KR20130073332A - Hot air circulation type parts drying device - Google Patents

Abstract

PURPOSE: A device for drying a component in a hot air circulating manner is provided to improve the efficiency of the device by allowing an exit of a discharging hole formed in a lateral wall path of the device to open or close with a control plate. CONSTITUTION: A device for drying a component in a hot air circulating manner comprises a main body (4), a housing (30), a heater (32), and a blower (34). A hinged door (38) is arranged on an upper part of the main body in a transverse direction and is installed to open and close. An operating unit (40) supplying an operational force to open and close is connected to one side of the hinged door. A drying rack fixing a component is arranged inside the main body and drawn in or out by a crane through the hinged door.

Description

Technical Field [0001] The present invention relates to a hot air circulation type parts drying device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hot air circulating part dryer, and more particularly, to a hot air circulating part drying machine, in which a folding type door is installed at an upper end of a drying device, By realizing the structure to be opened and closed by the operating part, the convenience of work for drying the parts is improved remarkably. Further, in order to enable only a specific part of the machine parts fixed on the drying table to be dried, the structure of opening and closing the outlet of the discharge hole formed in the side wall passage of the drying device by the regulating plate is realized, To a hot air circulating part drying apparatus.

Generally, a drying apparatus is a device for drying machine parts while circulating air heated by a heater to an air blower. In the drying apparatus, a drying table for fixing various components is used. Such a drying table is conveniently and quickly There is a need for structural improvement measures to enable entry and entry.

On the other hand, according to the conventional technology, KR 10-2009-0085750 A 2009.08.10. 1, a main body 10 is constructed by mounting a door which can be opened and closed, and a chamber 30 in which a plurality of air vents are formed is installed in the main body 10 , And three shelves (36) for accommodating parts are installed in the chamber (30) at different heights.

An entrance portion 32 and an exhaust portion 34 are formed on both sides of the chamber 30 and a heating portion 50 and a blowing fan 40 are installed below the chamber 30.

When the blowing fan 40 is operated after closing the door after the components are inserted into the shelf 36 of the main body 10 constructed as described above, the air is heated while passing through the heating unit 50, The air is passed through the inlet 32, the chamber 30, the shelf 36, the chamber 30 and the exhaust 34 in this order, and then the air is circulated again by the blowing fan 40 I repeat.

When the air is circulated and heated in the heating unit 50 and supplied to the shelf 36 as described above, the components in the shelf 36 are dried by heat.

After that, the door of the main body 10 is opened and the parts in the shelf 36 are taken out, and then a new part is put into the shelf 36 and dried.

Since the conventional technique as described above is a method of opening the door of the main body 10 and loading a large amount of parts into the shelf 36 and drying it, the working time is delayed in the process of rapidly loading and unloading a large number of parts. There is a problem that the workability for drying the parts is remarkably lowered.

Another problem is that when the part is mounted on the shelf 36 and simply dried, there is an inconvenience when only a specific part of the part is intended to be dried, so that the functionality of the dryer is significantly deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and its object is as follows.

First, a folding type door is installed at the upper end of the drying apparatus to open and close the drying unit in which the machine parts are fixed to the inside of the drying apparatus. And to improve the usability considerably.

Second, the structure of opening and closing the outlet of the discharge hole formed in the side wall passage of the drying apparatus by the regulating plate is realized in order to dry only a specific part of the machine parts fixed to the drying stand, thereby dramatically improving the function of the drying apparatus I am trying to make it.

The present invention is characterized in that a side wall passage (6) and a discharge hole (20) are formed in a side wall (8) while being formed in a box shape with an open top end, and a bottom passageway (10) and a return pipe (4);

A housing 30 disposed on the other side of the side wall 8 of the main body 4 and communicating with the side wall passage 6;

A heater 32 installed inside the housing 30 to heat air passing therethrough;

And a blower (34) connected to the housing (30) with an outlet through a duct (36) and an inlet connected to the bottom passage (10)

A foldable door 38 is provided at the upper end of the main body 4 so as to be openable and closable while being horizontally arranged and an operation part 40 for providing opening and closing force is connected to one side of the foldable door 38 And a drying stand 18 for fixing the mechanical parts 19 is disposed in the main body 4 and is entered and advanced by the crane through the folding type door 38. [

Further, the folding type door (38)

A right door 48 to which the first and second doors 42 and 44 are coupled by the hinge pin 46,

A left door 56 to which the third and fourth doors 50, 52 are coupled by a hinge pin 54,

A roller 58 installed on both sides of the front side of the first and third doors 42 and 50,

A rail 60 fixedly installed longitudinally on both sides of the upper portion of the main body 4 while movably coupling the roller 58 therein,

And a rotary shaft 62 installed on both sides of the rear of the second and fourth doors 44 and 52 and connected to the actuating part 40 through the rail 60.

