JP2016052905A - Small component boxing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small component boxing apparatus capable of suppressing damage to a small component caused by falling of the small component put into a container, while preventing a foreign matter from entering.SOLUTION: A small component boxing apparatus comprises: a chute 14 in which a preform P falls; a rotation mechanism 20 for rotating a container 50 around a rotary shaft 21; a lifting mechanism 30 for lifting the container together with the rotation mechanism along a vertical direction by lifting the rotary shaft along the vertical direction; and a mechanism control part for controlling the rotation mechanism and the lifting mechanism. The container is located at an initial position where an opening 51 of the container is separated from the chute to a gravity direction side in the vertical direction in a state before the preform falls from the chute. The mechanism control part moves the container to an input position where at least a part of the chute enters the container through the opening of the container when the preform falls from the chute, by controlling the rotation mechanism and the lifting mechanism to raise the container from the initial position while rotating the container.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a small parts boxing apparatus for packing small parts such as preforms in a container.

  2. Description of the Related Art Conventionally, as an example of a small part, a small part boxing device is known in which a preform, which is a compression molded body of a plastic material before blow molding, is dropped into a container which is an example of a container and packed in the container. . In such a small parts boxing device, when the preform is dropped into the container by a chute or the like from above, the preform may be damaged by the impact due to the drop. If the preform is damaged, the bottle container after blow molding will also be damaged.

  Therefore, when a large number of preforms (work pieces) are packed in the container, the container having the opening is rotated to incline the container, and the input conveyor (work transfer portion) enters the container from the inclined opening of the container. A small parts boxing device (work boxing device) for loading (transferring) a workpiece into a container has been proposed (see, for example, Patent Document 1).

JP 2005-247344 A

  However, the conventional small component boxing apparatus has a configuration in which a feeding conveyor having a movable portion such as a belt conveyor and a roller enters the container, and the preform is loaded (transferred) into the container. Furthermore, it has the structure which moves the input conveyor which has a movable part in a container by a slide mechanism. With such a configuration, damage to the preform due to dropping is suppressed, but there is a problem that the apparatus becomes more complicated than the introduction of the preform due to dropping using a chute. In addition, since the input conveyor that enters the container has a movable part, foreign substances other than the preform existing in the movable part may be input into the container. As a result, there is a problem that parts (foreign matter) other than the preform are mixed in the container.

Such a situation is generally common in small-part packaging devices that pack small items into the container through the opening of the container.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a small component box capable of suppressing damage caused by falling small components placed in a container while suppressing the introduction of foreign matters. It is to provide a filling device.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A small parts boxing device that solves the above problems is a small parts boxing apparatus that packs small parts into the container from the opening of the container, and has a slant surface on which the small parts fall due to gravity. A rotating mechanism that rotates the container around a rotating shaft that has an axis that penetrates the container in the horizontal direction, and the container along the vertical direction along with the rotating mechanism by moving the rotating shaft up and down along the vertical direction. And a mechanism control unit that controls the rotating mechanism and the lifting mechanism, and the container is in a state before the small parts are dropped from the chute with respect to the chute. The opening of the container is at an initial position away from the gravity direction side in the vertical direction, and the mechanism control unit controls the rotating mechanism and the lifting mechanism to rotate the container. While by increasing from the initial position, moving the container from the chute to the loading position at least partially enters into the container from an opening of the container of the chute in a state in which the small parts can fall.

  According to this configuration, the small parts are put into the container by free fall from the chute, and the distance to which the small parts fall is shortened by entering the chute into the container. It is possible to suppress damage due to the drop of small parts thrown into the box.

  In the above small component packaging apparatus, the mechanism control unit moves the container until the inner surface of the container located on the gravity direction side of the chute is parallel to the inclined surface of the chute at the loading position. It is preferable to be able to make it.

  According to this structure, since the fall distance of small parts between the chute that has entered the container and the container located on the gravity direction side can be made almost the shortest, it falls into the container and is thrown in. Damage to small parts can be further suppressed.

  In the above-described accessory component boxing device, the movable component has a movable portion, and includes a movable conveyance mechanism that conveys the small component component to the chute by the movable portion, and the movable conveyance mechanism opens the container as viewed from the vertical direction. It is preferable to have the movable part at a position that does not overlap with the moving part.

  According to this configuration, the small parts are transported to the chute by the movable transport mechanism, and even if foreign matters other than the small parts fall from the movable portion, the fallen foreign matters are suppressed from entering the container.

  In the above-described accessory parts boxing device, the apparatus includes a horizontal movement mechanism that is controlled by the mechanism control unit and moves the container to the initial position by moving the container in a horizontal direction that intersects the vertical direction. It is preferable that the container is moved up and down together with the container by the lifting mechanism.

