KR101767508B1 - Thermal processing equipment - Google Patents

Abstract

An objective of the present invention is to provide heat treatment equipment capable of realizing a driving drum to operate a conveyor in a structure to be simply maintained. To achieve this, the equipment comprises: a first conveyor installed in a first heat treatment section, a quenching section, a second heat treatment section, and first and second heat treatment sections to transfer an object; a first driving unit including a driving drum unit installed on one side of the first conveyor and a driven drum unit installed on the other side of the first conveyor; a second conveyor installed in the quenching section to transfer the object; a second driving unit operating the second conveyor, and including a driving rotary unit installed on one side of the second conveyor and a driven rotary unit installed on the other side of the second conveyor; and a lift unit to supply the object to the first heat treatment section.

Description

Thermal processing equipment

The present invention relates to a heat treatment facility, and more particularly, to a heat treatment facility that allows a target body to be conveyed to a conveyor and heated to have uniformity of hardness and texture, and to secure machinability and physical property values.

The heat treatment of metal materials using heat treatment equipment is a process for restoring and strengthening the characteristics and structure of metal materials after manufacturing of metal parts. In particular, heat treatment process of automobile parts is performed in the order of heating process, quenching process and tempering process by high frequency heating.

Among the heat treatment equipment for performing the heat treatment of the metallic material, there are a lift for charging the heat treatment object to the inlet side of the heating furnace, a driving drum for operating the conveyor belt for conveying the object to the heating furnace, And a rotating body for actuating a mash belt for transferring the mash belt to pass through.

First, in the operation of the conveyor belt, a plurality of rotary drums are disposed on both sides of the conveyance belt so that one rotary drum is axially rotated to form a driving drum unit, and the other rotary drum is a driven drum unit to convey the object. The structure of the conventional driving drum unit is such that a main drum rotatably driven by a rotational driving force and an auxiliary drum installed on both sides of the main drum are installed and a conveyor belt is interposed between the main drum and the auxiliary drums.

In order to prevent idle rotation between the conveyor belt and the main drum, the surface of the main drum is coated on the outer circumferential surface of the main drum so that the rotation axis of the auxiliary drums is positioned higher than the rotation axis of the main drum, . ≪ / RTI >

In the conventional structure, when the coated portion of the main drum is worn, it is necessary to remove the main drum and coat it on the surface. In the case of the main drum, the main drum is located on both sides of the auxiliary drum. There has been an inconvenience.

Second, the rotating body is provided with a driving rotating body for operating the mesh belt on the outside of the quenching oil storage, and the driven rotating body is positioned in the quenching oil storage to move the object.

The conventional rotating body is composed of a combination of a thick circular plate installed along the rotation center axis when it is contained together with quenching oil. This structure is problematic in that the surface of the rotating body contacting with the mesh belt is smaller than the drum surface, causing idle rotation between the rotating body and the mesh belt.

Finally, in the case of a lift, in a conventional method of feeding an object to a conveyor belt on a heating furnace loading side, the objects loaded on the pallet are transported to a forklift, poured on the front side of the transporting means on the loading side, It has been common practice for an operator to push a loaded object onto the conveyor belt side.

 In this conventional method, there is a problem that the operator must directly dispense the object in the bad condition due to the high-temperature environment around the heat treatment furnace and the dust generated due to the pouring of the object, and push the object into the conveying means. Development is necessary.

Korean Registered Patent No. 10-1039944 (Publication Date: June 6, 2011) Korean Registered Patent No. 10-1006753 (Publication Date: January 10, 2011)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a heat treatment facility capable of improving the conventional problems of structures for transferring a target object in a heat treatment facility as follows.

And an object of the present invention is to provide a heat treatment apparatus capable of realizing a driving drum portion for operating a conveyor with a simple maintenance structure.

It is another object of the present invention to provide a heat treatment apparatus provided with a rotating body capable of stably operating a mash belt even though the drum is not in a cylindrical shape like a drum in a condition where the oil is contained in the oil of the storage tank and is driven to rotate.

It is another object of the present invention to provide a heat treatment facility provided with a lift unit capable of automatically supplying objects with a conveyor belt on the charging side.

It is another object of the present invention to provide a heat treatment apparatus provided with an automatic loading unit capable of loading objects subjected to heat treatment.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And will be included in a wide range.