In addition, the actuating part (40)

A link 70 which is coupled to the rotation axis 62 of the left and right doors 48 and 56 and which connects the pin 68 to the other end,

A support bar 72 connected to the long holes 74 formed on both sides of the pins 68,

And a cylinder 76 fixed to the side wall 8 vertically while coupling the rod 78 to the center of the support bar 72.

The effects of the present invention are as follows.

First, since the folding type door 38 is provided at the upper end of the main body 4 of the drying apparatus 2 and the structure is opened and closed by the operating part 40, a large amount of mechanical parts 19, The fixed drying rack 18 can be quickly advanced into and out of the drying apparatus 2, so that the convenience of the drying operation is remarkably improved.

Secondly, the outlet of the discharging hole 20 formed in the side wall passage 6 of the drying device 2 is opened and closed by the throttle plate 22. Therefore, the mechanical part 19 fixed to the drying table 18, It is possible to dry only a specific part of the drying apparatus 2 with hot air, thereby remarkably improving the functionality of the drying apparatus 2.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view of a dryer showing a prior art. Fig.
2 is a perspective view of a dryer as a first embodiment of the present invention;
3 is a front sectional view of a dryer, which is a first embodiment of the present invention.
4 is a plan sectional view of a dryer according to a first embodiment of the present invention.
5 is a partial perspective view of a dryer according to a first embodiment of the present invention;
6A, 6B and 6C are views showing the state of use of the throttle plate according to the first embodiment of the present invention.
7A, 7B and 7C are opening and closing states of a door, which is a first embodiment of the present invention.
8 is a perspective view of the operating part of the dryer, which is the second embodiment of the present invention.
9A and 9B are perspective views of an operating part of a dryer according to a third embodiment of the present invention.
10 is a perspective view of the operating part of a dryer according to a fourth embodiment of the present invention.

2 to 7, a drying apparatus 2 (see FIG. 3) is provided with a box-shaped main body 4 having an open upper end A side wall 8 having a side wall passage 6 formed therein is arranged in a rectangular shape in the main body 4 and a floor passage 10 is formed in the bottom of the main body 4, (10), two return pipes (12) as air passages are formed in an upward direction with an interval therebetween.

A support bar 14 is vertically connected to the upper portion of each of the recovery pipes 12 and the swash plate 16 is welded and fixed to the upper end of the support bar 14 in an inclined state, To prevent the water drop falling from the machine component (19) fixed to the water pipe (18) from flowing into the recovery pipe (12).

The side walls 8 arranged in a quadrangular shape as described above are formed by connecting the side wall passages 6 formed therein and at the same time, a plurality of discharge holes 20, which are air passages, And is formed as a horizontally long slot.

A throttle plate 22 is installed on the inner surface of each side wall 8 where the discharge hole 20 is located. The throttle plate 22 is provided with guide holes 24 And a fixing screw 28 is coupled to the elongated hole 26 so as to be connected to the side wall 8 at a predetermined distance Respectively.

When the guide hole 24 of the throttle plate 22 coincides with the discharge hole 20, air is allowed to pass therethrough, and the guide hole 24 And the discharge hole 20 do not coincide with each other, the flow of air is cut off.

A housing 30 is provided outside the side wall 8 located on the other side of the main body 4 and communicates with the side wall passage 6. A heater 32 for heating air is installed inside the housing 30 Respectively.

The outlet of the blower 34 is connected to the housing 30 by a duct 36 and the inlet of the blower 34 is connected to the bottom passage 10.

A sealing frame 51 is fixedly installed on the inner surface of the upper portion of the main body 4 to prevent external air from flowing into the upper surface of the main body 4. A folding type door 38 Type door 38 is fixed to the side wall 8 while being connected to an operation part 40 for providing an opening and closing action force to one side of the foldable type door 38. [

At this time, in order to prevent hot air from leaking out between the folding type door 38 and the main body 4, the folding type door 38 is installed to be aligned with the upper end of the main body 4, 51 are located below the height of the foldable door 38 from the upper end of the side wall 8.

