Centrifugal drying method and centrifugal dryer

Abstract

Provided is a centrifugal drying method for an object to be dried (5) having a plurality of stopper holes (5b, 5d), the method comprising: arranging the object to be dried (5) on a rotary table (15) in a first posture (6) in which the opening of a first stopper hole (5b) of the plurality of stopper holes (5b, 5d) faces downward; and rotating the object to be dried (5) in the first posture (6) together with the rotating table (15) around a rotating shaft (1) extending in the vertical direction.

Description

Technical Field

[0001] The invention relates to a centrifugal drying method of a drying object with a stop hole and a centrifugal dryer. Background Art

[0002] A scheme for a cleaning and dehydrating device has been proposed, which uses air and water emitted from an air nozzle and a water spray nozzle to clean a workpiece, wherein the workpiece is fixed to a rotating worktable arranged in a cleaning chamber with a clamp, and the centrifugal force of the rotating worktable is used to dehydrate the workpiece (Japanese Patent Gazette No. 10-128524. Hereinafter referred to as Patent Document 1).

[0003] According to the cleaning and dehydration device of Patent Document 1, after cleaning, the tapping holes of the workpiece are blown with air, and the rotary table is rotated at high speed for dehydration. In order to blow air, compressed air is required, which requires a large power. When compressed air is supplied from a factory, the power consumption increases due to pressure loss. Summary of the invention

[0004] The object of the present invention is to dehydrate the interior of a stopper hole of a workpiece by centrifugal drying.

[0005] A first aspect of the present invention is a centrifugal drying method for a drying object having a plurality of stop holes, comprising:

[0006] placing the drying object on the rotating table in a first posture with an opening of a first stopper hole among the plurality of stopper holes facing downward; and

[0007] The drying object in the first posture is rotated together with the rotating table around a rotation axis extending in the vertical direction.

[0008] A second aspect of the present invention is a centrifugal dryer for centrifugally drying a drying object having a plurality of stop holes, comprising:

[0009] A rotating table that rotates around a rotation axis extending in the up-down direction;

[0010] A tilting movable worktable, which is disposed on the rotating table and is tilted and movable around a tilting movable axis extending in the horizontal direction; and

[0011] A tilting movement device, wherein the tilting movement device can tilt the drying object around the tilting movement axis in a first posture and a second posture, wherein the first posture is a posture in which the opening of a first stop hole among the plurality of stop holes faces downward, and the second posture is a posture in which a second stop hole whose opening faces a direction different from that of the first stop hole faces downward.

[0012] A third aspect of the present invention is a centrifugal drying method for a drying object having a plurality of stop holes, comprising:

[0013] The drying object is placed on a rotating table in a first posture with an opening of a first stop hole among the plurality of stop holes facing downward;

[0014] causing the drying object in the first posture to rotate together with the rotating table around a rotation axis extending in the vertical direction;

[0015] The tilt moving device is moved to the connection position, the fourth coupling of the tilt moving device is connected to the third coupling of the tilt moving table, and the second push rod is moved to push the clamping shaft into the release position inside the hollow tilt moving shaft, and the locking body is pulled out from the housing body of the rotating table, so that the posture of the tilt moving table can be rotated freely; and

[0016] The tilting moving device moves to the retracted position, the fourth coupling leaves the third coupling, and the clamping shaft moves to the holding position by the elastic force of the elastic body, and the locking body is inserted into the accommodating body to support the posture of the tilting moving worktable.

[0017] Below contains vertically downwards.

[0018] The rotating table can rotate while maintaining the tilting moving table in the first posture, the second posture, or the third posture.

[0019] The tilting movement angle is, for example, 180 degrees or 90 degrees. For example, when the second stopper hole opens in a direction tilted in the first posture, the second posture may also be tilted in a manner that the second stopper hole is vertically downward.

[0020] The tilting device may also include an advancing and retreating device that advances and retreats the support bracket between the retreat position and the connecting position.

[0021] The tilt-movement drive machine may be supported by a support bracket.

[0022] The tilting device tilts the tilting table to a first posture, a second posture, and a third posture. The posture holding unit holds the tilting table in the first posture, the second posture, and the third posture.

[0023] The locking body may also have a plurality of protrusions. The protrusions may, for example, extend radially relative to the tilting movable axis. The housing may also have a plurality of recesses. The housing is fitted with the locking body. The recess may, for example, extend radially relative to the tilting movable axis. The locking body and the housing may also be couplings joined at the cylindrical end faces. The locking body and the housing may be at the end face of a portion of a cylinder centered at the tilting movable axis. The locking body may have convex teeth. The housing may have concave teeth.

[0024] According to the present invention, the interior of the stopper hole of the workpiece can be dehydrated by centrifugal drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a cross-sectional view of the dryer according to the first embodiment.

[0026] Figure 2 It is a top view of the dryer of Embodiment 1.

[0027] Figure 3 This is a perspective view of the coupling according to the first embodiment.

[0028] Figure 4 yes Figure 1 Enlarged view of part IV.

[0029] Figure 5 This is a cross-sectional view showing a state where the tilting table of the first embodiment is tilting.

