KR20230027787A - Heat treatment apparatus with enhanced durability of mesh belt - Google Patents

Abstract

The present invention relates to a heat treatment apparatus having a mesh belt with improved durability. More specifically, the present invention relates to a heat treatment apparatus having a mesh belt with improved durability, which can prevent damage to a mesh belt performing an orbital motion. The heat treatment apparatus comprises: a mesh belt assembly transferring products requiring a heat treatment; a drum assembly transmitting power to the mesh belt assembly so that the same performs an orbital motion; and a damping roller assembly aligning the mesh belt assembly. The mesh belt assembly includes: a plurality of rod-shaped support rods disposed at regular intervals; chains provided on the plurality of support rods to form a group, regularly connected to form a mesh pattern; and a plurality of guides provided on sides of the chains to be fastened to the support rods. The guides have both ends stepped from each other by being bent a predetermined angle. The neighboring guides are fitted on an end of one support rod while ends of the neighboring guides with different step directions partially overlap each other.

Description

Heat treatment apparatus with enhanced durability of mesh belt {Heat treatment apparatus with enhanced durability of mesh belt}

The present invention relates to a heat treatment apparatus with improved durability of a mesh belt, and more particularly, to a heat treatment apparatus with improved durability of a mesh belt capable of preventing damage to a mesh belt performing an orbital motion.

In general, a mesh belt conveyor is a conveyor connected by a metal belt having a plurality of through holes formed between a pair of sprockets, and most mesh belt conveyors are installed to pass through a high-temperature heating furnace.

Heat treatment refers to heating or cooling a metal for the purpose of changing the properties of metal or mechanical parts to obtain required strength. Such heat treatment is usually largely composed of a heat treatment furnace and a cooling device. A mesh belt conveyor is used as a means of transporting metal materials or mechanical parts to the inside of the device.

1 is a perspective view showing a mesh belt for heat treatment according to the prior art, and FIG. 2 is a partially enlarged view showing a side portion of the mesh belt for heat treatment according to the prior art.

Referring to FIG. 1, the mesh belt has a simple mesh shape, and thermal expansion occurs due to the nature of the metal material in the process of continuously passing through the inside of a high-temperature heating furnace. The material of such a mesh belt is usually an alloy steel of nickel and chromium, and the heat resistance is about 1000 ° C to 1100 ° C.

However, since the mesh belt as described above simply has a mesh shape in which the loop chains 200 are woven together, frequent friction occurs with the heating device installed inside the heat treatment furnace during transport to the inside of the heat treatment furnace, resulting in the mesh belt itself There are frequent cases where it cannot withstand the heat and is damaged.

As can be seen with reference to FIGS. 1 and 2, in the prior art mesh belt, a plurality of support pins 100 are arranged at regular intervals, and ring chains 200 are connected between the support pins 100 to form a mesh belt. made up of

At this time, at the side ends of the support pin 100 and the ring chain 200, the side portions of the mesh belt are fixed by bending the leftover portions to be fastened to each other and partially welding the fastened portions to each other.

However, when the support pin 100 and the ring chain 200 are bent and fastened to each other and welded, the fastening force is weakened in the process of repeatedly passing through the inside of a high-temperature heating furnace, and the welded portion becomes soft, forming a mesh belt. There is a problem that is easily deformed.

As a result, the deformed mesh belt does not smoothly perform the orbital motion by the driving roller, and the fastening part of the deformed part becomes weak, causing the mesh belt to be damaged or the conveyor to stop working. .

KR 2003-0085777 A KR 10-1839277 B1 KR 20-0289900 Y1

An object of the present invention for solving the above problems is to prevent the fastening force from being weakened when the mesh belt expands due to high heat.

Another object of the present invention is to provide a heat treatment apparatus with improved durability of a mesh belt, in which the mesh belt can continue orbital motion without damaging parts in a curved section.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention that are not mentioned here are those of ordinary skill in the art to which the present invention belongs from the following description. will be clearly understandable.

