provide a object-protecting heat treatment furnace which can eliminate or reduce the possibility that an object hits an inner wall of a heat treatment furnace to damage the surface of the object.

According to an aspect of the present invention, there is provided an object-protecting heat treatment furnace including a furnace body having an inner space; A drive unit rotatably installed on the body and configured to support the object in the internal space to advance the object; And a rolling contact unit installed on the furnace body so as to be positioned on the upper side of the drive unit, the rolling contact unit being formed so that the object moves in a direction toward the furnace body and is in rolling contact with the object during the forward movement.

Here, the internal space may include a heating chamber formed to heat air by a heat source, and a processing chamber positioned above the heating chamber and formed so that the object is thermally affected by the heated air, May include a drive roller disposed across the process chamber.

The rolling contact unit may include a rolling member rotatably installed on the furnace body so as to be positioned at a height corresponding to the height of the object in the processing chamber.

Here, the rolling member may include a roller formed to rotate about one central axis, or a ball formed to rotate without a central axis.

Here, the center axis of rotation of the rolling member may be arranged to be perpendicular to the center axis of rotation of the driving roller.

Here, the rolling member may be formed of a ceramic or a graphite material.

The rolling contact unit may further include an installation member which is located in the treatment chamber and has a mounting portion to which the rolling member is mounted, and an engaging portion that extends from the mounting portion and is coupled to the furnace body.

Here, the mounting member may include an upper rod and a lower rod having the mounting portion and the engaging portion, respectively, and spaced from each other along a height direction of the furnace body; And a shaft having both ends connected to the upper rod and the lower rod and to which the rolling member is installed.

Wherein the shaft includes a head and a shank extending in a width less than the head at the head, the upper rod and the lower rod, and the rolling member each have a connection hole through which the shank passes, The mounting member may further include an engaging pin which is provided at a portion exposed through the connecting hole of the lower rod of the shaft.

The mounting member may further include a connection bar located at the mounting portion, one end connected to the upper rod, and the other end connected to the lower rod.

The upper rod or the lower rod may further include an enlarged portion located at the mounting portion and protruding from an outer surface of the upper rod or the body of the lower rod.

Here, a recess portion is formed in a portion of the upper rod or the lower rod exposed to the outside of the furnace body, and the mounting member is coupled to an outer surface of the furnace body and has a passing portion through which the exposed portion passes A first coupling member for coupling to the first coupling member; And a second coupling member coupled to the first coupling member and having a locking protrusion inserted into the recess portion to be engaged with the upper rod or the lower rod.

The mounting member may further include a cushioning member installed on the upper rod and the lower rod for cushioning an impact caused by collision of the object with the rolling member.

Wherein the upper rod and the lower rod each have a first portion located adjacent to the shaft and a second portion located farther from the shaft than the first portion and having a hollow portion for receiving the first portion, And the buffering member may include a spring in which the first portion is fitted and both ends are respectively supported by the first portion and the second portion.

Here, the first portion may further include a protrusion protruding from a part of the outer surface of the hollow portion, and the second portion may further include a restriction portion formed such that the first portion is engaged with the protrusion .

According to the object-protecting heat treatment furnace constructed as above, even if the object moves forward and backward while moving by the drive unit in the inner space having a high temperature of the furnace body and moves toward the inner wall of the furnace body, It is possible to eliminate or reduce the possibility of damaging the surface of the object because the object comes in rolling contact with the rolling contact unit without coming into contact with the inner wall of the body.

This makes it possible to eliminate or reduce the surface defects of the object due to contact with the inner wall of the furnace body.

1 is a longitudinal sectional view of an object-protecting heat treating furnace 100 according to an embodiment of the present invention.
Fig. 2 is an enlarged sectional view of the rolling contact unit 150 of Fig. 1; Fig.
3 is an exploded perspective view of the rolling member 151 and the shaft 158 of Fig.
4 is a perspective view of upper rod 156 of Fig.
5 is an enlarged cross-sectional view of a portion A of FIG. 2;
FIG. 6 is a perspective view of a mounting portion 154 'according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an object protection type heat treatment furnace according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations.

1 is a longitudinal sectional view of an object-protecting heat treating furnace 100 according to an embodiment of the present invention.

Referring to FIG. 1, the object-protecting heat treatment furnace 100 may include a furnace body 110, a drive unit 130, and a rolling contact unit 150.

