JP2020029370A - Sorting device - Google Patents

Abstract

To provide a sorting device that reduces occurrence of slip during high speed rotation, ensures smooth rotation, and reduces internal stress on a component, thereby securing sufficient strength.SOLUTION: The sorting device includes: a shaft 2 that is approximately orthogonal to the transportation direction in which an article to be transported is loaded and transported; a fixing part 3 that has a shaft to be anchored to the shaft and an inclined disk with a predetermined angle; an annular rotary body 11 that has an outer peripheral face that pivotally contacts the bottom of the article to be transported and is pivotally provided around the shaft in a freely rotatable manner; a driving rotary body 4 that abuts the side face in the proximity of the outer periphery of the annual rotary body at a predetermined angle; and means that allows a sorting direction to be arbitrarily selected by rotating the shaft integrated with the anchoring part in an arbitrary manner. The driving rotary body and the anchoring part are held in a closely contacting condition by closely contacting condition keeping means, and thereby the annular rotary body and the driving rotary body pivotably provided in the freely rotatable manner against the anchoring part keep a smoothly rotating condition concentrically with the shaft in a constant closely contacting condition all the time.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a sorting conveyor switching device.

  In the field of logistics, there are cases where articles with various shapes (external shape and size) are conveyed and sorted in a mixed manner, and there is a strong demand for higher-speed conveyance to improve their work efficiency. The conveyor speed, which used to be transported at a speed of about 40 m / min to 60 m / min before, has recently been increased to about 90 m / min to 100 m / min, and is expected to be further increased in the future.

  Patent Document 1 discloses a sorting device using a rotating disk having a desired inclination angle, and Patent Document 2 discloses a plurality of specific configuration proposals in which a rotary driving body corresponding to the inclination transmits a rotational force to the rotating disk. It has been disclosed.

  Specifically, as a structure in which the rotating disk rotates, the side surface of the cylindrical rotating driver or the drum-shaped rotating driver having a small outer diameter at the center portion and a large outer diameter at both ends and the outer peripheral flat portion of the rotating disk are applicable. There are three main cases: a contact structure, a structure via a pulley, and a rotary drive having the same inclination that presses against an inclined surface.

  Here, in the first structure, the pressure contact direction is perpendicular to the rotation axis, a stable force is applied to the surface of the rotating disk, and the second structure can transmit rotation even if it has a slight angle Therefore, it is easy to obtain a large torque force by selecting the diameter of the rotating part of the pulley, and the third structure differs from the former two in that the pulley does not use a pulley and the force is brought into contact with the rotary driving body with the same inclination angle of the rotating body And a force from a direction substantially perpendicular to the rotation axis of the disk is applied only to a part of the outer periphery of the inclined disk, but the rotating body is rotated only by uniaxial driving Has features.

JP-A-4-115820 Japanese Utility Model Publication No. 5-26921

  However, in the structure of the rotary driving body having the same inclination that is pressed against the inclined surface, which is the same basic structure as the present invention, as described in the background art, the above-described third requirement is satisfied in response to a demand for high-speed conveyance. According to the order of the structure <the second structure <the first structure, the accuracy of the rotation force propagation increases. That is, it is possible to secure a sufficient frictional force with respect to the strength including the shape of the structure according to the order. In other words, in the third structure, that is, in the basic structure of the present invention, it is an important issue to secure the frictional force. As the speed increases, the problem becomes more apparent.

  At present, the paper is conveyed at a speed of about 100 m / min. However, if it is desired to further increase the speed, only a part of the area near the outer periphery of the inclined rotating disk has a predetermined angle with respect to the axis. A constant pressing force is applied in the direction of the displacement, and in such a situation, bending stress is generated by the moment in the disk fixing portion, and sufficient reinforcement of the stress concentration portion is required.