[0030] Figure 6 yes Figure 1 VI-VI line cross-sectional diagram.

[0031] Figure 7 This is the centrifugal drying test method of Example 1.

[0032] Figure 8 This is the centrifugal drying test method of Example 2.

[0033] Fig. 9 It is a cross-sectional view of the dryer of Embodiment 2.

[0034] Fig.10 yes Fig. 9 Magnified view of the X section.

[0035] Fig.11 It is a cross-sectional view showing a state where the tilting moving table of the second embodiment is tilting.

[0036] Fig.12 yes Fig.11 Enlarged view of Part XII.

[0037] Explanation of symbols

[0038] 1 Rotation axis

[0039] 3 Tilt movement axes

[0040] 5 Drying objects

[0041] 5b, 5d Stop hole

[0042] 15 Rotating table

[0043] 17 Tilt and move the workbench DETAILED DESCRIPTION

[0044] <Implementation Method 1>

[0045] like Figure 1 as well as Figure 2 As shown, the dryer 10 of this embodiment includes a frame 11, a motor 13, a bearing 12, a rotating table 15, a tilting table 17, a tilting device 24, a first coupling 19, a second coupling 31, a posture holding unit 36, a dry air source 47 and a nozzle 49. Figure 1 yes Figure 2 II line cross-sectional diagram. Figure 1 The downward direction is the right direction of the dryer 10 . Figure 1 The right direction is the upward direction of the dryer 10. Figure 1 The direction from the surface of the paper surface toward the back side is the rear direction of the dryer 10 .

[0046] The motor 13 is disposed on the lower surface of the stand 11. The motor 13 is, for example, a PM motor. The motor 13 can stop the rotating table 15 at the original position 91 (see Figure 2 The motor 13 rotates the rotating table 15 at a speed of preferably 200 revolutions per minute or more, more preferably 250 revolutions per minute or more.

[0047] The rotating table 15 has a support shaft 15d, a connecting plate 15a, and side plates 15b and 15c. The support shaft 15d rotates around the rotating shaft 1. The rotating shaft 1 extends in the up-down direction. The connecting plate 15a is arranged on the upper surface of the support shaft 15d and extends in the horizontal direction. The side plates 15b and 15c are arranged at the left and right ends of the connecting plate 15a and extend upward and in the front-back direction.

[0048] The bearing 12 is disposed on the frame 11 and supports the support shaft 15 d.

[0049] The trunnion seats 16a and 16b are respectively arranged at the upper end portions of the side plates 15b and 15c.

[0050] The tilting movable workbench 17 has a top plate 17a, side plates 17b, 17c, ear shafts 17d, 17e and a pin 17f. The top plate 17a extends in the front-back direction and the left-right direction. The side plates 17b, 17c extend upward and in the front-back direction from the left and right ends of the top plate 17a. The ear shafts 17d, 17e are respectively arranged at the upper end portions of the side plates 17b, 17c. The ear shaft 17d is supported by the ear shaft seat 16a and passes through the side plate 15b. The ear shaft 17e is supported by the ear shaft seat 16b. The ear shafts 17d, 17e are arranged with the tilting movable shaft 3 as the center. The pin 17f extends upward from the top plate 17a. The pin 17f supports the workpiece (drying object) 5.

[0051] In the original position 91, the tilting movement axis 3 extends left and right.

[0052] The workpiece 5 has a lower surface 5a, an upper surface 5c, stop holes 5b, 5d and a center of gravity 5e. The lower surface 5a has a stop hole (first stop hole) 5b. The upper surface 5c has a stop hole (second stop hole) 5d. Preferably, the stop holes 5b of the lower surface 5a are more than the stop holes 5d of the upper surface 5c.

[0053] The tilting movement device 24 includes an advancing and retreating guide 25 , a supporting bracket 27 , an advancing and retreating device 28 , and a tilting movement driving machine 29 .

[0054] The advance / retract guide 25 is disposed on the gantry 11 and extends in the left-right direction. The advance / retract guide 25 is, for example, a linear motion guide.

[0055] The support bracket 27 is L-shaped when viewed from the front. The support bracket 27 is disposed on the advance / retract guide 25. The support bracket 27 is guided by the advance / retract guide 25.

[0056] The advancing and retracting device 28 is disposed on the stand 11. The advancing and retracting device 28 is, for example, a fluid cylinder, an electric cylinder, or a servo motor and ball screw mechanism. The advancing and retracting device 28 is connected to the support bracket 27. The advancing and retracting device 28 allows the support bracket 27 to move between the retreat position 93 and the connection position 92 (see Figure 5 When the advance and retreat device 28 moves the support bracket 27 to the retreat position 93, the second coupling 31 leaves the first coupling 19, and the rotating table 15 can rotate freely.

[0057] The tilting movement driving machine 29 has an output shaft 29a. The output shaft 29a may be a hollow shaft. The tilting movement driving machine 29 is, for example, a motor or a rotary cylinder.