The body 110 may be in the form of a hollow body having a generally rectangular cross-section. A heating chamber 111 and a process chamber 112 may be formed in the hollow portion (internal space) of the body 110. [ The heating chamber 111 may be located below the processing chamber 112. In the heating chamber 111, for example, a gas burner 113 may be provided as a heat source. In the process chamber 112, heat generated by the gas burner 113 is received through the air and the object O to be heat-treated is placed. The object O may be a metal pipe or pipe. A lid 115 is provided on the ceiling of the process chamber 112. The operator can enter the treatment chamber 112 through the cover 115 and repair or inspect the components installed inside the treatment chamber 112. [

The driving unit 130 is installed on the furnace body 110 to support the object O and drive it forward. Specifically, the driving unit 130 may include a driving roller 131 that is rotatably installed. The driving roller 131 is disposed across the processing chamber 112 and its rotational center axis 131a can be arranged parallel to the bottom surface of the furnace body 110. [

The rolling contact unit 150 is installed on the furnace body 110 so as to be positioned on the upper side of the drive unit 130. The rolling contact unit 150 is configured to make rolling contact with the object O when the object O advances toward the body 110 while being advanced in the processing chamber 112. [ To this end, the rolling contact unit 150 is positioned to correspond to the height of the object O. The rolling contact unit 150 is a rolling member 151 formed to rotate with respect to the rolling axis 151a, and may include, for example, a roller. At this time, the rolling axis 151a of the rolling member 151 may be arranged substantially perpendicular to the rotational axis 131a of the driving roller 131. [ Alternatively, the rolling member 151 may be a ball that is rotatable in any direction without a central axis. The rolling member 151 may be formed of a ceramic or grapevine material. According to this material, the rolling member 151 can withstand the high temperature in the treatment chamber 112, for example, 500 to 900 占 폚.

According to the above-described heat treatment furnace 100, since gas is supplied to the gas burner 113, combustion takes place in the heating chamber 111. Thereby, the air in the heating chamber 111 is heated and the heated air is raised to the processing chamber 112. Thereby, the high-temperature atmosphere is formed in the processing chamber 112, and heat treatment for the object O becomes possible.

In this heat treatment atmosphere, the object O can be advanced and continuously heat-treated. To this end, the drive unit 130 for driving the object O forward is actuated. By the operation of the drive unit 130, the drive roller 131 is rotated in the direction for advancing the object O. Thereby, the object O advances along its longitudinal direction.

The object (O) can be sideways as it moves forward. In this case, the object O, specifically, the objects O close to the inner wall of the furnace body 110 can move toward the inner wall of the furnace body 110. At this time, the object O comes into contact with the rolling contact unit 150, specifically the rolling member 151, before it hits the inner wall. The object O is still urged to advance in the advancing direction by the drive unit 130 and the rolling member 151 makes a rolling contact with the object O. [ Thereby, the object O is subjected to a force for advancing in the forward direction without being damaged, such as scratching, from the rolling member 151. This provides the advantage that the object O can be structurally resolved or compensated for being damaged by lateral flow.

The specific configuration of the rolling contact unit 150 will be described with reference to Fig.

Fig. 2 is an enlarged sectional view of the rolling contact unit 150 of Fig. 1; Fig.

Referring to this figure, the rolling contact unit 150 may include an installation member 153, in addition to the rolling member 151 described above.

As in the present embodiment, the rolling member 151 may be applicable to all objects O having different diameters if the roller is extended to have a predetermined length along the height direction of the furnace body 110. If the ball described above is used as the rolling member 151, it is also possible to provide a plurality of balls in the height direction so as to correspond to the object O of various diameters.

The mounting member 153 may include a mounting portion 154 and an engaging portion 155 depending on the area in which the mounting member 153 is located. The mounting portion 154 is located in the process chamber 112 and is a portion where the rolling member 151 is mounted. The engaging portion 155 extends from the mounting portion 154 and is joined to the furnace body 110.

The mounting member 153 may include an upper rod 156, a lower rod 157, a shaft 158, an engagement pin 159, and a connecting bar 160 in terms of structure.

The upper rod 156 and the lower rod 157 are arranged apart from each other along the height direction of the furnace body 110. Further, the upper rod 156 and the lower rod 157 may be arranged parallel to each other. The upper portion of the upper rod 156 and the lower portion of the lower rod 157 are connected to each other by a mounting portion 154. The portion of the lower portion of the lower rod 157 (155). ≪ / RTI > A through space 117 may be formed in the furnace body 110 to allow the engaging portion 155 to pass through the furnace body 110. The penetrating space 117 may be formed to have two diameters, and the corresponding enlarged portion 156c (FIG. 4) will be described with reference to FIG. The portion (A) of the engaging portion 155 that fixes the portion exposed outside the furnace body 110 will be described in detail with reference to FIG.

