JP2012024915A - Rotary drum device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary drum device opening and closing a lid by normally and reversely rotating a rotary drum, simplifying a structure of a mechanism for driving and opening and closing the lid, capable of reducing the cost, and excellent in durability.SOLUTION: A lid opening and closing member 18 is attached to the outward-opening type lid 11 opening and closing an opening 10 of the rotary drum 4, an annular closed lid holding rail 19 and a lid open and close guide 20 are arranged on outside positions of both ends of the rotary drum 4, and a switching part 21 is provided in the halfway of the closed lid holding rail 19 so that the lid opening and closing member 18 on the outside of the closed lid holding rail 19 is guided to the inner side of the closed lid holding rail 19 and the lid 11 is closed in normal rotation of the rotary drum 4 and the lid opening and closing member 18 is guided to the outer side of the closed lid holding rail 19 and the lid 11 is opened in reverse rotation of the rotary drum 4.

Description

  The present invention relates to rotary drum devices used for plating, adhesives, etc. by cleansing, cleaning and dipping of various small parts, and further, opening and closing of openings provided in the rotary drum. The present invention relates to a rotating drum device that can be opened and closed only by switching between forward rotation and reverse rotation of the rotating drum.

  A conventional rotary drum device used for the above-mentioned purposes supports a rotary drum arranged horizontally through a shaft on a shaft center, and the side edge of an opening provided in a body portion of the rotary drum The outer lid that opens and closes the opening is pivotally attached to the axis of the rotary drum. When the tip engagement tool is fitted in the scroll groove of the scroll plate and the scroll plate is rotated by the activation of the rotary drive, the lid is opened and closed by swinging the arm along the scroll groove, and the lid is opened or closed with respect to the opening. At the position, the rotation of the scroll plate is transmitted to the rotating drum via the arm, and the rotating drum rotates (see, for example, Patent Document 1).

  In another rotating drum device, an open lid for opening and closing the opening is pivotally attached to a side edge of an opening provided in a body portion of the rotating drum arranged horizontally, and attached to the shaft of the rotating drum. The free rotating member is interlocked with the rotary drive, the pivot of the free rotating member and the lid are interlocked so that the lid is opened and closed by the rotation of the free rotating member, and the lid is opened or closed with respect to the opening. Then, the arm is fixed to the free rotating member so that the rotation of the free rotating member is transmitted to the rotating drum in a radial direction, and the arm contacts the rotating drum when the lid is in the open or closed position with respect to the opening. The rotation receiving member that directly transmits the rotation of the free rotating member to the drum is provided (for example, see Patent Document 2).

  The rotating drum device as described above can automatically open and close the lid by rotating the rotating drum forward and backward with a rotation driving machine, and the rotation drum can be driven and the lid opened and closed by using one rotation driving machine. There is an advantage that the processing object can be easily charged and discharged into the rotating drum.

Japanese Patent Laid-Open No. 10-280684 JP 11-333391 A

  By the way, in the former case, the scroll drum device used for driving the rotary drum and opening / closing the lid in the former case is structurally complicated and expensive to manufacture, and the scroll groove is formed in the scroll groove. Since the arm end engaging tool slides, there is room for improvement in terms of durability.

  Also, as in the latter case, a device provided with a free rotating member, an arm, and a rotating receiving member has a large number of components and is structurally complicated, resulting in high manufacturing costs and durability. There is room for improvement.

  Therefore, the object of the present invention is to simplify the structure of the mechanism for driving and opening and closing the lid in a rotating drum device that automatically opens and closes the lid by forward and reverse rotation of the rotating drum, and is inexpensive and excellent in durability. Another object of the present invention is to provide a rotating drum device.

  In order to solve the above-described problems, the invention of claim 1 supports a rotating drum rotatably through a shaft on a shaft so as to rotate forward and backward, and is mounted on a body portion of the rotating drum. An outer opening type lid that opens and closes the opening is pivotally attached to a side edge of the opening provided at a front end with respect to the forward rotation direction of the rotating drum, and is located at a position away from the fulcrum of the lid. A lid opening / closing member is attached, and is arranged coaxially with the rotating drum at a position outside the axial end surface of the rotating drum, and restrains the lid opening / closing member of the closed lid from moving radially outward. An annular inner cover holding rail that has an inner diameter that guides in the rotation direction and holds the cover closed when the rotating drum is rotated forward with the cover closed is disposed. Move to a midway position by switching between normal and reverse rotation of the rotating drum. Said lid opening and closing member is guided to the inside or outside of the closure retaining rail, it is provided with a switching unit for changing to one of the open state and the closed state of the lid.

  According to a second aspect of the present invention, the switching portion provided in the middle of the lid holding rail is provided with a dividing portion in the middle of the lid holding rail, and the continuous annular state of the lid holding rail is held in the dividing portion. A switching rail that can be formed, and the switching rail has an open position inclined to the inside of the lid holding rail with an end portion positioned rearward with respect to the positive rotation direction of the rotating drum as a fulcrum. The closed lid holding rail can swing between the closed positions that hold the continuous annular state, and the switching rail is urged to return to the normally open position.

  Here, the rotating drum is made rotatable by closing both ends of the cylindrical body with end plates and horizontally supporting shafts provided on both end plates with bearings arranged at both ends of the support frame. The rotary drive machine fixedly arranged on the shaft and the shaft are interlocked so that the rotary drum can be forwardly or reversely rotated.

  The opening provided in the cylindrical drum portion of the rotating drum is formed over the entire length of the drum portion, and the lid for opening and closing the opening is located on the opening edge located on the front side with respect to the normal rotation direction of the rotating drum. When the end is pivoted and the opening is closed, it becomes a part of the cylindrical body, and when the opening is opened, the pivoting part is opened outward with the fulcrum as a fulcrum, and lids are placed on both sides of the tip part opposite to the pivoting part. An opening / closing member is attached.

  The lid holding rail and the lid opening / closing guide are fixedly arranged on the outside of the portion where both ends of the rotating drum in the axial direction are located by attaching to the support frame, and the inner and outer circumferences of the lid holding rail rotate. It becomes an arrangement that is coaxial with the drum, and by holding the lid opening / closing member of the lid with the opening closed on the inner circumference, the lid opening / closing member is restrained from swinging outward in the radial direction. By guiding the lid opening / closing member along the inner periphery, a state in which the opening of the lid is closed is maintained.