According to this configuration, the container can be moved to the initial position while the container is raised by the horizontal movement mechanism.
In the above small parts boxing device, the horizontal movement mechanism is rotated around the rotation axis together with the container, and the center of the rotation axis is closer to the horizontal movement mechanism than the shape center in a side view of the container. Preferably it is located.

  According to this configuration, since the rotational torque when rotating the container is suppressed so as not to increase, the container can be smoothly rotated by the rotation mechanism.

FIG. 3 is a front view of the accessory component packaging device of the embodiment, and is a schematic configuration diagram shown in a section taken along line 1-1 in FIG. 2. FIG. 2 is a plan view of the accessory component packaging device of the embodiment, and is a schematic configuration diagram shown in a section taken along line 2-2 in FIG. 1. It is the side view which looked at the accessory parts boxing apparatus of embodiment from the conveyance direction downstream of a container, and is a schematic block diagram with which one part member was abbreviate | omitted while being shown with the cross section by the 3-3 arrow in FIG. FIG. 4 is a front view of the accessory parts boxing apparatus showing a state in which the container has moved to a preform charging position, and is a schematic configuration diagram shown in a section taken along line 4-4 in FIG. (A)-(c) is a schematic diagram which shows the fall state of the preform which falls to a container. (A), (b) is a schematic diagram which shows the container which moves with a horizontal movement mechanism.

  Hereinafter, with reference to the drawings, an embodiment of the accessory parts boxing apparatus will be described. The accessory parts boxing apparatus of this embodiment is an accessory parts boxing apparatus that puts a preform, which is an example of an accessory part, into a bottomed box-like container, which is an example of a container, and boxes it. In the following description, the accessory parts boxing device is simply referred to as “boxing device”.

  As shown in FIGS. 1, 2, and 3, the boxing device 11 includes a device frame 12 configured by a plurality of prismatic members having a rectangular cross section, and the container 50 has an opening 51 with antigravity. It is provided with a transport mechanism 13 that carries in from the one side in the substantially horizontal direction to the device frame 12 and carries out from the other side opposite to the one side in a posture facing the direction + Z side (upper side). The transport mechanism 13 is composed of a plurality of rotating rollers 13R, at least one of which is rotationally driven by a driving source (not shown), and the container 50 is formed by the upper surfaces of the plurality of rotating rollers 13R as the rotating rollers 13R rotate. The transfer surface is moved in the transfer direction Y indicated by a solid solid arrow in the figure.

  In the boxing device 11, the preform P is transferred from the chute 14 positioned above the container 50 to the container 50 that is carried into the device frame 12 by the transport mechanism 13 and moved to a predetermined position in the device frame 12. Falls. The preform P dropped from the chute 14 is boxed by being put into the container 50 through the opening 51 of the container 50. The preform P has, for example, a shape illustrated in a circular region indicated by a symbol M in FIG. 1, and the shape is simplified here and illustrated in an elliptical shape in each drawing.

  Specifically, the boxing device 11 is bent at a substantially right angle at both ends of the inclined surface 14S where the preform P drops due to gravity and the inclined surface 14S in a direction intersecting the dropping direction. A chute 14 having a fixed side wall 14G is fixedly attached. A multi-stage (two-stage here) moving conveyor 15 that moves the preform P to the inclined surface 14S of the fixed chute 14 is provided as a movable transfer mechanism.

  The moving conveyor 15 has a conveyor belt 15A and a belt driving roller (not shown) that moves the conveyor belt 15A as movable parts, and on both sides in the direction intersecting the moving direction of the conveyor belt 15A, the belt of the preform P A guide wall 15G is provided to prevent the fall of the camera. Therefore, the preform P is conveyed to the chute 14 by the conveyor belt 15A that moves as indicated by the outlined broken line arrow in the drawing by the rotation of the belt driving roller. The moving conveyor 15 is provided at a position where the conveyor belt 15 </ b> A and the belt driving roller serving as movable parts do not overlap with the opening 51 of the container 50 moved to a predetermined position when viewed from the vertical direction.

  In the boxing device 11 of the present embodiment, by swinging around the swing shaft 16a, a state that constitutes a part of the inclined surface 14S of the chute 14 and a state that becomes an intersecting surface that intersects the inclined surface 14S. A stopper 16 that can be displaced between the two is disposed at the end of the chute 14 on the moving conveyor 15 side. In addition, the rocking shaft 16a portion of the stopper 16 is a movable portion, and the gravity direction -Z side (lower side) is a hole portion 14H in which the inclined surface 14S is not formed. And this hole 14H is formed in the position which does not overlap with the opening 51 of the container 50 which moved to the predetermined position seeing from the perpendicular direction.

