JP6771864B2 - Sorting device - Google Patents

Description

The present invention relates to a switching device for a sorting conveyor, and more particularly to a sorting device having a structure for obtaining stable rotation in a device for sorting articles by a rotating body when transporting articles at high speed.

In the field of logistics, there are cases where goods with various shapes (outer shapes and sizes) of objects to be transported are mixed and sorted, and there is a strong demand for higher speed transportation in order to improve their work efficiency, for example, several years. The conveyor speed, which used to be about 40 m / min to 60 m / min, has increased to about 90 m / min to 100 m / min in recent years, and it is expected that the speed will 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 rotating drive body corresponding to an inclination propagates a rotational force to the rotating disk. It is disclosed.

Specifically, as a structure in which the rotating disk rotates, a method of rotationally driving an annular rotating body having the same inclination angle as the rotating driving body in a state of pressure contact has been raised as one method.

Jikkenhei 4-115820 Gazette Jikkenhei 5-26921

However, in the conventional structure, only the conceptual basic structure is touched, and the outer shape of the annular rotating body has a rectangular cross section, and only a simple disk having an integral structure is drawn, and a concrete description such as an inclination angle is given. Therefore, it is not possible to find a condition regarding an efficient method of rotational force propagation by pressure welding drive.

That is, when the rotary drive body having an inclination angle is in pressure contact with the annular rotating body and propagates the rotational force, it is efficient and sufficient from the relationship between the strength of the constituent member, the friction coefficient of the material, and the magnitude of the inclination angle. No concrete method for rotational force propagation can be found.

Furthermore, we have not found an effective method for reliably transporting the outer shape of the annular rotating body so that it protrudes significantly from the surface of the conveyor such as a belt conveyor.

In the present invention, the optimum inclination angle between the rotating drive body and the annular rotating body, the conditions for improving the frictional force, and the friction between the object to be conveyed and the annular rotating body are obtained with respect to the above-mentioned unsolved portion. The challenge was to materialize the structural conditions for reliable transportation using force.

In order to solve such a problem, the present invention presents the relationship between the positional dimensions of the components for improving the rotational force transmission effect, the material of the sliding portion of the rotating drive body and the annular rotating body, and the target conveyed object. The shape and material of the annular rotating body to enhance the transport effect, and the structure and configuration for ensuring the dimensional allowance in the height direction from the conveyor surface of the annular rotating body have been materialized.

In the present invention, the inclination angle at which the rotary drive body and the annular rotating body are in sliding contact is set in a region centered on 35 degrees, so that the void space of the conveyor means can be effectively used to allow a height margin from the conveyor surface. By applying engineering plastics that have both structural strength and friction coefficient to the sliding contact area, it is possible to secure sufficient frictional force.

Furthermore, by shifting the position of the rotation center axis from the center of the thickness of the annular body of revolution via a bearing that allows free rotation when the inclined disk of the fixing part that is held and fixed around the shaft rotates. It is possible to further increase the height margin at which the outer peripheral portion of the annular rotating body protrudes from the surface of the conveyor, which makes it possible to efficiently convey the sorting device by the rotating driving body having an inclination and the annular rotating body. There is.