According to an aspect of the present invention, there is provided a heat treatment apparatus comprising: a first heat treatment section for first heating a target object to be supplied; a quenching section for cooling a target object heated in the first heat treatment section by immersing the object in oil in a storage tank; A first conveyor installed in each of the first heat treatment zone and the second heat treatment zone for conveying the object, a driving drum unit installed at one side of the first conveyor, And a driven drum disposed on the other side of the first conveyor, a second conveyor installed in the quenching zone for conveying the object, and a second conveyor for operating the second conveyor, A second driving unit including a drive circuit installed and a driven rotation part provided on the other side of the second conveyor, And a plurality of coating rollers are provided on the outer circumferential surface of each of the main drums on the outer circumferential surface of each of the main drums. In the heat treatment equipment, And a second conveyor is interposed between the main drum and the auxiliary drum to operate the conveyor. The driven rotation unit includes a center shaft, a plurality of circular plates disposed along the longitudinal direction of the center shaft, And a plurality of contact rods provided along a periphery of each of the discs, wherein the second conveyor is in close contact with the discs and the contact rods of each of the rotors, 1, a base frame provided at the rear of the first conveyor in the heat treatment section, And a support frame for supporting the rotary shaft is installed on both sides of the upper end portion of the support frame, and a support frame for supporting the support frame and the first heat treatment section A bridge installed between the first conveyor and the first conveyor in the first heat treatment section and inclined downward toward the first conveyor in the first heat treatment section, a receiving box rotatably coupled to the rotary shaft to receive the pallet on which the objects are loaded, The cylinder tube side is rotatably coupled to each of the front sides of the housing, and each rod side is rotatably engaged with the housing case. As the rod is drawn out, the housing is rotated upward about the rotation axis, And a hydraulic cylinder for lifting the hydraulic cylinder so as to be inclined downward The features.

According to a preferred embodiment of the present invention, a loading box 200 for loading a pallet on which a subject subjected to a heat treatment is dropped and loaded is provided in a shipping section in front of a second conveyor in the second heat treatment section, And a rear end portion of the rod is rotatably coupled to both sides of the rear portion of the frame so that the front portion of the loading frame is rotated upward And a hydraulic cylinder for lifting the loading box slantingly.

In addition, according to a preferred embodiment of the present invention, a buffer unit is further provided between the shipment unit and the loading box to guide the falling object to fall into the loading box while buffering the object.

According to a preferred embodiment of the present invention, the buffer unit includes a buffer plate rotatably coupled to the front end of the conveyor in the second heat treatment zone and having bent portions formed on both sides to prevent the object from dropping downward, And an elastic means for connecting an elastic plate provided on the inner surface and a connecting rod provided on both sides of the shipment portion and the outer surface of the bent portion.

The bridges are each formed of a pair of angles that are opposed to each other in the vertical direction, and a plurality of sidewall conveying rollers are installed along the longitudinal direction between the respective angles. The bridges are installed so as to face each other in the horizontal direction, A left connection frame and a right connection frame connected to the front upper side of the frame and each having a front end connected to a rear upper side of the first conveyor, A lower conveying roller provided between the lower side angles of the right connection frame along the longitudinal direction and a lower conveying roller provided on the upper side of the lower conveyance roller on the rear side of the left connection frame and the right connection frame, And a rear end surface connected to a rod of each of the pneumatic cylinders, Characterized in that comprises a push-head cross-section is concavely formed.

According to a preferred embodiment of the present invention, the bridge includes a dust collecting skirt for enclosing the lower portion of the bridge, a dust collecting case communicating with the dust collecting skirt through a tube, and a filter installed in a drawer- A dust collecting unit including a discharge pipe communicating with a lower portion of the dust collecting case and a suction fan installed on the discharge pipe.

As described above, according to the present invention, the following effects can be expected.

The maintenance of the driving drum portion is simplified, and the human, material, and temporal costs consumed thereby can be expected to be reduced.

In addition, since the rotating body according to the present invention can stably rotate the side of the mesh belt contained in the oil, it is possible to increase the rotating efficiency while increasing the contact area with the mesh belt without increasing the volume and weight The effect is expected.

 Further, since the object can be automatically supplied by the lift unit according to the present invention, there is an advantage that the work efficiency can be improved while minimizing the waste of manpower.

In addition, the operation load unit according to the present invention makes it possible to reduce the cost incurred by the workforce resident at the time of loading the existing object and to prevent the falling object from being damaged, thereby facilitating the quality control of the heat- .

In addition, other effects of the present invention can be achieved not only in the embodiments described above and in the claims of the present invention, but also in terms of the effects that can be easily obtained from them and the possibility of provisional advantages contributing to industrial development And that they will be included in a broader range.