  When the preform P is not boxed in the container 50, the stopper 16 is in a state of crossing the inclined surface 14S so as to prevent the preform P from falling on the inclined surface 14S. . On the other hand, when the preform P is boxed in the container 50, the stopper 16 forms a part of the inclined surface 14S so that a predetermined number of the preforms P carried by the moving conveyor 15 are chuteed 14. It will be in the cancellation | release state which naturally falls along 14S of inclined surfaces.

  The container 50 in which the preform P is packed in this way is unloaded from the apparatus frame 12 and further conveyed to the unloading table 17 provided on the conveying direction Y side by the transfer mechanism 13. Stop at the position. Then, the stopped container 50 is taken out from the boxing apparatus 11 for the next process (for example, blow molding process). In the transport mechanism 13, the container 50 is placed on the pallet 55 and transported as necessary, as indicated by a two-dot chain line in FIG. 3. Incidentally, in this embodiment, the container 50 is transported without being placed on the pallet 55.

  The boxing device 11 according to the present embodiment drives the rotary shaft 21 having an axis that penetrates the container 50 moved to a predetermined position by the transport mechanism 13 when the preform P is put into the container 50. A rotation mechanism 20 is provided that rotates around the rotation shaft 21 by being rotated by driving the source. Further, an elevating mechanism 30 that elevates and lowers the container 50 moved to a predetermined position together with the rotating mechanism 20 by moving the rotating shaft 21 up and down (up and down) along the vertical direction by driving the drive source.

  In the present embodiment, the container 50 is configured to be maintained on the rotating roller 13 </ b> R of the transport mechanism 13 during the raising / lowering and rotation of the rotating shaft 21. That is, a part of the transport mechanism 13 is separated from other parts and is configured to move up and down and rotate together with the container 50, and the part of the transport mechanism 13 to be separated is moved up and down of the rotary shaft 21 or The horizontal movement mechanism 13H is capable of moving the container 50 along the conveyance surface during rotation.

  And the boxing apparatus 11 is provided with the mechanism control part 40 (refer FIG. 3) which controls the horizontal movement mechanism 13H (conveyance mechanism 13), the rotation mechanism 20, and the raising / lowering mechanism 30. FIG. Specifically, the mechanism control unit 40 includes a control circuit that controls the drive source of the horizontal movement mechanism 13H, the drive source of the rotation mechanism 20, and the drive source of the elevating mechanism 30, and each drive source is controlled by the control circuit. As a result, the container 50 is moved in the transport direction Y, and the container 50 is rotated and moved up and down. Hereinafter, the configurations of the lifting mechanism 30 and the rotating mechanism 20 will be described.

First, the configuration of the lifting mechanism 30 will be described.
In the apparatus frame 12, prismatic guide members 18 extending along the vertical direction on both sides of the width direction X intersecting the transport direction Y of the container 50 are spaced apart from each other in the transport direction Y. Two each, that is, a total of four are attached. An elevating frame 31 that elevates and lowers in the apparatus frame 12 in the vertical direction while sliding with respect to the four guide members 18 is provided.

  The elevating and lowering frame 31 has a structure that is framed in a substantially box shape by a plurality of square prism members having a smaller cross-sectional area than the device frame 12. At the four corners of the box shape as viewed from above, plate-like upper collar portions 32 and lower collar portions 33 reinforced by bending the ends are provided, respectively. A chain belt made of a roller chain is attached to the flange portion 33.

  Specifically, one end of each of the first chain belt 34 and the second chain belt 35 is attached to the upper collar portion 32. Among these, the first chain belt 34 includes an upper first chain wheel 34 </ b> A that is rotatably attached to the upper end of the device frame 12, and a lower first chain wheel that is rotatably attached to the lower end of the device frame 12. 34B, and the other end is attached to the lower collar portion 33. Therefore, the first chain belt 34 operates as a ring-shaped chain belt stretched around the upper first chain wheel 34A and the lower first chain wheel 34B.

  A relay member 36 that moves up and down in the direction opposite to the lifting frame 31 is attached to the first chain belt 34 between the belts from the upper first chain wheel 34A to the lower first chain wheel 34B. The relay member 36 has a predetermined weight and functions as a weight balancer for balancing with the weights of the lifting frame 31 and the container 50.

  The other end of the second chain belt 35 having one end attached to the upper collar 32 is opposite to the width direction X intersecting the transport direction Y with respect to the upper collar 32 to which one end of the second chain belt 35 is attached. The first chain belt 34 attached to the upper collar portion 32 located on the side is attached to a relay member 36 attached between the belts. The second chain belt 35 having both ends attached in this manner is stretched over two upper second chain wheels 35A that are rotatably attached to the upper side of the device frame 12. Therefore, the lifting frame body 31 is suspended by the four second chain belts 35.