Heat treatment apparatus with improved durability of a mesh belt according to an embodiment of the present invention for solving the above problems includes a mesh belt assembly for transporting a product requiring heat treatment, and a drum for transmitting power so that the mesh belt assembly orbits In the heat treatment apparatus with improved durability of a mesh belt including an assembly and a damping roller assembly for aligning the mesh belt assembly, the mesh belt assembly includes a plurality of rod-shaped support rods disposed at regular intervals, and a plurality of support rods It includes a chain that is regularly connected in a cluster to form a mesh pattern, and a plurality of guides provided to be fastened to a support bar on the side of the chain, wherein the guide is bent at a predetermined angle so that both ends form a step, and adjacent to each other The guide is characterized by partially overlapping and fitting end portions of different step directions to one end of one support rod.

Preferably, an elliptical first fastener is formed at one end of the guide and a circular second fastener is formed at the other end, and the first fastener and the second fastener are respectively fastened to ends of support rods adjacent to each other, Supports the gap between the support rods, and the end of the support rod passes through the first fastener of the guide and is fixed to the second fastener of the neighboring guide by welding, so that only the first fastener can pivot along the outer circumferential surface of the support rod. can do.

Preferably, the damping roller assembly has a plurality of protrusions formed on an outer circumferential surface, a damping roller provided with a roller having a rotating shaft perpendicular to the moving direction of the mesh belt assembly, and a plurality of damping rollers are arranged, the A damping roller box whose bottom surface is opened so that a part of the damping roller protrudes, a link bar connected to one side of the damping roller box, and a hydraulic machine for moving the link bar downward so that the damping roller contacts the chain. can

Preferably, the damping roller box may further include a damping shaft coupling portion provided to be fastened to both ends of the rotation shaft of the damping roller, and a damper portion covering an outer circumferential surface of the damping shaft coupling portion and providing elastic force. .

Preferably, the present invention further includes a guide roller assembly, wherein a plurality of guide roller assemblies are provided in contact with both sides of the mesh belt assembly, guide rollers for guiding the mesh belt assembly so that it does not deviate from the track, Further comprising a guide roller holder for supporting the rotation axis of the guide roller and a guide roller elastic part for providing elastic force to the guide roller holder, wherein the guide roller located on one side of the mesh belt assembly has elastic force in the direction of the other side of the mesh belt assembly. can

The heat treatment apparatus with improved durability of the mesh belt according to the present invention has an effect of preventing the fastening force from being weakened when the mesh belt expands due to high heat by welding the end of the support bar to the end of the guide.

The heat treatment device with improved durability of the mesh belt according to the present invention can continue the orbital motion without damaging each part in the curved section through the configuration of the guides fastened to the ends of the support rods adjacent to each other to support the gap between the support rods. There is an effect of providing a heat treatment device with improved durability of the mesh belt.

1 is a perspective view showing a mesh belt for heat treatment according to the prior art.
2 is a partially enlarged view showing a side portion of a mesh belt for heat treatment according to the prior art.
3 shows a mesh belt assembly according to an embodiment of a heat treatment apparatus with improved durability of a mesh belt according to the present invention, and shows a shape when the mesh belt assembly passes downward through heating in an endless track.
Figure 4 shows an exploded assembly view of a support rod and a guide according to an embodiment of a heat treatment apparatus with improved durability of a mesh belt according to the present invention.
5 is an exemplary view showing a form in which a support rod and a guide are coupled according to an embodiment of a heat treatment apparatus having improved durability of a mesh belt according to the present invention.
6 is a perspective view showing a guide according to an embodiment of a heat treatment apparatus with improved durability of a mesh belt according to the present invention.
7 is an exemplary view showing that the support rod can flow according to the shape of the first fastener of the guide in the heat treatment apparatus with improved durability of the mesh belt according to the present invention.
8 is an exemplary view showing that a pair of guides adjacent to each other are coupled to one support rod and then rotatable in a heat treatment apparatus having improved durability of a mesh belt according to the present invention.
9 is a side perspective view of a damping roller assembly according to an embodiment of a heat treatment apparatus with improved durability of a mesh belt according to the present invention.
10 is a front perspective view of a damping roller assembly according to an embodiment of a heat treatment apparatus with improved durability of a mesh belt according to the present invention.
11 is an exemplary view showing that the damping roller assembly approaches the mesh belt assembly in the heat treatment apparatus with improved durability of the mesh belt according to the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only the present embodiments make the disclosure of the present invention complete, and those skilled in the art in the art to which the present invention belongs It is provided to fully inform the person of the scope of the invention. And terms used in this specification are for describing the embodiments, and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless otherwise specified in the phrase.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. On the other hand, the drawings and detailed descriptions of configurations and their actions and effects, which can be easily known by those skilled in the art, are simplified or omitted, and will be described in detail focusing on parts related to the present invention.