It is a top view of the main part of the transport device explaining the arrangement and operation of a sorting device. It is a block diagram which shows the positional relationship of the conveyor belt which concerns on 1st Embodiment of this invention, and the rotating body of a sorting apparatus. It is a conceptual diagram which shows the pressing contact part of the rotary drive body and the annular rotary body which concerns on 1st Embodiment of this invention, and shows the state which the rotary drive body and an annular rotary body are in contact with a rotation axis on the point front side. It is a figure. It is a conceptual diagram which shows the pressing contact part of the rotary drive body and the annular rotating body which concerns on 1st Embodiment of this invention, and is the figure which shows the state which was rotated 90 degrees to one side from the state of FIG. 3A. It is a conceptual diagram which shows the pressing contact part of the rotary drive body and the annular rotary body which concerns on 1st Embodiment of this invention, from the state which was further rotated 90 degrees in the same direction from the state of FIG. 3B, or from the state of FIG. It is a figure which shows the state rotated by 180 degrees. It is a conceptual diagram which shows the pressing contact part of the rotary drive body and the annular rotating body which concerns on 1st Embodiment of this invention, and is further rotated 90 degrees in the same direction from the state of FIG. 3C, or from the state of FIG. 3A. It is a figure which shows the state which was rotated 270 degrees. It is a figure of the situation which the fixed part which concerns on 1st Embodiment of this invention is rotating, and is the figure which looked down on the state of FIG. 3A from directly above. It is a figure of the situation which the fixed part which concerns on 1st Embodiment of this invention is rotating, and is the figure which looked down on the state of FIG. 3B from directly above. It is a figure of the situation which the fixed part which concerns on 1st Embodiment of this invention is rotating, and is the figure which looked down on the state of FIG. 3C from directly above. It is a figure of the situation which the fixed part which concerns on 1st Embodiment of this invention is rotating, and is the figure which looked down on the state of FIG. 3D from directly above. It is a conceptual diagram of the state which attached the annular rotating body to the outer periphery of the fixing part which concerns on 1st Embodiment of this invention. It is a block diagram which shows the pressing force relation in the rotating body of the sorting part which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the shape of the annular rotating body which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the shape of the annular rotating body which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the shape of the annular rotating body which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the shape of the annular rotating body which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the rotation central axis of the annular rotating body which concerns on 1st Embodiment of this invention, and is the sectional view which shows the position of the fixed part and the annular rotating body. It is sectional drawing which shows the rotation center axis of the annular rotating body which concerns on 1st Embodiment of this invention, and is a conceptual diagram which shows the maximum outer diameter value at the time of rotating a rotating body. It is another cross-sectional view which shows the rotation center axis of the annular rotating body which concerns on 1st Embodiment of this invention, and is the sectional view which shows the position of the fixed part and the annular rotating body. It is another cross-sectional view which shows the rotation central axis of the annular rotating body which concerns on 1st Embodiment of this invention, and is a conceptual diagram which shows the maximum outer diameter value at the time of rotating a rotating body. It is a schematic diagram of the shaft unit and the rotating body unit which assembled the rotating body which concerns on 1st Embodiment of this invention.

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 explanation for achieving the object of the present invention will be schematically shown, and the range necessary for the explanation of the relevant part of the present invention will be mainly described. It shall be based on known technology.

FIG. 1 is a schematic plan view of a main part showing a straight-ahead direction (A) and a sorting direction to the left and right, that is, to B or C in a transport device to which the sorting device according to the present invention is applied.

FIG. 2 is a diagram showing the positional relationship between the conveyor unit 6 and the rotating body 1 in the sorting device according to the embodiment of the present invention. A rotary drive body 4 in which the shaft 2 is fixed to the central shaft, a fixed portion 3 having an inclined portion, a bearing 81, and a rotating body 1 in which an annular rotating body 11 is integrated are pressed against each other in the axial direction. As shown in No. 4, the broken line arrow indicates that the height position of the maximum outer peripheral portion of the annular rotating body 11 changes by changing the inclination direction of the fixed portion 3. As for the height, the region D ₂ protruding from the height position of the conveyor portion 6 for transportation is shown as an effective region (the region of L ₁ as the width). Incidentally, the effective region is for the thickness D ₁ of the conveyor portion 6, the gap L between the conveyors, the maximum value D ₃ in which the annular rotating body 11 is buried from the surface position of the conveyor portion 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.

Since the amount of protrusion from the surface of the conveyor 6 can be gradually changed by the rotation of the fixed shaft 3 (details are shown in FIGS. 3A to 3D and 4A to 4D), the progress state of the conveyed article in the sorting conveyor. It is also possible to reduce the impact on the article by appropriately changing the rotation position of the shaft unit according to the above, and by controlling the rotational angular velocity, more effective impact reduction becomes possible.