  In the present embodiment, at least one of the upper first chain wheel 34A and the lower first chain wheel 34B is rotated by driving of a drive source such as a motor (not shown). The drive of the drive source is controlled by the mechanism control unit 40. As shown by a solid line arrow in FIG. 3, the right upper first chain wheel 34A as viewed from the downstream side in the transport direction Y rotates in the clockwise direction, and the left side The upper first chain wheel 34A rotates counterclockwise, so that the relay member 36 is lowered. On the contrary, the elevating frame body 31 suspended by the second chain belt 35 having the other end attached to the descending relay member 36 ascends in the antigravity direction + Z. On the other hand, as shown by a broken line arrow in FIG. 3, when viewed from the downstream side in the transport direction Y, the right upper first chain wheel 34A rotates counterclockwise, and the left upper first chain wheel 34A rotates clockwise. By rotating, the relay member 36 rises. The elevating frame 31 that is suspended by the second chain belt 35 having the other end attached to the rising relay member 36 is lowered in the gravity direction −Z.

  The elevating frame 31 is formed in a U shape in which the side wall portions 31A on both sides in the width direction X intersecting the transport direction Y are higher than the other portions when viewed from the downstream side in the transport direction Y of the container 50. . And the bearing 37 which pivotally supports the rotating shaft 21 which makes the width direction X which cross | intersects the conveyance direction Y an axis line is provided in the upper end of each side wall part 31A of this raised both sides. Therefore, the elevating frame 31 raises and lowers the rotating shaft 21 supported by the bearing 37 along the vertical direction as the elevating frame 31 moves up and down. In addition, when the lifting frame body 31 is raised and lowered, the plurality of guide rollers 31R attached to the lifting frame body 31 slide while being in contact with the guide member 18, so that the lifting frame body 31 is stably in the apparatus frame 12. Go up and down. The elevating mechanism 30 is configured in this way.

Next, the configuration of the rotation mechanism 20 will be described.
The rotating mechanism 20 according to the present embodiment is provided in the lifting frame 31, and the container 50 that has been moved to a predetermined position in the apparatus frame 12 by the transport mechanism 13 is moved horizontally along with a part of the transport mechanism 13. The rotating shaft 21 having an axis extending in the direction is rotated. At this time, the rotation mechanism 20 rotates the horizontal movement mechanism 13H, which is a part of the transport mechanism 13 of the container 50, around the rotation shaft 21 together with the container 50.

  That is, in the elevating frame body 31, a rotating frame body 22 that is rotatable about a rotating shaft 21 provided in a part thereof is provided. The rotating frame body 22 has a structure in which a plurality of prismatic members having a quadrangular cross-sectional area smaller than that of the elevating frame body 31 are combined. The rotary frame body 22 has a substantially U-shape having standing wall portions 22A and bottom portions 22B on both sides in the width direction X intersecting the transport direction Y when viewed from the downstream side in the transport direction Y of the container 50. Further, in the standing wall portions 22A on both sides in the width direction X, the rotation shafts 21 are provided so that the axis lines are the same and the width direction X (horizontal direction) intersects the transport direction Y. Accordingly, the two rotary shafts 21 have axes that penetrate the container 50 moved to a predetermined position in the rotary frame 22 in the horizontal direction.

  These two rotary shafts 21 are rotatably supported by bearings 37 of the elevating frame 31, and a driven pulley 21 </ b> A is fixed to at least one of the rotary shafts 21. In the present embodiment, the driven pulleys 21 </ b> A are fixed to both the rotating shafts 21. The elevating frame 31 is provided with a motor 41 as a drive source in which a drive pulley 41A is fixed to the drive shaft, and a drive belt 42 is stretched between the drive pulley 41A and the driven pulley 21A. . The drive belt 42 is configured to be pressed inward by two tension pulleys 42A attached to the elevating frame 31 so as to be in a tensioned state without slack.

  The rotating frame body 22 has, on its bottom portion 22B, a horizontal movement mechanism 13H that is a part constituting the conveyance mechanism 13, and a regulation plate 13G that regulates the movement of the container 50 in the width direction X intersecting the conveyance direction Y. Is fixed. Further, the bottom 22B of the rotating frame 22 is provided with a first movement restraining mechanism 23 that restrains the container 50 from moving from a predetermined position to the transport direction Y side along the transport surface of the horizontal movement mechanism 13H. Yes. Further, a second movement restraining mechanism that restrains the container 50 from moving from a predetermined position to the transport direction Y side along the transport surface of the horizontal movement mechanism 13H on each of the standing wall portions 22A of the rotary frame body 22A. 26 is provided.