1 is a view showing a heat treatment equipment according to the present invention.
2 is a view showing an embodiment of the driving drum unit shown in FIG.
FIG. 3 is a view showing another embodiment of the driving drum unit shown in FIG. 1. FIG.
Fig. 4 is a view showing the rotating body shown in Fig. 1. Fig.
5 is a side view of the state before the operation of the lift unit shown in Fig.
FIG. 6 is a front view showing the state before the operation of the lift unit shown in FIG. 1; FIG.
7 is a side view of the operating state of the lift unit shown in Fig.
8 is a plan view and a sectional view of another embodiment of the lift unit.
9 is a side view of another embodiment of the lift unit.
10 is a side view of the pre-operation state of the automatic loading unit shown in FIG.
11 is a side view of the operating state of the automatic loading unit shown in FIG.
12 is a front view of the automatic loading unit shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. It is to be understood that the terminology used herein is for the purpose of describing the embodiments and is not intended to limit the scope of the present invention. It is to be understood that the singular forms of these terms include plural forms unless the context clearly dictates otherwise, Are intended to aid in the understanding of the description and are subject to change at any time.

As shown in FIG. 1, the heat treatment apparatus according to the present invention includes a first heat treatment section H1, a second heat treatment section H1, and a second heat treatment section H1. A quenching zone H2, and a second heat treatment zone H3.

The first heat treatment section H1 is a section for first heating the object supplied from the charging side of the first heating furnace made up of a plurality of tubular heaters. The quenching zone H2 is provided in front of the first heat treatment zone H1 and is a zone in which the primary heated object is cooled by immersing it in oil (quenching oil) of the storage tank. In addition, the second heat treatment zone H3 is provided in front of the quenching zone H2 and is a zone for heating (tempering) the target substance quenched in the second heating furnace for generating a high frequency.

In the section, a first conveyor or a second conveyor is provided for each section to convey the object. The belt of the first conveyor and the belt of the second conveyor may be composed of belt made of general synthetic rubber, but it is preferable that the belt is made of a mesh type in consideration of the quenching treatment, and each of the belts is provided with a drive unit .

The first conveyor is installed in each of the first heat treatment zone H1 and the second heat treatment zone H3 to transport the object. A first drive unit using a drum is installed in the first conveyor to operate the belt of the first conveyor. The first driving unit includes a driving drum disposed at one side of the first conveyor and a driven drum disposed at the other side of the first conveyor.

And the second conveyor is installed in the quenching section to transport the object. The belt of the second conveyor must transfer the object in the oil to the storage tank so that the second drive unit using the sprocket receiving the driving force to the chain is installed to operate the belt of the second conveyor. The second driving unit includes a driving circuit unit installed at one side of the second conveyor and having a sprocket connected to a chain for transmitting a driving force, and a driven rotation unit installed at the other side of the second conveyor.

In addition, a lift unit is provided behind the first heat treatment zone H1 to supply the object to the loading side of the first heat treatment zone H1, that is, the first conveyor loading side of the first heat treatment zone.

As shown in FIGS. 1 and 2 to 3, the driving drum unit 100 of the first driving unit includes a main drum and an auxiliary drum. The auxiliary drum 120 is formed on both sides of the main drum 110 to have a diameter that is relatively shorter than the diameter of the main drum 110, And the belt C1 is interposed between the main drum 110 and the auxiliary drum 120 to operate.

2, a coating layer 121 is formed on the outer circumferential surface of each of the auxiliary drums 120 to prevent friction between the driving drum portion 100 and the belt C1 of the first conveyor to cause idling .

As shown in FIG. 3, a plurality of coating rollers 121 are installed on the outer circumferential surface of each of the auxiliary drums 120 along the outer circumference of the auxiliary drum 120. The coating roller 121 is installed on the outer circumferential surface of the auxiliary drum 120 in a plurality of setting grooves formed along the outer circumference of the auxiliary drum 120. The setting groove portion is formed in an arc shape having a radius that is relatively longer than the sum of the radius of the coating roller 121 and the thickness of the coating layer 121C formed on the outer peripheral surface of the coating roller 121. [ The rotating shaft of the auxiliary drum 120 and the rotating shaft of each of the coating rollers 121 are separated from each other by a joint bar so that the coating rollers 121 and the auxiliary drums 121 are rotatable When the coating layer 121C of the coating roller 121 is worn out, the coating roller 121 is removed and the coating layer 121C of the coating roller 121 is repaired, so that maintenance can be performed without detaching the auxiliary drum 120 It becomes possible to expect an effect that is possible.