3A to 3D show the pressing contact points between the rotating drive body and the annular rotating body according to the embodiment of the present invention, and the rotating drive body and the annular rotating body are pressed by E ₁₁ and E ₁₂ at the positions shown in FIG. 3A. If it has, 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 FIG. 3B is rotated 90 degrees to one from the state in FIG. 3A, the power of P ₂ is consuming in the position shown, while the further state rotated 90 degrees in the same direction or state of FIG. 3A, to the state of FIG. 3C rotated 180 degrees, the force P ₃ at the position shown is consuming, further state rotated 90 degrees in the same direction, or FIG. 3D is rotated 270 degrees to one from the state of FIG. 3A in the state indicates that the force P ₄ in the position shown it takes.

4A to 4D show the fixing portion according to the embodiment of the present invention, and are views showing only the fixing portion in which the states of FIGS. 3A to 3D are viewed from directly above, and are integrally attached to the shaft 2. The state of the inclined disk 32 in which the fixing portion 3 is inclined by the rotation of the shaft 2 is shown, and the object to be conveyed is conveyed by the rotation of an annular rotating body (not shown). In the state of FIG. 4A, the object to be transported is moved to the right side (direction B in FIG. 1) as shown by the arrow, and in the state of FIG. 4B in which the fixed portion is rotated 90 degrees, the annular rotating body is shown later in FIG. If the maximum outer shape is lower than the height position of the conveyor or is at the same surface position, it goes straight (direction A in FIG. 1), and in the state of FIG. 4C in which the fixed portion is rotated 90 degrees, the left side (the left side (direction A in FIG. 1)). In the state of FIG. 4D in which the fixed portion is further rotated by 90 degrees in the C direction of FIG. 1, the maximum outer shape of the annular rotating body is lower than the height position of the conveyor, as in the state of FIG. 4B. Or, if they are at the same surface position, it indicates that the vehicle advances in the straight direction (direction A in FIG. 1). The arrows shown in FIGS. 4A to 4D are those in contact with the object to be conveyed on the outer peripheral surface of the annular rotating body 11 attached to the outer peripheral portion thereof, and are not in contact with the object to be conveyed on the surface shown in the drawing, but the fixed portion 3 Indicates the transport direction in this state.

In the rotation of the fixed portion 3, the shaft 4 integrated with the fixed portion 3 is rotated to a desired angle by a pulley or rack and pinion method, or a rotation control method with a built-in motor is applied.

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

FIG. 6 is a diagram showing an example of means for maintaining the pressure contact state of the rotating body 1 of the sorting portion according to the embodiment of the present invention, showing the position in the state of FIG. 4A, and shows the position of the rotating drive body 4 and the fixed portion 3. A constant pressing force E11 and E12 are applied between the two, and the fixed portion 3 and the annular rotating body 11 have only the annular rotating body 11 located on the outer peripheral portion in the integrated structure via the sliding contact mechanism by the bearing 81 or the like. free rotation has become possible. Although the numbers of arrows of E11 and E12 in the figure are different, they are modeled according to the abutting structure, and the force has the same value having an action / reaction relationship.

That is, the rotary drive body 4 and the annular rotary body 11 receive the pressing pressures E ₁₁ and E ₁₂ at the inclined portion, and the rotation of the rotary drive body 4 is configured as a pressing force on the annular rotary body 11 and both pressure contact portions. The structure propagates as a rotational force by the friction coefficient of the elastic bodies 71 and 72, and the friction coefficient increases the frictional force due to the friction coefficient of the elastic body itself and the resistance force obtained by the shape deformed by the pressing force. is there.

7A to 7D are views showing an example of the shape and structure of the annular rotating body 11 according to the embodiment of the present invention. For example, a structure made of metal or engineering plastic, and a bearing or the like not shown in the inner diameter thereof is rotated. It rotates freely through a sliding contact structure, and the material can be synthetic rubber, wood, ceramics, or the like, and is not limited to the above example.

The region where the annular rotating body 11 is in pressure contact with the rotating driving body 4 and the maximum outer diameter region of the annular rotating body are made of engineering plastic such as a polyacetal resin or a polyurethane resin, and the outer shape thereof is a flat surface or a curved surface. It is possible to perform a large chamfering treatment on the region in contact with the sliding surface and the object to be transported, regardless of the material of metal or resin.