  The first movement suppression mechanism 23 jumps out or retracts from the transport surface (the upper surface of the rotating roller 13R) of the container 50 in the horizontal movement mechanism 13H by the first actuator 24 that operates by hydraulic pressure or air pressure, and the first actuator 24. And a first restraining plate 25 that is moved in this manner. Then, as shown by a two-dot chain line in FIG. 3, the first restraining plate 25 protrudes from the transport surface of the container 50 in the horizontal movement mechanism 13 </ b> H, so that on the downstream side surface in the transport direction Y of the container 50, It abuts at least a portion of its bottom.

  The second movement restraining mechanism 26 includes a second actuator 27 that expands and contracts by hydraulic pressure and air pressure, and the second actuator 27 is connected to one end thereof, and swings with the swing shaft 28a as a fulcrum as the second actuator 27 expands and contracts. The moving plate 28 and a second restraining plate 29 fixed to the other end of the swinging plate 28 are provided. The second restraining plate 29 is moved so as to approach the container 50 by the swinging of the swinging plate 28, so that at least a part of both end portions in the width direction X on the downstream side surface in the transport direction Y of the container 50. Abut.

  Therefore, the movement of the container 50 in the transport direction Y in the rotating frame 22 is performed by one first inhibition plate 25 of the first movement inhibition mechanism 23 and each second inhibition plate 29 of the two second movement inhibition mechanisms 26. And deterred by. The container 50 is moved to a predetermined position in the apparatus frame 12 by moving to a predetermined position where the container 50 is restrained. Of course, when the container 50 is moved from the initial position to the transport direction Y side, the one first restraining plate 25 and the two second restraining plates 29 are separated from the container 50 so as not to prevent the movement of the container 50. To move.

  In the present embodiment, the predetermined position on the rotating frame 22 is in a state before the preform P falls into the container 50 and starts to move to the loading position where the preform P is loaded into the container 50. The initial position to be used. The center of the rotating shaft 21 is the shape (rectangular shape) of the container 50 in a side view when the container 50 is moved to the initial position in the rotating frame 22 when viewed from the axial direction of the rotating shaft 21, that is, the width direction X. It is located closer to the horizontal movement mechanism 13H than the center SC. The rotation mechanism 20 is configured in this way.

  In the boxing device 11 having the lifting mechanism 30 and the rotating mechanism 20 configured as described above, after the container 50 moves to the initial position in the rotating frame body 22, the lifting frame body 31 rises along the vertical direction. Accordingly, the rotary frame body 22 in which the rotary shaft 21 is pivotally supported by the bearing 37 of the elevating frame body 31 also rises together. At this time, the rotation frame 21 is rotated by the rotation of the rotation shaft 21 provided on the rotation frame 22.

  As shown in FIG. 4, in the boxing device 11, the container 50 that has moved to the initial position (predetermined position) of the rotating frame body 22 is both raised and rotated as indicated by the broken-line arrows in the drawing of the rotating frame body 22. By the movement, at least a part of the chute 14 moves to the charging position where it enters the container 50. In other words, the container 50 is disposed between the chute 14 and the container 50 in a state where the preform P falls from the chute 14 from an initial position where the opening 51 of the container 50 is separated from the chute 14 toward the gravity direction −Z side in the vertical direction. Move to the close position where the distance between them is close. Of course, the movement of the container 50 from the initial position to the loading position is performed by the mechanism control unit 40 controlling the rotation mechanism 20 and the lifting mechanism 30.

  In the present embodiment, the chute 14 is located downstream of the container 50 in the transport direction Y. Therefore, when the mechanism controller 40 moves the opening 51 of the container 50 closer to the chute 14, the mechanism 51 rotates the rotating shaft 21 so that the downstream side in the transport direction Y of the opening 51 moves in the gravitational direction −Z from the upstream side. Let For this reason, the conveyance surface of the container 50 in the horizontal movement mechanism 13 </ b> H provided in the rotating frame body 22 is an inclined surface that is first lowered toward the downstream side in the conveyance direction Y.

  Next, the operation of the boxing device 11 will be described with reference to FIGS. 5 (a), 5 (b), and 5 (c). 5A, 5 </ b> B, and 5 </ b> C, the rotating shaft 21 is illustrated thickly and the configuration related to the container 50 and the chute 14 is illustrated for easy understanding, and the rotating frame body is illustrated. Components such as 22 and the lifting frame 31 are not shown.