[0058] In addition, the tilting driving machine 29 may also be a rod and a cylinder. Here, the rod extends radially from the tilting shaft 3 and is connected to the output shaft 29a. The cylinder extends in the circumferential direction of the tilting shaft 3 and is connected to the rod.

[0059] The first coupling 19 is connected to the trunnion 17d. The second coupling 31 is connected to the output shaft 29a. Figure 3 As shown, the first coupling 19 is cylindrical. The first coupling 19 has a claw 19a and a groove 19b at the end. The claw 19a and the groove 19b are arranged alternately on the circumference. The second coupling 31 has a claw 31a, a groove 31b and an input shaft 31c. When the support bracket 27 is located at the connection position 92, the claw 31a abuts against the groove 19b. Moreover, the claw 19a abuts against the groove 31b. As a result, the first coupling 19 and the second coupling 31 mesh and rotate as a whole.

[0060] The dry air source 47 is, for example, a blower. The dry air source 47 may also generate warm air. The nozzle 49 has a plurality of nozzles 49a. The nozzles 49a are arranged toward the workpiece 5. The plurality of nozzles 49a are, for example, evenly arranged vertically.

[0061] like Figure 4 As shown, the posture holding portion 36 has a plunger chamber 39, a through hole 38, a plurality of ( Figure 6 There are three in the figure) pin hole 40, plunger 37, elastic body 41, release rod 43 and push rod 45.

[0062] The rotating table 15 has a plunger chamber 39. The plunger chamber 39 is cylindrical and extends parallel to the tilting shaft 3. The plunger chamber 39 opens radially inward relative to the rotating shaft 1. The through hole 38 extends coaxially with the plunger chamber 39. The through hole 38 penetrates the plunger chamber 39 from the radially outer side of the side plate 15b.

[0063] The pin hole 40 is disposed on the tilting movable worktable 17. The pin hole 40 extends coaxially with the plunger chamber 39. For example, Figure 6 As shown, the pin hole 40 is arranged at a position rotated 90 degrees at a time with the ear axis 17d as the center.

[0064] The plunger 37 is cylindrical. The plunger 37 passes through the plunger chamber 39 and the through hole 38. The plunger 37 has a pin 37a, a rod 37b, and a head 37c. The pin 37a reciprocates in the plunger chamber 39 in the left-right direction. The pin 37a slides in the plunger chamber 39. The head 37c is arranged radially outside the side plate 15b relative to the rotating shaft 1. The rod 37b connects the pin 37a and the head 37c.

[0065] The elastic body 41 is disposed in the plunger chamber 39 and urges the plunger 37 radially inward. The elastic body 41 is, for example, a compression coil spring. At this time, the plunger 37 is located at the insertion position 94 .

[0066] The release lever 43 has a fulcrum 43a, a force point 43b, and an action point 43c. The fulcrum 43a is arranged at the center of the release lever 43 and is swingably supported by the side plate 15b. The force point 43b is arranged at the upper end of the release lever 43. The force point 43b is, for example, fork-shaped and supports the rod 37b by clamping it. The force point 43b supports the head 37c from the radial inner side, for example. The force point 43b may also have a pin 44. The pin 44 swingably supports the force point 43b and the head 37c or the rod 37b. The action point 43c is arranged at the lower end of the release lever 43.

[0067] The push rod 45 is disposed on the support bracket 27. The push rod 45 protrudes leftward from the support bracket 27. The push rod 45 is columnar.

[0068] Reference Figure 1 , Figure 4 , Figure 5 as well as Figure 6, the method of using the dryer 10 is described.

[0069] like Figure 1 As shown, the operator places the workpiece 5 on the tilting movable table 17. Then, the motor 13 rotates the rotating table 15 to centrifugally dry the workpiece 5. The liquid attached to the lower surface 5a of the workpiece 5, the side surface of the workpiece 5, or the inside of the stopper hole 5b opened on the lower surface is ejected from the workpiece 5 by centrifugal force. During the centrifugal drying, the nozzle 49 may also spray dry air toward the workpiece 5.

[0070] Next, the motor 13 stops the rotating table 15 at the home position 91 .

[0071] Then, if Figure 5 As shown, the advancing and retreating device 28 moves the support bracket 27 to the connection position 92. At this time, the push rod 45 pushes the action point 43c of the release rod 43. Then, the force point 43b overcomes the elastic force of the elastic body 41 and pulls the plunger 37 out of the pin hole 40. In addition, the second coupling 31 is connected to the first coupling 19. As a result, the tilting drive machine 29 can tilt the tilting worktable 17. At this time, the plunger 37 is located at the pull-out position 95.

[0072] Figure 6 The state of the tilting movable table 17 and the workpiece 5 in the first posture 6 is indicated by a solid line. In addition, the state of the tilting movable table 17 and the workpiece 5 in the second posture 7 and the third posture 8 is indicated by a double-dashed line. Here, the second posture 7 is a state in which the tilting movable table 17 is tilted by 180 degrees. The third posture 8 is a state in which the tilting movable table 17 is tilted by 90 degrees. Figure 6 As shown, when the tilting movable table 17 is in the second posture 7 and the third posture 8 , the three pin holes 40 all face the plunger 37 .