  For example, in the case of receiving the force of pressing the disk against the rotating disk as shown in FIG. 2C with respect to the rotating disk for transporting the luggage in the three existing structures as in the conventional structure shown in FIG. Compared to the method shown in FIG. 2B, a load is applied to a part of the periphery of the disk having the inclined surface, so that a local force is generated around the fixed portion.

  In order to minimize the force or stress concentration as much as possible, it is necessary to reduce the pressing force in the axial direction. However, especially in high-speed rotation, slippage occurs, and it is difficult to propagate smooth rotation.

  On the other hand, in the structures (a) and (b) shown in FIG. 2, when changing the direction of the article to be conveyed, the entire unit including a plurality of rotating bodies must be moved up and down, and the conveyance direction is frequently changed. In such cases, it is necessary to move a heavy object up and down, so that maintenance for reducing and preventing wear and system failure has been troublesome.

  SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention provides a sorting device having a structure for obtaining stable rotation in a device for sorting articles by a rotating body when articles are conveyed at high speed, and in particular, generation of slip even at high speed rotation. It is an object of the present invention to provide a sorting apparatus which has a sufficient strength while reducing the number of components, ensuring smooth rotation, and reducing internal stress in components.

  In order to solve such a problem, the present invention provides a frictional force in a region where the rotary driving body and the annular rotating body are pressed against each other, in addition to a dynamic friction coefficient peculiar to the material, a fine elastic deformation generated at the time of pressing. Expecting a frictional force (resistive force) due to shape deformation, it is structured to obtain a reliable rotational force by an elastic body. That is, in the conveyor switching device by the rotating body, a long life and stable operation in high-speed transport is desired, but when driving a plurality of rotating bodies simultaneously, excessive force is applied, and a large force is required. According to the present application, it is difficult to obtain a stable rotation operation, but according to the present application, a structure is provided that always provides a stable force due to the moment of inertia, and an unreasonable force is not applied, and a stable rotation operation is obtained. It is.

  As a more specific configuration, one embodiment of the present invention is a shaft substantially orthogonal to a transport direction in which a transport target is placed and transported on a transport path surface by a rotation driving mechanism, and a shaft fixed to the shaft. A fixed portion having an inclined disk having a predetermined angle, and an outer peripheral surface which is rotatably disposed around the inclined disk of the fixed portion at the same angle and which is in sliding contact with the bottom of the conveyed object, and freely rotates around the shaft. An annular rotator pivotally provided, a driving rotator abutting the annular rotator at a predetermined angle on a side surface near an outer periphery thereof, and a sorting direction by arbitrarily rotating a shaft integrated with the fixed portion. Means, which can be selected arbitrarily, and the driving rotating body and the fixed portion are held in a pressed state by a pressed state maintaining means, so that the annular rotating body pivotally provided so as to be freely rotatable with respect to the fixed portion. And the drive Always rotating body on a concentric of said shaft and a structure for maintaining a smooth rotation state at a constant pressure state.

  Further, according to the present invention, as shown in FIGS. 5 and 6, the rotating part of the annular rotating body has a substantially uniform structure around the entire circumference, and has a greater axial thickness than a sliding contact mechanism such as a bearing. With such a structure, it is possible to obtain a stable large moment of inertia, and it is possible to continue smooth rotation even at high speed rotation while maintaining a stable position.

  In particular, in the case of high-speed rotation, the above-mentioned moment of inertia is larger than in the case of the initial rotation drive. Therefore, it is possible to obtain sufficiently stable rotation even if the axial pressing force for obtaining the rotation drive force is reduced. It becomes.

  In the article sorting apparatus according to the present invention, even during high-speed rotation of the rotating unit in high-speed transport, reliable rotation propagation is possible through the elastic body that can be expected to undergo compressive deformation, and sliding is achieved by securing an inertia moment. Even when the pressing force of the contact portion is small, stable and smooth rotation can be obtained, so that unnecessary force is not applied to the structure.