  As shown in FIG. 5A, the mechanism control unit 40 controls the elevating mechanism 30 and the rotating mechanism 20 to rotate the rotating shaft 21 while raising it. That is, the rotating shaft 21 is raised and rotated as indicated by a broken line arrow in the figure, and the container 50 is moved from the initial position indicated by the two-dot chain line in the figure to the charging position indicated by the solid line in the figure. By this movement, the container 50 moves so that the opening 51 faces the chute 14 side, and at least a part of the chute 14 enters the container 50.

  In the present embodiment, as shown in FIG. 5A, the mechanism control unit 40 is configured so that the inner surface 52 of the container 50 located on the gravity direction −Z side of the chute 14 is inclined at the closing position. The container 50 is moved to a state approximately parallel to the surface 14S. Of course, although not shown here, the mechanism control unit 40 can move the container 50 to a state where the inner side surface 52 of the container 50 is parallel to the inclined surface 14S of the chute 14 at the closing position. is there.

  Thereafter, in the approaching chute 14, the stopper 16 provided on the chute 14 is released, and a plurality of preforms P fall along the inclined surface 14S of the chute 14 as shown by the shaded area in the figure, The injection of the preform P into the container 50 is started. At this time, the drop height H2 of the preform P put into the container 50 is considerably smaller than the drop height H1 when the preform P is dropped with respect to the container 50 located in the initial state. Therefore, the impact force applied to the falling preform P as it falls is weakened, and damage to the preform P is suppressed.

  Next, as shown in FIG. 5B, the mechanism control unit 40 gradually lowers the rotating shaft 21 while gradually rotating the rotating shaft 21 in the direction opposite to the upward direction. To control. That is, the rotary shaft 21 is lowered and rotated as indicated by the broken line arrow in the figure, and moves from the charging position where the charging is indicated by the two-dot chain line in the figure to the charging position during the charging indicated by the solid line in the figure. By this movement, the container 50 moves so that the opening 51 gradually leaves the chute 14. In the present embodiment, in a state where the preform P is being put in, at least a part of the chute 14 enters the container 50 from the opening 51.

  Even when the opening P of the container 50 is separated from the chute 14 from the start of charging during the charging of the preform P into the container 50, a plurality of previously loaded products are placed in the container 50. The reform P is deposited as shown by the shaded area in the figure. For this reason, the fall height H3 of the preform P is smaller than the fall height H1 when the preform P is dropped with respect to the container 50 positioned in the initial state. The accompanying impact force is weakened, and damage to the preform P is suppressed. In other words, the mechanism control unit 40 controls the elevating mechanism 30 and the rotating mechanism 20 to rotate the rotating shaft 21 while lowering the rotating shaft 21 so that the fall height becomes a height at which damage to the preform P is suppressed. .

  Then, as shown in FIG. 5C, the mechanism control unit 40 controls the elevating mechanism 30 and the rotating mechanism 20 to gradually lower the rotating shaft 21 while rotating gradually in the direction opposite to the upward direction. The container 50 is moved to the initial position. That is, the rotary shaft 21 is lowered and rotated as indicated by the broken line arrow in the figure, and the container 50 is moved from the position in the middle of insertion shown by the two-dot chain line in the figure to the initial position indicated by the solid line in the figure. By this movement, the container 50 moves so that the opening 51 gradually moves away from the chute 14, and the chute 14 is in the original separated state where it does not enter the container 50.

  Thereafter, in a state where the container 50 is returned to the initial position, the remaining number of preforms P is continuously dropped from the chute 14 and put into the predetermined number of pieces put into the container 50. At this time, in the container 50, a plurality of preforms P that have already been put are accumulated as shown by the shaded area in the figure. For this reason, the fall height H4 of the preform P from the chute 14 is considerably smaller than the fall height H1 when the preform P is dropped with respect to the container 50 located in the initial state. The impact force applied to P as it falls is weakened, and damage to the preform P is suppressed.

  Further, as shown in FIGS. 5A and 5B, in a state where the preform P is put into the container 50, the transport surface of the container 50 in the horizontal movement mechanism 13 </ b> H provided in the rotating frame 22 is The inclined surface is inclined downward toward the downstream side in the transport direction Y. For this reason, the bottom surface of the container 50 tries to move toward the transport direction Y side by sliding on the rotating roller 13R of the horizontal movement mechanism 13H. At this time, the movement of the container 50 about to move in the transport direction Y side is inhibited by the first inhibition plate 25 of the first movement inhibition mechanism 23 and the two second inhibition plates 29 of the second movement inhibition mechanism 26. (See FIG. 4).