1 and 4, the driven rotation part of the second driving unit includes a rotating part 200 and a bearing part (not shown) for supporting the rotating body 200. The rotating body 200 includes a center shaft 210, a disc 220 and a contact rod 230 to improve the conventional structure in which a plurality of circular plates are formed in an aligned shape as the rotating body 200 rotates in the oil in the reservoir . (The driving circuit portion of the second driving unit may have the same structure as that of the driven rotation portion.)

The shaft 210 is rotatably supported on the bearing portion as a center rotational axis of the rotating body 200. The disk 220 has a predetermined diameter and a predetermined thickness, and a plurality of the disks 220 are installed at equal intervals along the longitudinal direction of the shaft 210. In addition, a plurality of contact bars 230 are installed along the outer periphery of each of the discs 220. A plurality of contact bars 230 are provided between the discs 220 along the outer circumference of the disc 220. The outer circumference of the contact bar 230 is disposed horizontally with the outer circumferential surface of the disc 220, The outer periphery of the disk 220 and the outer periphery of the contact rod.

1 and 5 to 9, the lift unit 300 is for supplying an object to the first conveyor loading side of the first heat treatment section H1, and includes a base frame 3100, a support frame 3200, a bridge 3300, an accommodation box 3400, and a pair of hydraulic cylinders 3500.

The base frame 3100 serves as a base for supporting the support frame 3200, the bridge 3300, the accommodation box 3400 and the hydraulic cylinders 3500. The base frame 3100 is spaced apart from the rear end of the first conveyor C1 by a predetermined distance As shown in FIG. The base frame 3100 is formed in a rectangular shape reinforced with interstices, and is composed of a combination of members made of pipes, C-shaped channels, or H-beams.

In addition, the support frame 3200 is installed upward from the upper portion of the base frame 3100, and the height thereof is relatively higher than the height of the first conveyor C1. On both sides of the upper end portion, A portion 3210 is provided. This support frame 3200 may also be composed of a combination of members consisting of a tube, C-shaped steel or H beam.

A horizontal member vertically installed on both sides of the upper portion of the base frame 3100, a horizontal member horizontally installed rearwardly from the upper end of each of the vertical members, and a plurality of vertical members horizontally disposed between the vertical members and the horizontal members. And a coupling member installed to support the vertical members and the horizontal members. On the upper portion of each of the horizontal members, a bearing portion 3210 for rotatably supporting the rotary shaft S is provided.

The bridge 3300 is installed between the support frame 3200 and the first conveyor C1 and is inclined downward toward the first conveyor C1. The bridge 3300 is installed such that when the container 3400 is lifted and tilted downwardly, the loaded object is poured down and slid down or tilted down to move the first conveyor C1.

The receptacle 3400 is then rotatably coupled to the rotation axis, to receive the pallet on which the objects are loaded. In addition, the pair of hydraulic cylinders 3500 are rotatably coupled to the cylinder tube 3510 side on both sides of the front side of the base frame 3100, and the receiving box 3400 and each rod 3520 side are rotatable So that the receptacle 3400 is lifted to be inclined downward toward the bridge 3300 by upwardly rotating the receptacle 3400 about the rotational axis S as the rod 3520 is pulled out by operation.

The lift unit 300 can lift the receptacle 3400 and control the receptacle 3400 to be inclined downward so that the object accommodated in the receptacle 3400 can be transferred to the bridge 3300. [ Hereinafter, configurations of the accommodation box 3400, the hydraulic cylinder 3500, and the bridge 3300 will be described in more detail.

The accommodation box 3400 is formed in a box-like shape having an open top. The accommodation box 3400 is formed in a rectangular shape and is installed at the rear end of the bottom plate 3410 and has a rectangular shape having a width equal to the width of the front end of the bottom plate 3410, The rear plate 3420 is formed at the front end of the bottom plate 3410 and is formed to be relatively longer than the height of the rear plate 3420. The width of the upper end is relatively narrower than the width of the lower end A front plate 3430 which is formed at an upper side in an isosceles trapezoidal shape so as to be gradually narrowed from one side toward an upper end and a rear plate 3420 and a front plate 3430 which are installed at both ends of the bottom plate 3410 The height of the front end portion is formed so as to correspond to the height of the rear plate 3420 and the height of the front end portion is set to correspond to the height of the front plate 3430 And a side plate 3440 having a trapezoidal shape having a diagonal from the upper end of the rear end toward the upper end of the front end, the width of which is gradually reduced along the longitudinal direction. .