  In the middle of the lid holding rail, a dividing portion is provided on one side, which is the side on which the lid opening / closing member rises when the rotating drum rotates forward, and the switching rail of the dividing portion is divided at the closed position. It becomes an arc shape that keeps the annular shape of the lid holding rail, and when it is in the open position, the upper end is inclined so as to protrude toward the inside of the lid holding rail, so that the dividing portion of the lid holding rail A gap through which the lid opening / closing member attached to the lid can pass is formed between the upper end and the tip of the switching rail.

  When the rotating drum rotates forward in the closed state where the lid opening / closing member is located inside the lid holding rail, the lid opening / closing member restrains the movement of the lid holding rail in the opening direction radially outward. At this time, the switching rail is pushed to the closed position by the rotating lid opening / closing member, thereby allowing the passage of the lid opening / closing member, and the rotating drum rotates forward in the closed state.

  Also, when the rotating drum is rotated in the reverse direction with the lid opening / closing member restrained by the inner diameter of the lid holding rail, the lid opening / closing member approaching the switching rail closes by riding on the switching rail in the open position. The lid opening / closing member is guided to the outside of the lid holding rail, the restriction on the movement in the opening direction is released, and the lid hangs down by its own weight by moving from the side to the bottom along with the reverse rotation of the rotating drum, and from the opening The said opening will open by leaving | separating and the to-be-processed object will fall and be discharged | emitted from the opening which moved to the lower part.

  When the rotating drum is further rotated in the reverse direction from the state where the opening is stopped on the side opposite to the switching portion, the lid opening / closing member of the lid to be pushed up is guided, and the lid is opened with the opening positioned at the top. When the lid is tilted toward the body and the lid falls down and approaches the opening, the lid opening / closing member is received on the outer periphery of the lid holding rail, and the rotating drum is reversed until the lid opening / closing member is located outside the switching rail. When the rotating drum is switched to normal rotation after that, the lid opening / closing member moves along the outside of the switching rail to enter the inside of the lid holding rail, and the lid overlaps with the trunk and opens. The lid opening / closing member is restrained from moving radially outwardly inside the lid holding rail, so that the rotating drum can rotate in the normal state in the closed state, thereby processing the workpiece. Become.

  According to a third aspect of the present invention, a rotary drum is rotatably supported via a shaft on an axis so as to rotate forward and backward, and a rotary drum is provided on a side edge of an opening provided in a body portion of the rotary drum. An outer opening-type lid that opens and closes the opening is pivotally mounted on a fulcrum at an end located forward with respect to the positive rotation direction of the lid, and a lid opening / closing member is attached at a position away from the fulcrum of the lid, It is arranged coaxially with the rotating drum at a position outside the axial end surface, and has an inner diameter that guides the lid in a closed state in a rotational direction while restraining the lid opening / closing member from moving radially outward. When the rotating drum is rotated forward with the lid closed, an annular lid holding rail that holds the lid closed is arranged, and at the middle position of the lid holding rail during the reverse rotation of the rotating drum. The lid opening / closing member located inside the lid holding rail is closed A first switching unit for opening the lid that guides to the outside, and a second lid for closing the lid opening / closing member that is positioned outside the lid holding rail when the rotary drum rotates forward. The switching portion is provided, and the lid is changed between the closed state and the open state by switching between the forward rotation and the reverse rotation of the rotary drum.

  According to a fourth aspect of the present invention, the first switching portion for opening the lid provided in the middle of the lid holding rail is provided with a dividing portion in the middle of the lid holding rail, and the lid holding rail is provided in the dividing portion. A switching rail that can maintain a continuous annular state is arranged, and this switching rail tilts inside the lid-holding rail with the end located rearward with respect to the normal rotation direction of the rotating drum as a fulcrum. It is possible to swing between the open position to be closed and the closed position to hold the continuous annular state of the lid holding rail, and this switching rail is formed by urging the return elasticity to the normally open position. The second switching portion is provided with a dividing portion in the middle of the lid holding rail, and a switching rail capable of holding the continuous annular state of the lid holding rail is disposed in the dividing portion. Is in the positive rotation direction of the rotating drum. With the end located at the rear as a fulcrum, it can swing between an open position that inclines inside the lid holding rail and a closed position that maintains the continuous annular state of the lid holding rail. It is formed by biasing the return elasticity to the normally closed position.

  Since the switching rail of the first switching unit for opening the lid is always open by dividing the lid holding rail and inclining inward, the lid opening / closing member is positioned inside the closing lid holding rail. In this state, when the rotary drum rotates forward, the first switching portion moves to a closed position where the switching rail is pushed by the lid opening / closing member and does not open outward, whereby the lid holding rail is moved to the lid opening / closing member. The lid opening / closing member is guided to rotate in the forward rotation direction by restraining it from coming out, and the rotating drum is rotated in the reverse direction with the lid opening / closing member positioned inside the lid holding rail. When this occurs, the lid opening / closing member is guided to the outside of the lid holding rail to bring it into an open state.

  In addition, the switching rail of the second switching unit for closing the lid is provided at a position near the upper part in the middle of the lid holding rail and is normally closed so that the lid holding rail is not continuously opened to the outside. In the closed state where the opening and closing member is located inside the lid holding rail, the lid opening and closing member is guided to rotate in the normal rotation direction, and the lid opening and closing member is rotated from the opened state where it is placed on the outer side of the upper side of the closing lid holding rail When the drum is rotated forward and the lid opening / closing member is placed on the second switching rail, it is pushed down by the weight of the lid and moved to the inner open position, and the lid opening / closing member is moved to the closing lid holding rail. It is guided to the inside and acts to close the lid.

  According to a fifth aspect of the present invention, a lid opening / closing guide for guiding the lid opening / closing member is disposed outside the closing lid holding rail in the radial direction, and the lid opening / closing guide is disposed outside the closing lid holding rail. When the rotating drum rotates in the reverse position, the lid opening / closing member is guided so as to keep the lid open in the range where the lid rotates the lower position of the rotating drum, and the lid is moved from the lower position to the upper position. The lid opening / closing member is guided so that the lid falls into the closed position with respect to the opening within the range of rotation.

  According to this invention, the lid of the opening can be automatically opened and closed simply by switching the forward rotation and the reverse rotation of the rotating drum, and the closed state is restrained by the closing lid holding rail when the rotating drum is rotating forward. By rotating the rotating drum in the forward direction, it is possible to efficiently process the workpiece on the work piece.In addition, the lid opening / closing member is attached to the lid, and the lid holding rail and the lid opening / closing guide are installed at both axial end positions of the rotating drum. By simply using a combination of arcuate rails, the structure of the mechanism that opens and closes the lid can be simplified, and the rotary drum device with low cost and excellent durability can be used. Become.