The folding type door 38 installed as described above includes a right door 48 to which the first and second doors 42 and 44 are coupled by the hinge pin 46 and a right door 48 to which the third and fourth doors 50 and 52 are connected by the hinge pin 46. [ A left door 56 coupled to the front door 54 and a roller 58 installed on both front sides of the first and third doors 42 and 50, A rail 60 disposed longitudinally on both sides of the upper end of the main body 4 and fixedly mounted on the closed frame 51 and a rail 60 installed on both sides of the rear of the second and fourth doors 44 and 52, And a rotary shaft 62 connected to the operation part 40 through the rotary shaft 62.

At this time, guide grooves 66 are formed on both sides of the first and second doors 42 and 50 so that the support bars 64 of the drying table 18 can be positioned. The actuating part 40 is connected to the rotary shaft 62 projecting through the rail 60 and the upper end of the side wall 8 located at one side.

The operating portion 40 is connected to the rotary shaft 62 of the left and right doors 48 and 56 and is connected to the pin 68 at the other end thereof, A support bar 72 is connected to both ends of the support bar 70 by engaging the pins 68. At this time, an elongated hole 74 is formed at both ends of the support bar 72 so that the pin 68 can flow.

An upper end portion of a rod 78 of a cylinder 76 that provides an acting force is coupled to a center of the support bar 72. The cylinder 76 is vertically installed and is supported by a bracket 80, (8).

Not shown: Hook (81)

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

First, a large number of cleaned mechanical parts 19 (see FIG. 7C) are fixed to the drying rack 18 and the cylinder (not shown) of the operating part 40 provided in the main body 4 76 to advance the rod 78, the support bar 72 coupled to the tip of the rod 78 lifts up the pin 68 in an upward direction.

The link 70 is rotated about the rotation axis 62 and the rotation shaft 62 rotates about the rotation axis 62. At the same time, the pin 68 is moved inside the slot 74 and pushes up the end of the link 70, Are rotated by the link 70, and the second and fourth doors 44 and 52 of the left and right doors 48 and 56 are rotated in the rotating direction.

At this time, the second and fourth doors 44 and 52 are separated from the sealing frame 51.

The hinge pins 46 and 54 coupled to the second and fourth doors 44 and 52 are simultaneously lifted upward to lift a part of the first and third doors 42 and 50 from the closing frame 51 .

At this time, the angle at which the second and fourth doors 44 and 52 rotate about the rotation axis 62 and the angle at which the first and third doors 42 and 50 are lifted are the same, The front ends of the first and third doors 42 and 50 are moved to the outside of the main body 4 due to the action of the second and fourth doors 44 and 52, The rollers 58 located on both sides are moved horizontally along the rail 60.

Accordingly, the front portions of the first and third doors 42 and 50 are horizontally moved from the upper end of the main body 4 by the rollers 58, whereby the left and right doors 48 and 56 7a, the open state is established as shown in Fig. 7b.

In the above state, the drying stand 18 in the standby state descends into the inside of the main body 4 through the unillustrated crane as shown in FIG.

The support bar 72 is lowered and pulls the pin 68 downward by transmitting an operation command to the cylinder 76 again so as to return the rod 78. As a result, The link 70 moves in the direction of the long hole 74, and at the same time, the link 70 rotates about the rotation axis 62 in the reverse direction.

Accordingly, when the second and fourth doors 44 and 52 of the left and right doors 48 and 56 are returned to the closed frame 51 by the rotating shaft 62 rotating in the reverse direction as described above, The hinge pins 46 and 54 coupled to the first and second doors 44 and 52 are simultaneously moved downward to partially down the first and second doors 42 and 50.

At this time, the angle at which the second and fourth doors 44 and 52 are reversely rotated about the rotation axis 62 and the angle at which the portions of the first and third doors 42 and 50 are simultaneously downward are the same, The front end portions of the first and third doors 42 and 50 move toward the inside of the main body 4 and are brought into contact with each other due to the action of the second and fourth doors 44 and 52. At the same time, The rollers 58 located on both sides of the rollers 50 move horizontally along the rails 60 and return to their original positions.