Here, a plurality of holes are formed in the upper side of each side plate 3440, and the stop bar is fixed by inserting the stop bar into the pallet so that the pallet on which the object is loaded is detached from the accommodation box 3400 even if the accommodation box 3400 is lifted and inclined downward .

A support frame 3110 for supporting the rear side of the accommodation box 3400 rotatably coupled with the rotation axis S is provided at the upper end of the front end of the base frame 3100, A plurality of cushions formed of one material are provided. An auxiliary frame 3411 made of C-shaped steel is provided along the width direction of the bottom plate 3410 at the front end portion of the bottom side of the bottom plate 3410 of the accommodating box 3400 to accommodate the hydraulic cylinder 3500 So that the receiving box 3400 can be supported by the rotary shaft S and the support frame 3110 by being placed on the cushions in the standby state of the box 3400. [

Next, each of the pair of hydraulic cylinders 3500 is operated by hydraulic oil supplied from the outside, and includes a cylinder tube 3510 and a rod 3520. The front ends of the respective cylinder tubes 3510 are rotatably hinged to both sides of the front side of the base frame 3100 and the rear ends of the respective rods 3520 are rotatable on both sides of the rear surface of the front plate 3430 of the accommodation box 3400 Respectively.

Here, the rear surface of the front plate 3430 is rotatably coupled with the rotation axis S and the respective rods 3520, and the coupling portion with the rotation axis S should be formed relatively higher than the coupling portion with the rods 3520 will be.

Next, the bridge 3300 is installed between the support frame 3200 and the first conveyor C1 as described above, and is installed to be inclined downward toward the first conveyor C1. The configuration of the bridge 3300 will be described in detail below with the structure of the bridge 3500 inclined in this manner being taken into consideration.

The bridge 3300 includes a connection frame 3310, a lower plate 3320 and a side wall plate 3330.

The rear end of the connection frame 3310 is connected to the front upper side of the support frame 3200 and the front end of the connection frame 3310 is connected to the rear upper side of the first conveyor C1 to be inclined by the height difference. The connection frame 310 is formed in a rectangular shape reinforced between the connecting frames 310, and is realized by a combination of members made of pipes, C-shaped steel or H beams.

The lower plate 3320 is provided at the upper end of the connection frame 3310 and is formed so as to gradually narrow in width along the front side from one side. The side wall plate 3330 is vertically installed at both side ends of the lower plate 3320 so as to cover both sides of the lower plate 3320 so that objects slid or rolled by the lower plate 3320 are guided by the first conveyor C1, It is possible to prevent it from being detached to the outside.

When the cross section of the object is circular, the bridge 3300 can transfer the object to the first conveyor C1 effectively. However, when the object is in the form of a plate that can not be rolled, So that dust can be generated as objects are poured from the receptacle 3400, so that it can be realized as another embodiment capable of overcoming this.

Another embodiment of the bridge 3300 includes a left connecting frame 3310 ', a right connecting frame 3320', a lower conveying roller 3340 ', a casing 3350' And a push head 3370 '.

Each of the left connection frame 3310 'and the right connection frame 3320' is composed of a pair of angles opposed to each other in the vertical direction, and a plurality of sidewall conveying rollers 3330 ' So that interference can be avoided. In addition, the left connection frame 3310 'and the right connection frame 3320' are provided so as to face each other in the horizontal direction, and the respective rear ends thereof are connected to the front upper side of the support frame 3200, So that the front end of each of them is connected to the rear upper side of the first conveyor C1. In addition, the lower conveying roller 3340 'is disposed between the lower side angles of the left connection frame 3310' and the right connection frame 3320 'so as to be close to each other in the longitudinal direction so as to avoid interference do.

That is, the side wall conveying rollers 3330 'are rotatably installed between the angles of the left connection frame 3310' and the right connection frame 3320 'to form side walls, and the lower conveying rollers 3340' Side moving rollers 3330 'and the lower conveying rollers 3330', even though the objects falling from the receiving box 3400 are rotatably installed between the lower side angles of the right and left connecting frames 3310 'and 3320' 3340 'to move to the first conveyor C1.