The mesh belt is provided in the form of an endless track and can transfer products requiring heat treatment to the heating furnace. The mesh belt applied to the present invention is provided to heat-treat various metal parts while passing through a high-temperature heating furnace, and since the chain and attached parts constituting the mesh belt are also exposed to high-temperature heat, thermal expansion occurs and a problem occurs. In particular, there was a problem that the tension of the belt was lowered or the alignment was disturbed due to high temperature, and the mesh belt was severely damaged so that it could not function properly. In order to solve this problem, the following configurations were devised.

As shown in FIGS. 3 to 11, the heat treatment device with improved durability of the mesh belt according to the present invention includes a mesh belt assembly 1 for transporting products requiring heat treatment, and the mesh belt assembly 1 orbiting In the heat treatment apparatus with improved durability of a mesh belt including a drum assembly for transmitting power and a damping roller assembly (2) for aligning the mesh belt assembly (1), the mesh belt assembly (1) is at regular intervals A plurality of support rods 11 in the form of rods disposed thereon, a chain 12 regularly connected in a cluster to the plurality of support rods 11 to form a mesh pattern, and a support rod 11 on the side of the chain 12 ) and includes a plurality of guides 13 provided to be fastened, the guides 13 are bent at a predetermined angle to form a step at both ends, and the guides 13 adjacent to each other are at the end of one support rod 11 It may be characterized in that ends having different step directions are partially overlapped and fitted.

First, as shown in FIGS. 3 to 5 , the mesh belt assembly 1 may include a support rod 11 , a chain 12 and a guide 13 .

As shown in FIG. 4, a plurality of support rods 11 are arranged at regular intervals, and are formed in a long rod shape. When the number of these support rods 11 increases, the length of the mesh belt also increases.

In addition, the distance at which the support bars 11 are disposed varies according to the length at which the chains 12 are bound, and the shape of the support bars 11 can be formed correspondingly according to the type of the chain 12 to be bound. there is.

As shown in FIG. 3 , the chains 12 are regularly connected to the plurality of support rods 11 in a cluster to form a mesh pattern, so that a mesh belt shape is formed as a whole. Metal materials or mechanical parts to be subjected to heat treatment are placed on the chain 12 .

As the chain 12, a short link chain 12 may be generally used, and a stud link chain 12 may be used in an environment in which heavy objects are handled. The type and shape of such a chain 12 are not limited and may be variously selected according to the use environment.

As shown in FIGS. 5 and 6 , the guides 13 are fastened to ends of the support rods 11 adjacent to each other to support the gap between the support rods 11 . Additionally, it may serve as a stopper to prevent the chain 12 from being separated from the end of the support bar 11, but this configuration is not unconditionally limited, and a separate stopper or stopper is attached to the support bar 11. formed to limit the moving radius of the chain 12.

It is preferable that the guide 13 as described above is formed long upward from the bottom surface of the clustered chain 12, and by this configuration, metal materials or mechanical parts to be subjected to heat treatment placed on the chain 12 flow down. fall can be prevented.