The front view which shows 1st Embodiment of the rotating drum apparatus which concerns on this invention The expanded left view which shows 1st Embodiment of the rotating drum apparatus based on this invention (A) is a perspective view of the state which opened the lid | cover which shows the structure of the rotating drum and cover in 1st Embodiment of the rotating drum apparatus based on this invention, (b) is located in the closed lid holding rail and its outer side The perspective view which notched the part which shows the structure of a lid | cover opening / closing guide In the first embodiment of the rotary drum device according to the present invention, a side view with a part cut away showing the phase of the rotary drum with the lid opening In the first embodiment of the rotary drum device according to the present invention, a side view with a part cut away showing the relationship between the rotary drum, the lid holding rail, and the lid opening / closing guide when the lid transitions to a state of closing the opening In the first embodiment of the rotary drum device according to the present invention, a part of the relationship between the rotary drum, the lid holding rail, and the lid opening / closing guide when the lid is closed and the keren operation is performed is cut away. Side view In the first embodiment of the rotary drum device of the present invention, a method of separating the object to be processed and the kelen member and collecting and reusing the element is performed when the kelen process for removing the deposit on the object to be processed is performed. Sectional drawing seen from the side which shows the 1st example of the means to do In the first embodiment of the rotary drum device of the present invention, the first means for carrying out the method of separating the object to be treated and the kelen member and collecting and reusing the kelen member in the case of carrying out the kelen treatment for removing the deposits. Sectional view seen from the front showing an example of 2 The front view which shows 2nd Embodiment of the rotating drum apparatus based on this invention The enlarged right view which shows 2nd Embodiment of the rotating drum apparatus based on this invention The perspective view which shows the structure of the rotating drum in the 2nd Embodiment of the rotating drum apparatus based on this invention, a cover, a lid holding rail, and a lid opening / closing guide. In 2nd Embodiment of the rotating drum apparatus based on this invention, (a) is a side view which notched a part which shows the state which the rotating drum stopped in the position which the cover opened the opening, (b) is a rotating drum The side view which notched a part which shows the state where the lid closed the opening by forward rotation (C) is a side view in which the lid is closed by the forward rotation of the rotating drum with the opening closed, and a part of the state where keren work is performed is cut away, (d) is the lid opened by the reverse rotation of the rotating drum. Side view with a part cut away showing the state during opening (E) is a side view with a part cut away showing a state in which the lid is opened by the reverse rotation of the rotary drum, and (f) is a view in which the lid and the open opening are rotated upward by the reverse rotation of the rotary drum. Side view with part cut away showing the state of the way (G) The side view which notched a part which shows the state which the cover and the opening opened by the reverse rotation of the rotating drum rotated upwards

  Hereinafter, first and second embodiments of the present invention will be described together with illustrated examples.

  In the first embodiment of the rotary drum device according to the present invention, the lid holding rails are arranged at both ends of the rotary drum, and the switching portion provided at one position of the lid holding rail and the forward and backward rotation of the rotary drum are performed. The opening provided in the rotating drum can be automatically opened and closed by switching, and FIGS. 1 to 8 show the rotating drum device of the first embodiment.

  As shown in FIGS. 1 to 3, the rotary drum device 1 is installed horizontally so that the rotary drum 4 can be freely rotated at the upper part between the support frames 3 and 3 provided opposite to both ends of the horizontally long base base 2. The rotary drum 5 is capable of forward / reverse switching such as a motor provided on the base 2 so that the rotary drum 4 can be rotated forward and backward b and stopped.

  The rotating drum 4 includes a cylindrical body portion 6 that is horizontally long, end plates 7 and 7 that close both ends of the body portion 6, and an outer surface of both end plates 7 and 7 that is coaxial with the body portion 6. The shafts 8 and 8 are supported by bearings 9 and 9 in the middle of the support frames 3 and 3, and the shaft center is rotatable in a horizontal state. The body portion 6 has an opening width in the range of about 90 ° in the circumferential direction, and is provided with a horizontally long opening 10 extending over the entire length in the length direction. The opening 10 can be freely opened and closed by an outer opening type lid 11. It has become.

  The lid 11 has an arc shape having the same curvature as that of the body portion 6 so as to constitute a part of the peripheral wall of the body portion 6 at a position where the opening 10 is closed, and is large enough to close the width and length of the opening 10. The rear end portion is attached to the opening edge located forward of the rotating drum 4 in the forward rotation direction with respect to the opening 10 of the body portion 6 by a pivot shaft 12 of the hinge, and the lid 11 is mounted on the pivot shaft 12. 3A and 3B, it can freely rotate between a closed position that closes the outside of the body portion 6 and closes the opening 10 from the closed position that protrudes toward the outside of the body portion 6, and FIG. Reference numeral 11 denotes a state of the open position where the opening 10 is opened.

  In the first embodiment, the forward rotation a of the rotary drum 4 is a counterclockwise rotation in FIGS. 4 to 6, and the reverse rotation b is a clockwise rotation in FIG.

  The inner surface of the body portion 6 and the lid 11 is provided with anti-wear lining, and inside the body portion 6, although not shown in the drawings, for scraping a structure corresponding to the type of object to be processed and the processing content Blades are provided.

  A horizontally long intermediate shaft 13 positioned below the rotary drum 4 is rotatably disposed on the base table 2 by being supported by a lower bearing 14, and the intermediate shaft 13 and the rotary drive machine 5 are interlocked and rotated. A sprocket 15 fixed to the shafts 8 and 8 of the drum 4 and a sprocket 16 fixed to both ends of the intermediate shaft 13 are interlocked by a chain 17 or the like.

  Accordingly, when the rotary drive machine 5 is started, the rotation is transmitted to the rotary drum 4 via the intermediate shaft 13, and the rotary drum 4 can be rotated forwardly a, reversely rotated b, and stopped by the control of the rotary drive machine 5. .

  On the outer surface of the lid 11, in the middle of the distance from the pivot shaft 12, which is a fulcrum at both ends in the length direction, or at the tip position close to the opening / closing moving edge, outward in the length direction from the end surface of the rotating drum 4. A protruding lid opening / closing member 18 may be attached. The lid opening / closing member 18 may be circular, but in the illustrated case, the lid opening / closing member 18 is attached so as to be rotatable about an axis parallel to the length direction of the rotating drum 4. An example using a trochanter such as a bearing is shown.

  The lid 11 is held in the closed state via the lid opening / closing member 18 when the rotating drum 4 is rotated forward, and the lid opening / closing member is rotated when the rotating drum 4 is rotated in the reverse direction. A lid holding rail 19 that allows the lid to be opened by releasing the restraint of 18 and a lid opening / closing guide 20 are arranged on the outer side in the radial direction by being attached to the support frames 3 and 3.