[0073] After the tilting driving machine 29 tilts the tilting table 17 to the second posture 7, the advancing and retreating device 28 moves the supporting bracket 27 to the retreat position 93. At this time, the elastic body 41 applies force to the plunger 37 in the direction of inserting into the pin hole 40. Therefore, as the push rod 45 leaves the rotating table 15, the tilt return of the release rod 43 is released, and the plunger 37 is inserted into the pin hole 40. Furthermore, when the supporting bracket 27 advances in the right direction, the second coupling 31 leaves the first coupling 19. Then, the tilting table 17 is supported in the second posture 7. In addition, the second coupling 31 or the push rod 45 retreats to the outside of the rotation radius of the tilting table 17.

[0074] In the first posture 6, the stopper hole 5d (see Figure 1) is opened below the workpiece 5 in the second posture 7. In this state, the motor 13 rotates the rotating table 15 again to centrifugally dry the workpiece 5. Gravity and centrifugal force act on the liquid in the stop hole 5d. As a result, the liquid in the stop hole 5d flies out of the workpiece 5. During centrifugal drying, the nozzle 49 can also spray dry air toward the workpiece 5.

[0075] The motor 13 stops the rotating table 15 at the original position 91. Next, the advancing and retreating device 28 moves the support bracket 27 to the connecting position 92. Next, the tilting device 24 returns the tilting table 17 to the first posture 6. Finally, the advancing and retreating device 28 moves the support bracket 27 to the retreat position 93.

[0076] In addition, the workpiece 5 may be centrifugally dried in the third posture 8 instead of in the second posture 7 . In addition, after centrifugally drying in the second posture 7 , the workpiece 5 may be centrifugally dried in the third posture 8 .

[0077] According to the drying method using the dryer 10 of the present embodiment, when the workpiece 5 is centrifugally dried in the first posture 6, the stopper hole 5b and the side surface opened on the lower surface of the workpiece 5 are dried. However, the stopper hole 5d opened on the upper surface of the workpiece 5 is difficult to dry. Therefore, the workpiece 5 is rotated 180 degrees to be in the second posture 7. Then, the stopper hole 5d is opened at the bottom. When centrifugally drying is performed in this state, the stopper hole 5d is dried. In addition, during centrifugation drying, the nozzle 49 blows dry air onto the workpiece 5, thereby effectively drying the workpiece 5.

[0078] The tilting device 24 reciprocates between the connection position 92 and the retreat position 93. When the tilting device 24 is at the connection position 92, the release lever 43 pulls out the plunger 37 from the pin hole 40, thereby allowing the tilting table 17 to freely tilt and move. Furthermore, when the tilting device 24 is at the connection position 92, the second coupling 31 is connected to the first coupling 19. Thus, the tilting device 24 can tilt and move the tilting table 17.

[0079] When the tilting device 24 moves to the retreat position 93, the release lever 43 returns to its original position due to the elastic force of the elastic body 41, and the plunger 37 is inserted into the pin hole 40. Furthermore, the second coupling 31 is separated from the first coupling 19. As a result, the tilting table 17 is supported by the rotating table 15. The tilting device 24 is separated from the rotating table 15.

[0080] Thus, according to the dryer 10 of this embodiment, the tilting table 17 and the tilting device 24 can be connected or disconnected by a simple mechanism. Moreover, the tilting table 17 can be tilted and moved only when the tilting table 17 is connected to the tilting device 24. In addition, when the tilting device 24 is disconnected from the tilting table 17, the posture of the tilting device 24 is locked.

[0081] In Patent Document 1, the stopper holes on the upper surface of the workpiece 5 need to be blown out by blowing air. According to the present embodiment, by tilting the tilting movable table 17, the stopper holes 5d on the upper surface of the workpiece 5 when set (first posture 6) face downward in the second posture 7. Thus, the stopper holes 5d can be dried by centrifugal drying. Therefore, by spin drying, almost all the stopper holes of the workpiece 5 can be dried. The generation and injection of compressed air require a large amount of electricity, but according to the drying method using the dryer 10 of the present embodiment, the amount of electricity can be reduced.

[0082] Preferably, in the first posture 6, the workpiece 5 is arranged so that the center of gravity 5e of the workpiece 5 is located near the rotation axis 1. The tilting device 24 tilts the tilting table 17 180 degrees around the tilting axis 3. Therefore, in the second posture 7, the center of gravity 5e of the workpiece 5 is also located near the rotation axis 1. Since the center of gravity 5e is located near the rotation axis 1 in both the first posture 6 and the second posture 7, the inertia of the rotating part is reduced.

[0083] When the rotating table 15 rotates, the tilt moving device 24 is separated from the rotating table 15. As a result, the inertia of the rotating table 15 is reduced. In addition, the tilt moving device 24 is connected to the frame 11 through a cable or air piping. In the case where the tilt moving device 24 rotates together with the rotating table 15, it is difficult to connect the cable or air piping. When the rotating table 15 rotates, the tilt moving device 24 is separated from the rotating table 15. Therefore, piping and wiring around the tilt moving device 24 become easy.