Referring again to Fig. 2, the shaft 158 is a rod whose both ends are connected to the mounting portion 154 side of the upper rod 156 and the lower rod 157, respectively. The shaft 158 is provided with a rolling member 151. At this time, the rolling member 151 is rotatably installed with respect to the shaft 158, or the rolling member 151 is fixedly installed with respect to the shaft 158, but the shaft 158 is fixed to the upper rod 156 and the lower rod 156 157, respectively.

The engaging pin 159 is provided at the exposed portion penetrating the lower rod 157 of the shaft 158 so that the shaft 158 is not separated from the lower rod 157.

The connecting bar 160 is a member that is located in the mounting portion 154 and connects the upper rod 156 and the lower rod 157. [ The connecting bar 160 enhances the structural strength of the mounting member 153 so that they are not structurally interfered with the rolling member 151 by deformation of the upper rod 156 or the lower rod 157.

Next, the rolling member 151 and the shaft 158 will be described in more detail with reference to Fig.

3 is an exploded perspective view of the rolling member 151 and the shaft 158 of Fig.

Referring to the drawing, the rolling member 151 is a hollow cylindrical member, and may have a connection hole 151a, which is an inner hollow portion. The rolling member 151 may be formed of a ceramic material as described above. In this case, the Vickers hardness of the rolling member 151 may be 1600-1700. This hardness is set in consideration of the impact of the rolling member 151 caused by the collision with the object O. [

The shaft 158 may include a head 158a, a shank 158b, and a locking hole 158c. The head 158a is formed at one end of the shank 158b and is formed to have a larger cross-sectional area or diameter than the shank 158b. A locking hole 158c is formed in an end side region of the shank 158b opposite to the head 158a. The latching hole 158c is formed in such a size that the latching pin 159 of FIG. 2 can be inserted. Such a shaft 158 can be made of stainless steel, for example SUS 310S.

Next, the upper rod 156 will be described with reference to Fig. At this time, the lower rod 157 is substantially the same as the upper rod 156, and the specific configuration of the upper rod 156 can be directly applied to the lower rod 157.

4 is a perspective view of upper rod 156 of Fig.

Referring to this figure, the upper rod 156 may be formed in a plate-like shape having a width larger than the thickness.

A connection hole 156a may be formed at one end of the upper rod 156 and a recess 156b may be formed at both sides of the other end in the width direction. An enlarged portion 156c may be formed between the connection hole 156a and the recess portion 156b, specifically, closer to the connection hole 156a. The enlarged portion 156c may be a rectangular ring protruding from the outer surface of the body of the upper rod 156 and enclosing the body of the upper rod 156 in the circumferential direction.

Here, the connection hole 156a has a size that allows the shank 158b of the shaft 158 to pass therethrough and the head 158a (Fig. 3) to pass.

Referring to Fig. 5, the recess portion 156b is a portion where the latching projection 164 (see Fig. 5) of the second coupling member 163 is located.

2, the enlarged portion 156c is a portion of the passage body 117 of the furnace body 110 which is caught by the end of the large diameter portion (the jaw 118). To this end, the upper rod 156 must be inserted in a direction toward the processing chamber 112 from outside the furnace body 110. The lower rod 157 is also inserted in the same direction. At this time, the connecting bar 160 is connected to the upper rod 156 and the lower rod 157, respectively, after they are inserted to connect them.

With this configuration, the shaft 158 can be inserted into the connection hole 156a so that the shaft 158 can be easily rotated on the upper rod 156 and the lower rod 157.

An enlarged portion 156c is formed so that the upper rod 156 and the lower rod 157 are installed on the roving body 110 such that the upper rod 156 and the lower rod 157 are engaged with the ridges 118 of the through- 156 and the lower rod 157 can not advance toward the inside of the process chamber 112 beyond the position set by the jaws 118 and the enlarged portion 156c. Further, the filling material is filled in the through space 117, so that the upper rod 156 and the lower rod 157 can not advance to the outside of the processing chamber 112 by the filler and the enlarging portion 156c, .

The recessed portion 156b prevents the upper rod 156 and the lower rod 157 from proceeding in either the inward direction or the outward direction of the process chamber 112 in cooperation with the engagement projection 164 .