  Further, in the present structure, as shown in FIG. 3, when the direction of the article to be conveyed is changed, by rotating the shaft by a predetermined angle, the annular rotating body attached around the fixed portion shown in FIG. As shown in FIG. 7, with the inclination along the disk, the maximum height from the shaft in the upward direction changes, and for example, when projecting from the height position of the transport path such as a conveyor belt, At the same time, the transport direction can be changed, and further, although not shown in the figure, it is possible to hide the transport path at a position lower than the height position.

  That is, in the case of the structure shown in FIGS. 2A and 2B, when changing the transport direction on the rotating disk, the direction is changed for each unit in which a plurality of disks are integrated. In this case, by rotating the shaft at a predetermined angle as shown in FIG. 3, the height control as shown in FIG. 7 is also possible.

  Further, in the present structure, as shown in FIG. 8, one or a plurality of rotating disks are assembled into a shaft, and the shaft unit is configured as a single or plural stages of rotating units. Since the structure is removable, simplification in maintenance becomes easy.

  With these structures, it is possible to carry out short-time processing by high-speed conveyance when processing a large number of articles on the sorting conveyor, and reduce the impact on the articles by appropriately changing the rotation position of the shaft unit according to the progress of the conveyed articles. It is also possible to reduce the margin between articles, so that efficiency and safety can be achieved with respect to the overall processing time, and further, a structure that can easily perform regular necessary maintenance operations can be obtained.

It is a top view of an important section of a conveyance device explaining arrangement and operation of a sorting device. FIGS. 2A and 2B show various forms of rotary drive in a conventional structure plan, in which the rotary drive and the disk are in contact at the outer periphery, and FIG. 2B is a form in which the rotary drive and the disk rotate via a pulley. FIG. 2C shows a form in which the rotary driving body and the disk abut on a disk plane. FIG. 3A is a conceptual diagram illustrating a pressing contact point between the rotary driving body and the annular rotary body according to the first embodiment of the present invention, and FIG. 3 (b) shows a state rotated 90 degrees from the state shown in FIG. 3 (a) to one side, and FIG. 3 (c) shows a state rotated 90 degrees further from FIG. 3 (b) in the same direction. 3A shows a state rotated by 180 degrees from FIG. 3A, and FIG. 3D shows a state rotated further by 90 degrees in the same direction from FIG. ) Is rotated 270 degrees. FIG. 4A is a diagram illustrating a situation where the fixing unit according to the first embodiment of the present invention is rotated, and FIG. 4A is an overhead view of the state of FIG. 3, and FIG. 4A is a state of FIG. 4 (b) is a state of the fixing part when viewed from directly above, and FIG. 4 (c) is a state where the state of FIG. 3 (c) is true. FIG. 4D shows the state of the fixing portion as viewed from above, and FIG. 4D shows the state of the fixing portion as viewed from directly above the state of FIG. 3D. It is a conceptual diagram in the state where the annular rotating body was attached to the perimeter of the fixed part concerning a 1st embodiment of the present invention. It is a lineblock diagram showing a pressing force relation in a rotating body of a sorting part concerning a 1st embodiment of the present invention. It is a figure showing the rotation state of the sorting part concerning a 1st embodiment of the present invention. FIG. 2 is a configuration diagram illustrating a positional relationship between a conveyor belt and a rotating body of the sorting device according to the first embodiment of the present invention. FIG. 2 is a schematic diagram of a shaft unit and a rotation unit in which the rotation body according to the first embodiment of the present invention is assembled.

  Hereinafter, a sorting device according to an embodiment of the present invention will be described with reference to the drawings. In the following, the range necessary for the description for achieving the object of the present invention is schematically shown, and the range necessary for the description of the relevant part of the present invention will be mainly described. It shall be based on a known technique.

  FIG. 1 shows a sorting direction to a straight traveling direction (A) and left and right, that is, B or C, when a conveyed article 200 passes through a rotator unit 110 in a conveying apparatus 100 to which a sorting apparatus according to the present invention is applied. FIG. 4 is a schematic plan view of a main part showing “1”.