  The above-mentioned lid holding rail 19 is formed in an annular shape having concentric inner and outer circumferences so as to guide the lid opening / closing member 18 at the inner circumferential edge so as to hold the closed state of the lid 11 when the rotary drum 4 is rotated forward a. These are fixed to the support frame 3 so as to be coaxial with the rotating drum 4.

  As shown in FIGS. 4 to 6, the inner diameter of the lid holding rail 19 is slightly larger than the outer diameter of the rotary drum 4, and the inner edge of the lid 11 is closed when the lid 11 closes the opening 10. The lid opening / closing member 18 comes into contact with the lid and restrains the lid opening / closing member 18 from moving radially outward, and at the same time, the lid 11 can freely rotate along the inner peripheral edge, and the lid 11 maintains the closed state in which the opening 10 is closed. In addition, the rotating drum 4 can be rotated forward a in the closed state.

  In the middle of the lid holding rail 19, the lid opening / closing member 18 is in the middle of the part where the lid opening / closing member 18 rotates from the bottom to the top during the forward rotation a of the rotary drum 4. By switching between the forward rotation a and the reverse rotation b of the rotary drum 4 at the position, the lid opening / closing member 18 of the lid 11 is put inside the lid holding rail 19 to be in a closed state, or it is taken out to the outside to open the lid. A switching unit 21 is provided for the purpose.

  That is, the switching unit 21 and the lid opening / closing member 18 are arranged so that the lid opening / closing member 18 is moved when the rotating drum 4 is rotated in the reverse direction b in the closed state where the lid opening / closing member 18 is positioned inside the lid holding rail 19. The lid 11 acts to open the opening 10 by being guided to the outside of the lid holding rail 19, and the rotating drum 4 is in the open state where the lid opening / closing member 18 is located outside the lid holding rail 19. Is forwardly rotated a, the lid opening / closing member 18 is guided to the inside of the lid holding rail 19 so that the lid 11 closes the opening 10.

  The switching portion 21 is formed by providing a dividing portion 22 at a predetermined interval along the circumferential direction at a position on one side of the lid holding rail 19 and arranging the switching rail 23 on the dividing portion 22. Has been.

  The switching rail 23 has a length that can be accommodated in the dividing portion 22, and a lower end thereof is pivoted to a lower end portion that is rearward with respect to the direction of the forward rotation a of the rotary drum 4 in the dividing portion 22 by a pivot 24. With the pivot 24 as a fulcrum, an open position (see FIG. 4) that protrudes inward toward the inside of the lid holding rail 19 and a continuous annular state of the lid holding rail 19 by being stored in the dividing portion 22 and not opening outward. It can swing between the holding closed position (see FIG. 6), and the switching rail 23 is urged by the spring 25 to return to the normally open position.

  When the switching rail 23 is in the open position, the lid opening / closing member 18 passes between the upper end of the switching rail 23 and the upper end of the dividing portion 22 of the lid holding rail 19 as shown in FIG. A gap that can be formed is formed.

  When the rotary drum 4 is rotated forward a in the closed state where the lid opening / closing member 18 is restrained by the inner peripheral edge of the closed lid holding rail 19 and the lid 11 closes the opening 10, the inner peripheral edge of the closed lid holding rail 19 is moved. As shown in FIG. 6, the rotating lid opening / closing member 18 passes through the portion of the switching rail 23 so as to push the switching rail 23 outward to the closed position. The opening / closing member 18 is prevented from coming out radially outward of the lid holding rail 19, and the lid opening / closing member 18 does not move outward on the inner circumference of the lid holding rail 19 when the rotary drum 4 is rotating forward a. Thus, the closed state where the opening 10 is closed by the lid 11 is maintained.

  Further, when the rotating drum 4 is rotated in the reverse direction b in the closed state, the switching rail 23 is in the normally open position toward the inside, so that the lid 11 faces the pivot shaft 12 backward and moves from the upper part to the lower part. When turning, the lid opening / closing member 18 comes into contact with the outside of the upper end portion of the switching rail 23 inclined inward, and is guided to the outside of the lid holding rail 19 by this switching rail 23. Thus, the lid opening / closing member 18 is released from the restraint of the lid holding rail 19, and the lid 11 opens the opening 10 by dropping with its own weight with the pivot shaft 12 as a fulcrum as the reverse rotation b of the rotating drum 4 proceeds. It will be.

  The lid opening / closing guide 20 is positioned with a gap on the outer side in the radial direction in the lower half of the lid holding rail 19, and has a lid opening holding portion 20 a that is substantially concentric with the lid holding rail 19. In the holding part 20a, the lid is guided from the end located at the front in the direction of the reverse rotation b of the rotary drum 4, and after turning obliquely upward, the lid is guided to bend toward the upper part of the lid holding rail 19 As shown in FIG. 4, the lid opening / closing member 18 that has been pivoted downward is fixed to the support frame 3 so as to come into contact with the inner peripheral edge thereof.

  The lid opening and holding part 20a of the lid opening / closing guide 20 has a lid opening / closing member 18 guided to the outside of the switching rail 23 when the rotating drum 4 is rotated in the reverse direction b so that the lid 11 is suspended by its own weight. , The lid opening / closing member 18 is received at the inner periphery thereof, and the lid opening / closing member 18 is moved in the direction of the reverse rotation b so that the lid 11 maintains the opened state in which the opening 10 is opened. When the rotary drum 4 is guided so as to precede the pivot shaft 12 and the opening 10 is stopped at a phase in which the opening 10 faces the left side of the drawing as shown in FIG. 4, the lid opening / closing member 18 is moved to the lid opening holding portion 20a. The lid 11 is held in a state of being slightly upwardly horizontal and held open by its own weight, and the workpiece can be put into the rotary drum 4 from the opening 10.

  Further, the lid guide portion 20b causes the lid opening / closing member 18 of the lid 11 that is pushed up to the body portion 6 of the rotating drum 4 when the rotating drum 4 rotates in the reverse direction b from the opened state in which the opening 10 is opened. The lid 11 is guided to approach and is raised so as to tilt the lid 11 toward the opening 10 that moves upward. When the lid 11 moves to the top of the rotating drum 4, the lid 11 falls by its own weight due to the movement of the center of gravity. Moves away from the closing guide 20b, is held in contact with the outer periphery of the closing holding rail 19, and moves toward the switching portion 21.

  Although illustration details are omitted, for example, a brake means that can be pressed against the end of the rotating drum 4 is provided so that the rotating drum 4 does not rotate freely when the rotating drum 4 stops rotating, or the rotating drum 4 It is possible to provide water supply means for supplying water into the rotary drum 4 when the workpiece is processed using the shaft 8.