In addition, the casing 3350 'is installed on the upper side of the lower conveying roller 3340' on the rear side of the left connection frame 3310 'and the right connection frame 3320', and the rod 3350 'of each pair of pneumatic cylinders 3360' (3362). The casing 3350 'is formed in the shape of a hollow enclosure, and the cylinder tube 3361 of each pneumatic cylinder 3360' is installed therein, and the entrance and exit holes are formed so that the respective rods 3362 can be taken in and out. At the same time, the push head 3370 'is connected to the rod 3362 of each of the pneumatic cylinders 3360', and its front end face is recessed. In other words, the push head 3370 'is formed in a hollow shape and has a concave front surface. The push head 3370' is formed in a concave shape so that the side wall conveying rollers 3330 'and the lower conveying rollers 3340' So that objects that can be caught between them can be pushed out. The push head 3370 'may be formed of a lightweight material having a high strength such as a reinforced plastic, so that the weight of the push head 3370' may be reduced.

Next, a dust collecting unit 3700 is installed on the lower side of the bridge 3300 for collecting dust generated as objects are poured by the receptacle 3400.

The dust collecting unit 3700 includes a dust collecting skirt 3710, a dust collecting case 3730, a filter portion 3740, a discharge path 3750, and a suction fan 3760 '. The dust collecting skirt 3710 is formed of a flexible material in the form of a hopper and collects dust falling down by covering the lower portion of the bridge 3300 evenly. The dust collecting case 3730 is formed in a box shape and communicates with the dust collecting skirt 3710 by a tube 3720. In addition, the filter unit 3740 is configured to surround the periphery of the multi-stage filter units stacked in a mesh form, and is installed in a drawer type on the upper part of the dust collection case 3730 so as to facilitate the replacement of the filter units . The discharge pipe 3750 is connected to the lower part of the dust collecting case 3730 to provide a passage through which the air having passed through the filter unit is discharged and the suction fan 3760 is installed on the discharge pipe 3750, So that the dust can be filtered by the filter unit 3740 and the filtered air can be discharged through the discharge pipe 3750. This suction fan 3760 follows a structure that is rotated by a motor driven by an external power source.

On the other hand, a plurality of air blowing fans are formed outside the left connection frame 3310 'and the right connection frame 3320' along the longitudinal direction thereof to guide the air current around the bridge 3300 to the lower side of the bridge 3300 So that the dust can be concentrated on the lower side of the bridge 3300. [

The operation sequence of the lift unit 300 according to the above configuration will be described as follows.

First, the pallet on which the objects are loaded is transported by a forklift and inserted into the accommodation box 3400. Then, the rod 3520 of the pair of hydraulic cylinders 3500 is operated to be drawn out to rotate the accommodation box 3400 upward, The objects are moved to the first conveyor C1 by bridging the bridge 3300 with the objects being lifted to be inclined downward toward the first conveyor 3300. In addition, the dust collecting unit 3700 can be operated to collect dust that may be generated. When all the objects are removed from the accommodation box 3400, the rod 3520 of the pair of hydraulic cylinders 3500 is operated to be drawn in, and the accommodation box 3400 can be returned to the pre-operation state.

A pair of hydraulic cylinders 3500 and a pneumatic cylinder 3360 'of the bridge 3300 and a suction fan 3750 of the dust collecting unit 3700 are connected to the wired or wirelessly so that the operator can remotely control the above- It is desirable to implement a structure that can be controlled by a controller.

Next, as shown in FIG. 1 and FIG. 10 to FIG. 12, the automatic loading unit 400 may be installed in the shipping section 4110 in front of the second conveyor C1 of the second heat treatment section H3. The automatic loading unit 400 includes a loading box 4200, a frame 4300, a hydraulic cylinder 4400, and a control unit 4500.

First, the automatic loading unit 400 is provided on a line in which a plurality of objects subjected to heat treatment are continuously shipped. The automatic loading unit 400 includes a first conveying line C1, a second conveying line L2, (Hereinafter, referred to as a shipment portion 4110) of the first conveyor C1.

Next, the loading box 4200 is configured to accommodate the pallet P on which the object to be dropped is loaded and unloaded from the loading deck 4110. The loading pallet 4200 is formed in a box shape having an open upper part and a front part to accommodate the pallet P After the object is loaded, the pallet P can be transferred when the loading is completed.

The frame 4300 is provided with a support member 4310 for rotatably supporting the rear upper both sides of the loading box 4200 with the shaft 4320 and is formed in a rectangular shape on the lower surface of the shipping section 4110. The support member 4310 is vertically installed on the rear upper surface of the frame 4300 and is coupled to the rear upper both sides of the loading box 4200 by a shaft 4320 so that the loading box 4200 can be rotatably supported. The rear end of the lower surface of the loading box 4200 is supported by the supporting member 4310 so that the load applied to the loading box 4200 while the load is applied to the loading box 4200 It is preferable to provide a bearing at the coupling portion between the support member 4310 and the shaft 4320. [

The hydraulic cylinder 4400 is coupled to the front end of the load 4410 on both sides of the front end of the loading box 4200 and the rear end of the hydraulic cylinder 4400 is rotatably coupled to both rear sides of the frame 4300, So that the loading tray 4200 is lifted at an angle.