When the left and right doors 48 and 56 are closed in a state where the drying rack 18 enters the inside of the main body 4 as described above, the holding rods 64 of the drying rack 18 are closed And are located inside the guide grooves 66 of the doors 42 and 50.

The washing water used in the washing process remains in the machine parts 19 fixed to the drying rack 18 in the above state. Part of the washing water falls down from the drying table 18 to the floor, and at the same time, (16), and then flows to one side and falls to the floor.

At this time, the swash plate 16 serves to prevent wash water falling from the mechanical parts 19 from flowing into the recovery pipe 12. [

Subsequently, when an operating command is transmitted to the blower 34 and the heater 32 in the above-described state, air is introduced into the housing 30 through the duct 36 by the blower 34, And then the heated air passes through the housing 30 in the form of warm air to enter the side wall passage 6 formed in the side wall 8 of the main body 4, To the side wall passage (6) formed along the side wall (8) of the main body (4).

The hot air is sequentially passed through the discharge hole 20 formed in the side wall 8 and the guide hole 24 formed in the throttle plate 22 so that the mechanical parts of the drying table 18 located inside the main body 4 (19), whereby the washing water remaining in the mechanical component (19) is evaporated by the warm air.

At this time, the hot air is simultaneously discharged from the inner surface of the main body 4 to the machine component 19 side.

As described above, the hot air discharged to the machine component 19 is converted into a low-temperature form by heat exchange, and then the hot air is downwardly moved to the blower 34 along the bottom passage 10 through the return pipe 12 The circulation process to be supplied again is repeated.

6A, 6B, and 6C, the fixing screw 28 located on the side wall 8 of the corresponding position is unscrewed to unroll the adjusting plate (not shown) 22 so that the guide hole 24 blocks the passage of the discharge hole 20 and then the fixing screw 28 is fastened to the throttle plate 22 by upwardly moving the throttle plate 22 upward, Is fixed to the side wall (8).

Therefore, as described above, the hot air supplied while being dispersed in the side wall passage 6 of the main body 4 is moved to the other discharge hole 20 side by bypassing the portion where the discharge hole 20 is blocked, and at the same time, And is discharged to the machine component 19 side.

Since the folding type door 38 is in close contact with the sealing frame 51, a part of the warm air supplied to the inside of the main body 8 passes through the discharge hole 20 as described above, At the same time, part of the warm air escapes to the floor passage 10 while being downward to the side of the return pipe 12 to which the suction force of the blower 34 is applied.

Meanwhile, referring to FIG. 8, the operation unit 82 constituting the second embodiment of the present invention is as follows.

The actuator 82 rotates on the sidewall 8 while being geared to the driven gear 84 coupled to the rotational shafts 62 of the left and right doors 48 and 56, respectively. Two idler gears 86, which are possibly installed, a prime gear 88 that is geared to the idle gear 86, and a bracket 80 to the side wall 8 while coupling the prime gear 88 to the shaft. It consists of a motor 90, which is fixedly installed.

Referring to the operation of the operating unit 82 which is a second embodiment of the present invention configured as described above are as follows.

First, when the motor 90 operates to provide rotational power, the rotational power is transmitted to the idler gear 86 and the driven gear 84 in this order to rotate the rotary shaft 62, At this time, when the motor 90 is operated and the rotary shaft 62 is rotated in the forward and reverse directions, the left and right doors 48 and 56 are opened and closed as described above.

Meanwhile, referring to FIGS. 9A and 9B, the operation unit 100 constituting the third embodiment of the present invention is as follows.

The operation unit 100 is pinions 102 and 104 coupled to the rotation shafts 62 of the left and right doors 48 and 56, respectively, and protruding pins 107 to the side while being geared to the upper side of the left pinion 102. Left door 106 having a) and stepped to the upper side of the right pinion 104, stepped right door double-sided rack 108 of the stepped shape having a protruding pin 109 on the side, and the left It is disposed between the door rack 106 and the right door double-sided rack 108 and the driving gear 110 for gear coupling and the drive gear 110 is coupled to the rotating shaft to provide power to the side wall 8 with a bracket ( 80 is fixed to the motor 112, which is installed.