  7 and 8 show a method of separating the object to be processed and the kelen member and collecting and reusing the element when using the rotating drum device 1 of the present invention to remove the deposit on the object to be processed. It shows the means to do.

  Here, when the object to be processed (work) c is a long pipe with a hook or many protrusions such as construction materials, only the object to be processed c is put into the rotating drum 4 and the rotating drum 4 is rotated forward. If cleansing is performed, the protruding portion hits the object c to be damaged, and at the same time, the protruding portion gets in the way and uniform kelen processing cannot be performed as a whole. If a large number of kelen members d such as steel balls having a smaller diameter are simultaneously introduced into the rotating drum 4 to perform keren, the damage to the object c can be reduced, and neatly clean can be obtained in every corner.

  However, when the object to be processed c and the kelen member d are mixed and subjected to the kelen process, an operation for separating the object to be processed c and the kelen member d after the take-out from the rotary drum 4 becomes necessary. d must be devised so that it can be reused efficiently.

  FIG. 7 shows a first example of separation of the workpiece c and the kelen member d and an efficient reuse method of the kelen member. A sieving member 31 such as a skid or a stool is provided at the lower part of the rotating drum 4. The recovery container 32 for the kelen member d is disposed below the sieving member 31.

  The shape and size of holes and meshes are set so that the skid and slat of the sieving member 31 cannot pass the workpiece c and only the keren member d smaller than this can be passed, and the opening of the rotating drum 4 The mixture of the object to be processed c and the kelen member d discharged from 10 is received by the sieving member 31 and given vibration or the like, leaving the object to be processed c on the upper surface and dropping the kelen member d.

  The object c to be processed on the sieving member 31 is removed by an artificial or mechanical means, and the dropped kelen member d is stored in a collection container 32 waiting immediately below, and the collection container 32 is stored by a forklift 33 or the like. Handled and pulled out, lifted as shown by the alternate long and short dash line in FIG. 7, and the kelen member was introduced from the opening 10 into the rotating drum 4 stopped with the opening 10 opened. Is.

  FIG. 8 shows a second example of the separation of the workpiece and the kelen member and an efficient method of reuse of the kelen member, and a downward slope toward the center in the length direction at a position directly below the rotary drum 4. A receiving bucket 34 is provided, and a sieving member 31 similar to that of the first example described above is provided on the upper surface of the receiving bucket 34, and the bottom surface of the receiving bucket 34 is inclined downwardly toward one side at the center lower position. 35, a vertical conveyor 36 is disposed at one end of the rotating drum 4, and the lower end of the collection container 35 and the lower portion of the vertical conveyor 36 are connected by an inclined passage 37.

  The kelen member d such as a steel ball collected in the collection container 35 rolls on the inclined passage 37 from the collection container 35 and moves into the lower portion of the vertical conveyor 36, is lifted by the vertical conveyor 36, and is chute 38 on the upper end. The kelen member is introduced from the opening 10 into the rotating drum 4 that is stopped in a state in which the opening 10 is opened, and the workpiece c remaining on the sieving member 31 is artificial. It may be removed by manual or mechanical means.

  The rotating drum device 1 according to the first embodiment of the present invention has the above-described configuration, and FIG. 4 shows a state in which the opening 10 of the rotating drum 4 is opened and a workpiece or a kelen member is introduced therein. When the rotary drum 4 is stopped so that the opening 10 is positioned on the opposite side of the switching portion 21 on the left side of the figure with the lid opening / closing member 18 positioned outside the lid holding rail 19, the lower side of the opening 10 The lid 11 on which the pivot shaft 12 is located is opened to the outside by its own weight, and the lid opening / closing member 18 is bent at the end of the lid holding part 20a in the lid opening / closing guide 20 and bends with the lid guiding part 20b. The object to be processed and the kelen member can be put into the rotary drum 4 from the opening 10.

  When the rotating drum 4 is rotated backward at a low speed b in the clockwise direction indicated by the arrow in FIG. 4 after the workpiece and the kelen member are introduced, the lid 11 is pushed up by the pivot shaft 12 and precedes the pivot shaft 12. Then, the rotating lid opening / closing member 18 is guided to approach the rotating drum 4 by the closing lid guiding portion 20b, whereby the lid 11 is raised toward the opening 10 as the reverse rotation b proceeds, and the pivot shaft 12 is moved. When the line connecting the lid opening / closing member 18 passes through the vertical line, the lid 11 falls down by its own weight toward the trunk portion 6 due to the movement of the center of gravity, and the lid opening / closing member 18 is held closed as shown by the one-dot chain line in FIG. Abutting on the outer peripheral edge of the rail 19, the lid 11 rotates in the direction of reverse rotation b with the opening 10 slightly opened.

  As shown in FIG. 7, the middle of the lid 11 and the body portion 6 can be connected by a shock absorber 39 to prevent occurrence of an impact when the lid 11 falls down due to its own weight.

  When the opening 10 of the rotating drum 4 rotated in the reverse direction b is rotated to the diagonally upper right position in FIG. 5, the lid opening / closing member 18 faces the dividing portion 22 of the lid holding rail 19 and the lid 11 hangs down by its own weight. Thus, the opening 10 is approached, and the reverse rotation b of the rotating drum 4 is stopped in a state where the lid opening / closing member 18 is in contact with the outside of the switching rail 23 in the open position as shown in FIG.

  Next, when the rotary drum 4 is rotated forward a from the state of FIG. 5, the lid opening / closing member 18 moves toward the switching rail 23 by approaching the body 6 so that the lid 11 closes the opening 10 by its own weight. And move toward the inside of the lid holding rail 19 from the interval formed between the switching rail 23 in the open position and the upper end of the dividing portion 22 of the lid holding rail 19. 11 is in a closed state with the opening 10 closed.

  When the lid opening / closing member 18 enters the inside of the lid holding rail 19, the lid opening / closing member 18 abuts against the inner peripheral edge of the lid holding rail 19, thereby restraining the outward movement in the radial direction. By holding the closed state in which the opening 10 of the eleven is closed and then rotating the rotating drum 4 continuously at a high speed a at a high speed, it is possible to perform processing such as keren on the workpiece.

  The switching rail 23 provided on the dividing portion 22 of the lid holding rail 19 has an upper end located in front of the rotating drum 4 in the direction of the positive rotation a by the pressure of the spring 25 and protrudes inside the lid holding rail 19. Therefore, when the lid opening / closing member 18 passes through the portion of the switching rail 23 during the continuous forward rotation a of the rotary drum 4, as shown in FIG. The opening / closing member 18 passes by pushing the switching rail 23 to the closed position. When the lid opening / closing member 18 passes, the switching rail 23 returns to the open position. Such an operation is repeated.