Here, the thickness (t ₂ ) of the fixed structure portion of the sliding contact mechanism protruding from the inner diameter portion (d ₂ ) to the inner diameter side should be as small as possible with respect to the outer diameter (d ₁ ) of the annular rotating body 11. Therefore, it is possible to obtain a large moment of inertia while the annular rotating body 11 is rotating, and it is possible to obtain smooth rotation.

Further, the surface 12 in sliding contact with the rotary drive body has an elastic body 71 in a region in contact with the rotary drive body, and the surface in contact with the article to be transported has a step (t ₃ ) as shown in FIGS. 7A and 7B. It is preferable to secure it.

For example, in an example in which the region corresponding to the sliding surface 12 of the annular rotating body 11 and the outermost outer peripheral surface 13 in contact with the object to be transported is made of an elastic body made of engineering plastic and a rigid material such as metal, the cross section is approximately rectangular. 7A is shown in FIG. 7A, FIG. 7B is a large chamfered portion that does not come into contact with the object to be transported, and FIG. 7C is an R chamfered portion as a whole. Further, the entire annular rotating body 11 is made of an elastic body made of the engineering plastic or the like. FIG. 7D is shown.

FIG. 8A is a diagram showing a rotation center axis of the annular rotating body 11 according to the first embodiment of the present invention, and as shown in FIGS. 3A to 3D and FIGS. 4A to 4D, positions in contact with the rotating driving body 4 are located. A case is shown in which the rotation center position O ₁ of the fixing portion 3 for replacement is located at a substantially central portion (t ₄ ) of the thickness (t ₁ ) of the annular rotating body 11, and the annular rotating body 11 is schematically used. When the diagonal straight line of R ₁ shown in FIG. 8B reaches the vertical position direction, the maximum protrusion amount in this device is obtained.

On the other hand, FIG. 9A shows a case where the rotation center position O ₂ is located at a position (t ₅ ) deviated from the central surface of the thickness (t ₁ ) of the annular rotating body 11 to one side. diagonal straight R ₂ shown in FIG. 9B schematically showing is when it reaches the vertical position direction, will get the maximum protruding amount in the apparatus, said the R _1, the R 1 _{<R 2} relationship become.

That is, the protruding amount from the example, a belt surface of the conveyor, if you need to as large as possible, it is effective to be biased tilt rotation center position O ₂ of the.

FIG. 10 is a diagram schematically depicting a shaft unit 111 and a rotating body unit 110 in which a rotating body according to the first embodiment of the present invention is assembled. As an example, four rotating bodies are mounted on one shaft. It depicts a shaft unit that can be incorporated and easily removed, and a state in which the shaft unit is stacked in three stages.

Incidentally, although a plurality of rotating bodies 1 attached to the shaft unit 111 are basic, a single number is also possible, and it is basic that a plurality of shaft units 111 are multi-staged in the rotating body unit 110, but the shaft unit 111 Is valid even for one.

According to the present invention, at the same time as the distribution form is diversified, a shaft unit in which a plurality of rotating bodies are arranged on one shaft can be easily attached and detached in a situation where it is used in all areas of distribution. At the same time, by selecting the shape / material of the sliding contact portion and the central axis of rotation, it is possible to obtain an efficient transfer device, which has great potential in various industries to which it is applied.