At this time, a rectangular pipe-shaped body frame 114 is fixed to the front side of the bracket 80 in the transverse direction, and the body frame 114 is provided with pinions 102 and 104 and a driving gear 110, A guide hole 116 is formed longitudinally in both side walls of the body frame 114 to engage the projections 107 and 109 of the left side door 106 and the right door double side rack 108 .

Referring to the operation of the operating unit 100 of the third embodiment of the present invention configured as described above are as follows.

First, when the motor 112 operates to provide rotational power, the rotational power is transmitted in the order of the driving gear 110, the left side door 106, the right door double-sided rack 108, and the pinions 102 and 104 Thereby rotating the rotating shaft 62.

At this time, when the motor 112 is operated and the rotation shaft is rotated in the forward and reverse directions, the left side door 106 and the right door double-sided rack 108, which are engaged with the driving gear 110, The projecting pins 107 and 109 are horizontally moved along the guide holes 116 and the pinions 102 and 104 and the rotating shaft 62 are rotated in the forward and reverse directions .

Therefore, the left and right doors 48 and 56 are opened and closed as described above.

Meanwhile, referring to FIG. 10, the operation unit 120 constituting the fourth embodiment of the present invention is as follows.

The operation unit 120 includes a pinion 122 coupled to the rotation shafts 62 of the left and right doors 48 and 56, and a left door rack 124 geared to the left pinion 122. And the right door rack 126 geared to the right pinion 122 and the left and right door racks 124 and 126 are fixed to the side wall 8 with the brackets 80, respectively. The left and right cylinders are composed of (128,130).

Referring to the operation of the operating unit 120 of the fourth embodiment of the present invention configured as described above are as follows.

First, when the left and right cylinders 128 and 130 are operated and the rod is moved forward and backward, the action force of the rod is transmitted to the left and right side grinders 124 and 126 and the pinion 122, At this time, when the rotary shafts 62 are rotated in the forward and reverse directions while the left and right hooks 124 and 126 are moved back and forth by the rod, the left and right doors 48 and 56 are opened , Is abolished.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the disclosed embodiments. Those skilled in the art will appreciate that various modifications, It will be understood that various modifications and changes may be made without departing from the scope of the present invention.

2: drying device 4:
6: side wall passage 8: side wall
10: bottom passage 12: return pipe
14: support rod 16: swash plate
18: Hanger 19: Mechanical parts
20: discharge hole 22: throttle plate
24,116: guide ball 26: long hole
28: fixing screw 30: housing
32: heater 34: blower
36: Duct 38: Folding door
40, 82, 100, 120: operating part 42: first door
44: second door 46,54: hinge pin
48: right door 50: third door
51: sealing frame 52: fourth door
56: left door 58: roller
60: rail 62:
64: Support rod 66: Guide groove
68: pin 70: link
72: support bar 74: long hole
76: cylinder 78: rod
80: Bracket 84: driven gear
86: idle gear 88, 110: idle gear
90, 112: motors 102, 104, 122: pinion
106,124: Left side diagram 107,109: Projection pin
108: right door double-sided rack 114: body frame
126: right side, and anchor 128: left cylinder
130: right cylinder

Claims (12)