  Next, in order to take out the object to be processed from the rotating drum 4 after the treatment of keren, the rotating drum 4 is switched to the low-speed reverse rotation b, and when the cover 11 is reversely rotated b from the upper position, the lid opening / closing member 18 is removed. Is in contact with the switching rail 23 in the open position and guided to the outside, and when the lid opening / closing member 18 is released from the restraint of the lid holding rail 19, the direction of rotation with respect to the opening 10 that rotates downward The lid 11 pivoted to the rear side of the lid 11 is suspended by its own weight to open the opening 10, and the rotating drum 4 is stopped at a position where the opened opening 10 moves downward. Is dropped and discharged by its own weight from the opened opening 10.

  At this time, as shown by a two-dot chain line in FIG. 4, the lid opening / closing member 18 of the lid 11 rotates in the direction of reverse rotation b while the lid 11 hangs down by its own weight from the trunk portion 6, thereby opening the lid opening / closing guide 20. The lid 11 is held in a posture in which the opening 10 is opened by guiding the lid opening / closing member 18 in the direction of reverse rotation b on the inner periphery of the lid opening holding part 20a.

  After discharging the object to be processed, the rotary drum 4 is rotated in the direction of reverse rotation b, and as shown by the solid line in FIG. 4, the opening 10 is stopped at a position facing the left side of the figure. Be prepared for the input of processed material.

  Next, FIGS. 9 to 15 show a second embodiment of the rotary drum device of the present invention. The same parts as those in the first embodiment described above are denoted by the same reference numerals and are not described.

  In the rotary drum device 1 according to the second embodiment, the lid holding rails are disposed at both ends of the rotary drum, and the lid switching unit and the lid are located at two positions in the middle of the lid holding rail. The opening provided in the rotating drum can be automatically opened and closed by switching between forward and reverse rotation of the rotating drum.

  As shown in FIGS. 9 to 11, the lid 11 is held in a closed state via the lid opening / closing member 18 at each of the outer positions at both ends in the axial direction of the rotary drum 4 when the rotary drum 4 is rotated forward. 4 when the lid opening / closing member 18 is released when the lid 4 is rotated in the reverse direction, and the lid opening / closing guide 42 is opened radially outward. The lid opening / closing guide 42 and the lid opening / closing guide 42 An open lid holding guide 43 located between them is arranged.

  In the second embodiment, the forward rotation a of the rotating drum 4 is clockwise in FIGS. 12 to 15, and the reverse rotation b is counterclockwise.

  The lid holding rail 41 has an inner and outer diameter that is coaxial with the rotary drum 4 and is guided in the rotational direction while restraining the lid opening / closing member 18 of the lid 11 in the closed state from moving radially outward. A first switching portion 44 for opening the lid at a position on one side which is the left side of FIG. 10 and a second switching portion for closing the lid at an upper position on the other side. 45 is provided.

  The first switching unit 44 for opening the lid is for opening the lid 11 when the rotating drum 4 in the closed state is reversely rotated, and has the same structure as the switching unit 21 of the first embodiment. The switching rail 47 provided to open and close the dividing portion 46 of the lid holding rail 41 is held at an open position that is always inclined inward by a spring 49 with a pivot 48 as a fulcrum at the rear of the rotating drum 4 in the forward rotation direction. In the closed position, the lid holding rail 41 is continuous.

  The second switching portion 45 for closing the lid is for closing the lid 11 when the rotating drum 4 in the opened state is rotated forward, and is provided so as to open and close the dividing portion 50 of the lid holding rail 41. The switching rail 51 is held at a closed position in which the pivot 52 located at the rear of the rotating drum 4 in the forward rotation direction is a fulcrum and the dividing portion 50 is always closed by a spring 53 so that the lid holding rail 41 is continuous. It can be tilted inward without opening outward from the closed position.

  The elasticity of the spring 53 that holds the switching rail 51 of the second switching portion 45 for closing the lid in the closed position is such that when the lid opening / closing member 18 is placed outside the switching rail 51 and the weight of the lid 11 is added. The switching rail 51 is set so as to move to an open position that is inclined inward.

  The lid opening / closing guide 42 has an arcuate shape with a length that extends from the position on the lower left side of FIG. 10 to the position on the upper right side with respect to the outside of the lid holding rail 41. As shown in FIG. 14, the lid 41 is opened and closed by rotating the outside of the lid holding rail 41 downward by the reverse rotation of the rotating drum 4 as shown in FIG. 14. The member 18 is fixed to the support frame 3 so as to be able to contact the inner peripheral edge thereof.

  The lid opening holding guide 43 has an arcuate shape located between the lid holding rail 41 and the lid opening / closing guide 42, the tip is located on the same horizontal line as the shaft 8 on the right side in FIG. 10, and the rear end is the rotating drum 4. The outer periphery of the lid 11 is coaxial with the rotating drum 4 in a range of 90 ° while being positioned immediately above the axis of the shaft, and the lid opening / closing member 18 of the lid 11 that is opened when the rotating drum 4 rotates backward is guided on the outer periphery. It is like that.

  At the rear end of the lid holding guide 43 positioned in front of the rotating drum 4 in the reverse rotation direction, the lid is held in a horizontal state as an extension of the lid holding guide 43 by a spring 54, and the lid opening / closing member 18 is placed on the lid 11. When the weight is added, the lid opening / closing member 18 can be tilted toward the closing lid holding rail 41, and the lid opening / closing member 18 that has moved along the opening holding guide 43 is guided toward the outer periphery of the closing lid holding rail 43. A tilt guide 55 is provided.

  The lid opening / closing member 18 received from the tilt guide 55 is rotated from the position in front of the tilt guide 55 in the reverse rotation direction of the rotary drum 4 to the position below the tilt guide 55 outside the upper portion of the lid holding rail 41. By restricting the drum 4 from moving in the reverse rotation direction, the rotary drum 4 is stopped so that the opening 10 is in a fixed direction, and the lid opening / closing member 18 is closed by the forward rotation of the rotary drum 4. The stopper part 56 which guide | induces to the outer periphery of is provided.

  This stopper portion 56 is formed by providing a stopper piece 58 at the front end portion of the guide rail 57 extending in the reverse rotation direction of the rotary drum 4 from the upper outer side of the lid holding rail 41 and facing obliquely upward. If the rotating drum 4 is stopped in a state where the lid opening / closing member 18 is transferred from the outside of the lid opening holding guide 43 to the guide rail 57 by the reverse rotation and is in contact with the stopper piece 58, the opening 10 is always directed to the left side of FIG. It can be stopped at a certain position.