[0084] The dryer 10 of this embodiment has a dry air source 47 and a nozzle 49. The nozzle 49 sprays dry air toward the workpiece 5 during centrifugal drying. Thus, the workpiece 5 is effectively dried. The blower consumes less power than the air compressor. If the blower is used as the dry air source 47, the power consumption can be suppressed.

[0085] [Example 1]

[0086] (Test method)

[0087] like Figure 7As shown, a centrifugal drying test of a workpiece 51 was conducted. The workpiece 51 has an internal thread 53. The workpiece 51 rotates around a rotating shaft 1 extending in the vertical direction. The axis of the internal thread 53 intersects with the rotating shaft 1. The internal thread 53 faces outward in the horizontal direction. The distance from the mouth of the internal thread 53 to the rotating shaft 1 is set as a rotation radius 55. The internal thread 53 is filled with tap water and rotated at a constant rotation speed for 24 seconds. Three drying tests were conducted under one condition.

[0088] (Test results)

[0089] The test results are shown in Table 1. Here, "A" means no residual water. "B" means a little residual water at the mouth of the internal thread 53. "C" means residual water at the bottom of the hole or the whole. Speed ​​125min -1 When the above, water can be removed from the internal threads of M10 and M12. Speed ​​175min -1 When the above, water can be removed from the internal thread of M8. Speed ​​250min -1 When using the M6 ​​internal thread, water can be removed.

[0090]

Table 1

[0091]

[0092] [Example 2]

[0093] (Test method)

[0094] like Figure 8 As shown, centrifugal drying of workpiece 57 was performed. Workpiece 57 has internal threads 59 and 61. Workpiece 57 rotates around a rotation axis 1 extending in the up-down direction. Internal thread 59 opens vertically upward. Internal thread 61 opens vertically downward. The distance from the axis of internal threads 59 and 61 to the rotation axis 1 is set as a rotation radius 63. Internal thread 59 is filled with tap water and rotated at a constant rotation speed for 24 seconds. Next, internal thread 61 is filled with tap water and rotated at a constant rotation speed for 24 seconds.

[0095] (Test results)

[0096] The test results of the upwardly directed internal threads 59 are shown in Table 2. The recording method in the table is the same as that in Example 1. Water remained in the internal threads 59 under any conditions.

[0097]

Table 2

[0098]

[0099] The test results for the downward internal thread 61 are shown in Table 3. For M12, the water falls before the workpiece 57 is rotated. This is indicated by "-". For M10, the rotation speed is 80min. -1For M8, the rotation speed is 125min. -1 For M6 and M5, the rotation speed is 200min. -1 For M4, it can be removed at 250min. -1 The water is removed by rotating at a speed of 1.50 rpm.

[0100]

Table 3

[0101]

[0102] In the above sensory test, the inventors found for the first time that the downward-opening stopper hole (internal thread) can be spin-dried. The rotation speed is preferably 200 min -1 More than 250min, more preferably -1 above.

[0103] <Implementation Method 2>

[0104] like Fig. 9 As shown, the dryer 100 of this embodiment has a tilting movable table 117, a third coupling 119, a fourth coupling 131 and a posture holding unit 136, which replace the tilting movable table 17, the first coupling 19, the second coupling 31 and the posture holding unit 36 ​​of the dryer 10 of embodiment 1. The other structures of the dryer 100 are substantially the same as those of the dryer 10 of embodiment 1.

[0105] like Fig. 9 as well as Fig.10 As shown, the tilting table 117 has a top plate 17a, side plates 117b, 17c, ear shafts (hollow tilting shafts) 117d, 17e, pins 17f, clamping chambers 117g, covers 117h and through holes 117k. Fig.10 The lower side) is called the centrifugal direction, and the radial inner side ( Fig.10 The radial direction when viewed from the tilting moving axis 3 is referred to as the radial direction.

[0106] The trunnion 117d is hollow cylindrical and extends along the tilting shaft 3. The trunnion 117d has a spring chamber 139. The spring chamber 139 is cylindrical centered on the tilting shaft 3. The spring chamber 139 opens in the centrifugal direction of the trunnion 117d.

[0107] The clamping chamber 117g is disposed on the centripetal side of the side plate 117b. The clamping chamber 117g may be opened on the centripetal side of the side plate 117b. The clamping chamber 117g is in the shape of a disk centered on the tilting shaft 3. The clamping chamber 117g is connected to the spring chamber 139.

[0108] The cover 117h covers the opening of the clamping chamber 117g and is fastened to the side plate 117b.

[0109] The through hole 117k extends parallel to the tilting axis 3. The through hole 117k penetrates the side plate 117c from the clamping chamber 117g in the centrifugal direction. A plurality of (eg, 4) through holes 117k may be provided. The through holes 117k are arranged rotationally symmetrically (eg, 4 times rotationally symmetrically) with respect to the tilting axis 3.

[0110] The third coupling 119 has a through hole 119 a and is in a hollow cylindrical shape. The through hole 119 a is connected to the spring chamber 139 .