  FIGS. 2A and 2B are schematic diagrams showing various forms of rotational drive in the conventional structure plan. FIG. 2A shows a structure in which a side surface of a cylindrical drive rotating body 41 and an outer peripheral flat portion of the rotating disk 1 are in contact with each other. b) shows an example of a structure via a pulley 5. Further, in the structure (c) of pressing the inclined surface 1 as in the present invention, the driving rotating body 4 rotated by a structure (not shown) (not shown) rotates the rotating disk 1. Although the state where the rotating body is rotated while being pressed is shown, the former two structures move the entire rotating body unit 110 in which the rotating body is incorporated up and down to change the sorting direction and move the rotating body unit 110 in a desired direction. However, in the structure (c), the direction of the rotating disk 1 can be changed by rotating the shaft 2 to a desired angle.

Figure 3 shows a pressing contact portion between the rotary drive member and the annular rotary body according to an embodiment of the present invention, a rotary drive member 4 and the annular rotary body 11 and is E ₁₁ and E ₁₂ in the position shown in (a) If in being pressed, in the figure of the annular rotary body 11 shows that exerted the force of P ₁ in a portion to be a shadow. Further, in the state of (a) above were rotated 90 degrees from the state to the one (b), a state where the force of the P ₂ at a position illustrated consuming and is further rotated 90 degrees in the same direction or the (a) state, in the state of the rotated 180 degrees to one (c), force P ₃ at the position shown is consuming, it is further rotated 270 degrees while rotating 90 degrees in the same direction, or from the (a) state to one in the state (d), shows that the force P ₄ in the position shown it takes.

  FIG. 4 is a view showing a fixing portion according to an embodiment of the present invention, and shows only the fixing portion 3 when the state of FIG. 3 is viewed from directly above, and shows the fixing portion 3 integrally attached to the shaft 2. The state of the inclined disk 32 which is inclined by the rotation of the shaft 2 is shown, and the object to be conveyed is conveyed by the rotation of the annular rotating body 11 not shown. In the state of (a), the object to be conveyed is moved to the right (in the direction B in FIG. 1) as shown by the arrow, and in the state of (b) in which the fixed portion is rotated by 90 degrees, the circular rotation is performed as shown in FIG. When the maximum external part of the body is lower than the height position of the conveyor or at the same surface position, the body proceeds in the straight traveling direction (A direction in FIG. 1), and the fixing part is further rotated by 90 degrees (c). In the state shown in FIG. 1D, which is shifted to the left (in the direction C in FIG. 1) and the fixed part is further rotated by 90 degrees, the maximum outer shape of the annular rotating body is the height of the conveyor, as in the state shown in FIG. If it is lower than the vertical position, or if it is at the same surface position, it indicates that the vehicle is going straight ahead (direction A in FIG. 1). The arrow shown in FIG. 4 is for contacting the object to be conveyed on the outer peripheral surface of the annular rotating body 11 attached to the outer peripheral portion thereof, and is not for contacting the object to be conveyed on the surface shown in FIG. It shows the transport direction in the state.

  When rotating the fixed part 3 to change the direction of the object to be conveyed, the shaft 4 integrated with the fixed part 3 is rotated to a desired angle by a pulley or a rack and pinion system, or a motor built-in type is used. Apply a rotation control method.

  FIG. 5 is a view showing the concept of a state in which the annular rotating body 11 is attached to the outer periphery of the fixed portion 3 according to one embodiment of the present invention, and shows the attached state of the annular rotating body 11 by a broken line around the fixed portion 3. .