  The rotary drum device 1 according to the second embodiment of the present invention has the above-described configuration, and the keren work process will be described with reference to FIGS.

  FIG. 12A shows an initial state in which the opening 10 of the rotating drum 4 is opened and the object to be processed and the kelen member are put inside, and the lid opening / closing member 18 comes into contact with the stopper piece 58 of the guide rail 57. The lid 11 is pulled up with respect to the rotating drum 4 and is held in the open position, and the rotating drum 4 is stopped at a position where the opened opening 10 is directed to the left side in FIG.

  When the object to be processed and the kelen member are introduced into the rotating drum 4 from the opening 10 and the rotating drum 4 is rotated forward a at a low speed in the clockwise direction indicated by the arrow in FIG. The lid opening / closing member 18 of the lid 11 that rotates integrally by being pulled through is guided to the upper part of the closing lid holding rail 41 so as to approach the rotating drum 4 while moving along the guide rail 57, and FIG. As shown in b), when the forward rotation continues further and the lid opening / closing member 18 is placed on the switching rail 51 of the second switching portion 45 for closing, the weight in the direction of closing the opening 10 of the lid 11 is added. The switching rail 51 is pushed inward to move to the open position, and the lid holding rail 41 is separated by the second switching portion 45 for closing.

  Since the second switching unit 45 for closing the lid is set at a position higher than the horizontal line passing through the shaft 8 of the rotary drum 4, the lid approaching the second switching unit 45 for closing the lid. 11 is in a phase in which the opening 10 is closed by its own weight with the pivot shaft 12 as a fulcrum. Therefore, the lid opening / closing member 18 moves along the outer periphery of the switching rail 51 so that the second lid closing lid 18 is closed. Thus, the lid 11 is guided to the inside of the lid holding rail 41 from the dividing portion 50 of the switching portion 45, and the lid 11 is in a closed state in which the opening 10 is closed by its own weight.

  As shown in FIG. 13C, the switching rail 51 of the second switching unit 45 for closing the lid returns to the closed position when the lid opening / closing member 18 passes, and the lid opening / closing member 18 moves to the inner periphery of the closing lid holding rail 41. Is held in a closed state in which the opening 10 of the lid 11 is closed, and thereafter the rotating drum 4 is continuously rotated at a high speed at a forward speed a. By doing so, it is possible to perform a treatment such as keren on the workpiece.

  The lid opening / closing member 18 that rotates on the inner periphery of the lid holding rail 41 during the high-speed positive rotation a of the rotating drum 4 includes a first switching portion 44 for opening and a second switching portion 45 for closing. However, in the second switching section 45 for closing the lid, the switching rail 51 is in the closed position and the lid holding rail 41 is continuous. The lid opening / closing member 18 rotates without operating the second switching portion 45.

  In the first switching portion 44 for opening the lid, the switching rail 47 is pulled by the spring 49, and the upper end side of the rotary drum 4 positioned forward in the direction of the positive rotation a projects out to the inside of the lid holding rail 41. Therefore, when the lid opening / closing member 18 passes through the portion of the switching rail 47 in the continuous forward rotation a of the rotary drum 4, as shown in FIG. 13 (c). The lid opening / closing member 18 passes by pushing the switching rail 47 to the closed position, and when the lid opening / closing member 18 passes, the switching rail 47 returns to the open position, and the continuous rotation of the rotary drum 4 is a. Repeats such an operation.

  Next, in order to take out the object to be processed from the rotary drum 4 after the treatment of keren, the rotary drum 4 is switched to the low-speed reverse rotation b, and when the lid 11 is reverse-rotated b from the state where the lid 11 is positioned above the rotary drum 4, As shown in FIG. 13D, the lid opening / closing member 18 abuts on the switching rail 47 in the open position of the first switching portion 44 for opening and is guided to the outside, and the lid opening / closing member 18 holds the lid closed. When the restraint of the rail 41 is released, the lid 11 pivoted rearward in the rotation direction with respect to the opening 10 that rotates downward opens the opening 10 by drooping under its own weight, and the opened opening The rotating drum 4 is stopped at a position where the 10 moves downward, and the object to be processed inside the rotating drum 4 is dropped and discharged by its own weight from the opened opening 10.

  At this time, as shown in FIG. 14 (e), the lid opening / closing member 18 of the lid 11 rotates in the direction of reverse rotation b while the lid 11 hangs down due to its own weight from the trunk portion 6, whereby the lid opening / closing guide 42. By contacting the inner periphery and guiding the lid opening / closing member 18 in the direction of reverse rotation b on the inner periphery, the lid 11 is maintained in the posture in which the opening 10 is opened.

  When the rotating drum 4 is rotated in the direction of reverse rotation b after discharging the workpiece, the lid opening / closing member 18 that contacts the inner periphery of the lid opening / closing guide 42 is pushed up as shown in FIG. The lid opening / closing member 18 that holds 11 in an open state at a constant angle enters between the lid opening / closing guide 42 and the opening lid holding guide 43 located inside thereof, and the pivot shaft 12 of the lid 11 is moved. When passing above the horizontal line passing through the shaft 8, the lid opening / closing member 18 is pushed so as to approach the rotating drum 4 on the upper end side of the lid opening / closing guide 42, and the lid 11 is in an upright posture with the pivot shaft 12 as a fulcrum, When the center of gravity of the lid 11 moves from the vertical axis passing through the pivot shaft 12 toward the rotating drum 4, the lid 11 falls toward the rotating drum 4, and the lid opening / closing member 18 is moved to the outer periphery of the lid opening holding guide 43 during the collapse. The lid 11 does not close the opening 10 completely. It is held in a state that fell dramatically.

  When the reverse rotation b of the rotating drum 4 continues and the lid opening / closing member 18 is placed on the tilt guide 55 as shown in FIG. 15G, the tilt guide 55 with the weight of the lid 11 tilted downward and downward It is guided on the guide rail 57 located at the position of the guide rail 57 and moved to the tip end side of the guide rail 57 to come into contact with the stopper piece 58, and in this state, the reverse rotation of the rotary drum 4 is stopped.

  As described above, when the rotating drum 4 is stopped in a state where the lid opening / closing member 18 is in contact with the stopper piece 58, the opening 10 of the rotating drum 4 is always in the initial position shown in FIG. The lid 11 can be returned and stopped, and the lid 11 is held in the open position raised up to the top of the opening 10, so that a new object can be introduced from the fully opened opening 10, and the opening 10 can be opened. The stop position accuracy in the state is improved, which is advantageous for the work of loading the workpiece.