More specifically, as shown in FIGS. 4 to 6, the guide 13 is bent at a predetermined angle to form a step at both ends, and the guides 13 adjacent to each other have a step at the end of one support rod 11. The ends having different directions are partially overlapped and fitted.

In addition, the end of the support rod 11 is welded to the fastening part of the guide 13 overlapping outwardly so that only the end of the inner guide 13 that is not fixed is pivotally provided.

In addition, as shown in FIGS. 6 and 7, the end of the guide 13 located inside forms an elliptical through-hole through which the end of the support rod 11 passes, so that the mesh belt assembly 1 can smoothly pass through the curved section. can pass

More specifically, as shown in FIG. 6 , a first fastener 131 and a second fastener 132 may be formed in the guide 13 .

The first fastening hole 131 is formed in an elliptical shape at one end of the guide 13, and the support bar 11 can pass therethrough.

In addition, the second fastening hole 132 is formed in a circular shape at the other end of the guide 13, and it is preferable that the end of the support rod 11 passes through and is fixed by welding.

That is, an elliptical first fastener 131 is formed at one end of the guide 13 and a circular second fastener 132 is formed at the other end, and the first fastener 131 and the second fastener are formed. The spheres 132 are fastened to ends of the support rods 11 adjacent to each other and serve to support the gap between the support rods 11 .

In addition, as shown in FIGS. 3 and 5, the end of the support rod 11 passes through the first fastening hole 131 of the guide 13 and connects to the second fastening hole 132 of the neighboring guide 13. By being fixed through welding to the first fastener 131, only the support bar 11 along the outer circumferential axis rotation is possible. As described above, this means that the ends of adjacent guides 13 having different step directions overlap each other, and the first fastener 131 and the second fastener 132 are respectively formed according to the step direction.

As a more detailed description, as shown in FIG. 7, only the end of the guide 13 on which the first fastening hole 131 overlaps inwardly is formed, and only the end of the guide 13 is pivotable about the support rod 11, and the neighbor overlapping outwardly The rotation of the second fastener 132 of the guide 13 is limited.

That is, as shown in FIG. 8, one side of the guide 13 is integrally moved with one support bar 11 and rotation of the shaft is limited, but the other end is provided to be axially rotatable in the neighboring support bar 11. It will be. This is a configuration provided for the mesh belt assembly 1 to orbit along the radius of curvature of the drum smoothly in a curved section on orbital motion. When the curved section is formed by the drum assembly, the guides 13 adjacent to each other stand side by side in parallel through the configuration of the support rod 11 and the first fastener 131 and the second fastener 132 It is possible to pass through the curved section in the form of a 'V' shape angle change.

In the conventional case, the support bar 11 was fastened to the guide 13 by screwing with a nut, etc., but wear and damage to the fastening part with the guide 13 occurred in the curved section during the orbital motion of the mesh belt assembly, so that the screwing was difficult. In many cases, damage occurred and the operation of the heat treatment equipment had to be stopped.

However, the durability of the fastening part of the mesh belt assembly 1 is improved by overlapping the ends of the guides 13 adjacent to each other and completely fixing the end of the support bar 11 through welding, and through the first fastening hole 131 Since it can pass through curved sections smoothly, the effect of improving overall durability can be expected.

In addition, in the heat treatment process, the mesh belt assembly 1 made of metal is expanded or contracted by heating and cooling. At this time, the elliptical through hole of the first fastening hole 131 of the guide 13 allows the mesh belt assembly 1 to maintain sufficient flexibility.

In addition, as described above, the guide 13 bent to form a step allows the mesh belt assembly 1 to be supported more flexibly when it is thermally expanded and stretched, and a large load is momentarily applied to the mesh belt assembly 1. It alleviates the impact of tensile force that occurs when

Next, as shown in FIGS. 9 to 11, the damping roller assembly 2 helps align the orbital motion of the mesh belt assembly 1 and keeps the conveying surface of the mesh belt assembly 1 flat. It is a structure designed for

The damping roller assembly 2 can flatten the crumpled or misaligned chain 12 by pressing the chain 12 with a certain pressure with the damping roller 21 having protrusions.