A main body 4 formed in a box shape having an upper end portion formed therein and having a side wall passage 6 and a discharge hole 20 in the side wall 8 and a bottom passage 10 and a recovery pipe 12 formed at a bottom thereof;
A housing 30 disposed on the other side of the side wall 8 of the main body 4 and communicating with the side wall passage 6;
A heater 32 installed inside the housing 30 to heat air passing therethrough;
In the hot air circulating component drying apparatus consisting of; a blower (34) connected to an outlet through a duct (36) to the housing (30), and an inlet connected to a bottom passage (10).
The upper portion of the main body 4 is provided with a folding door 38 in a transverse direction so that opening and closing is possible, and one side of the folding door 38 is connected to an operation part 40 providing an opening and closing force. Hot air circulating component drying apparatus, characterized in that the main body (4) to enter and exit by the crane through the folding door (38) while the drying table (18) for fixing the mechanical parts (19) is arranged. The method of claim 1,
The foldable door (38)
A right door 48 to which the first and second doors 42 and 44 are coupled by the hinge pin 46,
A left door 56 to which the third and fourth doors 50, 52 are coupled by a hinge pin 54,
A roller 58 installed on both sides of the front side of the first and third doors 42 and 50,
A rail 60 fixedly installed longitudinally on both sides of the upper portion of the main body 4 while movably coupling the roller 58 therein,
And a rotary shaft (62) installed at both ends of the second and fourth doors (44, 52) and connected to the operation part (40) through the rail (60) . 3. The method of claim 2,
Hot air circulating component drying, characterized in that guide grooves 66 are formed on both sides of the first and third doors 42 and 50 facing each other so that the holding rods 64 of the drying table 18 can be positioned. Device. The method of claim 3, wherein
Wherein a sealing frame (51) for blocking the flow of hot air is fixedly installed on the inner surface of the side wall (8), and a rail (60) is fixed to the upper part of the sealing frame (51) Device. The method of claim 1,
On the inner surface of the side wall (8) of the main body (4), a throttle plate (22)
A guide hole 24 having the same size as the discharge hole 20 is formed in the throttle plate 22,
On the upper and lower portions of the throttling plate 22, a long and low adjustment slot 26 is formed,
The long hole 26 is fastened to the side wall 8 while being coupled with a fixing screw 28,
When the guide holes 24 of the throttle plate 22 coincide with the discharge holes 20 and the guide holes 24 of the throttle plate 22 do not coincide with the discharge holes 20, Wherein the hot air circulation type component drying apparatus is a hot air circulation type component drying apparatus. 6. The method according to claim 1 or 5,
The swash plate 16 is spaced apart from the upper end of the return pipe 12 while being connected to the swash plate 16 by a support rod 14. The swash plate 16 is provided so as to prevent water droplets falling from the drying stand 18 from flowing into the bottom passageway 10 Wherein the hot air circulation type component drying apparatus comprises: The method according to claim 6,
The hot air circulated while being supplied into the main body 4 by the blower 34,
The hot air is simultaneously discharged to the inside through the discharge hole 20 and the guide hole 24 from the four sides of the side wall 8 of the main body 4 and at the same time the hot air flows downwardly into the return pipe 12 provided in the bottom passage 10 Wherein the heat exchanger circulates the hot air circulating part. 3. The method of claim 2,
The actuating part (40)
A link 70 which is coupled to the rotation axis 62 of the left and right doors 48 and 56 and which connects the pin 68 to the other end,
A support bar 72 connected to the long holes 74 formed on both sides of the pins 68,
And a cylinder (76) fixed to the side wall (8) by a bracket (80) while the rod (78) is engaged with the center of the support bar (72). 3. The method of claim 2,
The operation unit 82,
A driven gear 84 coupled to the rotary shaft 62 of the left and right doors 48 and 56,
An idle gear 86 rotatably mounted on the side wall 8 while being meshed with the respective driven gears 84,
A driving gear 88 that meshes with the idle gear 86,
And a motor (90) fixed to the side wall (8) by a bracket (80) while coupling the driving gear (88) to the shaft. 3. The method of claim 2,
The operation unit 100,
Pinions 102 and 104 respectively coupled to the rotating shafts 62 of the left and right doors 48 and 56,
A left side sun gear 106 which is engaged with the upper side of the left pinion 102 and has a projecting pin 107 on a side surface thereof,
A stepped right door double-sided rack 108 which is meshed with an upper side of the right pinion 104 and has a projecting pin 109 on a side surface thereof,
A driving gear 110 which is disposed between the left side door 106 and the right door double side rack 108 and meshes with each other,
And a motor (112) fixed to the side wall (8) by a bracket (80) while coupling the driving gear (110) to a rotating shaft to provide power. 11. The method of claim 10,
A body frame 114 is fixed to the front of the bracket 80 in a transverse direction and the body frame 114 is rotatably coupled to the body frame 114 with pinions 102 and 104 and a driving gear 110 disposed therein, A guide hole 116 is formed in both sides of the body frame 114 for coupling the left side door 106 and the projecting pins 107 and 109 of the right door double side rack 108 in the longitudinal direction. Drying equipment for parts. 3. The method of claim 2,
The operation unit 120,
A pinion 122 coupled to the rotation axis 62 of the left and right doors 48 and 56,
A left side sun gear 124 meshing with the left pinion 122,
A right side derailleur 126 meshing with the right pinion 122,
And left and right cylinders (128, 130) fixed to the side wall (8) by a bracket (80) while coupling the left and right side rake (124, 126) to the rod front end portion.

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