  In addition, the rotary drum device 1 of the second embodiment is provided with the second switching portion 45 for closing the lid holding rail 41 so that the rotary drum 4 that stops in the open state is closed. When the rotating drum 4 is rotated, the rotating drum 4 is shifted to the closed state only by continuously rotating the forward rotation a. As in the rotating drum device 1 of the first embodiment, reverse rotation, stop, and forward rotation are performed. There is an advantage that the control of the rotating drum 4 can be simplified compared to the switching of the above.

  As described above, in the rotary drum device 1 of the present invention shown in the first and second embodiments, the rotary drum 4 is directly driven to rotate by the rotary drive 5, and the rotation of the rotary drum 4 is set to the positive rotation a. By switching to the reverse rotation b, the opening 10 provided in the body portion 6 of the rotating drum 4 can be automatically opened and closed by the lid 11, and lid opening / closing members 18 are attached to both ends of the lid 11. Since only the lid holding rails 19 and 41 and the lid opening / closing guides 20 and 42 or the lid opening and holding guide 43 need to be disposed at both end positions, not only the overall structure can be simplified but also the durability can be improved. It will be excellent.

DESCRIPTION OF SYMBOLS 1 Rotating drum apparatus 2 Base stand 3 Support frame 4 Rotating drum 5 Rotating drive machine 6 Body part 7 End plate 8 Shaft 9 Bearing 10 Opening 11 Lid 12 Pivoting shaft 13 Intermediate shaft 14 Lower bearing 15 Sprocket 16 Sprocket 17 Chain 18 Lid opening / closing Member 19 Closed lid holding rail 20 Cover opening / closing guide 20a Opened lid holding portion 20b Closed lid guiding portion 21 Switching portion 22 Dividing portion 23 Switching rail 24 Axis 25 Spring 31 Screening member 32 Recovery container 33 Forklift 34 Receiving bucket 35 Recovery container 36 Vertical Mold conveyor 37 Inclined passage 38 Chute 39 Shock absorber 41 Closure holding rail 42 Lid opening / closing guide 43 Lid opening holding guide 44 Opening first switching part 45 Closing second switching part 46 Dividing part 47 Switching rail 48 Axis 49 Spring 50 Dividing part 51 Switching rail 52 Axis 3 spring 54 spring 55 tilting guide 56 stopper portion 57 guide rail 58 the stopper piece a forward rotation b reverse rotation c treatment object d Keren member

Claims (5)

A rotating drum is rotatably supported through a shaft on the axis so as to rotate in the forward and reverse directions, and on the side edge of the opening provided in the body portion of the rotating drum with respect to the forward rotating direction of the rotating drum. An outer opening type lid that opens and closes the opening is pivotally mounted with an end located at the front as a fulcrum, and a lid opening and closing member is attached at a position away from the fulcrum of the lid,
Arranged coaxially with the rotating drum at a position outside the axial end surface of the rotating drum, the lid opening / closing member of the closed lid is guided in the rotating direction while restraining it from moving radially outward. An annular lid holding rail that has an inner diameter and holds the lid closed when the rotating drum is rotated forward with the lid closed,
The lid opening / closing member is guided to the inside or outside of the lid holding rail by switching between forward rotation and reverse rotation of the rotary drum at an intermediate position of the lid holding rail, and the lid is closed and opened. A rotary drum device provided with a switching unit for changing to any of the above. The switching portion provided in the middle of the lid holding rail is provided with a dividing portion in the middle of the closing lid holding rail, and a switching rail capable of holding the continuous annular state of the lid holding rail is provided in the dividing portion. Arranged and formed
The switching rail holds an open position inclined to the inside of the lid holding rail and a continuous annular state of the lid holding rail, with an end portion located rearward with respect to the positive rotation direction of the rotating drum as a fulcrum. 2. The rotating drum device according to claim 1, wherein the rotating drum device can swing between the closed positions, and the switching rail is urged to return elastically to the normally open position. A rotating drum is rotatably supported through a shaft on the axis so as to rotate in the forward and reverse directions, and on the side edge of the opening provided in the body portion of the rotating drum with respect to the forward rotating direction of the rotating drum. An outer opening type lid that opens and closes the opening is pivotally mounted with an end located at the front as a fulcrum, and a lid opening and closing member is attached at a position away from the fulcrum of the lid,
Arranged coaxially with the rotating drum at a position outside the axial end surface of the rotating drum, the lid opening / closing member of the closed lid is guided in the rotating direction while restraining it from moving radially outward. An annular lid holding rail that has an inner diameter and holds the lid closed when the rotating drum is rotated forward with the lid closed,
A first switching portion for opening the lid, which guides a lid opening / closing member located inside the lid holding rail to the outside of the lid holding rail when the rotary drum rotates in the reverse direction at the middle of the lid holding rail; A second switching unit for closing the lid that opens and closes the lid opening / closing member located outside the lid holding rail when the rotary drum rotates forward is provided. A rotating drum device that changes between a closed state and an open state by switching. The first switching portion for opening the lid provided in the middle of the lid holding rail is provided with a dividing portion in the middle of the lid holding rail, and this dividing portion holds a continuous annular state of the lid holding rail. A switching rail that can be operated, and the switching rail tilts inwardly of the lid holding rail with the end located rearward with respect to the forward rotation direction of the rotating drum as a fulcrum, and the lid It becomes possible to swing between the closed positions that hold the continuous annular state of the holding rail, and is formed by energizing the return elasticity to the normally open position on this switching rail,
The second switching portion for closing the lid is provided with a dividing portion in the middle of the closing lid holding rail, and a switching rail capable of holding the continuous annular state of the closing lid holding rail is disposed in the dividing portion. This switching rail maintains the open position that inclines inside the lid holding rail and the continuous annular state of the lid holding rail, with the end located rearward with respect to the normal rotation direction of the rotating drum as a fulcrum. 4. The rotary drum device according to claim 3, wherein the rotary drum device is swingable between the closed positions, and the switching rail is formed by urging the return elasticity to the normally closed position.   A lid opening / closing guide for guiding the lid opening / closing member is arranged on the outer side in the radial direction of the lid holding rail, and the rotating drum is installed in a state where the lid opening / closing guide is located outside the lid holding rail. When reversely rotated, the lid opening / closing member is guided so as to keep the lid open in the range where the lid rotates around the lower position of the rotating drum, and within the range where the lid rotates from the lower position toward the upper position. The rotary drum device according to any one of claims 1 to 4, wherein the lid opening / closing member is guided so that the lid falls to a closed position with respect to the opening.

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