In addition, the damping roller assembly 2 serves to correct the trajectory so that the mesh belt with a distorted trajectory can correctly orbit.

Specifically, as shown in FIG. 9, the damping roller assembly 2 includes a damping roller 21, a damping roller box 22, a link bar (not shown) and a hydraulic machine (not shown). It can be.

As shown in FIG. 10, the damping roller 21 has a plurality of protrusions formed on its outer circumferential surface, and a rotation axis is provided as a roller that maintains a vertical direction in the moving direction of the mesh belt assembly 1.

In addition, the damping roller box 22 has a plurality of damping rollers 21 arranged, and a bottom surface thereof is opened so that a part of the damping roller 21 protrudes.

More specifically, as shown in FIG. 9 , the damping roller box 22 may further include a damping shaft defective portion 221 and a damper portion 222 .

The damping shaft defect part 221 is provided to be coupled to both ends of the rotation shaft of the damping roller 21, and serves to support the rotation shaft of the damping roller 21.

In addition, the damper part 222 may provide elastic force to the damping shaft defective part 221 while surrounding the outer circumferential surface of the damping shaft defective part 221 .

In addition, the link bar (not shown) is connected to one side of the damping roller box 22 and can move up and down integrally with the damping roller box 22.

In addition, the hydraulic machine (not shown) serves to move the link bar (not shown) downward so that the damping roller 21 comes into contact with the chain 12.

In more detail, as shown in FIG. 11, the rotational axis of the damping roller 21 has an elastic force to maintain the vertical direction of the orbital movement of the mesh belt. Therefore, when the damping roller 21 comes into contact with the chain 12 of the mesh belt assembly 1 whose track is disturbed, the elastic force of the damping roller 21 enables the mesh belt assembly 1 to return to an accurate trajectory. At this time, the reason why the damping roller 21 must have elasticity is that when the trajectory is aligned in strong contact with the mesh belt without a certain elasticity, there is a high risk of damage to the chain 12, and the damping roller 21 or the damping roller (21) Because there is also a risk of damage to the rotating shaft.

Damper parts 222 are further provided at both ends of the rotating shaft of the damping roller 21 to offset impact. The damper unit 222 is preferably provided as an assembly including a rubber packing or a spring to play a damping role. That is, the trajectory of the chain 12 of the mesh belt assembly 1 can be smoothly corrected in the correct orbital motion direction without being bent by the damping roller 21 by the rubber packing or spring assembly serving as damping.

In addition, since the protrusion of the damping roller 21 enters between the orbiting mesh belt chains 12, the force can be easily transmitted to the chain 12.

Therefore, it is preferable that the protrusion of the damping roller 21 protrudes sufficiently to enter and exit between the chains 12. In addition, the degree of protrusion may be selected in consideration of the thickness of the chain 12 pattern.

In addition, it is preferable that the projections of the damping roller 21 form a straight line along the length direction of the roller, and may vary according to the interval and pattern of the chain 12 of the mesh belt assembly 1.

In addition, the width of the damping roller 21 is provided at a predetermined interval shorter than the overall width of the chain 12 so that the damping roller 21 does not damage the guide 13 of the mesh belt assembly 1, and the damping roller 21 ) It is preferable that the entire roller surface of the mesh belt assembly 1 is utilized to correct the traveling direction.

In addition, in one embodiment, there may be a configuration in which a plurality of damping roller boxes 22 are provided to correct the movement direction of the mesh belt assembly. This can reduce the load required because more damping rollers 21 can be used to correct and flatten the track of the mesh belt assembly 1.