[0111] The fourth joint 131 is substantially the same as the second joint 31 of the first embodiment.

[0112] like Fig.10 As shown, the posture maintaining portion 136 includes a push rod 145 , a clamp shaft 165 , a locking pin (locking body) 137 , a compression coil spring (elastic body) 167 , and a locking hole (accommodating body) 140 .

[0113] The push rod 145 is cylindrical and is disposed radially inside the fourth coupling 131. The push rod 145 may protrude in the centripetal direction from the fourth coupling 131. The push rod 145 moves integrally with the fourth coupling 131.

[0114] The clamp shaft 165 has a reciprocating shaft 165a, a contact portion 165b, a stopper 165c, and a flange 165d. The clamp shaft 165 is a rotating body centered on the tilting movement shaft 3. The reciprocating shaft 165a and the stopper 165c are arranged inside the spring chamber 139. The clamp shaft 165 is in the release position 96 in the centripetal direction (refer to Fig.12 ) and the centrifugal holding position 97. The stopper 165c protrudes radially outward more than the outer diameter of the reciprocating shaft 165a. The stopper 165c is arranged at the centrifugal end of the reciprocating shaft 165a. When the tilting moving device 24 is located at the retreat position 93, the stopper 165c abuts against the centrifugal end of the spring chamber 139.

[0115] The contact portion 165b protrudes from the stopper 165c in the centrifugal direction. The contact portion 165b may protrude from the centrifugal end of the trunnion 117d. The flange 165d is in the shape of a disk and is disposed at the centripetal end of the reciprocating shaft 165a. The flange 165d is disposed in the clamping chamber 117g.

[0116] The locking pin 137 is connected to the flange 165d. The locking pin 137 extends parallel to the tilting movement shaft 3. A plurality of (for example, four) locking pins 137 may be provided. The plurality of locking pins 137 are arranged rotationally symmetrically (for example, four times rotationally symmetrically) with respect to the tilting movement shaft 3. The locking pin 137 reciprocates in the through hole 117k integrally with the clamping shaft 165.

[0117] The spring 167 is disposed between the stopper 165c and the spring chamber 139. The spring 167 urges the clamp shaft 165 in the centrifugal direction.

[0118] The locking holes 140 are arranged on the side plate 15b of the rotating table 15. The locking holes 140 can be arranged in the same number as the locking pins 137. The locking holes 140 extend parallel to the tilting movement axis 3. A plurality of (for example, four) locking holes 140 can be arranged. The plurality of locking holes 140 are arranged rotationally symmetrically (for example, four times rotationally symmetrically) with respect to the tilting movement axis 3.

[0119] like Fig. 9 as well as Fig.10 As shown, when the tilting device 24 is located at the retreat position 93, the clamp shaft 165 moves to the holding position 97, and the locking pin 137 is inserted into the locking hole 140. As a result, the tilting angle of the tilting table 117 is maintained. At this time, the rotating table 15 can rotate.

[0120] Fig.11 as well as Fig.12 Indicates the state in which the tilting moving device 24 moves to the connection position 92. When the tilting moving device 24 moves from the retreat position 93 to the connection position 92, first the fourth coupling 131 is connected to the third coupling 119. When the tilting moving device 24 moves further, the push rod 145 abuts against the abutment portion 165b of the clamping shaft 165. Then, the push rod 145 pushes the clamping shaft 165 in the centripetal direction. When the tilting moving device 24 reaches the connection position 92, the clamping shaft 165 moves to the release position 96. At this time, the locking pin 137 is completely pulled out of the locking hole 140. As a result, the tilting moving worktable 117 can be tilted. At this time, the tilting moving drive motor 29 can rotate the tilting moving worktable 117 via the fourth coupling 131, the third coupling 119 and the ear shaft 117d.

[0121] After the tilting moving device 24 rotates the tilting moving table 117, the tilting moving device 24 moves to the retreat position 93. Then, the clamping shaft 165 moves, and the locking pin 137 is inserted into the locking hole 140. At this time, the tilting moving table 117 is locked. Then, the fourth coupling 131 is separated from the third coupling 119. When the tilting moving device 24 reaches the retreat position 93, the rotating table 15 can rotate.

[0122] In addition, the contact portion 165b of the clamp shaft 165 may not protrude from the ear shaft 117d. At this time, when the tilting movement device 24 is located at the connection position 92, the push rod 145 passes through the through hole 119a of the third coupling 119 and pushes the contact portion 165b in the centripetal direction.

[0123] In addition, a group of end gear disc couplings (Hirth Coupling) or a group of curved gear couplings (Curvic Coupling) can also be configured to replace the locking pin 137 and the locking hole 140. For example, the first end gear disc coupling (locking body) is configured on the centrifugal side end face of the side plate 117b with the tilting movable shaft 3 as the center. The first end gear disc coupling (locking body) is connected to the flange 165d through a rod that passes through the side plate 117b. In addition, the second end gear disc coupling (accommodating body) is configured on the centrifugal side end face of the side plate 15b with the tilting movable shaft 3 as the center. When the clamping shaft 165 is located at the connection position 92, the first end gear disc coupling is combined with the second end gear disc coupling to maintain the tilting movable workbench 117. The first end gear disc coupling can be a convex tooth or a concave tooth.