FIG. 6 is a diagram showing an example of a means for maintaining the pressed state of the rotating body of the sorting unit according to one embodiment of the present invention. Here, the position in the state of FIG. A fixed opposing pressing force E ₁₁ , E ₁₂ is applied between the fixed portion 4 and the fixed portion 3, and the fixed portion 3 and the annular rotating body 11 can freely rotate in an integrated structure via a bearing 81 or the like via a bearing 81 or the like. It has become. Although the number of arrows E ₁₁ and E ₁₂ in FIG different, which was schematically by abutting structure, as the force is the same value that the relationship of action and reaction. (The same applies to FIG. 7)

That is, by receiving the pressing forces E ₁₁ and E ₁₂ , the forces of the pressing forces E ₂₁ and E ₂₂ are applied to the inclined portion where the driving rotating body 4 and the annular rotating body 11 are in contact with each other, and the rotation of the rotating driving body 4 is reduced. A structure that propagates as rotational force due to the pressing force and friction coefficient of the annular rotating body 11, wherein the friction coefficient is a frictional force due to the frictional coefficient of the elastic body itself, and a resistance force due to deformation caused by the pressing force is applied. Becomes

FIG. 7 is a schematic diagram showing the relationship between the pressing force and the moment of inertia of the rotating body of the sorting unit according to one embodiment of the present invention, and shows the outer diameter (r ₁ ) inner diameter (r ₂ ) and thickness of the annular rotating body 11. Assuming that the mass determined by (t) is M, the moment of inertia J of the annular rotating body is
^{_{J = M × (r 1 2}} + r 2 2) / 2 ( unit: g · ^cm 2)
Becomes Here, a great effect can be obtained by forming the annular rotating body 11 from a material having a sufficient thickness and a substantially uniform mass (density) with respect to the inner and outer diameters determined by external factors. Further, since the transport speed in the present apparatus is always constant, more stable rotation can always be obtained by using the force due to the moment of inertia.

In particular, to ensure the inertia moment here is the force E ₁₁ press the annular rotor 11 which is integrated into the fixed portion inclined, the force E ₁₂ to press the rotary drive member is, the rotational speed of the rotary body increases In particular, during high-speed rotation, it is possible to reduce the constant pressing force without applying excessive force, and when the load to be sorted reaches or contacts the sorting section. Thus, it is easy to maintain stable rotation with respect to the impact force generated at the time.

FIG. 8 is a diagram showing a positional relationship between the conveyor unit 6 and the sorting device, particularly the rotating body 1, according to an embodiment of the present invention. The rotary driving body 4 fixed to the shaft 2 as the central axis, and the rotating body 1 in which the fixed portion 3 having the inclined portion, the bearing 81, and the annular rotating body 11 are integrated are pressed against each other in the axial direction. As indicated by 4, the broken arrow indicates that the height position of the maximum outer peripheral portion of the annular rotating body 11 is changed by changing the inclination direction of the fixed portion 3. Its height is indicated as (L ₁ region as the width) of the region D ₂ which projects from the height position of the conveyor unit 6 for conveying the effective area. Incidentally, the effective area is based on the thickness D ₁ of the conveyor 6, the gap L between the conveyors, the maximum value D _{3 at} which the annular rotating body 11 is buried from the surface position of the conveyor 6, and the outer diameter of the driving rotating body 4. It is determined by such margin gap D ₄ between the bottom surface of the conveyor unit 6.

  As shown in FIGS. 3 and 4, the amount of protrusion from the surface of the conveyor 6 can be gradually changed by rotating the fixed shaft 3. By appropriately changing the rotational position of the shaft unit, it is also possible to reduce the impact on the article, and by controlling the rotational angular velocity, it is possible to more effectively reduce the impact.

  FIG. 9 is a diagram schematically illustrating a shaft unit 111 and a rotator unit 110 in which a rotator according to the first embodiment of the present invention is assembled. For example, four rotators are provided on one shaft. A shaft unit 111 that is easily assembled and detached, and a state in which the shaft units are stacked in three stages are drawn, and the fixed unit 3 is rotated at an arbitrary rotation angle as shown in FIGS. Simultaneously with the A, B, and C direction control, the amount of protrusion of the rotating body from the height of the conveyor surface in the height direction shown in FIG. 7 can be changed.