In addition, there may be an embodiment in which a plurality of damping rollers 21 are provided at regular intervals without a damping roller box 22 to correct the movement direction of the mesh belt assembly 1, but including the damping roller box 22 It is preferable to be provided in a form with improved durability.

In this way, the damping roller 21 can serve not only to correctly correct the trajectory of the mesh belt assembly 1, but also to evenly spread the folded or uneven surfaces between the chains 12.

Meanwhile, the heat treatment apparatus having improved durability of the mesh belt according to the present invention may further include a guide roller assembly.

The guide roller assembly is configured to prevent the mesh belt assembly 1 from moving off the track during orbital motion, and includes a guide roller, a guide roller fixing base, and a guide roller elastic part.

A plurality of guide rollers are provided in contact with both sides of the mesh belt assembly 1, and serve to guide the mesh belt assembly 1 so that it does not deviate from the track.

In addition, the guide roller fixing unit serves to support the rotating shaft of the guide roller.

In addition, the guide roller elastic part may provide elastic force to the guide roller fixing unit.

That is, the guide roller can guide the trajectory 13 of the mesh belt assembly 1 elastically by the guide roller elastic part.

Specifically, a plurality of guide roller assemblies are provided, and a support for fixing and supporting the guide roller assembly may be further provided.

In another embodiment, the guide roller assembly may be installed on a wall surface located on the side of the mesh belt.

Next, the drum assembly plays a role of transmitting power so that the mesh belt assembly 1 orbits in contact with the mesh belt assembly 1.

Specifically, the drum assembly may include a main drum, an auxiliary drum, and an elastic device.

The main drum is provided as a roll-shaped drum in contact with the mesh belt assembly 1, and serves to transmit power so that the mesh belt assembly 1 orbits. That is, the main drum transmits the driving force to the contacting chain 12 while rotating the shaft.

In addition, the auxiliary drum may be provided as a roll-shaped drum in contact with the chain 12, and an elastic device including a spring may be provided at an end of a rotating shaft to maintain track tension of the mesh belt assembly 1.

Specifically, the auxiliary drum is formed to have a relatively shorter diameter than the main drum, is provided on both sides of the main drum, and operates as the mesh belt assembly 1 is interposed between the main drum and the auxiliary drum.

In one embodiment, a coating layer is formed on the outer circumferential surface of each of the auxiliary drums to induce friction with the chain 12 to prevent idling.

In addition, an elastic device may be provided in the auxiliary drum.

Specifically, the elastic device may include a frame, an auxiliary drum shaft coupling part, a sliding part, a spring part, and a spacing adjusting part.

The frame is formed in a rectangular frame, and the auxiliary drum shaft coupling part is provided on the inside. The auxiliary drum shaft coupling part is installed inside the frame, and an end of the rotation shaft of the auxiliary drum is fastened to the inner circumferential surface.

In addition, the sliding part is provided parallel to each other on the inner upper and lower surfaces of the frame, and it is preferable that the upper and lower ends of the auxiliary drum shaft coupling part are coupled to each other and provided in the form of a rail so as to be slidable.

In addition, the spring part is provided between one side of the auxiliary drum shaft coupling part and the frame, and serves to apply an elastic force when the auxiliary drum shaft coupling part slides along the sliding part.

In addition, the gap adjusting portion penetrates one side of the frame and the spring portion and is screwed to the auxiliary drum shaft coupling portion. That is, the gap adjusting part can adjust the gap between the auxiliary drum shaft coupling part and the frame by tightening the screw on one side of the frame.

Through such a configuration of the elastic device, the auxiliary drum can flexibly respond to the thermally expanded mesh belt assembly 1 to maintain frictional force and also control the tension of the mesh belt assembly.

Conventionally, since the operator had to directly stop the equipment and adjust the spacing of the auxiliary drums so that the mesh belt chain 12 thermally expanded through the heating furnace maintains a constant tension, labor had to be input. On the other hand, in the present invention, since the auxiliary drum can continuously have frictional force on the mesh belt assembly 1 through the elastic device, it is time-efficient and economically efficient, and the operator does not need to approach the heated mesh belt assembly 1. Therefore, the risk of safety accidents can be greatly reduced.