  Further, as shown in FIGS. 5A, 5B, and 5C, the portion of the swing shaft 16a as the movable portion of the stopper 16 disposed on the chute 14 is positioned on the gravity direction −Z side. The hole 14 </ b> H is in a position where it does not overlap the opening 51 of the container 50 when viewed from the vertical direction. Therefore, even if a foreign object falls, it does not fall on the inclined surface 14S, and is also prevented from entering the container 50. Of course, the moving conveyor 15 as a movable part (not shown in FIGS. 5A, 5B, and 5C) is also located at a position that does not overlap the opening 51 of the container 50 when viewed from the vertical direction. Even if it falls, entry into the container 50 is suppressed (see FIG. 1).

According to the above embodiment, the following effects can be obtained.
(1) The preform P is thrown into the container 50 by free fall from the chute 14, and the fall distance of the preform P is shortened by the entry of the chute 14 into the container 50. However, damage due to the fall of the preform P put into the container 50 can be suppressed.

  (2) When the inner side surface 52 of the container 50 located on the gravity direction side of the chute 14 is substantially parallel or parallel to the inclined surface 14S of the chute 14, the chute 14 entering the container 50 and the gravity direction side thereof The fall distance of the preform P between the container 50 located can be made the shortest. As a result, it is possible to further suppress the damage to the preform P dropped into the container 50.

  (3) Since the movable conveyance mechanism has a movable portion at a position that does not overlap the opening 51 of the container 50 when viewed from the vertical direction, the preform P is conveyed to the chute 14 by the movable conveyance mechanism, and the preform is transferred from the movable portion to the preform. Even if foreign matter other than P falls, the fallen foreign matter is prevented from entering the container 50.

  (4) Since the center of the rotating shaft 21 of the rotating frame body 22 is positioned closer to the horizontal movement mechanism 13H than the shape center SC in the side view of the container 50, the container 50 is positioned at a predetermined position (initial position) of the rotating frame body 22. ) Is the same as or substantially the same as the center of gravity of the rotary frame 22 in the state of being moved to (). As a result, since the rotational torque at the time of rotating the container 50 is suppressed so as not to increase, the container 50 can be smoothly rotated by the rotation mechanism 20.

In addition, you may change the said embodiment into another embodiment as follows.
In the above embodiment, the mechanism control unit 40 controls the horizontal movement mechanism 13 </ b> H that moves up and down with the container 50 by the lifting mechanism 30 when the lifting mechanism 30 and the rotating mechanism 20 are controlled to rotate while rotating the rotating shaft 21. The container 50 may be controlled to move in the transport direction Y side.

  For example, as shown in FIG. 6A, the container 50 that moves in the transport direction Y by the horizontal movement mechanism 13H (conveyance mechanism 13) is indicated by a two-dot chain line in the figure due to, for example, slip between the rotation roller 13R and the like. There is a case where the actuator stops at a position before the initial position by the dimension L1. In such a case, the center of gravity of the rotating frame 22 including the container 50 is located far from the center of the rotating shaft 21 although illustration is omitted here. For this reason, the load (torque) for rotating the rotating frame body 22 becomes large, and it is difficult to rotate it smoothly. Further, since the position of the opening 51 of the container 50 is separated from the chute 14 in the upstream in the transport direction Y, the chute 14 may not enter the opening 51 of the container 50 when the rotating shaft 21 is raised and rotated. There is also.

  Therefore, as shown in FIG. 6B, the mechanism control unit 40 controls the elevating mechanism 30 to raise the rotary shaft 21 (horizontal movement mechanism 13H) by the dimension L2 in which the container 50 contacts the chute 14, for example. In the meantime, the horizontal movement mechanism 13H is controlled to move the container 50 in the transport direction Y by the dimension L1 to move the container 50 to the initial position. Or although illustration is abbreviate | omitted here, the mechanism control part 40 controls the raising / lowering mechanism 30 and the rotation mechanism 20, and moves horizontally while raising and rotating the rotating shaft 21 until the container 50 contact | abuts to the chute | shoot 14. The mechanism 13H may be controlled to move the container 50 in the transport direction Y by the dimension L1 and move the container 50 to the initial position.

According to this modification, in addition to the effects (1) to (4) of the above embodiment, the following effects are obtained.
(5) The container 50 can be moved to the initial position while the container 50 is being lifted by the horizontal movement mechanism 13H that is lifted and lowered together with the container 50 by the lifting mechanism 30.

  In the above embodiment, the center of the rotating shaft 21 of the rotating frame body 22 is not necessarily located closer to the horizontal movement mechanism 13H than the shape center SC in the side view of the container 50. For example, the center of the rotating shaft 21 of the rotating frame body 22 may coincide with the shape center SC in the side view of the container 50.