Next, a structure for fixing the upper rod 156 and the lower rod 157 to the outer surface of the furnace body 110 will be described with reference to Fig. Hereinafter, only the upper rod 156 will be described with reference to the lower rod 157, but the same contents may be applied to the lower rod 157 as well.

5 is an enlarged cross-sectional view of a portion A of FIG. 2;

Referring to this figure, as described above, a recess portion 156b is formed at a portion of the upper rod 156 exposed to the outside of the furnace body 110. [ The recess portion 156b may be formed on both end sides of the upper rod 156 in the width direction.

The first coupling member 161 and the second coupling member 163 are coupled to the outer wall of the furnace body 110 corresponding to the upper rod 156. [ The first coupling member 161 is coupled to the outer surface of the furnace body 110 and is formed with an opening portion 162 through which the upper rod 156 passes. The second coupling member 163 is coupled to the first coupling member 161 and is provided with a locking protrusion 164 that is fitted in the recessed portion 156b. In order to fix the first coupling member 161 and the second coupling member 163 to the furnace body 110, a coupling screw 165 extending through the furnace body 110 to the furnace body 110 is provided.

According to this configuration, the first coupling body 161 is disposed on the furnace body 110 while allowing the upper rod 156 to pass through the passing portion 162. The second coupling body 163 may be placed on the first coupling body 161 and the first coupling body 161 and the second coupling body 163 may be coupled to the furnace body 110 as the coupling screw 165.

At this time, the latching protrusion 164 of the second coupling member 163 is fitted in the recess 156b of the upper rod 156. The upper rod 156 is less likely to move to the left or right in the drawing along the extending direction of the upper rod 156 due to the engagement action between the latching protrusion 164 and the recess portion 156b . Thereby, there is a high possibility that the rolling member 151 (Fig. 2) installed in the upper rod 156 (and the lower rod 157) is held in place.

Next, another type of mounting portion 154 'will be described with reference to Fig.

6 is a perspective view of a mounting portion 154 'in accordance with an alternative embodiment of the present invention.

Referring to this figure, the mounting portion 154 'is substantially similar to the previous embodiment, but is provided with a buffer member 171 for buffering impact applied to the rolling member 151 by the object O (FIG. 2) . As the buffer member, a spring may be employed as illustrated in this figure.

To this end, the mounting portion 154 'may have an upper rod 156' and a lower rod 157 ', and a connecting bar 160 connecting them, similar to the previous embodiment. Here, the upper rod 156 'and the lower rod 157' are formed to have the first portions 156'a and 157'a and the second portions 156'b and 157'b, respectively. Hereinafter, the upper rod 156 'and the lower rod 157' have the same configuration, and only the upper rod 156 'will be described.

A portion of the first portion 156'a is received in the hollow portion of the second portion 156'b. To this end, the second portion 156'b has a hollow portion with an open cross-section facing the first portion 156'a. The buffer member 171 is fitted in a part of the first part 156'a so that both ends of the buffer part 171 are supported by the other part of the first part 156'a and the second part 156'b.

 At this time, in order to prevent the first portion 156'a from separating from the hollow portion of the second portion 156'b, a protrusion 156'c is formed at the end of the first portion 156'a, A restriction portion 156'd may be formed at an inlet portion of the hollow portion of the second portion 156'b.

According to such a configuration, the impact applied to the rolling member 151 can be buffered by the buffer member 171. Thereby, the possibility that the rolling member 151 is damaged by the striking impact can be reduced.

In addition, while the first portion 156'a is moved relative to the second portion 156'b for the gastric buffering action, the protruding portion 156'c is caught by the restricting portion 156'd, The portion 156'a does not separate from the hollow portion of the second portion 156'b. This ensures that relative movement to the second portion 156'b of the first portion 156'a is ensured while the engagement of the first portion 156'a and the second portion 156'b is not released do.

The above-described object-protecting heat treatment furnace is not limited to the configuration and the operation method of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: object protection type heat treatment furnace 110: body
111: heating chamber 112: processing chamber
130: drive unit 131: drive roller
150: rolling contact unit 151: rolling member
153: mounting member 154, 154 '
155: engaging portion 156: upper rod
157: lower rod 158: shaft
159: Retaining pin 160: Connection bar
161: first coupling member 163: second coupling member
171: buffer member

Claims (15)