The front end portion of the rod 4410 drawn out and drawn in due to the operation of the hydraulic cylinder 4400 is coupled to the coupling rod 4210 provided on both front sides of the loading box 4200. [ The rear end of the hydraulic cylinder 4400 is hinged to the rear side of the frame 4300, that is, the front side of the support member 4310. The rod 4410 is pulled out by the operation of the hydraulic cylinder 4400 to push the coupling rod 4210 and the rear end of the hydraulic cylinder 4400 is hinged to the frame 4300, It naturally rotates upwards according to the drawing. The front portion of the loading box 4200 is rotated upward about the shaft 4320, so that the front portion of the loading box 4200 is upwardly inclined upward. On the contrary, when the rod 410 is pulled by the hydraulic cylinder 4400, the loading box 4200 can return to its original position.

Next, the control unit 4500 is installed apart from the frame 4300 and connected to the hydraulic cylinder 4400 by a hydraulic line to control the operation of the hydraulic cylinder 4400. The control unit 4500 can automatically control the hydraulic cylinder 4400 according to the pressure applied to the hydraulic cylinder 4400 by the load of the object placed on the pallet P of the loading box 4200. [

A limit switch 4510 is provided on the front side of the support member 4310 so that the control unit 4500 can effectively control the hydraulic cylinder 4400. The control unit 4500 detects the upward rotation maximum value of the rod 4410, . A first sensor 4530 is installed on the upper side of the support member 4310 so that the pallet P accommodated in the pallet 4200 can be detected and sent to the control unit 4500. In addition, a second sensor 4550 is provided in front of the frame 4300 to detect an object interfering with the entrance / exit of the loading box 4200 and send the object to the control unit 4500.

It may be desirable to further provide a buffer unit 4600 between the shipping unit 4110 and the loading box 4200 so that the dropped object can be dropped into the loading bin 4200 while being buffered.

This buffer unit 4600 includes a buffer plate 4610, an elastic plate 4630, and an elastic means 4650. The buffer plate 4610 is connected to a horizontal axis 4615 rotatably installed in the lower part of the shipment part 4110 and is rotatable around the horizontal axis 4615. The buffer plate 4610 is rotatable around the horizontal axis 4615, The bent portion 4611 is formed. The elastic plate 4630 is provided on the inner surface of the buffer plate 4610 by applying an elastic material such as rubber. Finally, the elastic means 4650 vertically connects the lower side of the shipment portion 4110 and the connecting rod 4613 provided on the outer surface of the bent portion 4611 so that the object collides with the elastic plate 4630 while falling down So that the buffer plate 4610 is rotated downward about the horizontal axis 4615 to give an elastic force capable of returning to its original position. The elastic means 4650 is preferably a coil spring.

The operation of the automatic loading unit 400 configured as described above will be described in detail.

The pallet P is placed inside the loading box 4200 using a transportation means such as a forklift. When the transportation means moves away from the loading box 4200, the control unit 4500 operates the hydraulic cylinder 4400 by the detection signals of the first sensor 4530 and the second sensor 4550.

As a result, the load 4410 of the hydraulic cylinder 4400 is drawn out, so that the front portion of the loading box 4200 is upwardly inclined. When the upper surface of the hydraulic cylinder 4400 is caught by the limit switch 4510 as the rod 4410 is pulled out, the control unit 4500 stops the operation of the hydraulic cylinder 4400 and fixes the loading box 4200.

Thereafter, the object is loaded on the pallet P while being buffered by the buffer unit 4600 in the shipping section 4110 and then dropped. As the pallet P is inclined upward, the pallet P is also tilted so as to be brought into close contact with the rear surface of the pallet 4200 so that the falling pallet P is tilted from the rear side of the lower surface of the pallet P So that the internal space of the pallet P can be maximally utilized.

When the object is loaded on the pallet P and the hydraulic cylinder 4400 receives a certain pressure due to the load of the loading box 4200, the controller 4500 draws the load 4410 by a predetermined length to lower the loading box 4200 . If the hydraulic cylinder 4400 receives the preset maximum pressure while repeating this process several times, the loading box 4200 can return to its original position. When the loading box 4200 is returned, the pallet P is transported to the destination by using the transportation means so that the alarm sound can be generated.