  In the above embodiment, the horizontal movement mechanism 13 </ b> H does not necessarily have to be lifted / lowered together with the container 50 by the lifting / lowering mechanism 30. That is, only the container 50 transported to the initial position in the horizontal movement mechanism 13H is configured to move away from the horizontal movement mechanism 13H as the rotating frame body 22 is lifted, and the horizontal movement mechanism 13H is a part of the transport mechanism 13. May be maintained. If it carries out like this, the drive load of the drive source in the raising / lowering mechanism 30 or the rotation mechanism 20 can be reduced.

  In the above embodiment, the boxing device 11 does not necessarily have to include the moving conveyor 15 as a movable conveyance mechanism that conveys the preform P to the chute 14. For example, the preform P may be moved to the chute 14 by another chute using natural fall that does not have a movable part.

  In the above embodiment, the stopper 16 as the movable part does not necessarily have to be disposed on the chute 14. For example, the stopper 16 may be provided on the moving conveyor 15. Alternatively, when only a predetermined number of small parts for each container 50 are conveyed by the moving conveyor 15, the stopper 16 may not be provided. By so doing, it is possible to further suppress the foreign matter falling into the container 50 from the movable part.

  In the above-described embodiment, the mechanism control unit 40 does not necessarily include the inner side surface 52 of the container 50 positioned on the gravity direction side of the chute 14 when the inner bottom surface of the container 50 is shallow, for example. The container 50 may not be moved to a state in which the chute 14 is parallel to the inclined surface 14S. In short, the container 50 may be moved up and rotated until the preform P falling into the container 50 is not damaged.

  In the above embodiment, the container 50 may be transported in a state of being placed on the pallet 55 as shown in FIG. In this case, it is preferable to adjust the position of the rotary shaft 21 of the rotary frame body 22 according to the weight of the pallet 55. In this case, it is preferable that the first restraining plate 25 restrains the movement of the pallet 55.

  In the above embodiment, the mechanism control unit 40 controls the rotation mechanism 20 and the elevating mechanism 30 to raise and lower (rotate) the rotating shaft 21 when rotating and lowering the container 50. It may be performed in parallel at the same time, or rotation and ascending (decreasing) may be performed alternately. Moreover, you may perform any one of rotation and the raise (fall) of the rotating shaft 21 previously. Or you may carry out combining these. In particular, when the container 50 is lowered while rotating, the rotation and lowering of the rotary shaft 21 are adjusted so that the injected preform P does not concentrate and fall in one place in the container 50. Is preferred.

  DESCRIPTION OF SYMBOLS 11 ... Small parts boxing apparatus, 13H ... Horizontal moving mechanism, 14 ... Chute, 14S ... Inclined surface, 15 ... Moving conveyor (movable part), 16a ... Oscillating shaft (moving part), 20 ... Rotating mechanism, 21 ... Rotation Axis, 30 ... elevating mechanism, 40 ... mechanism control unit, 50 ... container (example of container), 51 ... opening, 52 ... inner surface, P ... preform (example of small parts), SC ... shape center, -Z ... Gravity direction.

Claims (5)

A small parts boxing device that packs small parts into the container from the opening of the container,
A chute having an inclined surface on which the accessory part falls due to gravity;
A rotation mechanism for rotating the container around a rotation axis having an axis extending horizontally through the container;
An elevating mechanism that elevates and lowers the container along the vertical direction together with the rotating mechanism by elevating and lowering the rotation axis along the vertical direction;
A mechanism control unit for controlling the rotation mechanism and the elevating mechanism;
With
The container is in an initial position where the opening of the container is away from the chute on the gravity direction side in the vertical direction before the small parts fall from the chute,
The mechanism control unit controls the rotating mechanism and the elevating mechanism to raise the container from the initial position while rotating the container, so that at least one of the chutes in the state where the small parts fall from the chute. A small parts boxing device that moves the container to a loading position where the portion enters the container from the opening of the container.   2. The mechanism control unit is capable of moving the container to a state where an inner surface of the container located on the gravity direction side of the chute is parallel to an inclined surface of the chute at the charging position. Small parts boxing device described in 1. It has a movable part, provided with a movable conveyance mechanism that conveys the small parts to the chute by the movable part,
The small parts boxing device according to claim 1, wherein the movable conveyance mechanism has the movable portion at a position that does not overlap with the opening of the container as viewed from the vertical direction. A horizontal movement mechanism controlled by the mechanism control unit and moving the container to the initial position by moving the container in a horizontal direction intersecting a vertical direction;
The small parts boxing device according to any one of claims 1 to 3, wherein the horizontal movement mechanism is moved up and down together with the container by the lifting mechanism.   The accessory according to claim 4, wherein the horizontal movement mechanism is rotated around the rotation axis together with the container, and the center of the rotation axis is located closer to the horizontal movement mechanism than the shape center in a side view of the container. Parts packaging equipment.