A furnace body having an inner space; A drive unit rotatably installed on the body and configured to support the object in the internal space to advance the object; And a rolling contact unit installed on the furnace body so as to be positioned on the upper side of the driving unit and configured so that the object is in rolling contact with the object when traveling toward the furnace body,
Wherein the rolling contact unit comprises: a rolling member arranged so as to be able to contact the object; And an installation member rotatably supporting the rolling member and coupled to the furnace body,
The mounting member includes: an upper rod and a lower rod; A shaft having both ends connected to the upper rod and the lower rod and to which the rolling member is installed; And a retaining pin provided at a portion exposed through the lower rod at a lower end of the shaft,
The shaft comprising: a head; And a shank extending from the head to a width smaller than the head,
Wherein the upper rod, the lower rod, and the rolling member each include a connection hole through which the shank passes.
The method according to claim 1,
Wherein the internal space includes a heating chamber formed to heat air by a heat source and a processing chamber located above the heating chamber and formed so that the object is thermally affected by the heated air,
Wherein the drive unit includes a drive roller disposed across the processing chamber.
The method according to claim 1,
Wherein the rolling member comprises a roller formed to rotate about one central axis, or a ball formed to rotate without a central axis.
3. The method of claim 2,
Wherein the center axis of rotation of the rolling member is disposed so as to be perpendicular to the center axis of rotation of the drive roller.
The method according to claim 1,
Wherein the rolling member is formed of a ceramic or graphite material.
A furnace body having an inner space; A drive unit rotatably installed on the body and configured to support the object in the internal space to advance the object; And a rolling contact unit installed on the furnace body so as to be positioned on the upper side of the driving unit and configured so that the object is in rolling contact with the object when traveling toward the furnace body,
Wherein the rolling contact unit comprises: a rolling member arranged so as to be able to contact the object; And an installation member rotatably supporting the rolling member and coupled to the furnace body,
The mounting member includes: an upper rod and a lower rod; A shaft connected to both the upper rod and the lower rod at both ends thereof and fitted into the rolling member; And a connecting bar having one end connected to the upper rod and the other end connected to the lower rod.
A furnace body having an inner space; A drive unit rotatably installed on the body and configured to support the object in the internal space to advance the object; And a rolling contact unit installed on the furnace body so as to be positioned on the upper side of the driving unit and configured so that the object is in rolling contact with the object when traveling toward the furnace body,
Wherein the rolling contact unit comprises: a rolling member arranged so as to be able to contact the object; And an installation member rotatably supporting the rolling member and coupled to the furnace body,
The mounting member includes: an upper rod and a lower rod; And a shaft connected to both ends of the upper rod and the lower rod and fitted to the rolling member,
Wherein the upper rod or the lower rod includes an enlarged portion that is positioned corresponding to the furnace body and protrudes from the outer surface of the upper rod or the body of the lower rod.
A furnace body having an inner space; A drive unit rotatably installed on the body and configured to support the object in the internal space to advance the object; And a rolling contact unit installed on the furnace body so as to be positioned on the upper side of the driving unit and configured so that the object is in rolling contact with the object when traveling toward the furnace body,
Wherein the rolling contact unit comprises: a rolling member arranged so as to be able to contact the object; And an installation member rotatably supporting the rolling member and coupled to the furnace body,
The mounting member includes: an upper rod and a lower rod; And a shaft connected to both ends of the upper rod and the lower rod and fitted to the rolling member,
A recess portion is formed in a portion of the upper rod or the lower rod exposed to the outside of the furnace body,
Wherein the mounting member comprises: a first coupling member coupled to an outer surface of the furnace body and including a passage portion through which the exposed portion passes; And a second coupling member coupled to the first coupling member and having a latching protrusion inserted into the recess portion to be engaged with the upper rod or the lower rod.
A furnace body having an inner space; A drive unit rotatably installed on the body and configured to support the object in the internal space to advance the object; And a rolling contact unit installed on the furnace body so as to be positioned on the upper side of the driving unit and configured so that the object is in rolling contact with the object when traveling toward the furnace body,
Wherein the rolling contact unit comprises: a rolling member arranged so as to be able to contact the object; And an installation member rotatably supporting the rolling member and coupled to the furnace body,
The mounting member includes: an upper rod and a lower rod; And a shaft connected to both ends of the upper rod and the lower rod and fitted to the rolling member,
Wherein the upper rod and the lower rod are respectively connected to the lower rod,
And a second portion having a first portion located adjacent the shaft and a hollow portion located farther from the shaft than the first portion and receiving the first portion,
Wherein the mounting member further comprises a spring, the first portion being fitted and both ends being respectively supported by the first portion and the second portion. delete delete delete delete delete delete

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