It will be apparent to those skilled in the art that various modifications, substitutions, and alterations can be made hereto without departing from the spirit and scope of the present invention as defined by the appended claims. It will be possible. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention only as well as the appended claims. It is not. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

H1: First heat treatment section
H2: quenching section
H3: second heat treatment section
100: driving drum portion
200:
300: Lift unit
400: Automatic loading unit

Claims (6)

A first heat treatment section for first heating the supplied object,
A quenching zone in which the object heated first in the first heat treatment zone is immersed in the oil in the storage tank and cooled;
A second heat treatment section for secondarily heating the quenched object in the quenching section,
A first conveyor installed in each of the first heat treatment section and the second heat treatment section for conveying the object,
A first driving unit including a driving drum disposed on one side of the first conveyor and a driven drum disposed on the other side of the first conveyor,
A second conveyor installed in the quenching section for conveying the object,
A second drive unit including a drive circuit part provided on one side of the second conveyor and a driven rotation part provided on the other side of the second conveyor,
And a lift unit for supplying the object to the first heat treatment section,

The driving drum unit
A main drum which is axially rotated by receiving a driving force,
And an auxiliary drum provided on both sides of the main drum and having a plurality of coating rollers installed along the outer periphery thereof,
A first conveyor is interposed between the main drum and the auxiliary drum to actuate the first conveyor,

The driven-
Center shaft,
A plurality of discs disposed along the longitudinal direction of the center shaft,
And a plurality of contact rods disposed along the outer periphery of each of the discs,
The second conveyor is brought into close contact with the discs and contact rods of each of the rotors,

The lift unit includes:
A base frame installed behind the first conveyor in the first heat treatment zone,
A support frame installed at an upper portion of the base frame and having a height relatively higher than a height of a first conveyor in the first heat treatment section,
A bridge disposed between the support frame and the first conveyor in the first heat treatment zone and inclined downward toward the first conveyor in the first heat treatment zone,
A receiving box rotatably coupled to the rotating shaft to receive the pallet on which the objects are loaded,
The cylinder tube side is rotatably coupled to each of the front side of the base frame and the rod side is rotatably engaged with the receiving case so that the rod is pulled out, And a hydraulic cylinder for lifting the vessel to a downward slope toward the bridge. The method according to claim 1,
In the shipment part in front of the second conveyor in the second heat treatment section,
A loading box 200 for receiving a pallet on which a subject subjected to heat treatment falls and is loaded,
A frame on which a support member for rotatably supporting both rear upper and lower sides of the loading box is installed,
And a hydraulic cylinder coupled to the front end of the load on both sides of the loading box and having a rear end rotatably coupled to both rear sides of the frame for upwardly rotating the loading section about an axis to lift the loading box in an inclined manner Wherein the automatic loading unit is installed. 3. The method of claim 2,
Wherein a buffer unit is further provided between the ship and the load box to guide the dropped object to be dropped into the load box while buffering the dropped object. The method of claim 3,
The buffer unit includes:
A buffer plate rotatably coupled to the shipment portion and having bent portions formed on both sides thereof so as to prevent falling of the object to be dropped,
An elastic plate provided on the inner surface of the buffer plate,
And elastic means for connecting connection rods provided on both sides of the shipment portion and the outer surface of the bent portion. The method according to claim 1,
The bridge includes:
And a plurality of sidewall conveying rollers are provided between the respective angles. The plurality of sidewall conveying rollers are disposed to face each other in the horizontal direction, A left connection frame and a right connection frame, each of which has a front end connected to a rear upper side of the first conveyor,
A lower conveying roller provided between the left connecting frame and the lower side angle of the right connecting frame along a longitudinal direction,
A casing installed in the upper part of the lower conveying roller on the rear side of the left connection frame and the right connection frame so that the rods of the pair of pneumatic cylinders are taken in and out,
And a push head connected to the rod of each of the pneumatic cylinders and having a front end surface concave. 6. The method of claim 5,
On the lower side of the bridge,
A dust collecting skirt for covering the lower portion of the bridge,
A dust collecting case communicating with the dust collecting skirt by a tube,
A filter unit installed in an upper portion of the dust collecting case so as to be able to draw in and out,
A discharge pipe communicating with a lower portion of the dust collecting case,
And a dust collecting unit including a suction fan installed on the discharge pipe.

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