1 Rotating body 11 Circular rotating body 12 Surface in contact with the rotating drive body 13 Surface in contact with the article to be transported 2 Shaft 3 Fixed part 31 Fixed shaft fixed to the shaft 32 Tilt disk with a predetermined inclination 4 Rotating drive body 6 Conveyor Part 7 Elastic body (synthetic resin)
71 Elastic body fixed to the annular rotating body and in sliding contact with the rotating drive body 72 Elastic body fixed to the rotating drive body and in contact with the annular rotating body 8 Sliding contact mechanism 81 Allows sliding contact between the fixed portion and the annular rotating body Bearing structure 82 Bearing structure that enables sliding contact between the shaft and the rotating drive body 100 Sorting part of the transport device 110 Rotating body unit 111 Shaft unit 200 Articles to be transported A, B, C Transport direction D Positional relationship between the conveyor and the rotating body D ₁ Thickness of the conveyor part D ₂ Maximum amount of the annular rotating body protruding from the surface of the conveyor D ₃ Maximum amount of the annular rotating body buried from the surface of the conveyor D ₄ Margin gap between the rotating drive body and the bottom surface of the conveyor E Rotation External force to generate force E ₁₁ Force to press the fixed part E ₁₂ Force to press the rotating drive body L Gap length between the conveyors L ₁ Area where the maximum outer shape of the rotating body protrudes from the surface of the conveyor O ₁ , O ₂ Center of rotation of the rotating body with respect to the shaft P ₁ , P ₂ , P ₃ Contact point between the rotating drive body in the pressure contact state and the annular rotating body R ₁ , R ₂ Length from the center of rotation of the rotating body to the maximum outer shape with respect to the shaft D ₁ Outer diameter of the annular rotating body d ₂ Inner diameter of the annular rotating body t ₁ Thickness of the annular rotating body t ₂ Thickness of the part of the annular rotating body that holds the sliding contact mechanism part t ₃ Outer diameter part of the annular rotating body Step between the maximum outer shape of the elastic material and the maximum outer shape t ₄ , t ₅ Position of the rotating body in the annular rotating body in the thickness direction θ Angle of the annular rotating body with respect to the shaft

Claims (10)

An object to be transported is placed on a transport path surface by a rotation drive mechanism and is fixed to a shaft substantially orthogonal to the transport direction, and a fixed portion having an inclined disk having an inclined angle is formed around the inclined disk. It is rotatably disposed at an angle having a conveyance object side outer peripheral surface of the elastic body in sliding contact with the bottom of the transport object, freely rotatably in an annular rotating body that will be pivoted about the shaft, the elastic The body constitutes a part of the outer circumference of the annular rotating body, and the outer peripheral surface of the elastic body on the transport target side is slightly larger than the surface of the annular rotating body other than the elastic body on the side in contact with the transport target. A protruding, annular rotating body ,
Also it has a rotary drive member having a contact with the second surface at any rotational position of the said free rotation of said at least one of the first surface of the pre-Symbol bullet resistant body annular rotating body, the fixing unit The sorting direction can be arbitrarily selected by arbitrarily rotating the shaft integrated with the above, and the outer peripheral surface of the elastic body on the rotation driving body side is the portion of the annular rotating body other than the elastic body on the rotation driving body side. protrudes slightly from the surface, over the previous SL rotational force of the rotary drive member by a frictional force generated between the second surface and the first surface by the friction coefficient with the elastic body said annular rotating body said by also propagated in the arbitrary rotational position of the free rotation of the annular rotary body Te, the rotary drive member and said annular rotary body, to maintain the circular smooth rotational state on a concentric of the shaft structure A sorting device characterized by having. The sorting device according to claim 1, wherein the outer peripheral portion of the annular rotating body in contact with the object to be transported is formed of the elastic body. The sorting device according to claim 1 and 2, wherein the elastic body in which the annular rotating body is in contact with the object to be conveyed is the maximum outer diameter portion of the annular rotating body. The sorting device according to claim 1, wherein at least one of the regions where the rotary drive body and the annular rotating body are in sliding contact with each other is covered with an elastic body. The sorting device according to claim 1, wherein a square chamfer or an R chamfer is provided except for a surface of the outer peripheral portion of the annular rotating body that is in sliding contact with the bottom of the transport target. The sorting device according to claim 1, wherein the angle formed by the surface orthogonal to the shaft and the surface orthogonal to the rotation axis of the annular rotating body is in the range of 20 degrees to 45 degrees. The sorting device according to claim 1, wherein the angle formed by the surface orthogonal to the shaft and the surface orthogonal to the rotation axis of the annular rotating body is an angle of 30 to 40 degrees. The sorting device according to claim 1, wherein the angle formed by the surface orthogonal to the shaft and the surface orthogonal to the rotation axis of the annular rotating body is approximately 35 degrees. A shaft unit in which one or more sets of a combination of the rotary drive body and the rotary body including the annular rotary body are installed on one shaft, and a rotary body unit in which the shaft units are combined in one or a plurality of stages. Specifications BunSo location according to claim 1 wherein characterized in that in the configuration. Specifications BunSo location of the rotating unit can be detached mounting only a single of the shaft unit from a ninth aspect.

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