[0124] In addition, a part of the convex teeth constituting the end gear coupling may be configured to replace the locking pin 137. In this case, an end gear coupling having concave teeth may be configured to replace the locking hole 140. The end gear coupling having concave teeth may have concave teeth on the entire circumference. Alternatively, the locking body may be a part of the concave teeth, and the receiving body may be a part of the convex teeth.

[0125] According to the dryer of this embodiment, the posture maintaining unit 136 can be configured compactly.

[0126] The present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the main purpose of the present invention, and all technical matters included in the technical ideas recorded in the claims become the objects of the present invention. Although the above-mentioned embodiments show preferred examples, those skilled in the art can implement various alternatives, modifications, variations or improvements according to the contents disclosed in this specification, which are included in the technical scope recorded in the attached claims.

Claims

1. A centrifugal drying method, characterized in that: The centrifugal drying method is a centrifugal drying method for a drying object (5) having a plurality of stop holes (5b, 5d), and the centrifugal drying method comprises: The drying object (5) is placed on a rotating table (15) in a first posture (6) with the opening of a first stopper hole (5b) among the plurality of stopper holes (5b, 5d) facing downward; and The drying object (5) in the first posture (6) is rotated together with the rotating table (15) about a rotating shaft (1) extending in the vertical direction.

2. The centrifugal drying method according to claim 1, characterized in that: Also includes: The drying object (5) is tilted and moved around a tilting movement axis (3) extending in a horizontal direction so as to be in a second posture (7), wherein the second posture (7) is a posture in which a second stop hole (5d) among the plurality of stop holes (5b, 5d) whose opening faces a direction different from that of the first stop hole (5b) faces downward; and The drying object (5) in the second posture (7) is rotated together with the rotating table (15) around the rotating shaft (1).

3. The centrifugal drying method according to claim 1 or 2, characterized in that: Also includes: Move the tilting moving device (24) to the connection position (92), connect the second coupling (31) of the tilting moving device (24) to the first coupling (19) of the tilting moving worktable (17), and make the posture of the tilting moving worktable (17) rotatable; and The tilting moving device (24) is moved to the retreat position (93), the second coupling (31) is separated from the first coupling (19), and the plunger (37) is inserted into the pin hole (40) of the tilting moving worktable (17) to support the posture of the tilting moving worktable (17).

4. The centrifugal drying method according to claim 2 or 3, characterized in that: Also includes: The drying object (5) is tilted about the tilting movement axis (3) in such a manner that the second stop hole (5d) is in a third posture (8) facing sideways and radially outward; and The drying object (5) in the third posture (8) is rotated together with the rotating table (15) about the rotating shaft (1).

5. The centrifugal drying method according to any one of claims 1 to 4, characterized in that: The plurality of stop holes (5b, 5d) are internal threads with a valley diameter of not less than 6 mm and not more than 10 mm.

6. The centrifugal drying method according to any one of claims 1 to 5, characterized in that: Also includes: Dry air is blown toward the drying object (5) from a nozzle (49), and the nozzle (49) is arranged outside the rotation radius of the drying object (5) centered on the rotation axis (1).

7. A centrifugal dryer (10, 100), characterized in that: The centrifugal dryer (10, 100) centrifugally dries a drying object (5) having a plurality of stop holes (5b, 5d), and comprises: A rotating table (15), wherein the rotating table (15) rotates around a rotating axis (1) extending in the up-down direction; A tilting movable worktable (17, 117), wherein the tilting movable worktable (17, 117) is arranged on the rotating table (15) and tilts and moves around a tilting movable axis (3) extending in a horizontal direction; as well as A tilting movement device (24) capable of tilting the drying object (5) around the tilting movement axis (3) in a first posture (6) and a second posture (7, 8), wherein the first posture (6) is a posture in which the opening of a first stop hole (5b) among the plurality of stop holes (5b, 5d) is facing downward, and the second posture (7, 8) is a posture in which a second stop hole (5d) whose opening is facing a direction different from that of the first stop hole (5b) is facing downward.

8. The centrifugal dryer (100) according to claim 7, characterized in that: It also has a hollow tilting moving shaft (117d), which extends around the tilting moving shaft (3), is arranged on the tilting moving workbench (117), and is supported by the rotating table (15). The tilting moving device (24) has: a housing (140), the housing (140) extending parallel to the tilting movement axis (3) and arranged on the rotating table (15); a clamping shaft (165) arranged inside the hollow tilting movable shaft (117d) and moving forward and backward along the tilting movable shaft (3) between a holding position (97) which is radially outward and a releasing position (96) which is radially inward when viewed from the rotating shaft (1); a locking body (137), the locking body (137) being connected to the clamping shaft (165), and when the clamping shaft (165) moves to the holding position (97), the locking body (137) is inserted into the receiving body (140), and when the clamping shaft (165) moves to the releasing position (96), the locking body (137) is detached from the receiving body (140); A third coupling (119), the third coupling (119) being arranged on the hollow tilting movable shaft (117d); an elastic body (167), wherein the elastic body (167) applies force to the clamping shaft (165) from the release position (96) to the holding position (97); a fourth coupling (131), the fourth coupling (131) being arranged on the tilting moving device (24), and when the rotating table (15) is located at the original position (91), the fourth coupling (131) can reciprocate between a connection position (92) connected to the third coupling (119) and a retreat position (93) separated from the third coupling (119) and capable of rotating the rotating table (15); and A push rod (145), wherein the push rod (145) is arranged radially inwardly of the fourth coupling (131) relative to the tilting movable shaft (3), and when the fourth coupling (131) moves to the connecting position (92), the push rod (145) pushes the clamping shaft (165) into the releasing position (96).