Meanwhile, the elastic device may further include a non-contact sensor, a tension gauge, and an actuator.

The non-contact sensor serves to predict thermal expansion according to the surface temperature of the mesh belt assembly 1.

In addition, the tension gauge may measure the tension of the mesh belt assembly 1 and calculate a movement interval required for the auxiliary drum to maintain the preset tension.

In addition, the actuator serves to control the gap adjusting unit according to the calculation result of the non-contact sensor or tension gauge.

That is, the degree of thermal expansion of the mesh belt assembly 1 is calculated through the configuration of the elastic device to derive the position of the auxiliary drum required to maintain the tension, and the actuator operates accordingly to move the auxiliary drum.

In another embodiment, the tension gauge directly measures the tension of the mesh belt assembly 1, calculates the required auxiliary drum interval according to the tension of the mesh belt assembly 1, and operates the actuator accordingly do.

As such, it will be understood that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art to which the present invention pertains.

Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from equivalent concepts should be construed as being included in the scope of the present invention.

1: mesh belt assembly
11: support bar
12 : chain
13: Guide
131: first fastener
132: second fastener
2: Damping roller assembly
21: damping roller
22: damping roller box
221: damping shaft coupling part
222: damper unit

Claims (5)

A heat treatment device with improved durability of a mesh belt including a mesh belt assembly for transporting products requiring heat treatment, a drum assembly for transmitting power so that the mesh belt assembly orbits, and a damping roller assembly for aligning the mesh belt assembly in
The mesh belt assembly,
A plurality of support rods in the form of rods arranged at regular intervals;
chains forming a cluster and regularly connected to the plurality of support rods to form a mesh pattern; and
Including; a plurality of guides provided to be fastened to the support bar on the side of the chain,
The heat treatment apparatus with improved durability of the mesh belt, characterized in that the guides are bent at a predetermined angle to form a step at both ends, and the guides adjacent to each other are partially overlapped and fitted with ends having different steps in the direction of one support rod. According to claim 1,
An elliptical first fastener is formed at one end of the guide and a circular second fastener is formed at the other end, and the first fastener and the second fastener are respectively fastened to the ends of the support rods adjacent to each other, so that there is a gap between the support rods. support,
The end of the support rod is fixed through welding to the second fastener of the neighboring guide through the first fastener of the guide, so that only the first fastener can pivot along the outer circumferential surface of the support rod Heat treatment with improved durability of the mesh belt. Device. According to claim 1,
The damping roller assembly,
A damping roller having a plurality of protrusions formed on an outer circumferential surface and having a rotating shaft perpendicular to the moving direction of the mesh belt assembly;
a damping roller box in which a plurality of damping rollers are arranged and a bottom surface of which is opened so that a portion of the damping roller protrudes;
a link bar connected to one side of the damping roller box; and
A heat treatment apparatus with improved durability of the mesh belt, characterized in that it comprises a; hydraulic machine for moving the link bar downward so that the damping roller comes into contact with the chain. According to claim 3,
The damping roller box further includes a damping shaft coupling portion provided to be fastened with both ends of the rotation shaft of the damping roller, and a damper portion that surrounds an outer circumferential surface of the damping shaft coupling portion and provides elastic force Improved durability of the mesh belt heat treatment device. According to claim 1,
The present invention further includes a guide roller assembly, wherein the guide roller assembly,
a plurality of guide rollers provided in contact with both side surfaces of the mesh belt assembly and guiding the mesh belt assembly so that it does not deviate from its orbit;
a guide roller fixing table supporting the rotating shaft of the guide roller; and
Further comprising a guide roller elastic part providing elastic force to the guide roller holder,
The heat treatment device with improved durability of the mesh belt, characterized in that the guide roller located on one side of the mesh belt assembly has elasticity in the direction of the other side.

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