  Incidentally, the rotating body 1 attached to the shaft unit 111 may be singular or plural, and the rotating body unit 110 is effective even if one or a plurality of rotating units are arranged in stages.

  In the transfer device according to the present invention, while the high-speed transfer process is proceeding in parallel with the diversification of the distribution form, the transfer speed is increased, and the sorting / branching reliability in the sorting device is required. In the various industries where the transport device is applied, the transmission of the rotation drive that occurs when the rotating body rotates at a high speed is reliably performed, and the high-speed and reliable sorting can be performed for various packages. Has great availability.

DESCRIPTION OF SYMBOLS 1 Rotating body 11 Annular rotating body 2 Shaft 21 Shaft of rotating roller 22 Shaft of pulley 3 Fixed part 31 Fixed axis fixed to shaft 32 Inclined disk having a predetermined inclination 4 Rotary driving body 41 Rotation driven by the outer periphery of rotating body Driving body 42 Rotary driving body driven by using a pulley 5 Driving pulley 6 Conveyor unit 7 Elastic body (such as synthetic resin)
71 Elastic body fixed to the annular rotating body 72 Elastic body fixed to the rotating driver 8 Sliding mechanism 81 Bearing structure enabling sliding contact between the fixed portion and the annular rotating body 82 Sliding contact between the shaft and the rotating driver Possible bearing structure 100 Sorting unit of conveyor 110 Rotary unit 111 Shaft unit 200 Articles A, B, C to be conveyed Transport direction D Dimension indicating positional relationship between conveyor and rotating body D ₁ Thickness of conveyor unit D ₂ the maximum amount D ₃ maximum amount D ₄ external force E for generating a margin gap E rotational force of the rotary drive member and the conveyor bottom 1 the annular rotary body is buried from the conveyor surface the annular rotary body protrudes from the conveyor _surface, E ₂ force for pressing the outer peripheral portion of the disk of the conventional structure E _3, E ₄ conventional force E 5 pulling the rotating body _structure, E ₆ force E ₁₁ fixed to press the surface of the disk of the conventional structure Rotation force of the pressing forces E ₁₂ rotary drive member rotary drive member by the force of the force E ₂₁ the E12 for pressing receives a force by the driving rotation of the reaction force E ₂₂ wherein E11 is subjected reaction force E ₂₃ rotating drive body is A force indicating a vector pointing toward the front of the figure when applied. E ₃₃ A vertical component due to the force applied by the rotary drive E ₃₄ A component in the rotary direction due to the rotation of the rotary drive L L Gap length between conveyors L ₁ A region where the largest outer portion of the rotating body projects from the conveyor surface R Rotating force R ₁ Rotating force of the annular rotating body driven by the ₁ rotating drive R ₂ Rotating force of the rotary rotating body r Diameter of the annular rotating body section r ₁ Outer diameter of the annular rotating body 11 r ₂ Inner diameter of the annular rotating body 11 t Thickness of the annular rotating body 11 θ Angle of inclination of the fixed portion inclined plate and the annular rotating body with respect to the shaft.

Claims (1)

A shaft substantially orthogonal to the transport direction in which the transport target is placed and transported on the transport path surface by the rotary drive mechanism,
A fixing portion having an inclined disk having a predetermined angle with the axis fixed to the shaft,
An annular rotating body which is rotatably arranged around the inclined disk of the fixed portion at the same angle and has an outer peripheral surface slidably in contact with the bottom of the conveyed object and is rotatably pivoted around the shaft;
A driving rotating body that contacts the annular rotating body at a predetermined angle with a side surface near the outer periphery,
Means for optionally selecting the sorting direction by arbitrary rotation of the shaft integrated with the fixed part,
The driving rotator and the fixed portion are maintained in a pressed state by a pressed state maintaining means, so that the annular rotator and the driving rotator pivotally rotatably mounted on the fixed portion are concentric with the shaft. A structure for maintaining a smooth rotation state in a constant press-contact state above.

Images