9. The centrifugal dryer (100) according to claim 8, characterized in that: The third coupling (119) has a through hole (119a) extending along the tilting movement axis (3). The clamping shaft (165) or the push rod (145) passes through the through hole (119a), and the push rod (145) can abut against the clamping shaft (165b).

10. The centrifugal dryer (100) according to claim 8 or 9, characterized in that: The locking body is a locking pin (137). The receiving body is a locking hole (140).

11. The centrifugal dryer (10, 100) according to claim 7, characterized in that: The tilting moving device (24) has: A first coupling (19, 119), wherein the first coupling (19, 119) is arranged on the tilting movement shaft (3); a second coupling (31, 131), the second coupling (31, 131) being arranged on the tilting moving device (24), and when the rotating table (15) is located at the original position (91), the second coupling (31, 131) can reciprocate between a connection position (92) connected to the first coupling (19, 119) and a retreat position (93) separated from the first coupling (19, 119) and capable of rotating the rotating table (15); a tilting drive machine (29), the tilting drive machine (29) being connected to the second coupling (31, 131) and causing the second coupling (31, 131) to rotate; as well as A posture holding unit (36, 136) is arranged on the tilting moving device (24) and holds the tilting moving worktable (17, 117) in either the first posture (6) or the second posture (7, 8).

12. The centrifugal dryer (10, 100) according to claim 11, characterized in that: The posture maintaining portion (36, 136) allows the tilting movable worktable (17, 117) to rotate when the second coupling (31, 131) is located at the connection position (92), and restricts the rotation of the tilting movable worktable (17, 117) when the second coupling (31, 131) is located at the retreat position (93).

13. The centrifugal dryer (10) according to claim 11 or 12, characterized in that: The posture maintaining unit (36) comprises: an advance / retract guide member (25), the advance / retract guide member (25) extending along the axial direction of the first coupling (19); a support bracket (27), the support bracket (27) being arranged on the advance / retract guide member (25), supporting the second coupling (31), and moving integrally with the second coupling (31) between the connection position (92) and the retreat position (93); A pin hole (40), wherein the pin hole (40) is arranged on the tilting movable workbench (17); a plunger (37), the plunger (37) being disposed on the rotating table (15), and the plunger (37) being capable of reciprocating between an insertion position (94) for inserting into the pin hole (40) and a withdrawal position (95) for disengaging from the pin hole (40); an elastic body (41), the elastic body (41) applying force to the plunger (37) from the insertion position (94) to the withdrawal position (95); a push rod (45), the push rod (45) being disposed on the support bracket (27); and A release rod (43) for pulling out the plunger (37) from the pin hole (40) when the support bracket (27) moves to the connection position (92), the release rod (43) having: A fulcrum (43a), wherein the fulcrum (43a) is swingably supported on the rotating table (15); An action point (43c), the action point (43c) is pushed in by the push rod (45); and a force point (43b), the force point (43b) pulls out the plunger (37).

14. A centrifugal drying method, characterized in that: The centrifugal drying method is a centrifugal drying method for a drying object (5) having a plurality of stop holes (5b, 5d), and the centrifugal drying method comprises: The drying object (5) is placed on a rotating table (15) in a first posture (6) with the opening of the first stop hole (5b) among the plurality of stop holes (5b, 5d) facing downward; The drying object (5) in the first posture (6) is rotated together with the rotating table (15) around a rotating shaft (1) extending in the vertical direction; The tilting moving device (24) moves to the connection position (92), the fourth coupling (131) of the tilting moving device (24) is connected to the third coupling (119) of the tilting moving worktable (117), and the second push rod (145) moves to push the clamping shaft (165) into the release position (96) inside the hollow tilting moving shaft (117d), and the locking body (137) is pulled out from the housing (140) of the rotating table (15), so that the posture of the tilting moving worktable (117) can be rotated freely; and The tilting moving device (24) moves to the retreat position (93), the fourth coupling (131) leaves the third coupling (119), and through the elastic force of the elastic body (167), the clamping shaft (165) moves to the retaining position (97), and the locking body (137) is inserted into the accommodating body (140) to support the posture of the tilting moving workbench (117).

15. The centrifugal drying method according to claim 14, characterized in that: The locking body is a locking pin (137). The receiving body is a locking hole (140).

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